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US 10,320,488 B2Granted
Distributed traveling-wave Mach-Zehnder modulator driver
AssigneeElenion Technologies, LLC
InventorsRan Ding, Thomas Wetteland Baehr-Jones, Michael J. Hochberg, Alexander Rylyakov
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Abstract
A distributed traveling-wave Mach-Zehnder modulator driver having a plurality of modulation stages that operate cooperatively (in-phase) to provide a signal suitable for use in a 100 Gb/s optical fiber transmitter at power levels that are compatible with conventional semiconductor devices and conventional semiconductor processing is described.
Claims13
A driver amplifier for a distributed traveling-wave modulator comprising a plurality of driver amplifier stages, each driver amplifier stage comprising:
- a differential driver amplifier input for receiving a differential input signal from a data source or a previous stage;
- a first pair of emitter followers including termination resistors;
- a pre-amplifier comprising a differential pair;
- a buffer comprising a second pair of emitter followers;
- a splitter for splitting the input signal into first and second differential output signals;
- a differential driver modulator driver output for receiving the first differential output signal for driving a modulator segment;
- and
- a differential driver signal output for amplifying the second differential output signal for providing the amplified second differential output to a subsequent driver amplifier stage.
5 more elements
Dependencies are inferred from the claim text.