With the rapid advancement of optical communication technology, 5G is gradually becoming widespread, and the concept of a “computing power network” is gaining significant traction. The core purpose of this network is to provide users with computing power resources, integrating these resources into the communication network to offer users a more comprehensive computing service. Optical modules, as the solid foundation of computing power network development, have immense market potential.
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ToggleWhat is a 400G Optical Module?
The transmission rate of a 400G optical module is 400Gbps. Its primary function is to convert electrical signals to optical signals at the transmitting end and then transmit them via optical fiber, with the optical signals being converted back to electrical signals at the receiving end. The 400G optical module plays a crucial role in building and influencing 400G network systems.
Application Scenarios of 400G Optical Modules
As a vital product in the field of optical communication transmission, optical modules are widely used in high-performance data centers, communication networks, large-scale computing, and cloud computing. In the data center field, 400G optical modules can meet the demands for high bandwidth, low latency, and high reliability required for the development of cloud computing and big data. They are also suitable for long-distance and high-speed transmission scenarios.
Walsun 400G Optical Modules
400G QSFP-DD FR4 CWDM 2km:
The 400G QSFP-DD FR4 CWDM 2km is a full-duplex optical module with a QSFP-DD hot-pluggable form factor, compliant with QSFP-DD MSA and IEEE 802.3cu 400GBASE-FR4 Ethernet standards. This module uses dual LC optical ports and can transmit over single-mode fiber (SMF) up to a distance of 2km, with a maximum power consumption of less than 10W.
Additionally, this module uses four CWDM wavelengths with non-cooled EML lasers, achieving a single-fiber 400G transmission rate through DEMUX/MUX. The module converts eight 53.125Gb/s electrical signals into four 106.25Gb/s optical signals, which are then multiplexed into a single stream for 425Gb/s optical transmission. Similarly, it demultiplexes a 425Gb/s input optical signal into four channels and converts them back to eight-channel electrical output at the receiving end.
This module serves as a long-distance transmission solution within the 400G QSFP-DD optical module series and is widely used in 400G Ethernet, data centers, and cloud computing scenarios.
Advantages of the 400G QSFP-DD FR4 CWDM 2km Optical Module:
- High-Speed Transmission: Utilizing four CWDM wavelengths with non-cooled EML lasers, it achieves a single-fiber 400G transmission rate over distances up to 2km.
- Hot-Pluggable: Compliant with QSFP-DD MSA and IEEE 802.3cu 400GBASE-FR4 Ethernet standards, featuring a hot-pluggable QSFP-DD form factor.
- Efficient and Low Power Consumption: The module has a maximum power consumption of less than 10W, providing low energy consumption.
- Compact Size: The QSFP-DD form factor offers the advantage of a small footprint.
In addition, the 400G QSFP-DD FR4 CWDM 2km optical module, with its full-duplex transceiver capabilities, is mainly applied in 400G Ethernet, data centers, and cloud computing scenarios.
400G QSFP-DD DR4 1310nm 500m:
The 400G QSFP-DD DR4 1310nm 500m is a 400Gb/s optical module based on the QSFP-DD MSA architecture, utilizing a 1310nm wavelength for transmission over distances up to 500m. It supports four channels, with each channel transmitting at 100G, achieving a total transmission rate of 400G. This module employs advanced modulation technology, providing longer transmission distances and higher bandwidth, meeting the high-performance transmission requirements of large data centers and extensive networks.
This optical module can be used to build high-speed, long-distance data transmission systems, such as those in data centers, cloud computing networks, and large enterprise networks. It features high integration, a compact size, low power consumption, and high performance, offering better network performance and reliability.
Advantages of the 400G QSFP-DD DR4 1310nm 500m Optical Module:
High Transmission Rate: The module features a four-channel full-duplex transceiver design, with a rate of up to 425Gbps, compliant with QSFP-DD MSA and IEEE 802.3bs 400GBASE-LR8 Ethernet standards.
Long Transmission Distance: With an MPO interface, operating at a wavelength of 1310nm, and a maximum power consumption of 12W, the module complies with RoHS standards. It can transmit up to 500m over single-mode fiber (SMF), suitable for short-range 400G and 200G/100G optical interconnects.
Silicon Photonics Technology: The 400G QSFP-DD DR4 silicon photonic module uses silicon photonic chips, effectively controlling costs and power consumption while achieving ultra-large capacity data exchange.
Low Power Consumption: One of the key advantages of the 400G DR4 QSFP-DD optical module in data center applications is its lower power consumption and superior thermal performance compared to other 400G optical modules.
In summary, the 400G QSFP-DD DR4 1310nm 500m optical module offers high transmission rates, long transmission distances, silicon photonics technology, and low power consumption, making it suitable for data center applications.
400G QSFP-DD SR8 Transceiver for Ethernet 850nm 100m:
The 400G QSFP-DD SR8 Transceiver for Ethernet 850nm 100m optical module has the following characteristics:
- Hot-Pluggable QSFP-DD Form Factor: This allows for easier installation and replacement.
- High Data Rate: Achieving a rate of 425Gbps (8xPAM4 53Gbps), it meets the demands for high-bandwidth data transmission.
- DSP and PAM4 Technology: These provide more stable signal quality and longer transmission distances.
- Single +3.3V Power Supply: Simplifies power management.
- I2C Interface: Integrated digital diagnostics monitoring for better system monitoring and management.
- Operating Temperature Range: With a working temperature range of 0-70°C, it can adapt to significant temperature changes.
- Ultra-Low Power Consumption: Power consumption is less than 8.5W, reducing energy consumption.
- Parallel Channel 850nm VCSEL Laser and PIN Photodetector MPO16 Optical Interface: Ensures more stable optical signal transmission and reception.
- OM3 Transmission Distance of 70m, OM4 Transmission Distance of 100m: Meets various transmission distance requirements.
The 400G QSFP-DD SR8 Transceiver for Ethernet 850nm 100m is a high-performance, low-power optical module designed for 400GBASE-SR8 Ethernet applications.
As the demand from telecom operators, enterprise networks, and data centers continues to increase, the 400G optical module market is also expanding. In the future, Walsun will continue to align with market development needs, providing high-quality products and contributing to innovation and advancement in the optical communication industry.



