微波副载波复用多路光纤传输系统光发射机的研究  

Study of Optical Transmitter for Microwave subcarrier multiplexing fiber-optic transmission system

作　　者：张正线[1] 

机构地区：[1]通信工程学院,南京210016

出　　处：《光通信技术》1997年第1期63-67,共5页Optical Communication Technology

基　　金：国家八五科技攻关项目

摘　　要：研制成功了直接调制带宽达2GHz的光发射机．在600MHz～2．8GHz范围内光发射机的输入反射小于－12dB。在使用频段内互调失真与载波比约为－20dB。在微波副载波多路卫星调频电视（0．97－1，47GHz）光纤传输系统中，该光发射机工作稳定，光发射机输出的光信号经40km单模光纤后获得了令人满意的图象质量（载噪比17dB）。This paper demonstrats a direct modulation 2GHz bandwidth optical transmitter.The returm loss of the optical transmitter is less than -12dB between 600MHz and 2.8GHz. The intermodulation distonion to carrier ratio is around -20dB in using frequency band. The optical transmitter operates in stability in the microwave subcarrier multiplexing satellite FM-TV (0.97-1.47GHz)fiber-optic transmission system. The satisfactory vedio quality (carrier to noise ratio 17dB) is obtained after the optical signal transmitting through 40km fiber.

关 键 词：光发射机 副载波复用 直接调制 光纤通信 

分 类 号：TN929.11[电子电信—通信与信息系统]