Relating to photonic integrated circuits
AssigneeAdvanced Micro Foundry Pte. Ltd.
InventorsChao Li, Patrick Guo-Qiang Lo
Life of this patent
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Abstract
The present invention relates of a photonic integrated and a method of fabricating a photonic integrated chip, PIC, configured for alignment and attachment of a laser diode in a predetermined position in which light from the laser diode is aligned with an input of the PIC; wherein the photonic chip comprises an asymmetric alignment assembly for receiving and aligning the laser diode in the predetermined position; and wherein the input comprises a coupler for receiving a laser beam from the laser diode in use.
Claims16
A photonic integrated chip, PIC, configured for alignment and attachment of a laser diode in a predetermined position in which light from the laser diode is aligned with an input of the PIC;
- wherein the photonic chip comprises an asymmetric alignment arrangement for receiving and aligning the laser diode in the predetermined position,
- wherein the input comprises a coupler for receiving a laser beam from the laser diode in use,
- wherein the asymmetric alignment arrangement comprises a plurality of alignment keys configured to align the attachment of the laser diode in the predetermined position,
- wherein at least one pair of alignment keys are asymmetric relative to one another,
- wherein the pair of alignment keys are elongate and run along a direction substantially parallel to the laser beam in use, wherein the pair of alignment keys include a gap between them defining a channel through which the laser waveguide can be aligned,
- wherein the clap includes a central region having a uniform profile and two sections at either end, each having a respective first irregular profile and second irregular profile, and
- wherein the first irregular profile of one of the pair is juxtaposed to the second irregular profile of the other of the pair.
A method of fabricating a photonic integrated chip, PIC,
- adapted to receive a laser diode in a predetermined position, the method comprising:
- forming from a first material a substrate, the substrate comprising an asymmetric alignment arrangement defining the predetermined position;
- forming from at least one second material a chip for a function and having a coupler for receiving a laser beam in use;
- forming a plurality of alignment keys configured to align the attachment of the laser diode in the predetermined position;
- forming at least one pair of alignment keys to be asymmetric relative to one another,
- forming the pair of alignment keys as elongate elements that run along a direction substantially parallel to the laser beam in use;
- forming the pair of alignment keys to include a gap between them defining a channel;
- forming the gap to include a central region having a uniform profile and two sections at either end, each having a respective first irregular profile and second irregular profile;
- and
- forming the first irregular profile of one of the pair to be juxtaposed to the second irregular profile of the other of the pair.
Dependencies are inferred from the claim text.