High resolution interferometric temperature compensation using optical fibers with different temperature coefficients

被引：0
|
作者：
Tian, Meng [1 ,2 ]
Li, Huicong [1 ,2 ]
Lv, Bing [3 ,4 ]
Huang, Wenzhu [1 ,2 ]
Zhang, Wentao [1 ,2 ]
Li, Fang [1 ,2 ]
机构：
[1] Chinese Acad Sci, State Key Lab Transducer Technol, Inst Semicond, Beijing, Peoples R China
[2] Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing, Peoples R China
[3] North China Elect Power Univ, Hebei Key Lab Power Internet Things Technol, Baoding, Peoples R China
[4] North China Elect Power Univ, Baoding Key Lab Opt Fiber Sensing & Opt Commun, Baoding, Peoples R China
来源：
2023 IEEE SENSORS APPLICATIONS SYMPOSIUM, SAS | 2023年
基金：
国家重点研发计划;
关键词：
interferometric; different temperature coefficients; temperature compensation;
D O I：
10.1109/SAS58821.2023.10254120
中图分类号：
TB3 [工程材料学]; R318.08 [生物材料学];
学科分类号：
0805 ; 080501 ; 080502 ;
摘要：
In this paper, we proposed the temperature compensation theory using a pair of unbalanced interferometers composed of different temperature coefficients' optical fibers. The difference between the temperature sensitivities of the two interferometers was analyzed in detail. The larger the difference of temperature coefficients of the sensing arms is, the longer the sensing arm is, and the higher the phase demodulation resolution is, the higher the temperature resolution is. The bend-insensitive single- mode fiber and Boron/Germanium co-doped fiber were used to develop two kinds of unbalanced Michelson interferometers for the experiment. The result showed a temperature sensitivity difference of 3.93 rad/degrees C and a temperature resolution of better than the order of 10-3 degrees C, which is suitable for achieving strain measurement of sub-n epsilon for crustal deformation measurement.
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页数：4
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