单根光栅箝制的L-band掺铒光纤放大器模拟  

Simulation of gain clamped L band erbium doped fiber amplifier using single fiber grating

作　　者：强则煊[1] 梅维泉[1] 沈林放[1] 何赛灵[1] 

机构地区：[1]浙江大学现代光学仪器国家重点实验室光及电磁波研究中心光通信联合交叉中心,浙江杭州310027

出　　处：《浙江大学学报（工学版）》2004年第5期525-529,538,共6页Journal of Zhejiang University：Engineering Science

基　　金：国家自然科学基金资助项目(001101027).

摘　　要：针对波分复用系统要求掺铒光纤放大器(EDFA)必须具备增益锁定功能,提出采用单根光纤光栅的方法来箝制L-bandEDFA的增益.基于考虑自发辐射噪声(ASE)的Giles模型,建立了EDFA的全光增益箝制理论模型.系统分析了四种可能的光路结构、泵浦波长、光纤光栅反射波长和反射率、泵浦功率以及掺铒光纤长度等参量对箝制特性的影响.最后给出一组使EDFA在箝制增益的同时保持增益谱平坦的最佳结构和放大器参量.In accordance with the need of gain control in a wavelength division multiplexed system, a gain-clamped L-band erbium doped fiber amplifier (EDFA) using a single fiber Bragg grating (FBG) was proposed. Based on Giles model with amplified spontaneous emission (ASE), numerical simulation for the all-optical gain-clamped EDFA was carried out. The influences of the configuration, the pump wavelength, the Bragg wavelength, the reflectivity, the pump power and the length of erbium doped fiber (EDF) on the gain-clamped characteristics were studied. An optimal L-band gain-clamped EDFA configuration and the amplifier parameters, which can provide a flat-gain band simultaneously, were given.

关 键 词：掺铒光纤放大器 L-BAND 全光增益箝制 光纤光栅 增益 

分 类 号：TN25[电子电信—物理电子学]