Results 11 to 20 of about 1,350 (185)

Guided Lamb waves in reconfigurable phononic crystal waveguides

open access: yesAPL Materials, 2021
We demonstrate experimentally the manipulation of Lamb waves guided along reconfigurable phononic circuits created by defects composed of threaded rods held with nuts in a perforated solid phononic crystal slab.
Yan-Feng Wang   +5 more
doaj   +1 more source

Using quasi-guided modes for modeling the transfer behavior of bent dielectric slab waveguides [PDF]

open access: yesAdvances in Radio Science, 2010
The connection of two straight dielectric multimode slab waveguides by a circular bent waveguide is analyzed by means of quasi-guided modes. These modes correspond to the well known leaky modes, but own real eigenvalues, thus the mathematical ...
M. Stallein, B. Bandlow, R. Schuhmann
doaj   +1 more source

All-Optical Bistability in Photonic Crystal Slabs with Coupled Cavity-waveguide Structure [PDF]

open access: yesفیزیک کاربردی ایران, 2021
In this study, we consider a photonic crystal slab with a triangular lattice, which consists of air holes with a circular shape in a tellurium background on top of a Teflon substrate.
Taymaz Fathollahi-khalkhali
doaj   +1 more source

A Nanoplasmonic-Based Biosensing Approach for Wide-Range and Highly Sensitive Detection of Chemicals

open access: yesNanomaterials, 2021
In a specific biosensing application, a nanoplasmonic sensor chip has been tested by an experimental setup based on an aluminum holder and two plastic optical fibers used to illuminate and collect the transmitted light.
Francesco Arcadio   +9 more
doaj   +1 more source

Propagation Characteristics of Multilayer Hybrid Insulator-Metal-Insulator and Metal-Insulator-Metal Plasmonic Waveguides

open access: yesAdvanced Electromagnetics, 2014
Propagation characteristics of symmetrical and asymmetrical multilayer hybrid insulator-metal-insulator (HIMI) and metal-insulator-metal (HMIM) plasmonic slab waveguides are investigated using the transfer matrix method.
M. Talafi Noghani, M. H. Vadjed Samiei
doaj   +1 more source

Miniaturized Backward Coupler Realized by the Circuit‐Based Planar Hyperbolic Waveguide

open access: yesAdvanced Photonics Research, 2021
Planar waveguides limit the transmission of electromagnetic waves in a specific direction and have a wide range of applications in filters, sensors, and energy‐transfer devices.
Zhiwei Guo   +3 more
doaj   +1 more source

Waveguide containing a backward‐wave slab [PDF]

open access: yesRadio Science, 2003
We have considered theoretically the waveguide properties of a plane two‐layered waveguide, whose one layer is a usual magnetodielectric (forward‐wave medium), but another one is a slab of so‐called backward‐wave material (BW‐material), whose both permittivity and permeability are negative.
Nefedov, I. S., Tretyakov, S. A.
openaire   +2 more sources

Design of Rectangular Optical Waveguide on LiTaO3 Crystal Using Thermal Annealled Proton Exchange Methods

open access: yesJurnal Elektronika dan Telekomunikasi, 2016
Optical waveguides are the key component for distributing optical signals with very low propagation loss in optical communication. Several type optical waveguides are established currently such as silica optical fiber.
Yusuf Nur Wijayanto   +2 more
doaj   +1 more source

Toward the Development of Plasmonic Biosensors to Realize Point-of-Care Tests for the Detection of Viruses and Bacteria

open access: yesEngineering Proceedings, 2023
Optical fiber biosensors can be used to develop point-of-care tests (POCTs) for detecting viruses and bacteria in several matrices. In particular, the surface plasmon resonance (SPR) and localized SPR phenomena (LSPR) can be excited by exploiting low ...
Francesco Arcadio   +5 more
doaj   +1 more source

Subwavelength structured silicon waveguides and photonic devices

open access: yesNanophotonics, 2020
Subwavelength structures such as subwavelength gratings (SWGs) and subwavelength metamaterials are capable of tailoring the optical properties of materials and controlling the flow of light at the nanoscale.
Sun Lu   +4 more
doaj   +1 more source

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