Intel Corporation

Bhushan Asuri

William J Chimitt

Taesub Ty Yoon

Anush A Krishnaswami

Ty Yoon

Disclosed are a system, method and device for generating an equalized signal from an input signal. Symbols in the equalized signal may be detected on each of a sequence of symbol intervals to recover a symbol value in the symbol interval. A feedback coefficient may be applied to a symbol value recovered in a previous symbol interval to generate the equalized signal in a current symbol interval. The feedback coefficient may be generated based, at least in part, on an estimated error associated with the equalized signal. The estimated error associated with the equalized output signal from among a plurality of candidate estimated error values.

Feedback filter

A method, system, and electrical circuit for determining a magnitude of a modulation current provided to a laser device based upon an approximated slope efficiency, wherein the approximated slope efficiency is based upon at least one discrete incremental change in a bias current to the laser device and at least one change in output power from the laser device.

Laser driver circuit and system

Described are methods and devices for processing a signal transmitting symbols which are temporally spaced on symbol intervals. The signal may be tapped at fractional symbol intervals to provide a plurality of signal taps at the fractional symbol intervals. Each of a plurality of coefficients may be applied to a corresponding one of the signal taps to generate an equalized signal. For at least one of the signal taps, the corresponding coefficient may be updated no more frequently than once per symbol interval.

Filter with signal taps temporally spaced at fractional symbol intervals

Described is a laser driver circuit to generate a bias current based, at least in part, upon a reference average power signal and a measured average power signal, and to generate a modulation current based, at least in part, upon a reference swing power and a measured swing power signal.

A laser driver circuit to provide a current signal to power a laser device is described. A bias current provided to the laser device may be changed while changes in the output power of a light signal from the laser device is monitored. A slope efficiency associated with the laser device may be determined based upon the changes in the bias current and changes in the output power.

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Oak Park, CA, United States of America

Bhushan Asuri