Abstract
A new pulse excitation scheme using a Fourier series is proposed to analyze the wide-band response of optical waveguides. To validate the scheme, a waveguide with high-reflection coatings and a waveguide grating are analyzed using the finite-difference time-domain method. Calculation shows that the transmissivity and reflectivity can be evaluated by a one-time solution over a wide wavelength range of 0.5-2.0 /spl mu/m (two octaves).
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