摘要 设计了一种铅硅酸盐SF57 材料的光子晶体光纤, 利用有限元法数值模拟了该光纤的 色散特性. 研究结果显示在整个透明波段光纤具有正常色散. 利用自适应分布傅里叶法求解非线性薛定谔方程, 对中心波长为1550 nm, 初始脉宽为150 fs 的脉冲在该光纤中传输进行了模拟, 获得了关于入射脉冲中心波长对称的展宽范围超过了600 nm 的超平坦连续光谱, 并且光谱具有极其稳定和 相干的特性. 关键词: 光子晶体光纤 / 超连续谱产生 / 正常色散 Abstract A kind of lead silicate photonic crystal fiber (PCF) is proposed in this paper. The dispersion characteristics of this SF57 PCF are studied by the finite element method. The reasults demonstrate that the PCF presents all-normal dispersion profiles in the visible and infrared spectral regions. We use an adaptive split-step Fourier method to study the propagations of the 1550 nm and 150 fs laser pulse in the PCF. The resulting spectral profiles are extremely flat from 1300 nm to 1900 nm and have excellent stabibities and coherence properties. Keywords: photonic crystal fiber / supercontinuum generation / normal dispersion 作者及机构信息 李曙光, 朱星平, 薛建荣 1. 燕山大学理学院, 亚稳材料制备技术与科学国家重点实验室, 秦皇岛 066004 基金项目: 国家自然科学基金(批准号: 61178026)和河北省自然科学基金重点项目(批准号: E2012203035)资助的课题. Authors and contacts Li Shu-Guang, Zhu Xing-Ping, Xue Jian-Rong 1. Key Laboratory of Metastable Materials Science and Technology, College of Science, Yanshan University, Qinhuangdao 066004, China Funds: Project supported by the National Natural Science Foundation of China (Grant No. 61178026) and the Key Program of the Natural Science Foundation of Hebei Province, China (Grant No. E2012203035). 参考文献 [1] Yan F P, Wang L, Mao X Q, Gong T R, Liu P, Tao P L, Peng W J 2010 Opt. Commun. 283 3658 [2] Li L L, Feng G Y, Yang H, Zhou G R, Zhou H, Zhu Q H, Wang J J, Zhou S H 2009 Acta Phys. Sin. 58 7005 (in Chinese) [李林栗, 冯国英, 杨浩, 周国瑞, 周昊, 朱启华, 王建军, 周寿桓 2009 物理学报 58 7005] [3] Yan H F, Yu Z Y, Tian H D, Liu Y M, Han L H 2010 Acta Phys. Sin. 59 3273 (in Chinese) [闫海峰, 俞重远, 田宏达, 刘玉敏, 韩利红 2010 物理学报 59 3273] [4] Harun S W, Akbari R, Arof H, Ahmad H 2011 Laser Phys. 21 1215 [5] Wang Y B, Xiong C L, Hou J, Lu Q S, Peng Y, Chen Z L 2011 Acta Phys. Sin. 60 014201 (in Chinese) [王彦斌, 熊春乐, 侯静, 陆启生, 彭杨, 陈子伦 2011 物理学报 60 014201] [6] Dudley J M, Genty G, and Coen S 2006 Rev. Mod. Phys. 78 1135 [7] Hilligsoe K M, Andersen T, Paulsen H, Nielsen C, Molmer K, Keiding S, Kristiansen R, Hansen K, Larsen J 2004 Opt. Express 12 1045 [8] Andresen E R, Paulsen H N, Birkedal V, Thφgersen J, Keiding S R 2005 J. Opt. Soc. Am. B 22 1934 [9] Zhu X P, Li S G, Du Y, Han Y, Zhang W Q, Ruan Y L, Ebendorff-Heidepriem H, Afshar H, Monro T M 2013 Chin. Phys. B 22 014215 [10] Heidt A M 2010 J. Opt. Soc. Am. B 27 550 [11] Falk P, Frosz M, Bang O 2005 Opt. Express 13 7535 [12] Heidt A M, Hartung A, Bosman G W, Krok P, Rohwer E G, Schwoerer H, Bartelt H 2011 Opt. Express 19 3775 [13] Hossain M A, Namihira Y, Razzak S M A, Islam M A, Liu J, Kaijage S F, Hirako Y 2012 Opt. Laser Technol. 44 976 [14] Jing Q, Ma H, Zhang X, Huang Y, Ren X 2012 Opt. Commun. 285 2917 [15] Kalashnikov V L, Sorokin E, Sorokina I T 2007 Appl. Phys. B 87 37 施引文献