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.
Claims26
A system for simultaneously transmitting multifrequency signals comprising:
- a laser including a shared gain section and an addressable gain section;
- a first group of signals modulating said addressable gain section of said laser producing a plurality of information bearing wavelength division multiplexed channels;
- and
- a second signal modulating said shared gain section of said laser such that each of said plurality of information bearing wavelength multiplexed channels is modulated with said second signal.
A method for transmitting multiple information-bearing wavelength division multiplexed optical channels modulated with a second group of signals using a laser having an addressable modulator section and a shared gain section, said method comprising the steps of:
- modulating each addressable gain section of said laser with one of a first group of signals producing said multiple wavelength division multiplexed channels;
- and
- modulating said shared modulator section with a second group of signals such that each of said multiplexed channels is modulated with said second group of signals.
Dependencies are inferred from the claim text.