多波长泵浦宽带拉曼放大器功率增益的Gauss近似研究  

Investigating the gain of multi-pumping broadband Raman amplifier by Gaussian approximation

作　　者：王智[1] 魏道平[1] 简水生[1] 

机构地区：[1]北方交通大学光波所,北京100044

出　　处：《激光杂志》2001年第4期15-17,共3页Laser Journal

基　　金：北方交通大学论文基金资助PD0 89;北方交通大学攀登计划资助

摘　　要：受激拉曼散射 (SRS)的Stokes波谱线型比较复杂 ,本文采用Gauss线型近似 ,研究了多波长泵浦宽带Raman放大器的增益特性 ,并提出了宽带增益平坦的多波长泵浦方案 ,研究结果表明增益平坦程度与泵浦波的频率间隔密切相关。对ITU -T的G .65 2、G .65 3、G .65 5光纤和新型的大有效面积非零色散平坦光纤的Raman放大增益特性分别进行了研究 ,结果表明Raman增益与光纤的种类和光纤传输特性有关 ,特别是随光纤有效纤芯面积的增大而明显减小。The Stokes spectrum in the Stimulated Raman Scattering(SRS) is very complicate.In this article,we use Gaussian approxi mation to investigate the gain properties of multi-pumping broadband Raman amplifier,and present some schemes for flattening the gain.All the results show that the flatness of the gain spectrum is closely related to the pumping frequency grid.Researching the gain properties of Raman amplifiers of such ITU-T fibers as G.652.G.653.G.655 and large effective area non-zero dispersion flattening fiber,we got that the Raman gain is associated with the fiber type and its transmission characteristics,especially decreasing with the effective core area increasing.

关 键 词：受激拉曼散射 多波长泵浦 宽带拉曼放大器 光纤通信 Gauss近似 

分 类 号：TN72[电子电信—电路与系统]