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

被引：75
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
收藏
页码：14084 / 14089
页数：6
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