Optical switching apparatus and method for use in the construction mode testing of a modular fiber administration system

• US 5,694,511 A
• Filed: 09/09/1996
• Issued: 12/02/1997
• Est. Priority Date: 09/09/1996
• Status: Expired due to Fees

• Current Assignee: Lucent Technologies, Inc. (Nokia Corporation)
• Original Assignee: Lucent Technologies, Inc. (Nokia Corporation)
• Inventors: Pimpinella, Richard Joseph, Reagan, Randy Alan
• Primary Examiner(s): NGO, HUNG NHAT
• Application Number:
  US08/709,943
• Time in Patent Office: 449 Days
• Field of Search: 385/134, 385/135, 385/147
• US Class Current: 385/134
• CPC Class Codes: G02B 6/4441 Boxes
• CPC Class Codes: G02B 6/4452 Distribution frames
• CPC Class Codes: H04Q 1/023 using sliding mechanisms for accessing the interior of the apparatus
• CPC Class Codes: H04Q 1/14 Distribution frames
• CPC Class Codes: H04Q 1/20 Testing circuits or apparatus; Circuits or apparatus for detecting, indicating, or signalling faults or troubles
• CPC Class Codes: H04Q 2201/02 Details of frames
• CPC Class Codes: H04Q 2201/08 Pivotable parts
• CPC Class Codes: H04Q 2201/804 in optical transmission systems

Abstract

A device and method for connecting an optical switch to the optical fibers that terminate on a fiber distribution shelf within a fiber administration system. The optical switch device contains a support plate that is shaped essentially the same as the protective cover of fiber distribution shelf. As such, the support plate of the optical switch device can be joined to a specific fiber distribution shelf by substituting the support plate for the protective cover. An optical switch is affixed to the support plate, wherein the optical switch is sized not to extend beyond the peripheral boundaries of the support plate. As a result, when the support plate is placed over a fiber distribution shelf, the optical switch joined to the support plate does not obscure any other fiber distribution shelf in the fiber administration system.

Claims

1. In an optical fiber administration system having a frame structure and at least one fiber distribution shelf disposed within said frame structure, wherein said at least one fiber distribution shelf contains a plurality of optical connectors that are accessible through an open end of said shelf, an optical switch device comprising:

a support plate having a first side and a second side, wherein said support plate is sized to cover said open end of said fiber distribution shelf;

attachment mechanisms disposed between said support plate and said fiber distribution shelf, wherein said attachment mechanisms enable said support plate to be selectively positioned between a closed condition, where said support plate covers said open end, and an open condition, where said open end remains substantially unobstructed; and

an optical switch affixed to said first side of said support plate, said optical switch having a plurality of leads extending therefrom that are capable of optically coupling to said plurality of optical connectors contained within the fiber distribution shelf.

2. The device according to claim 1, further including a lead support structure, disposed on said second side of said support plate, for retaining said plurality of leads in a confined area when not in use.

3. The device according to claim 1, wherein said support plate has a bottom edge and said attachment mechanisms include hinge elements that attach said bottom edge to said fiber distribution shelf.

4. The device according to claim 3, wherein said hinge elements includes a first element connected to said support plate and a second element connected to said enable fiber distribution shelf, wherein said first element and said second element are detachable from each other when said support plate is positioned at a predetermined orientation with respect to said fiber distribution shelf, thereby enabling said support plate to be selective removed from said fiber distribution shelf without tools.

5. The device according to claim 3, wherein said attachment mechanisms include locking elements that selectively lock said support plate in said closed condition.

6. The device according to claim 1, wherein support plate isolates said plurality of leads within said fiber distribution shelf when said support plate is in said closed condition, thereby preventing said plurality of leads from being inadvertently disturbed.

7. The device according to claim 3, wherein said hinge elements support said support plate in a plain approximately 105°

from vertical when said support plate is in said open condition.

8. The device according to claim 1, wherein said optical switch includes an optical input port that is accessible by an external lead when said support plate is in said closed condition.

9. The device according to claim 1, wherein said optical switch includes an electrical input port that is accessible by an external lead when said support plate is in said closed condition.

10. The device according to claim 1, further including a housing that mounts to said first surface of support plate, wherein said housing defines an enclosure against said support plate that contains said optical switch.

11. The device according to claim 1, wherein said plurality of leads range in number from tweleve to seventy-two.

12. In an optical fiber administration system having a frame structure and at least one fiber distribution shelf disposed within said frame structure, wherein said at least one fiber distribution shelf contains a plurality of optical connectors that are accessible through an open end of said shelf and said open end of said shelf is covered with a protective panel, a method of connecting an optical switch to said plurality of optical connectors comprising the steps of:

providing a support plate that is substantially the same size as said protective cover;

mounting an optical switch to said support plate, wherein said optical switch contains a plurality of optical leads;

removing said protective panel from said fiber distribution shelf; and

connecting said support plate to said fiber distribution shelf in place of said protective panel.

13. The method according to claim 12, wherein said step of connecting said support plate to said fiber distribution shelf includes the substeps of:

attaching said support plate to said fiber distribution shelf in an open position, wherein said support plate does not substantially obstruct said open end of said fiber distribution shelf;

connecting said plurality of optical leads to said plurality of optical connectors; and

repositioning said support plate to a closed position, wherein said support plate obstructs said open end of said fiber distribution shelf and isolates said plurality of optical leads.

14. The method according to claim 13, wherein said step of mounting an optical switch to said support plate, includes mounting said optical switch to a first surface of said support plate, wherein said optical switch extends from said support plate and away from said fiber distribution shelf when said support plate is in said closed position.

15. The method according to claim 12, wherein said protective panel is coupled to hinge elements that extend from said fiber distribution shelf and said step of connecting said support plate to said fiber distribution shelf includes coupling said support plate to said hinge elements.

16. In an optical fiber administration system having a frame structure and a plurality of fiber distribution shelves disposed within said frame structure, wherein each fiber distribution shelf contains a plurality of optical fiber connectors that are accessible through an open end of said fiber distribution shelf and said open end of said fiber distribution shelf is covered with a protective panel, a method of testing optical fibers that lead to said optical fiber connectors, comprising the steps of:

mechanically connecting an optical switch assembly directly to said fiber distribution shelf, wherein said fiber distribution shelf supports said optical switch assembly on said frame;

optically connecting said optical switch assembly to said plurality of optical fiber connectors;

providing a test signal to said optical switch assembly wherein said optical switch assembly selectively directs said test signal to each of said plurality of optical fiber connectors.

17. The method according to claim 16, wherein said fiber administration system includes an optical time domain reflectometer and said step of providing a test signal to said optical switch assembly includes coupling said optical switch assembly to said optical time domain reflectometer.

18. The method according to claim 16, wherein said step of mechanically connecting an optical switch assembly directly to said fiber distribution shelf includes removing said protective panel and covering said open end of said fiber distribution shelf with said optical switch assembly.

19. The method according to claim 16, wherein said optical switch assembly includes a support plate that is substantially the same size as said protective cover and an optical switch that is mounted to one side of said support plate.

20. The method according to claim 19, wherein said step of mechanically connecting an optical switch assembly directly to said fiber distribution shelf includes removing said protective panel from said fiber distribution shelf and connecting said support plate to said fiber distribution shelf in place of said protective panel.