Non-linear effects of high rate soliton transmission on DWDM optical fiber communication system

摘要

The bit error rate (BER) decreasing of soliton transmission in dense wavelength division multiplexing (DWDM) system because of non-linear effects is investigated. Non-linear effects in DWDM are brought on by the Quadratic Electro-Optic effects (Kerr Effects) and inelastic scattering. The Kerr effects included self-phase modulation, four wave mixing, and cross phase modulation. Kerr effects can cause problems in the limited number of channels and bandwidth. In this paper, we analyzed the impact of Kerr-effect on 10 Gbps soliton transmission DWDM systems which found that the value of refractive index of non-linear (n2) influences on reducing the number of input channel. The results show that soliton can increase quality of performance with Q factor more than 6. Several research with same bitrate using a length of 100 km, this paper analyzed longer distances have doubled, which is 200 km. Transmit power has a lower power value of about 35%, it is very important for issue of energy savings. In addition, the number of channels increasing up to 80 channels.