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US 5,331,449 AGranted
Optical fiber tree and branch network for AM signal distribution
AssigneesGeneral Instrument Corporation, Corning Incorporated
InventorsDavid R. Huber, Douglas W. Hall, Edward F. Murphy
Life of this patent
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Abstract
The use of a doped optical fiber amplifier enables the transmission of multi-channel AM-VSB television signals. An Erbium doped fiber amplifier is disclosed. The amplifier is also useful for reducing second order distortion products produced in an amplitude modulated subcarrier optical communication system. The amplifier may be used in a tree and branch structure optical fiber television network.
Claims9
An optical fiber tree and branch network for distributing AM subcarrier multiplexed information comprising:
- a first optical fiber splitter;
- an input on said splitter for receiving a modulated light signal carrying multiplexed AM subcarriers;
- a plurality of outputs on said splitter for distributing said modulated light signal;
- and
- means for amplifying the modulated light signal with an optical amplifier.
2 more elements
Dependencies are inferred from the claim text.