In 2023, amid the AGI boom, computing power took center stage in global digital infrastructure. Beyond NVIDIA GPUs' dazzling performance, Mellanox switching equipment also surged unexpectedly, emerging as the biggest dark horse. This is because, with compute-fabric convergence, communication has become the core bottleneck in large-scale distributed computing systems, with even half of the time consumed by data communication. Consequently, various innovative optical solutions have arisen, heralding a golden decade for photonics.
 
By most measures, 2023 marks the first year of the AI era, witnessing explosive growth in NVIDIA-led 800G/400G single-mode and multi-mode product deployments. The typical applications for 800G/400G NVIDIA multi-mode optical modules are illustrated below:

The typical applications for 800G/400G NVIDIA multi-mode optical modules are illustrated

The optical modules involved are: the 800G OSFP SR8 (Dual MPO) and the breakout 400G OSFP/QSFP112 SR4 modules. Next, we will focus on the optical module solutions provided by COBTEL.
 
800G QSFP-DD/OSFP SR8/AOC (8x 100G PAM4)

800G QSFP-DD/OSFP SR8/AOC (8x 100G PAM4)

800G QSFP-DD/OSFP SR8/AOC (8x 100G PAM4)

 

 
 
 
 
Product Features:
1.Optical Interface Protocol: IEEE 802.3db 400GBASE-SR4
2. Electrical Interface Protocol: IEEE802.3ck: 800GAUI-8 QSFP DD MSA or
3. OSFP MSA
4. Software Protocol: CMIS-4.0
5. Power Consumption: <13.5 W
6. Mature Chip Solution:
7. Broadcom DSP + Macom Driver/TIA
8. Broadcom VCSEL/PD Solution
9. OM4 100m Pass-through FEC, Pre-FEC BER ~E-7, suitable for 100G PAM4 applications
10. MPO16 APC Connector
 
Product Functional Block Diagram

Product Functional Block Diagram

Product Internal Schematic Diagram

Product Internal Schematic Diagram

800G QSFP-DD SR8 Product Exploded View

800G QSFP-DD SR8 Product Exploded View

 
400G OSFP-RHS(Flat-top) SR4

400G OSFP-RHS(Flat-top) SR4

 
Product Features
1. 4x106.25Gbps PAM4 Transmitter and PAM4 Receiver
2. 4-channel 850nm VCSEL Array
3. 4-channel PIN Photodetector Array
4. Power Consumption <8W
5. Hot-pluggable OSFP Form Factor, CMIS Compatible
6. Maximum Link Length: 60m over OM3 MMF, 100m over OM4 MMF with FEC
7. MPO12 APC Connector
8. Operating Case Temperature: 0°C ~ +70°C
 
Product Functional Block Diagram

Product Functional Block Diagram

400G QSFP112 SR4

400G QSFP112 SR4

 
Product Features:
1. 4-lane Full-Duplex Transceiver Module
2. 4 channels, each at 106.25G
3. 4x106.25Gbps PAM4 Transmitter and PAM4 Receiver
4. 4-channel 850nm VCSEL Array
5. 4-channel PIN Photodetector Array
6. Power Consumption <8W
7. Hot-pluggable QSFP112 Form Factor, CMIS Compliant
8. Maximum Link Length: 60m over OM3 MMF, 100m over OM4 MMF with FEC
9. MPO12 APC Connector
10. Operating Case Temperature: 0°C ~ +70°C
 
Product Functional Block Diagram

Product Functional Block Diagram

Complimentary Fiber Patch Cord Solution: Both the 400G OSFP-RHS(Flat-top) SR4 and 400G QSFP112 SR4 optical modules use MPO12 multi-mode patch cables, OM4, Type B, MPO/APC.

Complimentary Jumper Solution: Both the 400G OSFP-RHS(Flat-top) SR4 and 400G QSFP112 SR4 optical modules use MPO12 multi-mode jumper cables, OM4, Type B, MPO/APC.

Now, let's look at the typical applications for 800G/400G NVIDIA single-mode optical module products, as shown below:

Now, let's look at the typical applications for 800G/400G NVIDIA single-mode optical module products, as shown below:

Here, the involved optical modules are: 800G OSFP DR8/DR8+ (Siph), 400G OSFP-RHS DR4 (Siph), and 400G QSFP112 DR4(Siph). Next, we focus on COBTEL's solutions. For its single-mode 800G/400G products, COBTEL leverages silicon photonics technology.
The core technology of EasyFlyTech's silicon photonics modules lies in its innovative free-space COB high-coupling-efficiency packaging design and MZI (Mach-Zehnder Interferometer) software locking algorithm. For the silicon photonic waveguide core, the company has also collaborated with partners on multiple co-design iterations of the silicon photonic chips.
 
800G OSFP DR8/DR8+ (Siph)

800G OSFP DR8/DR8+ (Siph)

 
Product Features
1. Optical Interface Protocol: IEEE 802.3cu 8X 100GBASE-DR
2. Electrical Interface Protocol: IEEE802.3ck: 800GAUI-8
3. Form Factor: OSFP MSA
4. Software Protocol: CMIS-Rev 5.2
5. Power Consumption: <18.5W
6. Mature Chip Solution:
a. Broadcom DSP + 4X CWL, 2X DR4 SiPh PIC, 2 DR4 TIAs,
b. 2 DR4 PDs
c. COB SiPh Platform
d. DR8 OM4 500m Pass-through FEC, Pre-FEC BER ~E-7, suitable for 100G PAM4 applications
e. MPO16 APC Interface (DR 500M, DR+ 2KM)
 
Product Functional Block Diagram

Product Functional Block Diagram

Product Internal Schematic Diagram

Product Internal Schematic Diagram

400G OSFP-RHS DR4 (Siph)

400G OSFP-RHS DR4 (Siph)

 
Product Features
1. OSFP MSA and CMIS Compatible
2. 4x106.25Gbps (53.125GBd PAM4) Electrical Interface
3. 4x106.25Gbps (53.125GBd PAM4) Optical Interface
4. Power Consumption <10W
5. Maximum Link Length: 500m over G.652 SMF with KP-FEC
6. MPO-12 Connector
7. Built-in Digital Diagnostic Monitoring (DDM)
8. Operating Case Temperature: 0°C ~ +70°C
9. 3.3V Operating Voltage
10. RoHS Compliant (Lead-Free)
 
Product Functional Block Diagram

Product Functional Block Diagram

400G QSFP112 DR4(Siph)

400G QSFP112 DR4(Siph)

 
Product Features
1. Compliant with QSFP112 MSA and CMIS
2. 4x106.25Gbps (53.125GBd PAM4) Electrical Interface
3. 4x106.25Gbps (53.125GBd PAM4) Optical Interface
4. Power Consumption <10W
5. Maximum Link Length: 500m over G.652 SMF with KP-FEC
6. MPO-12 Connector
7. Built-in Digital Diagnostic Monitoring (DDM)
8. Operating Case Temperature: 0°C ~ +70°C
9. 3.3V Operating Voltage
10. RoHS Compliant (Lead-Free)

Product Functional Block Diagram

Complimentary fiber optic patch cords Solution: Both the 400G OSFP-RHS DR4 (Siph) and 400G QSFP112 DR4(Siph) optical modules use MPO12 single-mode patch cables, Type B, MPO/APC.

Complimentary fiber optic patch cords Solution: Both the 400G OSFP-RHS DR4 (Siph) and 400G QSFP112 DR4(Siph) optical modules use MPO12 single-mode patch cables, Type B, MPO/APC.

Beyond the 800G/400G NVIDIA single-mode and multi-mode optical module solutions described above, 800G DAC is also a cost-effective solution for short-distance transmission in AI data centers. Next, we introduce the typical applications for 800G NVIDIA direct-attach and breakout DAC products. The following diagram shows the typical application for the 800G NVIDIA direct-attach DAC Cable:

DAC400G-IBEN-SWITCH-TO- SWITCH OR DGX-H100

 
COBTEL provides solutions for the direct-attach DACs involved here: the 800G OSFP DAC and 800G QSFP-DD DAC.
AI Data Center 400G/800G DAC Overview:

COBTEL provides solutions for the direct-attach DACs involved here: the 800G OSFP DAC and 800G QSFP-DD DAC.

This solution delivers exceptional 44GHz signal integrity. Its 800G testing with KP4-FEC complies with IEEE standards, achieving Post-FEC BER < 1E-15, an FEC margin > 27%, and zero FEC frame loss rate. It uses a Re-Driver solution that offers low power consumption (~2.5W) and latency (<20ns), making it more efficient than Re-Timer solutions. Innovative production techniques ensure high reliability. The 800G QSFP-DD ACC 26AWG 4m cable weighs approximately 600g.

Product Features:
1. Compliant with IEEE P802.3ck D3.0 and QSFP-DD800 & OSFP MSA
2. Compliant with IEEE802.3ck standard
3. Uses 16 pairs of copper cable
4. Supports 8-lane bidirectional transmission at 112GB/s
5. Passive Copper Cable (PCC) supports 2m, with insertion loss better than 19.75dB@26.56GHz
6. 800G Active Copper Cable (ACC) reaches up to 5m
7. Channel Operating Margin (COM) exceeds 3dB under conditions of 8 near-end and 7 far-end crosstalk sources
8. Commercial BER testing and MCB environments show Pre-FEC BER better than 1E-5 (Post-FEC BER better than 1E-15)
9. 800G DAC Channel Insertion Loss.

800G DAC Channel Insertion Loss.

10. 800G DAC Channel COM (Including Crosstalk)

800G DAC Channel COM (Including Crosstalk)

Finally, we briefly introduce the typical application for the 800G NVIDIA breakout DAC product line, as shown below:

the typical application for the 800G NVIDIA breakout DAC product line

COBTEL's 800G breakout DAC solutions include: the 800G OSFP to 2x400G OSFP112 Breakout DAC and the 800G QSFP-DD to 2x400G QSFP112 Breakout DAC.

the 800G OSFP to 2x400G OSFP112 Breakout DAC and the 800G QSFP-DD to 2x400G QSFP112 Breakout DAC

 

 

 

 

 

Comprehensive Guide To COBTEL Optical Module Catalog

 


1. High-Performance Optical Module Solutions for Modern Networks

Our optical module selection provides the speed your business needs. Every optical module we sell meets high industry standards. These parts help your network move data fast. You can find many types of modules on this page. We offer solutions for small offices and giant data centers. A good optical module reduces lag. It keeps your servers happy. Our inventory includes the latest 400G and 100G tech. If you need a reliable link, start here. We use top chips in every unit. This ensures the signal stays clean. High-quality parts mean fewer errors. Your IT team will spend less time fixing links. This saves your company money and time. Our optical module stock is ready for immediate shipping. We help you stay ahead of the competition.

 


2. The Best Optical Module Transceiver for Fast Data

An optical module transceiver is the heart of your data link. It converts electricity into light. It also turns light back into electricity. This optical module transceiver works at both ends of the fiber. We build these to be fast and stable. Our optical transceiver module options support high bandwidth. This is vital for AI and cloud tasks. You get smooth performance for every user. We test every optical module transceiver before it leaves the factory. This guarantees it works in your switch. We support many brands like Cisco and Juniper. This optical transceiver module choice is smart for B2B buyers. You get pro-grade gear at wholesale prices. It makes your network effortless to manage.
 

3. SFP Optical Module Specs for Every Rack

The sfp optical module is a classic choice for many switches. It is small and powerful. We offer a wide range of sfp optical module speeds. You can find 1G, 10G, and 25G options. This sfp optical module fits into any standard SFP port. It is hot-swappable for easy maintenance. You do not need to turn off your gear to change it. This sfp optical module saves space in your server rack. You can pack more ports into one switch. We use high-quality gold plating on every connector. This ensures a perfect electrical link. Our sfp optical module designs focus on low power use. This keeps your utility bills low. It also keeps your rack cool.

 


4.  What are Optical Modules Used For Consumer Electronics?

We also provide optical modules for consumer electronics. These modules work in routers and home storage units. Many modern homes now use fiber links. Our optical modules for consumer electronics bring pro speeds to the home office. They are easy to install. You just plug them in and go. These optical modules for consumer electronics are very durable. They handle daily use without a problem. We use the same high-quality chips as our pro gear. This means your home network stays fast and stable. If you build routers or smart home hubs, these are for you. We offer bulk pricing for large orders. This helps you keep your production costs low.

 


5. Why Use a Fiber Optic Module in 2026?

A fiber optic module is the best way to move data over long distances. Copper cables are slow for long runs. Light moves faster and further. Our fiber optic module options cover 100m to 10km and more. This fiber optic module resists electrical noise. It works well in factories or busy offices. You get a pure signal every time. We offer multimode and single-mode fiber optic module choices. Multimode is great for short data center links. Single-mode is best for long office-to-office links. Our fiber optic module products use less energy than copper. This makes your green goals easy to reach. It is the smart choice for a modern company.

 


6. Advanced Electro-Optical Modules for Pros

Our electro-optical modules use the latest science to move data. These parts manage the shift from electrons to photons. Every electro-optical modules unit we make is highly efficient. This reduces heat in your switch. High heat can kill your electronics. Our electro-optical modules stay cool under pressure. We use premium lasers in every build. This ensures the light signal is strong and clear. These electro-optical modules are the foundation of high-speed internet. We sell them to ISPs and big tech firms. You can trust our expertise in this field. We have years of experience making these parts.

 


7. The Best Fiber Optic SFP Module Choice

If you need a fiber optic sfp module, we have the best stock. This fiber optic sfp module is the industry standard for 10G links. It is small and very reliable. We offer the fiber optic sfp module in many wavelengths. 850nm is popular for short runs. 1310nm is great for longer tasks. Every fiber optic sfp module includes DDM diagnostics. This lets you see the laser power in real time. You can stop problems before they start. This fiber optic sfp module is a favorite for network admins. It makes troubleshooting fast and easy. We offer this fiber optic sfp module in bulk packs for big projects.

 


8. Global Wholesale for Every Fibre Optic SFP Module

We also stock the fibre optic sfp module for our global clients. Whether you spell it fiber or fibre, we have the part you need. This fibre optic sfp module meets all international standards. It works in any global data center. We ship this fibre optic sfp module to customers all over the world. Our logistics team ensures fast delivery to your door. This fibre optic sfp module is identical in quality to our US stock. It uses the same high-end components. You get the same great performance everywhere. Our fibre optic sfp module prices are the most competitive on the market. We help you stay on budget.

We're well-known as one of the leading optical modules manufacturers and suppliers in China. If you're going to wholesale bulk high quality optical modules with competitive price, welcome to get pricelist and quotation from our factory.

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