Optical communications – Multiplex – Wavelength division or frequency division
Reexamination Certificate
2009-11-16
2011-11-01
Curs, Nathan (Department: 2613)
Optical communications
Multiplex
Wavelength division or frequency division
C398S079000, C398S151000, C380S256000, C380S278000, C713S171000
Reexamination Certificate
active
08050566
ABSTRACT:
A system and a method for quantum key distribution between a transmitter and a receiver over wavelength division multiplexing (WDM) link are disclosed. The method includes providing one or more quantum channels and one or more conventional channels over the WDM link; assigning a different wavelength to each of the one or more quantum channels and each of the one or more conventional channels; transmitting single photon signals on each of the one or more quantum channels; and transmitting data on each of the one or more conventional channels. The data comprises either conventional data or trigger signals for synchronizing the transmission of the single photon signals on the quantum channels. All channels have wavelengths around 1550 nm. The WDM link can be a 3-channel WDM link comprising two quantum channels for transmitting single photon signals and one conventional channel for transmitting conventional data or triggering signals.
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Chan Kam Tai
Luo Yuhui
Curs Nathan
Schwegman Lundberg & Woessner, P.A.
The Chinese University of Hong Kong
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