Dual-wavelength THz wave modulator based on photonic crystal direct coupling

Song Lijun; Chen Heming; Zhao Xinyan; Wang Jingli

doi:10.13756/j.gtxyj.2012.04.005

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Dual-wavelength THz wave modulator based on photonic crystal direct coupling

- Dual-wavelength THz wave modulator based on photonic crystal direct coupling
- Study on Optical communication Issue 4, Pages: 42-44(2012)
- 作者机构：
  
  南京邮电大学光通信研究所
- 作者简介：
- 基金信息：
- DOI：10.13756/j.gtxyj.2012.04.005
  CLC： TN761
- Published：2012，
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[1]宋丽军,陈鹤鸣,赵新彦,汪静丽.光子晶体直接耦合结构双波长THz波调制器[J].光通信研究,2012(04):42-44.

Song Lijun, Chen Heming, Zhao Xinyan, et al. Dual-wavelength THz wave modulator based on photonic crystal direct coupling. [J]. (4):42-44(2012)
[1]宋丽军,陈鹤鸣,赵新彦,汪静丽.光子晶体直接耦合结构双波长THz波调制器[J].光通信研究,2012(04):42-44. DOI： 10.13756/j.gtxyj.2012.04.005.

Song Lijun, Chen Heming, Zhao Xinyan, et al. Dual-wavelength THz wave modulator based on photonic crystal direct coupling. [J]. (4):42-44(2012) DOI： 10.13756/j.gtxyj.2012.04.005.

摘要

THz波调制器是太赫兹波通信系统中的关键器件之一。提出了一种基于复式晶格光子晶体直接耦合结构的双波长THz波调制器。该调制器通过在一个点缺陷中引入非线性材料GaAs（砷化镓）

可实现仅通过一个点缺陷对双波长THz波的光控调制。仿真结果表明:当两个不同的THz波入射时

调制器插入损耗小、消光比高、调制速率快。与同类侧耦合结构调制器相比

该调制器具有更高的消光比。

Abstract

THz wave modulator is one of the key devices in THz wave communication systems.This paper proposes a novel dual-wavelength THz wave modulator based on the direct coupling of compound lattice photonic crystal.This modulator can realize the optical-control modulation of dual-wavelength THz waves via one point defect by introducing nonlinear material GaAs into only one point defect.The numerical simulation results show that for two different incident THz waves

this modulator has low insertion loss

high extinction ratio and high modulation rate.Compared with similar side-coupled modulators

the proposed modulator has higher extinction ratio.

关键词

复式晶格光子晶体直接耦合双波长太赫兹波调制器

Keywords

compound latticephotonic crystaldirect couplingdual-wavelengthTHz waveModulator

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