Optical communications – Transmitter – Having particular modulation
Reexamination Certificate
2003-06-17
2008-08-26
Li, Shi K. (Department: 2613)
Optical communications
Transmitter
Having particular modulation
C396S182000, C396S154000, C396S203000, C380S256000
Reexamination Certificate
active
07418209
ABSTRACT:
The invention provides, according to its various embodiments, a method for secure communication that involves encoding and transmitting an optical communications signal that is encoded based on a multi-dimensional encoding technique. The multi-dimensional encoding technique includes multiple security layers and varies multiple physical characteristics of a communications signal. The multi-dimensional encoding technique may include at least one or more of encoding a phase of an optical communications signal, encoding a polarization of an optical communications signal, and encoding a frequency of an optical communications signal, or any combination thereof. According to embodiments of the invention, the encoding and/or any decoding of the optical communications signal may be carried out using one or more of an optical phase shift coding, a polarization multiplexing, and a multi-wavelength control. Multi-dimensional encoding and decoding keys are provided.
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Reingand Nadejda
Salamon Aviv
Shpantzer Isaac
Tseytlin Michael
CeLight, Inc.
Curs Nathan
Li Shi K.
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