Optical fiber management system and method

• US 6,741,785 B2
• Filed: 04/19/2002
• Issued: 05/25/2004
• Est. Priority Date: 04/19/2002
• Status: Expired due to Fees

• Current Assignee: Plexus Corporation
• Original Assignee: Plexus Corporation
• Inventors: Johnson, Michael J., Kleis, Steven J., Barthel, William F., Anderson, Laurie M.
• Primary Examiner(s): Ullah, Akm Enayet
• Assistant Examiner(s): CONNELLY CUSHWA, MICHELLE R
• Application Number:
  US10/125,916
• Publication Number:
  US 20030210883A1
• Time in Patent Office: 767 Days
• Field of Search: 385/134-138, 385/14
• US Class Current: 385/135
• CPC Class Codes: G02B 6/4452 Distribution frames
• CPC Class Codes: G02B 6/44526 Panels or rackmounts covering a whole width of the frame or rack
• CPC Class Codes: G02B 6/44528 Patch-cords; Connector arrangements in the system or in the box routing arrangements H04Q1/00
• CPC Class Codes: G02B 6/4454 with splices

Abstract

An optical fiber ramp management system provides a system, device and method for organizing, managing and storing optical fiber during and after the production of an opto-electronic assembly. Opto-electronic components are arranged on a substrate located at a first level so as to define a space between the components. The space defines an optical fiber pathway along the surface of the substrate through which optical fibers formed as fiber bundle travel. A ramp supports the fiber bundle as it extends from the substrate to a storage tray located at a second level. The optical fibers are retained on the storage tray as a plurality of unconstrained loops. The pathway, ramp and tray are formed to maintain the radius of curvature of the optical fiber at or above the minimum bend radius of the fiber.

Claims

1. A device for storing optical fiber such as optical fiber extending from a component between a plurality of optical components, said optical fiber having a minimum bend radius, said device comprising:

a tray having a storage area for accommodating an unconstrained loop of the optical fiber, the tray configured to accommodate any length of a portion of optical fiber;

an optical fiber inlet and outlet through which the optical fiber loop can pass into and out of said tray; and

an optical fiber guide for preventing an optical fiber loop stored in the tray from having a radius of curvature less than the minimum bend radius and permitting storage in the tray of an unconstrained fiber loop.

2. The device of claim 1 wherein the optical fiber inlet and optical fiber outlet each comprise a single opening.

3. The device of claim 1 wherein the optical fiber inlet and the optical fiber outlet each comprise a separate opening.

4. The device of claim 1 further comprising a plurality of optical fibers disposed on said tray.

5. The device of claim 4 wherein said plurality of optical fibers that enter said inlet is a fiber bundle.

6. The device of claim 5 wherein the optical fibers on the tray are unbundled optical fiber loops.

7. The device of claim 6 wherein the length of said unbundled optical fiber loops is from about 6 inches to 72 inches.

8. The device of claim 4 wherein at least two optical fibers have a different length.

9. The device of claim 1 wherein the tray further comprises upstanding perimeter sidewalls.

10. The device of claim 1 wherein said tray further comprises a perimeter edge and a sidewall bounds at least a portion of said perimeter edge.

11. The device of claim 10 wherein said sidewall further comprises an upper portion and a retaining member extends from said upper portion of said wall over at least a portion of said tray for retaining said loop of optical fiber on the tray.

12. The device of claim 11 wherein said retaining member extends over at least a portion of said storage area.

13. The device of claim 1 wherein said guide further comprises a teardrop-shaped body having an upper curved portion, said upper curved portion having a radius of curvature that is greater than or equal to said minimum bend radius.

14. The device of claim 1 wherein said guide further comprises a curved shape having a radius of curvature that is greater than or equal to said minimum bend radius.

15. The device of claim 1 wherein said guide further comprises an array of a plurality of spaced-apart upright members, said array defining a radius of curvature that is greater than or equal to said minimum bend radius.

16. The device of claim 1 wherein said guide further comprises an optical component.

17. The device of claim 1 wherein said optical components further comprise opto-electronic components.

18. The device of claim 1 wherein the loop of optical fiber is selected from the group consisting of an open loop and a closed loop.

19. The device of claim 1 wherein the tray lacks a guideway defining an upper boundary for the loop of optical fiber.

20. The device of claim 1 wherein the length of the optical fiber is between about six inches to about 72 inches.

21. The device of claim 1 wherein the optical fiber is not wrapped upon itself.

22. A device for storing optical fiber in proximity to and for dissipating heat from an assembly having optical fiber and a plurality of electronic and opto-electronic components located thereon, at least some said components radiating heal when said assembly is operated, the device comprising:

an optical fiber storage tray having a base adapted to support an unconstrained loop of optical fiber, said base having at least one base perforation through which heal can freely pass, the tray configured to accommodate any length of a portion of optical fiber; and

an optical fiber inlet and outlet through which a loop of optical fiber passes into and out of said tray respectively such that heat dissipating from at least one of said components passes through the perforation.

23. The device of claim 22 wherein said base has a top surface and a bottom surface and at least one fin extending along a portion of the bottom surface, said fin directing heated air in a desired direction.

24. The device of claim 22 wherein said tray further comprises an optical fiber guide for preventing an optical fiber loop stored in the tray from having a radius of curvature less than the minimum bend radius of the fiber.

25. The device of claim 22 further comprising a plurality of base perforations.

26. The device of claim 25 wherein at least about 50% of the base ar a is composed of said base perforations.

27. The device of claim 22 wherein a portion of the optical fiber stored in the tray traverses a portion of the perforation.

28. A device for storing optical fiber in proximity to and for dissipating heat from an assembly having optical fiber and a plurality of electronic and optoelectronic components located thereon, at least some said components radiating heat when said assembly is operated, the device comprising:

a tray adapted to accommodate an unconstrained loop of optical fiber, the tray having a base, said base having a top surface, a bottom surface and a base fin extending along a portion of the bottom surface of the base such that the fin dissipates heat away from at least some of said components; and

an optical fiber inlet through which a loop of optical fiber passes into said tray.

29. The device of claim 28 further comprising a plurality of spaced apart base fins.

30. The device of claim 28 wherein said tray is composed of high thermal conductivity material.

31. A method of storing excess length of optical fibers extending between a plurality of optical components located on a substrate, said optical fibers having a minimum bend radius, the method comprising:

providing a tray having an optical fiber inlet and a storage area for accommodating unconstrained loops of optical fibers, the tray configured to accommodate any length of a portion of optical fiber;

passing the optical fibers through said optical fiber inlet and into said storage area; and

forming an unconstrained loop from each of said optical fibers on said tray to store excess fiber length on the tray.

32. The method of claim 31 wherein said unconstrained loops each have a radius of curvature greater than or equal to the minimum bend radius of the optical fiber.

33. The method of claim 32 wherein said optical fibers in the optical fiber inlet are present as a fiber bundle.

34. The method of claim 33 further comprising unbundling the fiber bundle in the storage area.

35. The method of claim 31 further comprising passing the optical fibers from the tray through an optical fiber tray outlet.

36. The method of claim 31 wherein the substrate is located at a first level, the method further comprising positioning the tray at a second level.

37. The method of claim 36 further comprising moving said tray away from said substrate and exposing said components.

38. The method of claim 31 further comprising routing said optical fibers on a ramp to extend from said substrate to said tray.

39. The method of claim 31 wherein at least two optical fibers have a different length.

40. The method of claim 31 wherein the unconstrained loop is selected from the group consisting of an open loop and a closed loop.