Optical switch
AssigneeSumitomo Electric Industries, Ltd.
InventorsMasumi Ito, Sumio Hoshino, Hiroo Kanamori
Life of this patent
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Abstract
An optical switch with improved stability which has a flat waveguide including at least two optical waveguides which are made of a glass containing silica and arranged closely each other, at least a core part of each of the optical waveguides consisting of an amorphous material which is prepared by a sol-gel method and contains organic molecules doped and orientated in a direction of electrostatic field by the application of an electrostatic field, and means for changing an optical path through change of a refractive index of the core part by applying an external force to the core part, which means is provided near the core part.
Claims4
An optical switch comprising:
- a substrate,
- a flat waveguide which comprises at least two optical waveguides which are made of a glass comprising silica and arranged closely to each other, at least a core part of each of said optical waveguides consisting of silica which is prepared by a sol-gel method and contains organic molecules doped and orientated in a direction of electrostatic field by the application of an electrostatic field, and
- means for changing an optical path through change of a refractive index of said core part by applying an external force field to said core part, which means is provided near said core part.
Dependencies are inferred from the claim text.