Compressible fiber optic micro-Fabry-Perot cavity with ultra-high pressure sensitivity

被引：79

作者：

Wang, Ying ^{[1
,2
,3
]}

Wang, D. N. ^{[1
]}

Wang, Chao ^{[1
]}

Hu, Tianyi ^{[1
]}

机构：

[1] Hong Kong Polytech Univ, Dept Elect Engn, Hong Kong, Hong Kong, Peoples R China

[2] Wuhan Inst Technol, Lab Opt Informat Technol, Wuhan 430073, Peoples R China

[3] Wuhan Inst Technol, Sch Sci, Wuhan 430073, Peoples R China

来源：

OPTICS EXPRESS | 2013年 / 21卷 / 12期

基金：

美国国家科学基金会;

关键词：

PHOTONIC CRYSTAL FIBER; SILVER DIAPHRAGM; SENSOR;

D O I：

10.1364/OE.21.014084

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We propose and demonstrate a pressure sensor based on a micro air bubble at the end facet of a single mode fiber fusion spliced with a silica tube. When immersed into the liquid such as water, the air bubble essentially acts as a Fabry-Perot interferometer cavity. Such a cavity can be compressed by the environmental pressure and the sensitivity obtained is >1000 nm/kPa, at least one order of magnitude higher than that of the diaphragm-based fiber-tip sensors reported so far. The compressible Fabry-Perot interferometer cavity developed is expected to have potential applications in highly sensitive pressure and/or acoustic sensing. (C) 2013 Optical Society of America

引用

页码：14084 / 14089

页数：6

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