EDFA Application Research in WDM Communication Systems

EDFA-WDM Optical Network Analysis

Optical network that apply wavelength division multiplexing (WDM) is currently widely used in existing telecommunications infrastructures and is expected to play a significant role in next generation networks and the future Internet supporting a large variety of services having very different requirements in terms of bandwidth, latency, reliability and other features. The purpose of this paper ...

Comparison of Advance Data Modulation Formats in 4×10Gbps WDM Optical Communication System using YDFA, EDFA and Raman Amplifier

In this paper, comparison of various advance data modulation formats in 4×10Gbps wavelength division multiplexing (WDM) optical communication system using YDFA (ytterbium doped fiber amplifier), EDFA (erbium doped fiber amplifier) and Raman amplifier has been carried out. The advance modulation formats under investigation include NRZ (non return to zero), RZ (return to zero), CSRZ (carrier-supp...

Application of Holograms in WDM Components for Optical Fiber Systems

High-performance optical amplifier for WDM communication systems

Gain equalization of an EDFA is performed by introducing spectrally designed all-fiber filters in the midstage of a dual-stage fiber amplifier. Two types of filters are studied: a cascade of narrow-band Bragg gratings for discrete equalization of a finite number of channels and a wide-band Bragg grating performing equalization over the whole 1539 nm to 1557 nm range. In future work, it is plann...

Gain Flatness and Bit Error Rate Improvements for an EDFA in WDM System

The Gain flatness of EDFA (Eridium Dopedd Fiber Amplifier) plays a important role for WDM optical application. The purpose of this paper is to improve the gain uneveness for each channel in order to equalize the amplitude in a Wavelength Division Multiplexing (WDM) system .By using low pass Chebshev filter, tunning numerical aperature, fiber length and pump power we can improve the gain faltnes...