نتایج جستجو برای: coupling coefficient

تعداد نتایج: 317575  

2012
CHAO MAO

Aperture coupling is the main coupling mode through which electromagnetic pulse (EMP), ultra wideband (UWB) and high power microwave (HPM) can disturb or damage electronic equipments of the missile enclosure. To get knowledge of the coupling effects of apertures with different shapes and positions, coupling processes of HPM into the missile enclosure are investigated. The simulation results ind...

2003
Dorothea Wiesmann Roland Germann Gian-Luca Bona Christian David Heinz Jäckel

We report on the fabrication of a grating-based add–drop filter in SiON planar waveguide technology. We achieved apodization of the Bragg grating by concatenating subgratings with various duty cycles. We present the theoretical and experimental dependence of the coupling coefficient on the duty cycle, which leads to a minimum coupling coefficient of 30%. With a breeder genetic algorithm we were...

2005
M. Jabbari

Deriving a dynamic model based on the coupled-mode and carrier rate equations, the effects of coupling coefficient and corrugation position on all-optical flip-flops (AOFF) we have analyzed in this paper. Also the self phase modulation (SPM) in the distributed coupling coefficient distributed feedback semiconductor optical amplifier (DCCDFB-SOA) has been implemented. Then the effects of SPM on ...

1999
J Santiago F J Ynduráin

We use the known values of the two loop Wilson coefficients and the three loop anomalous dimension matrix γ(n) to perform a next-to-next-to leading order (NNLO) calculation of ep deep inelastic scattering. Because γ(n) is only known for a few values of n, the method of average reconstruction has to be used, which leaves 102 effective experimental points, for 12 parameters: the QCD mass Λ, and 1...

2008
Germán Rodrigo Antonio Pich Arcadi Santamaria

Using the recent four-loop calculations of the QCD β-function and the three-loop matching coefficients we study the induced errors in αs(mZ) obtained from αs(mτ ) due to the evolution procedure. We show that, when consistent matching and running is used at this order, these errors are pushed below 0.0005 in αs(mZ). The beta function and the quark mass anomalous dimension govern the evolution of...

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