Analysis of Repeaters in Fiber Optic Communication

An Optical Repeater is used in a fiber optic communications system to regenerate the input optical signal and they are used to transmit a long distance by overcoming loss due to the attenuation of the optical fiber. Repeaters are used to boost incoming signals in the fiber. Optical Spectrum at different links in a fiber optic link is being observed. For some conditions, the output spectrum of an EDFA/OA would be distorted this has to be analyzed for various settings of OA so that optimum transmitted power, optimum repeater spacing, and optimum individual repeaters parameters are to be found out which will make the WDM spectrum with uniform gain for all wavelengths. The main objective is to increase the spacing between the repeaters and hence reduce the number of repeaters and find the optimum transmitting power and reduce the non-linearities such as Four Wave Mixing, Self-Phase Modulation, and Cross-Phase Modulation