IP Library › Granted Patent US 12,210,964
Granted Patent B2
US 12,210,964 · App. 18/216,134 · Granted Jan 28, 2025

Optoelectronic computing systems

Inventors: Huaiyu Meng (Medford, MA); Yichen Shen (Hangzhou, CN); Yelong Xu (Allston, MA); Gilbert Hendry (Swampscott, MA); Longwu Ou (Cambridge, MA); Jingdong Deng (Acton, MA); Ronald Gagnon (North Grafton, MA); Cheng-Kuan Lu (Littleton, MA); Maurice Steinman (Marlborough, MA); Mike Evans (Arlington, MA); Jianhua Wu (Quincy, MA)
Assignee: Lightelligence PTE. Ltd.
G06N3/0675G06E1/045
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Quick Facts
Patent No.
US 12,210,964
App. No.
18/216,134
Filed
Jun 29, 2023
Granted
Jan 28, 2025
Kind
B2
Art Unit
2634
USPC
706/43
Abstract

An optoelectronic computing system includes a first semiconductor die having a photonic integrated circuit (PIC) and a second semiconductor die having an electronic integrated circuit (EIC). The PIC includes optical waveguides, in which input values are encoded on respective optical signals carried by the optical waveguides. The PIC includes an optical copying distribution network having optical splitters. The PIC includes an array of optoelectronic circuitry sections, each receiving an optical wave from one of the output ports of the optical copying distribution network, and each optoelectronic circuitry section includes: at least one photodetector detecting at least one optical wave from the optoelectronic operation. The EIC includes electrical input ports receiving respective electrical values. The first semiconductor die and the second semiconductor die are electrically coupled in a controlled collapse chip connection, with the electrical output port of the PIC connected to one of the electrical input ports of the EIC.

Claims (70)

1. A system comprising:

a photonic integrated circuit (PIC) comprising:

a first optical waveguide disposed at a first depth in the photonic integrated circuit;

a second optical waveguide disposed at a second depth in the photonic integrated circuit; and

a first set of coupling structures configured to enable transition of an optical signal from the first waveguide to the second waveguide through the first set of coupling structures, wherein the first set of coupling structures are disposed at depths between the first depth and the second depth, different coupling structures are disposed at different depths;

wherein the first set of coupling structures comprise at least a first coupling structure and a second coupling structure that have dimensions and relative positions configured such that as the optical signal transitions from the first waveguide to the second waveguide, at some point in time during the transition, at least a portion of power of the optical signal is transmitted in each of the first and second coupling structures concurrently.

2. The system of claim 1 wherein the first set of coupling structures comprise a set of staircase coupling structures.

3. The system of claim 1 wherein the first set of coupling structures comprise at least the first coupling structure, the second coupling structure, and a third coupling structure that have dimensions and relative positions configured such that as the optical signal transition from the first waveguide to the second waveguide, at some point in time during the transition, at least a portion of power of the optical signal is transmitted in each of the first, second, and third coupling structures concurrently.

4. The system of claim 1 wherein the first set of coupling structures comprise at least n coupling structures, n is an integer, 3≤n<100,

the n coupling structures have dimensions and relative positions that are configured such that as the optical signal transitions from the first waveguide to the second waveguide, at some point in time during the transition, each of the n coupling structures transmits at least a portion of power of the optical signal concurrently.

5. The system of claim 1 wherein the photonic integrated circuit comprises a third optical waveguide disposed at a third depth in the photonic integrated circuit, in which the third depth is different from the first and second depths; and

a second set of coupling structures configured to enable transition of the optical signal from the second waveguide to the third waveguide through the second set of coupling structures, in which the second set of coupling structures are disposed at depths between the second depth and the third depth, different coupling structures are disposed at different depths.

6. The system of claim 5 wherein the second set of coupling structures comprise at least a third coupling structure and a fourth coupling structure that have dimensions and relative positions configured such that as the optical signal transition from the first waveguide to the second waveguide, at some point in time during the transition, at least a portion of power of the optical signal is transmitted in each of the third and fourth coupling structures concurrently.

7. The system of claim 1 wherein the photonic integrated circuit comprises:

an optical network comprising a plurality of optical splitters or directional couplers, and

an array of optoelectronic circuitry sections, in which each optoelectronic circuitry section is configured to receive an optical wave from one of the output ports of the optical network, and each optoelectronic circuitry section includes:

at least one photodetector configured to detect at least one optical wave from an operation; and

at least one conductive line integrated in the photonic integrated circuit electrically coupled to the photodetector and electrically coupled to an electrical output port.

8. The system of claim 7 in which the photonic integrated circuit is disposed on a first semiconductor die, the system comprises a second semiconductor die comprising an electronic integrated circuit (EIC), the electronic integrated circuit comprising:

a plurality of electrical input ports receiving respective electrical values;

wherein the first semiconductor die and the second semiconductor die are electrically coupled in a controlled collapse chip connection, with the electrical output port of the photonic integrated circuit connected to one of the electrical input ports of the electronic integrated circuit.

9. A system comprising:

a photonic integrated circuit (PIC) comprising:

a first optical waveguide disposed at a first depth in the photonic integrated circuit;

a second optical waveguide disposed at a second depth in the photonic integrated circuit; and

a first set of coupling structures configured to enable transition of an optical signal from the first waveguide to the second waveguide through the first set of coupling structures, wherein the first set of coupling structures are disposed at depths between the first depth and the second depth, different coupling structures are disposed at different depths;

wherein the first set of coupling structures comprise at least a first coupling structure and a second coupling structure that have dimensions and relative positions configured such that a portion of the second coupling structure overlaps both a portion of the first coupling structure and a portion of the first optical waveguide.

10. The system of claim 9 wherein the first set of coupling structures comprise the first coupling structure, the second coupling structure, and a third coupling structure that have dimensions and relative positions configured such that a portion of the third coupling structure overlaps a portion of the first coupling structure, and a portion of the second coupling structure.

11. The system of claim 9 wherein the first set of coupling structures comprise the first coupling structure, the second coupling structure, and a third coupling structure that have dimensions and relative positions configured such that a portion of the third coupling structure overlaps a portion of the first coupling structure, a portion of the second coupling structure, and a portion of the first optical waveguide.

12. The system of claim 9 wherein the first set of coupling structures comprise the first coupling structure, the second coupling structure, and a third coupling structure that have dimensions and relative positions configured such that a portion of the third coupling structure overlaps a portion of the first coupling structure, and a portion of the second coupling structure.

13. The system of claim 9 wherein the first set of coupling structures comprise the first coupling structure, the second coupling structure, a third coupling structure, and a fourth coupling structure that have dimensions and relative positions configured such that a portion of the fourth coupling structure overlaps a portion of the first coupling structure, a portion of the second coupling structure, and a portion of the third coupling structure.

14. The system of claim 9 wherein the first set of coupling structures comprise a set of staircase coupling structures.

15. The system of claim 9 wherein the first set of coupling structures comprise at least the first coupling structure, the second coupling structure, and a third coupling structure that have dimensions and relative positions configured such that as the optical signal transition from the first waveguide to the second waveguide, at some point in time during the transition, at least a portion of power of the optical signal is transmitted in each of the first, second, and third coupling structures concurrently.

16. The system of claim 9 wherein the first set of coupling structures comprise at least n coupling structures, n is an integer, 3≤n<100,

the n coupling structures have dimensions and relative positions that are configured such that as the optical signal transition from the first waveguide to the second waveguide, at some point in time during the transition, each of the n coupling structures transmits at least a portion of power of the optical signal concurrently.

17. The system of claim 9 , comprising a third optical waveguide disposed at the third depth in the photonic integrated circuit, in which the third depth is different from the first and second depths; and

a second set of coupling structures configured to enable transition of the optical signal from the second waveguide to the third waveguide through the second set of coupling structures, in which the second set of coupling structures are disposed at depths between the second depth and the third depth, different coupling structures are disposed at different depths.

18. The system of claim 9 wherein the photonic integrated circuit comprises:

an optical network comprising a plurality of optical splitters or directional couplers, and

an array of optoelectronic circuitry sections, in which each optoelectronic circuitry section is configured to receive an optical wave from one of the output ports of the optical network, and each optoelectronic circuitry section includes:

at least one photodetector configured to detect at least one optical wave from an operation; and

at least one conductive line integrated in the photonic integrated circuit electrically coupled to the photodetector and electrically coupled to an electrical output port.

19. The system of claim 18 in which the photonic integrated circuit is disposed on a first semiconductor die, the system comprises a second semiconductor die comprising an electronic integrated circuit (EIC), the electronic integrated circuit comprising:

a plurality of electrical input ports receiving respective electrical values;

wherein the first semiconductor die and the second semiconductor die are electrically coupled in a controlled collapse chip connection, with the electrical output port of the photonic integrated circuit connected to one of the electrical input ports of the electronic integrated circuit.

20. A method comprising:

providing a photonic integrated circuit (PIC) comprising:

a first optical waveguide disposed at a first depth in the photonic integrated circuit;

a second optical waveguide disposed at a second depth in the photonic integrated circuit;

a first set of coupling structures disposed at depths between the first depth and the second depth, different coupling structures are disposed at different depths, the first set of coupling structures comprising at least a first coupling structure and a second coupling structure;

transitioning an optical signal from the first waveguide to the second waveguide through the first set of coupling structures, and as the optical signal transitions from the first waveguide to the second waveguide, at some point in time during the transition, transmitting at least a portion of power of the optical signal in each of the first and second coupling structures concurrently.

21. The method of claim 20 wherein the first set of coupling structures comprise a set of staircase coupling structures.

22. The method of claim 20 wherein the first set of coupling structures comprise at least the first coupling structure, the second coupling structure, and a third coupling structure;

wherein the method comprises transitioning the optical signal from the first waveguide to the second waveguide, and at some point in time during the transition, transmitting at least a portion of power of the optical signal in each of the first, second, and third coupling structures concurrently.

23. The method of claim 20 wherein the first set of coupling structures comprise at least n coupling structures, n is an integer, 3≤n<100,

wherein the method comprises transitioning the optical signal from the first waveguide to the second waveguide, and at some point in time during the transition, transmitting at least a portion of power of the optical signal in each of the n coupling structures concurrently.

24. The method of claim 20 wherein the photonic integrated circuit comprises:

a third optical waveguide disposed at a third depth in the photonic integrated circuit, in which the third depth is different from the first and second depths, and

a second set of coupling structures disposed at depths between the second depth and the third depth, different coupling structures are disposed at different depths; and

wherein the method comprises transitioning the optical signal from the second waveguide to the third waveguide through the second set of coupling structures.

25. The method of claim 24 wherein the second set of coupling structures comprise at least a third coupling structure and a fourth coupling structure;

wherein the method comprises transitioning the optical signal from the first waveguide to the second waveguide, and at some point in time during the transition, transmitting at least a portion of power of the optical signal in each of the third and fourth coupling structures concurrently.

26. The method of claim 20 wherein the photonic integrated circuit comprises:

an optical network comprising a plurality of optical splitters or directional couplers, and

an array of optoelectronic circuitry sections, in which each optoelectronic circuitry section is configured to receive an optical wave from one of the output ports of the optical network, and each optoelectronic circuitry section includes:

at least one photodetector configured to detect at least one optical wave from an operation; and

at least one conductive line integrated in the photonic integrated circuit electrically coupled to the photodetector and electrically coupled to an electrical output port.

27. The method of claim 26 wherein the photonic integrated circuit is disposed on a first semiconductor die;

wherein the method comprises providing a second semiconductor die comprising an electronic integrated circuit (EIC), the electronic integrated circuit comprising a plurality of electrical input ports receiving respective electrical values;

wherein the first semiconductor die and the second semiconductor die are electrically coupled in a controlled collapse chip connection, with the electrical output port of the photonic integrated circuit connected to one of the electrical input ports of the electronic integrated circuit.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 30, 2023
From: MENG, HUAIYU; SHEN, YICHEN; XU, YELONG; HENDRY, GILBERT; OU, LONGWU; DENG, JINGDONG; GAGNON, RONALD; LU, CHENG-KUAN; STEINMAN, MAURICE; EVANS, MIKE; WU, JIANHUA
To: LIGHTELLIGENCE, INC.
Reel/Frame 064122/0223 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 30, 2023
From: LIGHTELLIGENCE, INC.
To: LIGHTELLIGENCE PTE. LTD.
Reel/Frame 064122/0256 →
Continuity (8)
Continuation 17204320 · Mar 17, 2021
Continuation In Part PCTUS2020023674 · Mar 19, 2020
Continuation In Part PCTUS2019064554 · Dec 4, 2019
Continuation In Part 16703278 · Dec 4, 2019
Provisional Application 63061995 · Aug 6, 2020
Provisional Application 62820562 · Mar 19, 2019
Provisional Application 62792144 · Jan 14, 2019
Related Publication 20240078422A1 · Mar 7, 2024
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