Fiber optic birefringence enhanced accelerometer based on polarized modal interferometer

被引：13

作者：

Zhang, Gang ^{[1
]}

Wu, Xuqiang ^{[1
]}

Li, Shili ^{[1
]}

Guang, Dong ^{[1
]}

Liu, Wei ^{[1
]}

Zuo, Cheng ^{[1
]}

Fang, Shasha ^{[1
]}

Yu, Benli ^{[1
]}

机构：

[1] Anhui Univ, Key Lab Optoelect Informat Acquisit & Manipulat, Minist Educ, Jiulong Rd 111, Hefei 230601, Anhui, Peoples R China

来源：

OPTICS COMMUNICATIONS | 2019年 / 442卷

基金：

中国国家自然科学基金; 国家重点研发计划;

关键词：

Fiber optic accelerometer; Polarized modal interferometer; Transducer cylinder; Sensitivity; Birefringence gain; REFRACTIVE-INDEX; HIGH-SENSITIVITY; STRAIN;

D O I：

10.1016/j.optcom.2019.02.062

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

An inline fiber optic birefringence enhanced accelerometer (FOBEA) which applies one polarizer and a tenmeter high birefringence fiber wrapped on a transducer cylinder is proposed. Birefringence of polarized modes in panda polarization maintaining fiber (PMF) is enhanced by fiber coating and cylinders of different parameters. Accelerometers with copper cylinder (FOBEA-1) and polyurethane cylinder (FOBEA-2) are fabricated, the tested average sensitivities are 1.06rad/g (20-3800 Hz) and 16.97 rad/g (20-2000 Hz). The experimental results show the birefringence gain of FOBEA-1 is in good consistent with theoretical calculation of 1.07 and an additional birefringence gain of FOBEA-2 is 5.52 because the polyurethane cylinder works as fiber coating with the thickness of 1.21 mm. Temperature crosstalk is also investigated.

引用

页码：8 / 12

页数：5

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