基于光子晶体环形腔可重构光分插复用器的设计及其性能分析

发布时间：2018-05-10 16:47

本文选题：时域有限差分法 + 环形腔　；参考：《南京邮电大学》2016年硕士论文

【摘要】：随着光通信技术的发展,新业务不断涌现,推动光网络发生了根本的变化。波分复用光网络正向着具有光交换、光路由以及智能波长分配功能的全光网络方向发展。可重构分插复用器作为全光网络中的关键节点器件逐渐成为光通信领域研究的热点。光子晶体是一种新型材料,具有极强的控制光的能力,而且体积小、易于集成,已被广泛用于设计制作光滤波器、光调制器和光开光等光通信器件。光子晶体为设计结构紧凑的高集成化可重构光分插复用器提供了一条新途径,研究基于光子晶体的可重构光分插复用器对未来全光网络的发展具有重要意义。本文提出了一种基于光子晶体环形腔的光分插复用器。该光分插复用器采用正方晶格光子晶体结构,由线缺陷与环形腔组成,利用环形腔的频率选择功能实现了对特定频率光波的下载以及上载功能,通过线缺陷与环形腔的耦合实现光分插复用。应用基于时域有限差分法的Rsoft软件对其性能进行了分析,结果表明该器件上下载率高,插入损耗小,信道隔离度高。在此基础上,提出了一种基于光子晶体单环形腔的电控液晶可重构光分插复用器。该光分插复用器采用正方晶格光子晶体结构。在内部9个正方形介质柱里面填充苯乙炔(Phenylacetylene)液晶,通过电控液晶来实现六个波长的上下载。应用Rsoft软件对其性能进行了分析,结果表明该器件上下载率高、插入损耗小、信道隔离度高。为了提高波长重构灵活性,本文设计了一种基于光子晶体双环形腔的电控液晶可重构光分插复用器。仿真结果表明,这种调谐型可重构光分插复用器可以实现工作波长在1534.9nm-1549.5 nm之间重新配置,具有插入损耗低和信道隔离度高的优点。本文设计的可重构光分插复用器在波分复用全光网络中具有实用价值。
[Abstract]:With the development of optical communication technology, new services are emerging, which promote the fundamental change of optical network. Wavelength division multiplexing (WDM) optical networks are developing towards all-optical networks with optical switching, optical routing and intelligent wavelength assignment. As a key node device in all optical networks, reconfigurable add-drop multiplexer has gradually become a hot topic in the field of optical communication. Photonic crystal is a new material, which has the ability of controlling light, and is small and easy to integrate. It has been widely used in the design and manufacture of optical filters, modulators and optical communication devices. Photonic crystals provide a new way to design a compact, highly integrated reconfigurable optical add / drop multiplexer. It is of great significance to study the photonic crystal based reconfigurable optical add / drop multiplexer for the development of all optical networks in the future. In this paper, a photonic crystal ring cavity based optical add-in multiplexer is proposed. The optical add / drop multiplexer uses square lattice photonic crystal structure, which is composed of linear defects and ring cavity. The function of downloading and uploading optical waves at specific frequencies is realized by using the frequency selection function of ring cavity. Optical demultiplexing is realized by coupling linear defect and ring cavity. The Rsoft software based on FDTD method is used to analyze its performance. The results show that the device has high download rate, low insertion loss and high channel isolation. On the basis of this, a reconfigurable optical demultiplexer based on photonic crystal single ring cavity is proposed. The optical demultiplexer adopts square lattice photonic crystal structure. Phenylacetylene) liquid crystal was filled into the inner 9 square dielectric columns and downloaded at six wavelengths by electrically controlled liquid crystal. The performance of the device is analyzed by using Rsoft software. The results show that the device has high download rate, low insertion loss and high channel isolation. In order to improve the flexibility of wavelength reconstruction, an electrically controlled liquid crystal reconfigurable optical demultiplexer based on photonic crystal double ring cavity is designed. The simulation results show that the tunable reconfigurable optical demultiplexer can reconfigure the working wavelength between 1534.9nm-1549.5 nm and has the advantages of low insertion loss and high channel isolation. The reconfigurable optical add / drop multiplexer designed in this paper has practical value in wavelength division multiplexing (WDM) all optical networks.
【学位授予单位】：南京邮电大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TN929.1

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