Resonant transmission through periodic subwavelength terahertz metallic slits based on a quartz plate

Yoo, Sungjun; Park, Jong-Eon; Choo, Hosung

doi:10.1016/j.rinp.2019.102881

Cited by 3 publications

(1 citation statement)

References 16 publications

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“…After obtaining the entire reflection and transmission coefficients for all the junctions, the complete reflection and transmission coefficients for the geometries in Fig. 2 have to be solved [13]. To compute the total coefficients, the multiregion problem should be applied by considering the multiple reflections occurring at the junctions.…”

Section: Scattering Coefficients By the Mmt And Multiregion Problemmentioning

confidence: 99%

Electromagnetic Interference Inside the Control System Cabinet of a Nuclear Power Plant From External Wireless Devices

Park

Choo

2021

IEEE Access

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This article investigates the scattering characteristics inside the cabinet of a nuclear power plant by the mode-matching technique (MMT) when arbitrary wireless devices are assumed to be applied in the plant. The modal decomposition, multiregion problem, and power conservations of the MMT are introduced to confirm the scattered field inside the cabinet. It is found that stronger scattered fields are usually found when the center of the gap in the rear door of the cabinet is located 1.5λ0 away from the side wall. Therefore, when determining the geometry of the cabinet and digital modules, the scattered field inside the cabinet is systematically analyzed in advance, and appropriate design guidelines for the cabinet can be suggested. INDEX TERMS electromagnetic compatibility, electromagnetic interference, mode-matching technique, multiregion problem This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.

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Section: Scattering Coefficients By the Mmt And Multiregion Problemmentioning

confidence: 99%

Electromagnetic Interference Inside the Control System Cabinet of a Nuclear Power Plant From External Wireless Devices

Park

Choo

2021

IEEE Access

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Precise solving procedure of modal eigenvalues at a subwavelength metal-insulator-metal slit at terahertz frequencies

Park

2024

jamet

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Design and coupling characteristics of terahertz dual-core anti-resonant fiber

Zhang¹,

Sun²,

Yan³

et al. 2020

Acta Phys. Sin.

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The THz wave has good photonic and electronic properties, and has high penetration for non-polar materials, but its own photon energy is low. In addition, the THz wave also has characteristics such as wide bandwidth and large communication capacity, thereby making the THz wave possess important academic value and wide application prospects in the fields of non-destructive testing, biomedical imaging and communication. The development of THz technology requires not only high-performance THz waveguide technology for efficient transmission of THz waves, but also important optical devices such as optical switches, modulators, and couplers that are suitable for THz bands. With the in-depth study of THz waveguide technology, researchers have proposed many high-performance THz waveguide structures, such as metal hollow core tube waveguide, parallel metal plate waveguide, photonic crystal fiber and microstructure hollow core fibers, among which hollow-core photonic crystal fibers and hollow-core anti-resonant fibers (HC-ARF) have developed rapidly in recent years. So far, THz single-mode single-polarization fiber and high-birefringence fiber have been widely studied, but the researches on the fiber structure and devices that realize THz wave directional coupling are relatively rare. In this paper, we study the influences of the arrangement and distribution of the inner and outer claddings of HC-ARF on transmission characteristics, and thus design a new type of THz dual-core anti-resonant fiber. Compared with ordinary quartz fiber couplers and dual-core photonic crystal fibers, it can utilize a relatively simple structure and achieve directional coupling above 2 THz. Using the finite element analysis method to theoretically analyze the loss characteristics and coupling characteristics of the fiber, it is found that HC-ARF changes the periodic arrangement and distribution of the inner cladding tube within a certain range, which can achieve mode leakage without affecting the fiber transmission characteristics. So the THz dual-core anti-resonant fiber can be designed by using the mode leakage coupling mechanism. By changing the core distance and core gap size, the directional coupling with a coupling length of 0.72 m is realized at a transmission frequency of 2.5 THz. This terahertz dual-core anti-resonance fiber will have an important application value in terahertz optical devices such as terahertz optical switches, modulators and couplers.

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Resonant transmission through periodic subwavelength terahertz metallic slits based on a quartz plate

Cited by 3 publications

References 16 publications

Electromagnetic Interference Inside the Control System Cabinet of a Nuclear Power Plant From External Wireless Devices

Electromagnetic Interference Inside the Control System Cabinet of a Nuclear Power Plant From External Wireless Devices

Precise solving procedure of modal eigenvalues at a subwavelength metal-insulator-metal slit at terahertz frequencies

Design and coupling characteristics of terahertz dual-core anti-resonant fiber

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