S+C+L波段色散斜率补偿光子准晶体光纤(英文)
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摘要
针对光纤通信中的色散补偿,尤其是密集波分复用系统的多信道同时补偿的需求,提出了一种用于宽带色散斜率补偿的光子准晶体光纤.该光纤结构包层空气孔为准晶体排列,并且在纤芯引入了中心缺陷.通过对光纤特性的数值分析表明,在1 460~1 625nm的光通信波段,该结构光纤的相对色散斜率为0.004 4~0.002 9nm-1,相对色散斜率与标准单模光纤近似相等,且负色散值达-2 476ps·nm-1·km-1.对标准单模光纤进行色散补偿后,在S+C+L波段色散值为(-0.5~0)ps·nm-1·km-1.该光纤可用于对当前光纤通信系统进行宽带色散补偿,实现多信道同时补偿,简化结构,并降低补偿成本.
For multi-channel dispersion compensation in dense wavelength division multiplexing(DWDM)systems optical communication networks,a broadband dispersion slope compensating photonic quasi-crystal fiber(PQF)is proposed.The PQF has a six-fold symmetric quasi-periodic array of air holes in cladding and a high index rob in the concentric core.The simulating results of the dispersion slope and dispersion of PQF reveal that the relative dispersion slope(RDS)can reach a low value 0.004 4nm-1 to 0.002 9nm-1 that is equal to the standard single mode fiber(SMF)over S+C+L band approximately;the PQF can achieve dispersion slope compensation effectively,while obtain a larger negative dispersion coefficient of-2 476ps·nm-1·km-1 over optical communication band 1 460nm to 1 625nm.The value of dispersion compensation result is(-0.5~0)ps·nm-1·km-1 to the SMF in the S+C+L band.The designed PQF can achieve multi-channel dispersion compensation,simplify the structure and reduce compensation costs,and then it can be used for wide-band dispersion slope compensation.
For multi-channel dispersion compensation in dense wavelength division multiplexing(DWDM)systems optical communication networks,a broadband dispersion slope compensating photonic quasi-crystal fiber(PQF)is proposed.The PQF has a six-fold symmetric quasi-periodic array of air holes in cladding and a high index rob in the concentric core.The simulating results of the dispersion slope and dispersion of PQF reveal that the relative dispersion slope(RDS)can reach a low value 0.004 4nm-1 to 0.002 9nm-1 that is equal to the standard single mode fiber(SMF)over S+C+L band approximately;the PQF can achieve dispersion slope compensation effectively,while obtain a larger negative dispersion coefficient of-2 476ps·nm-1·km-1 over optical communication band 1 460nm to 1 625nm.The value of dispersion compensation result is(-0.5~0)ps·nm-1·km-1 to the SMF in the S+C+L band.The designed PQF can achieve multi-channel dispersion compensation,simplify the structure and reduce compensation costs,and then it can be used for wide-band dispersion slope compensation.
引文
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[2]HE Zhong-jiao.Rectangular-hole photonic crystal fibers[J].Acta Photonica Sinica,2011,40(4):583-586.
[3]BIRKS T A,KNIGHT J C,MANGAN B J,et al.Photonic crystal fibers:an endless variety[J].IEICE Transactions on Electronics,2001,84(5):585-592.
[4]KNIGHT J C.Photonic crystal fibers[J].Nature,2003,424(14):847-851.
[5]FANG Liang,ZHAO Jian-lin,GAN Xue-tao,et al.Generation and control supercontinuum in photonic crystal fiber with two-zero dispersion wavelengths[J].Acta Photonica Sinica,2010,39(11):1921-1927.
[6]LIU Yong-xing,ZHANG Pei-qing,XU Yin-sheng,et al.Dispersion properties of Ge20Sb15Se65chalcogenide glass photonic crystal fiber for mid-IR region[J].Acta Photonica Sinica,2012,41(5):516-521.
[7]WU Ming,HUANG De-xiu,et al.Broadband dispersion compensating fiber using index-guiding photonic crystal fiber with defected core[J].Chinese Physics Letters,2008,6(1):22-24.
[8]YANG Si-gang,ZHANG Ye-jin,HE Lin-da et al.Broadband dispersion-compensating photonic crystal fiber[J].Optics Letters,2006,31(19):2830-2832.
[9]BEGUM F,NAMHIRA Y,RAZZAK S M A,et al.Novel broadband dispersion compensating photonic crystal fibers:applications in high-speed transmission systems[J].Optics&Laser Technology,2009,41(6):679-686.
[10]KIM S,KEE C S,LEE J.Novel optical properties of six-fold symmetric photonic quasi-crystal fibers[J].Optics Express,2007,15(20):13211-13226.
[11]KIM S,KEE C S.Dispersion properties of dual-core photonic quasi-crystal fiber[J].Optics Express,2009,17(18):15885-15890.
[12]HASEGAVA T,NAGASHIMA T,SUGIMOTO N.Determination of nonlinear coefficient and group-velocitydispersion of bismuth-based high nonlinear optical fiber by four-wave-mixing[J].Optics Communications,2008,281(4):782-787.
[13]FLEMING J W.Dispersion in GeO2-SiO2glasses[J].Applied Optics,1984,23(24):4486-4493.
[14]SAITOH K,KOSHIBA M,et al.Leakage loss and group velocity dispersion in air-core photonic bandgap fibers[J].Optics Express,2003,11(23):3100-3109.
[15]AGRAWAL G P.Nonlinear fiber optics and application of nonlinear fiber optics[M].JIA Dong-fang,YU Zhen-hong,TAN Bin,et al,transl.Beijing:Publishing House of Electronics Industry,2002:58-59.
[16]LI Hong-lei,LOU Shu-qin,GUO Tie-ying,et al.Low loss fusion splicing of germanium doped core photonic crystal fiber and standard single mode fiber[J].Chinese Journal of Lasers,2010,37(6):1589-1593.