Study on dual-wavelength THz filters with combination resonators

Ge Xiaoheng; Chen Heming

doi:10.13756/j.gtxyj.2014.04.018

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Study on dual-wavelength THz filters with combination resonators

- Study on dual-wavelength THz filters with combination resonators
- Study on Optical communication Issue 4, Pages: 58-60(2014)
- 作者机构：
  
  南京邮电大学光电工程学院
- 作者简介：
- 基金信息：
- DOI：10.13756/j.gtxyj.2014.04.018
  CLC： TN713
- Published：2014，
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[1]戈晓恒,陈鹤鸣.组合谐振腔的双波长THz滤波器的研究[J].光通信研究,2014(04):58-60.

Ge Xiaoheng, Chen Heming. Study on dual-wavelength THz filters with combination resonators. [J]. (4):58-60(2014)
[1]戈晓恒,陈鹤鸣.组合谐振腔的双波长THz滤波器的研究[J].光通信研究,2014(04):58-60. DOI： 10.13756/j.gtxyj.2014.04.018.

Ge Xiaoheng, Chen Heming. Study on dual-wavelength THz filters with combination resonators. [J]. (4):58-60(2014) DOI： 10.13756/j.gtxyj.2014.04.018.

摘要

提出一种新型的光子晶体双波长THz滤波器

该滤波器由正方晶格光子晶体中3个点缺陷优化组合的谐振腔和线缺陷构成

可以实现双波长下载功能。利用FDTD（有限差分时域）法研究了两束光波在滤波器中的传输特性

仿真计算了对应的透射谱和时域响应图。仿真结果表明

该新型滤波器能够实现单信道双波长滤波功能

并且具有谐振腔品质因子Q值大、滤波带宽窄、损耗低、稳态响应时间快和体积小易于系统集成等优点。

Abstract

This paper proposes a novel photonic crystal-based dual-wavelength THz filter.Consisting of a resonator that is the optimized combination of three point defects in a square lattice photonic crystal and line defects

this resonator can realize dualwavelength THz downloading function.It investigates the transmission characteristics of two beams of optical wave in the filter

using the Finite-Difference Time-Domain（FDTD）method

and simulates the corresponding transmission spectrum and time domain response graph.Simulation results show that this filter can perform single-channel dual-wavelength filtering functions and has such advantages as large quality factor Qvalue of a resonator

narrow filtering bandwidth

small loss

fast steady response time

small volume and easy system integration.

关键词

光子晶体太赫兹波组合谐振腔滤波器有限差分时域法

Keywords

photonic crystalTHz wavecombination resonatorfilterFDTD method

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Key Laboratory of All Optical Network and Advanced Telecommunication Network, Ministry of Education, Institute of Lightwave Technology, Beijng Jiaotong University

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