分布光纤拉曼放大器对光通信系统传输性能的改善

Improvement of Transmission Performances of Optical Communication Systems by Distributed Fiber Raman Amplifiers

考察了后向抽运分布光纤拉曼放大器 (B DFRA)对光通信系统传输性能的改善。分别讨论了B DFRA的两种可能用途 :1)作为第一级预放器与掺铒光纤放大器 (EDFA)及光接收机一同构成接收终端。 2 )在一个有中继的长距离光通信系统中作为各级EDFA的预放器。针对这两种用途分别计算出B DFRA对系统性能的影响 。

An optical communication system with both EDFA and B-DFRA is introduced. Two applications of B-DFRA are studied. The first case is a receiver terminal with a receiver, an EDFA preamplifier and a B-DFRA. The second case is a multistage point to point optical repeated system with both EDFA and B-DFRA. The performance improvements in the two cases are calculated. The principle of the Raman pump power selection is discussed.