Temperature-independent tilted fiber grating vibration sensor based on cladding-core recoupling

被引：125

作者：

Guo, Tuan ^{[1
]}

Ivanov, Alexei ^{[1
]}

Chen, Chengkun ^{[1
]}

Albert, Jacques ^{[1
]}

机构：

[1] Carleton Univ, Dept Elect, Ottawa, ON K1S 5B6, Canada

来源：

OPTICS LETTERS | 2008年 / 33卷 / 09期

关键词：

D O I：

10.1364/OL.33.001004

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A novel structure in which a short optical fiber stub containing a weakly tilted Bragg grating is spliced to another slightly offset fiber. The total power reflected from this structure is independent of temperature and occurs in two well-defined wavelength bands, only one of which reflects a different amount of power as the fiber stub bends or vibrates. The smart sensing structure presents an extremely high sensitivity for microbending, and its frequency response has been tested to higher than 2 kHz so far in temperature-immune vibration measurements via cost-effective power detection. (C) 2008 Optical Society of America.

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页码：1004 / 1006

页数：3

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