G - Physics – 02 – F
Patent
G - Physics
02
F
G02F 1/19 (2006.01) G02F 1/315 (2006.01) G02F 1/01 (2006.01)
Patent
CA 2351991
A thermo-optical device to alter the direction and/or intensity of a light beam is described. In the thermo-optical device, a first material in contact with a second material defines an interface therebetween. The first and second materials have disparate thermo-optical coefficients such that, at a first temperature, the refractive indices of the two materials are the same and, at a second temperature, the refractive index of one material is less than the refractive index of the other material. At the first temperature, when the two refractive indices are equal, a light beam incident on the interface is transmitted through the interface without refraction. At the second temperature, the light beam propagating through one of the material, if incident on the interface at an appropriate angle, will be reflected off, instead of transmitted through, the interface.
E-Tek Dynamics Inc.
Jds Uniphase Corporation
Teitelbaum & Maclean
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