Optical transmission of RF subcarriers in adjacent signal bands
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United States of America Patent
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Apr 21, 1992
Grant Date -
N/A
app pub date -
Nov 5, 1990
filing date -
Nov 5, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Apparatus is provided for optically transmitting a plurality of AM modulated RF subcarriers in adjacent octaves. A first laser is modulated to produce a first optical output signal containing a plurality of subcarriers in a first octave. A second laser is modulated to produce a second optical output signal containing a plurality of subcarriers in a second octave. The first output signal is optically filtered to attenuate distortion products falling in the second octave. The second output signal is optically filtered to attenuate distortion products falling in the first octave. The filtered first and second output signals are combined for communication over an optical transmission medium. Where the transmission medium is a single mode optical fiber, filtering can be accomplished using single mode transversal filters.
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