Numerical analysis of lamellar grating type periodic semiconductor waveguide with rectangular cross-section

摘要

Lamellar grating type semiconductor periodic waveguides with rectangular cross-section are analyzed numerically using Fourier series expansion method, and the wavelength characteristics of reflected and transmitted powers of both guided and radiation modes are investigated for several values of the groove depth and length of the grating waveguide. Then the effects of the radiation fields are made clear, and the preferred parameters for the stable propagation of the reflected dominant guided mode are recommended.