We first use Lumerical MODE to derive the properties of the silicon waveguide.  Our waveguides will be 220nm in height and 500nm in width to support single-mode propagation.  In addition, we use TE-polarized grating couplers to couple the light on and off the chip.
Lumerical MODE computes the field intensity for our waveguides, and this is shown in Figure \ref{690172}.