摘要
针对长跨距密集波分复用系统中喇曼放大入纤泵浦功率过大的问题,将遥泵放大器(RPEDFA)引入到系统中,通过对共纤RPEDFA的噪音性能及其优化设计的研究,在理论上计算比较了RPEDFA系统和后向喇曼放大系统在不同泵浦功率水平下的光信噪比和非线性相移,表明遥泵放大技术有效降低了入纤泵浦的功率水平,更适合长跨距应用.运用遥泵放大技术,对一个典型的长跨距系统进行系统Q值的模拟,结果表明:在220mW泵浦功率水平下可以实现跨距为167km的40×11.6Gbit/s系统1000km传输,Q值裕量4.4dB.
To overcome the high pump power of Raman amplification the remotely pumped erbium doped fiber amplifiers （RP-EDFA） are introduced in ultra-long haul dense wavelength division multiplexing （DWDM） systems. Firstly, the noise performance of a simple co-fiber RP-EDFA is investigated experimentally and theoretically, then the design method is discussed. The OSNRs and nonlinear phase shifts of typical systems based on RP-EDFA and backward pumped Raman amplification are compared theoretically,showing that RP-EDFA can efficiently reduce pump power and is appropriate for the ultra-long span application. Finally, Q value of the typical transmission system is simulated. The results show that using RP-EDFA pumped by only 220 mW, 1000 km transmission of a 40 × 11.6Gbit/s system with a span distance of 167 km can be achieved, with 4.4 dB margin of Q value.
出处
《光子学报》
EI
CAS
CSCD
北大核心
2006年第9期1358-1362,共5页
Acta Photonica Sinica
关键词
遥泵放大
长跨距传输
中继系统
波分复用系统
Remotely pumped erbium doped fiber amplifiers
Ultra-long span
Dense wavelength division multiplexing system
作者简介
Tel ：010- 62772042 Email：zhang-f02@mails.tsinghua.edu.cn Zhang Fan was born in 1980, China. He received the B. S. degree from Northwestern Polytechnical University,Xi’an,China in 2002 and M. S. degree from Tsinghua University, Beijing,China in 2005. His current research interests are in the filed of ultra-long span dense wavelength division multiplexing system.
