Bizhan Rashidian

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A Legendre polynomial expansion of electromagnetic fields for analysis of layers with an inhomogeneous re-fractive index profile is reported. The solution of Maxwell's equations subject to boundary conditions is sought in a complete space spanned by Legendre polynomials. Also, the permittivity profile is interpolated by polyno-mials. Different cases(More)
We have developed a simulator for Nanoscale HEMT transistors, in which solution of self-consistent Poisson-Schrödinger equations is obtained with finite element method. In this simulator we solve the exact set of nonlinear differential equations to obtain electron wave function, electric potential distribution, electron density, Fermi surface energy and(More)
—Planar grating diffraction analysis based on Le-gendre expansion of electromagnetic fields is reported. In contrast to conventional RCWA in which the solution is obtained using state variables representation of the coupled wave amplitudes; here, the solution is expanded in terms of Legendre polynomials. This approach, without facing the problem of(More)
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