Optical: systems and elements – Optical modulator – Light wave temporal modulation
Reexamination Certificate
2006-04-25
2006-04-25
Sugarman, Scott J. (Department: 2873)
Optical: systems and elements
Optical modulator
Light wave temporal modulation
Reexamination Certificate
active
07034977
ABSTRACT:
A method and apparatus is provided for controlling the bias point of a Mach-Zehnder modulator. The method begins by applying a dither signal to a DC bias that is applied to a Mach-Zehnder modulator. A component of an optical output signal provided by the Mach-Zehnder modulator that is synchronous with the dither signal is detected. The dither signal is adjusted to maintain the detected component of the optical output signal at a substantially constant value.
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Harel Roey
Le Roy Donald V.
Pappas Dean
Shtengel Gleb
Stark Jason B.
Hanig Richard
Kodeos Communications
Mayer & Williams PC
Mayer, Esq. Stuart H.
Sugarman Scott J.
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