Results 51 to 60 of about 220,487 (206)
Advanced Electronic Materials, EarlyView.A compact passive engineered surface converts changes in microwave frequency into many distinct illumination patterns, allowing nearby objects to be imaged without mechanical scanning, active tuning, or a large antenna array. Operating from 18 to 28 GHz, the single‐port system uses measured field patterns to reconstruct metallic targets and distinguish
Mohammed H. Arif +6 more
wiley +1 more source
A Reciprocity Method of Analysis for Gap Waveguide Slot Antennas
IEEE Access, 2021 This paper introduces analytical solutions to gap waveguide slot antenna structures. The reciprocity method is used for the analysis by exploiting Green’s function of a bed of nails structure employing a homogenized plane-wave spectral-domain ...
Mohammad D. Motevalli +2 more
doaj +1 more source
Laser &Photonics Reviews, EarlyView.A picopatch in a plasmonic nanocavity confines the electromagnetic energy to tiny effective volumes, close to 1nm3, leading to extreme electric field enhancements. Furthermore, a clear signature of strong coupling between the picopatch modes and other modes of the structure is obtained, which strongly modifies the far‐field response. ABSTRACT Plasmonic
Jinna He +6 more
wiley +1 more source
Ultra‐Fast and Energy‐Efficient PZT Optical Tunable Delay Lines for Programmable Photonic Systems
Laser &Photonics Reviews, EarlyView.Thin‐film PZT enables optical tunable delay lines that simultaneously offer sub‐nanosecond switching, low propagation loss, and zero‐static‐power programmability. A five‐bit on‐chip delay line provides a maximum delay of 387.5 ps with a resolution of 12.5 ps, while reconfigurable MZI splitting ratios further enable non‐volatile optical arbitrary ...
Cunyu Shi +11 more
wiley +1 more source
, 2016 We propose a slot-width switching (SWS) silicon-organic hybrid waveguide for broadband and efficient wavelength conversion. By switching the slot width of different lengths, the quasi-phase-matching can be obtained.
Bai, Xinxin +5 more
core +1 more source
Laser &Photonics Reviews, EarlyView.A dual‐layer metasurface is integrated on a fiber‐array facet to realize compact, plug‐and‐play free‐space optical links with cylindrical vector beam (CVB) space‐division multiplexing. An optimized off‐axis collimation layer steers multiple channels, while a Dammann vortex layer performs polarization–topology conversion for bidirectional CVB (de ...
Xipeng Lu +6 more
wiley +1 more source
Rotated Half-Mode Substrate Integrated Waveguide and other Planar Integrated Structures [PDF]
, 2015 High data rate communication channels are becoming more and more integrated into our increasingly technological society. Substrate Integrated Waveguides (SIW) are one planar solution available to the microwave engineer, offering a low-loss and low ...
Farrall, Andrew J
core
Mode converter between channel waveguide and slot waveguide
, 2012 Silicon slot waveguide based mode converter was designed for the effective mode conversion and polarization rotation between a horizontal channel waveguide and a vertical slot waveguide.
Zhang, Jing +11 more
core +1 more source
Analysis of Loaded Substrate Integrated Waveguides and Attenuators [PDF]
, 2013 This letter provides an approximate analysis of a slotted substrate integrated waveguide with periodic loading elements using the transverse resonance technique.
Xu, Ruo Feng +2 more
core +1 more source
Localized Field Enhancements in Guided and Defect Modes of a Periodic Slot Waveguide
IEEE Photonics Journal, 2011 We present a periodic slot waveguide for achieving enhanced light–matter interaction that provides significant localized field and power density enhancements over traditional slot waveguides. The basic structure is based on a slot waveguide with 1-
Judson D. Ryckman, Sharon M. Weiss
doaj +1 more source