基于光通信波段的几种石英基光子晶体光纤的优化设计

发布时间：2018-06-02 23:03

本文选题：光子晶体光纤 + 有限元法　；参考：《燕山大学》2015年硕士论文

【摘要】：光子晶体光纤由于其灵活的结构设计和独特的导光原理在光通信光电子器件领域引起了人们的极大兴趣,通过对光子晶体光纤的结构进行设计或者在其包层气孔中填充金属等其它物质,不仅优化了光子晶体光纤的性能而且可以极大地拓展其应用范围。石英玻璃是一种在光通信波段具有极低损耗而且易于拉制成特种光纤的材料,本文利用有限元法设计了三种石英基空气孔矩形排列光子晶体光纤,这些光纤在光通信波段具有优异的性能,有望为研制新型光子器件提供一定的借鉴或理论指导。论文主要研究内容如下:首先,综述了光子晶体光纤的基础理论、制备方法、基本特性及其研究现状和应用前景。其次,从麦克斯韦方程组出发,分析了光在光子晶体光纤中传输的波导理论和数值模拟方法。设计了一种具有椭圆气孔且气孔呈矩形排列的光子晶体光纤,数值模拟并分析了其双折射及色散特性,通过结构参数调节,将其零色散波长调节到了光通信波段并且得到了较高的双折射度。再次,设计了一种包层气孔矩形排列的选择性金填充光子晶体光纤。介绍了在此种金属填充光纤中表面等离子体激发的原理,并通过参数调节在通信波段得到了良好的偏振滤波特性。最后,设计了一种气孔矩形排列的单偏振单模光子晶体光纤。利用有限元法对其进行了数值模拟,通过参数调节,在光通信的低损耗波长1.55μm处获得了较好的单偏振单模操作特性。
[Abstract]:Photonic crystal fiber (PCF) has attracted great interest in the field of optoelectronic devices for optical communication because of its flexible structure design and unique light-guiding principle. By designing the structure of photonic crystal fiber (PCF) or filling its cladding hole with metal and other materials, the performance of PCF can be optimized and its application scope can be greatly expanded. Quartz glass is a kind of material with very low loss in optical communication band and easy to pull to make special optical fiber. In this paper, three kinds of rectangular arrangement photonic crystal fibers with quartz air holes are designed by using finite element method. These optical fibers have excellent performance in optical communication band, which is expected to provide some reference or theoretical guidance for the development of new photonic devices. The main contents of this paper are as follows: firstly, the basic theory, preparation method, basic characteristics, research status and application prospect of photonic crystal fiber are reviewed. Secondly, based on Maxwell's equations, the waveguide theory and numerical simulation method of optical propagation in photonic crystal fiber are analyzed. A photonic crystal fiber with elliptical pores and rectangular arrangement is designed. The birefringence and dispersion characteristics of photonic crystal fiber are numerically simulated and analyzed. The zero dispersion wavelength is adjusted to the optical communication band and the birefringence is obtained. Thirdly, a selective gold filled photonic crystal fiber is designed. The principle of surface plasma excitation in the metal-filled fiber is introduced, and good polarization filtering characteristics are obtained in the communication band by adjusting the parameters. Finally, a single polarization single mode photonic crystal fiber with a rectangular pore array is designed. The finite element method is used to simulate it. By adjusting the parameters, a better single-polarization single-mode operation characteristic is obtained at the low loss wavelength of 1.55 渭 m for optical communication.
【学位授予单位】：燕山大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TN253

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