- Mia
- September 10, 2023
- 8:14 am
Harry Collins
Answered on 8:14 am
For 100G mode with QPSK modulation, the FEC type could be oFEC (OpenROADM) or SDFEC (Soft Decision FEC) with probabilistic constellation shaping.
For 200G mode with QPSK modulation, the FEC type could be SDFEC with probabilistic constellation shaping.
For 400G mode with 16-QAM modulation, the FEC type could be SDFEC with probabilistic constellation shaping.
The 400G-BIDI module can work in different ways depending on the switch and the application. It can use different types of FEC (Forward Error Correction) to improve the signal quality. FEC is a method of adding extra bits to the data to detect and correct errors.
One way is to use the 400G-SR4.2 or 4x 100G-SR1.2 mode, where the switch does the FEC and the module does not. The FEC used here is called KP-FEC, which is a type of Reed-Solomon FEC.
Another way is to use the 4x 100G-BIDI (100G-SRBD) mode, where the module does the FEC and the switch does not. The module uses a different FEC for each pair of fibers, which can work with the existing 100G-BIDI modules. This way, you can keep using your old 100G-BIDI modules with the new 400G-BIDI modules.
People Also Ask
The Critical Role of Ethernet in AI Networks
The rapid advancement of artificial intelligence (AI) technology is revolutionizing the cloud computing and IT industries. Since the launch of Chat GPT in November 2022, the AI field has experienced an investment boom, attracting significant attention. Major cloud service providers have introduced new products and services to meet the growing
Ultimate Guide to Choosing a 5-Port Gigabit Ethernet Unmanaged Switch for Your Home Network
In this digital age, building a robust and efficient home network is more essential than ever, and buying a five-port network switch can serve as one network with seamless connectivity. A single 5-port Gigabit Ethernet unmanaged switch could be used to bolster the coverage and ability of your network with
The Ultimate Guide to Choosing a 2.5Gbe Switch for Your Network Needs
Selecting the right equipment is crucial for network optimization and performance, mainly due to the increasing demand for data transmission and evolved connectivity. Now, there are many types of buildings of various sizes, and as a result, a 2.5Gbe switch is required in modern networks because it connects the legacy
FiberMall’s OSFP Packaged Copper Cable DAC
Last year, not only were optical modules in high demand but DAC (Direct Attach Copper) and AEC (Active Electrical Cables) were also highly sought after. NVIDIA extensively used DACs, essentially referring to direct connection copper cables. These are dual-core copper cables, which may or may not include signal return GND
Related Articles
800G SR8 and 400G SR4 Optical Transceiver Modules Compatibility and Interconnection Test Report
Version Change Log Writer V0 Sample Test Cassie Test Purpose Test Objects：800G OSFP SR8/400G OSFP SR4/400G Q112 SR4. By conducting corresponding tests, the test parameters meet the relevant industry standards, and the test modules can be normally used for Nvidia (Mellanox) MQM9790 switch, Nvidia (Mellanox) ConnectX-7 network card and Nvidia (Mellanox) BlueField-3, laying a foundation for
NVIDIA CEO Jensen Huang has Unveiled the World’s Smallest AI Supercomputer
At the recent CES conference, Jensen Huang, dressed in a new jacket, announced the official release of the RTX 5090. Here are the prices for the 50 series GPUs. RTX 5090: $1999 / RTX 5090 D: 16,499 RMB RTX 5080: $999 / 8,299 RMB RTX 5070 Ti: $749 RTX 5070:
NVIDIA GB300
Although Nvidia is facing multiple pressures near the end of the year, according to supply chain sources, Nvidia still plans to release its next-generation GB300 AI server platform at the GTC conference to be held from March 17 to 20, 2025. The platform has undergone a series of new upgrades,
The Critical Role of Ethernet in AI Networks
The rapid advancement of artificial intelligence (AI) technology is revolutionizing the cloud computing and IT industries. Since the launch of Chat GPT in November 2022, the AI field has experienced an investment boom, attracting significant attention. Major cloud service providers have introduced new products and services to meet the growing
Ultimate Guide to Choosing a 5-Port Gigabit Ethernet Unmanaged Switch for Your Home Network
In this digital age, building a robust and efficient home network is more essential than ever, and buying a five-port network switch can serve as one network with seamless connectivity. A single 5-port Gigabit Ethernet unmanaged switch could be used to bolster the coverage and ability of your network with
The Ultimate Guide to Choosing a 2.5Gbe Switch for Your Network Needs
Selecting the right equipment is crucial for network optimization and performance, mainly due to the increasing demand for data transmission and evolved connectivity. Now, there are many types of buildings of various sizes, and as a result, a 2.5Gbe switch is required in modern networks because it connects the legacy
FiberMall’s OSFP Packaged Copper Cable DAC
Last year, not only were optical modules in high demand but DAC (Direct Attach Copper) and AEC (Active Electrical Cables) were also highly sought after. NVIDIA extensively used DACs, essentially referring to direct connection copper cables. These are dual-core copper cables, which may or may not include signal return GND