Bragg grating evanescent field sensor made in biconical tapered fiber with femtosecond IR radiation

被引：33

作者：

Grobnic, D ^{[1
]}

Mihailov, SJ ^{[1
]}

Ding, HM ^{[1
]}

Smelser, CW ^{[1
]}

机构：

[1] Commun Res Ctr, Ottawa, ON K2H 8S2, Canada

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 2006年 / 18卷 / 1-4期

关键词：

evanescent field; fiber Bragg gratings (FBGs); fiber sensors; fiber tapers; ultrafast optics;

D O I：

10.1109/LPT.2005.860372

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 [电气工程]; 0809 [电子科学与技术];

摘要：

Retro-reflective Bragg gratings were made with a phase mask and femtosecond radiation from a Ti:sapphire infrared laser into the core and cladding region of a tapered single-mode fiber. The evanescent field in the taper interacts with the ambient environment and the intensity of the reflected signal is used to measure the refractive index changes of the ambient environment as low as 2.5 x 10(-5). By controlling the immersion depth of the grating taper, use of the taper as a single port point sensor for measuring fluid levels is also demonstrated.

引用

收藏

页码：160 / 162

页数：3

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