[1] [1] Luo Tao, Gu Zhengtian. Progress of biological and chemical sensors based on long period grating in photonic crystal fiber［J］. Laser and Optoelectronics Progress, 2009, 46(11): 34～40

[2] [2] Chen Peng, Wang Rong, Pu Tao et al.. Double band En/Decoder based on super struetured fiber Bragg gratings［J］. Chinese J. Lasers, 2009, 36(5): 1124～1128

[3] [3] W. J. Bock, J. Chen, P. Mikulic et al.. Pressure sensing using periodically tapered long-period gratings written in photonic crystal fibres［J］. Meas. Sci. Technol., 2007, 18(10): 3098～3102

[4] [4] Y. Zhu, P. Shum, J. H. Chong et al.. Deep-notch, ultracompact long-period grating in a large-mode-area photonic crystal fiber［J］. Opt. Lett., 2003, 28(24): 2467～2469

[5] [5] Wang Yiping. Review of long period fiber gratings written by CO2 laser［J］. J. Appl. Phys., 2010, 108(8): 081101

[6] [6] Qi Yuefeng, Qiao Hanping, Bi Weihong. Study of heat transfer characteristics in PCFG fabrication technology using heat method［J］. Chin. Opt. Lett., 2011, 9(2): 020605

[7] [7] Zhou Zhihua, Wang Zhi, Xie Ping et al.. Long-period gratings inscribed in photonic crystal fibers［J］. Laser and Optoelectronics Progress, 2005, 42(8): 41～44

[8] [8] T. Erdogan. Fiber grating spectra［J］. J. Lightwave Technol., 1997, 15(8): 1277～1294

[9] [9] Li Qingning. Coupled-local-mode theory and study of optical properties of a Gaussian fiber grating［J］. J. Opt. Soc. Am. A, 1999, 16(6): 1312～1325

[10] [10] L. Jin, W. Jin, J. Ju et al.. Coupled local-mode theory for strongly modulated long period gratings［J］. J. Lightwave Technol., 2010, 28(12): 1745～1751

[11] [11] Fu Guangwei, Bi Weihong, Jin Wa. Mechanics characteristic of air-hole in fusion splicing process for photonic crystal fiber［J］. Chinese J. Lasers, 2009, 36(11): 2966～2971

[12] [12] Zhou Guiyao, Hou Shiyun, Li Shuguang et al.. Analysis of the shrinkage in size of air holes in different sections during the fabrication of microstructured fibre［J］. Acta Physica Sinica, 2007, 56(11): 6486～6489

[13] [13] Qi Yuefeng, Bi Weihong. Theroretical study on a kind of photonic crystal fiber grating based on structural change［J］. Acta Optica Sinica, 2011, 31(1): 0106003

[14] [14] Hu Minglie, Wang Qingyue, Li Yanfeng. Analysis of the microstructure fiber by the finite element method［J］. Chinese J. Lasers, 2004, 31(11): 1337～1342

[15] [15] Zhang Fangdi, Liu Xiaoyi, Zhang Min et al.. A full-vector FEM model and its application to optical waveguides and photonic crystal fibers［J］. Acta Photonica Sinica, 2007, 36(2): 209～215