Patent ID: 9191101
Filing Date: 2015-11-17
Classification: H04B,H04J,H04Q

Abstract:
1. An optical line transmission protection system, comprising: at least one stage of an optical line protection segment having a transmitting end of a local Optical Line Protector (OLP) provided with a Tunable Optical Divide Module (TOD), and a receiving end of an opposite OLP provided with an Optical Switch (OSW); the transmitting end is connected to the receiving end to form a main optical line and a standby optical line; and the TOD is configured to set splitting ratios of the main optical line to be higher and set the splitting ratio of the standby optical line to be lower when the main optical line is a current working channel, and set the splitting ratio of the standby optical line to be higher and set the splitting ratio of the main optical line to be lower after the transmitting end receiving a tuning start command from the receiving end, and tune optical power distributions at respective transmitting ends of the main and standby optical lines, according to the splitting ratios of the main and standby optical lines; wherein optical power of the standby optical line can ensure a smooth service when the main optical line is the current working channel.