We simulate the propagation of light in a W1 planar photonic crystal waveguide with the three-dimensional finite-difference time-domain method and apply an inner product against previously calculated mode profiles to the simulated field cross sections. We show that this inner product satisfies mode orthogonality for both photonic crystal waveguides and segmented waveguides and use the obtained data to evaluate waveguide losses.
© 2003 Optical Society of America
Jeremy Witzens, Thomas Baehr-Jones, Michael Hochberg, Marko Lončar, and Axel Scherer, "Photonic crystal waveguide-mode orthogonality conditions and computation of intrinsic waveguide losses," J. Opt. Soc. Am. A 20, 1963-1968 (2003)