Optical: systems and elements – Optical modulator – Light wave temporal modulation
Reexamination Certificate
2005-09-27
2005-09-27
Spector, David N. (Department: 2873)
Optical: systems and elements
Optical modulator
Light wave temporal modulation
C359S238000, C359S239000
Reexamination Certificate
active
06950222
ABSTRACT:
An optical modulator includes a phase modulator configured to drive light with an NRZI-coded drive signal for phase modulation and an intensity modulator to modulate the intensity of a phase-modulated NRZI-coded optical signal received from the phase modulator. The operating point of the intensity modulator is set such that the output of the intensity-modulated optical signal is eliminated when the NRZI-coded optical signal is not varied.
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Ibe Hiroyuki
Miyachi Masahide
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Spector David N.
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