Planar Optical Waveguide Platform for Gas Sensing Using Liquid Crystal

Planar Optical Waveguide Platform for Gas Sensing Using Liquid Crystal

We propose a simple method for detecting chemical gases using liquid crystal on a planar optical waveguide. Through measuring waveguide output power, this method detects changes in the director of liquid crystal molecules as well as the refractive index, which attributed to gas exposure. We demonstr...

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Veröffentlicht in:IEEE sensors journal 2013-07, Vol.13 (7), p.2521-2522
Hauptverfasser: Ho, Wing Fat, Chan, Hau Ping, Yang, Kun Lin
Format: Artikel
Sprache:eng
Schlagworte:
Chemical sensors
Ethanol
liquid crystal (LCs)
Optical refraction
optical sensor
Optical sensors
Optical waveguides
planar lightwave waveguide
Power generation
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container_title IEEE sensors journal
container_volume 13
creator Ho, Wing Fat
Chan, Hau Ping
Yang, Kun Lin
description We propose a simple method for detecting chemical gases using liquid crystal on a planar optical waveguide. Through measuring waveguide output power, this method detects changes in the director of liquid crystal molecules as well as the refractive index, which attributed to gas exposure. We demonstrate this idea by constructing a compact and fast-response ethanol gas sensor.
doi_str_mv 10.1109/JSEN.2013.2254596
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subjects Chemical sensors
Ethanol
liquid crystal (LCs)
Optical refraction
optical sensor
Optical sensors
Optical waveguides
planar lightwave waveguide
Power generation
title Planar Optical Waveguide Platform for Gas Sensing Using Liquid Crystal
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