Terahertz Single-Polarization Single-Mode Photonic Crystal Fiber based on Structural Adjustment Method

WANG Jing-li; LU Chi

doi:10.13756/j.gtxyj.2018.04.005

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Terahertz Single-Polarization Single-Mode Photonic Crystal Fiber based on Structural Adjustment Method

- Terahertz Single-Polarization Single-Mode Photonic Crystal Fiber based on Structural Adjustment Method
- Study on Optical communication Issue 4, Pages: 18-21(2018)
- 作者机构：
  
  南京邮电大学电子与光学工程学院微电子学院
- 作者简介：
- 基金信息：
- DOI：10.13756/j.gtxyj.2018.04.005
  CLC： TN253
- Published：2018，
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[1]汪静丽,陆驰.基于结构调整实现单模单偏振太赫兹PCF[J].光通信研究,2018(04):18-21+73.

WANG Jing-li, LU Chi. Terahertz Single-Polarization Single-Mode Photonic Crystal Fiber based on Structural Adjustment Method. [J]. (4):18-21(2018)
[1]汪静丽,陆驰.基于结构调整实现单模单偏振太赫兹PCF[J].光通信研究,2018(04):18-21+73. DOI： 10.13756/j.gtxyj.2018.04.005.

WANG Jing-li, LU Chi. Terahertz Single-Polarization Single-Mode Photonic Crystal Fiber based on Structural Adjustment Method. [J]. (4):18-21(2018) DOI： 10.13756/j.gtxyj.2018.04.005.

摘要

文章提出一种光子晶体光纤（PCF）

通过调整结构

改变包层缺陷中微型空气孔的排列方式、孔大小和孔孔间隔实现折射率匹配耦合

达到单模单偏振传输的目的。采用全矢量有限元法仿真建模

结果表明

当包层缺陷中微型空气孔直径为27.7μm、孔孔间隔为38μm

且采用三角晶格排列时

在0.719

THz范围内

偏振损耗比

100

实现了单模单偏振传输

此时y偏振基模的传输损耗最低为2.4e-3 dB/km。与填充法实现折射率匹配耦合相比

调整结构可以获得更大的偏振损耗比479

更低的传输损耗2.4e-3 dB/km以及更宽的带宽0.281THz。

Abstract

In this paper

a kind of THz single-polarization single-mode PCF is proposed.The dependence of refractive index matching coupling on several parameters（diameter of the micro air holes d3

lattice constantΛ3

lattice shapes in cladding）are investigated with a full-vector Finite Element Method（FEM）.Simulation results show that the best-optimized parameters of fiber are supposed to be d3 =27.7μm

Λ3=38μm and triangular lattice.The fiber exhibits large polarization-dependent loss ratio（>100）and wide bandwidth（0.281 THz）.The polarization-dependent loss ratio will be larger than 100 when the frequency is higher than 0.719 THz

and single-polarization single-mode transmission is realized.At the frequency of 0.95 THz

the polarization-dependent loss ratio reaches the maximum of 479 and the confinement loss is 2.4 e-3 dB/km.Compared with the liquid filling method

the structural adjustment method achieves larger polarization-dependent loss radio

lower confinement loss

and wider bandwidth.

关键词

光子晶体光纤太赫兹单模单偏振结构调整

Keywords

PCFTHzsingle-mode single-polarizationstructural adjustment

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Related Institution

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