Results 31 to 40 of about 299,628 (304)

The Effect of Spatial Mode Distribution on Coupling Efficiency of Single-Mode Fiber: Theoretical Analysis and Experimental Verification

open access: yesApplied Sciences, 2019
In this study, Zernike polynomials and optical fiber field theory are applied to build a mathematical model of coupling efficiency (CE) and spatial mode of aberrations.
Yongkai Liu   +6 more
doaj   +1 more source

Objective and efficient inference for couplings in neuronal network* [PDF]

open access: yesJournal of Statistical Mechanics: Theory and Experiment, 2019
Abstract Inferring directional couplings from the spike data of networks is desired in various scientific fields such as neuroscience. Here, we apply a recently proposed objective procedure to the spike data obtained from the Hodgkin–Huxley type models and in vitro neuronal ...
Yu Terada   +3 more
openaire   +3 more sources

Oxidative Photocatalytic Homo- and Cross-Coupling of Phenols: Non-Enzymatic, Catalytic Method for Coupling Tyrosine

open access: yes, 2020
The first, oxidative photocatalytic method for phenol-phenol homo-coupling and cross-coupling is described and isolated yields of up to 97% are obtained.
Philip H., Gilmartin   +2 more
core   +1 more source

All-Angle Quasi-Self-Collimation Effect in a Rod-Type Silicon Photonic Crystal

open access: yesIEEE Photonics Journal, 2015
By changing the symmetry of a photonic crystal (PC) with a rectangular lattice to straighten one of the isofrequency contours, the PC shows an all-angle quasi-self-collimation (quasi-SC) effect. To investigate the straightness of the isofrequency contour
Ming Li   +9 more
doaj   +1 more source

Coupling the Kolmogorov diffusion: maximality and efficiency considerations [PDF]

open access: yesAdvances in Applied Probability, 2016
AbstractThis is a case study concerning the rate at which probabilistic coupling occurs for nilpotent diffusions. We focus on the simplest case of Kolmogorov diffusion (Brownian motion together with its time integral or, more generally, together with a finite number of iterated time integrals).
Banerjee, Sayan, Kendall, W. S.
openaire   +3 more sources

High-Efficiency Coupling Method of the Gradient-Index Fiber Probe and Hollow-Core Photonic Crystal Fiber

open access: yesApplied Sciences, 2019
A high-efficiency coupling method using the gradient-index (GRIN) fiber probe and hollow-core photonic crystal fiber (HC-PCF) is proposed to improve the response time and the sensitivity of gas sensors. A coupling efficiency model of the GRIN fiber probe
Chi Wang   +5 more
doaj   +1 more source

Stochastic coupled cluster theory: Efficient sampling of the coupled cluster expansion [PDF]

open access: yesThe Journal of Chemical Physics, 2017
We consider the sampling of the coupled cluster expansion within stochastic coupled cluster theory. Observing the limitations of previous approaches due to the inherently non-linear behavior of a coupled cluster wavefunction representation, we propose new approaches based on an intuitive, well-defined condition for sampling weights and on sampling the ...
Charles J. C. Scott, Alex J. W. Thom
openaire   +3 more sources

Characteristic analysis of core radius, core refractive index, mismatched phase constant and coupling efficiency about 2 × 2 fiber directional coupler based on MATLAB

open access: yesResults in Optics, 2022
When two parallel waveguides are close to each other, the power of the two adjacent waveguides will be periodically converted to form a directional coupled waveguide system ().
YuCheng Li   +3 more
doaj   +1 more source

For Higher Coupling Efficiency [PDF]

open access: yesPhotonicsViews, 2019
AbstractTelecommunications connections must transport an unimaginable amount of data in real time over long distances. To feed source signals into the fiber optic cable with as little loss as possible, telecommunications companies monitor lasers' performance data using laser beam profilers equipped with infrared cameras from Allied Vision.
openaire   +1 more source

Modal correction for fiber-coupling efficiency in free-space optical communication systems through atmospheric turbulence

open access: yes, 2010
High-speed free-space optical communication systems have recently used fiber-optical components. The coupling efficiency with which the received laser beam can be coupled into a single-mode fiber is noticeably limited by atmospheric turbulence due to the
Yan HX, 吴晗玲, Li XY, 严海星
core   +1 more source

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