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NEWS RELEASE


GIGALIGHT LAUNCHES SILICON OPTICAL TRANSCEIVERS WITH 16W POWER CONSUMPTION 800G
OSFP DR8/DR8+ & 2×FR4/2×LR4

Learn More


PRODUCT LAUNCH


GIGALIGHT INNOVATIVELY LAUNCHES LINEAR 400G DR4 CPO SILICON OPTICAL ENGINE

View More


NEWS RELEASE


GIGALIGHT REACHES BULK DEPLOYMENT OF 400G/800G SILICON OPTICAL MODULES
LEVERAGING CUSTOM COP TM PROCESS PLATFORM

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SLIDESLIDE




PRODUCTS & SOLUTIONS

GIGALIGHT focuses on developing decoupled optical network modules and subsystems
to reduce capital expenditure(CAPEX) and operating expenditure(OPEX) for data
centers and telecom operators. Since its establishment, the company has actively
cooperated with global operators to realize the interconnection of optical
networks, and has been widely recognized as a veritable advocate and leader of
open optical interconnection middleware.

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Press Releases, Upcoming Events, Industry Insights and Marketing Reports

29Mar, 2024

IS A COPPER TRANSCEIVER OR AN OPTICAL TRANSCEIVER, DAC, AOC BETTER?

The copper transceiver is a communication interface that through copper cables
(such as twisted pair network cables). It is also a type of optical transceiver.

With the rapid development of communication technology, various transceivers
have sprung up, among which copper transceivers, optical transceivers, DAC
(Direct Attach Cable) and AOC (Active Optical Cable) have become hot choices in
the industry. These transceivers have their own strengths and play important
roles in different scenarios. To better meet communication needs, we need to
deeply understand their characteristics and advantages in order to make wise
choices in practical applications. Next, this article will focus on the
comparison between copper transceivers, optical transceivers, DAC, and AOC,
aiming to help readers better understand and choose suitable communication
transceivers for themselves.




COPPER TRANSCEIVER VS DAC

Both the copper transceiver and the DAC are suitable for short-distance
transmission applications, and both are transmitted through copper cables.
However, the transmission distance of the copper transceiver is larger than that
of the DAC. The transmission distance of the DAC generally does not exceed 7m,
while the copper transceiver can transmit 30m.


COPPER TRANSCEIVER VS AOC

The copper transceiver uses copper cable for transmission, while the AOC uses
optical cable. Therefore, the copper transceiver has a longer transmission
distance, up to 300m. AOC has enhanced signal integrity and flexible deployment
methods, and has better air flow and heat dissipation in the computer room
cabling system, but its cost is higher than copper cabling at the 10G rate.


COPPER TRANSCEIVER VS OPTICAL TRANSCEIVER

Compared with optical transceivers, copper transceivers use copper cables for
wiring, while optical transceivers require optical fibers for wiring. If the
original wiring system uses copper cables, using copper transceivers can reuse
the previous copper cable wiring resources to complete the 10G network deploy.
In terms of transmission distance, the transmission distance of the copper
transceivers is relatively short, and the transmission distance of the optical
transceiver can be as high as 120km according to different combinations.


GIGALIGHT COPPER TRANSCEIVER

100M Copper SFP, including 100M single rate and 10/100M adaptive rate, adopts
RJ45 interface, and can transmit up to 100m with Cat5/5e network cable. There
are two options: commercial grade and industrial grade.

1G Copper SFP, including 1G and 10/100/1000m adaptive rate, also uses RJ45
interface, can transmit 100m with Cat5/5e network cable, and the temperature
range is commercial grade.

10G Copper SFP supports 10G rate transmission, uses RJ45 interface, and can
transmit up to 30m with Cat6/6A network cable, and the temperature range is
commercial grade.

From the latest perspective, copper transceivers are still widely used in
Ethernet, especially for connections within data centers and local area
networks. They are known for their reliability and cost-effectiveness, making
them a popular choice for many organizations. However, as the demand for higher
data rates and bandwidth continues to increase, some applications have turned to
optical transceivers because of their ability to support higher data rates and
longer transmission distances.

Overall, copper transceivers continue to play a vital role in network
infrastructure, providing a stable and efficient way to transmit data over
copper cables. Their versatility and compatibility with existing network setups
make them an essential component in modern communication systems.

0 6
25Mar, 2024

GIGALIGHT INNOVATIVELY LAUNCHES LINEAR 400G DR4 CPO SILICON OPTICAL ENGINE

Shenzhen, China, March. 25, 2024 – GIGALIGHT recently announced the launch of a
400G DR4 CPO silicon optical engine based on linear direct drive technology.
This is a subset of Gigabyte’s innovative products for the next optical network
era:

1.The linear silicon optical engine 400G DR4 CPO is composed of SOCKET slot
packaging and LPO linear direct drive technology. Compared with the
traditionally defined NPO/CPO, linear CPO silicon photonic engines remove DSP,
which can significantly reduce system-level power consumption and costs. The
light emitted from the TX end of this engine is in the range of 0-3dBm, and the
extinction ratio falls in the range of 4-5dB. TDECQ<2.5dB, generally falls
within 1-2dB. Wavelength is 1304.5nm-1317.5nm; SMSR≥30dB; RX end OMA sensitivity
<-5.5dBm. The eye diagram is as follows:

2.Through the test board with DSP and external pluggable light source specially
developed by GIGALIGHT, the linear 400G CPO optical engine can be completely
restored.

3.GIGALIGHT plans to upgrade the engine to 800G and 1.6T through higher-density
advanced packaging technology.

GIGALIGHT’s research on CPO originated from the Shenzhen Science and Technology
Innovation Commission’s co-packaging CPO optical project undertaken by the
company. Linear CPO is a relatively friendly technology form that can implement
higher-speed and higher-density switches under the premise of limited
low-nanometer manufacturing processes. Reduce power consumption and improve
system interconnection reliability. Truly realize the goal of de-DSP for
next-generation switches. Compared with the pluggable LPO technology that has
fundamental flaws that the industry is currently working on, linear CPO is a
stable technology. It should be said objectively that linear CPO is technically
inspired by LPO and original CPO technology, mainly to more easily solve many
problems such as system signal consistency and reliability. GIGALIGHT will delve
into silicon optical linear CPO technology solutions.


ABOUT GIGALIGHT

As an open optical networking explorer, Gigalight integrates the design,
manufacturing, and sales of both active and passive optical devices and
subsystems. The company’s product portfolio includes optical modules, silicon
photonics modules, liquid-cooled modules, passive optical components, active
optical cables, direct attach copper cables, coherent optical communication
modules, and OPEN DCI BOX subsystems. Gigalight focuses on serving applications
such as data centers, 5G transport networks, metropolitan WDM transmission,
ultra-HD broadcast and video, and more. It stands as an innovative designer of
high-speed optical interconnect hardware solutions.

0 7
25Mar, 2024

LOOKING AHEAD TO 2024 DATA CENTER INFRASTRUCTURE

Recently, DeLL’ORO GROUP released a forecast report, reviewing the outstanding
trends in the 23-year data center infrastructure report and looking forward to
the development of data center infrastructure in 2024. The following is the
report content.




OUTSTANDING TRENDS HIGHLIGHTED IN 2023 FORECASTS

 * Data center capex growth in 2023 has decelerated noticeably, as projected
   after a surge of spending growth in 2022. The top 4 US cloud service
   providers (SPs) in aggregate slowed their capex significantly in 2023, with
   Amazon and Meta undergoing a digestion cycle, while Microsoft and Google are
   on track to increase their greenfield spending on accelerated computing
   deployments and data centers. The China Cloud SP market remains depressed as
   cloud demand remains soft from macroeconomic and regulatory headwinds,
   although there are signs of a turnaround in second-half 2023 from AI-related
   investments. The enterprise server and storage system market performed worse
   than expected, as most of the OEMs are on track to experience a double-digit
   decline in revenue growth in 2023 from a combination of inventory correction,
   and lower end-demand given the economic uncertainties. However, network and
   physical infrastructure OEMs have fared better in 2023 because strong backlog
   shipments fulfilled in the first half of 2023 which lifted revenue growth.
 * We underestimated the impact of accelerated computing investments to enable
   AI applications in 2023. During that year, we saw a pronounced shift in
   spending from general-purpose computing to accelerated computing and
   complementary equipment for network and physical infrastructure. AI training
   models have become larger and more sophisticated, demanding the latest
   advances in accelerators such as GPUs and network connectivity. The high cost
   of AI-related infrastructure that was deployed helped to offset the sharp
   decline in the general-purpose computing market. However, supplies on
   accelerators have remained tight, given strong demand from new hyperscale.
 * General-purpose computing has taken a backseat to accelerated computing in
   2023, despite significant CPU refreshes from Intel and AMD with their
   fourth-generation processors. These new server platforms feature the latest
   in server interconnect technology, such as PCIe 5, DDR5, and more importantly
   CXL. CXL has the ability to aggregate memory usage across servers, improving
   overall utilization. However, general-purpose server demand has been soft,
   and the transition to the fourth-generation CPU platforms has been slower
   than expected (although AMD made significant progress in 3Q23). Furthermore,
   CXL adoption is limited to the hyperscale market, with limited use cases.
 * Server connectivity is advancing faster than what we had expected a year ago.
   In particular, accelerated computing is on a speed transition cycle at least
   a generation ahead of the mainstream market. Currently, accelerated servers
   with NVIDIA H100 GPUs feature network adapters at up 400 Gbps with 112 Gbps
   SerDes, and bandwidth will double in the next generation of GPUs a year from
   now. Furthermore, Smart NIC adoption continues to gain adoption, though,
   mostly limited to the hyperscale market. According to our Ethernet Adapter
   and Smart NIC report, Smart NIC revenues increased by more than 50% in 2023.
 * The edge computing market has been slow to materialize, and we reduced our
   forecast in the recent Telecom Server report, given that the ecosystem and
   more compelling use cases need to be developed, and that additional adopters
   beyond the early adopters have been limited.

According to our Data Center IT Capex report, we project data center capex to
return to double-digit growth in 2024 as market conditions normalize.
Accelerated computing will remain at the forefront of capex plans for the
hyperscalers and enterprise market to enable AI-related and other domain
specific workloads. Given the high cost of accelerated servers and their
specialized networking and infrastructure requirements, the end-users will need
to be more selective in their capex priorities. While deployments of
general-purpose servers are expected to rebound in 2024, we believe greater
emphasis will be made to increase server efficiency and utilization, while
curtailing cost increases.

Below, we highlight key trends that can enhance the optimization of the overall
server footprint and decrease the total cost of ownership for end-users:


ACCELERATED COMPUTING MAINTAINS MOMENTUM

We estimate that 11% of the server unit shipments are accelerated in 2023, and
are forecast to grow at a five-year compound annual growth rate approaching 30%.
Accelerated Servers contain accelerators such as GPUs, FPGAs, or custom ASICs,
and are more efficient than general-purpose servers when matched to
domain-specific workloads. GPUs will likely remain as the primary choice for
training large AI models, as well as running inference applications. While
NVIDIA currently has a dominant share in the GPU market, we anticipate that
other vendors such as AMD and Intel will gain some share over time as customers
seek greater vendor diversity. Greater choices in the supply chain could
translate to much-needed supply availability and cost reduction to enable
sustainable growth of accelerated computing.


ADVANCEMENTS IN NEXT-GENERATION SERVER PLATFORM

General-purpose servers have been increasing in compute density, as evolution in
the CPUs is enabling servers with more processor cores per CPU, memory, and
bandwidth. Ampere Computing Altra Max, AMD’s Bergamo are offered with up to 128
cores per processor, and Intel’s Granite Rapids (available later this year),
will have a similar number of cores per processor. Less than seven years ago,
Intel’s Skylake CPUs were offered with a maximum of 28 cores. The latest
generation of CPUs also contains onboard accelerators that are optimized for AI
inference workloads.


LENGTHENING OF THE SERVER REPLACEMENT CYCLE

The hyperscale cloud SPs have lengthened the replacement cycle of
general-purpose servers. This measure has the impact of reducing the replacement
cost of general-purpose servers over time, enabling more capex to be allocated
to accelerated systems.


DISAGGREGATION OF COMPUTE, MEMORY, AND STORAGE

Compute and storage have been disaggregated in recent years to improve server
and storage system utilization. We believe that next-generation rack-scale
architectures based on CXL will enable a greater degree of disaggregation,
benefiting the utilization of compute cores, memory, and storage.

forward from：Data Center Infrastructure—a Look into 2024, Baron Fung , Dell’Oro
Group

0 8
13Mar, 2024

GIGALIGHT 400G QSFP-DD SR4, EXCLUSIVE DESIGN TO HELP DATA CENTER INTERCONNECTION

Moving towards the supercomputing era, data centers have ushered in rapid
development. With the continuous evolution of technology, the rise of AI
supercomputing is leading the wave of innovation in the digital field. In this
era with data as the core, the demand for data centers is not only the expansion
of scale, but also the urgent desire for high-speed transmission. The
transmission rate of 400G/800G, just like a powerful digital trend, is
redefining data centers infrastructure.

In this article, Gigalight introduces you to a brand new 400G product: 400G
QSFP-DD SR4 optical module, and see how it is used in today’s data centers.




EXISTING 400G NETWORK SOLUTIONS

The high-speed network in the GPU cluster mainly consists of high-speed network
cards, optical connectors (optical transceivers and cables) and high-speed
switches. Currently, servers equipped with H800GPU mainly use NVIDIA CX7 400G
network cards, and there are many choices of switches on the market. These
options include 64400G QDD switches based on BCM 25.6T Tomahawk4 (TH4) chips,
64800G switches based on BCM 51.2T chips, switches based on Cisco Nexus chips,
and 400G/800G switches based on NVIDIA Spectrum chips. From a market
perspective, 400G QDD switches are currently the dominant choice. The following
figure shows the commonly used network architecture of clusters:



It can be observed that the mainstream 400G switches in the market use 56G
SerDes, while the CX7 network card uses 112G SerDes. In order to keep the
network connected, this difference needs to be considered when selecting optical
transceivers to ensure component compatibility and proper operation. As shown in
the picture:

In order to solve this problem, everyone currently chooses 400G QSFP-DD DR4
optical modules on the switch side, and uses 400G OSFP DR4 optical modules on
the server side. The connection is shown below:



This is a good solution within a connection distance of less than 500m, but if
the connection distance does not exceed 100m, choosing the DR4 solution is a bit
wasteful. Therefore, the short-distance 400G QSFP-DD SR4 using low-cost 850nm
VSCEL laser is a good choice. It is much cheaper than DR4 and can meet the
transmission distance requirement of 100m.

400G QSFP-DD SR4 is inserted into the 400G QSFP-DD 8×50G PAM4 port, which can be
interconnected with the 400G OSFP (4×100G PAM4) network card, and the
interconnection between 400G QSFP-DD SR4 and 400G OSFP SR4 can be realized. . If
shown:



Gigalight’s newly launched 400G QSFP-DD SR4 electrical port uses 8×50G PAM4
modulation, and the optical port uses 4×100G PAM4 modulation. Compared with 400G
QSFP-DD SR8, it reduces 4 lasers and achieves lower Power consumption and price,
power consumption is less than 8W. Using MPO12 optical port, it can meet 60m
transmission with OM3 multi-mode fiber, and 100m transmission with OM4
multi-mode fiber.

The release of Gigalight’s 400G QSFP-DD SR4 fills the gap in short-distance 400G
data center interconnection solutions and provides a more comprehensive choice
for your data center.

0 9
7Mar, 2024

AI DATA CENTER ARCHITECTURE UPGRADE TRIGGERS SURGE IN DEMAND FOR 800G OPTICAL
TRANSCEIVERS

The surge in demand for 800G optical transceivers directly reflects the
increasing demand for artificial intelligence-driven applications. As the
digital environment continues to evolve, the need for faster and more efficient
data transmission becomes imperative. The deployment of 800G optical
transceivers, coupled with the transition to a tier 2 leaf-spine architecture,
reflects a strategic move to meet the needs of modern computing.


WHY DO WE NEED 800G OPTICAL TRANSCEIVERS?

The surge in demand for 800G optical transceivers is closely related to changes
in data center network architecture. The traditional three-tier architecture
(including access tier, aggregation tier and core tier) has been the standard
for many years. As the scale of AI technology and east-west traffic continue to
expand, data center network architecture is also constantly evolving. In the
traditional three-tier topology, data exchange between servers needs to go
through access switches, aggregation switches and core switches, which puts huge
pressure on aggregation switches and core switches.

If the server cluster scale continues to expand according to the traditional
three-tier topology, high-performance equipment will need to be deployed at the
core tier and aggregation tier, resulting in a significant increase in equipment
costs. This is where the new Spine-Leaf topology comes into play, flattening the
traditional three-tier topology into a two-tier architecture. The adoption of
800G optical transceivers has promoted the emergence of Spine-Leaf network
architecture, which has many advantages such as high bandwidth utilization,
excellent scalability, predictable network delay, and enhanced security.

In this architecture, leaf switches serve as access switches in the traditional
three-tier architecture and are directly connected to servers. Spine switches
act as core switches, but they are directly connected to Leaf switches, and each
Spine switch needs to be connected to all Leaf switches.

The number of downlink ports on a Leaf switch determines the number of Leaf
switches, and the number of uplink ports on a Leaf switch determines the number
of Spine switches. Together, they determine the scale of the Spine-Leaf network.

The Leaf-Spine architecture significantly improves the efficiency of data
transmission between servers. When the number of servers needs to be expanded,
the scalability of the data center can be enhanced by simply increasing the
number of Spine switches. The only drawback is that the Spine-Leaf architecture
requires a large number of ports compared to the traditional
three-tire topology. Therefore, servers and switches require more optical
transceivers for fiber optic communications, stimulating the demand for 800G
optical transceivers.


INTRODUCTION TO GIGALIGHT 800G OPTICAL TRANSCEIVERS

In response to the surge in demand for 800G optical transceivers, Gigalight has
successively launched short-distance 800G VR8/SR8 optical transceivers/AOCs
based on VCSEL lasers and 800G DR8/DR8+/DR8++ optical transceivers based on
silicon photonic technology. Gigalight’s silicon optical transceivers and
multi-mode VCSEL optical transceivers constitute a complete interconnection
solution for high-speed AI data centers.

The multi-mode series 800G VR8/SR8/AOC is equipped with high-performance 112Gbps
VCSEL laser and 7nm DSP. The electrical host interface is 112Gbps PAM4 signal
per channel and supports CMIS version 4.0 protocol. Using QSFP-DD, OSFP form
factor, VR8 supports 30 meters (OM3 MMF) and 50 meters (OM4 MMF) transmission
distance; SR8 supports 60 meters (OM3 MMF) and 100 meters (OM4 MMF) transmission
distance, with MPO16 and 2×MPO12 Two interfaces are available, suitable for
short-distance data center application scenarios.

Silicon optical transceivers focus on solving interconnection scenarios with
links exceeding 100 meters. Gigalight silicon optical 800G DR8 supports QSFP-DD
and OSFP two form factors. The DR8 transmission distance is 500m, DR8+ can
transmit 2km, and DR8++ can transmit 10km. The  transceivers uses four 1310nm CW
lasers; the maximum power consumption is less than 18W. The currently released
version supports two connector architectures: MPO16/APC and Dual MPO12/APC.
Compared with the 800G optical transceiver of the conventional 8-channel EML
solution, the silicon optical transceiver can use fewer lasers. For example,
800G DR8 can use one laser to achieve lower power consumption. This year,
Gigalight will also launch 800G QSFP-DD PSM DWDM8 and 800G OSFP/QSFP-DD 2×FR4
optical transceivers based on silicon photonics, providing customers with more
choices.

The adoption of 800G optical transceivers not only solves current challenges,
but also provides forward-looking solutions to accommodate the expected growth
in data processing and transmission. As technology advances, the synergy between
artificial intelligence computing and high-speed optical communications will
play a key role in shaping the future of information technology infrastructure.

10
6May, 2024

GIGALIGHT LAUNCHES 800G OSFP DR8/DR8+ & 2×FR4/2×LR4 SILICON OPTICAL TRANSCEIVERS
WITH 16W POWER CONSUMPTION

May 6, 2024. Shenzhen, China. – In response to the comprehensive goals of
large-scale commercialization and technological advancement of the 800G
architecture in domestic and foreign AI data centers, Gigalight today announced
the launch of 800G OSFP DR8/DR8+/DR8++& 800G OSFP 2×FR4/2×LR4 series of silicon
optical transceivers based on 7nm DSP with a power consumption of 16W The
transceivers has laid a solid delivery foundation for the company to become a
pioneer in this field.

Gigalight’s 800G OSFP 2×FR4 and 800G OSFP 2×LR4 optical transceiver ports use 2×
Dual LC interfaces. The transmitter adopts a single-chip integrated silicon
light modulation chip solution, using 4 CWDM4 light sources, and is implemented
in the integrated silicon light chip. The light source is divided into 1/2 and
CWDM wavelength division and MZ modulation. The receiving end is 2 separate
free-space optical POSAs. It adopts a low-power direct drive 7nm DSP chip
solution. This product has the advantages of low power consumption and high
performance. The key to these two products is The parameters are as follows:

 * TDECQ per channel is less than 2.1dB, better than protocol specification:
   2×FR4<3.4dB; 2×LR4<3.9dB;
 * RxSens (OMA) sensitivity is better than -9dBm @ 2.4e-4 Pre-FEC 53GBd PAM4,
   better than protocol specification: 2×FR4<-4.6dBm, 2×LR4<-6.8dBm;
 * The maximum power consumption of the optical module at three temperatures is
   less than 16W.

800G OSFP 2×LR4 eye diagram

800G OSFP 2×FR4 TDECQ

800G OSFP 2×FR4 OMA sensitivity

Gigalight’s 800G OSFP DR8/DR8+/DR8++ optical transceiver port adopts
2×MPO-12/APC interface. The transmitter adopts a single-chip integrated silicon
light modulation chip solution, using 2 CWL light sources, and the light source
is implemented in the integrated silicon light chip. 1 minute 4 and MZ
modulation, the receiving end is 2 separate FA solutions, using a low-power
direct drive 7nm DSP chip solution. This product has the advantages of low power
consumption and high performance. The key parameters of the product are as
follows:

 * TDECQ per channel is less than 2.0dB, which is better than the protocol
   specification of up to 3.4dB;
 * RxSens (OMA) sensitivity is better than -9dBm @ 2.4e-4 Pre-FEC 53GBd PAM4,
   better than the protocol specification maximum -4.4dBm;
 * Maximum power consumption is less than 16W.

800G OSFP DR8(2×MPO12) eye diagram

Gigalight has mass-produced 400G OSFP-RHS DR4 and 400G QSFP112 DR4 silicon
optical transceivers as early as 2023. The addition of the latest low-power
version of the 800G silicon optical series has strongly promoted the company’s
confidence in the performance growth of the next generation of optical
communications. Gigalight has substantially entered the research and development
of silicon optical chips and silicon optical transceivers since 2018. It has
completed the mass production or sample stage of at least 10 silicon optical
transceivers. Thanks to the strong collaboration of the global supply chain,
there will be more innovations in the future. Unique and differentiated silicon
optical transceivers will be released one after another in Gigalight.


ABOUT GIGALIGHT

As an open optical networking explorer, Gigalight integrates the design,
manufacturing, and sales of both active and passive optical devices and
subsystems. The company’s product portfolio includes optical modules, silicon
photonics modules, liquid-cooled modules, passive optical components, active
optical cables, direct attach copper cables, coherent optical communication
modules, and OPEN DCI BOX subsystems. Gigalight focuses on serving applications
such as data centers, 5G transport networks, metropolitan WDM transmission,
ultra-HD broadcast and video, and more. It stands as an innovative designer of
high-speed optical interconnect hardware solutions.

0 1
30Apr, 2024

O-BAND – THE TRUE 100G DWDM SOLUTION

WDM (Wavelength Division Multiplexing) is a transmission technology that uses a
single optical fiber to simultaneously transmit multiple optical carriers of
different wavelengths in optical fiber communications. All possible wavelengths
are divided into several bands and referring to the ITU-T standards, we know
that single-mode fiber is divided into six bands. They are O, E, S, C, L, U
band.

O-BAND stands for Original Band as it was the first band introduced. O-BAND is
widely used in high-speed Ethernet transmission. O-BAND is known for its use of
quartz glass, a material with zero dispersion wavelength. This small dispersion
allows high-speed optical transmission without the need for dispersion
compensation schemes, and it offers advantages in terms of both initial
investment and operating costs. In short, transceivers are cheaper and consume
less power.

O-BAND’s long service life in datacom and telecommunications applications is
primarily due to its zero dispersion. Chromatic dispersion causes signal
distortion and limits data rates at high transmission speeds (gigabytes per
second, Gb/s). O-BAND eliminates the need and additional cost for dispersion
management such as digital signal processing (DSP) units. Therefore, O-BAND is
ideally suited for high-speed, cost-sensitive high-volume markets. This helps
reduce the cost of the transceiver and lowers operating costs by reducing power
consumption.

The 100G PAM4 DWDM O-BAND solution is designed for customers requiring multiple
100G connections over medium length distances. Gigalight’s COLOR X-ray module
uses the PAM4 DWDM1 O-BAND silicon optical platform, which can be used in 5G
fronthaul applications. The transmission distance reaches 10km. With an external
SOA, it can meet the single-span transmission of 30km.


100G QSFP28 DWDM1

 * Adopting 100G PAM4 silicon photonic MZ modulation technology
 * The electrical port side uses 4X 25G NRZ with built-in FEC-KP4
 * DWDM O-BAND 150GHZ, 16 channels
 * Meets 10km transmission
 * With the addition of external SOA, it can meet the requirement of single-span
   transmission of 30km.
 * Power consumption is expected to be less than 3.5W
 * Applied to 5G fronthaul and DCI interconnection

Gigalight will continue to develop more non-coherent economical DWDM
transmission solutions using silicon photonics and traditional technologies in
100G, 200G and 400G transmission networks, aiming to create a mid-to-long
distance transmission market segment with COLOR X-ray transceiver non-coherent
transceiver , and provide customers with simplified network deployment and
expert-level low-cost interconnect solutions in this market segment.

0 2
17Apr, 2024

COMMUNICASIA MAY 29-31

CommunicAsia

Date:May 29-31

Location:Singapore

Booth

0 3
17Apr, 2024

3 CASE STUDIES THAT PROVE LIQUID COOLING IS THE BEST SOLUTION FOR
NEXT-GENERATION DATA CENTERS

In the relentless pursuit of efficiency, scalability, and sustainability, the
data center industry finds itself at the precipice of a groundbreaking
transformation.This article thrilled to highlight a game-changing innovation
that is poised to reshape the landscape of data center infrastructure – liquid
cooling. With the ever-increasing demands for computing power, the conventional
methods of air cooling are reaching their limits, prompting a paradigm shift
towards liquid cooling as the future of data centers.

Liquid cooling, once reserved for niche applications, is now emerging as a
scalable and efficient solution that promises to unlock the full potential of
modern data centers. By dissipating heat more effectively and enabling
higher-density deployments, liquid cooling addresses the escalating power
densities of advanced computing equipment and positions data centers to handle
the demands of emerging technologies like artificial intelligence, cloud
computing, and edge computing.

In this article, we will delve into the transformative capabilities of liquid
cooling and explore the numerous benefits it offers over traditional air cooling
methods. From energy efficiency and reduced operational costs to improved
performance and environmental sustainability, liquid cooling is leading the
charge in revolutionizing data center technology.


WHAT IS LIQUID COOLING?

Liquid cooling, specifically immersion cooling, is an advanced method utilized
by data centers to efficiently dissipate heat from IT hardware. In immersion
cooling, the IT hardware, including processors, GPUs, and other components, is
submerged directly into a non-conductive liquid. This liquid acts as an
effective coolant, absorbing the heat generated by the hardware during its
operation.

The key principle behind liquid cooling is direct and efficient heat transfer.
As the IT hardware operates, it produces significant amounts of heat due to
high-performance computing tasks, such as Artificial Intelligence, Automation,
and Machine Learning. To maintain optimal performance and prevent overheating,
the generated heat must be dissipated effectively.

In immersion cooling, the liquid coolant surrounds the hardware components,
allowing for direct contact with the heat sources. As a result, the heat is
rapidly and efficiently transferred from the components to the liquid coolant,
ensuring effective cooling of the hardware.

One of the most significant advantages of liquid cooling, especially immersion
cooling, is its unparalleled efficiency and scalability. By directly immersing
the hardware in the coolant, immersion cooling can handle substantially higher
heat densities compared to traditional air-based cooling systems. This
capability makes it an ideal choice for data centers with demanding workloads
and high power densities.

Furthermore, immersion cooling offers virtually unlimited capacity for data
centers. As data center demands continue to increase, and high-performance
computing trends evolve, such as AI, Automation, and Machine Learning, immersion
cooling proves to be a future-proofing solution. It can sustain the power
requirements and efficiently manage the rising heat production, ensuring data
centers remain flexible and adaptable to emerging technologies.


CASE STUDIES


CASE STUDY 1: LAWRENCE LIVERMORE NATIONAL LABORATORY (LLNL)

Industry: Research and High-Performance Computing

Challenge: LLNL operates some of the world’s most powerful supercomputers for
scientific research, including climate modeling, nuclear simulations, and
astrophysics. These supercomputers generate immense heat, requiring an efficient
cooling solution to maintain peak performance.

Solution: LLNL adopted an immersion cooling solution for its HPC systems,
submerging the server racks directly in a non-conductive cooling fluid.

Benefits:

Improved Cooling Efficiency: Liquid cooling effectively transferred heat away
from critical components, enabling LLNL to run their supercomputers at higher
power densities while maintaining optimal performance.

Energy Savings: The increased cooling efficiency allowed LLNL to reduce the
power consumption required for cooling, resulting in significant energy savings.

Footprint Reduction: Liquid cooling eliminated the need for traditional air
cooling infrastructure, reducing the physical footprint of the data center and
enabling more efficient space utilization.

Noise Reduction: The absence of cooling fans and reduced airflow resulted in a
quieter and more pleasant working environment.



CASE STUDY 2: ADVANIA DATA CENTERS

Industry: Data Hosting and Cloud Services

Challenge: Advania Data Centers faced the challenge of efficiently cooling
high-density server racks for their cloud services and data hosting operations.

Solution: Advania Data Centers adopted an innovative two-phase liquid cooling
solution to address the demanding cooling requirements.

Benefits:

Scalability: The liquid cooling system allowed Advania to deploy high-density
server racks without compromising on cooling capacity, enabling efficient
resource utilization.

Sustainable Operations: The liquid cooling system reduced the data center’s
overall energy consumption, contributing to lower carbon emissions and aligning
with their sustainability initiatives.

High Performance: With efficient cooling, Advania Data Centers achieved
consistent and reliable performance for their cloud services, ensuring excellent
service levels for their customers.

Cost Savings: The reduced energy consumption and improved performance led to
significant cost savings for Advania Data Centers over time.



CASE STUDY 3: TECH DATA ADVANCED SOLUTIONS

Industry: High-Performance Computing Solutions

Challenge: Tech Data Advanced Solutions needed a cooling solution to support
their high-performance computing clusters used for artificial intelligence and
data analytics.

Solution: Tech Data Advanced Solutions deployed a liquid cooling system that
utilized direct-to-chip cooling technology.

Benefits:

Overclocking Capabilities: Liquid cooling enabled Tech Data to overclock their
CPUs, achieving higher processing speeds and maximizing computing performance.

Reduced Maintenance: Liquid cooling minimized dust buildup and prevented air
circulation issues, reducing the need for frequent maintenance and downtime.

Enhanced Performance: With improved cooling efficiency, Tech Data experienced
higher CPU performance and optimized computing power for their HPC clusters.

Future-Proofing: The liquid cooling solution positioned Tech Data to handle the
heat requirements of future hardware upgrades and emerging technologies.

These case studies exemplify how liquid cooling delivers significant benefits to
data centers across various industries. From increased cooling efficiency and
energy savings to scalability, sustainability, and

improved performance, liquid cooling proves to be a game-changing technology
that ensures data centers can meet the evolving demands of high-performance
computing and remain at the forefront of innovation in the digital age.


THE FUTURE OF LIQUID COOLING

In conclusion, liquid cooling, specifically immersion cooling, is a
game-changing technology that data centers are adopting to address the
escalating demands of high-performance computing. By directly submerging IT
hardware into a non-conductive liquid, liquid cooling enables efficient heat
dissipation and supports the sustained performance of critical components. As
the data center industry embraces cutting-edge trends and advances in AI,
Automation, and Machine Learning, liquid cooling stands at the forefront,
offering the highest level of efficiency and ensuring the future-proofing of
data center infrastructure.

0 4
16Apr, 2024

ICTCOMM JUNE 6-8

ICTCOMM

June 6-8

0 5
29Mar, 2024

IS A COPPER TRANSCEIVER OR AN OPTICAL TRANSCEIVER, DAC, AOC BETTER?

The copper transceiver is a communication interface that through copper cables
(such as twisted pair network cables). It is also a type of optical transceiver.

With the rapid development of communication technology, various transceivers
have sprung up, among which copper transceivers, optical transceivers, DAC
(Direct Attach Cable) and AOC (Active Optical Cable) have become hot choices in
the industry. These transceivers have their own strengths and play important
roles in different scenarios. To better meet communication needs, we need to
deeply understand their characteristics and advantages in order to make wise
choices in practical applications. Next, this article will focus on the
comparison between copper transceivers, optical transceivers, DAC, and AOC,
aiming to help readers better understand and choose suitable communication
transceivers for themselves.




COPPER TRANSCEIVER VS DAC

Both the copper transceiver and the DAC are suitable for short-distance
transmission applications, and both are transmitted through copper cables.
However, the transmission distance of the copper transceiver is larger than that
of the DAC. The transmission distance of the DAC generally does not exceed 7m,
while the copper transceiver can transmit 30m.


COPPER TRANSCEIVER VS AOC

The copper transceiver uses copper cable for transmission, while the AOC uses
optical cable. Therefore, the copper transceiver has a longer transmission
distance, up to 300m. AOC has enhanced signal integrity and flexible deployment
methods, and has better air flow and heat dissipation in the computer room
cabling system, but its cost is higher than copper cabling at the 10G rate.


COPPER TRANSCEIVER VS OPTICAL TRANSCEIVER

Compared with optical transceivers, copper transceivers use copper cables for
wiring, while optical transceivers require optical fibers for wiring. If the
original wiring system uses copper cables, using copper transceivers can reuse
the previous copper cable wiring resources to complete the 10G network deploy.
In terms of transmission distance, the transmission distance of the copper
transceivers is relatively short, and the transmission distance of the optical
transceiver can be as high as 120km according to different combinations.


GIGALIGHT COPPER TRANSCEIVER

100M Copper SFP, including 100M single rate and 10/100M adaptive rate, adopts
RJ45 interface, and can transmit up to 100m with Cat5/5e network cable. There
are two options: commercial grade and industrial grade.

1G Copper SFP, including 1G and 10/100/1000m adaptive rate, also uses RJ45
interface, can transmit 100m with Cat5/5e network cable, and the temperature
range is commercial grade.

10G Copper SFP supports 10G rate transmission, uses RJ45 interface, and can
transmit up to 30m with Cat6/6A network cable, and the temperature range is
commercial grade.

From the latest perspective, copper transceivers are still widely used in
Ethernet, especially for connections within data centers and local area
networks. They are known for their reliability and cost-effectiveness, making
them a popular choice for many organizations. However, as the demand for higher
data rates and bandwidth continues to increase, some applications have turned to
optical transceivers because of their ability to support higher data rates and
longer transmission distances.

Overall, copper transceivers continue to play a vital role in network
infrastructure, providing a stable and efficient way to transmit data over
copper cables. Their versatility and compatibility with existing network setups
make them an essential component in modern communication systems.

0 6
25Mar, 2024

GIGALIGHT INNOVATIVELY LAUNCHES LINEAR 400G DR4 CPO SILICON OPTICAL ENGINE

Shenzhen, China, March. 25, 2024 – GIGALIGHT recently announced the launch of a
400G DR4 CPO silicon optical engine based on linear direct drive technology.
This is a subset of Gigabyte’s innovative products for the next optical network
era:

1.The linear silicon optical engine 400G DR4 CPO is composed of SOCKET slot
packaging and LPO linear direct drive technology. Compared with the
traditionally defined NPO/CPO, linear CPO silicon photonic engines remove DSP,
which can significantly reduce system-level power consumption and costs. The
light emitted from the TX end of this engine is in the range of 0-3dBm, and the
extinction ratio falls in the range of 4-5dB. TDECQ<2.5dB, generally falls
within 1-2dB. Wavelength is 1304.5nm-1317.5nm; SMSR≥30dB; RX end OMA sensitivity
<-5.5dBm. The eye diagram is as follows:

2.Through the test board with DSP and external pluggable light source specially
developed by GIGALIGHT, the linear 400G CPO optical engine can be completely
restored.

3.GIGALIGHT plans to upgrade the engine to 800G and 1.6T through higher-density
advanced packaging technology.

GIGALIGHT’s research on CPO originated from the Shenzhen Science and Technology
Innovation Commission’s co-packaging CPO optical project undertaken by the
company. Linear CPO is a relatively friendly technology form that can implement
higher-speed and higher-density switches under the premise of limited
low-nanometer manufacturing processes. Reduce power consumption and improve
system interconnection reliability. Truly realize the goal of de-DSP for
next-generation switches. Compared with the pluggable LPO technology that has
fundamental flaws that the industry is currently working on, linear CPO is a
stable technology. It should be said objectively that linear CPO is technically
inspired by LPO and original CPO technology, mainly to more easily solve many
problems such as system signal consistency and reliability. GIGALIGHT will delve
into silicon optical linear CPO technology solutions.


ABOUT GIGALIGHT

As an open optical networking explorer, Gigalight integrates the design,
manufacturing, and sales of both active and passive optical devices and
subsystems. The company’s product portfolio includes optical modules, silicon
photonics modules, liquid-cooled modules, passive optical components, active
optical cables, direct attach copper cables, coherent optical communication
modules, and OPEN DCI BOX subsystems. Gigalight focuses on serving applications
such as data centers, 5G transport networks, metropolitan WDM transmission,
ultra-HD broadcast and video, and more. It stands as an innovative designer of
high-speed optical interconnect hardware solutions.

0 7
25Mar, 2024

LOOKING AHEAD TO 2024 DATA CENTER INFRASTRUCTURE

Recently, DeLL’ORO GROUP released a forecast report, reviewing the outstanding
trends in the 23-year data center infrastructure report and looking forward to
the development of data center infrastructure in 2024. The following is the
report content.




OUTSTANDING TRENDS HIGHLIGHTED IN 2023 FORECASTS

 * Data center capex growth in 2023 has decelerated noticeably, as projected
   after a surge of spending growth in 2022. The top 4 US cloud service
   providers (SPs) in aggregate slowed their capex significantly in 2023, with
   Amazon and Meta undergoing a digestion cycle, while Microsoft and Google are
   on track to increase their greenfield spending on accelerated computing
   deployments and data centers. The China Cloud SP market remains depressed as
   cloud demand remains soft from macroeconomic and regulatory headwinds,
   although there are signs of a turnaround in second-half 2023 from AI-related
   investments. The enterprise server and storage system market performed worse
   than expected, as most of the OEMs are on track to experience a double-digit
   decline in revenue growth in 2023 from a combination of inventory correction,
   and lower end-demand given the economic uncertainties. However, network and
   physical infrastructure OEMs have fared better in 2023 because strong backlog
   shipments fulfilled in the first half of 2023 which lifted revenue growth.
 * We underestimated the impact of accelerated computing investments to enable
   AI applications in 2023. During that year, we saw a pronounced shift in
   spending from general-purpose computing to accelerated computing and
   complementary equipment for network and physical infrastructure. AI training
   models have become larger and more sophisticated, demanding the latest
   advances in accelerators such as GPUs and network connectivity. The high cost
   of AI-related infrastructure that was deployed helped to offset the sharp
   decline in the general-purpose computing market. However, supplies on
   accelerators have remained tight, given strong demand from new hyperscale.
 * General-purpose computing has taken a backseat to accelerated computing in
   2023, despite significant CPU refreshes from Intel and AMD with their
   fourth-generation processors. These new server platforms feature the latest
   in server interconnect technology, such as PCIe 5, DDR5, and more importantly
   CXL. CXL has the ability to aggregate memory usage across servers, improving
   overall utilization. However, general-purpose server demand has been soft,
   and the transition to the fourth-generation CPU platforms has been slower
   than expected (although AMD made significant progress in 3Q23). Furthermore,
   CXL adoption is limited to the hyperscale market, with limited use cases.
 * Server connectivity is advancing faster than what we had expected a year ago.
   In particular, accelerated computing is on a speed transition cycle at least
   a generation ahead of the mainstream market. Currently, accelerated servers
   with NVIDIA H100 GPUs feature network adapters at up 400 Gbps with 112 Gbps
   SerDes, and bandwidth will double in the next generation of GPUs a year from
   now. Furthermore, Smart NIC adoption continues to gain adoption, though,
   mostly limited to the hyperscale market. According to our Ethernet Adapter
   and Smart NIC report, Smart NIC revenues increased by more than 50% in 2023.
 * The edge computing market has been slow to materialize, and we reduced our
   forecast in the recent Telecom Server report, given that the ecosystem and
   more compelling use cases need to be developed, and that additional adopters
   beyond the early adopters have been limited.

According to our Data Center IT Capex report, we project data center capex to
return to double-digit growth in 2024 as market conditions normalize.
Accelerated computing will remain at the forefront of capex plans for the
hyperscalers and enterprise market to enable AI-related and other domain
specific workloads. Given the high cost of accelerated servers and their
specialized networking and infrastructure requirements, the end-users will need
to be more selective in their capex priorities. While deployments of
general-purpose servers are expected to rebound in 2024, we believe greater
emphasis will be made to increase server efficiency and utilization, while
curtailing cost increases.

Below, we highlight key trends that can enhance the optimization of the overall
server footprint and decrease the total cost of ownership for end-users:


ACCELERATED COMPUTING MAINTAINS MOMENTUM

We estimate that 11% of the server unit shipments are accelerated in 2023, and
are forecast to grow at a five-year compound annual growth rate approaching 30%.
Accelerated Servers contain accelerators such as GPUs, FPGAs, or custom ASICs,
and are more efficient than general-purpose servers when matched to
domain-specific workloads. GPUs will likely remain as the primary choice for
training large AI models, as well as running inference applications. While
NVIDIA currently has a dominant share in the GPU market, we anticipate that
other vendors such as AMD and Intel will gain some share over time as customers
seek greater vendor diversity. Greater choices in the supply chain could
translate to much-needed supply availability and cost reduction to enable
sustainable growth of accelerated computing.


ADVANCEMENTS IN NEXT-GENERATION SERVER PLATFORM

General-purpose servers have been increasing in compute density, as evolution in
the CPUs is enabling servers with more processor cores per CPU, memory, and
bandwidth. Ampere Computing Altra Max, AMD’s Bergamo are offered with up to 128
cores per processor, and Intel’s Granite Rapids (available later this year),
will have a similar number of cores per processor. Less than seven years ago,
Intel’s Skylake CPUs were offered with a maximum of 28 cores. The latest
generation of CPUs also contains onboard accelerators that are optimized for AI
inference workloads.


LENGTHENING OF THE SERVER REPLACEMENT CYCLE

The hyperscale cloud SPs have lengthened the replacement cycle of
general-purpose servers. This measure has the impact of reducing the replacement
cost of general-purpose servers over time, enabling more capex to be allocated
to accelerated systems.


DISAGGREGATION OF COMPUTE, MEMORY, AND STORAGE

Compute and storage have been disaggregated in recent years to improve server
and storage system utilization. We believe that next-generation rack-scale
architectures based on CXL will enable a greater degree of disaggregation,
benefiting the utilization of compute cores, memory, and storage.

forward from：Data Center Infrastructure—a Look into 2024, Baron Fung , Dell’Oro
Group

0 8
13Mar, 2024

GIGALIGHT 400G QSFP-DD SR4, EXCLUSIVE DESIGN TO HELP DATA CENTER INTERCONNECTION

Moving towards the supercomputing era, data centers have ushered in rapid
development. With the continuous evolution of technology, the rise of AI
supercomputing is leading the wave of innovation in the digital field. In this
era with data as the core, the demand for data centers is not only the expansion
of scale, but also the urgent desire for high-speed transmission. The
transmission rate of 400G/800G, just like a powerful digital trend, is
redefining data centers infrastructure.

In this article, Gigalight introduces you to a brand new 400G product: 400G
QSFP-DD SR4 optical module, and see how it is used in today’s data centers.




EXISTING 400G NETWORK SOLUTIONS

The high-speed network in the GPU cluster mainly consists of high-speed network
cards, optical connectors (optical transceivers and cables) and high-speed
switches. Currently, servers equipped with H800GPU mainly use NVIDIA CX7 400G
network cards, and there are many choices of switches on the market. These
options include 64400G QDD switches based on BCM 25.6T Tomahawk4 (TH4) chips,
64800G switches based on BCM 51.2T chips, switches based on Cisco Nexus chips,
and 400G/800G switches based on NVIDIA Spectrum chips. From a market
perspective, 400G QDD switches are currently the dominant choice. The following
figure shows the commonly used network architecture of clusters:



It can be observed that the mainstream 400G switches in the market use 56G
SerDes, while the CX7 network card uses 112G SerDes. In order to keep the
network connected, this difference needs to be considered when selecting optical
transceivers to ensure component compatibility and proper operation. As shown in
the picture:

In order to solve this problem, everyone currently chooses 400G QSFP-DD DR4
optical modules on the switch side, and uses 400G OSFP DR4 optical modules on
the server side. The connection is shown below:



This is a good solution within a connection distance of less than 500m, but if
the connection distance does not exceed 100m, choosing the DR4 solution is a bit
wasteful. Therefore, the short-distance 400G QSFP-DD SR4 using low-cost 850nm
VSCEL laser is a good choice. It is much cheaper than DR4 and can meet the
transmission distance requirement of 100m.

400G QSFP-DD SR4 is inserted into the 400G QSFP-DD 8×50G PAM4 port, which can be
interconnected with the 400G OSFP (4×100G PAM4) network card, and the
interconnection between 400G QSFP-DD SR4 and 400G OSFP SR4 can be realized. . If
shown:



Gigalight’s newly launched 400G QSFP-DD SR4 electrical port uses 8×50G PAM4
modulation, and the optical port uses 4×100G PAM4 modulation. Compared with 400G
QSFP-DD SR8, it reduces 4 lasers and achieves lower Power consumption and price,
power consumption is less than 8W. Using MPO12 optical port, it can meet 60m
transmission with OM3 multi-mode fiber, and 100m transmission with OM4
multi-mode fiber.

The release of Gigalight’s 400G QSFP-DD SR4 fills the gap in short-distance 400G
data center interconnection solutions and provides a more comprehensive choice
for your data center.

0 9
7Mar, 2024

AI DATA CENTER ARCHITECTURE UPGRADE TRIGGERS SURGE IN DEMAND FOR 800G OPTICAL
TRANSCEIVERS

The surge in demand for 800G optical transceivers directly reflects the
increasing demand for artificial intelligence-driven applications. As the
digital environment continues to evolve, the need for faster and more efficient
data transmission becomes imperative. The deployment of 800G optical
transceivers, coupled with the transition to a tier 2 leaf-spine architecture,
reflects a strategic move to meet the needs of modern computing.


WHY DO WE NEED 800G OPTICAL TRANSCEIVERS?

The surge in demand for 800G optical transceivers is closely related to changes
in data center network architecture. The traditional three-tier architecture
(including access tier, aggregation tier and core tier) has been the standard
for many years. As the scale of AI technology and east-west traffic continue to
expand, data center network architecture is also constantly evolving. In the
traditional three-tier topology, data exchange between servers needs to go
through access switches, aggregation switches and core switches, which puts huge
pressure on aggregation switches and core switches.

If the server cluster scale continues to expand according to the traditional
three-tier topology, high-performance equipment will need to be deployed at the
core tier and aggregation tier, resulting in a significant increase in equipment
costs. This is where the new Spine-Leaf topology comes into play, flattening the
traditional three-tier topology into a two-tier architecture. The adoption of
800G optical transceivers has promoted the emergence of Spine-Leaf network
architecture, which has many advantages such as high bandwidth utilization,
excellent scalability, predictable network delay, and enhanced security.

In this architecture, leaf switches serve as access switches in the traditional
three-tier architecture and are directly connected to servers. Spine switches
act as core switches, but they are directly connected to Leaf switches, and each
Spine switch needs to be connected to all Leaf switches.

The number of downlink ports on a Leaf switch determines the number of Leaf
switches, and the number of uplink ports on a Leaf switch determines the number
of Spine switches. Together, they determine the scale of the Spine-Leaf network.

The Leaf-Spine architecture significantly improves the efficiency of data
transmission between servers. When the number of servers needs to be expanded,
the scalability of the data center can be enhanced by simply increasing the
number of Spine switches. The only drawback is that the Spine-Leaf architecture
requires a large number of ports compared to the traditional
three-tire topology. Therefore, servers and switches require more optical
transceivers for fiber optic communications, stimulating the demand for 800G
optical transceivers.


INTRODUCTION TO GIGALIGHT 800G OPTICAL TRANSCEIVERS

In response to the surge in demand for 800G optical transceivers, Gigalight has
successively launched short-distance 800G VR8/SR8 optical transceivers/AOCs
based on VCSEL lasers and 800G DR8/DR8+/DR8++ optical transceivers based on
silicon photonic technology. Gigalight’s silicon optical transceivers and
multi-mode VCSEL optical transceivers constitute a complete interconnection
solution for high-speed AI data centers.

The multi-mode series 800G VR8/SR8/AOC is equipped with high-performance 112Gbps
VCSEL laser and 7nm DSP. The electrical host interface is 112Gbps PAM4 signal
per channel and supports CMIS version 4.0 protocol. Using QSFP-DD, OSFP form
factor, VR8 supports 30 meters (OM3 MMF) and 50 meters (OM4 MMF) transmission
distance; SR8 supports 60 meters (OM3 MMF) and 100 meters (OM4 MMF) transmission
distance, with MPO16 and 2×MPO12 Two interfaces are available, suitable for
short-distance data center application scenarios.

Silicon optical transceivers focus on solving interconnection scenarios with
links exceeding 100 meters. Gigalight silicon optical 800G DR8 supports QSFP-DD
and OSFP two form factors. The DR8 transmission distance is 500m, DR8+ can
transmit 2km, and DR8++ can transmit 10km. The  transceivers uses four 1310nm CW
lasers; the maximum power consumption is less than 18W. The currently released
version supports two connector architectures: MPO16/APC and Dual MPO12/APC.
Compared with the 800G optical transceiver of the conventional 8-channel EML
solution, the silicon optical transceiver can use fewer lasers. For example,
800G DR8 can use one laser to achieve lower power consumption. This year,
Gigalight will also launch 800G QSFP-DD PSM DWDM8 and 800G OSFP/QSFP-DD 2×FR4
optical transceivers based on silicon photonics, providing customers with more
choices.

The adoption of 800G optical transceivers not only solves current challenges,
but also provides forward-looking solutions to accommodate the expected growth
in data processing and transmission. As technology advances, the synergy between
artificial intelligence computing and high-speed optical communications will
play a key role in shaping the future of information technology infrastructure.

10
6May, 2024

GIGALIGHT LAUNCHES 800G OSFP DR8/DR8+ & 2×FR4/2×LR4 SILICON OPTICAL TRANSCEIVERS
WITH 16W POWER CONSUMPTION

May 6, 2024. Shenzhen, China. – In response to the comprehensive goals of
large-scale commercialization and technological advancement of the 800G
architecture in domestic and foreign AI data centers, Gigalight today announced
the launch of 800G OSFP DR8/DR8+/DR8++& 800G OSFP 2×FR4/2×LR4 series of silicon
optical transceivers based on 7nm DSP with a power consumption of 16W The
transceivers has laid a solid delivery foundation for the company to become a
pioneer in this field.

Gigalight’s 800G OSFP 2×FR4 and 800G OSFP 2×LR4 optical transceiver ports use 2×
Dual LC interfaces. The transmitter adopts a single-chip integrated silicon
light modulation chip solution, using 4 CWDM4 light sources, and is implemented
in the integrated silicon light chip. The light source is divided into 1/2 and
CWDM wavelength division and MZ modulation. The receiving end is 2 separate
free-space optical POSAs. It adopts a low-power direct drive 7nm DSP chip
solution. This product has the advantages of low power consumption and high
performance. The key to these two products is The parameters are as follows:

 * TDECQ per channel is less than 2.1dB, better than protocol specification:
   2×FR4<3.4dB; 2×LR4<3.9dB;
 * RxSens (OMA) sensitivity is better than -9dBm @ 2.4e-4 Pre-FEC 53GBd PAM4,
   better than protocol specification: 2×FR4<-4.6dBm, 2×LR4<-6.8dBm;
 * The maximum power consumption of the optical module at three temperatures is
   less than 16W.

800G OSFP 2×LR4 eye diagram

800G OSFP 2×FR4 TDECQ

800G OSFP 2×FR4 OMA sensitivity

Gigalight’s 800G OSFP DR8/DR8+/DR8++ optical transceiver port adopts
2×MPO-12/APC interface. The transmitter adopts a single-chip integrated silicon
light modulation chip solution, using 2 CWL light sources, and the light source
is implemented in the integrated silicon light chip. 1 minute 4 and MZ
modulation, the receiving end is 2 separate FA solutions, using a low-power
direct drive 7nm DSP chip solution. This product has the advantages of low power
consumption and high performance. The key parameters of the product are as
follows:

 * TDECQ per channel is less than 2.0dB, which is better than the protocol
   specification of up to 3.4dB;
 * RxSens (OMA) sensitivity is better than -9dBm @ 2.4e-4 Pre-FEC 53GBd PAM4,
   better than the protocol specification maximum -4.4dBm;
 * Maximum power consumption is less than 16W.

800G OSFP DR8(2×MPO12) eye diagram

Gigalight has mass-produced 400G OSFP-RHS DR4 and 400G QSFP112 DR4 silicon
optical transceivers as early as 2023. The addition of the latest low-power
version of the 800G silicon optical series has strongly promoted the company’s
confidence in the performance growth of the next generation of optical
communications. Gigalight has substantially entered the research and development
of silicon optical chips and silicon optical transceivers since 2018. It has
completed the mass production or sample stage of at least 10 silicon optical
transceivers. Thanks to the strong collaboration of the global supply chain,
there will be more innovations in the future. Unique and differentiated silicon
optical transceivers will be released one after another in Gigalight.


ABOUT GIGALIGHT

As an open optical networking explorer, Gigalight integrates the design,
manufacturing, and sales of both active and passive optical devices and
subsystems. The company’s product portfolio includes optical modules, silicon
photonics modules, liquid-cooled modules, passive optical components, active
optical cables, direct attach copper cables, coherent optical communication
modules, and OPEN DCI BOX subsystems. Gigalight focuses on serving applications
such as data centers, 5G transport networks, metropolitan WDM transmission,
ultra-HD broadcast and video, and more. It stands as an innovative designer of
high-speed optical interconnect hardware solutions.

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30Apr, 2024

O-BAND – THE TRUE 100G DWDM SOLUTION

WDM (Wavelength Division Multiplexing) is a transmission technology that uses a
single optical fiber to simultaneously transmit multiple optical carriers of
different wavelengths in optical fiber communications. All possible wavelengths
are divided into several bands and referring to the ITU-T standards, we know
that single-mode fiber is divided into six bands. They are O, E, S, C, L, U
band.

O-BAND stands for Original Band as it was the first band introduced. O-BAND is
widely used in high-speed Ethernet transmission. O-BAND is known for its use of
quartz glass, a material with zero dispersion wavelength. This small dispersion
allows high-speed optical transmission without the need for dispersion
compensation schemes, and it offers advantages in terms of both initial
investment and operating costs. In short, transceivers are cheaper and consume
less power.

O-BAND’s long service life in datacom and telecommunications applications is
primarily due to its zero dispersion. Chromatic dispersion causes signal
distortion and limits data rates at high transmission speeds (gigabytes per
second, Gb/s). O-BAND eliminates the need and additional cost for dispersion
management such as digital signal processing (DSP) units. Therefore, O-BAND is
ideally suited for high-speed, cost-sensitive high-volume markets. This helps
reduce the cost of the transceiver and lowers operating costs by reducing power
consumption.

The 100G PAM4 DWDM O-BAND solution is designed for customers requiring multiple
100G connections over medium length distances. Gigalight’s COLOR X-ray module
uses the PAM4 DWDM1 O-BAND silicon optical platform, which can be used in 5G
fronthaul applications. The transmission distance reaches 10km. With an external
SOA, it can meet the single-span transmission of 30km.


100G QSFP28 DWDM1

 * Adopting 100G PAM4 silicon photonic MZ modulation technology
 * The electrical port side uses 4X 25G NRZ with built-in FEC-KP4
 * DWDM O-BAND 150GHZ, 16 channels
 * Meets 10km transmission
 * With the addition of external SOA, it can meet the requirement of single-span
   transmission of 30km.
 * Power consumption is expected to be less than 3.5W
 * Applied to 5G fronthaul and DCI interconnection

Gigalight will continue to develop more non-coherent economical DWDM
transmission solutions using silicon photonics and traditional technologies in
100G, 200G and 400G transmission networks, aiming to create a mid-to-long
distance transmission market segment with COLOR X-ray transceiver non-coherent
transceiver , and provide customers with simplified network deployment and
expert-level low-cost interconnect solutions in this market segment.

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17Apr, 2024

COMMUNICASIA MAY 29-31

CommunicAsia

Date:May 29-31

Location:Singapore

Booth

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17Apr, 2024

3 CASE STUDIES THAT PROVE LIQUID COOLING IS THE BEST SOLUTION FOR
NEXT-GENERATION DATA CENTERS

In the relentless pursuit of efficiency, scalability, and sustainability, the
data center industry finds itself at the precipice of a groundbreaking
transformation.This article thrilled to highlight a game-changing innovation
that is poised to reshape the landscape of data center infrastructure – liquid
cooling. With the ever-increasing demands for computing power, the conventional
methods of air cooling are reaching their limits, prompting a paradigm shift
towards liquid cooling as the future of data centers.

Liquid cooling, once reserved for niche applications, is now emerging as a
scalable and efficient solution that promises to unlock the full potential of
modern data centers. By dissipating heat more effectively and enabling
higher-density deployments, liquid cooling addresses the escalating power
densities of advanced computing equipment and positions data centers to handle
the demands of emerging technologies like artificial intelligence, cloud
computing, and edge computing.

In this article, we will delve into the transformative capabilities of liquid
cooling and explore the numerous benefits it offers over traditional air cooling
methods. From energy efficiency and reduced operational costs to improved
performance and environmental sustainability, liquid cooling is leading the
charge in revolutionizing data center technology.


WHAT IS LIQUID COOLING?

Liquid cooling, specifically immersion cooling, is an advanced method utilized
by data centers to efficiently dissipate heat from IT hardware. In immersion
cooling, the IT hardware, including processors, GPUs, and other components, is
submerged directly into a non-conductive liquid. This liquid acts as an
effective coolant, absorbing the heat generated by the hardware during its
operation.

The key principle behind liquid cooling is direct and efficient heat transfer.
As the IT hardware operates, it produces significant amounts of heat due to
high-performance computing tasks, such as Artificial Intelligence, Automation,
and Machine Learning. To maintain optimal performance and prevent overheating,
the generated heat must be dissipated effectively.

In immersion cooling, the liquid coolant surrounds the hardware components,
allowing for direct contact with the heat sources. As a result, the heat is
rapidly and efficiently transferred from the components to the liquid coolant,
ensuring effective cooling of the hardware.

One of the most significant advantages of liquid cooling, especially immersion
cooling, is its unparalleled efficiency and scalability. By directly immersing
the hardware in the coolant, immersion cooling can handle substantially higher
heat densities compared to traditional air-based cooling systems. This
capability makes it an ideal choice for data centers with demanding workloads
and high power densities.

Furthermore, immersion cooling offers virtually unlimited capacity for data
centers. As data center demands continue to increase, and high-performance
computing trends evolve, such as AI, Automation, and Machine Learning, immersion
cooling proves to be a future-proofing solution. It can sustain the power
requirements and efficiently manage the rising heat production, ensuring data
centers remain flexible and adaptable to emerging technologies.


CASE STUDIES


CASE STUDY 1: LAWRENCE LIVERMORE NATIONAL LABORATORY (LLNL)

Industry: Research and High-Performance Computing

Challenge: LLNL operates some of the world’s most powerful supercomputers for
scientific research, including climate modeling, nuclear simulations, and
astrophysics. These supercomputers generate immense heat, requiring an efficient
cooling solution to maintain peak performance.

Solution: LLNL adopted an immersion cooling solution for its HPC systems,
submerging the server racks directly in a non-conductive cooling fluid.

Benefits:

Improved Cooling Efficiency: Liquid cooling effectively transferred heat away
from critical components, enabling LLNL to run their supercomputers at higher
power densities while maintaining optimal performance.

Energy Savings: The increased cooling efficiency allowed LLNL to reduce the
power consumption required for cooling, resulting in significant energy savings.

Footprint Reduction: Liquid cooling eliminated the need for traditional air
cooling infrastructure, reducing the physical footprint of the data center and
enabling more efficient space utilization.

Noise Reduction: The absence of cooling fans and reduced airflow resulted in a
quieter and more pleasant working environment.



CASE STUDY 2: ADVANIA DATA CENTERS

Industry: Data Hosting and Cloud Services

Challenge: Advania Data Centers faced the challenge of efficiently cooling
high-density server racks for their cloud services and data hosting operations.

Solution: Advania Data Centers adopted an innovative two-phase liquid cooling
solution to address the demanding cooling requirements.

Benefits:

Scalability: The liquid cooling system allowed Advania to deploy high-density
server racks without compromising on cooling capacity, enabling efficient
resource utilization.

Sustainable Operations: The liquid cooling system reduced the data center’s
overall energy consumption, contributing to lower carbon emissions and aligning
with their sustainability initiatives.

High Performance: With efficient cooling, Advania Data Centers achieved
consistent and reliable performance for their cloud services, ensuring excellent
service levels for their customers.

Cost Savings: The reduced energy consumption and improved performance led to
significant cost savings for Advania Data Centers over time.



CASE STUDY 3: TECH DATA ADVANCED SOLUTIONS

Industry: High-Performance Computing Solutions

Challenge: Tech Data Advanced Solutions needed a cooling solution to support
their high-performance computing clusters used for artificial intelligence and
data analytics.

Solution: Tech Data Advanced Solutions deployed a liquid cooling system that
utilized direct-to-chip cooling technology.

Benefits:

Overclocking Capabilities: Liquid cooling enabled Tech Data to overclock their
CPUs, achieving higher processing speeds and maximizing computing performance.

Reduced Maintenance: Liquid cooling minimized dust buildup and prevented air
circulation issues, reducing the need for frequent maintenance and downtime.

Enhanced Performance: With improved cooling efficiency, Tech Data experienced
higher CPU performance and optimized computing power for their HPC clusters.

Future-Proofing: The liquid cooling solution positioned Tech Data to handle the
heat requirements of future hardware upgrades and emerging technologies.

These case studies exemplify how liquid cooling delivers significant benefits to
data centers across various industries. From increased cooling efficiency and
energy savings to scalability, sustainability, and

improved performance, liquid cooling proves to be a game-changing technology
that ensures data centers can meet the evolving demands of high-performance
computing and remain at the forefront of innovation in the digital age.


THE FUTURE OF LIQUID COOLING

In conclusion, liquid cooling, specifically immersion cooling, is a
game-changing technology that data centers are adopting to address the
escalating demands of high-performance computing. By directly submerging IT
hardware into a non-conductive liquid, liquid cooling enables efficient heat
dissipation and supports the sustained performance of critical components. As
the data center industry embraces cutting-edge trends and advances in AI,
Automation, and Machine Learning, liquid cooling stands at the forefront,
offering the highest level of efficiency and ensuring the future-proofing of
data center infrastructure.

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16Apr, 2024

ICTCOMM JUNE 6-8

ICTCOMM

June 6-8

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Email sales@gigalight.com

Headquarters Shenzhen, China

ABOUT US

GIGALIGHT focuses on the R&D, production and sales of pluggable optical modules,
active optical cables, direct-attach copper cables and passive optics. The
company provides data center & cloud computing, 5G and metro telecommunications,
coherent optical communications, ultra-high-definition video and other customers
with high-speed interconnect products and solutions with innovative design,
reliable quality and cost optimization.



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