FIBER BRAGG GRATING SENSING SYSTEM USING THE MULTIPLEXER FOR MULTI-CHANNEL

摘要

The invention relates to a fiber bragg grating sensing system using the multiplexer for multi-channel. In particular, for the fiber bragg grating sensing system, multiple fiber bragg grating sensors are in star connection with secondary multi-channels, and a primary channel of the multiplexer is connected with an optical wave length measuring device, so the radiating light radiated by the optical wave length measuring device is transmitted to the multiple fiber bragg grating sensors via the multiplexer, and then the reflected light sensed and reflected by the multiple fiber bragg grating sensors are transmitted to the optical wave length measuring device via the multiplexer, and finally the optical wave length can be measured. The optical wave length is transmitted to a PC, and the PC can sense each of the fiber bragg grating sensors, so the precision is improved, and the error rate is reduced.