Patent ID: 8103136
Filing Date: 2012-01-24
Classification: G02F

Abstract:
1. A method for fabricating a thermo-optic device, comprising the steps of: forming an image in a photoresist layer provided on a core material constructed of optically transparent material provided on a substrate, the image having a pattern of a portion of a waveguide of the thermo-optic device, wherein the waveguide comprises an input section, an output section, and a thermal tuning section having a path length extending between the input section and the output section, wherein the thermal tuning section includes a first linear portion, a second linear portion, and a bend portion connecting the first linear portion and the second linear portion; developing the photoresist layer to form a mask having the pattern of the portion of the waveguide; transferring the pattern of the portion of the waveguide into the core material; and, providing a heater on the substrate and in thermal communication with the thermal tuning section of the waveguide, the heater defining and being coextensive with a first region on a surface of the substrate, the first linear portion and second linear portion defining first and second area portions within the first region and the bend portion defining a second region on the surface of the substrate, the second region being outside the first region.