一种新的光纤拉曼增益系数的测量方法  

A novel measurement of Raman gain coefficients for optical fibers

作　　者：金永兴[1] 刘涛[1] 康娟[1] 金尚忠[1] 刘红林[1] 

机构地区：[1]中国计量学院光电子技术研究所,浙江杭州310018

出　　处：《光通信研究》2008年第4期39-40,66,共3页Study on Optical Communications

基　　金：国家自然科学基金资助项目(60608009);浙江省重大科技项目(20050012)

摘　　要：拉曼增益系数是描述拉曼散射的一个基本参数,通常用小信号增益法来测量,这种方法需要信号光,缺点是整个测试过程较长,易受到抽运光和信号光不稳定性的影响。文章提出一种新的测量方法,即利用光纤的受激拉曼谱和自发辐射谱的解调来获得光纤拉曼增益系数。测量了G.652光纤的增益系数,并与小信号增益法的测量结果进行了比较。The Raman gain coefficient is a basic parameter for describing the Raman scattering. The coefficient is usually measured by small signal gain method, for which signal light is necessary. However, the measurement process is long and the measurement result is apt to be affected by unsteady pump light and signal light. In this paper, we put forward a new measurement, i.e. the Raman gain coefficient of optical fibers is obtained by the demodulation of the stimulated Raman spectrum and the spontaneous emission spectrum. The gain coefficient of the conventional G. 652 Single Mode Fiber （SMF） is measured and the measurement result is compared with that by the small signal gain method.

关 键 词：受激拉曼散射 拉曼放大器 拉曼增益系数 

分 类 号：TN253[电子电信—物理电子学]