基于光子晶体的粗波分-模分混合复用/解复用器的设计与性能分析
Received:June 15, 2017  Revised:September 15, 2017  点此下载全文
引用本文:
Hits: 184
Download times: 
Author NameAffiliationE-mail
JI Ke College of Electronic and Optical Engineering, Nanjing University of Posts and Telecommunications yourjk1991@163.com 
CHEN He-Ming Bell Honors School, Nanjing University of Posts and Telecommunications chhm@njupt.edu.cn 
基金项目:国家自然科学基金项目(面上项目,重点项目,重大项目)
中文摘要:数据业务飞速发展,导致IP网络融合的速度日益加快,所以对网络的扩容显得尤为重要,将粗波分复用与模分复用相结合可以成倍的提高系统容量和频谱效率。在粗波分模分系统中,粗波分-模分混合复用/解复用器是核心器件。本文提出了一种基于光子晶体的粗波分-模分混合复用/解复用器,在光子晶体上实现了波分-模分的一体集成,根据时域耦合模理论,该器件采用点缺陷微腔和波长选择反射微腔的结构实现滤波;根据横向耦合模理论,利用非对称平行波导的结构实现模式转换。应用时域有限差分法对其性能进行分析,仿真结果表明,该器件可以实现1550nmTE0模、1570nmTE0模、1550nmTE1模和1570nmTE1模四个信道信号的复用和解复用,并且具有较低的插入损耗(<0.23dB)和信道串扰(<-15.21dB),该器件在CWDM-MDM中有重要作用,对提升城域网的容量具有重要价值。
中文关键词:光子晶体,混合复用/解复用,光通信,耦合模理论
 
Design and performance analysis of the coarse wavelength-mode-division hybrid multiplexer/de-multiplexer
Abstract:The rapid development of data services, resulting in the increasing speed of IP network integration, so the capacity expansion of the network is particularly important. The combination of coarse-wavelength-division multiplexing and mode-division multiplexing can improve the capacity and spectral efficiency of the communication system. The coarse wavelength-mode-division hybrid multiplexer/de-multiplexer is the key device of the hybrid coarse wavelength-mode-division system. The coarse wavelength-mode-division hybrid multiplexer/de-multiplexer proposed in this paper is based on photonic crystals, coarse wavelength division multiplexing and mode division multiplexing were integrated on a chip. According to coupled mode theory in time, point-defect cavities and wavelength-selective cavities were introduced in the photonic crystals to filter the optical wave. According to the lateral coupled mode theory, asymmetric parallel waveguides consisted of single-mode waveguides and multi-mode waveguides were introduced in photonic crystals to achieve mode conversion. The performance analysis of the device is using the ?nite difference time domain method. The simulation results show that the device can achieve multiplexing and de-multiplexing of four channels (1550nmTE0, 1570nmTE0, 1550nmTE1 and 1570nmTE1), and the performance of the device is great with low insertion loss (<0.23dB) and crosstalk (<-15.21dB). The hybrid coarse wavelength-mode division multiplexer/de-multiplexer will have great application prospect in the CWDM-MDM system, and has great value to improve the capacity of metropolitan area network.
keywords:Photonic crystals, Hybrid multiplexer/de-multiplexer, Optical communication, Coupled-mode theory
  View/Add Comment  Download reader

Copyright:《Journal of Infrared And Millimeter Waves》