Temperature-independent tilted fiber grating vibration sensor based on cladding-core recoupling
Temperature-independent tilted fiber grating vibration sensor based on cladding-core recoupling
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DOI：
10.1364/ol.33.001004
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发表时间：
2008-05-01
期刊：
影响因子：
3.6
通讯作者：
Albert, Jacques
中科院分区：
文献类型：
--
作者：
Guo, Tuan;Ivanov, Alexei;Albert, Jacques
一种新的结构，其中一个短光纤短桩含有弱倾斜布拉格光栅拼接到另一个轻微偏移的光纤。从这种结构反射的总功率与温度无关，并且发生在两个明确定义的波长带中，当光纤短截线弯曲或振动时，其中只有一个反射不同的功率量。该智能传感结构对微弯曲具有极高的灵敏度，迄今为止，通过具有成本效益的功率检测，在温度免疫振动测量中，其频率响应已被测试为高于2 kHz。(C)2008年美国光学学会。
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.