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US 5,319,492 AGranted
Optical switch
AssigneeAlcatel
InventorsReimund Dorn, Peter Kersten, Werner Rehm, Wiltraud Wischmann
Life of this patent
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Abstract
An optical switch has a substrate and a transparent material in which a three-dimensional diffraction pattern is recorded which is capable of diffracting light, the material having non-linear optical properties and extending in the form of a first layer above the substrate. At least one first electrode and at least one second electrode are provided for varying the diffraction pattern in accordance with applied voltages.
Claims18
An optical switch comprising:
- a substrate;
- a transparent material in which a three-dimensional diffraction pattern is recorded which is capable of diffracting light, the material having non-linear optical properties and extending in the form of a first layer above the substrate;
- and
- at least one first electrode and at least one second electrode for varying the diffraction pattern in accordance with applied voltages;
- wherein the transparent material is a polymer with molecules of a particular predefined internal orientation;
- and
- wherein the polymer is formed as a plurality of sub-layers, each sub-layer having molecules of a respective internal orientation which is different from orientations of an overlying sub-layer and an underlying sub-layer.
4 more elements
An optical switch comprising:
- a substrate;
- a transparent material in which a three-dimensional diffraction pattern is recorded which is capable of diffracting light, the material having non-linear optical properties and extending in the form of a first layer above the substrate;
- and
- at least one first electrode and at least one second electrode for varying the diffraction pattern in accordance with applied voltages;
- wherein the transparent material is a polymer with molecules of a particular predefined internal orientation;
- and
- wherein the polymer is formed as a plurality of sub-layers, each sub-layer having molecules of a respective orientation which is opposite to an orientation of an overlying sub-layer and an underlying sub-layer.
4 more elements
A method of forming an optical switch comprising:
- providing a substrate of a dielectric material;
- providing an optical material having non-linear optical properties on said substrate;
- and
- providing a plurality of electrodes on at least one surface of said optical material;
- wherein the step of providing the optical material comprises depositing a plurality of layers of optical material on the substrate.
2 more elements
Dependencies are inferred from the claim text.