EXPERIMENTAL INVESTIGATION OF A SURFACE PLASMON-BASED INTEGRATED-OPTIC HUMIDITY SENSOR

Authors
WEISS MN SRIVASTAVA R GROGER H
Citation
Mn. Weiss et al., EXPERIMENTAL INVESTIGATION OF A SURFACE PLASMON-BASED INTEGRATED-OPTIC HUMIDITY SENSOR, Electronics Letters, 32(9), 1996, pp. 842-843
Citations number
8
Categorie Soggetti
Engineering, Eletrical & Electronic
Journal title
Electronics Letters → ACNP
ISSN journal
00135194
Volume
32
Issue
9
Year of publication
1996
Pages
842 - 843
Database
ISI
SICI code
0013-5194(1996)32:9<842:EIOASP>2.0.ZU;2-J
Abstract
A humidity sensor has been fabricated by coating a surface plasmon wav eguide with a thin layer of Nafion fluoropolymer. The refractive index of Nafion varies as a function of humidify, causing a shift iii the p lasmon resonance wavelength. The present device is able to measure rel ative humidity over a range of at least 20% to 50%, while exhibiting g ood linearity. Furthermore, humidity-induced index changes to Nafion o ccur rapidly and appear to be fully reversible.