Title :
An optical relative humidity sensor based on the enhanced Goos-Hanchen shift
Author :
Xianping Wang;Wen Yuan;MingHuang Sang
Author_Institution :
Department of Physics, Key Laboratory of Optoelectronic and Telecommunication of Jiangxi Province, Jiangxi Normal University, Nanchang, China
fDate :
6/1/2015 12:00:00 AM
Abstract :
A high-sensitivity optical relative humidity (RH) sensor based on the enhanced Goos-Hanchen (GH) shift in a polyimide-coated symmetrical metal cladding waveguide is proposed. The interaction between the diffused water molecules and the polyimide film can lead to a combined change in the thickness and the refractive index, which will give rise to a dramatic change of GH shift. Our optical RH sensor can provide a good linearity and a short response time.
Keywords :
"Optical polarization","Optical reflection","Optical sensors","Optical films","Dielectric materials","Gold"
Conference_Titel :
Opto-Electronics and Communications Conference (OECC), 2015
Electronic_ISBN :
2166-8892
DOI :
10.1109/OECC.2015.7340202
