Patent ID: 9110221
Filing Date: 2015-08-18
Classification: G02B

Abstract:
1. A photonic waveguide comprising: an undercladding layer; a waveguide core having a cross-sectional height and width disposed on the undercladding layer and comprising a waveguide core material having a thermo-optic coefficient; a refractive index tuning cladding layer disposed on top of the waveguide core and comprising a refractive index tuning cladding material having an adjustable refractive index and an absorption length at a refractive index tuning radiation wavelength; and a thermo-optic coefficient compensation cladding layer disposed on top of the refractive index tuning cladding layer and comprising a thermo-optic coefficient compensation material having a thermo-optic coefficient that is of opposite sign to the thermo-optic coefficient of the waveguide core material and that provides at least partial compensation for the waveguide core thermo-optic coefficient.