Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Patent
1990-11-05
1992-04-21
Coles, Sr., Edward L.
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
359181, 358 86, H04J 1402
Patent
active
051073609
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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Coles Sr. Edward L.
General Instrument Corporation
Lipsitz Barry R.
Negash Kinfe-Michael
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