Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Patent
1992-10-09
1996-01-02
Pascal, Leslie
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
332160, 375296, 455303, 359195, H04B 1008
Patent
active
054813891
ABSTRACT:
A postdistortion network for a receiver at a receiver location in an optical transmission system is disclosed. The receiver converts an optical signal carried over an optical transmission link to an RF signal. The postdistortion network includes an input terminal for receiving the RF signal and a distortion generator for generating a distortion signal from the RF signal. An adjusting circuit for adjusts the phase and amplitude of the distortion signal based on distortion at said receiver location. The adjusted distortion signal is combined with the RF signal in order to cancel or substantially suppress distortion in the RF input signal. The present invention permits individual receivers in an optical transmission system to be compensated for distortion which may be unique to that receiver location. A communications system including a predistortion network and a postdistortion network is also disclosed.
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Pidgeon Rezin E.
Rand Heather H.
Pascal Leslie
Scientific-Atlanta, Inc.
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