含光放站的光线路保护系统失效问题与改进研究

Research on Failure and Improvement of Optical Line Protection System with Optical Line Amplifier Station

文章针对中途含有OLA(光线路放大器)站点、采用双径路OLP(光线路保护)组网的干线密集波分复用传输系统存在的保护倒换失效问题进行了原因分析,认为上游OLA站监控信道光的干扰是主因,并通过实施OLP板后移、增加光放大板冗余的优化改进方案,提高系统可靠性。

This paper analyzes the problem of protection switching failure in the trunk DWDM transmission system with dual path OLP(Optical Line Protection)network and OLA(Optical Line Amplifier)stations in the middle.It is believed that the interference of the optical supervisory channel light at the upstream OLA station is the main cause.By implementing an optimization and improvement plan of moving the OLP board backward and increasing the redundancy of the optical amplifier board,the system reliability is improved.