Results 1 to 10 of about 284,523 (291)

High-efficiency and easy-to-fabricate integrated plasmonic grating couplers for the telecommunication wavelength range

open access: yesКомпьютерная оптика, 2023
The paper describes results of the numerical simulation and experimental characterization of plasmonic gratings and waveguides in the optical range of 1520 – 1630 nm.
D.S. Zemtsov   +6 more
doaj   +1 more source

Coupled Strip-Array Waveguides for Integrated Mid-IR Gas Sensing

open access: yesPhotonics, 2023
Non-dispersive infrared (NDIR) absorption spectroscopy is a widespread approach to gas sensing due to its selectivity and conceptual simplicity. One of the main challenges towards the development of fully integrated NDIR sensors is the design and ...
Pooja Thakkar   +12 more
doaj   +1 more source

Dimensional Transformations of Guided-Mode Resonant Photonic Lattices

open access: yesIEEE Photonics Journal, 2020
Reflection spectra based on guided-mode resonance (GMR) are simulated and discussed with transformation between one-dimensional (1-D) and two-dimensional (2-D) photonic lattices by introducing intermediate structures consisting of vertically-stacked 1-D ...
Akari Watanabe   +5 more
doaj   +1 more source

Analytic Expressions for Orbital Angular Momentum Modal Crosstalk in a Slightly Elliptical Fiber

open access: yesIEEE Photonics Journal, 2020
Assuming weakly guiding approximation, we examine orbital angular momentum (OAM) mode mixing on account of ellipticity in a fiber and derive a complete set of analytic expressions for spatial crosstalk, using scalar perturbation theory that incorporates ...
Ramesh Bhandari
doaj   +1 more source

Reconfigurable Size‐Sorting of Micronanoparticles in Chalcogenide Waveguide Array

open access: yesAdvanced Photonics Research, 2022
Optical tweezers are considered as a revolution, allowing for manipulating particles ranging in scale from a few hundred nanometers (nm) to several micrometers (μm).
Meng Lian   +5 more
doaj   +1 more source

Near‐Field Photodetection in Direction Tunable Surface Plasmon Polaritons Waveguides Embedded with Graphene

open access: yesAdvanced Science, 2023
2D materials have manifested themselves as key components toward compact integrated circuits. Because of their capability to circumvent the diffraction limit, light manipulation using surface plasmon polaritons (SPPs) is highly‐valued.
Chia‐Hung Wu   +9 more
doaj   +1 more source

Temporally and zonally varying atmospheric waveguides – climatologies and connections to quasi-stationary waves [PDF]

open access: yesWeather and Climate Dynamics
Atmospheric waveguides have been linked to amplified quasi-stationary Rossby waves and thus to extreme weather events in the mid-latitudes. Here, we compare different methods of calculating temporally and spatially varying waveguides, including different
R. H. White, L. Mareshet Admasu
doaj   +1 more source

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

Fabrication of Low Loss Lithium Niobate Rib Waveguides Through Photoresist Reflow

open access: yesIEEE Photonics Journal, 2022
We present lithography and argon plasma etching of lithium niobate on insulator (LNOI) rib waveguides using reflowed photoresist etch masks and 405 nm photolithography.
Karan Prabhakar, Ronald M. Reano
doaj   +1 more source

Terahertz Waveguide Prism

open access: yesAdvanced Photonics 2013, 2013
We present an easily fabricated waveguide prism for the terahertz (THz) frequency range. The prism is made of polypropylene and uses waveguide dispersion to spatially separate frequencies over the range of 0.1 to 0.7 THz. The diffraction properties of the prism were determined using electromagnetic field simulations and the waveguide parameters were ...
Claudia, Goy   +4 more
openaire   +2 more sources

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