Ultra-high sensitivity Fabry-Perot interferometer gas refractive index fiber sensor based on photonic crystal fiber and Vernier effect

被引：295

作者：

Quan, Mingran ^{[1
]}

Tian, Jiajun ^{[1
]}

Yao, Yong ^{[1
]}

机构：

[1] Harbin Inst Technol, Shenzhen Grad Sch, Dept Elect & Informat Engn, Shenzhen 518055, Guangdong, Peoples R China

来源：

OPTICS LETTERS | 2015年 / 40卷 / 21期

基金：

中国国家自然科学基金;

关键词：

TIP SENSOR; PRESSURE; CAVITY;

D O I：

10.1364/OL.40.004891

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

An ultra-high sensitivity open-cavity Fabry-Perot interferometer (FPI) gas refractive index (RI) sensor based on the photonic crystal fiber (PCF) and Vernier effect is proposed and demonstrated. The sensor is prepared by splicing a section of PCF to a section of fiber tube fused with a section of single mode fiber. The air holes running along the cladding of the PCF enable the gas to enter or leave the cavity freely. The reflection beam from the last end face of the PCF is used to generate the Vernier effect, which significantly improves the sensitivity of the sensor. Experimental results show that the proposed sensor can provide an ultra-high RI sensitivity of 30899 nm/RIU. This sensor has potential applications in fields such as gas concentration analyzing and humidity monitoring. (C) 2015 Optical Society of America

引用

页码：4891 / 4894

页数：4

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