[1] [1] G B Ren, P Shum, L R Zhang, et al.. Low-loss all-solid photonic bandgap fiber [J]. Opt Lett, 2001, 32(9): 1023-1025.

[2] [2] Zhang Bin, Hou Jing, Jiang Zongfu. Controllable high-power supercontinuum generation in all-solid photonic bandgap fibers [J]. Acta Optica Sinica, 2010, 30(9): 2513-2518.

[3] [3] R F Cregan, B J Mangan, J C Knight, et al.. Single-mode photonic band gap guidance of light in air [J]. Science, 1999, 285(5433): 1537-1539.

[4] [4] R A Correa, F Gerome, S G Leon-Saval, et al.. Control of surface modes in low loss hollow-core photonic bandgap fibers [J]. Opt Express, 2008, 16(2): 1142-1149.

[5] [5] Meng Dan, Hou Lantian, Wang Wei. Analysis on the properties of all-solid photonic crystal fiber with micro-structured core [J]. Chinese J Lasers, 2011, 38(12): 1205003.

[6] [6] Y P Wang. Review of long period gratings written by CO2 laser [J]. J Appl Phys, 2010, 108(8): 4-5.

[7] [7] N Guan, S Habu, K Takenaga, et al.. Boundary element method for analysis of holey optical fibers [J]. J Lightwave Technol, 2003, 21(8): 1787-1789.

[8] [8] 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.

[9] [9] T Erdogan. Fiber grating spectra [J]. J Lightwave Technol, 1997, 15(8): 1277-1294.

[10] [10] 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.

[11] [11] Zhou Guiyao, Hou Zhiyun, 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.

[12] [12] Zhang Hu, Wang Qiuguo, Yang Bojun. Research process of photonic bandgap-photonic crystal fibers [J]. Semiconductor Optoelectronics, 2007, 28(3): 301-305.

[13] [13] Chen Weiguo, Lou Shuqin, Wang Liwen, et al.. Properties of long period gratings in photonic crystal fibers [J]. Chinese J Lasers, 2009, 36(3): 699-704.