, Volume 26, Issue 3, pp S199-S205

Computation of higher-order waveguide modes by imaginary-distance beam propagation method

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Abstact

Yevick and Hermansson presented an efficient numerical method for calculating fundamental modes of optical waveguides. We extend their technique to higher-order eigenmodes. Using a finite-difference beam propagation method, we obtain propagation constants and field profiles for the three lowest-order TE modes in an asymmetric rib waveguide.