Ultra-high birefringent low loss suspended elliptical core photonic crystal fiber for terahertz applications

This paper presents a low loss suspended core microstructured fiber with ultra-high birefringence for terahertz wave guidance. The finite element method (FEM) with a perfectly matched layer is applied to investigate different important properties including effective material loss (EML), birefringenc...

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Bibliographic Details
Published in:Applied optics (2004) 2020-10, Vol.59 (30), p.9385
Main Authors: Sadath, Md. Anwar, Saiful Islam, Mohammad, Hossain, Md. Sanwar, Faisal, Mohammad
Format: Article
Language:English
Subjects:
Birefringence
Confinement
Crystal fibers
Finite element method
Perfectly matched layers
Photonic crystals
Power flow
Terahertz frequencies
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Summary:This paper presents a low loss suspended core microstructured fiber with ultra-high birefringence for terahertz wave guidance. The finite element method (FEM) with a perfectly matched layer is applied to investigate different important properties including effective material loss (EML), birefringence, dispersion, confinement loss, and percentage of power flow through the core. The suspended elliptical core in the design creates asymmetry and results in an unprecedented value of birefringence. The simulated results using FEM at 1 THz show an extremely ultra-high birefringence (the highest, to the best of our knowledge) of 0.1116, a nominal EML of , a negligible confinement loss of , a higher power fraction in the core air of 35%, and an effective modal area of . The advancement in technology makes the fabrication possible. The proposed fiber could be used satisfactorily in the terahertz regime for various polarization-preserving applications and coherent communication.
ISSN:1559-128X
2155-3165
DOI:10.1364/AO.402530