Results 11 to 20 of about 219,661 (297)

Electro-optically tunable microring resonators in lithium niobate

open access: yesNature Photonics, 2007
Optical microresonators have recently attracted a growing attention in the photonics community. Their applications range from quantum electro-dynamics to sensors and filtering devices for optical telecommunication systems, where they are likely to become
A Leinse   +28 more
core   +3 more sources

Miniaturized Vertical‐Cavity Surface‐Emitting Laser Array with a Novel Electrode Design for High‐Speed, Low‐Noise, and High‐Brightness Performance

open access: yesAdvanced Photonics Research, 2023
Herein, it is shown how the novel layout and arrangement of electrodes of a vertical‐cavity surface‐emitting laser (VCSEL) array can simultaneously improve its high‐speed data transmission performance and the brightness of the output beam. In contrast to
Zuhaib Khan   +8 more
doaj   +1 more source

Analysis and Design of Plasmonic-Organic Hybrid Electro-Optic Modulators Based on Directional Couplers

open access: yesIEEE Photonics Journal, 2022
We present a detailed simulation study on plasmonic-organic hybrid electro-optic modulators based on coupled symmetric or asymmetric plasmonic slots. An electro-optic polymer is exploited as an active material, and the device is compatible with a silicon
Alberto Tibaldi   +5 more
doaj   +1 more source

Chaotic Breathers in Delayed Electro-Optical Systems [PDF]

open access: yesPhysical Review Letters, 2005
We show that in integro-differential delayed dynamical systems, a hybrid state of simultaneous fast-scale chaos and slow-scale periodicity can emerge subsequently to a sequence of Hopf bifurcations. The resulting time trace thereby consists in chaotic oscillations "breathing" periodically at a significantly lower frequency.
Kouomou, Y.C.   +3 more
openaire   +4 more sources

Cellulose‐Based Radiative Cooling and Solar Heating Powers Ionic Thermoelectrics

open access: yesAdvanced Science, 2023
Cellulose opens for sustainable materials suitable for radiative cooling thanks to inherent high thermal emissivity combined with low solar absorptance. When desired, solar absorptance can be introduced by additives such as carbon black.
Mingna Liao   +8 more
doaj   +1 more source

Exploring a Band-Edge Bragg Grating Modulator on a Hybrid Thin-Film Lithium Niobate Platform

open access: yesIEEE Photonics Journal, 2021
In this work, we design, model, and characterize the Bragg grating modulator (BGM) on silicon-rich nitride and thin-film lithium niobate (SRN-TFLN) platform.
Xingrui Huang   +5 more
doaj   +1 more source

Controlling phonons and photons at the wavelength-scale: silicon photonics meets silicon phononics [PDF]

open access: yes, 2018
Radio-frequency communication systems have long used bulk- and surface-acoustic-wave devices supporting ultrasonic mechanical waves to manipulate and sense signals. These devices have greatly improved our ability to process microwaves by interfacing them
Baets, Roel   +3 more
core   +2 more sources

Editorial for the Special Issue on Optical MEMS

open access: yesMicromachines, 2019
Optical micro-electro-mechanical systems (MEMS), micro-opto-electro-mechanical systems (MOEMS), or optical microsystems are devices or systems that interact with light through actuation or sensing at a micron or millimeter scale [...]
Huikai Xie, Frederic Zamkotsian
doaj   +1 more source

Improvement of Overlap for 2x2 MZI Electro-Optic Switch Based on Lithium Tantalite (LiTaO3)

open access: yesمجلة النهرين للعلوم الهندسية, 2022
This research introduces a method of an electro-optic effect and electro-refractive effect that considers very imperative for high-speed optical communication systems.
Sadeq Adnan Hbeeb
doaj   +1 more source

Shape recognition using orientational and morphological scale‐spaces of curvatures

open access: yesIET Computer Vision, 2015
In this study, a scale‐invariant representation for closed planar curves (silhouettes) is proposed. The orientations of all points within the Gaussian scale‐space of the curve are extracted.
Erdem Akagündüz
doaj   +1 more source

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