Optical fiber humidity sensor based on Michelson interferometric structures

An optical fiber humidity sensor composed of a chitosan-coated, waist-enlarged bitaper-based Michelson interferometer (WEBMI) is presented. The achieved sensitivity is further enhanced by more than 5 times, from 26 pm/%RH to 135 pm/%RH, by reducing the fiber cladding thickness and oxidizing the chit...

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Bibliographic Details
Main Authors: Xinyong Dong, Pengbing Hu, Chi Chiu Chan, Ping Shum
Format: Conference Proceeding
Language:English
Subjects:
Biomedical optical imaging
humidity sensor
Michelson interferometer
Optical fiber sensor
Optical fiber sensors
Optical fibers
Optical films
Optical refraction
waist-enlarged bitaper
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Summary:An optical fiber humidity sensor composed of a chitosan-coated, waist-enlarged bitaper-based Michelson interferometer (WEBMI) is presented. The achieved sensitivity is further enhanced by more than 5 times, from 26 pm/%RH to 135 pm/%RH, by reducing the fiber cladding thickness and oxidizing the chitosan film.
DOI:10.1109/ICAIT.2013.6621524