Planar Optical Waveguide Platform for Gas Sensing Using Liquid Crystal

被引：15
|
作者：
Ho, Wing Fat [1 ]
Chan, Hau Ping [1 ]
Yang, Kun Lin [2 ]
机构：
[1] City Univ Hong Kong, Kowloon, Hong Kong, Peoples R China
[2] Natl Univ Singapore, Singapore 119279, Singapore
来源：
IEEE SENSORS JOURNAL | 2013年 / 13卷 / 07期
关键词：
Ethanol; liquid crystal (LCs); optical sensor; planar lightwave waveguide; VAPOR;
D O I：
10.1109/JSEN.2013.2254596
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
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.
引用
收藏
页码：2521 / 2522
页数：2
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