摘要
介绍了单纤双向传输系统的工作原理,分析了限制单纤双向传输系统应用的技术因素。通过理论计算以及搭建试验系统,探讨了基于SDH传输制式的同波长单纤双向传输系统在不同传输速率下的极限传输距离。通过对不同传输系统进行模拟仿真,对比了同波长单纤双向和双纤单向传输系统的接收灵敏度,进而得出单纤双向传输系统中后向瑞利散射引起的功率代价。研究结果表明,在未采用FEC技术时SDH同波长单纤双向传输系统在STM-1/4/16/64传输速率下的极限传输距离分别约为110 km、80 km、50 km和20 km。
The characteristics and application system is introduced in this paper. The constraints of bidirectional transmission maximum transmission distances of single-wavelength bidirectional SDH-based transmission system with different transmission rates are studied through theoretical analysis and experiment. The receiver sensitivities of single-wavelength bidirectional and unidirectional transmission systems are obtained by simulation and the corresponding power penalty induced by Rayleigh backscattering is calculated. The results show that the maximum transmission distances of single-wavelength bidirectional SDH STM-1/4/16/64 transmission system without FEC are approximately 110 km, 80 km, 50 km and 20 km, respectively.
出处
《内蒙古电力技术》
2017年第4期5-9,共5页
Inner Mongolia Electric Power
关键词
光纤通信
同步数字体系
单纤双向传输
optical fiber communication
synchronous digital hierarchy
bidirectional transmission
