文档介绍：fll— Y2306941 论文题目:光子晶体光纤的双模色散平坦特性分析专业:无线电物理硕士生:张蕾签名:乏坠垄. 指导教师:冀玉领签名:鉴五碰摘要光子晶体光纤是建立在光子晶体技术基础之上发展起来的一种新型传输光纤,它的设计自由度较大,与传统光纤相比有很多的优越性,如:高双折射、大模面积、短波长零色散、无截止波长单模传输特性、高非线性效应等。这使得光子晶体光纤在超快激光和光通信等领域具有重要的学术价值和广阔的应用前景。当前,对光子晶体光纤的色散研究主要集中在一个空气孔缺陷的纤芯上,对七个空气孔缺陷的纤芯结构的光子晶体光纤研究很少。本文采用有效折射率模型计算方法,利用计算机MATLAB语言对光子晶体光纤的包层有效折射率、传播常数、有效归一化频率以及色散系数进行了理论模拟,着重分析了几个影响它们变化的结构参数。并通过合理设定光子晶体光纤的结构参数,分别在0波段和S、C波段设计出了满足双模色散平坦的七孔缺陷纤芯结构的光子晶体光纤。【关键词】光子晶体光纤等效折射率大纤芯双模色散平坦【论文类型】理论 Abstract Title:The Flatness Characteristics Analysis of Double-mode Dispersion inPhotonic Crystal Fiber Major:Radio Physics Name:Zhang Lei Supervisor:Ji Yuling Abstract Signature: Signature: Photonic crystal fiber IPCF)is anew kind oftransmission fiber was developed on the foundation of photonic crystal itsgreater and designal degrees offreedom,it owns more pared with the traditional optical fiber, such as High Birefringence,Large Mode Area,the Zero dispersion after Short Wavelength,the Endless single mode property,High Optical nonlinear and SO made Photonic crystal fiber own important academic value and broad application prospect inthe field munications and ultrafast Iasers and SO on. At present,the dispersion research of Photonic crystal fiber is mainly concentrated on the PCF of the fiber core with an air hole defect,and also seldom on the PCF of the fiber core with seven air hole paper has adopted the model calculation method of effective refractive index,while made theoretical simulation on the cladding effective index of photonic crystal fiber,the propagation constant,the effective normalized frequency,and as well as on dispersion coefficient by using puter language program of MATLAB,meanwhile,and which puts emphasis on the analysis of 山西师范大学学位论文 several structural parameters which should be influenced by their changing·Finally,by changing the structural parameters of photonic crystal fiber,we worked out the photonic crystal fiber which meets the needs ofboth fundamental modeI and