H - Electricity – 04 – B
Patent
H - Electricity
04
B
H04B 10/02 (2006.01) H03F 1/32 (2006.01) H04B 10/155 (2006.01)
Patent
CA 2051227
ABSTRACT OF THE DISCLOSURE A modulating signal is predistorted to linearize the output of an optical intensity modulator. The modulating signal is split into first and second paths. In the first path, the signal is phase shifted. In the second path, distortion components are introduced. The phase shifted signal from the first path is then combined with the distorted signal from the second path to provide a predistorted signal for use in modulating a light source. The distortion generator can comprise a diode pair coupled with opposite polarities in parallel. Both diodes are forward biased, and the pair is coupled in series with the input signal to provide the desired predistortion.
General Instrument Corporation
Ridout & Maybee Llp
LandOfFree
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