Multi-lens optical components
View Patent ↗This disclosure generally relates to high-speed fiber optic networks that use light signals to transmit data over a network. The disclosed subject matter includes devices and methods relating to multi-lens optical components and/or optoelectronic subassemblies. In some aspects, devices and methods relate to an optical component including a housing defining a cavity and a lens array having a plurality of lenses on an optically transmissive portion of the housing. In some aspects, devices and methods relate to an optical component including a substrate; and a lens array on the substrate, the lens array having a plurality of discrete lenses.
1. An optoelectronic subassembly comprising:
a multi-channel header subassembly comprising:
a substrate; and
optoelectronic components coupled to or formed on the substrate, the optoelectronic components configured to transmit and/or receive multiple optical signals each corresponding to one channel; and
an optical component coupled to the header subassembly, the optical component comprising:
a circular housing extending between a housing top and a housing bottom, the housing top defining an aperture sized and shaped to receive a corresponding circular ferrule assembly such that the ferrule assembly is rotatable when positioned at least partially in the aperture;
a window in the aperture that is at least partially optically transmissive such that the window permits the optical signals to travel between the ferrule assembly and the header subassembly through the optical component positioned there between;
a lens array including lenses configured to convey the optical signals each corresponding to one channel; and
a cavity defined by the housing and the window, the cavity hermetically sealing portions of the header subassembly.
2. The optoelectronic subassembly of claim 1 , wherein the optical component is coupled to the header subassembly at the housing bottom such that the cavity hermetically seals at least one of the optoelectronic components of the header subassembly.
3. The optoelectronic subassembly of claim 1 , the optical component further comprising a window seal positioned between the housing and the window, wherein the window seal couples the window to the housing in the aperture.
4. The optical component of claim 1 , wherein the lenses are optically transmissive convex surfaces.
5. The optoelectronic subassembly of claim 1 , further comprising:
a ferrule body configured to retain optical fibers, each optical fiber conveying optical signals corresponding to one channel; and
an alignment sleeve including a sleeve cavity shaped and dimensioned to receive the ferrule body such that the ferrule body can be longitudinally positioned with respect to the alignment sleeve;
wherein the ferrule body is cylindrical, the alignment sleeve is cylindrical, and the ferrule body can be rotated with respect to the alignment sleeve when positioned at least partially within the alignment sleeve.
6. A method comprising:
providing an optical component including a housing defining a cavity and an aperture, the optical component including a lens array having a plurality of discrete lenses on an optically transmissive portion of the housing;
positioning the optical component over a header subassembly, the header subassembly including a substrate and optoelectronic components on the substrate, wherein at least one of the optoelectronic components is configured to transmit and/or receive optical signals and is optically aligned with the lens array;
hermetically sealing the optoelectronic components in the cavity of the housing;
inserting a ferrule assembly including optical fibers at least partially into the aperture; and
rotating the ferrule assembly with respect to housing when the ferrule assembly is positioned at least partially in the aperture.
7. The method of claim 6 , wherein the optical component is coupled to the header subassembly by soldering, fusing, welding, laser welding, adhering, or mechanical fastening the optical component to the header subassembly.
8. The method of claim 6 , further comprising coupling the ferrule assembly to the optical component, the ferrule assembly including a ferrule body retaining optical fibers, wherein the optical fibers are optically aligned with the lens array.
9. The method of claim 6 , further comprising integrally forming the lenses with the housing or coupling the lenses to the housing.
10. The method of claim 7 , further comprising forming the lenses by molding, machining, stamping, deposition or printing the lenses over the optically transmissive portion of the housing.
11. The method of claim 10 , wherein the lenses include a linear distribution such that the lenses are linearly aligned with respect to one another.
12. The method of claim 6 , further comprising integrally forming the optical component by molding, machining, stamping, deposition or printing.
13. The optoelectronic subassembly of claim 1 , wherein the window extends laterally of the lenses.
14. The optoelectronic subassembly of claim 1 , further comprising a housing flange positioned on the housing bottom of the housing, the housing flange positioned against the substrate.
15. The optoelectronic subassembly of claim 1 , wherein the lens array includes a linear distribution such that the lenses are linearly aligned with respect to one another.
16. The optoelectronic subassembly of claim 1 , wherein the lens array includes a non-linear distribution of lenses.