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Microstructure fibres for optical sensing in gases and liquids

被引：248
作者：
Fini, JM [1 ]
机构：
[1] OFS Labs, Murray Hill, NJ 07302 USA
来源：
MEASUREMENT SCIENCE AND TECHNOLOGY | 2004年 / 15卷 / 06期
关键词：
fibre sensors; microstructure fibres; speciality fibres; optical sensing;
D O I：
10.1088/0957-0233/15/6/011
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A novel water-core microstructure fibre design allows nearly ideal guidance for aqueous sensing applications. The total internal reflection by a microstructured silica-air cladding provides robust confinement of light in a fluid-filled core, if the average cladding index is sufficiently below the index of water. Numerical results show dramatically improved loss and overlap of light with the sample, compared to evanescent-field fibres, indicating a direct improvement of sensor performance. A strategy for the improvement of evanescent-wave gas sensors is also discussed.
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页码：1120 / 1128
页数：9
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