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.

引用

页数：7

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