[1] [1] Gu Zhengtian, Deng Chuanlu. Application and development of coated fiber grating［J］. Chinese J Lasers, 2009, 36(6): 1317-1326.

[2] [2] B J Eggleton, P S Westbrook, R S Windeler, et al.. Grating resonances in air-silica microstructured optical fibers［J］. Opt Lett, 1999, 24(21): 1460-1462.

[3] [3] Tu Qinchang, Zhang Weigang, Jin Long, et al.. Recent progress on imprinting technologies of photonic crystal fiber gratings［J］. Laser & Optoelectronics Progress, 2005, 42(4): 42-47.

[4] [4] J Petrovic, T Allsop. Scattering of the laser writing beam in photonic crystal fiber［J］. Optics & Laser Technology, 2010, 42(7): 1172-1175.

[5] [5] H R Sorensen, J Canning, J Laegsaard, et al.. Liquid filling of photonic crystal fibers for grating writing[J]. Opt Commun, 2007, 270(2): 207-210.

[6] [6] G D Marshall, D J Kan, A A Asatryan, et al.. Transverse coupling to the core of a photonic crystal fiber: the photo-inscription of gratings［J］. Opt Express, 2007, 15(12): 7876-7887.

[7] [7] S J Mihailov, D Grobnic, C W Smelser, et al.. Induced Bragg gratings in optical fibers and waveguides using an ultrafast infrared laser and a phase mask［J］. Laser Chemistry, 2008 (2008), Article ID 416251.

[8] [8] T Baghdasaryan, T Geernaert, F Berghmans, et al.. Geometrical study of a hexagonal lattice photonic crystal fiber for efficient femtosecond laser grating inscription［J］. Opt Express, 2011, 19(8): 7705-7716.

[9] [9] Jin Wei, Ruan Shuangchen. The New Progress of Optical Fiber Sensing Technology［M］. Beijing: Science Press, 2005.

[10] [10] M J Weber. Hand Book of Optical Materials［M］. Boca Raton: CRC Press LLC, 2003.