High speed, silicon-based electro-optic modulator

Details High speed, silicon-based electro-optic modulator High speed, silicon-based electro-optic modulator

2006-06-20

2006-06-20

Chan, Jason (Department: 2633)

Optical communications

Transmitter

Having particular modulation

C359S237000

Reexamination Certificate

active

07065301

ABSTRACT:
An electro-optic modulator arrangement for achieving switching speeds greater than 1 Gb/s utilizes pre-emphasis pulses to accelerate the change in refractive index of the optical waveguide used to form the electro-optic modulator. In one embodiment, a feedback loop may be added to use a portion of the modulated optical output signal to adjust the magnitude and duration of the pre-emphasis pulses, as well as the various reference levels used for modulated. For free carrier-based electro-optic modulators, including silicon-based electro-optic modulators, the pre-emphasis pulses are used to accelerate the movement of free carriers at the transitions between input signal data values.

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