Patent ID: 11870217
Assignee: LUMENTUM OPERATIONS LLC
Field: Optics (Instruments)
Classification: CPC H | IPC H

Claim 9:
10. A module, comprising:
a housing that includes an aperture; and
a vertical cavity surface emitting laser (VCSEL) device attached to the housing, the VCSEL device comprising:
a substrate layer;
a first set of epitaxial layers for a bottom-emitting VCSEL disposed on the substrate layer, the first set of epitaxial layers comprising:
a first set of mirrors; and
at least one first active layer; and

a second set of epitaxial layers for a top-emitting VCSEL disposed on the first set of epitaxial layers for the bottom-emitting VCSEL, the second set of epitaxial layers comprising:
a second set of mirrors; and
at least one second active layer,

wherein the top-emitting VCSEL and the bottom-emitting VCSEL are configured to emit light in opposite light emission directions, and
wherein a first emission area of the bottom-emitting VCSEL or a second emission area of the top-emitting VCSEL is aligned with the aperture of the housing.