Optical device
AssigneeAvago Technologies General IP (Singapore) Pte. Ltd.
InventorsMark Jeffrey Dunn, Nicholas Turner, David John Kenneth Meadowcroft, David Healy
Life of this patent
Estimating the term…
Abstract
An optical device has a photodiode placed on a substrate. A guide is formed on the substrate so that it surrounds the photodiode with concentric positioning to an accuracy better than 5 μm. A ferrule of a ferrule assembly engages within the guide for automatic alignment with the photodiode without need for active alignment with monitoring of light signals.
Claims8
An optical device comprising a substantially planar lead-carrying substrate and an optical component mounted on the substrate, wherein the device further comprises a fibre guide surrounding the component and being configured to align a fibre termination retained within a ferrule assembly which is pushed into the fibre guide toward the component in a direction perpendicular to the substantially planar lead-carrying substrate, and wherein the fibre guide has a frusto-conical internal surface configuration with a decreasing internal diameter towards the component, the decreasing internal diameter corresponding to a frusto-conically tapered shape of the fibre termination.
An optical device assembly comprising:
- an optical device comprising a substantially planar lead-carrying substrate and an optical component mounted on the substrate, wherein the device further comprises a fibre guide surrounding the component and being configured to align a fibre termination secured within a ferrule assembly which is pushed into the fibre guide toward the component in a direction perpendicular to the substantially planar lead-carrying substrate, and wherein the fibre guide has a frusto-conical internal surface configuration with a decreasing internal diameter towards the component, the decreasing internal diameter corresponding to a frusto-conically tapered shape of the fibre termination;
- and a fibre termination receptacle secured to the guide in optical alignment with the optical component.
A method for connecting an optical fibre to an optical assembly, the optical fiber retained within a ferrule assembly and having a frusto-conical tip, the optical assembly comprising a substantially planar lead-carrying substrate, an optical component mounted on the substrate, a fibre guide surrounding the component, and a receptacle attached to the guide, the guide having a frusto-conical internal surface, the method comprising:
- plugging the ferrule assembly into the optical assembly until:
- the frusto-conical tip of the optical fibre retained within the ferrule assembly mates with the frusto-conical internal surface of the fibre guide;
- and
- a portion of the ferrule assembly mates with a mating portion of the receptacle.
Dependencies are inferred from the claim text.