Patent ID: 7561770

Claim:
A microresonator system comprising: a substrate having a top surface layer; at least one waveguide embedded within the substrate and positioned adjacent to the top surface layer of the substrate; a microdisk having a top layer, an intermediate layer, a bottom layer, current isolation region and a peripheral annular region; a first electrode located on the top surface layer of the microdisk; and at least one second electrode located on the top surface layer of the substrate adjacent to the microdisk, wherein the bottom layer of the microdisk is attached to and in electrical communication with the top surface layer of the substrate, the microdisk is positioned so that at least a portion of the peripheral annular region is located above the at least one waveguide, and the current isolation region configured to occupy at least a portion of a central region of the microdisk and having a relatively lower index of refraction and relatively larger bandgap than the peripheral annular region.