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US 11,057,116 B1Granted
Optical orbital angular momentum for remote sensing and communication
AssigneeLockheed Martin Corporation
InventorJoseph Robert Buck, Jr.
Life of this patent
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Abstract
An optical orbital angular momentum (OAM) encoding system includes an optical source configured to generate a source light, an optical OAM encoder configured to encode the source light based on OAM modes to generate an encoded light, and an optical unit configured to direct the encoded light to a target.
Claims17
An optical orbital angular momentum (OAM) encoding system, the system comprising:
- an optical source configured to generate a source light;
- an optical OAM encoder configured to encode the source light based on OAM modes to generate an encoded light, wherein the optical OAM encoder comprises a plurality of OAM encoders, wherein each of the plurality of OAM encoders is controlled separately and is configured to encode or modulate the source light based on a different configuration of the OAM modes;
- and
- an optical unit configured to direct the encoded light to a target.
1 more element
A remote sensing system based on optical OAM, the system comprising:
- an optical source;
- an optical modulator configured to modulate source light from the optical source with a transmit (TX) signal to generate a modulated signal;
- an optical OAM encoder configured to encode the modulated light based on OAM modes to generate an encoded signal;
- and
- a telescope configured to direct the encoded signal to a target, wherein the telescope is configured to receive a return signal from the target and to direct the return signal to an optical OAM filter, wherein the optical OAM filter is integrated with the optical OAM encoder.
2 more elements
A method comprising:
- generating a source light;
- encoding the light source based on OAM modes to generate an encoded light;
- directing the encoded light to a target;
- and
- applying a transmission protocol to reduce impact of background light on a receiver and to reduce an effect of a turbulence on a channel efficiency, the transmission protocol being optimized to a turbulence regime.
2 more elements
Dependencies are inferred from the claim text.