Optical fiber humidity sensor based on a tapered fiber coated with agarose gel

被引：228

作者：

Bariáin, C ^{[1
]}

Matías, IR ^{[1
]}

Arregui, FJ ^{[1
]}

López-Amo, M ^{[1
]}

机构：

[1] Univ Publ Navarra, Dept Ingn Elect & Elect, Pamplona 31006, Spain

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2000年 / 69卷 / 1-2期

关键词：

fiber optic sensors; humidity sensors; tapered optical fiber; hydrophilic materials; environmental sensors;

D O I：

10.1016/S0925-4005(00)00524-4

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

An optical fiber humidity sensor (OFHS) has been fabricated using a hydrophilic gel (agarose) deposited on the thinner zone of a biconically tapered single-mode optical fiber. A variation of up to 6.5 dB of the transmitted optical power was obtained with relative humidity (RH) changes between 30% and 80%. Furthermore, the sensor shows an invariant behavior with time. This inexpensive material showed a good reproducibility with low hysteresis and its use with tapered optical fiber makes it useful for industrial and environmental applications. (C) 2000 Elsevier Science S.A. All rights reserved.

引用

页码：127 / 131

页数：5

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