A porous terahertz fiber with randomly distributed air holes

Bai, Jinjun; Li, J. N.; Zhang, H.; Fang, Hui; Chang, Shengjiang

doi:10.1007/s00340-010-4334-x

Cited by 18 publications

(4 citation statements)

References 25 publications

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“…The proposed PCF has a mode field area of the order of 105 μm2, which is very similar to Refs. 12, 20, and 21. The core power fraction is up to 47%.…”

Section: Simulation and Resultsmentioning

confidence: 99%

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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“…The proposed PCF has a mode field area of the order of 105 μm2, which is very similar to Refs. 12, 20, and 21. The core power fraction is up to 47%.…”

Section: Simulation and Resultsmentioning

confidence: 99%

Low-loss flexible terahertz photonic crystal fiber

Qian

Yang

et al. 2023

Opt. Eng.

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“…where, j P , P total denote the power propagating through the observation area and the whole fiber, respectively. The effective mode area (A eff ) represents the distributed electric field energy inside the waveguide, and is expressed by [31]:…”

Section: Effective Mode Area and Power Fractionmentioning

confidence: 99%

Highly birefringent photonic crystal fibers with near-zero flattened dispersion for polarization-maintaining terahertz transmission

Yang,

et al. 2024

Phys. Scr.

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In this work, we present a novel hexagonal lattice porous-core photonic crystal fiber (PCF) exhibiting high birefringence, low loss, and near-zero flattened dispersion in the terahertz regime. The core design incorporates asymmetric rectangular and triangular air holes to achieve enhanced birefringence performance. The background material, TOPAS, is carefully selected to minimize dispersion and transmission losses. Furthermore, by employing the finite element method, the guiding properties of the proposed PCF are comprehensively investigated. Our simulation results reveal a near-zero flattened dispersion value of "±0.2ps∙THz^-1∙cm^-1" within a broad frequency range of "0.8-1.6THz" , accompanied by an impressive birefringence value of "0.072" . Additionally, the PCF demonstrates outstanding characteristics in terms of confinement loss, effective material loss, effective mode area, core power fraction, and bending loss. Considering its exceptional attributes, the proposed PCF holds significant promise for polarization-maintaining applications and terahertz communication systems.

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“…With these geometries, not only the porosity increased (for rectangular: 65% and for spider-web: 57%), but a strong birefringence (~ 0.012 at 0.65 THz) also got introduced. Several other proposals have been made in the literature on solid-and porous-core IG-fibers, such as PoCF with ultra-high porosity (~ 86%) [167], spider-web PoCF with ultra-low loss and low-dispersion [168], randomly porous fiber with improved properties [169], suspended-solid and porous core fiber [170], PoCF with elliptical holes with high birefringence (~ 0.0445) [171], rotated porous-core microstructured fiber [172], graded index PoCF [173] etc. We have summarized the re rted IG-fibers for THz transmission in Table II.…”

Section: Optical Fibers For Thz Transmissionmentioning

confidence: 99%

Specialty Fibers for Terahertz Generation and Transmission: A Review

Barh

Pal

Agrawal

et al. 2016

IEEE J. Select. Topics Quantum Electron.

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Abstract-Terahertz (THz) frequency range, lying between the optical and microwave range covers a significant portion of the electro-magnetic spectrum. Though its initial usage started in the 1960s, active research in the THz field started only in the 1990s by researchers from both optics and microwaves disciplines. The use of optical fibers for THz application has attracted considerable attention in recent years. In this article, we review the progress and current status of optical fiber-based techniques for THz generation and transmission. The first part of this review focuses on THz sources. After a review on various types of THz sources, we discuss how specialty optical fibers can be used for THz generation. The second part of this review focuses on the guided wave propagation of THz waves for their transmission. After discussing various wave guiding schemes, we consider new fiber designs for THz transmission.

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A porous terahertz fiber with randomly distributed air holes

Cited by 18 publications

References 25 publications

Low-loss flexible terahertz photonic crystal fiber

Low-loss flexible terahertz photonic crystal fiber

Highly birefringent photonic crystal fibers with near-zero flattened dispersion for polarization-maintaining terahertz transmission

Specialty Fibers for Terahertz Generation and Transmission: A Review

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