Integrated optical circuit for holographic information processing
AssigneeInternational Business Machines Corporation
InventorFolkert Horst
Life of this patent
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Abstract
An integrated optical circuit for holographic information processing is disclosed. The optical circuit comprises a photorefractive medium and two transmitter arrays. The transmitter arrays are adapted for locally changing the refractive index of the photorefractive medium for holographic encoding of the information in a working plane of the photorefractive medium by transmitting light via optical paths into the photorefractive medium such that an interference pattern is generated in the working plane. The optical paths and the working plane are arranged in a single optical plane.
Claims18
An integrated optical circuit for holographic information processing, the integrated optical circuit comprising a photorefractive medium and two transmitter arrays, the two transmitter arrays being adapted for locally changing a refractive index of the photorefractive medium for holographic encoding of the holographic information in a working plane of the photorefractive medium by transmitting light via optical paths into the photorefractive medium such that an interference pattern is generated in the working plane, the optical paths and the working plane being arranged in a single optical plane, wherein each of the two transmitter arrays comprise an electrical input and an array of output waveguides, the array of output waveguides being adapted for transmitting the light into the photorefractive medium, each of the two transmitter arrays being adapted for modulating the light transmitted through the array of output waveguides based on an electrical modulation signal received through the electrical input in order to encode the holographic information.
A method for holographic information processing, the method comprising:
- providing an integrated optical circuit comprising a photorefractive medium and two transmitter arrays;
- and
- changing, locally, a refractive index of the photorefractive medium for holographic encoding of information in a working plane of the photorefractive medium by transmitting light from the two transmitter arrays via optical paths into the photorefractive medium such that an interference pattern is generated in the working plane, the optical paths and the working plane being arranged in a single optical plane, wherein each of the two transmitter arrays comprise an electrical input and an array of output waveguides, the array of output waveguides being adapted for transmitting the light into the photorefractive medium, each of the two transmitter arrays being adapted for modulating the light transmitted through the array of output waveguides based on an electrical modulation signal received through the electrical input in order to encode the holographic information.
A method for holographic information processing, the method comprising:
- providing an integrated optical circuit comprising a photorefractive medium, two transmitter arrays, and two receiver arrays, the photorefractive medium comprising a refractive index pattern holographically encoding holographic information;
- and
- decoding the holographic information by measuring optical power of a light pulse received by the two receiver arrays, the light pulse being directed through the two transmitter arrays into the photorefractive medium such that it passes the refractive index pattern.
Dependencies are inferred from the claim text.