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

Cándido Bariáin; Ignacio R. Matías; Francisco J. Arregui; Manuel López-Amo

doi:10.1016/S0925-4005(00)00524-4

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

Cándido Bariáin
, Ignacio R. Matías
, Francisco J. Arregui
, Manuel López-Amo

Public University of Navarre

Research output: Contribution to journal › Article › peer-review

271 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	127-131
Number of pages	5
Journal	Sensors and Actuators B: Chemical
Volume	69
Issue number	1
DOIs	https://doi.org/10.1016/S0925-4005(00)00524-4
Publication status	Published - 10 Sept 2000
Externally published	Yes

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10.1016/S0925-4005(00)00524-4

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AB - 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.

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

Abstract

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