方波频率调制的光纤视频传输  

Fiber Video Frequency Transmission by Square-wave Frequency Modulation

作　　者：吴秀[1] 

机构地区：[1]南京邮电学院光通信研究所

出　　处：《光通信技术》1989年第4期9-14,共6页Optical Communication Technology

摘　　要：本文详细地研究了方波频率调制(SWFM)传输系统的性能。导出了用于SWFM视频传输系统信噪比(SNR)的简单计算公式。对SWFM系统的SNR性能进行了理论分析。在1.3和0.8μm波长处用SWFM进行了视频双伴音传输实验。讨论了光纤传输特性对SNR性能的影响。该系统的主要技术指标已达到美国GVG公司3291机的水平,而价格约为该机的三分之一。其性能价格比已具有竟争力,可以大量推广应用。The performance of a fiber-optic transmission system mo- dulated by square-wave FM is researched in detail. A simple fomula for calculation of signal-to-noise ratio (SNR) is deduced and the theoretical analysis of the SNR properties is given. After carrying out simultaneous video transmisson experiments at 1.3μm and 0.8μm, we disussed the inf- luence of fiber transmission charter on SNR. The system has reached the the level of Model'3291' which is made by U.S GVG Corp.in mainpe rf- ormance indexes with one third of the price. The system may be spreaded according to its competitive cost performance.

关 键 词：方波频率调制 视频传输 信噪比 

分 类 号：TN941.2[电子电信—信号与信息处理]