摘要
Intensity-modulated fiber Bragg grating （FBG） sensors, compared with normal wavelength-encoding FBG sensors, can reduce the cost of sensor system significantly by using cost-efficient optical power detection devices, instead of expensive wavelength measurement instruments. Chirped-FBG （CFBG） based intensity-modulated sensors show potential applications in various sensing areas due to their many advantages, including inherent independence of temperature, high measurement speed, and low cost, in addition to the merits of all fiber-optic sensors. This paper theoretically studies the sensing principle of CFBG-based intensity-modulated sensors and briefly reviews their recent progress in measurement of displacement, acceleration, and tilt angle.
基金
This work was co-supported by the National Basic Research Program of China （973 Program） under Grant No. 2010CB327804, the National Natural Science Foundation of China under Grant No. 60807021, and the Natural Science Foundation of Zhejiang Province, China under Grant No. RI080087. The author thanks all the collaborators and students who contributed to this work.
