Optical receiver with critical damping resistor
AssigneeNEC Corporation
InventorYoshihiro Uda
Life of this patent
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Abstract
An optical receiver includes a light-receiving element, a bias circuit, an output circuit, and a damping resistor. The light-receiving element converts an optical signal into an electrical signal. The bias circuit applies a DC bias voltage to the light-receiving element. The output circuit outputs, from an output terminal, a voltage corresponding to an optical current generated by the light-receiving element. The damping resistor is connected between the light-receiving element and the output terminal in the output circuit and has a resistance set to serve as a critical damping condition in combination with a junction capacitance and a lead inductance of the light-receiving element.
Claims4
An optical receiver comprising:
- a light-receiving element for converting an optical signal into an electrical signal;
- a bias circuit for applying a DC bias voltage to said light-receiving element;
- an output circuit for outputting, from an output terminal, a voltage corresponding to an optical current generated by said light-receiving element;
- and
- a damping resistor connected between said light-receiving element and said output terminal in said output circuit and having a resistance set to serve as a critical damping condition in combination with a junction capacitance and a lead inductance of said light-receiving element.
Dependencies are inferred from the claim text.