中文

Journal of Shanghai University（Natural Science Edition） ›› 2006, Vol. 12 ›› Issue (2): 120-124 .

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All-Optical Gain-Clamped EDFA with High Gain and Low Noise Factor

SONG Ying-xiong,LI Ying-chun,CHEN Jian,LIN Ru-jian   

  1. School of Communication and Information Engineering, Shanghai University, Shanghai 200072, China

  • Received:2005-09-01 Revised:1900-01-01 Online:1900-01-01 Published:1900-01-01
  • Contact: SONG Ying-xiong

Cited

7

Abstract:

A novel alloptical EDFA with flat and clamped gain is presented. By using a 2-stage amplifier and adding fiber grating and a gain-flattening filter at the output port, high gain and low noise factor are obtained. Flatness and clamping gain in the C band and the cost is also considered. Simulation results show that this configuration has a good gain-clamping characteristic. When some wavelengths are added or dropped, the gain of remaining channels keeps constant.

Key words: EDFA, gain-flatness, gain-clamping