Low Loss Highly Birefringent Porous Core Fiber for Single Mode Terahertz Wave Guidance

被引：23

作者：

Habib, Md. Ahasan ^{[1
]}

Anower, Md. Shamim ^{[2
]}

机构：

[1] Bangabandhu Sheikh Mujibur Rahman Sci & Technol U, Dept Elect & Elect Engn, Gopalganj 8100, Bangladesh

[2] Rajshahi Univ Engn & Technol, Dept Elect & Elect Engn, Rajshahi 6204, Bangladesh

来源：

CURRENT OPTICS AND PHOTONICS | 2018年 / 2卷 / 03期

关键词：

Far infrared or terahertz; Fiber design and fabrication; Micro; structured fibers; Birefringence; Effective material loss; PHOTONIC CRYSTAL FIBER; TRANSMISSION;

D O I：

10.3807/COPP.2018.2.3.215

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A novel porous-core hexagonal lattice photonic crystal fiber (PCF) is designed and analyzed for efficient terahertz (THz) wave propagation. The finite element method based Comsol v4.2 software is used for numerical analysis of the proposed fiber. A perfectly matched layer boundary condition is used to characterize the guiding properties. Rectangular air-holes are used inside the core to introduce asymmetry for attaining high birefringence. By intentionally rotating the rectangular air holes of porous core structure, an ultrahigh birefringence of 0.045 and low effective material loss of 0.086 cm(-1) can be obtained at the operating frequency of 0.85 THz. Moreover, single-mode properties, power fraction in air core and confinement loss of the proposed PCF are also analyzed. This is expected to be useful for wideband imaging and telecom applications.

引用

页码：215 / 220

页数：6

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