Discretely tunable ferroelectric liquid crystal filter for demodulation of multiple FBG sensors

Sunish Mathews*, Yuliya Semenova, Ginu Rajan, Gerald Farrell

*Corresponding author for this work

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

2 Citations (Scopus)

Abstract

A ratiometric wavelength measurement system based on a fiber bend loss edge filter has been proposed and demonstrated previously. Such a system offers the advantage of a high resolution, simplicity and a high measurement speed. The applications of such a system for the demodulation of the outputs of multiple Fiber Bragg grating (FBG) sensors requires the use of a high speed tunable filter to separate responses from multiple sensors. Here we present the results of modelling and analysis for a discretely tunable ferroelectric liquid crystal filter, which could be used as a channel dropper in a WDM-based demodulation system containing multiple FBG sensors.

Original languageEnglish
Title of host publicationOptical Sensors 2008
DOIs
Publication statusPublished - 2008
Externally publishedYes
EventOptical Sensors 2008 - Strasbourg, France
Duration: 7 Apr 200810 Apr 2008

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume7003
ISSN (Print)0277-786X

Conference

ConferenceOptical Sensors 2008
Country/TerritoryFrance
CityStrasbourg
Period7/04/0810/04/08

Keywords

  • Liquid crystal
  • Ratiometric wavelength measurement
  • Tunable filters

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