LED-BASED FIBER OPTIC OXYGEN SENSOR USING SOL-GEL COATING

被引：59

作者：

MACCRAITH, BD

OKEEFFE, G

MCDONAGH, C

MCEVOY, AK

机构：

[1] School of Physical Sciences, Dublin City University, Glasnevin

来源：

ELECTRONICS LETTERS | 1994年 / 30卷 / 11期

关键词：

FIBER OPTIC SENSORS; GAS SENSORS; SOL-GEL PROCESSING;

D O I：

10.1049/el:19940578

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

An intrinsic evanescent wave fibre optic sensor for oxygen is reported, The sensor is based on the quenching of fluorescence from a ruthenium complex trapped m the cage-like structure of a sol-gel-derived porous film on a de-clad section of multimode optical fibre. The sensor exhibits excellent performance using blue LED excitation and silicon photodiode detection, and establishes the viability of low-cost portable sensor devices based on the sol-gel process. Gas phase measurement data over the range 0-100% oxygen exhibit high signal-to-noise ratio (approximately 150), good repeatability and short response time (< 5s).

引用

页码：888 / 889

页数：2

共 7 条

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