Results 21 to 30 of about 173,503 (312)

A Symmetric Parity–Time Coupled Optoelectronic Oscillator Using a Polarization–Dependent Spatial Structure

open access: yesPhotonics, 2023
We propose and experimentally investigate a symmetric parity-time (PT) coupled optoelectronic oscillator (COEO) based on a polarization-dependent spatial structure.
Fengling Zhang   +3 more
doaj   +1 more source

Integrated chirped Bragg gratings with control over complex reflectivity [PDF]

open access: yes, 2009
In this paper, a fully post-growth device grating geometry based on etched sidewall gratings is presented. The grating is written on a ridge waveguide with the grating recess depth, d, and the waveguide width, W, being design parameters.
Marc Sorel   +3 more
core   +1 more source

THE EFFECT OF RANDOM COUPLING COEFFICIENTS ON DECOHERENCE [PDF]

open access: yesModern Physics Letters A, 2010
The aim of this letter is to analyze the effect on decoherence of the randomness of the coupling coefficients involved in the interaction Hamiltonian. By studying the spin-bath model with computer simulations, we show that such randomness greatly improves the "efficiency" of decoherence and, then, its physical meaning deserves to be considered.
Castagnino, Mario Alberto G. J.   +2 more
openaire   +4 more sources

Endocannabinoid Release Modulates Electrical Coupling between CCK Cells Connected via Chemical and Electrical Synapses in CA1. [PDF]

open access: yes, 2011
Electrical coupling between some subclasses of interneurons is thought to promote coordinated firing that generates rhythmic synchronous activity in cortical regions.
Ali eAfia   +5 more
core   +1 more source

Single-Stage Wireless Battery Charging Circuit with Coupling Coefficient Prediction [PDF]

open access: yes, 2021
This paper proposes a single-stage wireless battery charging circuit with a coupling coefficient prediction method. The proposed circuit consists of only two stages: full bridge inverter with transmitter coil in the first stage and full bridge rectifier ...
Young-Kyun Cho, Sang-Won Lee
core   +1 more source

Measuring Coupling Coefficient of Windings With Dissimilar Turns' Number or Tight Coupling Using Resonance [PDF]

open access: yes, 2023
Multiple coupled inductors are used in power electronics to improve the dynamic cross regulation and to reduce mass and volume, mainly in high performance application, such as space or defense, where manufacturing cost is not the main driver.
Maset Sancho, Enrique   +7 more
core   +2 more sources

Research on four-coil structure of magnetically coupled resonant wireless power transmission system

open access: yesGong-kuang zidonghua, 2019
For the position of four coils of traditional four-coil magnetically coupled resonant wireless power transmission system is relatively fixed and cannot be changed at will, which leads to limitation of its use, a new four-coil structure was proposed ...
FENG Liu, HE Jialua
doaj   +1 more source

Coupling coefficient K12 as function of d. [PDF]

open access: yes, 2016
Coupling coefficient K12 as function of d.
Yaqeen S. Mezaal (678572)   +1 more
core   +1 more source

Resonant Mechanism for a Long-Distance Wireless Power Transfer Using Class E PA and GaN HEMT

open access: yesEnergies, 2023
This paper presents a study on long-distance wireless power transfer (WPT), which formulates the voltage gain in terms of the coupling coefficient between the power transmitting unit (PTU) and the power receiving unit (PRU) coils.
Ching-Yao Liu   +5 more
doaj   +1 more source

Development trends of coefficient of variation for new urbanization, ecological efficiency, coupling degree, and coupling coordination degree. [PDF]

open access: yes, 2023
Development trends of coefficient of variation for new urbanization, ecological efficiency, coupling degree, and coupling coordination degree.
Chenjun Liu (5220638)   +5 more
core   +1 more source

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