Temperature insensitive one-dimensional bending vector sensor based on eccentric-core fiber and air cavity Fabry-Perot interferometer

被引：30
作者：
Kong, Jing [1 ,2 ]
Zhou, Ai [3 ]
Yuan, Libo [1 ]
机构：
[1] Harbin Engn Univ, Key Lab Infiber Integrated Opt, Minist Educ China, Harbin 150001, Heilongjiang, Peoples R China
[2] Heilongjiang Inst Technol, Harbin 150001, Heilongjiang, Peoples R China
[3] Wuhan Univ Technol, Natl Engn Lab Fiber Opt Sensing Technol, Wuhan 430074, Hubei, Peoples R China
来源：
JOURNAL OF OPTICS | 2017年 / 19卷 / 04期
基金：
中国国家自然科学基金;
关键词：
bending; temperature insensitive; eccentric-core fiber; air cavity; Fabry-Perot interferometer; PHOTONIC CRYSTAL FIBER; MACH-ZEHNDER INTERFEROMETER; CURVATURE MEASUREMENT;
D O I：
10.1088/2040-8986/aa535b
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A temperature insensitive directional bending sensor based on an eccentric-core fiber (ECF) cascaded with an air-cavity Fabry-Perot (F-P) interferometer is presented and demonstrated. The ECF-based air cavity F-P interferometer is fabricated by fuse splicing a piece of hollow-core fiber (HCF) in between an ECF and a multi-mode fiber (MMF). The bending sensitivities of the sensor at the two opposite most sensitive directions are 79.5 pm/m(-1) and -81.5 pm/m(-1), respectively. The temperature sensitivity of the proposed structure is as low as 1 pm degrees C-1.
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页数：5
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