A new structure of fiber Bragg grating with increased sensitivity to pressure and decreased sensitivity to temperature

被引：0
|
作者：
Toroghi, S [1 ]
Latifi, H [1 ]
Afshari, M [1 ]
Aref, SH [1 ]
机构：
[1] Shahid Beheshti Univ Med Sci, Laser Res Inst, Tehran, Iran
来源：
INTERNATIONAL CONFERENCE ON LASER, APPLICATIONS, AND TECHNOLOGIES 2005: LASER SENSING, IMAGING, AND INFORMATION TECHNOLOGIES | 2006年 / 6162卷
关键词：
FBG; polymer coating; fiber Bragg grating; sensor; pressure; temperature;
D O I：
10.1117/12.675061
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
In this article, we propose a simple method to increase the pressure sensitivity of a typical fiber Bragg grating (FBG) while decreasing the temperature sensitivity. This method uses a typical FBG, which is coated with a thick layer of polymer with two symmetric air channels. By this method the pressure sensitivity can be increased (e.g. 1.1x10(-5)/MPa) while the temperature sensitivity is negligible (e.g. -0.174x10(-8)/degrees C) by proper selection of the geometrical parameters and material types of the sensor.
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页数：7
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