Results 21 to 30 of about 162,562 (165)

Compact Silicon Slot Waveguide Intersection Based on Mode Transformation and Multimode Interference

open access: yesIEEE Photonics Journal, 2017
Silicon slot waveguide intersections are necessary for photonic-integrated circuits based on silicon slot waveguides. We theoretically investigate a compact silicon slot waveguide intersection, which consists of mode transformers and a multimode strip ...
Kyoung-Soo Kim   +3 more
doaj   +1 more source

8 × 2-Element 60-GHz-Band Circularly Polarized Post-Wall Waveguide Slot Array Antenna Loaded With Dipoles

open access: yesIEEE Access, 2020
In this paper, an 8 × 2-element 60-GHz band circularly polarized post-wall waveguide slot array antenna loaded with dipoles is proposed. The antenna is composed of a feeding circuit, radiating slots on radiating waveguides, and dipoles for ...
Takashi Tomura   +2 more
doaj   +1 more source

Discussion of Two Ways of Optically Modeling Indium–Tin–Oxide Layers in Slot Waveguides for Waveguide Analysis

open access: yesIEEE Photonics Journal, 2016
Slot waveguides (e.g., metal–insulator–metal (MIM) waveguides) with an indium–tin–oxide (ITO) layer in their slot regions are promising as compact intensity modulators.
Min-Suk Kwon
doaj   +1 more source

Propagation loss in slow light photonic crystal waveguides [PDF]

open access: yes, 2012
The field of nanophotonics is a major research topic, as it offers potential solutions to important challenges, such as the creation of low power, high bandwidth interconnects or optical sensors.
Schulz, Sebastian Andreas
core   +2 more sources

Designing an Advanced Biosensor for Rapid Analysis and Detection of Blood Components [PDF]

open access: yesJournal of Microwaves, Optoelectronics and Electromagnetic Applications
In this study, we propose a novel biosensor based on a hexagonal-shaped microcavity with two slot waveguides within a two-dimensional photonic crystal. The biosensor aims to detect various blood components by utilizing a refractive index measurement. The
Farida. Kebaili   +2 more
doaj   +1 more source

Compact Low-Loss Electroabsorption Modulator Using a Graphene-Inserted Metal-Slot-Added Waveguide

open access: yesIEEE Access, 2020
Metal slots have been used to obtain strong light-graphene interaction, which usually requires them to be a few tens of nanometers wide. However, narrow metal slot waveguides have a large intrinsic loss; they are not efficiently connected to conventional
Jihoon Seo, Min-Suk Kwon
doaj   +1 more source

Localized Field Enhancements in Guided and Defect Modes of a Periodic Slot Waveguide

open access: yesIEEE 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

High Gain Slot Array Antenna at 110 GHz Based on Computer Numerical Control

open access: yesMicromachines, 2023
This paper presents a waveguide–slot antenna to generate a radiation beam with high gain fed by a low-loss feeding network at 110 GHz. The proposed antenna consists of a compact eight-way power divider and a waveguide–slot array.
Zhen Tan, Yun Zhao, Jiangqiao Ding
doaj   +1 more source

Discussion of the Epsilon-Near-Zero Effect of Graphene in a Horizontal Slot Waveguide

open access: yesIEEE Photonics Journal, 2014
Horizontal slot waveguides based on graphene have been considered an attractive structure for optical waveguide modulators for transverse magnetic (TM) modes. Graphene is embedded in the slot region of a horizontal slot waveguide.
Min-Suk Kwon
doaj   +1 more source

Contra-directional coupling into slotted photonic crystals for spectrometric applications [PDF]

open access: yes, 2014
We propose and demonstrate the concept of a contra-directional coupler between a W1 and a slotted photonic crystal waveguide. The bandwidth and operating wavelength of such a coupler can be controlled via its geometrical parameters, and power transfer is
Krauss, T.F.   +6 more
core   +1 more source

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