Optical: systems and elements – Optical modulator – Light wave temporal modulation
Reexamination Certificate
2006-04-04
2006-04-04
Schwartz, Jordan M. (Department: 2873)
Optical: systems and elements
Optical modulator
Light wave temporal modulation
C359S278000, C359S276000
Reexamination Certificate
active
07023601
ABSTRACT:
A method for modulating the E-field of an optical carrier signal utilizes a Mach-Zehnder modulator having a pair of independently controllable branches. A pair of independent branch drive signals VL(t) and VR(t) are derived. Each branch of the MZ modulator is driven with a respective one of the independent branch drive signals. By this means, a low cost conventional MZ modulator (interferometer) can be used to perform complex modulation of the E-field of the optical carrier. In some embodiments, this functionality is used to facilitate precompensation of optical impairments of an optical communications system.
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Beaulieu Yves
McGhan Douglas
O'Sullivan Maurice
(Ogilvy Renault)
Daniels Kent
Nortel Networks Limited
Schwartz Jordan M.
Stultz Jessica
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