Optical communications – Transmitter – Having particular modulation
Reexamination Certificate
2005-06-15
2009-08-18
Phan, Hanh (Department: 2613)
Optical communications
Transmitter
Having particular modulation
C398S182000, C398S185000, C398S188000, C398S189000, C359S245000, C359S248000, C359S237000, C359S238000, C385S001000, C385S014000, C385S002000, C385S003000
Reexamination Certificate
active
07577367
ABSTRACT:
Optical techniques, devices and systems for combining duobinary modulation and optical subcarrier multiplexing in optical communication applications. An analog mixer is used to mix a duobinary signal for a data channel and a local oscillator signal to produce a modulation control signal for controlling the subsequent optical subcarrier multiplexing modulation. Various optical subcarrier multiplexing modulation techniques may be used including optical single sideband modulators and optical double sideband modulators.
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Fish & Richardson P.C.
Op Vista Incorporated
Phan Hanh
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