Revisiting twin-core fiber sensors for high-temperature measurements

被引：40

作者：

Rugeland, Patrik ^{[1
,2
]}

Margulis, Walter ^{[1
,2
]}

机构：

[1] Acreo, Dept Fiber Photon, S-16440 Stockholm, Sweden

[2] Royal Inst Technol, Dept Appl Phys, S-10691 Stockholm, Sweden

来源：

APPLIED OPTICS | 2012年 / 51卷 / 25期

基金：

瑞典研究理事会;

关键词：

REFRACTIVE-INDEX; OPTICAL-FIBERS; BRAGG GRATINGS; INTERFEROMETER;

D O I：

10.1364/AO.51.006227

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A twin-core fiber Michelson interferometer is evaluated as a high-temperature sensor. Although linear and reproducible operation up to 300 degrees C is obtained, at higher temperatures (700 degrees C) the refractive index shifts plastically and hysteresis is observed, rendering an untreated sensor head unusable. The shift is shown to be greatly reduced by an annealing process of the fiber for 10 h at 900 degrees C, with which the linear response is preserved. (c) 2012 Optical Society of America

引用

页码：6227 / 6232

页数：6

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