Design and Analysis of a Low Loss Polarization Maintaining Waveguide for Transmission of THz Waves

Abstract

Abstract

This paper presents the design of a novel porous core kagome lattice photonic crystal fiber (PCF) which acts as a low loss and polarization maintaining teraheartz (THz) waveguide. Using finite element method (FEM), properties of the proposed PCF are simulated in details including the effective material loss (EML), confinement loss, single mode propagation. Cyclic olefin copolymer, also known as TOPAS material have been chosen for the air micro structured inhibited coupled design of PCF which has the lowest bulk material absorption loss of 0.2 cm^-1. Expressions are given to asses this optimization and the result are shown for the variation of core diameter from 425 to 500 um and the porosity from 55 to 70% along with the frequency in THz region from 0.1 to 2 THz. By varying parameters such as core porosity and core diameter within the frequency range, the goal is to show an optimized solution consisting of low EML and confinement loss. In addition, the proposed design also delivers the lowest confinement loss. Findings of this work can be of great significance in biomedical imaging and sensing system.

Keywords: Waveguide, THz, PCF, kagome, EML, TOPAS, confinement, FEM

Cite this Article

Md. Anwar Hossain, Mohaiminul Islam, Fahmida Haque. Design and Analysis of a Low Loss Polarization Maintaining Waveguide for Transmission of THz Waves. Trends in Opto-Electro & Optical Communications. 2016, 3(3): 13–22p.