Active feedback noise reduction for free space optical communications
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United States of America
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Mar 11, 2025
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N/A
app pub date -
Oct 22, 2024
filing date -
Oct 22, 2024
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Abstract
The present disclosure provides systems and methods for FSO systems using active feedback noise reduction for light transmitted through a variably refractive medium. A telescope receives an inbound beam of light. A detector system includes a routing system, a noise reduction system, and a first detector. The noise reduction system has a splitter, a second detector, a controller, and a modulator. The second detector generates a sampled signal from a first portion of the inbound beam. The controller generates a control signal based on the sampled signal. The modulator attenuates a second portion of the inbound beam based on the control signal before detection by the first detector, thereby reducing variable noise caused by the variably refractive medium.
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