Distributed amplifier optical modulators

Details Distributed amplifier optical modulators Distributed amplifier optical modulators

2006-02-27

2008-11-11

Pak, Sung H (Department: 2874)

Optical waveguides

Temporal optical modulation within an optical waveguide

Electro-optic

C385S003000

Reexamination Certificate

active

07450787

ABSTRACT:
High speed optical modulators can be made of k modulators connected in series disposed on one of a variety of semiconductor substrates. An electrical signal propagating in a microwave transmission line is tapped off of the transmission line at regular intervals and is amplified by k distributed amplifiers. Each of the outputs of the k distributed amplifiers is connected to a respective one of the k modulators. Distributed amplifier modulators can have much higher modulating speeds than a comparable lumped element modulator, due to the lower capacitance of each of the k modulators. Distributed amplifier modulators can have much higher modulating speeds than a comparable traveling wave modulator, due to the impedance matching provided by the distributed amplifiers.

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Authors: Ansheng Liu, Richard Jones, Ling Liao, Dean Samara-Rubio, Doron Rubin, Oded Cohen, Remus Nicolaescu, Mario Paniccia Title: A High-Speed Silicon Optical Modulator Based on a Metal-Oxide-Semiconductor Capacitor Nature Publishing Group, vol. 427 Feb. 12, 2004.

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