A miniature optical humidity sensor

Jinesh Mathew, Yuliya Semenova, Gerald Farrell

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

A miniature optical humidity sensor based on a polymer infiltrated photonic crystal fiber interferometer (PCFI) is reported for the first time. Compared to previously reported PCFI based humidity sensors, the sensitivity is improved by infiltrating the microholes of the PCF with a hygroscopic polymer. The sensor shows a high sensitivity to relative humidity (RH) variations with a change in its reflected power of about 12 dB for a humidity change of 84 %RH. The sensor demonstrated has the advantage of a very compact length of 1 mm and along with the end-type probe configuration makes this sensor suitable for monitoring humidity in microenvironments.

Original languageEnglish
Title of host publicationIEEE Sensors 2011 Conference, SENSORS 2011
Pages2030-2033
Number of pages4
DOIs
Publication statusPublished - 2011
Event10th IEEE SENSORS Conference 2011, SENSORS 2011 - Limerick, Ireland
Duration: 28 Oct 201131 Oct 2011

Publication series

NameProceedings of IEEE Sensors

Conference

Conference10th IEEE SENSORS Conference 2011, SENSORS 2011
Country/TerritoryIreland
CityLimerick
Period28/10/1131/10/11

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