公开(公告)号：US20040150875A1

公开(公告)日：2004-08-05

申请号：US10357646

申请日：2003-02-04

Applicant: LUCENT TECHNOLOGIES INC.

Inventor： Daniel A. Fishman ,  Stefan Hunsche ,  Xiang Liu ,  Mahan Movassaghi ,  Chunhui Xu

IPC: H01S003/00

CPC classification number: H04B10/2916 ,  H04B2210/003

Abstract: A method, apparatus and system for reducing gain ripple in a Raman-amplified WDM system includes determining a gain profile of an optical signal transported via a first Raman amplification span in a Raman-amplified WDM system, comparing the determined gain profile to a gain profile of an optical signal transported via a second Raman amplification span, determining, from the comparison, an amount of wavelength adjustment required for a plurality of Raman pumps comprising at least one Raman pump block of the second Raman amplification span to alter the gain profile of an optical signal transported via the second Raman amplification span, such that a cumulative gain profile of an optical signal transported via the first and the second Raman amplification spans approaches a desired gain profile, and generating a control signal suitable for adjusting the wavelengths of the plurality of Raman pumps of the at least one Raman pump block an amount consistent with the determined amount.

Abstract translation: 用于减少拉曼放大WDM系统中的增益波动的方法，装置和系统包括确定经拉曼放大WDM系统中的第一拉曼放大范围传输的光信号的增益分布，将所确定的增益分布与增益曲线进行比较 通过第二拉曼放大范围传输的光信号，从比较中确定多个拉曼泵所需的波长调节量，该多个拉曼泵包括第二拉曼放大跨度的至少一个拉曼泵浦块，以改变第 经由第二拉曼放大范围传输的光信号，使得经由第一和第二拉曼放大跨度传送的光信号的累积增益分布接近所需增益分布，并产生适于调整多个波长的波长的控制信号 至少一个拉曼泵的拉曼泵阻止与所确定的量一致的量。