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Bo Liu, Yin-Ping Miao, Hai-Bin Zhou, Qi-Da Zhao. Pure Bending Characteristic of Tilted Fiber Bragg Grating[J]. Journal of Electronic Science and Technology, 2008, 6(4): 470-473.
Citation: Bo Liu, Yin-Ping Miao, Hai-Bin Zhou, Qi-Da Zhao. Pure Bending Characteristic of Tilted Fiber Bragg Grating[J]. Journal of Electronic Science and Technology, 2008, 6(4): 470-473.
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Pure Bending Characteristic of Tilted Fiber Bragg Grating

  • Institute of Modern Optics,Nankai University,Tianjin,300071,China

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This work is supported by the National 863 Program under Grant No. 2006AA01Z217, the National Natural Science Foundation of China under Grant No. 60736039 and 60572018, and the Technological Tackle Key Problem Project of Tianjin under Grant No. 07ZCKFGX00200.

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  • Author Bio:

    Bo Liu research interests are fiber sensors, fiber Bragg grating (FBG) sensors, and interrogation systems, liupipi@nankai.edu.cn;
    Yin-Ping Miao, kikosi@126.com;
    Hai-Bin Zhou, zhouhaibin@mail.nankai.edu.cn;
    Qi-Da Zhao, zhaoqd@nankai.edu.cn

    Bo Liu research interests are fiber sensors, fiber Bragg grating (FBG) sensors, and interrogation systems, liupipi@nankai.edu.cn;
    Yin-Ping Miao, kikosi@126.com;
    Hai-Bin Zhou, zhouhaibin@mail.nankai.edu.cn;
    Qi-Da Zhao, zhaoqd@nankai.edu.cn

    Bo Liu research interests are fiber sensors, fiber Bragg grating (FBG) sensors, and interrogation systems, liupipi@nankai.edu.cn;
    Yin-Ping Miao, kikosi@126.com;
    Hai-Bin Zhou, zhouhaibin@mail.nankai.edu.cn;
    Qi-Da Zhao, zhaoqd@nankai.edu.cn

    Bo Liu research interests are fiber sensors, fiber Bragg grating (FBG) sensors, and interrogation systems, liupipi@nankai.edu.cn;
    Yin-Ping Miao, kikosi@126.com;
    Hai-Bin Zhou, zhouhaibin@mail.nankai.edu.cn;
    Qi-Da Zhao, zhaoqd@nankai.edu.cn

  • Received Date: 2008-09-02
  • Rev Recd Date: 2008-10-29
  • Publish Date: 2008-12-24
    Abstract
  • A novel structure of the pure macrobending sensor based on the tilted fiber Bragg grating (TFBG) is proposed. The TFBG located in the half circle with the different diameters is bent at a constant angle with respect to the tilted grating planes. With the variations of the curvature, the core-mode resonance is unchanged and the transmission power of cladding modes detected by the photodiodes varies linearly with curvature, while the ghost mode changes by the form of two-order polynomial. So we can use the transmission power of ghost mode or other cladding modes to detect bending curvature as shape sensor. From a practical point of view, the sensor proposed here is simple, low cost and easy to implement. Moreover, it is possible to make a temperature-insensitive shape sensor due to the same temperature characteristic between the core mode and the cladding modes.
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