Apparatus and methods for noise-feedback controlled optical...

Optical communications – Receiver – Including postcompensation

Reexamination Certificate

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Details

C398S202000, C398S208000, C398S210000, C398S212000, C398S213000, C398S038000

Reexamination Certificate

active

07840145

ABSTRACT:
Apparatus and methods for noise-feedback controlled optical systems are disclosed. In one aspect, an apparatus includes a receiver adapted to receive an optical signal and to convert the optical signal to a corresponding electrical signal, and a control circuit coupled to the receiver. The control circuit includes a monitoring component adapted to monitor a noise level of at least a portion of the electrical signal and to adjust a gain of the receiver based on the noise level. In an alternate aspect, an optical system includes a transmitter, a receiver, and a monitoring component adapted to monitor a noise level of at least a portion of the electrical signal and to adjust at least one of an amplification of the transmitter and a gain of the receiver based on the noise level.

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