Results 1 to 10 of about 144,490 (294)

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

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

Birefringence compensation in double-core optical waveguides [PDF]

open access: yes, 1998
A new concept for birefringence compensation in planar optical waveguides applying a double-core structure is introduced. It is demonstrated on waveguides fabricated in silicon oxynitride technology for applications in optical ...
Bona, G.L.   +6 more
core   +13 more sources

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

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

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

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

Integrated Photonic Device for Wavelength-Stable Laser Oscillation and Simultaneous Input Coupling

open access: yesIEEE Photonics Journal, 2023
A guided-mode-resonance device for both narrow-band retroreflection and waveguide input coupling was designed and fabricated for operation wavelength of 1550 nm.
Keisuke Ozawa   +7 more
doaj   +1 more source

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