Demodulation of the multi-peak fiber Bragg grating sensor based on partial wavelength scan

被引：3
|
作者：
Dai, Pan [1 ,2 ]
Zhou, Yu [1 ,2 ]
Wang, Leilei [1 ,2 ]
Liu, Shangjing [1 ,2 ]
Zhang, Xuping [1 ,2 ]
Chen, Xiangfei [1 ,2 ]
机构：
[1] Nanjing Univ, Inst Opt Commun Engn, Minist Educ, Key Lab Intelligent Opt Sensing & Manipulat, Nanjing 210093, Peoples R China
[2] Nanjing Univ, Natl Lab Solid State Microstruct, Coll Engn & Appl Sci, Nanjing 210093, Peoples R China
来源：
CHINESE OPTICS LETTERS | 2020年 / 18卷 / 07期
基金：
中国国家自然科学基金; 国家重点研发计划;
关键词：
fiber Bragg grating; fiber sensor; multi-peak fiber Bragg grating; WIDE TUNING RANGE; STRAIN SENSOR; LASER;
D O I：
10.3788/COL202018.071201
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
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/mu e and 1.01 pm/mu e 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.
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页数：7
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