Results 11 to 20 of about 522,881 (264)

Tunable Multiple Surface Plasmonic Bending Beams into Single One by Changing Incident Light Wavelength

open access: yesPhotonics, 2023
Controllable surface plasmonic bending beams (SPBs) with propagating along bending curves have a wide range of applications in the fields of fiber sensors, optical trapping, and micro-nano manipulations.
Hang Zhang   +4 more
doaj   +1 more source

Programmable Manipulations of Terahertz Beams by Graphene-Based Metasurface With Both Amplitude and Phase Modulations

open access: yesFrontiers in Materials, 2022
Terahertz metasurface with digital, programmable control recently gained considerable attention for its potential applications in high-speed imaging, nondestructive sensing, and wireless communication.
Chenxi Liu   +4 more
doaj   +1 more source

High‐Efficiency Phase and Polarization Modulation Metasurfaces

open access: yesAdvanced Photonics Research, 2022
Use of metasurfaces to control the characteristics of electromagnetic waves is an emerging trend at present. Multifunctional metasurfaces, which can modulate multiple wave parameters, greatly reduce the complexity and enrich the functionality of optical ...
Huan Zhao   +4 more
doaj   +1 more source

Dynamic Reflection Phase Modulation in Terahertz Metamaterial

open access: yesIEEE Photonics Journal, 2019
In order to provide the terahertz metamaterial with dynamic phase modulation capability, a new strategy is proposed. It consists of two different unit cells involving particularly designed metallic concentric circular split ring resonators, both of which
Zeng Yangjian   +4 more
doaj   +1 more source

Engineering Aspheric Liquid Crystal Lenses by Using the Transmission Electrode Technique

open access: yesCrystals, 2020
The transmission electrode technique has been recently proposed as a versatile method to obtain various types of liquid-crystal (LC) lenses. In this work, an equivalent electric circuit and new analytical expressions based on this technique are developed.
José Francisco Algorri   +4 more
doaj   +1 more source

Kerr nonlinearity-assisted quadratic microcomb

open access: yesFrontiers in Physics, 2022
Generation of nonlinear frequency combs in χ(3) optical microresonators has attracted tremendous research interest during the last decade. Recently, realization of the microcomb owing to χ(2) optical nonlinearity in the microresonator promises new ...
Ke Wang   +9 more
doaj   +1 more source

Interfaces of Modulated Phases [PDF]

open access: yesPhysical Review Letters, 1997
Numerically minimizing a continuous free-energy functional which yields several modulated phases, we obtain the order-parameter profiles and interfacial free energies of symmetric and non-symmetric tilt boundaries within the lamellar phase, and of interfaces between coexisting lamellar, hexagonal, and disordered phases.
Netz, R., Andelman, D., Schick, M.
openaire   +3 more sources

Experimental Demonstration of Superimposed Probabilistic 16CAP With the Joint Chaotic Model in a Multi-Core Transmission System

open access: yesIEEE Photonics Journal, 2022
In this paper, we propose a novel carrier-less amplitude/phase modulation with probabilistic shaping based on the Lorenz model and superposition method (LS-PS-CAP).
Yu Gu   +8 more
doaj   +1 more source

Enhancing the Efficacy of Noise Modulation for SBS Suppression in High Power, Narrow Linewidth Fiber Lasers by the Incorporation of Sinusoidal Modulation

open access: yesIEEE Photonics Journal, 2021
Power scaling of continuous-wave, narrow-linewidth fiber lasers are limited by the onset of stimulated Brillouin scattering (SBS) which manifests at threshold as potentially damaging, peak power, backward propagating pulses.
Roopa Prakash   +2 more
doaj   +1 more source

Configurable Modulator for Pure Phase Modulation [PDF]

open access: yes2019 Photonics North (PN), 2019
We present a configurable silicon modulator for pure phase modulation, implemented as a Mach-Zehnder interferometer with a PN carrier depletion modulator (CDM) and tunable couplers. The spurious intensity modulation introduced by the CDM is compensated by tuning the splitting ratios of the couplers and the phase delay between the arms.
Deng, Hong, Bogaerts, Wim
openaire   +1 more source

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