Title :
Experimental investigation of a surface plasmon-based integrated-optic humidity sensor
Author :
Weiss, M.N. ; Srivastava, R. ; Groger, H.
Author_Institution :
Dept. of Electr. & Comput. Eng., Florida Univ., Gainesville, FL, USA
fDate :
4/25/1996 12:00:00 AM
Abstract :
A humidity sensor has been fabricated by coating a surface plasmon waveguide with a thin layer of Nafion fluoropolymer. The refractive index of Nafion varies as a function of humidity, causing a shift in the plasmon resonance wavelength. The present device is able to measure relative humidity over a range of at least 20% to 50%, while exhibiting good linearity. Furthermore, humidity-induced index changes to Nafion occur rapidly and appear to be fully reversible
Keywords :
humidity sensors; integrated optics; optical sensors; surface plasmons; Nafion fluoropolymer coating; integrated-optic humidity sensor; refractive index; relative humidity measurement; surface plasmon waveguide;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19960520
