Apparatus and method for management of calibration data

• US 7,108,185 B2
• Filed: 03/28/2003
• Issued: 09/19/2006
• Est. Priority Date: 03/28/2003
• Status: Expired due to Fees

• Current Assignee: Intel Corporation
• Original Assignee: Intel Corporation
• Inventors: McDonald, Mark E.
• Primary Examiner(s): LE, THIEN MINH
• Application Number:
  US10/402,606
• Publication Number:
  US 20040188518A1
• Time in Patent Office: 1,271 Days
• Field of Search: 23546201-46247, 235/380, 235/382, 235/454, 235/375, 235/383, 235/38, 235/492, 372/38.02, 372/29.02, 372/38.2, 398/201, 398/183, 398/197
• US Class Current: 235/462.01
• CPC Class Codes: H01S 5/0014 Measuring characteristics or properties thereof measuring techniques per se G01J, G01K, G01N, G01R
• CPC Class Codes: H01S 5/0617 using memorised or pre-programmed laser characteristics
• CPC Class Codes: H01S 5/06808 by monitoring the electrical laser parameters, e.g. voltage or current

Abstract

An apparatus comprising a device having calibration data associated therewith, and a calibration tag placed on the device, the calibration tag having encoded thereon the calibration data or a locator identifying where the calibration data can be found. A process comprising calibrating a device to obtain a set of calibration data, generating a calibration tag, the calibration tag having encoded thereon the calibration data or a locator identifying where the calibration data can be found, and placing the calibration tag on the device. Other embodiments are also described and claimed.

Claims

1. An apparatus comprising:

a tunable laser having calibration data associated therewith, the calibration data comprising a calibration table that associates an output wavelength with one or more inputs; and

a calibration tag placed on the tunable laser, the calibration tag having encoded thereon the calibration data or a locator identifying where the calibration data can be found.

2. The apparatus of claim 1 wherein the calibration tag comprises an optically readable symbol.

3. The apparatus of claim 2 wherein the optically readable symbol is a linear bar code or a matrix code.

4. The apparatus of claim 2 wherein the optically readable symbol is printed on a label.

5. The apparatus of claim 2 wherein the optically readable symbol is etched on the tunable laser.

6. The apparatus of claim 1 wherein the calibration tag comprises a radio frequency (RF) tag.

7. The apparatus of claim 1 wherein the locator is a network address identifying a network-accessible database where the calibration data is stored and can be retrieved.

8. The apparatus of claim 7 wherein the network address is an internet protocol (IP) address.

9. The apparatus of claim 1, further comprising a device controller including a memory, wherein the calibration data is retrieved via the calibration tag and stored in the memory.

10. The apparatus of claim 9 wherein the memory is integral in the device controller.

11. An article of manufacture comprising:

a calibration tag having encoded thereon calibration data or a locator identifying where the calibration data can be found, the calibration data comprising a calibration table that associates an output wavelength with one or more inputs; and

means for placing the calibration tag on a tunable laser with which the calibration data is associated.

12. The article of manufacture of claim 11 wherein the calibration tag comprises an optically readable symbol.

13. The article of manufacture of claim 12 wherein the optically readable symbol is a linear bar code or a matrix code.

14. The article of manufacture of claim 12 wherein the optically readable symbol is printed on a label.

15. The article of manufacture of claim 11 wherein the means for placing the calibration tag on the tunable laser comprises a label on which the calibration tag is printed.

16. The article of manufacture of claim 11 wherein the means for placing the calibration tag on the tunable laser comprises etching the calibration tag on the tunable laser.

17. The article of manufacture of claim 11 wherein the calibration tag is a radio frequency (RF) tag.

18. A system comprising:

a tunable laser having calibration data associated therewith, the calibration data comprising a calibration table that associates an output wavelength with one or more inputs;

a calibration tag placed on the tunable laser, the calibration tag having encoded thereon the calibration data or a locator identifying where the calibration data can be found;

a reader to retrieve the information from the calibration tag;

a processor coupled to the reader to process the information retrieved from the calibration tag; and

a device controller coupled to the tunable laser and including a memory, wherein the calibration data is downloaded to the memory by the processor.

19. The system of claim 18 wherein the calibration tag comprises an optically readable symbol.

20. The system of claim 19 wherein the optically readable symbol is a linear bar code or a matrix code.

21. The system of claim 19 wherein the optically readable symbol is printed on a label.

22. The system of claim 19 wherein the calibration tag is etched on the tunable laser.

23. The system of claim 18 wherein the calibration tag comprises a radio frequency (RF) tag.

24. The system of claim 18 wherein the processor decodes the calibration data encoded in the calibration tag.

25. The system of claim 18 wherein the processor decodes the locator encoded in the calibration tag to identify where the calibration data can be found.

26. The system of claim 18 wherein the locator is a network address identifying a network-accessible database where the calibration data is stored.

27. The system of claim 26 wherein the network address is an Internet Protocol (IP) address or a Media Access Control (MAC) address.

28. The system of claim 26 wherein the processor is coupled to the network and retrieves the calibration data stored in the network-accessible database.

29. A process comprising:

calibrating a tunable laser to obtain a set of calibration data comprising a calibration table that associates an output wavelength with one or more inputs;

generating a calibration tag, the calibration tag having encoded thereon the calibration data or a locator identifying where the calibration data can be found;

placing the calibration tag on the tunable laser.

30. The process of claim 29 wherein the calibration tag comprises an optically readable symbol.

31. The process of claim 30 wherein the optically readable symbol is a linear bar code or a matrix code.

32. The process of claim 29 wherein placing the calibration tag on the tunable laser comprises printing the calibration tag on a label and placing the label on the tunable laser.

33. The process of claim 29 wherein placing the calibration tag on the tunable laser comprises etching the calibration tag on the tunable laser.

34. The process of claim 29 wherein the calibration tag comprises a radio frequency (RF) tag.

35. The process of claim 29, further comprising storing the calibration data in a database.

36. The process of claim 35 wherein the database is accessible via a network.

37. The process of claim 29 wherein the locator is a network address identifying a network-accessible database where the calibration data is stored.

38. The process of claim 37 wherein the network address is an internet protocol (IP) address.

39. A process comprising:

reading information from a calibration tag attached to a tunable laser, the tunable laser having calibration data associated therewith and a controller with a memory coupled thereto, and the calibration tag having the calibration data encoded thereon, wherein the calibration data comprises a calibration table that associates an output wavelength with one or more inputs;

decoding the information read from the calibration tag to extract the calibration data; and

writing the calibration data to the memory.

40. The process of claim 39 wherein the calibration tag comprises an optically readable symbol.

41. The process of claim 40 wherein the optically readable symbol is a linear bar code or a matrix code.

42. The process of claim 39 wherein the calibration tag comprises a radio frequency (RF) tag.

43. A process comprising:

reading information from a calibration tag attached to a tunable laser, the tunable laser having calibration data associated therewith and a controller with a memory coupled thereto, and the calibration tag having encoded thereon a locator identifying where the calibration data can be found, wherein the calibration data comprises a calibration table that associates an output wavelength with one or more inputs;

using the information read from the calibration tag, finding a location where the calibration data is stored; and

retrieving the calibration data from the location.

44. The process of claim 43, further comprising writing the calibration data to the memory.

45. The process of claim 43 wherein the calibration tag comprises an optically readable symbol.

46. The process of claim 45 wherein the optically readable symbol is a linear bar code or a matrix code.

47. The process of claim 43 wherein the calibration tag comprises a radio frequency (RF) tag.

48. The process of claim 43 wherein using the information read from the calibration tag comprises extracting the locator encoded in the calibration tag to identify the location where the calibration data can be found.

49. The process of claim 43 wherein the locator is a network address identifying a network-accessible location where the calibration data is stored.

50. The process of claim 49 wherein the location where the calibration data is stored is a network-accessible database.

51. The process of claim 50 wherein retrieving the calibration data comprises:

accessing the network-accessible database where the calibration data is stored, and

downloading the calibration data from the network-accessible database via a network.