Gu Jun, Guan Jianfei, Li Weiliang, et al. Simulation of transmission performances of wavelength shift-based single-fiber bidirectional systems[J]. 2015,(5):15-18.
This paper sets up a simulation model by using the Optisystem for a DQPSK modulation-based single-fiber bidirectional WDM transmission system for performing system capacity expansion
inhibiting the effects of dispersion on the system by step dispersion compensation and reducing the FWM effects by non-uniform channel interval setting and non-uniform dispersion management.The results indicate that when the transmission distance of an 8-channel 40Gbit/s WDM transmission system is 600 km
the Qfactor of a single-fiber bidirectional transmission is improved by 14.9dB to the maximum compared with a single-fiber unidirectional transmission system.Furthermore