Patent ID: 8615147

Claim:
An optical switch device comprising: one or more first optical waveguides extending in a first direction; one or more second optical waveguides connected to the first optical waveguides in a second direction crossing the first direction; one or more switching parts configured to control light transmitted in the first direction within the first optical waveguide connected with the second waveguide, to selectively reflect the light to the second waveguide extending in the second direction; and an upper clad and a lower clad disposed respectively on an upper side and a lower side of the first and second optical waveguides; wherein the switching part includes a selective reflection part configured to transmit or reflect light, the selective reflection part including a thermo-optic polymer having a variable refractive index that varies according to temperature; wherein the selective reflection part includes a core thermo-optic polymer disposed within the first optical waveguide, and upper and lower thermo-optic polymers disposed respectively within the upper clad and the lower clad; and wherein the core thermo-optic polymer is made from a different material than the upper and lower thermo-optic polymers.