Optical communications – Receiver
Reexamination Certificate
2011-06-28
2011-06-28
Phan, Hanh (Department: 2613)
Optical communications
Receiver
C398S188000, C398S208000, C398S209000, C398S212000, C398S213000, C385S024000, C385S037000
Reexamination Certificate
active
07970289
ABSTRACT:
An optical receiver apparatus and methods for mitigating intersymbol interference (ISI) in a differentially-encoded modulation transmission system by controlling constructive and destructive transfer functions. The receiver includes a bandwidth control element for controlling transfer function bandwidth, a transfer phase controller for controlling transfer function phase and/or an imbalancer for imbalancing the transfer functions for compensating for intersymbol interference and optimizing the quality of the received optical signal.
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Heffner Brian L.
Malouin Christian
Schmidt Theodore J.
Fish & Richardson P.C.
Opnext Subsystems, Inc.
Phan Hanh
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