DocumentCode :
850581
Title :
A simple algorithm for gain spectrum adjustment of backward-pumped distributed fiber Raman amplifiers
Author :
Zhang, Wei ; Feng, Xue ; Peng, Jiangde ; Liu, Xiaoming
Author_Institution :
Electron. Eng. Dept., Tsinghua Univ., Beijing, China
Volume :
16
Issue :
1
fYear :
2004
Firstpage :
69
Lastpage :
71
Abstract :
In this letter, a simple algorithm for the gain spectrum adjustment of backward-pumped distributed fiber Raman amplifier (B-DFRA) is demonstrated both theoretically and experimentally. It is shown that the change in pump power and corresponding change in gain spectrum are approximately related through a linear matrix, while the elements of the matrix can be easily measured. Feasibility of this algorithm is approved by experiment: a gain ripple of less than 1.2 dB across the C + L band is achieved during net gain adjustment from -15 dB to -9 dB of a 160-channel B-DFRA by varying the launched power of four pumping LDs.
Keywords :
Raman lasers; optical communication equipment; optical fibre amplifiers; optical pumping; backward-pumped distributed fiber Raman amplifiers; gain ripple; gain spectrum; gain spectrum adjustment; launched power; linear matrix; net gain adjustment; pump power; pumping LDs; Distributed amplifiers; Gain measurement; Optical fiber amplifiers; Optical fiber communication; Optical fiber theory; Optical noise; Power measurement; Semiconductor optical amplifiers; Stimulated emission; Vectors;
fLanguage :
English
Journal_Title :
Photonics Technology Letters, IEEE
Publisher :
ieee
ISSN :
1041-1135
Type :
jour
DOI :
10.1109/LPT.2003.818915
Filename :
1255954
Link To Document :
بازگشت