Microstructured optical fiber coated with thin films for gas and chemical sensing

被引:55
作者
Minkovich, Vladimir P.
Monzon-Hernandez, D.
Villatoro, Joel
Badenes, Goncal
机构
[1] Ctr Invest Opt AC, Leon 37150, Spain
[2] Inst Ciencies Foton, Mediterranean Technol Pk, Castelldefels 08860, Barcelona, Spain
来源
OPTICS EXPRESS | 2006年 / 14卷 / 18期
关键词
D O I
10.1364/OE.14.008413
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
We propose the use of tapered microstructured fibers with collapsed air-holes coated with thin layers for gas sensing. The collapsing of the holes allows having access to the evanescent fields which can be absorbed or attenuated with gas-permeable thin films. On the other hand, a section of the holey fiber is transformed into a solid multimode fiber. The beating between the multiple modes of the latter makes the transmission spectra of the device to exhibit an oscillatory pattern. This evanescent-fields-plus-modal-interferometer structure may offer interesting properties for gas and chemical sensing. As an example we demonstrate a hydrogen sensor. (c) 2006 Optical Society of America
引用
收藏
页码:8413 / 8418
页数:6
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