Optical communications – Multiplex – Code division multiplexing
Reexamination Certificate
2005-02-18
2010-06-01
Liu, Li (Department: 2613)
Optical communications
Multiplex
Code division multiplexing
C398S078000, C398S140000, C398S183000, C398S188000, C398S189000, C398S212000
Reexamination Certificate
active
07729616
ABSTRACT:
Apparatus and system for transmitting and receiving optical code division multiple access data over an optical network. The apparatus comprises a spectral phase decoder for decoding the encoded optical signal to produce a decoded signal, a time gate for temporally extracting a user signal from the decoded signal, and a demodulator that is operable to extract user data from the user signal. The system preferably comprises a source for generating a sequence of optical pulses, each optical pulse comprising a plurality of spectral lines uniformly spaced in frequency so as to define a frequency bin, a data modulator associated with a subscriber and operable to modulate the sequence of pulses using subscriber data to produce a modulated data signals and a Hadamard encoder associated with the data modulator and operable to spectrally encode the modulated data signal to produce an encoded data signal.
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Banwell Thomas Clyde
Delfyett Peter
Etemad Shahab
Galli Stefano
Jackel Janet Lehr
Feig Philip J.
Liu Li
Telcordia Technologies Inc.
University of Central Florida
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