Optical communications – Transmitter – Having particular modulation
Reexamination Certificate
2008-04-29
2008-04-29
Chan, Jason (Department: 2613)
Optical communications
Transmitter
Having particular modulation
C398S193000, C398S186000, C398S188000, C398S159000
Reexamination Certificate
active
10644235
ABSTRACT:
Apparatus for creating a communication signal, comprising a modulator adapted to: modulate a first and a second beam of continuous wave electromagnetic radiation with a source signal, assemble modulated portions of the first and second beams into a first electromagnetic radiation signal of interposed regular and alternate data bit sequences comprising asserted non return to zero coded data bits, each of the data bit sequences being interposed by unasserted data bits, in which mutually adjacent asserted data bits are conjoined, and assemble modulated portions of the first and second beams into a second electromagnetic radiation signal of interposed regular and alternate data bar bit sequences comprising asserted non return to zero coded data bar bits representing the unasserted data bits, each of the data bar bit sequences being interposed by unasserted data bar bits representing the asserted data bits, in which mutually adjacent asserted data bar bits are conjoined. Such apparatus for creating a communication signal, further comprising means for modulating the first electromagnetic radiation signal with the source signal to shift the phase of the alternate data bit sequences; and means for modulating the second electromagnetic radiation signal with the source signal to shift the phase of the alternate data bar bit sequences. Methods for creating communication signals.
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Gill Douglas M.
Korotky Steven K.
Chan Jason
Curs Nathan
Lucent Technologies - Inc.
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