Results 1 to 10 of about 2,885 (119)
Additively manufactured lightweight coaxial to circular waveguide transition for linearly polarized microwave systems [PDF]
Scientific ReportsWaveguides and transitions provide efficient, low-loss microwave transmission across a target frequency band for space communications and radar. However, traditional waveguide transitions suffer from impedance mismatch, higher-order mode excitation ...
Hasan Muhammad Fahad +3 more
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Opto-Electronic Advances, 2021 We report on the fabrication of circular cladding waveguides with cross-section diameters of 60−120 μm in Pr:YAG crystal by applying femtosecond laser inscription.
Quanxin Yang +5 more
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Compact, spatial-mode-interaction-free, ultralow-loss, nonlinear photonic integrated circuits
Communications Physics, 2022 Adiabatic bends are used to reduce the optical loss of waveguides for integrated optics, but quantitative analysis of their adiabaticity have not been reported.
Xinru Ji +6 more
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A Broadband Radial Power Combiner Using a Dipole Antenna-Based TM Mode Transducer
IEEE Access, 2022 A TM01 mode transducer based on dipole antenna is proposed to design a broadband and low-loss radial power combiner at Ka-band (26.5–40 GHz). It is an essential component in the radial power combiners to convert the electromagnetic modes between ...
Sungjun Park, Bongmo Kang, Jinho Jeong
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Index Modulation Embedded in Type I Waveguide Written by Femtosecond Laser in Fused Silica
Micromachines, 2021 Slit-shaped laser beams focused in bulk optical materials can realize embedded waveguides with circular cross sections consisting of positive index change type I traces.
Jing Lv +3 more
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IET Microwaves, Antennas & Propagation, 2021 A novel design for a TE10‐mode rectangular waveguide to a TE11‐mode circular waveguide mode converter based on the use of an intermediate one‐step double‐cruciform section is proposed. The converter achieves compactness and broadband by employing the one‐
Jie Deng, Ke Wu, Quxian Li
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Polarization conversion in a polariton three-waveguide coupler
Results in Optics, 2021 We propose an approach to control of polarization of propagating light in a waveguide geometry. We suggest using a three-waveguide coupler etched in a planar semiconductor microcavity with embedded quantum wells.
Irina Sedova, Evgeny Sedov
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Perfect Invisibility Modes in Dielectric Nanofibers
Photonics, 2023 With the help of the original mathematical method for solving Maxwell’s equations, it is shown that in dielectric waveguides along with usual waveguides and quasi-normal modes, there are perfect invisibility modes or perfect non-scattering modes.
Vasily V. Klimov, Dmitry V. Guzatov
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Attenuation in Superconducting Circular Waveguides
Advanced Electromagnetics, 2016 We present an analysis on wave propagation in superconducting circular waveguides. In order to account for the presence of quasiparticles in the intragap states of a superconductor, we employ the characteristic equation derived from the extended Mattis ...
K. H. Yeap +4 more
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Electromagnetic pulse shielding effectiveness of circular multi-waveguides for fluids
Results in Physics, 2020 Generally, large-scale plumbing work is necessary to facilitate continuous supply of air, oil, and water to ensure a sustained operation for more than two weeks under unusual conditions during which no necessary supplies can be procured from external ...
Sangho Yoon +3 more
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