Performance analysis of erbium and erbium ytterbium co doped optical amplifiers in single channel telecommunication system

Abstract

In recent years erbium doped fiber has been playing a crucial role in the field of optical transmission system The optical data transmission has encountered various constraints such as high Bit rate fiber non linearity in long haul networks. Despite employment of various dispersion compensation schemes to overcome high bitrate long transmission using Dispersion Compensation Fibers DCF Fiber Bragg Grating FBG phase conjugation method the conventional use of DCF is seen as more robust for various repercussions So the effect of DCF in nonlinear environment has to be studied to ensure the quality in transmission The infliction of nonlinearity through Erbium Doped Fiber Amplifiers EDFA has been noted in this study The major non linearity characteristic of EDFA in a single channel telecommunication system with Large Effective Area Fiber LEAF is discussed with a view to realize the effective noise dominations of EDFA in optical system Two systems have been implemented one of these involves compensation of its dispersion with Dispersion Compensation Fiber DCF while the other is considered as a non compensated system Evaluation of a system with different fiber spans of 80 160 320 400 and 480 Kilo meters and Noise Figure NF has been demonstrated The fundamental theme viz accumulation of NF increases with the increase in distance This is characterized in the results in terms of Quality Factor QF Bit-Error Rate BER and eye height and has been analyzed too Also a study of dispersion compensated system with and without noise figure has been attempted for pointing out the NF character of EDFA Despite DCF playing a significant role in transmitting a longer path the NF of EDFA comes with more severity in DCF with normal transmitting fiber which degrades the system performance newline