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高效光子晶体太赫兹滤波器的设计
引用本文:陈鹤鸣,孟晴.高效光子晶体太赫兹滤波器的设计[J].物理学报,2011,60(1):14202-014202.
作者姓名:陈鹤鸣  孟晴
作者单位:南京邮电大学光通信研究所,南京 210003
基金项目:南京邮电大学科研基金(批准号:NY207053),国家重点基础研究发展计划(973计划)(批准号:2009CB930600)和国家自然科学基金(批准号:61077084)资助的课题.
摘    要:提出了一种新型光子晶体太赫兹(THz)滤波器,该滤波器包括利用线缺陷实现的波导部分和利用微腔实现的频率选择部分.应用平面波法(PWM)分析其带隙结构,然后应用时域有限差分法(FDTD),研究THz波在此滤波器中的传输特性,结果表明,通过改变点缺陷的结构和增大某些介质柱的半径,可以使该滤波器实现高耦合效率的单信道单频率滤波. 关键词: 光子晶体 THz波 平面波法 时域有限差分法

关 键 词:光子晶体  THz波  平面波法  时域有限差分法
收稿时间:2009-12-08
修稿时间:4/5/2010 12:00:00 AM

Design of high efficiency photonic crystal terahertz filter
Chen He-Ming,Meng Qing.Design of high efficiency photonic crystal terahertz filter[J].Acta Physica Sinica,2011,60(1):14202-014202.
Authors:Chen He-Ming  Meng Qing
Institution:Institute of Optical Communications, Nanjing University of Posts and Telecommunications, Nanjing 210003, China;Institute of Optical Communications, Nanjing University of Posts and Telecommunications, Nanjing 210003, China
Abstract:A new type of terahertz photonic crystal filter is presented, which includes the waveguide parts realized by line defects, and the frequency selection parts realized by micro cavities. The band gap property was investigated by using plane wave method (PWM), and then the transmission characteristic of terahertz in this kind of filter was studied by means of the finite difference time domain method (FDTD) simulation. The results show that, the filter can achieve high coupling efficiency filtering of single-channel and single-frequency, by changing the point defects structure and increasing the radius of certain dielectric cylinder. High efficiency THz-band photonic crystal filter was designed in this thesis.
Keywords:photonic crystal  THz waves  PWM  FDTD
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