[1] SAITOH K, KOSHIBA M. Numerical modeling of photonic crystal fibers[J]. Journal of Lightwave Technology, 2005, 23(11): 3580-3590.
[2] JAN D, LIU M, HE D, et al. Research of photonic crystal fiber with high nonlinear flattened dispersion property[J]. Laser Technology,2013, 37(2):187-190(in Chinese).
[3] LIAO Zh Y, LIU M, QIAN Y, et al. Octagonal dispersion compensation fiber[J]. Laser Technology,2013, 37(4):506-510(in Chinese).
[4] LING F, GAN X S,GU M. Nonlinear optical microscope based on double-clad photonic crystal fibers[J]. Optics Express, 2005, 13(14):5528-5534.
[5] LIMPERT J, SCHREIBER T, NOLTE S, et al. High-power air-clad large-mode-area photonic crystal fiber laser[J]. Optics Express, 2003, 11(7): 818-823.
[6] BERGH R A, KOTLER G, SHAW H J. Single-mode fibre optic directional coupler[J]. Electronics Letters, 1980, 16(7): 260-261.
[7] YANG S. Directional pattern of a cross vector sensor array [J]. The Journal of the Acoustical Society of America, 2012, 131(4): 3484-3489.
[8] WADSWORTH W, PERCIVAL R, BOUWMANS G, et al. High power air-clad photonic crystal fibre laser[J]. Optics Express, 2003, 11(1): 48-53.
[9] LIU M, CHIANG K S. Propagationof ultrashortpulsesin a nonlinear two-core photonic crystal fiber[J]. Applied Physics, 2010, B98(4): 815-820.
[10] LIU M, CHIANG K S. Two-core photonic crystal fiber with zero intermodal dispersion[J]. Optics Communications, 2012,293(15):49-53.
[11] LI D, LIU M, JIAN D, et al.Study on characteristics of highly birefringent dual-core photonic crystal fibers [J].Chinese Journal of Lasers, 2012,39(4):106-110(in Chinese).
[12] LIU M, CHIANG K S. Nonlinear switching of ultrashort pulses in multicore fibers[J]. Quantum Electronics, 2011, 47(12): 1499-1505(in Chinese).
[13] YI Ch Sh, ZHANG P Q,DAI Sh X, et al. Research progress of large-mode area photonic crystal fibers[J].Laser Optoelectronics Progress,2012(10):1-11(in Chinese).
[14] CHEO P K, KING G G, HUO Y. Recent advances in high-power and high-energy multicore fiber lasers[J].Proceedings of the SPIE, 2004,5335:106-115.
[15] FANG X H, CHAI L, HU M L, et al. Numerical analysis for structure optimization of seven-core photonic crystal fibers[J].Acta Physica Sinica,2009,58(4):2495-2500 (in Chinese).
[16] MA L F, LIU M, LI D, et al. A kind of hollow dual-core photonic crystal fiber with zero inter-modal dispersion[J].Chinese Journal of Lasers, 2012, 39(8): 129-134 (in Chinese).
[17] GENG P Ch. Research on seven-core and bandgap Yb-doped photonic crystal fibers.Qinhuangdao:Yanshan University,2010:21-25 (in Chinese).