| 微波SCM光纤传输系统中接收机前端的研制 |
| |
| 引用本文： | 谭志飞,张栋梁.微波SCM光纤传输系统中接收机前端的研制[J].东南大学学报(自然科学版),1995(3). |
| |
| 作者姓名： | 谭志飞 张栋梁 |
| |
| 作者单位： | 东南大学电子工程系 |
| |
| 摘 要： | 理论分析并计算了微波副载波复用（ＳＣＭ）光纤传输系统的光接收机前端的接收灵敏度和噪声特性，证明了采用谐振电感的方法可使先接收机达到接近于由ＰＩＮ的量子散粒噪声所限制的极限灵敏度；对于串联谐振型接收机前端，不仅能提高高频段的信噪比，同时又不牺牲低频段的信噪比。初步研制出了低噪声宽带接收机前端，经实测获得了与理论分析基本一致的实验结果。
|
| 关 键 词： | 微波 谐振电路 功率谱密度／光接收机前端 热噪声 散粒噪声 |
The Research of Optical Receiver Front-End for Microwave Subcarrier Multiplexing Fiber-Optic Transmission System |
| |
| an Zhifei,Zhang Dongliang.The Research of Optical Receiver Front-End for Microwave Subcarrier Multiplexing Fiber-Optic Transmission System[J].Journal of Southeast University(Natural Science Edition),1995(3). |
| |
| Authors: | an Zhifei Zhang Dongliang |
| |
| Abstract: | The sensitivity and noise property of the receiver front-end for microwave subcarrier multi-plexing fiber-optic transmission system are theoretically analysed and computed, and it is proved thatleaving shot noise as the main limitation of sensitivity can be obtained by the resonant inductor. In seri-al resonant receiver front-end not only the signal-to-noise ratio at high frequency arca can be rised ,butalso that one at low frequency area can not be decreased. A low noise and wide band optical receiverfro nt-end is desisned, and the measurement results are in agreement with that of theory. |
| |
| Keywords: | microwave resonant circuits power spectrum density / optical receiver front-end ther-mal noise shot noise |
| 本文献已被 CNKI 等数据库收录！ |
