Bending and Strain Sensitivities in a Helicoidal Long-Period Fiber Gratings

被引:19
|
作者
Jung, Hojoong [1 ]
Shin, Woojin [2 ]
Kim, Jun Ki [3 ]
Park, Seung-Han [1 ]
Ko, Do-Kyeong [2 ]
Lee, Jongmin [2 ]
Oh, Kyunghwan [1 ]
机构
[1] Yonsei Univ, Inst Phys & Appl Phys, Seoul 120749, South Korea
[2] GIST, Adv Photon Res Inst, Kwangju 500712, South Korea
[3] Fraunhofer Inst Appl Opt & Precis Engn, D-07745 Jena, Germany
关键词
Bending sensor; CO2; laser; fiber sensor; helicoidal long-period fiber gratings (HLPGs); strain sensor; SENSORS; CO2-LASER;
D O I
10.1109/LPT.2009.2024646
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
In this letter, we report bending and strain sensitivities of helicoidal long- period fiber gratings fabricated by twisting single- mode fibers during CO2 laser irradiation. Linear spectral shifts of the resonant wavelengths under the bending and tensile strain were observed with the sensitivities of 11.7 nm/m(-1) and 1.1 pm/mu epsilon, respectively. The corresponding transmission power variations at the resonance wavelength were 4.1 dB/m(-1) and 2.2 x 10(-4) dB/mu epsilon, respectively. Detailed measurement techniques and sensor applications are discussed.
引用
收藏
页码:1232 / 1234
页数:3
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