Optical communications – Transmitter and receiver system – Including compensation
Reexamination Certificate
2006-06-21
2009-12-15
Vanderpuye, Ken N (Department: 2613)
Optical communications
Transmitter and receiver system
Including compensation
C398S140000, C398S158000, C398S163000, C327S317000, C330S296000
Reexamination Certificate
active
07634198
ABSTRACT:
A distortion circuit is provided for correcting the distortion from a nonlinear circuit element by generating a frequency dependent signal having a sign opposite to the distortion signal produced by the nonlinear circuit and substantially the same magnitude. The distortion circuit includes an input signal and a first nonlinear device coupled to the input signal for generating a first signal and where the first nonlinear device has a first bias level. Also included is a second nonlinear device different from same first nonlinear device and coupled to the first nonlinear device for modifying the first signal to produce an output second signal, the second nonlinear device having a second bias level. A bias control means is provided for adjusting the first and said second bias levels so that the magnitude, phase and frequency of the output second signal can be adjusted.
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Emcore Corporation
Leung Danny W
Vanderpuye Ken N
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