Data center with free-space optical communications

• US 8,452,182 B2
• Filed: 03/31/2010
• Issued: 05/28/2013
• Est. Priority Date: 12/21/2009
• Status: Active Grant

• Current Assignee: The Invention Science Fund I, L.L.C. (Intellectual Ventures LLC)
• Original Assignee: The Invention Science Fund I, L.L.C. (Intellectual Ventures LLC)
• Inventors: Davidson, Howard Lee, Hamilton, James R., Hyde, Roderick A., Josefsberg, Arne, Jung, Edward K. Y., Kare, Jordin T., Lord, Robert W., Lustig, Kenneth, Mangione-Smith, William Henry, Manos, Michael, Mundie, Craig J., Myhrvold, Nathan P., Rashid, Richard F., Smith, Burton, Tegreene, Clarence T., Welland, Robert V., Whitmer, Charles, Wood, Lowell L. Jr.
• Primary Examiner(s): TRAN, DZUNG D
• Application Number:
  US12/798,314
• Publication Number:
  US 20110150472A1
• Time in Patent Office: 1,154 Days
• Field of Search: 398115-130
• US Class Current: 398/124
• CPC Class Codes: H04B 10/1149 Arrangements for indoor wireless networking of information

Abstract

A data center for executing a data processing application includes processing units, sub-units or servers. Each of the processing units, sub-units or servers can execute a part or all of the data processing application. The processing units, sub-units or servers are electrical disjoint with respect to data communications, but can communicate with each other over free space optical links.

Claims

1. A method comprising:

providing a plurality of data center units (DCUs) disposed in a region, wherein each DCU is configured to run a part or all of a data processing application;

dynamically predicting a future communication need between a first DCU and a second DCU, based on the data processing application running on the first DCU and the second DCU; and

establishing one or more free space optical communication links to meet the predicted future communication need between the first DCU and the second DCU in response to the dynamic prediction.

2. The method of claim 1, wherein predicting the communication need between the first DCU and the second DCU comprises predicting a start time (ts) and/or an end time (te) of the communication need, and wherein establishing one or more free space optical communication links comprises preparing the one or more free space optical communication links at times t1<

ts in anticipation of the communication need.

3. The method of claim 2, further comprising, disconnecting and/or discontinuing the one or more free space optical communication links at times t2 after the end time (te) of the communication need.

4. The method of claim 3, wherein the OIUs comprise one or more physically, acousto-optically and/or electro-optically steerable elements for transmitting, redirecting, and/or receiving communications over the free space optical communication links.

5. The method of claim 1, wherein predicting the future communication need between the first DCU and the second DCU comprises providing circuitry to monitor running of the data processing application.

6. The method of claim 1, wherein providing a plurality of data center units (DCUs), comprises providing at least the first and the second of the plurality of data center units with optical interface units (OIU).

7. The method of claim 6, wherein establishing one or more free space optical communication links to meet the predicted future communication need between the first DCU and the second DCU comprises activating the respective OIUs for mutual transmission and/or reception of free space optical communication signals.

8. The method of claim 6, wherein the OIUs comprise at least one of an optical signal pass-through device, an optical beam generator, an optical beam modulator, an optical beam director, a steerable optical element, a beam-forming circuitry, an optical signal receiver/detector, an electrical-to-optical signal convertor, an optical-to-electrical signal converter, electrical and/or optical switchgear.

9. The method of claim 6, wherein the OIUs comprise one or more independently steerable light transmitting elements, independently steerable light redirecting elements, and/or independently steerable light receiving elements for communications over the free space optical communication links.

10. The method of claim 6, wherein the OIU comprise at least one of a reflecting mirror, a diffractive beam director, and/or a hemispherical lens.

11. The method of claim 6, wherein establishing one or more free space optical communication links comprises providing an internal network controller configured to control inter-linking of one or more of the plurality of DCUs.

12. The method of claim 11, wherein the network controller is configured to control the OIUs using optical, electrical, and/or electromagnetic control signals.

13. The method of claim 11, wherein the network controller is configured to control the OIUs with free space optical control signals.

14. The method of claim 13, wherein at least one of the first and the second DCUs is a mobile DCU configured to move from a first position to a second position.

15. The method of claim 14, wherein the network controller is configured to reposition the mobile DCU to establish the one or more free space optical communication links.

16. The method of claim 11, wherein the internal network controller comprises one or more optical elements.

17. The method of claim 16, wherein the one or more optical elements comprise at least one of an optical signal receiver/detector, an optical signal pass-through device, a reflecting mirror, a steerable telescope, a hemispherical lens, electrical and/or optical switchgear, an optical-optical switch, an opto-electronic switch, an electronic switch, an optical beam generator, an optical beam director, an optical signal modulator, an optical router, an optical frequency convertor, an electric-to-optical convertor, an optical-to-electric convertor, an electro-optical beam steering element, an acoustic-optical beam steering element, a diffractive beam steering element, and/or a mechanically steerable optical element.

18. The method of claim 1, wherein the plurality of DCUs comprise one or more of data center bottles and/or data processing units, wherein the data center bottles include a plurality of data processing units, wherein the data processing units include one or more data processing circuits, and wherein the data processing circuits include one or more electronic modules, boxes, servers, cards, boards, and/or racks or free standing assemblies thereof.

19. The method of claim 1, wherein establishing one or more free space optical communication links to meet the predicted future communication need between the first DCU and the second DCU running part or all of the data processing application further comprises:

providing a modulator configured to modulate a raw light beam and transmit a modulated light beam over the one or more free space optical communication links; and

providing at least one light beam source configured to provide the raw light beam to the modulator.

20. The method of claim 19, further comprising, providing a demodulator configured to remove modulation from a modulated light beam.

21. The method of claim 1, wherein providing a plurality of data center units (DCUs) comprises configuring at least one of the first and second DCUs to broadcast optical control and/or data signals over the one or more free space optical communication links.

22. The method of claim 1, wherein a broadcasting transmitter is configured to broadcast a free space optical control/and or data signals at different wavelengths, different polarizations, different transmit time slots, different headers, and/or different combinations thereof, and wherein an intended recipient is designated by a respective identifying-wavelength, a respective identifying-polarization, a respective identifying-transmit time slot, a respective identifying-header and/or a respective identifying-combination thereof.

23. The method of claim 1, wherein the one or more free space optical communication links are configured to support multi-wavelength and/or multi-polarization optical communications.

24. The method of claim 23, wherein a communication channel between the first and the second DCUs is assigned a discrete set of one or more wavelengths for transmitting and/or receiving control and/or data signals over the one or more free space optical communication links.

25. The method of claim 1, wherein the one or more free space optical communication links are configured to pass through a hub of an internal network of free space optical communication links in the region.

26. The method of claim 1, wherein establishing one or more free space optical communication links comprises digitally writing the routing in the hologram to redirect one or more incident light beams from the first DCU to the second DCU and/or vice versa in response to the predicted future communication need.

27. A data center, comprising:

a plurality of data center units (DCUs) disposed in a region, including a first DCU and a second DCU, wherein each DCU is configured to run a part or all of a data processing application;

circuitry configured to dynamically predict a future communication need between the first DCU and the second DCU while running part or all of the data processing application; and

a network controller configured to establish one or more free space optical communication links to meet the predicted future communication need between the first DCU and the second DCU running part or all of the data processing application in response to the prediction.

28. The data center of claim 27, wherein the circuitry configured to predict the future communication need between the first DCU and the second DCU is further configured to predict a start time (ts) and/or an end time (te) of the communication need, and wherein the network controller is further configured to prepare the one or more free space optical communication links at times t1<

ts in anticipation of the communication need.

29. The data center of claim 28, wherein the network controller is further configured to disconnect and/or discontinue the one or more free space optical communication links at times t2 after the end time (te) of the communication need.

30. The data center of claim 27, wherein circuitry configured to predict the future communication need between the first DCU and the second DCU comprises circuitry to monitor running of the data processing application.

31. The data center of claim 27, wherein at least the first and the second of the plurality of data center units comprise optical interface units (01U).

32. The data center of claim 31, wherein network controller is configured to activate the respective OIUs of the first DCU and the second for mutual transmission and/or reception of free space optical communication signals.

33. The data center of claim 32, wherein the OIUs comprise at least one of an optical signal pass-through device, an optical beam generator, an optical beam modulator, an optical beam director, a steerable optical element, a beam-forming circuitry, an optical signal receiver/detector, an electrical-to-optical signal convertor, an optical-to-electrical signal converter, electrical and/or optical switchgear.

34. The data center of claim 32, wherein the OIUs comprise one or more acousto-optically and/or electro-optically steerable elements for transmitting, redirecting, and/or receiving communications over the free space optical communication links.

35. The data center of claim 32, wherein the OIUs comprise one or more independently steerable light transmitting elements, independently steerable light redirecting elements, and/or independently steerable light receiving elements for communications over the free space optical communication links.

36. The data center of claim 32, wherein the OIUs comprise at least one of a reflecting mirror, a diffractive beam director, and/or a hemispherical lens.

37. The data center of claim 32, wherein the internal network controller is configured to control inter-linking of one or more of the plurality of DCUs.

38. The data center of claim 37, wherein the network controller is configured to control the OIUs using optical, electrical, and/or electromagnetic control signals.

39. The data center of claim 37, wherein the network controller is configured to control the OIUs with free space optical control signals.

40. The data center of claim 37, wherein at least one of the first and the second DCUs is a mobile DCU configured to move from a first position to a second position.

41. The data center of claim 40, wherein the network controller is configured to reposition the mobile DCU to establish the one or more free space optical communication links.

42. The data center of claim 27, wherein the internal network controller comprises one or more optical elements.

43. The data center of claim 42, wherein the one or more optical elements comprise at least one of an optical signal receiver/detector, an optical signal pass-through device, a reflecting mirror, a steerable telescope, a hemispherical lens, electrical and/or optical switchgear, an optical-optical switch, an opto-electronic switch, an electronic switch, an optical beam generator, an optical beam director, an optical signal modulator, an optical router, an optical frequency convertor, an electric-to-optical convertor, an optical-to-electric convertor, an electro-optical beam steering element, an acoustic-optical beam steering element, a diffractive beam steering element, and/or a mechanically steerable optical element.

44. The data center of claim 27, wherein the plurality of DCUs comprise one or more of data center bottles and/or data processing units, wherein the data center bottles include a plurality of data processing units, wherein the data processing units include one or more data processing circuits, and wherein the data processing circuits include one or more electronic modules, boxes, servers, cards, boards, and/or racks or free standing assemblies thereof.

45. The data center of claim 27, further comprising:

a modulator configured to modulate a raw light beam and transmit a modulated light beam over the one or more free space optical communication links; and

at least one light beam source configured to provide the raw light beam to the modulator.

46. The data center of claim 45, wherein the modulator is configured to modulate one or more of an amplitude, a pulse format, a phase, a frequency and/or polarization of the raw light beam.

47. The data center of claim 46, further comprising, a demodulator configured to remove modulation from a modulated light beam.

48. The data center of claim 27, wherein at least one of the first and second DCUs is configured to broadcast optical control and/or data signals over the one or more free space optical communication links.

49. The data center of claim 48, wherein at least one of the first and second DCUs comprises a broadcasting transmitter.

50. The data center of claim 49, wherein the broadcasting transmitter is configured to broadcast a free space optical control/and or data signals at different wavelengths, different polarizations, different transmit time slots, different headers, and/or different combinations thereof, and wherein an intended recipient is designated by a respective identifying-wavelength, a respective identifying-polarization, a respective identifying-transmit time slot, a respective identifying-header and/or a respective identifying-combination thereof.

51. The data center of claim 50, wherein a receiving DCU is configured to recognize that it is the intended recipient of a broadcasted free space optical control/and or data signal by recognizing its respective identifying-wavelength signal, respective identifying-polarization, respective identifying-transmit time slot, respective identifying-header, and/or respective identifying-combination thereof.

52. The data center of claim 27, further comprising, an optical receiver associated with at least one of the first and second DCUs, wherein the optical receiver is configured to receive optical control and/or data signals over the one or more free space optical communication links.

53. The data center of claim 27, wherein the one or more free space optical communication links are configured to support multi-wavelength and/or multi-polarization optical communications.

54. The data center of claim 53, wherein a communication channel between the first and the second DCUs is assigned a discrete set of one or more wavelengths for transmitting and/or receiving control and/or data signals over the one or more free space optical communication links.

55. The data center of claim 27, wherein the one or more free space optical communication links are configured to pass through a hub of an internal network of free space optical communication links in the region.

56. The data center of claim 55, wherein the hub comprises a hologram configured to redirect one or more incident light beams according to a digitally written routing.

57. The data center of claim 56, wherein the digitally written routing in the hologram is prepared to redirect one or more incident light beams from the first DCU to the second DCU and/or vice versa in response to the circuitry configured to predict the future communication need.