Modulating retro-reflector optical communication using polarization differential signaling

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United States of America Patent

PATENT NO 8396373
APP PUB NO 20090279903A1
SERIAL NO

12413145

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Abstract

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A retroreflector coupled with a polarization rotator is provided according to some embodiments. The polarization rotator can be designed and/or configured to introduce a fraction of a wavelength phase difference in a received beam of light prior to reflecting the beam of light back toward the source of the light. By switching the state of the polarization rotator a communication signal can be modulated on the return beam of light.

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Patent Owner(s)

  • CUBIC CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
O'Brien, Jonathan R San Diego, US 2 4
Roes, Michael A San Diego, US 7 118

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