OLP  can realize functions such as optical power monitoring, optical path automatic switching, and network management. In the optical communication network, OLP monitor optical power on the working fiber and the backup fiber in real time. When it detects that the optical power value on the current working fiber is lower than the set switching threshold, it will send an alarm and automatically switch to the backup fiber. Realize the protection of the optical transmission system line. OLP can simply and economically construct protection schemes for various channels and trunk lines, and can also protect various networks that require optical path switching, thereby forming a non-blocking, high-reliability, safe, flexible, and disaster-resistant optical communication net.

As shown in the figure below, dual-route transmission is deployed in the middle of the transmission system at both ends. OLP-1+1 equipment is deployed at both ends. The transmission quality of the transmission route is monitored online in real time through the optical fiber detection technology inside the equipment, and the equipment automatically follows the preset mechanism , Automatically control switching (the main route is blocked, and it will automatically switch to the backup route;).

Shenzhen Pusmai Technology ltd (sz pusmai ) OLP(Optical Line Protection）is a product used in network transmission security protection. The hardware bottom layer adopts ARM architecture, and the chassis adopts a compact layout of horizontal plug-in cards. It has the advantages of high integration, small size, and flexible configuration.