Design and characteristics of negative dispersion of two layered five ring photonic crystal fiber

2015 International Conference on Signal Processing and Communication (ICSC) Pub Date : 2015-03-16 DOI:10.1109/ICSPCOM.2015.7150672

Shahiruddin, Vithika Singh, Priya Jayaswal, Richa Khaklari, D. Singh

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Abstract

A numerical finite element method (FEM) based analysis of mode profile, dispersion characteristics and birefringence of two layered five rings photonic crystal fiber for different air fill fraction d/Λ (0.6-0.9) is proposed. The proposed structure consists of two inner hexagonal layers and outer three circular layers. The inner hexagonal layers consist of air holes each of diameter d1. Two circular layers surrounding the hexagonal layers have air holes of diameter d2 while the outer most circular layer has air holes of diameter d3. The proposed structure is shown to possess an optimum mode profile. The effective refractive index of the cladding depends on the air-fill fraction of the fiber. Refractive index decreases with increasing air-fill fraction for the same wavelength. It is shown that the negative dispersion coefficient can be controlled by the pitch Λ and the diameter of air holes. Also shown is the linear relation of Birefringence with bit rate. The corresponding graphs of all the parameters are evaluated and plotted. The proposed structure is simulated using the commercial Rsoft software.

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两层五环光子晶体光纤负色散的设计与特性

提出了一种基于数值有限元法分析两层五环光子晶体光纤在不同空气填充率d/Λ(0.6 ~ 0.9)下的模式分布、色散特性和双折射特性的方法。所提出的结构由两个内部六角形层和三个外部圆形层组成。内六角形层由直径为d1的气孔组成。六边形层周围的两个圆形层具有直径为d2的气孔，而最外层的圆形层具有直径为d3的气孔。所提出的结构具有最佳模态轮廓。包层的有效折射率取决于光纤的空气填充率。在相同波长下，折射率随空气填充率的增加而减小。结果表明，负色散系数可由螺距Λ和气孔直径控制。同时给出了双折射随比特率的线性关系。计算并绘制了各参数的对应图。采用商用Rsoft软件对所提出的结构进行了仿真。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2015 International Conference on Signal Processing and Communication (ICSC)

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