Wafer based optical chassis and associated methods
View Patent ↗An optical chassis includes a mount substrate an optoelectronic device on the mount substrate, a spacer substrate, and a sealer substrate. The mount substrate, the spacer substrate and the sealer substrate are vertically stacked and hermetically sealing the optoelectronic device. An external electrical contact for the optoelectronic device is provided outside the sealing. At least part of the optical chassis may be made on a wafer level. A passive optical element may be provided on the sealer substrate or on another substrate stacked and secured thereto.
1. An optical apparatus, comprising:
a mount substrate;
an optoelectronic device on the mount substrate;
a spacer substrate, an interior surface of the spacer substrate being angled and being coated with a reflective material;
a sealer substrate, the mount substrate, the spacer substrate and the sealer substrate being vertically stacked and hermetically sealing the optoelectronic device; and
an external electrical contact for the optoelectronic device provided outside the sealing.
2. The optical apparatus as claimed in claim 1 , wherein the electrical contact includes a metalized trench.
3. The optical apparatus as claimed in claim 2 , wherein the mount substrate and the spacer substrate are flush.
4. The optical apparatus as claimed in claim 2 , further comprising a ledge formed by differing widths between the mount substrate and the spacer substrate, the metalized trenches being in the ledge.
5. The optical apparatus as claimed in claim 1 , further comprising a ledge formed by differing widths between the mount substrate and the spacer substrate, the electrical contact for the optoelectronic device being on the ledge.
6. The optical apparatus as claimed in claim 1 , wherein the electrical contact includes a conductive via on a bottom surface of the mount substrate, the conductive via configured to receive a conductive structure.
7. The optical apparatus as claimed in claim 6 , wherein the conductive structure is a solder ball.
8. The optical apparatus as claimed in claim 1 , further comprising a passive optical element formed on a surface of the sealer substrate.
9. The optical apparatus as claimed in claim 1 , wherein electrical contact further comprises a conductive material on at least two non-parallel surfaces of the mount substrate.
10. The optical apparatus as claimed in claim 1 , further comprising, above the sealer substrate, an optical block having a passive optical element on at least one surface thereof.
11. The optical apparatus as claimed in claim 1 , further comprising, above the sealer substrate, another spacer substrate.
12. The optical apparatus as claimed in claim 1 , wherein at least two substrates of the mount substrate, the spacer substrate and the sealer substrate are of materials with approximately same coefficients of thermal expansion.
13. The optical apparatus as claimed in claim 12 , wherein one of the at least two substrates is silicon and another of the at least two substrate is Pyrex.
14. The optical apparatus as claimed in claim 1 , further comprising, on a terminal surface of the optical apparatus, a mating feature for mating the optical apparatus with another structure.
15. The optical apparatus as claimed in claim 14 , wherein the another structure is a ferrule.
16. An optical apparatus, comprising:
a mount substrate;
an optoelectronic device on the mount substrate;
a spacer substrate;
a sealer substrate, the mount substrate, the spacer substrate and the sealer substrate being vertically stacked and hermetically sealing the optoelectronic device;
an isolator stack above the sealer substrate, the isolator stack including first and second polarizers and a Faraday rotator sandwiched between the first and second polarizers; and
an external electrical contact for the optoelectronic device provided outside the sealing.
17. An optical apparatus, comprising:
a mount substrate;
an optoelectronic device on the mount substrate;
a spacer substrate;
a sealer substrate, the mount substrate, the spacer substrate and the sealer substrate being vertically stacked and hermetically sealing the optoelectronic device; and
an external electrical contact for the optoelectronic device provided outside the sealing, wherein the electrical contact includes a metalized trench; a ledge formed by differing widths between the mount substrate and the spacer substrate, the metalized trench being in the ledge.
18. The optical apparatus as claimed in claim 17 , wherein the mount substrate and the spacer substrate are flush.
19. An optical apparatus, comprising:
a mount substrate;
an optoelectronic device on the mount substrate;
a spacer substrate;
a sealer substrate, the mount substrate, the spacer substrate and the sealer substrate being vertically stacked and hermetically sealing the optoelectronic device;
an external electrical contact for the optoelectronic device provided outside the sealing; and
a ledge formed by differing widths between the mount substrate and the spacer substrate, the electrical contact for the optoelectronic device being on the ledge.
20. An optical apparatus, comprising:
a mount substrate;
an optoelectronic device on the mount substrate;
a spacer substrate;
a sealer substrate, the mount substrate, the spacer substrate and the sealer substrate being vertically stacked and hermetically sealing the optoelectronic device;
an external electrical contact for the optoelectronic device provided outside the sealing;
an optical element on a terminal surface of the optical apparatus; and
a mating feature surrounding the optical element, the mating feature for mating the optical apparatus with another structure and providing separation between the optical element and the another structure.
21. The optical apparatus as claimed in claim 20 , wherein an interior surface of the spacer substrate is angled and has a reflective material thereon.