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US 2025/0337501 A1Published application
Optical data signal receiver
AssigneeTop Integrated Circuits Ltd
InventorsPenelope GOULD, Patrick RICHARD
Life of this patent
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Abstract
An assembly of electronic components for reception of data using an optical fibre wherein data is received in bursts, and wherein the assembly includes: a photodiode; a transimpedance amplifier coupled to the photodiode, wherein a gain of the transimpedance amplifier is adjusted based on a level of a gain control signal.
Claims14
An assembly of electronic components for reception of data using an optical fiber wherein data is received in bursts, said assembly comprising:
- a photodiode;
- a transimpedance amplifier coupled to said photodiode, wherein a gain of said transimpedance amplifier is adjusted based on a level of a gain control signal, said transimpedance amplifier comprising;
- a first amplifier;
- and
- a network of electronic components presenting an impedance between two terminals, wherein one terminal of said network of electronic components presenting said impedance is coupled to an output of said first amplifier and another terminal of said network of electronic components presenting said impedance is coupled to an input of said first amplifier;
- and
- a received input signal sensor for sensing a received input signal level and for providing said gain control signal, wherein said received input signal sensor is configured to provide a first control signal, said first control signal being varied according to said received input signal level, said received input signal sensor further comprising:
- an integrator or filter for smoothing said first control signal, an output of said integrator or filter being said gain control signal, and
- wherein a settling time constant of said received input signal sensor is continuously variable, and said time constant is varied dependent on a frequency of occurrence of symbol level transitions in said received signal.
6 more elements
A method for the reception of data using an optical fiber wherein data is received in bursts, said method comprising:
- providing a photodiode;
- providing a transimpedance amplifier coupled to said photodiode, wherein a gain of said transimpedance amplifier is adjusted based on a level of a gain control signal, said transimpedance amplifier comprising:
- a first amplifier;
- a network of electronic components presenting an impedance between two terminals, wherein one terminal of said network of electronic components presenting said impedance is coupled to an output of said first amplifier and another terminal of said network of electronic components presenting an impedance is coupled to an input of said first amplifier;
- and
- providing a received input signal sensor for sensing a received input signal level, wherein said received input signal sensor is configured to provide a first control signal, said first control signal being varied according to said received input signal level, wherein said received input signal sensor further comprises:
- an integrator or filter for smoothing said first control signal, an output of said integrator or filter being said gain control signal, and wherein a settling time constant of said received input signal sensor is continuously variable, and said time constant is varied dependent on a frequency of occurrence of symbol level transitions in said received signal.
4 more elements
Dependencies are inferred from the claim text.