The analysis presented in this thesis revolves around optical network where signals are routed from the source to the destination using devices known as Reconfigurable Optical Add-Drop Multiplexers (ROADMs). These devices act as both multiplexers and demultiplexers, capable of selecting specific wavelengths and route it to a local RX (Drop) or to choose new traffic to route from a TX (Add) eliminating the need for conversion to and from electrical domain. The core component of the ROADM is the Wavelength Selective Switches (WSS), which acts as filters, ultimately affecting signal quality at the edges of the Frequency Bandwidth. Furthermore, as optical neworks become bigger and bigger, a large number of ROADMs could be required to route the signal properly.