Patent ID: 7720341

Claim:
An optical device, comprising: a lower cladding; an input waveguide on the lower cladding having an input waveguide height; an output waveguide on the lower cladding having an output waveguide height that is different from the input waveguide height, wherein at least one of the output waveguide height and the input waveguide height is reduced from an initial formation height to a respective height of the output waveguide and the input waveguide; and a resonator on the lower cladding between the input and output waveguides, the resonator having a resonator height being substantially equal to a particular one of the input and output waveguide heights, wherein respective heights of the input waveguide, the output waveguide and the resonator are configured to cooperatively adjust an aspect ratio between the particular one of the input and output waveguides and the resonator.