US 12,689,444 B2 · Opto-electronic assemblies

Abstract

Assemblies of electronic components for reception of data using optical fibre and methods for providing same. Assemblies comprise a photodiode; an amplifier coupled to the photodiode; at least one feedback resistor coupled between the input and output of the amplifier; an arrangement of at least two MOS transistors of same channel polarity and configured in parallel with the feedback resistor(s); a system for sensing received input signal level and applying a bias voltage to gates of the MOS transistors, the bias voltage varied according to the received input signal level to control a resistance apparent through the arrangement of MOS transistors; at least one capacitor configured to couple signals from the amplifier output to a gate of at least one of the MOS transistors; and at least one bias resistor configured to couple the bias voltage to a gate of at least one of the MOS transistors.

Claims16

Dependent claims

An assembly of electronic components for reception of data using an optical fibre, wherein said assembly comprises:

a photodiode;
an amplifier coupled to said photodiode;
at least one feedback resistor coupled between an output and an input of said amplifier;
an arrangement of at least two MOS transistors, wherein said at least two MOS transistors are of the same channel polarity, and wherein said at least two MOS transistors are configured to be in parallel with said at least one feedback resistor;
a system for sensing a received input signal level, wherein said system is configured to apply a bias voltage to gates of said at least two MOS transistors, said bias voltage being varied by said system according to said received input signal level in a manner to control a resistance apparent through said arrangement of said at least two MOS transistors;
at least one capacitor configured to couple signals from an output of said amplifier to a gate of at least one of said at least two MOS transistors;
and
at least one bias resistor configured to couple said bias voltage to a gate of at least one of said at least two MOS transistors.

5 more elements

A method for providing an assembly of electronic components for reception of data using an optical fibre, wherein said method comprises:

providing a photodiode;
providing an amplifier coupled to said photodiode;
providing at least one feedback resistor coupled between an output and an input of said amplifier;
providing an arrangement of at least two MOS transistors, wherein said at least two MOS transistors are of the same channel polarity, and wherein said at least two MOS transistors are configured to be in parallel with said resistor;
providing a system for sensing a received input signal level, wherein said system is configured to apply a bias voltage to gates of said at least two MOS transistors, said bias voltage being varied by said system according to said received input signal level in a manner to control a resistance apparent through an arrangement of said at least two MOS transistors;
providing at least one capacitor configured to couple signals from an output of said amplifier to a gate of at least one of said at least two MOS transistors;
and
providing at least one bias resistor configured to couple said bias voltage to a gate of at least one of said at least two MOS transistors.

5 more elements

Dependencies are inferred from the claim text.

Opto-electronic assemblies

Life of this patent

Opto-electronic assemblies

Life of this patent

Abstract

Claims16