摘要
Until now, a high-efficiency demodulation method for fiber Bragg grating(FBG) sensors has been a challenge.In this Letter, by employing multi-peak FBGs, an FBG sensor with a partial wavelength scan is proposed and initially demonstrated. By demodulating a near-symmetrical multi-peak FBG and an asymmetrical multi-peak FBG in the strain experiment, sensor sensitivities of 1.02 pm/με and 1.01 pm/με are measured for the interrogation system, respectively. The average demodulation deviations for the two sensors are 1.81% and 0.4%,respectively. The proposed method is expected to realize high-efficiency and low-cost FBG interrogators.
作者
Pan Dai
Yu Zhou
Leilei Wang
Shangjing Liu
Xuping Zhang
Xiangfei Chen
戴攀;周昱;王磊磊;刘尚靖;张旭苹;陈向飞(Key Laboratory of Intelligent Optical Sensing and Manipulation of the Ministry of Education,Institute of Optical Communication Engineering,Nanjing University,Nanjing 210093,China;National Laboratory of Solid State Microstructures,College of Engineering and Applied Sciences,Nanjing University,Nanjing 210093,China)
基金
supported by the National Key R&D Program of China(Nos.2017YFA0206401 and 2018YFB2201801)
the National Natural Science Foundation of China(No.61435014)
the Key R&D Program of Jiangsu Province(No.BE2017003)
the Natural Science Foundation of Jiangsu Province(No.BK20160907)
