Design and simulation of heptagonal porous core photonic crystal fiber for terahertz wave transmission

Suhaimi, Nurul Awadah Nadiah Binti; Maidi, Abdul Mu’iz; Abas, Pg Emeroylariffion; Kaijage, Shubi; Begum, Feroza

doi:10.1016/j.ijleo.2022.169142

Cited by 10 publications

(4 citation statements)

References 31 publications

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“…Porous-core waveguides consisting of air holes and structural cladding can mitigate external interference and reduce loss because most of the field is guided within the air core region. 5 Moreover, porous-core waveguides based on photonic crystal fibers (PCF) are proven to have excellent transmission characteristics, including low loss, dispersion tunability, large modal effective area, and cutoff-free single-mode transmission. 6 In 2012, Uthman et al 7 introduced a flexible porous-core PCF based on a hexagonal lattice structure with polytetrafluoroethylene (Teflon) as the base material.…”

Section: Introductionmentioning

confidence: 99%

“…Among them, hollow-core waveguides are sensitive to external perturbations and bending, and solid-core waveguides have high material absorption loss. Porous-core waveguides consisting of air holes and structural cladding can mitigate external interference and reduce loss because most of the field is guided within the air core region 5 . Moreover, porous-core waveguides based on photonic crystal fibers (PCF) are proven to have excellent transmission characteristics, including low loss, dispersion tunability, large modal effective area, and cutoff-free single-mode transmission 6 …”

Section: Introductionmentioning

confidence: 99%

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Low-loss flexible terahertz photonic crystal fiber

Qian

Yang

et al. 2023

Opt. Eng.

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.This paper presents a hybrid porous-core flexible photonic crystal fiber (PCF), which has the potential for low-loss guidance of broadband terahertz (THz) waves at low THz bands. Here, the cyclic olefin polymer TOPAS is used for the main material to increase the flexibility of PCF. The central hybrid porous-core area contains a circular and hexagonal design, which reduces the loss of PCF. Simulation results show that the proposed fiber has a very low confinement loss of 3.47 × 10 − 6 dB / cm at 500 GHz operating frequency. The bending loss at a bending radius of 1 cm is as low as 3.2 × 10 − 4 dB / cm. The negligible modal loss facilitates the flexible application to THz systems. Moreover, the fabrication of the proposed PCF design is compatible with widely used methods and technologies, including stacking and drawing, extrusion and drilling. This newly proposed hybrid design of the porous-core region can be considered as an improved version in the research of THz porous-core waveguides.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Low-loss flexible terahertz photonic crystal fiber

Qian

Yang

et al. 2023

Opt. Eng.

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“…Terahertz (THz) wave, between microwave and far-infrared band, is usually de ned as electromagnetic radiation from 0.1 to 10 THz [1]. Along with the rapid development of terahertz sources [2], terahertz detectors [3], and the research of terahertz functional devices [4][5][6][7][8][9], THz technology has developed rapidly in recent years, [10,11], and the ourishing of theoretical knowledge and device design in the three aspects of terahertz wave generation, transmission and detection [12][13][14]. Terahertz metamaterials and metasurfaces have also given terahertz technology a wide range of applications in imaging systems due to the advantages of subwavelength unit scale and exible manipulation of electromagnetic wave amplitude and phase [15].…”

Section: Introductionmentioning

confidence: 99%

Accurate inverse design for high-efficiency and broadband terahertz devices by co-simulation with genetic algorithms

Zhang,

Cui

et al. 2023

J. Opt. Soc. Am. B

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In this study, we combined MATLAB with the rigorous electromagnetic field simulation software Computer Simulation Technology to perform a co-simulation method for inverse design of high-efficiency and broadband THz metasurface devices. In the proposed design method, genetic algorithm (GA) is embedded to realize automatic and inverse design. Aiming toward the different requirements of high-efficiency and broadband THz metasurface devices, different objective functions are set to optimize the design of different types of THz metasurface devices. Based on the rigorous electromagnetic simulation and genetic algorithm, the proposed design method can realize automatic and inverse design with high reliability, compared to the theoretical model based on catenary e-field theory. This study provides an important guiding role and an efficient method for designing and optimizing required metasurface devices with practical applied value.

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“…The propagation of this wave is quite challenging although researchers have achieved remarkable success in the detection and generation of terahertz (THz) radiation. To maximize the benefits of PCF-based devices, different kinds of geometries such as the hexagonal lattice [17], the circular lattice [18], the kagome lattice [19], the D-shaped structure [20], the hollow core [21], the porous core [22], the solid core [23], the micro-structured core [24], the slotted core [25], etc have been designed in the literature.…”

mentioning

confidence: 99%

Design and analysis of low loss solid-core hexagonal photonic crystal fiber for applications in terahertz regime

Rani

Chitra²

2023

J. Phys.: Conf. Ser.

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An index-guiding novel solid-core photonic crystal fiber (SC-PCF) formed by a hexagonal lattice of circular-shaped air holes arranged in silicon background is realized. By varying the radius ‘r’ of the air holes from 0.1a to 0.5a (where ‘a’ is defined as the lattice constant), the characteristic electromagnetic modes of the low loss Terahertz (THz) fiber were solved through eigenmode analysis using finite element method (FEM). The effective mode area and the nonlinearity of the proposed PCF are calculated for different radii of the air holes and it is found that the effective mode area decreases when the radius of the air holes is increased. On the other hand, the nonlinearity increases for an increase in the air holes radii. At 1 THz, the confinement loss of the proposed fiber is in the order of 10−23 dB/m and transmittance efficiency above 96% has been attained. As 5-G technology emanates, THz wave propagation becomes essential and the designed hexagonal lattice SC-PCF will be useful for the advancement of communication systems, sensing devices and several medical applications.

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Design and simulation of heptagonal porous core photonic crystal fiber for terahertz wave transmission

Cited by 10 publications

References 31 publications

Low-loss flexible terahertz photonic crystal fiber

Low-loss flexible terahertz photonic crystal fiber

Accurate inverse design for high-efficiency and broadband terahertz devices by co-simulation with genetic algorithms

Design and analysis of low loss solid-core hexagonal photonic crystal fiber for applications in terahertz regime

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