[1] [1] ROBERTS P J, MANGAN B J, SABERT H, et al. Control of dispersion in photonic crystal fibers[J].Journal of Optical and Fiber Communications Research, 2005, 2(5): 435-461.

[2] [2] MORTENSEN N A, NIELSEN M D, FOLKENBERG J R, et al. Improved large-mode-area endlessly single-mode photonic crystal fibers[J]. Optics Letters, 2002, 28(6): 393-395.

[3] [3] NIELSEN M, JACOBSEN C, MORTENSEN N, et al. Low-loss photonic crystal fibers for transmission systems and their dispersion properties.[J]. Optics Express, 2004, 12(7): 1372-1376.

[4] [4] LIAO M, YAN X, QIN G, et al. A highly non-linear tellurite microstructure fiber with multi-ring holes for supercontinuum generation[J]. Optics Express, 2009, 17(18): 15481.

[5] [5] ORTIGOSABLANCH A, KNIGHT J C, WADSWORTH W J, et al. Highly birefringent photonic crystal fibers[J]. Optics Letters, 2000, 25(18): 1325.

[6] [6] SAITOH K, KOSHIBA M, HASEGAWA T, et al. Chromatic dispersion control in photonic crystal fibers: application to ultra-flattened dispersion[J]. Optics Express, 2003, 11(8): 843-852.

[7] [7] ZHANG L, YANG C. A novel polarization splitter based on the photonic crystal fiber with nonidentical dual cores[J]. Photonics Technology Letters IEEE, 2004, 16(7): 1670-1672.

[8] [8] LIU S, LI S G, YIN G B, et al. A novel polarization splitter in ZnTe tellurite glass three-core photonic crystal fiber[J]. Optics Communications, 2012, 285(6): 1097-1102.

[9] [9] LIU Q, LI S G, FAN Z K, et al. Numerical analysis of ultrabroadband polarization splitter based on gold-filled dual-core photonic crystal fiber[J]. Optics Communications, 2015, 334: 46-50.

[10] [10] REN G, PING S, YU X, et al. Polarization dependent guiding in liquid crystal filled photonic crystal fibers[J]. Optics Communications, 2008, 281(6): 1598-1606.

[11] [11] EGGLETON B, KERBAGE C, WESTBROOK P, et al. Microstructured optical fiber devices[J]. Optics Express, 2001, 9(13): 698-713.

[12] [12] FAN Z, LI S, CHEN H, et al. Numerical analysis of polarization filter characteristics of D-shaped photonic crystal fiber based on surface plasmon resonance[J]. Plasmonics, 2015, 10(3): 675-680.

[13] [13] FAN Z, LI S, LIU Q, et al. Plasmonic polarization beam splitter based on dual-core photonic crystal fiber[J]. Plasmonics, 2015, 10(6): 1-7.

[14] [14] NAGASAKI A, SAITOH K, KOSHIBA M. Polarization characteristics of photonic crystal fibers selectively filled with metal wires into cladding air holes.[J]. Optics Express, 2011, 19(4): 3799-3808.

[15] [15] ZHANG S, YU X, ZHANG Y, et al. Theoretical study of dual-core photonic crystal fibers with metal wire[J]. IEEE Photonics Journal, 2012, 4(4): 1178-1187.

[16] [16] SUN B, CHEN M Y, ZHOU J, et al. Surface plasmon induced polarization splitting based on dual-core photonic crystal fiber with metal wire[J]. Plasmonics, 2013, 8(2): 1253-1258.

[17] [17] JIANG L, ZHENG Y, HOU L, et al. An ultrabraoadband polarization splitter based on square-lattice dual-core photonic crystal fiber with a gold wire[J]. Optics Communications, 2015, 351: 50-56.

[18] [18] LI P, ZHAO J. Polarization-dependent coupling in gold-filled dual-core photonic crystal fibers[J]. Optics Express, 2013, 21(5): 5232-5238.

[19] [19] FAN Z, LI S, LIU Q, et al. Plasmonic broadband polarization splitter based on dual-core photonic crystal fiber with elliptical metallic nanowires[J]. Plasmonics, 2016, 11(6): 1565-1572.

[20] [20] SAITOH K, SATO Y, KOSHIBA M. Coupling characteristics of dual-core photonic crystal fiber couplers[J]. Optics Express, 2003, 11(24): 3188-3195.

[21] [21] AN G, LI S, ZHANG W, et al. A polarization filter of gold-filled photonic crystal fiber with regular triangular and rectangular lattices[J]. Optics Communications, 2014, 331(22): 316-319.

[22] [22] FAN Z, LI S G, LI J, et al. Ultra-bandwidth polarization splitter based on soft glass dual-core photonic crystal fiber[J]. Optical Materials, 2015, 46: 384-388.

[23] [23] SUN B, CHEN M Y, ZHANG Y K, et al. Polarization-dependent coupling characteristics of metal-wire filled dual-core photonic crystal fiber[J]. Optical and Quantum Electronics, 2015, 47(2): 441-451.