400G Network Solutions
For B100G optical transmission, the contradiction between transmission distance and spectral efficiency is very significant due to the non-linear effect. Choosing a higher level of QAM modulation can improve the spectral efficiency and transmission rate. The transmission distance may be much lower than that of the current 100G system. At present, IEEE has confirmed that 400GE will be the next generation router’s optical transmission interface. In order to support long-distance transmission of 400GE service, FiberHome provides two solutions for long-distance backbone transmission and metro applications respectively.
Solution Introduction & Advantages
The four subcarriers based on 100G PM-QPSK modulation are constructed by OFDM technology to implement a 400G superchannel with a channel bandwidth of 150GHz. The scheme has a transmission capacity of 12.8T at C band and the same transmission distance with coherent 100G PM-QPSK Modulation scheme, which can reach 3000km;
Two subcarriers based on 200G PM-16QAM modulation are constructed by OFDM technology to form a 400G super channel with a channel bandwidth of 75GHz. The transmission capacity of the scheme is 25.6T and the transmission distance is 500km~600km;
Single carrier based on 400G PM-64QAM modulation is constructed by high-order modulation technology to form a 400G super channel with a channel bandwidth of 50GHz. The transmission capacity of the scheme is 38.4T and the transmission distance is 200km, which is quite suitable for short-distance high-speed transmission scenarios..