Secure optical communication system

Details Secure optical communication system Secure optical communication system

2008-07-29

2011-11-29

Sedighian, M. R. (Department: 2613)

Optical communications

Transmitter and receiver system

C398S141000, C398S152000, C398S183000, C398S039000, C380S255000, C380S256000

Reexamination Certificate

active

08068740

ABSTRACT:
In various embodiments, a secure optical communication system is disclosed. Such a system may include a photon-pair generation circuit configured to generate pairs of photons with each photon pair including a first-channel photon and a second-channel photon, a transmitting circuit configured to receive first-channel photons, and modulate the first-channel photons according to a stream of data using a first optical circulator to produce first-modulated photons, and a receiving circuit configured to receive second-channel photons, pass the second-channel photons through a complementary optical circulator to produce second modulated photons, and detect relative timing between the first-modulated photons and the second modulated photons to recover the stream of data.

REFERENCES:
patent: 5418905 (1995-05-01), Rarity et al.
patent: 5600126 (1997-02-01), Appel et al.
patent: 2004/0208638 (2004-10-01), Jansen
patent: 2006/0263096 (2006-11-01), Dinu et al.
patent: 2007/0230688 (2007-10-01), Tajima et al.

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