FWM Crosstalk Reduction in 32-Channel DWDM Optical Network using Unequal Channel Allocation and Chirped FBG

Abstract

In this paper, Chirped Fiber Bragg Grating (FBG) and unequal channel allocation have been implemented to reduce the Four Wave Mixing (FWM) crosstalk in Dense Wavelength Division Multiplexing (DWDM) optical system, which is considered as a mainstream solution for 5G transmission systems in smart cities due to the intense bandwidth demand. The proposed technique has been examined using several design parameters that affect FWM nonlinear crosstalk, such as total transmission distance, channel frequency spacing, the number of WDM channels and the input power per channel. The suggested technique has further been compared with a previous model proposed by other author to prove the effectiveness of this work. The simulation results have been investigated and validated by analyzing the optical spectrum analyzer and the power of the highest FWM spectral products. Simulation results demonstrate the reliability and the efficiency of the developed method.