Strain force sensor with ultra-high sensitivity based on fiber inline Fabry-Perot micro-cavity plugged by cantilever taper

被引：54

作者：

Liu, Yi ^{[1
]}

Lang, Changpeng ^{[1
]}

Wei, Xiaocun ^{[1
]}

Qu, Shiliang ^{[2
]}

机构：

[1] Harbin Inst Technol, Dept Optoelect Sci, Weihai 264209, Peoples R China

[2] Harbin Inst Technol, Dept Phys, Harbin 150000, Peoples R China

来源：

OPTICS EXPRESS | 2017年 / 25卷 / 07期

基金：

美国国家科学基金会;

关键词：

MACH-ZEHNDER INTERFEROMETER; PHOTONIC CRYSTAL FIBER; TEMPERATURE; FABRICATION;

D O I：

10.1364/OE.25.007797

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A strain force sensor based on fiber inline Fabry-Perot (FP) micro-cavity plugged by cantilever taper was proposed. The structure was fabricated by simple and cost-effective method only including fiber cleaving, tapering and splicing. The active-length of the FP micro-cavity reached 1360 mu m, while the interference length was only 3.5 mu m. Owing to the ultra-long active-length and ultra-short interference length, the strain force sensitivity of the fiber inline FP micro-cavity plugged by cantilever taper reached as high as 841.59 nm/N. Besides, the proposed structure showed good linearity (99.9%) in the sensing process and small temperature crosstalk (11 pm/C-circle). It can be used as a practical and reliable strain force sensor. (C) 2017 Optical Society of America

引用

页码：7797 / 7806

页数：10

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