Patent ID: 8773664

Claim:
A method for aligning a laser diode on a first substrate to a waveguide on a second substrate, the first substrate including an edge and a first surface adjoining the edge, the laser diode having an emission exit on the edge, the second substrate including a back side and a side edge, the waveguide having a waveguide input on the back side and configured to direct light along the side edge, the method comprising: aligning a first alignment mark set on the first substrate to a second alignment mark set on the second substrate, the first alignment mark set corresponding to the emission exit, being formed on the first surface, being visible from the edge, an alignment mark of the first alignment mark set occupying adjoining portions of both the first surface and the edge, the second alignment mark set corresponding to the waveguide input, being formed on the side edge, and being visible from the back side; and affixing the edge of the first substrate to the back side of the second substrate.