调相法抑制光纤CATV中受激布里渊散射的实验研究  

Experimental Study of Phase Modulation for SBS Suppression in Optical Fiber CATV System

作　　者：杨建良[1] 郭照南 查开德[3] 

机构地区：[1]湘潭大学电子工程系,湘潭411105 [2]湘潭机电专科学校,湘潭411101 [3]清华大学电子工程系,北京100084

出　　处：《中国激光》2001年第5期439-442,共4页Chinese Journal of Lasers

基　　金：博士后科研基金;华为科技基金资助项目

摘　　要：对光纤AM CATV外调制传输系统中附加相位调制法抑制受激布里渊散射 (SBS)进行了详细的实验研究 ,结果显示SBS抑制效果与调相源个数及相位调制深度有关 ,与调相源频率无关 ;单个调相源可将SBS阈值提高到13dBm以上 ,而两个调相源可将系统SBS阈值提高到 18dBm以上 ;A detail experimental study of phase modulation for Stimulated Brillouin Scattering (SBS) suppression in optical fiber AM-CATV externally modulated transmitter is presented. The experimental data show that the improvement of SBS threshold is dependent on the number of SBS suppression source and the phase modulation index, and independent of the frequency of SBS suppression signal. The experiments also show that single signal phase modulation can improve the SBS threshold to 13 dBm and two signal phase modulation can improve the SBS threshold to 18 dBm or above. It is also demonstrated that the phase modulation has no influence on the nonlinearity in optical fiber AM-CATV externally modulated transmission system.

关 键 词：受激布里渊散射 相位调制法 光纤 有线电视网 

分 类 号：TN943.6[电子电信—信号与信息处理] O437.2[电子电信—信息与通信工程]