Systems And Methods For On-Chip Data Communication

• US 20110103799A1
• Filed: 12/21/2007
• Published: 05/05/2011
• Est. Priority Date: 12/22/2006
• Status: Active Grant

• Current Assignee: Trustees Of Columbia University In The City Of New York (Columbia University)
• Original Assignee: Trustees Of Columbia University In The City Of New York (Columbia University)
• Inventors: Shacham, Assaf, Carloni, Luca P., Bergman, Keren
• Granted Patent: US 8,340,517 B2
• Time in Patent Office: Days
• US Class Current: 398/115
• CPC Class Codes: H04B 10/25 Arrangements specific to fibre transmission
• CPC Class Codes: H04Q 11/0005 Switch and router aspects
• CPC Class Codes: H04Q 2011/0039 Electrical control
• CPC Class Codes: H04Q 2011/0052 Interconnection of switches

Abstract

An on-chip data communications infrastructure includes a hybrid, photonic/electronic network. The network includes a plurality of interconnected optical switches, each under the control of an electronic router. The electronic routers are connected in a fashion similar to the optical switches, forming a parallel, photonic/electronic network. Electronic path setup messages are routed through the electronic network. At each hop, a photonic switching element in a parallel, photonic network is reserved. When the electronic path setup message reaches its destination, a chain of reserved optical switches is ready to channel the optical data through the photonic network.

Claims

1. A system for on-chip data communication adapted for communicating between a source and a destination, comprising:

a network of one or more interconnected optical switches adapted for delivering data from the source to the destination, each optical switch including;

at least one photonic switching element, the at least one photonic switching element adapted to direct optical data through the optical switch when activated, and

an electronic router in connection with the at least one photonic switching element, the electronic router adapted for routing electronic path setup messages from a source to a destination and for activating the at least one photonic switching element.

2. The system of claim 1, wherein the source and destination are core processors on a multicore processor chip.

3. The system of claim 1, wherein the optical switch includes four photonic switching elements arranged in a 2×

2 structure.

4. The system of claim 3, wherein the at least one photonic switching element includes 2 input and 2 output ports.

5. The system of claim 1, wherein the photonic switching element includes at least one electrically activated ring resonator.

6. The system of claim 1, wherein the optical network is arranged in a folded torus topology.

7. A method for on-chip communication, comprising:

converting electronic data into optical data;

determining an optical data communication path by routing an electronic path setup message through one or more optical switches;

at the one or more optical switches, activating a photonic switching component, the photonic switching component directing the optical data along the optical data communication path;

sending the optical data along the optical data communication path; and

converting the optical data into electronic data.

8. The system of claim 8, wherein the on-chip communication is between core processors in a multicore processor architecture.

9. The system of claim 8, wherein the optical switch includes four photonic switching elements.

10. The system of claim 8, wherein the at least one photonic switching element includes 2 input and 2 output ports.

11. The system of claim 8, wherein the photonic switching element includes at least one electrically activated ring resonator.

12. The system of claim 8, wherein the optical network is arranged in a folded torus topology.

13. A system for on-chip data communication between a source and a destination, comprising:

a network of interconnected optical switch components adapted for delivering data from the source to the destination; and

a network of interconnected electrical routers arranged in the same topology as the network of optical switches, each of the electrical routers in connection with at least one optical switching component, adapted for routing an electronic path setup message from a source to a destination, and adapted for configuring the optical switching components to direct optical data along an optical data communications path.