Patent ID: 6246809
Filing Date: 2001-06-12
Classification: G02F

Abstract:
An optical device for switching a light signal, said optical device including a substrate having a first side and a second side, said optical device comprising:a first waveguide for propagating the light signal, said first waveguide disposed on the first side of the substrate and characterized by a first refractive index, a middle portion, and a first dn/dT coefficient;a second waveguide for propagating the light signal, said second waveguide disposed on the first side of the substrate and characterized by a second refractive index and a second dn/dT coefficient different from said first dn/dT coefficient;an index-adjusting switch element disposed on the first side of the substrate proximate to said first waveguide and said second waveguide, wherein said index-adjusting switch element controls a proportion of the light signal switched between said first waveguide and said second waveguide by adjusting said first and second refractive indexes.