UV Sensor Based on Photomechanically Functional Polymer-Coated FBG

被引:38
作者
Kim, Hyun-Kyoung [1 ]
Shin, Woojin [2 ]
Ahn, Tae-Jung [3 ]
机构
[1] Chosun Univ, Dept Polymer Sci & Engn, Kwangju, South Korea
[2] Gwangju Inst Sci & Technol, APRI, Kwangju, South Korea
[3] Chosun Univ, Dept Photon Engn, Kwangju, South Korea
关键词
Fiber Bragg grating (FBG); functional polymer; optical fiber sensor; ultraviolet (UV) light; SWITCHING BEHAVIOR; LIGHT; FIBER; NETWORK;
D O I
10.1109/LPT.2010.2059375
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 ; 0809 ;
摘要
A simple ultraviolet (UV) sensor based on a photomechanical responsible material (azobenzene moiety) and a typical fiber Bragg grating (FBG) has been proposed and demonstrated for the first time. This sensing device, called the azobenzene-coated FBG sensor, can easily measure the UV light intensity by determination of its center wavelength shift which results from the photoisomerization of the azobenzene moieties. We show that the peak wavelength can be rapidly shifted up to 0.6 nm because of the photomechanical stretching effect of the azobenzene-coated FBG. The strain applied to the FBG under a UV intensity of 208 mW/cm was estimated to be 0.054%. We have also confirmed the linearity and stability of our proposed UV sensor.
引用
收藏
页码:1404 / 1406
页数:3
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