Analog modulation of optical signals

Details Analog modulation of optical signals Analog modulation of optical signals

2006-12-05

2006-12-05

Phan, Hanh (Department: 2613)

Optical communications

Transmitter

Having particular modulation

C398S182000, C398S185000, C398S186000, C398S187000, C398S188000, C398S190000, C398S191000, C398S192000, C398S102000, C398S161000, C398S158000, C398S159000, C398S091000

Reexamination Certificate

active

07146109

ABSTRACT:
An optically modulated signal is generated for use in transporting data by generating a so-called sub-carrier modulated optical signal and, then, vector modulating the sub-carrier modulated optical signal to yield the desired modulated optical signal for transmission. The vector modulation includes a phase component and an amplitude component. In one specific embodiment of the invention, an apparatus for use in generating a modulated optical signal includes a generator to generate a sub-carrier modulated optical signal including an optical carrier and at least one sub-carrier and an analog vector modulator coupled to receive both the sub-carrier modulated optical signal from the generator and a data signal. The analog vector modulator generates an output optical signal by phase modulating and/or amplitude modulating the sub-carrier of the received optical signal in response to the data signal.

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