Patent ID: 8494319

Claim:
An arrayed waveguide grating comprising: a plurality of input signal waveguides running toward an input slab waveguide, the input slab waveguide characterized by an input slab waveguide radius between ends thereof; a plurality of output signal waveguides running from an output slab waveguide, the output slab waveguide characterized by an output slab waveguide radius between ends thereof; a mechanically actuated stabilizing apparatus in the form of a separated chip area implemented with respect to only the input signals or only the output signals; for shifting said signals according to an ambient temperature; wherein the input slab waveguide radius is different than the output slab waveguide radius; and wherein the mechanically actuated stabilizing apparatus is implemented with respect to the input signal waveguides for shifting the input signal waveguides according to an ambient temperature, and wherein the input slab waveguide radius is larger than the output slab waveguide radius.