Optical phase modulation

Details Optical phase modulation Optical phase modulation

2006-01-24

2006-01-24

Chan, Jason (Department: 2633)

Optical communications

Transmitter

Having particular modulation

C398S183000

Reexamination Certificate

active

06990296

ABSTRACT:
An optical modulator provides for preceding 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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PCT Search Report in International Application No. PCT/IB 02/05568, dated Apr. 25, 2003, 7 pages.

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