Linearization enhanced operation of single-stage and dual-stage electro-optic modulators
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United States of America Patent
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Oct 5, 1999
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app pub date -
Feb 21, 1997
filing date -
Feb 21, 1997
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Abstract
A distortion circuit for linearizing third-, fifth- and seventh-order distortion components in a non-linear optical communications system includes at least one group of series connected diodes coupled to a common input terminal for receiving a signal source at one end and to an inductor and a capacitor at the other end, a resistance coupled to the common input terminal and a bias source for providing a bias current to the group of series connected diodes. The distortion circuit may be implemented as a predistortion circuit in the headend of the optical communications system or as a postdistortion circuit at the receiving end.
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