入射光偏振态对AM-CATV外调制发射机CTB补偿特性的影响  

Influence of the incident polarization on CTB compensation performance of CATV optical transmitter

作　　者：郭照南[1] 

机构地区：[1]湖南工程学院电气工程系,湖南湘潭411101

出　　处：《电视技术》2002年第4期41-43,共3页Video Engineering

摘　　要：研究了入射偏振态模式及其变化对光纤AM-CATV外调制发射机CTB补偿特性的的影响。分析计算显示:入射光偏振态模式为TE模时系统CTB补偿特性最佳;为保证发射机的CTB性能,入射光偏离TE模的角度应小于15°。In this paper,influence of the incident polarization state with TE mode and TM mode on the CTB performance in optical fiber AM-CATV externally modulated transmitters is analyzed with caculation and ex-periment.The theoretical analysis and calculation has shown that the TE mode is the best mode for performance of CTB suppression.The influence of the incident polarization state drifting off TE mode is also analyzed and measured,and it is shown that the deviation angle from the TE mode should be less than15degree so as to the performance for CTB suppression will not be degraded.[

关 键 词：入射光偏振态 AM-CATV 外调制发射机 CTB补偿特性 有线电视 电高发射机 

分 类 号：TN943.6[电子电信—信号与信息处理] TN948.53[电子电信—信息与通信工程]