Soft simulator for optimal design of curved-profile grating couplers for thin film waveguides

We investigated the excitation and de-excitation of TE and TM guided modes in a planar dielectric waveguide with curved-profile grating couplers, and developed a soft simulator for these couplers. This simulator has two functions: (1) optimal design of input and output grating couplers; (2) minimization of the effect of technological parameters variation during fabrication.