Discrete bootstrapping in an optical receiver to prevent signal feedback
AssigneeFinisar Corporation
InventorDarin James Douma
Life of this patent
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AssigneeFinisar Corporation
InventorDarin James Douma
Estimating the term…
An optical receiver assembly that is configured to avoid the introduction of feedback in an electrical signal converted by the assembly is disclosed. In one embodiment, an optical receiver assembly is disclosed, comprising a capacitor, an optical detector provided with a power supply being mounted on a top electrode of the capacitor, and an amplifier mounted on the reference surface. The assembly further includes an isolator interposed between the reference surface and the capacitor, wherein the isolator includes a bottom layer of dielectric material that is affixed to a portion of the reference surface, and a metallic top plate that is electrically coupled both to a ground of the amplifier and to the capacitor. This configuration bootstraps the amplifier ground to the amplifier input via the photodiode top electrode of the capacitor to cancel out feedback signals present at the amplifier ground.
An optical transceiver module, comprising:
An optoelectronic receiver package, comprising:
The optoelectronic receiver package as defined in claim 15, wherein the electrical path provides a conduit by which feedback signals present at the ground of the transimpedance amplifier are transmitted to the input of the transimpedance amplifier to cancel at least a portion of the feedback signal.
Dependencies are inferred from the claim text.