Crosspoint switch with μLED IO ports and imaging fiber cables

Patent metadata

Field	Value
Publication number	US-12348913-B2
Application number	US-202318099473-A
Country	US
Kind code	B2
Filing date	Jan 20, 2023
Priority date	Aug 30, 2021
Publication date	Jul 1, 2025
Grant date	Jul 1, 2025

Abstract

Systems and methods include an optical switch system which provides a combination of μLED arrays, PDs, imaging fiber cables, and crosspoint switch on a single chip. The system includes one or more input ports with each input port configured to connect to an input fiber bundle. The system additionally includes one or more output ports with each output port configured to connect to an output fiber cable, wherein each of the input fiber bundle and the output fiber cable include a plurality of fiber cores. An electrical crosspoint switch is connected to the one or more input ports and the one or more output ports, wherein the electrical crosspoint switch is configured to connect a given input port to a corresponding output port, including all signals in the input fiber cable to the corresponding output fiber cable.

First claim

What is claimed is:

1. An optical switch system comprising: one or more input ports with each input port configured to connect to an input fiber cable; one or more output ports with each output port configured to connect to an output fiber cable, wherein each of the input fiber cable and the output fiber cable include K fiber cores, K>>1K>>1; and an electrical crosspoint switch connected to the one or more input ports and the one or more output ports, wherein the electrical crosspoint switch is configured to connect a given input port to a corresponding output port, including signals in the input fiber cable to the corresponding output fiber cable, wherein each input port and each output port include several data channels grouped together forming a higher data rate signal with the electrical crosspoint switch configured to switch the several data channels together between corresponding ports.

2. The optical switch system of claim 1 , wherein each input port is a photodiode array and each output port is a micro light emitting diode array.

3. The optical switch system of claim 1 , wherein each input port is a photodiode array and each output port is a micro light emitting diode array, and wherein the one or more input ports, the one or more output ports, and the electrical crosspoint switch are copackaged together.

4. The optical switch system of claim 1 , wherein the one or more input ports are in a photodiode array circuit, the one or more output ports are in a micro light emitting diode array circuit, and the electrical crosspoint switch is in a switch circuit, and wherein the micro light emitting diode array circuit and the photodiode array circuit are stacked on the switch circuit.

5. The optical switch system of claim 1 , wherein the input fiber cable and the output fiber cable imaging fibers.

6. The optical switch system of claim 1 , wherein each output port includes M transmitters, M and K are integers, M<K, and each input port includes P receivers, P is an integer, P<K.

7. The optical switch system of claim 6 , wherein in each input port, one of the P receivers is adapted for selecting a destination address in the electrical crosspoint switch.

8. The optical switch system of claim 6 , wherein in each input port, one of the P receivers is adapted for clock phase.

9. The optical switch system of claim 1 , wherein the electrical crosspoint switch includes a plurality of input traces connected to each input port of the one or more input ports and a plurality of output traces connected to each output port of the one or more output ports.

10. The optical switch system of claim 9 , wherein the plurality of input traces are logically positioned horizontally and the plurality of output traces are logically positioned vertically relative to the plurality of input traces, and wherein the electrical crosspoint switch further includes
a plurality of switches at corresponding crossings of the plurality of input traces and the plurality of output traces.

11. The optical switch system of claim 1 , wherein the one or more input ports and the one or more output ports are short reach devices, and further comprising one or more long reach optical modems connected to one or more of the one or more output ports and the one or more input ports.

12. The optical switch system of claim 11 , wherein the short reach devices are ten meter modems, and the one or more long reach optical modems are coherent modems.

13. The optical switch system of claim 1 , wherein the one or more input ports and the one or more output ports each include a plurality of data channels, and wherein the plurality of data channels form an aggregate signal for switching via the electrical crosspoint switch.

14. The optical switch system of claim 1 , wherein each input port of the one or more input ports is a photodiode array and each output port of the one or more output ports is a laser array.

15. A layered electronic crosspoint switch adapted to selectively couple a one or more input ports and a one or more output ports, the electronic crosspoint switch comprising:
a plurality of layered electronic crosspoint switches;
one or more input ports with each input port configured to connect to an input fiber cable; and
one or more output ports with each output port configured to connect to an output fiber cable,
wherein each of the one or more input ports and the one or more output ports include several data channels grouped together forming a higher data rate signal with the plurality of layered electronic crosspoint switches configured to switch the several data channels together between corresponding ports.

16. The layered electronic crosspoint switch of claim 15 , wherein each input port of the one or more input ports is a photodiode array and each output port of the one or more output ports is a micro light emitting diode array.

17. The layered electronic crosspoint switch of claim 15 , wherein each of the input fiber bundle and the output fiber bundle include a cable having fiber cores, wherein the fiber cores are plastic imaging fibers.

18. The layered electronic crosspoint switch of claim 15 , wherein the one or more input ports and the one or more output ports each include a plurality of data channels, and wherein the plurality of data channels form an aggregate signal for switching via the electrical crosspoint switch.

19. The layered electronic crosspoint switch of claim 15 , wherein at least one of the layered crosspoint switches is configured as a clock channel.

Assignees

• Ciena Corp

Inventors

• Rivaud Daniel
• Frankel Michael Y
• Pelekhaty Vladimir
• Wingrove Michael

Classifications

• H04J14/052

  using multicore fibre (mode multiplex systems H04J14/04) · CPC title

• H04Q2011/0007

  Construction · CPC title

• G02B6/43

  Arrangements comprising a plurality of opto-electronic elements and associated optical interconnections · CPC title

• G02B6/4249

  comprising arrays of active devices and fibres · CPC title

• H04B10/2581

  Multimode transmission · CPC title