Miniaturized fiber taper reflective interferometer for high temperature measurement

被引：155

作者：

Kou, Jun-long ^{[1
]}

Feng, Jing

Ye, Liang

Xu, Fei

Lu, Yan-qing

机构：

[1] Nanjing Univ, Coll Engn & Appl Sci, Nanjing 210093, Peoples R China

来源：

OPTICS EXPRESS | 2010年 / 18卷 / 13期

基金：

美国国家科学基金会;

关键词：

FABRY-PEROT-INTERFEROMETER; SAPPHIRE-FIBER; FEMTOSECOND LASER; REFRACTIVE-INDEX; SENSOR;

D O I：

10.1364/OE.18.014245

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We present an ultra-small all-silica high temperature sensor based on a reflective Fabry-Perot modal interferometer (FPMI). Our FPMI is made of a micro-cavity (similar to 4.4 mu m) directly fabricated into a fiber taper probe less than 10 mu m in diameter. Its sensing head is a miniaturized single mode-multimode fiber configuration without splicing. The sensing mechanism of FPMI is the interference among reflected fundamental mode and excited high-order modes at the end-faces. Its temperature sensitivity is similar to 20 pm/degrees C near the wavelength of 1550 nm. This kind of sensor can work in harsh environments with ultra-large temperature gradient, but takes up little space because of its unique geometry and small size. (C) 2010 Optical Society of America

引用

页码：14245 / 14250

页数：6

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