光前放接收机的噪声与灵敏度(Ⅰ):理论  

Noise and Sensitivity of Optically Pre-amplified Receiver(Ⅰ):Theory

作　　者：杨淑雯[1] 姚建国[1] N.Walker G.Walker R.Steel 

机构地区：[1]深圳大学新技术研究中心 [2]英国电信研究实验室

出　　处：《深圳大学学报（理工版）》1993年第1期1-8,共8页Journal of Shenzhen University(Science and Engineering)

基　　金：国家自然科学基金

摘　　要：光前置放大器在强度调制——直接检测(IMDD)系统中的应用,使常规的IMDD系统灵敏度接近了同类外差接收机的指标,而在系统可靠性、稳定性和成本等方面则优于外差接收系统。本文从理论上分析了IMDD系统光前放接收机的噪声和灵敏度特性,给出了具体计算公式。这些计算公式均以系统元部件可测参数来表示,因此对实际的系统设计和性能评价有重大实用价值。The application of optically pre-amplified receiver in conventional Intensive Modulation-Direct Detection (IMDD) systems makes its sensitivity close to the sensitivity of heterodyne detection systems. The noise and sensitivity in conventional IMDD systems with optically pre-amplified receivers are analyzed theoretically. Formulas based on the directly measurable parameters of the system are proposed, which can be applied to system design and evaluation.

关 键 词：光前放接收机 噪声 灵敏度 

分 类 号：TN911.25[电子电信—通信与信息系统]