不同传输速率系统的光线路保护解决方案研究

Research on Optical Line Protection Solution in Different Transmission Rate System

随着光纤网络传输速率的不断提高,OLP作为保证其可靠性的有效技术,也不断面临着新的问题和挑战。基于OLP系统的工作原理,分析了目前主流的10Gbit/s及以下速率传输系统中OLP的关注要点及其解决方案;针对40Gbit/s传输系统的特殊性,尤其是色散补偿方面的问题,分析并给出了可行的解决方法;对于100Gbit/s传输系统,通过对其核心实现技术——基于相干检测的DP-QPSK调制技术的分析,结合OLP技术原理,给出了该速率下OLP系统可行的解决方案。

With the acceleration of optical fibre link transmission, new problems and challenges are brought to OLP to ensure the reliability. Based on the principle of OLP system, this paper analyzes the key point and the solution for the OLP system of 10Gbit/s and below it. For the transmission system of 40Gbit/s, especially for the dispersion compensation, the paper analyzes and proposes the available solution. As to the transmission system of 100Gbit/s, the paper introduces a feasible scheme for the OLP system, combined with OLP technic principle and analysis of the core technique which is DP-QPSK modulating based on coherent detection.