Optical: systems and elements – Optical modulator – Light wave temporal modulation
Patent
1998-06-25
2000-01-11
Grimm, Siegfried H.
Optical: systems and elements
Optical modulator
Light wave temporal modulation
359187, 359249, 385 2, G02F 100
Patent
active
060142413
ABSTRACT:
A pilot signal is generated and injected into the input (108) of a signal modulator (104). The harmonic signal of a pilot signal produced at the output (110) and due to the non-linear transfer function of the signal modulator (104) is coherently sampled in the time domain to produce a plurality of digital samples defining a digital sample signal. The digital sample signal is cross-correlated with a reference signal having a phase based on the pilot signal to produce a cross-correlation signal. The bias voltage at which the signal modulator (104) is biased is adjusted to minimize the difference between the phase of the correlation signal and an optimum phase value corresponding to a linear mode of operation of the signal modulator 104.
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Cooney Thomas Edward
Winter Gary Edwin
Grimm Siegfried H.
Tacan Corporation
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