Analyzing the FWM at Different Power Levels in the Fiber Optic DWDM System

To improve the capacity of an optical fiber communication system, the dense wavelength division multiplexing (DWDM) is used. “Dense” means it can bring the wavelength closer together than the wavelength division multiplexing system used before. DWDM's function is to combine and transmit the various signals simultaneously on the same fiber at different wavelengths. Within DWDM, the nonlinear effects are caused by the data rate increase, and the channel spacing decrease. FWM is the nonlinearity that affects the transmitted signal and the overall system performance. In this paper, the four wave mixing on the efficiency of DWDM-based optical fiber communication is examined at different power rates. This paper was designed to simulate the 16-channel dense multiplexing wavelength division (DWDM) method using the simulation software OptiSystem7.0. At the receiver side, the variations in the optical spectrum analyzer, BER, and the Quality factor are examined.