Review of porous core photonic crystal fibers for terahertz waveguiding

Yakasai, Izaddeen Kabir; Abas, Pg Emeroylariffion; Begum, Feroza

doi:10.1016/j.ijleo.2021.166284

Cited by 18 publications

(8 citation statements)

References 171 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The birefringence of optical fiber refers to the difference in the propagation constant between the polarization modes of the light wave transmitted along the x and y axes of the fiber. The birefringence can be obtained using the following expression [18]:…”

Section: Resultsmentioning

confidence: 99%

“…It not only affects the transmission distance of the optical fibers but also influences the cost of fiber transmission. Confinement loss can be expressed as [18]:…”

Section: Resultsmentioning

confidence: 99%

“…Because the refractive index of COC is approximately constant within the band of 0.1-1.5 THz, and terahertz waves mainly propagate in the center air core region of the designed structure, the material dispersion can be neglected in this frequency range, and chromatic dispersion mainly comes from waveguide dispersion. Waveguide dispersion can be expressed as [18]:…”

Section: Resultsmentioning

confidence: 99%

See 2 more Smart Citations

A metasurface structure-assisted terahertz negative curvature fiber

Xu,

Yan,

et al. 2024

Phys. Scr.

View full text Add to dashboard Cite

Negative curvature fibers have the benefits of high bandwidth, low loss, and provide higher transmission performances. Birefringence of the fiber is particularly important, with potential application value in communication, imaging and other fields. In this paper, a metasurface structure-assisted terahertz negative curvature fiber is designed to improve the birefringence characteristic. This work breaks through the conditional design ideas, and theoretically analyzes the effect of adding gold microstructures in the cladding structures on the transmission characteristics of negative curvature fibers. The investigation results show that the birefringence of the designed fiber exhibits a significant increase in most frequency range between 1.75 - 2.4 THz compared to the results before adding gold microstructures. The maximum birefringence reaches as high as 0.00216 when the frequency is 2.175 THz and θ is 90°. Compared to the original frequency, the birefringence has increased by nearly an order of magnitude. The highest birefringence has been increased to 3.5 times. In addition, the influences of the gold microstructures on the confinement loss, waveguide dispersion, and effective mode field area are also investigated. This fiber provides a reference for the design of high birefringence terahertz fibers in the future.

show abstract

Section: Resultsmentioning

confidence: 99%

“…It not only affects the transmission distance of the optical fibers but also influences the cost of fiber transmission. Confinement loss can be expressed as [18]:…”

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

A metasurface structure-assisted terahertz negative curvature fiber

Xu,

Yan,

et al. 2024

Phys. Scr.

View full text Add to dashboard Cite

show abstract

“…The terahertz (THz) spectral region covering between 0.1-10 THz in the electromagnetic spectrum is gaining traction in the research and development arena, due to its potential in providing novel solutions for the telecommunication, sensing, quality control, and medical industries [1][2][3][4][5]. Photonic Crystal Fibres (PCFs) are special-purpose optical fibres containing an array of geometrically structured air holes spanning across the fibre's longitudinal axis.…”

Section: Introductionmentioning

confidence: 99%

Design and simulation of liquid infiltrated photonic crystal fibre in terahertz frequencies

Yakasai¹,

Abas²,

Maidi³

et al. 2022

Phys. Scr.

Self Cite

View full text Add to dashboard Cite

Ethanol, methanol and water are polar solvents with similar physical properties albeit contrasting chemical properties. Therefore, it is essential to provide accurate and reliable methods for detecting these liquids. In this paper, a novel liquid infiltrated photonic crystal fibre for ethanol, methanol and water sensing is introduced. The novel structure is modelled, simulated and analysed in the terahertz (THz) region using a full vectorial finite element method. It is shown that the THz light, which is guided using modified total internal reflection, is confined within the infiltrated analytes with negligible losses. For the detection of infiltrated liquids at 1.6 THz operating frequency, the proposed fibre demonstrates high sensitivities up to 99.73% and confinement losses in the order of 10−4 dB/m. Manufacturing of the proposed fibre is feasible using existing fabrication technologies and it is envisaged that the fibre may provide a solution to existing challenges in detecting common polar solvents.

show abstract

“…Recently, porous core fibers and photonic crystal fibers (PCFs) with central defects have been proposed to substantially increase the air fraction of the guided mode for further reducing the waveguide loss in THz bands [21]- [25]. However, since the solid core propagates light into the material region, this is accompanied by high material absorption.…”

mentioning

confidence: 99%

Low-Loss Polytetrafluoroethylene Hexagonal Porous Fiber for Terahertz Pulse Transmission in the 6G Mobile Communication Window

Lee

Choi

Kim

et al. 2021

IEEE Trans. Microwave Theory Techn.

View full text Add to dashboard Cite

Hexagonal porous optical fiber without a central defect is proposed and numerically analyzed with the finite element method (FEM) for transmitting terahertz (THz) electromagnetic wave pulse. In experiments, the transmission characteristics of polytetrafluoroethylene (PTFE) hexagonal porous optical fibers were measured using a THz time-domain spectroscopy (THz-TDS) system. To precisely estimate the effective material loss (EML), we measured the refractive index and absorption coefficient of PTFE in the THz range to use them in FEM analyses, and the EML of the porous fiber was estimated to be lower than that of a bulk rod as large as by a factor of 2 in the frequency range from 0.1 to 0.33 THz. In experiments, we measured the transmission characteristics of both the porous fibers and the bulk rod, to confirm a significant improvement in THz wave transmission nearly by an order of magnitude in the 6G telecommunication window, showing a better performance than theoretical estimations.

show abstract

Review of porous core photonic crystal fibers for terahertz waveguiding

Cited by 18 publications

References 171 publications

A metasurface structure-assisted terahertz negative curvature fiber

A metasurface structure-assisted terahertz negative curvature fiber

Design and simulation of liquid infiltrated photonic crystal fibre in terahertz frequencies

Low-Loss Polytetrafluoroethylene Hexagonal Porous Fiber for Terahertz Pulse Transmission in the 6G Mobile Communication Window

Contact Info

Product

Resources

About