Results 11 to 20 of about 2,389 (259)
All-optical switching in epsilon-near-zero asymmetric directional coupler [PDF]
Scientific Reports, 2022 We propose an all-optical switch based on an asymmetric directional coupler structure with epsilon-near-zero (ENZ) layer. The nonlinear optical properties the of ENZ layer are analyzed by hot-electron dynamics process, and the all-optical operating ...
Yanhua Sha +4 more
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Tandem Mach Zehnder Directional Coupler Design and Simulation on Silicon Platform for Optical Coherence Tomography Applications [PDF]
Sensors, 2020 We design and compare the splitting ratio wavelength flatness of directional coupler (DC), Mach-Zehnder directional coupler (MZDC), and tandem MZDC.
Yi-Ting Lu +3 more
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Quasi-Optical Four-Port Acoustic Filters Based on NEMS Coupled Beam Arrays [PDF]
MicromachinesTheoretical models are presented for quasi-optical four-port acoustic devices based on NEMS-coupled beam arrays. Analogies with coupled mode devices in microwaves, ultrasonics, optics, and electron wave optics are first reviewed, together with coupled ...
Richard Syms
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Branch Waveguide Couplers with a frequency of 510 GHz for Terahertz Transmit/Receive Isolation Applications [PDF]
MicromachinesTo address the requirement of functioning as a transmit/receive isolation device in terahertz transceiver systems, in this paper, we present two high−isolation multi−branch waveguide directional couplers operating at a center frequency of 510 GHz. One is
Hao Li, Dehai Zhang, Jin Meng, Li Wang
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Coulomb blockade directional coupler [PDF]
Applied Physics Letters, 2005 A tunable directional coupler based on Coulomb Blockade effect is presented. Two electron waveguides are coupled by a quantum dot to an injector waveguide. Electron confinement is obtained by surface Schottky gates on single GaAs/AlGaAs heterojunction. Magneto-electrical measurements down to 350 mK are presented and large transconductance oscillations ...
PINGUE, Pasqualantonio +5 more
openaire +4 more sources
Results in Optics, 2023 We report here one of the significant performance parameters of a 2 × 2 symmetric directional coupler, the splitting ratio, in the nonlinear conditions considering the coupler fabricated with two similar mono-mode triangular index fibers.
Biplab Kumar Ray +2 more
doaj +1 more source
Jurnal Elektronika dan Telekomunikasi, 2016 Directional coupler frekuensi radio (RF) menggunakan dua jalur mikrostrip asimetris dibahas dan dirancang dengan struktur planar pada substrat duroid 5880.
Sri Hardiati, Hana Arisesa
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International Journal of Antennas and Propagation, 2023 This paper presents an efficient decoupling network using a single directional coupler and transmission lines for closely spaced Tx/Rx antennas in single polarized radar applications. The isolation between both antennas can be enhanced by controlling the
Jeong-Hun Park +2 more
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Micromachines, 2022 Directional couplers, as power splitters, have provided a significant contribution for light splitting and combining in silicon photonics. However, the splitting ratio of conventional directional couplers is very sensitive to wavelength, which limits the
Donghao Li +7 more
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IEEE Photonics Journal, 2017 We propose a horizontal directional coupler formed with two parallel waveguides of different heights. By breaking the symmetry in both the horizontal and the vertical direction, this directional coupler can be designed to allow us coupling between any ...
Wei Ke Zhao +3 more
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