Study, simulation and estimation of losses of a DWDM point-to-point topology network using OTDR

Abstract

The aim of this project is to study the effect of the input power and the two different compensation techniques DCF and FBG on the performance of an eight channel Dense Wavelength Division Multiplexing (DWDM) line topology designed at wavelength 1550 nm, at three transmission speeds: 30, 60 and 90 Gbps. OptiSystem v.7.0 is used for building the overall system and carrying out simulations. The performance of the system is reported on the basis of eye diagram, Q-factor and Bit Error Rate (BER). The efficiencies of the two compensation methods, at high and low bit rates and input powers, are compared and presented in our final result discussion. In addition, a practical study have been done on the system by measuring the optical losses of the link using an optical time domain reflectometer (OTDR) at both 1310 and 1550 nm wavelengths to ensure its reliability and readiness to function well.