Views: 0 Author: Site Editor Publish Time: 2022-11-01 Origin: Site
People's desire for high-speed optical networks has promoted the vigorous development of the entire optical communication industry, including independent research and development and innovative breakthroughs in optoelectronic device technology and many other technologies. At present, most data centers have deployed 100G networks. You have seen many single-rate 100G QSFP28 optical transceiver, such as SR4, LR4, PSM4, CWDM4, ER4, etc. However, this article will introduce the dual-rate 100G QSFP28 LR4 optical transceiver.
It is equipped with a 4 x 25Gb/s LAN WDM DFB TOSA laser emitter and 4 x 25Gb/s PIN ROSA receiver, using NRZ modulation mode, single channel rate of about 25.8Gb/s and 28Gb/s, can support 100G and 112G transmission rates. The dual-rate 100G QSFP28 LR4 optical module is a single-mode optical module with dual LC interface, and the wavelength is 1295.56, 1300.05, 1304.58 and 1309.14nm. The single-mode optical fiber OS2 can transmit up to 10 km.
The optical module converts four 25G electrical inputs into four LAN-WDM optical signals and multiplexes them into a single channel for transmission of 100G optical signals. At the receiving end, the optical module demultiplexes the 100G optical inputs into four LAN-WDM optical signals, and then converts them into four electrical signals.
In addition, it also supports FEC function. This error correction technology can solve the problem that part of the optical signal at the transmitter is disturbed during transmission, leading to misjudgment at the receiver, so as to improve the transmission quality of the signal.
