Optical receiver using infinite impulse response decision feedback equalization
AssigneeInternational Business Machines Corporation
InventorsJonathan E. Proesel, Alexander V. Rylyakov, Clint L. Schow, Yurii A. Vlasov
Life of this patent
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Abstract
A technique is provided for configuring an optical receiver. A photo detector is connected to a load resistor, and the photo detector includes an internal capacitance. A current source is connected through a switching circuit to the load resistor and to the photo detector. The current source is configured to discharge the internal capacitance of the photo detector. The switching circuit is configured to connect the current source to the internal capacitance based on a previous data bit.
Claims18
An optical receiver, comprising:
- a photo detector connected to a load resistor, the photo detector comprising an internal capacitance;
- and
- a current source connected through a switching circuit to the load resistor and to the photo detector, the current source configured to discharge the internal capacitance of the photo detector;
- wherein the switching circuit is configured to connect the current source to the internal capacitance based on a previous data bit.
A method for an optical receiver, the method comprising:
- generating a current by a photo detector connected to a load resistor, the photo detector comprising an internal capacitance;
- wherein a current source is connected through a switching circuit to the load resistor and to the photo detector;
- connecting, by the switching circuit, the current source to the internal capacitance based on a previous data bit;
- and
- discharging, by the current source, the current on the internal capacitance based on the switching circuit connecting the current source to the internal capacitance.
Dependencies are inferred from the claim text.