Journal ArticleDOI
Porous core photonic crystal fibre with metal-coated central hole for terahertz applications
TLDR
In this article, a novel design of porous octagonal photonic crystal fiber with a metal-coated central hole was investigated and analyzed in the terahertz (THz) range.Abstract:
In this study, a novel design of porous octagonal photonic crystal fibre with a metal-coated central hole is investigated and analysed in the terahertz (THz) range. The suggested structure is analysed near a frequency of 1.0 THz by using the full vectorial finite difference method. The effects of the structure geometrical parameters and bending radius on the mode effective index, effective mode area and attenuation of the proposed design are investigated. The numerical results reveal that the effective mode area with a metal-coated central hole is smaller than that of porous core without a metal-coated central hole by 80%. In addition, very low attenuation can be obtained because of the porosity inside the core region.read more
Citations
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Journal ArticleDOI
Bend-Insensitive and Low-Loss Porous Core Spiral Terahertz Fiber
TL;DR: In this article, a novel kind of porous-core spiral photonic crystal fiber (PCF) is proposed for efficient guidance of terahertz (THz) waves using a circular lattice array of smaller air-holes inside the core of an equiangular spiral structure.
Journal ArticleDOI
Efficient smoothed finite element time domain analysis for photonic devices
TL;DR: The proposed SFETD-BPM is not only accurate but also more computationally efficient than the conventional FEM approach and extended to deal with the very challenging problem of dispersive materials.
Fabrication and characterization of porous-core honeycomb bandgap THz fibers
TL;DR: In this article, a low-loss porous core honeycomb fiber for terahertz wave guiding is proposed, which can be drawn with much higher precision and reproducibility than a corresponding air-core fiber.
Journal ArticleDOI
Design and characterization of rectangular slotted porous core photonic crystal fiber for sensing CO2 gas
TL;DR: In this article, a rectangular slotted porous core photonic crystal fiber (RSPC-PCF) was proposed for CO2 gas sensing using the COMSOL Multi-physics software with version 4.5.150.
Journal ArticleDOI
Terahertz photonic crystal fiber polarization rotator
TL;DR: In this paper, a photonic crystal fiber (PCF) polarization rotator with an asymmetric porous core was proposed to decrease the material losses and increase the hybridness of the two polarized modes.
References
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Cutting-edge terahertz technology
TL;DR: An overview of the status of the terahertz technology, its uses and its future prospects are presented in this article, with a focus on the use of the waveband in a wide range of applications.
Journal ArticleDOI
Optical properties of fourteen metals in the infrared and far infrared: Al, Co, Cu, Au, Fe, Pb, Mo, Ni, Pd, Pt, Ag, Ti, V, and W.
TL;DR: Refinements in the fitting technique have resulted in only slight changes in the Drude model parameters for Al, Au, Ag, and W, and the optical resistivity has been calculated from the Druded model parameters ωτ and ωp and compared to handbook values for the dc resistivity.
Journal ArticleDOI
Metal wires for terahertz wave guiding
Kanglin Wang,Daniel M. Mittleman +1 more
TL;DR: It is shown how a simple waveguide, namely a bare metal wire, can be used to transport terahertz pulses with virtually no dispersion, low attenuation, and with remarkable structural simplicity.
Book
Principles of Terahertz Science and Technology
TL;DR: The principles of terahertz science and technology as discussed by the authors aims to elucidate the fundamentals of THz technology and science for potential new users, and also discusses a number of essential processes where THz waves interact with physical, chemical and biological systems.
Journal Article
Terahertz dielectric properties of polymers
TL;DR: In this paper, the terahertz absorption spectra, the refractive indices and the dielectric functions of various polymer materials were measured and compared, and the loss mechanism was discussed by correlating the absorption coefficients and loss tangents (tan {delta}) of the materials.