Importance

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Abstract

A system includes a modulating retroreflector. The modulating retroreflector includes one or more reflective surfaces configured to receive an optical signal and to provide a reflected optical signal. The modulating retroreflector also includes multiple modulators configured to modulate the optical signal and encode data onto the optical signal such that the reflected optical signal represents a reflected and modulated version of the optical signal. The multiple modulators are electrically connected in series. The system also includes a control circuit configured to generate a drive signal and to provide the drive signal to the multiple modulators in order to control the encoding of the data onto the optical signal.

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First Claim