With the rapid development of information technology, the demand for network data transmission is constantly increasing. In order to meet the growing bandwidth demand, optical module technology is also constantly innovating and improving. As one of the most advanced optical communication devices, the 800G optical module will become an important component of future network connections due to its high speed, stability, and reliability.
What is an 800G optical module?
The 800G optical module can be regarded as the next generation of optical module technology, capable of transmitting data at ultra-high speeds. The current mainstream packaging options are 800G OSFP (Octal Small Form factor Pluggable) and 800G QSFP-DD (Quad Small Form factor Pluggable Double Density). Both QSFP-DD and OSFP can support 800G, with the main difference being the slightly larger size and higher power consumption of OSFP. QSFP-DD is perfectly compatible with QSFP28 and QSFP+, while OSFP is not compatible.
At present, the main 800G optical modules on the market are: 800G SR8, 800G DR8, and 800G DR8+. The 800G optical module supports standards such as IEE802.3cK and QSFP-DD 800 MSA, as well as the CMIS4.0 interface protocol. Built in digital diagnostic function to meet EMI ESD。
800G SR8: Using 100G PAM4 and VCSEL technology for 8-channel optical signal transmission, EML design and silicon optical material with a wavelength of 850nm, single channel speed of 100Gbps, requiring 16 optical fibers. This can be seen as an upgraded version of the 400G SR4, doubling the number of channels. Its optical interface is MPO-16 or 2-row MPO-12. 800GSR8 is packaged as OSFP, with a wavelength of 850nm, power consumption<16W, and a transmission distance of 500m.
800G DR8: including 8 Tx and 8 Rx, with a single channel speed of 100Gbps, requiring 16 fibers, The optical interface of DR8 is MPO-16.
The 800G DR8 is packaged as QSFP-DD, with a wavelength of 1310nm, power consumption<16W, and a transmission distance of 2km.
