A new method for the computation of eigenmodes in Isotropic cylindrical loss-free dielectric waveguides is proposed. Such waveguide is a cylindrical structure with the refractive index n not varied along the generatrix of ...

© 2014 IEEE. We present a new method for calculation of permittivities of dielectric materials using optical fiber's propagation constants measurements. Our numerical algorithm is based on approximate solution of a nonlinear ...

© 2016 IEEE.We study the lasing modes of microlasers with ring-like active regions. We reduce the considered eigenvalue problems to transcendental equations and solve them numerically. The comparison of the spectral ...

© 2015 IEEE. Microcavity lasers shaped as thin circular disks are famous for the ultra-low thresholds of their whispering-gallery (WG) modes. We considered a two-dimensional (2-D) model of such a laser in free space with ...

© 2016, Springer-Verlag Berlin Heidelberg.We study the lasing modes of microdisk lasers with ring-like electrodes or active regions, in two-dimensional (2-D) formulation. The considered eigenvalue problem is adapted to the ...

© 2016 IEEE.We investigated the lasing spectra, threshold gain values, and modal fields of two-dimensional elliptical microcavity lasers with centrally located circular active regions. Our numerical experiments were based ...

© 2016 IEEE.We investigate electromagnetic fields and emission thresholds of two-dimensional dielectric microcavities solving the Lasing Eigenvalue Problem (LEP). We propose a new convenient formulation of LEP as a nonlinear ...

© 2018 IEEE. Eigenmodes of triangular microcavities with piercing holes in the center are computed as solutions of the Lasing Eigenvalue Problem using the system of Muller boundary integral equations and the Nyström method. ...

© 2018 Walter de Gruyter GmbH, Berlin/Boston. The original problem for eigenwaves of weakly guiding optical fibers formulated on the plane is reduced to a convenient for numerical solution linear parametric eigenvalue ...

The domain of localization is found, and nonemptiness is proved, for the spectrum of eigenmodes of a cylindrical dielectric waveguide. Copyright © 1999 by MAHK "Hayka/Interperiodica".