[1] [1] V. Bhatia,A. M. Vengsarkar. Optical fiber long-period grating sensors [J]. Opt. Lett.,1996,21(9):692-694

[2] [2] Liao Xian,Rao Yunjiang,Ran Zengling et al.. Simultaneous measurement of high-temperature and strain using a combined long-period fiber grating/Fabry-Pérot sensor fabricated by laser pulses[J ]. Chinese J. Lasers,2008,35(6):884-888

[3] [3] Yan Jinhua,Jing Meng. A high-sensitivity refractive-index sensor using LPG[J] . J. Optoelectronics·Laser,2008,19(2):178-190

[4] [4] Gu Zhengtian,Xu Yanping,Deng Chuanlu. Dual-peak resonance and transmission spectrum in coated long-period fiber grating[J]. Acta Optica Sinica,2008,28(2):219-225

[5] [5] Zhao Hongxia,Bao Jilong,Chen Ying. Bending sensing rules for long-period fiber gratings[J]. Acta Optica Sinica,2008,28(9):1681-1685

[6] [6] J. H. Lim,H. S. Jang,H. S. Lee. Mach-Zehnder interferometer formed in a photonic crystal fiber based on a pair of long-period fiber gratings[J]. Opt. Lett.,2004,29(4):346-348

[7] [7] Rao Yunjiang,Wang Yiping,Zhu Tao. Theory and Applications of Fiber Gratings[M] .Beijing:Science Press,2006. 272-273

[8] [8] Wu Chongqing.Theory of Optical Waveguide[M]．Beijing:Tsinghua University Press,2005. 210-212