QSFP-DD (quad small form factor pluggable—double density) modules and methods therefor

Patent metadata

Field	Value
Publication number	US-11036017-B2
Application number	US-201916674568-A
Country	US
Kind code	B2
Filing date	Nov 5, 2019
Priority date	Nov 9, 2018
Publication date	Jun 15, 2021
Grant date	Jun 15, 2021

Abstract

In one embodiment, a module for plugging into a QSFP-DD (Quad Small Form Factor Pluggable Double Density) cage is provided that has one or more projections for contacting a QSFP-DD optical module in an adjacent QSFP-DD recess of the QSFP-DD cage so as to evacuate heat from, and or provide power to, the QSFP-DD optical module.

First claim

What is claimed is:

1. A module plugged into an optical module recess of a Quad Small Form Factor Pluggable Double Density (QSFP-DD) cage including a plurality of optical module recesses, the module comprising one or more projections that, when a QSFP-DD optical module is plugged into an adjacent one of the plurality of optical module recesses, contact the QSFP-DD optical module.

2. The module of claim 1 , wherein the one or more projections, when the QSFP-DD optical module is plugged into the adjacent one of the plurality of optical module recesses, contact the QSFP-DD optical module on a flat portion thereof.

3. The module of claim 1 , wherein the one or more projections, when the QSFP-DD optical module is plugged into the adjacent one of the plurality of optical module recesses, obtain thermal energy from the QSFP-DD optical module.

4. The module of claim 1 , further comprising an electrical interface that, connects to an electrical supply of the QSFP-DD cage.

5. The module of claim 4 , wherein the one or more projections are in electrical communication with the electrical interface and, when the QSFP-DD optical module is plugged into the adjacent one of the plurality of optical module recesses, convey electrical energy from the module to the QSFP-DD optical module.

6. The module of claim 4 , further comprising a thermoelectric cooling element that is powered from the electrical interface and, when powered, draws heat from the one or more projections towards an electrical connection between the electrical interface and the electrical supply of the QSFP-DD cage.

7. The module of claim 1 , further comprising one or more of: fins, further projections, troughs, undulations, holes, pipes, tubes, and/or vias.

8. The module of claim 1 , further comprising an interface portion in thermal contact with an internal heat sink of the optical module recess.

9. The module of claim 1 , wherein the module includes no electro-optical data transport functionality.

10. The module of claim 1 , wherein the module is removably pluggable into one or more of the plurality of optical module recesses.

11. The module of claim 1 , further comprising a handle for inserting the module into or removing the module from one or more of the plurality of optical module recesses.

12. The module of claim 1 , wherein the QSFP-DD cage is a 2×1 QSFP-DD cage.

13. A method comprising:
inserting the module of claim 1 into the optical module recess, wherein the optical module recess is a QSFP-DD optical module recess of a network device, and wherein the QSFP-DD optical module is plugged into an adjacent QSFP-DD optical module recess of the network device.

14. A method comprising:
inserting the QSFP-DD optical module into the adjacent one of the plurality of optical module recesses, wherein the adjacent one of the plurality of optical module recesses is an adjacent QSFP-DD optical module recess of a network device, and wherein the module of claim 1 is plugged into a QSFP-DD optical module recess of the network device.

15. An apparatus arranged to plugged into an optical module recess of a Quad Small Form Factor Pluggable Double Density (QSFP-DD) cage including a plurality of optical module recesses, the apparatus comprising: one or more projections that, when a QSFP-DD optical module is plugged into an adjacent one of the plurality of optical module recesses, contact the QSFP-DD optical module.

16. The apparatus of claim 15 , wherein the one or more projections, when the QSFP-DD optical module is plugged into the adjacent one of the plurality of optical module recesses, contact the QSFP-DD optical module on a flat portion thereof.

17. The apparatus of claim 15 , wherein the one or more projections, when the QSFP-DD optical module is plugged into the adjacent one of the plurality of optical module recesses, obtain thermal energy from the QSFP-DD optical module.

18. A method comprising:
providing a module plugged into an optical module recess of a Quad Small Form Factor Pluggable Double Density (QSFP-DD) cage including a plurality of optical module recesses; and
providing one or more projections of the module so that, when a QSFP-DD optical module is plugged into an adjacent one of the plurality of optical module recesses, contact the QSFP-DD optical module.

19. The method of claim 18 , wherein providing the one or more projections includes providing one or more projections that, when the QSFP-DD optical module is plugged into the adjacent one of the plurality of optical module recesses, contact the QSFP-DD optical module on a flat portion thereof.

20. The method of claim 18 , wherein providing the one or more projections includes providing one or more projections that, when the QSFP-DD optical module is plugged into the adjacent one of the plurality of optical module recesses, obtains thermal energy from the QSFP-DD optical module.

Assignees

• Cisco Tech Inc

Inventors

• Tittenhofer Michael
• Kupfer Theodor
• Brauer Viktor

Classifications

• H05K7/20409 Primary

  Outer radiating structures on heat dissipating housings, e.g. fins integrated with the housing · CPC title

• G02B6/4278

  related to pluggable or demountable opto-electronic or electronic elements · CPC title

• G02B6/4271 Primary

  with thermo electric cooling · CPC title

• H05K7/20545

  Natural convection of gaseous coolant; Heat transfer by conduction from electronic boards · CPC title

• H01R43/26

  for engaging or disengaging the two parts of a coupling device (structural association with two-part coupling device H01R13/629) · CPC title