DocumentCode :
2968939
Title :
Lossy mode resonance-based optical fiber humidity sensor
Author :
Zamarreño, C.R. ; Hernaez, M. ; Del Villar, I. ; Matias, I.R. ; Arregui, F.J.
Author_Institution :
Electr. & Electron. Eng. Dept., Public Univ. of Navarra (UPNA), Pamplona, Spain
fYear :
2011
fDate :
28-31 Oct. 2011
Firstpage :
234
Lastpage :
237
Abstract :
In this work it is presented for the first time the fabrication of optical fiber relative humidity (RH) sensors by means of polymeric thin-films as lossy mode resonance (LMR) supporting coatings. In particular, LMRs have been observed thanks to the fabrication of poly(allylamine hydrochloride) (PAH) and poly(acrylic acid) (PAA) polymeric coatings onto cladding-removed multimode optical fibers (CRMMF) employing the Layer-by-Layer (LbL) self assembly method. More than one LMR can be generated as a function of the coating thickness. This generation of multiple LMRs produces a band pass filter with a transmission band in the visible region. PAH/PAA film thickness and refractive index can be modified as a function of the surrounding medium relative humidity (SMRH). Thus, SMRH can be easily determined by measuring the wavelength shift of the transmission band (~15nm between 20% and 60% RH).
Keywords :
fibre optic sensors; humidity sensors; optical fibre fabrication; optical multilayers; polymer films; self-assembly; thin film sensors; LMR; PAA coating; PAH coating; SMRH determination; band-pass filter; cladding-removed multimode optical fibers; layer-by-layer self assembly method; lossy mode resonance; optical fiber relative humidity sensor fabrication; poly(acrylic acid) polymeric coating; poly(allylamine hydrochloride) coating; polymeric thin film sensor; refractive index; surrounding medium relative humidity; wavelength shift measurement; Coatings; Fabrication; Optical fiber losses; Optical fiber sensors; Polymers;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Sensors, 2011 IEEE
Conference_Location :
Limerick
ISSN :
1930-0395
Print_ISBN :
978-1-4244-9290-9
Type :
conf
DOI :
10.1109/ICSENS.2011.6127124
Filename :
6127124
Link To Document :
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