Method and apparatus for remote sensing using optical orbital angular momentum (OAM)-based spectroscopy for object recognition
AssigneeNEC Corporation
InventorsNeda Cvijetic, Giovanni Milione, Ting Wang
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Abstract
A method and system for remote sensing using optical orbital angular momentum (OAM)-based spectroscopy for object recognition. The method includes applying an OAM state on a light beam to generate an optical OAM spectrum, transmitting the light beam on a remote object, receiving a reflected optical OAM spectrum associated with the remote object, and providing a high resolution image of the remote object based on the reflected optical OAM spectrum.
Claims16
A transmitter using optical orbital angular momentum (OAM)-based spectroscopy for object recognition, the transmitter comprising:
- at least one OAM generator configured to apply at least one OAM state on a single light beam to generate a single optical OAM spectrum configured to carry a compressed high resolution image of a remote object generated by compressive imaging, the at least one OAM state including a complex amplitude described by a phase factor exp(ilθ) with θ being a cylindrical coordinate, l being an integer, and i being an imaginary number;
- and
- a light source that can produce the light beam supporting the optical OAM spectrum for imaging the remote object.
A receiver for optical orbital angular momentum (OAM)-based spectroscopy, the receiver comprising:
- at least one OAM detector configured to receive a single reflected optical OAM spectrum, generated by at least one OAM generator applying at least one OAM state on a single light beam, carrying a compressed high resolution image of a remote object generated by compressive imaging, the reflected optical OAM spectrum including a complex amplitude described by a phase factor exp(ilθ) with θ being a cylindrical coordinate, l, being an integer, and i being an imaginary number;
- and
- a processor to receive the reflected optical OAM spectrum to provide a high resolution image of the remote object from the reflected optical OAM spectrum carrying a compressed high resolution image of the remote object.
Dependencies are inferred from the claim text.