Patent ID: 12015694

Abstract:
A communication system including a first detector; a first scattering medium; a second detector; an intensity modulator; a second scattering medium; wherein electromagnetic radiation transmitted from a first spot at the first scattering medium, and scattered by and through the first scattering medium and then the second scattering medium, forms a first speckle pattern detected by the second detector. The intensity modulator outputs a second spot of electromagnetic radiation representing the “ones” in a data stream at locations of the bright speckles (or at locations of the dark speckles to represent the “zeros” in the data stream) so that the electromagnetic radiation, transmitted from the second spot and scattered by and through the second scattering medium and then the first scattering medium, forms one or more second bright or dark speckles on the first detector. The data stream can be constructed from the second bright or dark speckles.