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