Enabling passive alignment for lens attach
Embodiments disclosed herein include photonics packages. In an embodiment, a photonics package comprises a photonics die and a plurality of v-grooves on the photonics die. In an embodiment, a lens array is optically coupled to a spot size converter on the photonics die. In an embodiment, the lens array comprises a main body and a plurality of lenses extending out from the main body.
1. A photonics package, comprising:
a photonics die;
a plurality of v-grooves on the photonics die; and
a lens array optically coupled to a spot size converter on the photonics die, wherein the lens array comprises:
a main body; and
a plurality of lenses extending out from the main body.
2. The photonics package of claim 1 , wherein individual ones of the plurality of lenses are disposed in different ones of the plurality of v-grooves.
3. The photonics package of claim 1 , wherein the lens array further comprises:
a pair of alignment posts extending out from the main body.
4. The photonics package of claim 3 , wherein the alignment posts and the plurality of lenses extend out from a first surface of the main body.
5. The photonics package of claim 3 , wherein the alignment posts extend out from a first surface of the main body, and wherein the plurality of lenses extend out from a second surface of the main body.
6. The photonics package of claim 3 , wherein the alignment posts are disposed in the v-grooves.
7. The photonics package of claim 1 , wherein the lens array further comprises:
a pair of holes through the main body;
a second body;
a pair of alignment posts extending out from the second body, wherein the alignment posts extend through the pair of holes through the main body.
8. The photonics package of claim 7 , wherein the second body is secured to the first body by an epoxy.
9. The photonics package of claim 7 , further comprising:
a pair of barriers between the pair of holes and the lenses.
10. The photonics package of claim 1 , further comprising:
a plurality of waveguides extending through the main body, wherein each waveguide is optically coupled to one of the plurality of lenses; and
a saw-tooth pattern on a bottom surface of the main body.
11. The photonics package of claim 10 , wherein the saw-tooth pattern sits into the plurality of v-grooves on the photonics die.
12. The photonics package of claim 1 , wherein the main body is L-shaped.
13. The photonics package of claim 12 , wherein cylindrical protrusions extend out from a surface of the main body, and wherein the plurality of lenses are at ends of the cylindrical protrusions.
14. The photonics package of claim 13 , wherein the cylindrical protrusions are set into the plurality of v-grooves on the photonics die.
15. The photonics package of claim 1 , further comprising:
cylindrical ridges on a first surface of the main body; and
a recessed surface on a second surface of the main body, wherein the lenses are on the recessed surface.
16. The photonics package of claim 15 , wherein the cylindrical ridges are set into the plurality of v-grooves on the photonics die.
17. A photonics package, comprising:
a photonics die;
a plurality of v-grooves in the photonics die; and
a lens array optically coupled to a spot size converter on the photonics die, wherein the lens array comprises:
a fiber housing;
a plurality of optical fibers in the fiber housing; and
a plurality of lenses at an end of the optical fibers.
18. The photonics package of claim 17 , wherein the plurality of optical fibers are set into the plurality of v-grooves on the photonics die.
19. The photonics package of claim 17 , wherein the plurality of lenses are discrete bodies from the plurality of optical fibers.
20. The photonics package of claim 17 , wherein the plurality of lenses are fabricated as part of the plurality of optical fibers.
21. A photonics system, comprising:
a board;
a package substrate coupled to the board;
a processor on the package substrate;
a photonics die on the package substrate and communicatively coupled to the processor, and a plurality of v-grooves on the photonics die; and
a lens array coupled to an edge of the photonics die.
22. The photonics system of claim 21 , wherein the lens array comprises:
a main body; and
a plurality of lenses extending out from the main body.
23. The photonics system of claim 22 , wherein individual ones of the plurality of lenses are disposed in different ones of the plurality of v-grooves.
24. The photonics system of claim 22 , wherein the lens array further comprises:
a pair of alignment posts extending out from the main body.
25. The photonics system of claim 22 , wherein the lens array further comprises:
a pair of holes through the main body;
a second body;
a pair of alignment posts extending out from the second body, wherein the alignment posts extend through the pair of holes through the main body.