Verfahren zur polarisationskompensation und optisches freiraumkommunikationssystem für flugzeuge

AT1911189TUndetermined Publication Date: 2026-05-15AIRBUS (SAS)
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Patent Information

Application Number
AT2022191368T
Authority / Receiving Office
AT · AT
Patent Type
Patents
Current Assignee / Owner
Filing Date
2022-08-22
Publication Date
2026-05-15
Estimated Expiration
2042-08-22

AI Technical Summary

Technical Problem

Existing methods for polarization compensation in free-space optical communication systems, particularly in aviation, rely on specific configurations of wave plates and are ineffective for quantum communications involving multiple frequency and intensity signals, as they fail to accurately compensate for polarization distortions caused by physical media like air or optical fibers.

Method used

A method involving the generation of electromagnetic waves, measurement of intensity after passing through a system of electromagnetic retarders, determination of polarization, and calculation of retarder positions to compensate for polarization distortions, using Mueller matrices and achromatic retarders to correct for distortions regardless of retarder type or quality, enabling compensation for weak optical beams and different wavelengths.

Benefits of technology

This solution effectively recovers the original polarization of electromagnetic waves, is versatile for various wavelengths and frequencies, and can handle single photon beams, enhancing quantum communication capabilities by providing generic and real-time compensation without relying on specific retarder configurations or quality.

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Abstract

A method for polarization compensation includes: (a) generating at least one beam of an electromagnetic wave; (b) sending the at least one beam through a physical medium; (c) receiving the at least one beam of an electromagnetic wave after it has traversed the physical medium; (d) measuring the intensity of the electromagnetic wave after it traverses a system of electromagnetic retarders; (e) determining the polarization of the electromagnetic wave after it traverses the system of electromagnetic retarders; (f) calculating the positions of the electromagnetic retarders to match the determined polarization of the electromagnetic wave with the polarization of the generated electromagnetic wave; and (g) compensating the effect of the physical medium on the polarization of the electromagnetic wave by setting the electromagnetic retarders according to the calculated positions.
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