Optical communications – Multiplex – Wavelength division or frequency division
Reexamination Certificate
2009-06-03
2010-06-22
Singh, Dalzid (Department: 2613)
Optical communications
Multiplex
Wavelength division or frequency division
C398S169000, C398S170000, C398S201000, C398S212000, C398S096000
Reexamination Certificate
active
07742700
ABSTRACT:
Systems and methods for encoding information in the topology of superpositions of helical modes of light, and retrieving information from each of the superposed modes individually or in parallel. These methods can be applied to beams of light that already carry information through other channels, such as amplitude modulation or wavelength dispersive multiplexing, enabling such beams to be multiplexed and subsequently demultiplexed. The systems and methods of the present invention increase the number of data channels carried by a factor of the number of superposed helical modes.
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Foley & Lardner LLP
New York University
Singh Dalzid
LandOfFree
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