Optical communications – Transmitter – Having particular modulation
Reexamination Certificate
2007-03-27
2007-03-27
Leung, Christina (Department: 2613)
Optical communications
Transmitter
Having particular modulation
C398S193000
Reexamination Certificate
active
11298373
ABSTRACT:
An optical modulator provides for precoding of a high data rate phase modulated optical signal. According to one embodiment, the modulator includes a first phase modulator and a second phase modulator. The first phase modulator modulates an optical carrier signal according to a first data signal to generate a modulated optical signal. The second phase modulator modulates the modulated optical signal according to a time delayed version of its optical output signal. According to another embodiment, the modulator electrically precodes multiple data streams and modulates the precoded data streams using a series of phase modulators to generate a precoded optical data signal.
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Choudhary Seemant
Hoshida Takeshi
Baker & Botts L.L.P.
Leung Christina
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