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.
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页码：8 / 12
页数：5
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