Digital optical transmitter
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United States of America Patent
Stats
-
Feb 11, 2003
Grant Date -
Mar 21, 2002
app pub date -
Nov 29, 2001
filing date -
Jun 22, 1998
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A cable television system (100) having forward and reverse paths includes, in the reverse path, a digital optical transmitter (200) for receiving an RF signal, converting it to a digital signal, and adding a digital pilot tone thereto. A laser is driven in accordance with the summed digital signal to generate a digital optical signal representative of the pilot tone and the RF signal. The cable television system (100) also includes an optical receiver (305)for receiving the digital optical signal and recovering therefrom the RF signal and the pilot tone. The optical transmitter (200) and receiver (305) are coupled by fiber optic communication media (110).
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