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US 6,271,947 B1Granted
Simultaneous wavelength-division multiplexing and broadcast transmission system
AssigneeAT&T Corp.
InventorsPatrick P. Iannone, Kenneth C. Reichmann
Life of this patent
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Abstract
A system for simultaneously transmitting multifrequency signals including a laser light source having a shared gain section and an addressable gain section. A first group of signals modulating the addressable gain section of the laser produces a plurality of wavelength division multiplexed channels. The second group of signals modulates the shared gain section of the laser such that each of the multiplexed channels is modulated with the signals from the second group.
Claims15
An communication apparatus, comprising:
- a laser comprising a shared gain section and a plurality of addressable gain sections, the addressable gain sections adapted to be coupled to respective data sources;
- and
- a plurality of feedforward circuits coupled to each of the addressable gain sections and to the shared gain section.
Dependencies are inferred from the claim text.