A Self-Referencing Intensity Based Polymer Optical Fiber Sensor for Liquid Detection

被引：36

作者：

Sanchez Montero, David ^{[1
]}

Vazquez, Carmen ^{[1
]}

Moellers, Ingo ^{[2
]}

Arrue, Jon ^{[3
,4
]}

Jaeger, Dieter ^{[2
]}

机构：

[1] Univ Carlos III Madrid, Dept Tecnol Elect, Madrid 28911, Spain

[2] Univ Dusiburg Essen, ZHO Optoelekt, D-47057 Duisburg, Germany

[3] Euskal Herriko Unibertsitatea, Dept Elect & Telecomunicac, ETSII, Bilbao, Spain

[4] Euskal Herriko Unibertsitatea, IT, Bilbao, Spain

来源：

SENSORS | 2009年 / 9卷 / 08期

关键词：

polymer optical fiber; POF coupler; intensity-based optical sensor; bending losses; liquid level; LEVEL-SENSOR;

D O I：

10.3390/s90806446

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A novel self-referencing fiber optic intensity sensor based on bending losses of a partially polished polymer optical fiber (POF) coupler is presented. The coupling ratio (K) depends on the external liquid in which the sensor is immersed. It is possible to distinguish between different liquids and to detect their presence. Experimental results for the most usual liquids found in industry, like water and oil, are given. K value increases up to 10% from the nominal value depending on the liquid. Sensor temperature dependence has also been studied for a range from 25 degrees C (environmental condition) to 50 degrees C. Any sector requiring liquid level measurements in flammable atmospheres can benefit from this intrinsically safe technology.

引用

页码：6446 / 6455

页数：10

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