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US 5,394,489 AGranted
Wavelength division multiplexed optical communication transmitters
AssigneeAT&T Corp.
InventorThomas L. Koch
Life of this patent
Estimating the term…
Abstract
A wavelength-division-multiplexed transmitter has a single modulator modulating the output of an array of individually actuable semiconductor lasers integrated onto the same substrate as the modulator. An optical combiner integrated onto the same substrate between each of the lasers and the single modulator combines the outputs of the lasers. One or more of the lasers are activated as desired for wavelength division multiplexing.
Claims18
A wavelength-division multiplexed transmitter, comprising:
- a substrate;
- a plurality of individually actuable lasers integral with said substrate;
- an optical modulator integral with said substrate;
- and
- an optical combiner integral with said substrate and connecting each of said lasers with said modulator;
- said lasers each defining a different frequency exclusive of said combiner.
3 more elements
Dependencies are inferred from the claim text.