具有色散补偿功能的Raman光纤光放大器(英文)

光纤损耗和色度色散是限制高速光纤系统传输容量的两个主要因素。损耗导致光在光纤中的衰减,传输一定距离后需要放大;而色度色散引起脉冲展宽,长距离传输需要色散补偿或采用其它色散管理手段。利用色散补偿光纤既可以进行色散补偿,又能作为喇曼光放大器增益介质使用的特点,分别测量了光纤的色散特性和喇曼增益特性,设计了通过色散补偿光纤同时进行色散补偿和喇曼光放大的系统方案,实验结果表明50公里单模光纤的色散和损耗(约10dB)可以通过采用5.6公里色散补偿光纤、具有12dB增益的Raman光放大器完全补偿。

Optical amplification and dispersion compensation in one step

Optical fibers are used worldwide in optical communication networks. Millions of kilometer fibers are the backbone of these networks. In single-mode fibers one has two major problems: (a) Losses in fibers resulting in the need for amplification after a certain fiber length, and (b) dispersion resulting in a prolongation of bit and thus in the need of dispersion compensation after another certain fiber length. We present preliminary results on optical amplification by Raman amplifiers and dispersion compensation by dispersion-compensating fibers in one step.