Sensing system with Michelson-type fiber optical interferometer based on single FBG reflector
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摘要:
As a simple fiber optic component,fiber Bragg grating (FBG) has been used frequently as a sensor,filter or reflector[1-4],etc.Meanwhile,the Michelson-type fiber optical interferometric sensor has achieved a high level of development in the acoustic,electric,and magnetic field sensors because of its simple and low-cost structure as well as multiplexing advantages.The Michelsontype interferometer has been widely applied with Faraday rotating mirrors (FRMs) or polarization maintaining fiber reflectors particularly in the fiber optic hydrophone system[5,6].At present,further research is aimed at simplifying fiber optical interferometric sensors.