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US 10,382,137 B2Granted
Optoelectronic device having improved optical coupling
AssigneeSTMicroelectronics S.r.l.
InventorsLuca Maggi, Antonio Fincato, Salvatore Mario Rotolo, Matteo Alessio Traldi, Luigi Verga, Mark Andrew Shaw
Life of this patent
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Abstract
An optoelectronic device may include a package having a component for sending/receiving optical signals along a first direction, and a chip of semiconductor material housed within the package. The chip may have a main surface and a portion exposed on the main surface for sending/receiving the optical signals along a second direction different from the first direction. The optoelectronic device may further include a component for deflecting the optical signals between the first direction and the second direction, the component being mounted on the main surface.
Claims21
A method for making an optoelectronic device comprising:
- mounting an electronic integrated chip onto an optical integrated circuit that is supported by a bottom wall of a housing, the optical integrated circuit comprising a main surface;
- mounting an optical deflector on the main surface of the optical integrated circuit;
- attaching sidewalls on opposite edge regions of the bottom wall of the housing, wherein a first sidewall of the sidewalls comprises an optical window to send/receive optical signals along a first direction, and wherein the main surface of the optical integrated circuit includes an optical grating to send/receive optical signals along a second direction different from the first direction;
- positioning a focusing lens to focus the optical signals to/from the optical window;
- enclosing the focusing lens with an enclosure to include an air gap between the enclosure and the focusing lens;
- and
- attaching a top wall to the sidewalls so as to form the housing that encloses the electronic integrated chip and the optical integrated circuit, wherein, after the attaching, along the second direction, an outer surface of the enclosure is spaced from an internal surface of the top wall facing the main surface of the optical integrated circuit by a first fixed distance.
4 more elements
A method for making an optoelectronic device comprising:
- mounting an electronic integrated chip onto an optical integrated circuit that is supported by a bottom wall of a housing, the optical integrated circuit comprising a main surface;
- attaching sidewalls on opposite edge regions of the bottom wall of the housing, wherein a first sidewall of the sidewalls comprises an optical window to send/receive optical signals along a first direction, and wherein the main surface of the optical integrated circuit includes an optical grating to send/receive optical signals along a second direction different from the first direction;
- mounting an optical deflector on the main surface of the optical integrated circuit;
- positioning a focusing lens to focus the optical signals to/from the optical window;
- providing a propagation portion configured to propagate the optical signals from the optical deflector and the focusing lens, wherein the optical deflector, the focusing lens, and the propagation portion are integrated in a single monolithic piece, wherein the single monolithic piece comprises a curved outer surface facing the optical window;
- and
- attaching a top wall to the sidewalls so as to form the housing that encloses the electronic integrated chip and the optical integrated circuit.
4 more elements
A method for making an optoelectronic device comprising:
- mounting an electronic integrated chip onto an optical integrated circuit that is supported by a bottom wall of a housing, the optical integrated circuit comprising a main surface;
- attaching sidewalls on opposite edge regions of the bottom wall of the housing, wherein a first sidewall of the sidewalls comprises an optical window to send/receive optical signals along a first direction, and wherein the main surface of the optical integrated circuit includes an optical grating to send/receive optical signals along a second direction different from the first direction;
- mounting an optical deflector on the main surface of the optical integrated circuit;
- positioning a focusing lens to focus the optical signals to/from the optical window;
- providing a propagation portion configured to propagate the optical signals from the optical deflector and the focusing lens, wherein the optical deflector, the focusing lens, and the propagation portion are integrated in a single monolithic piece;
- attaching a top wall to the sidewalls so as to form the housing that encloses the electronic integrated chip and the optical integrated circuit;
- and
- attaching an additional lens aligned to the optical window outside the housing.
5 more elements
Dependencies are inferred from the claim text.