2024 journal article

Porous core fiber with hybrid cladding for ultra-flattened dispersion and low loss propagation of terahertz waves

RESULTS IN OPTICS, 15.

By: M. Sadath n, J. Kokinda n, D. Lin n, M. Hossain* & Q. Gu n

author keywords: Photonic crystal fiber; Terahertz wavelengths; Dispersion; Absorption loss; Effective area
Source: Web Of Science
Added: August 26, 2024

This work proposes a design of a porous-core photonic crystal fiber (PC-PCF) made of a cyclic olefin copolymer, Zeonex, with a hybrid cladding for low-loss terahertz (THz) wave transmission. A combination of circular and elliptical air holes results are employed, resulting in a very low material absorption loss of 0.045 cm-1 atDcore = 450 µm and f = 1 THz. A flat dispersion of 0.73 ± 0.13 ps/THz/cm is obtained for a broad frequency range of 0.5–1.4 THz. Core diameter and frequency response of other key features such as normalized frequency (V-parameter), confinement loss, effective area, nonlinearity and the percentage of the power flow through different sections of the proposed PC-PCF are also analyzed. Comparing to state-of-the-art, our design is superior in terms of loss, dispersion and power fraction. Our proposed design can be manufactured using the established extrusion process and be used for long distance low-loss Terahertz (THz) communication.