ADL5304在光线路保护系统中的应用

Application of ADL5304 in OLP system

1∶1类型的光线路保护(Optical Line Protection,OLP)系统,不仅要检测光功率,还要解调携带同步切换协议信息的光信号,否则将无法实现同步切换。设计1∶1类型OLP系统,使用ADL5304对数转换器,能够在实时监测光功率的同时,解调OLP模块内部之间传输的光信号。实验测试表明,输入到ADL5304的光信号平均功率≥-60d Bm时,OLP本端模块能够准确获知对端模块发送的协议指令信息。该方案可以简化电路设计、降低生产成本、提高OLP系统的稳定性。

As to the 1：1 optical line protection（OLP） system,it needs not only to detect the optical power but also to decode the optical signal with information of the synchronization switch protocol,otherwise it will not be able to keep the system synchronous.The designed 1：1 OLP system which using ADL5304 is able to decode the optical signal that transmits between OLP modules while real-time monitoring the optical power.Experiment shows that the local OLP module can identify the accurate information which transmits from the other OLP module when the mean optical signal power into the ADL5304 is ≥-60 dBm.The design may simplify the circuits,reduce cost,and enhance the stability of OLP system.