HYBRID OPTICAL AMPLIFIER FOR DENSE WAVELENGTH DIVISION MULTIPLEXED SYSTEM

Abstract

- The fibre system are the important part of modern days communication network. The high rate given by fibre optics can truly be used by employment of WDM techniques. The WDM system is able to cater all value added services (VAS). WDM system long widely accepted in large distant lines suffers from problem such as dispersion and attenuation which results low performance. Dispersion compensation and optical power improvement are necessary parameter in WDM. In the previous work a single FBG is used for compensate the dispersion in single channel and 16 cascaded FBG for 16 channel optical system. In my work EDFA system used to improve power and reduce dispersion and regain higher SNR as compared to single EDFA of some source power. It is also imperative that by placement of stager of EDFA pre and post FBG give instruction for an order to magnitude improvement is SNR and receive excellent dispersion compensation in WDM system .