Optoelectronic assembly for signal conversion
View Patent ↗Aspects of the present disclosure include an optoelectronic assembly with a housing that defines a cavity and includes a first component and a glass component disposed on an opposite side of the cavity from the first component. The glass component may include a first surface and a second surface and a lens located on the first surface. An optical transmitter and/or an optical receiver may be mechanically coupled to the first component within the cavity and oriented to emit optical signals through the glass component and the lens. Conductive traces may be located on the second surface of the glass component and electrically coupled to the optical transmitter and/or the optical receiver. An electronic component may be coupled to at least one of the conductive traces.
1. An optoelectronic assembly, comprising:
a housing that defines a cavity, wherein the housing comprises a first component and a glass component disposed on an opposite side of the cavity from the first component, and wherein the glass component includes a first surface and a second surface;
a lens located on the first surface of the glass component;
an optical transmitter positioned within the cavity and oriented to emit optical signals through the glass component and the lens;
an optical receiver positioned within the cavity;
a plurality of conductive traces located on the second surface of the glass component; and
an electronic component coupled to the conductive traces;
a printed circuit board (PCB) positioned against the glass component and electrically coupled to the conductive traces with an electrical coupler extending from the conductive traces to an interior layer inside of the PCB;
wherein a first side of the optical transmitter is electrically coupled to the conductive traces and an oppositely positioned second side is mechanically coupled to the first component; and
wherein a first side of the optical receiver is electrically coupled to the conductive traces and an oppositely positioned second side is mechanically coupled to the first component.
2. The optoelectronic assembly of claim 1 , wherein the first component comprises a metal with a coefficient of thermal expansion less than 20 ppm/° C.
3. The optoelectronic assembly of claim 1 , wherein the first component comprises a nickel-cobalt ferrous alloy.
4. The optoelectronic assembly of claim 1 , wherein at least one of the conductive traces includes a first portion located within the cavity and a second portion located outside of the cavity.
5. The optoelectronic assembly of claim 4 , wherein the at least one of the conductive traces electrically couples at least one of the optical transmitter, the optical receiver or at least one of the electronic components to circuitry external to the cavity.
6. The optoelectronic assembly of claim 1 , wherein the cavity is hermetically sealed or semi-hermetically sealed.
7. The optoelectronic assembly of claim 1 , wherein the first surface of the glass component includes an etched feature for waveguide alignment.
8. The optoelectronic assembly of claim 1 , wherein the first component and the glass component are substantially parallel to each other, and wherein the housing further comprises a third component that spaces the first component and the glass component apart from each other, further wherein the first component and the third component are laser welded together.
9. The optoelectronic assembly of claim 8 , wherein the first and third components each comprise a metal or metal alloy, the optoelectronic assembly further comprising glass frit that mechanically couples the glass component to the third component.
10. The optoelectronic assembly of claim 8 , wherein the first and third components comprise a metal or metal alloy, the optoelectronic assembly further comprising benzocyclobutene (BCB) epoxy that mechanically couples the glass component to the third component.
11. The optoelectronic assembly of claim 1 , further comprising a getter disposed within the cavity.
12. The optoelectronic assembly of claim 11 , wherein the getter comprises at least one of a metal or a polymer.
13. The optoelectronic assembly of claim 1 , further comprising a film coupled to the glass component in an optical path of the optical transmitter, wherein the optical path passes through the film and the lens and wherein the film is configured to filter optical signals that pass through the film.
14. An optoelectronic module, comprising:
an optoelectronic assembly that includes:
a housing that defines a cavity, wherein the housing comprises a first component and a glass component disposed on an opposite side of the cavity from the first component, and wherein the glass component includes a first surface and a second surface;
a lens located on the first surface of the glass component;
an optical transmitter positioned within the cavity and oriented to emit optical signals through the glass component and the lens;
an optical receiver positioned within the cavity;
a plurality of conductive traces located on the second surface of the glass component and electrically coupled to the optical transmitter and the optical receiver, wherein at least one of the conductive traces includes a first portion located within the cavity and a second portion located outside of the cavity; and
an electronic component coupled to at least one of the plurality of conductive traces; and
a printed circuit board (PCB) positioned directly against the glass component and electrically coupled to the second portion of the at least one of the conductive traces located outside of the cavity with an electrical coupler extending from the second portion of the at least one of the conductive traces to an interior layer inside of the PCB;
wherein a first side of the optical transmitter or the optical receiver is electrically coupled to the conductive traces and an oppositely positioned second side of the optical transmitter or the optical receiver is mechanically coupled to the first component.
15. The optoelectronic module of claim 14 , wherein the at least one of the conductive traces electrically couples at least one of the optical transmitter, the optical receiver or the electronic component to the PCB.
16. The optoelectronic module of claim 14 , further comprising a solder joint that couples the PCB to the second portion of the at least one of the conductive traces located outside of the cavity.
17. The optoelectronic module of claim 14 , wherein the cavity is hermetically sealed or semi-hermetically sealed.
18. The optoelectronic module of claim 14 , further comprising a getter disposed within the cavity.
19. The optoelectronic module of claim 14 , wherein the first component and the glass component are substantially parallel to each other, the housing further comprising a third component that spaces the first component and the glass component apart from each other.
20. An optoelectronic assembly, comprising:
a first component and a glass component that define a cavity;
a lens located on a first surface of the glass component;
an optoelectronic component positioned within the cavity, the optoelectronic component comprising an optical transmitter or an optical receiver;
conductive traces located on a second surface of the glass component;
an electronic component coupled to the conductive traces;
a printed circuit board (PCB) positioned against the glass component; and
an electrical coupler extending from the conductive traces to an interior layer inside of the PCB;
wherein a first side of the optoelectronic component is electrically coupled to the conductive traces and an oppositely positioned second side of the optoelectronic component is mechanically coupled to the first component.