Patent ID: 11960118
Assignee: ADVANCED MICRO FOUNDRY PTE. LTD.
Field: Optics (Instruments)
Classification: CPC G  H | IPC G

Claim 8:
9. 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.