Method and apparatus for cyber security using light polarization
AssigneesRolls-Royce North American Technologies Inc., ROLLS-ROYCE plc
InventorsRichard Joseph Skertic, John Joseph Costello
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Abstract
Systems and methods are provided for cyber security using light polarization. Data may be encoded in an optical signal. A seed may be converted to a target degree of polarization. The optical signal may be polarized to have the target degree of polarization and transmitted. The polarized optical signal may be received at a receiver and a degree of polarization of the received polarized optical signal measured. A seed may be converted by the receiver to an expected degree of polarization. The received polarized optical signal may be determined to be compromised based on a difference between the expected degree of polarization and the degree of polarization of the received polarized optical signal.
Claims20
A transmitter comprising:
- a processor configured to convert a seed into a degree of polarization;
- a polarizer configured to receive an optical signal in which a data packet is embedded, the polarizer further configured to polarize the optical signal at the degree of polarization;
- and
- a fiber optics transmitter configured to transmit the polarized optical signal over a fiber optic network.
A receiver comprising:
- a polarization analyzer configured to receive an optical signal and measure a degree of polarization of the optical signal;
- and
- a processor configured to convert a seed into an expected degree of polarization and determine that the optical signal has been compromised if the degree of polarization of the optical signal fails to match the expected degree of polarization.
A method comprising:
- encoding data in an optical signal;
- converting a seed to a target degree of polarization;
- polarizing the optical signal, which includes the encoded data, to have the target degree of polarization;
- and
- transmitting the polarized optical signal.
Dependencies are inferred from the claim text.