High Density Optical Fiber Distribution Enclosure

• US 20100195970A1
• Filed: 04/12/2010
• Published: 08/05/2010
• Est. Priority Date: 05/18/2005
• Status: Active Grant

• Current Assignee: Corning Optical Communications LLC (Corning Incorporated)
• Original Assignee: Daniel S. Mcgranahan, Guy Castonguay, Ronald L. Mudd, Works Antwan J
• Inventors: Castonguay, Guy, Works, Antwan J., Mudd, Ronald L., McGranahan, Daniel S.
• Granted Patent: US 7,936,962 B2
• Time in Patent Office: Days
• US Class Current: 385/135
• CPC Class Codes: G02B 6/4442 Cap coupling boxes

Abstract

An optical fiber distribution enclosure includes a housing defining an interior, a first fiber distribution area disposed within an upper portion of the interior, a second fiber distribution area disposed within a lower portion of the interior and a signal splitting area disposed between the fiber distribution areas. A splitter module secured within the signal splitting area has a connectorized splitter input optical fiber and connectorized splitter output optical fibers. A fiber parking area is movably disposed within the lower portion adjacent the second fiber distribution area for temporarily storing splitter output optical fibers that are not routed to the fiber distribution areas. An input fiber distribution area disposed within the interior interconnects an optical fiber of a feeder cable with the splitter input optical fiber. The splitter output optical fibers are eventually routed to a fiber distribution area and interconnected with a corresponding optical fiber of a distribution cable.

Claims

1. An optical fiber distribution enclosure for splitting an optical signal carried on at least one optical fiber of a feeder cable into multiple optical signals carried on a plurality of optical fibers of a distribution cable, the enclosure comprising:

a housing defining an interior;

a first fiber distribution area disposed within an upper portion of the interior;

a second fiber distribution area disposed within a lower portion of the interior; and

a signal splitting area disposed within a center portion of the interior between the upper portion and the lower portion, the signal splitting area comprising at least one splitter module configured for splitting an optical signal carried on at least one splitter input optical fiber into a plurality of optical signals carried on a corresponding plurality of splitter output optical fibers;

wherein the first fiber distribution area and the second fiber distribution area each comprise a fiber distribution field for optically connecting at least one splitter output optical fiber with a corresponding one of the plurality of optical fibers of the distribution cable.

2. An optical fiber distribution enclosure according to claim 1 further comprising a fiber parking area comprising a parking field for storing at least one splitter output optical fiber that is not routed to the first fiber distribution area or the second fiber distribution area.

3. An optical fiber distribution enclosure according to claim 2 wherein the housing defines a longitudinal axis and wherein the fiber distribution field of each of the first fiber distribution area and the second fiber distribution area defines a first plane generally parallel to the longitudinal axis and the fiber parking field of the fiber parking area defines a second plane not generally parallel to the longitudinal axis.

4. An optical fiber distribution enclosure according to claim 3 wherein the fiber parking field is movable relative to the fiber distribution field of each of the first fiber distribution area and the second fiber distribution area to provide increased access to the fiber parking field.

5. An optical fiber distribution enclosure according to claim 4 wherein the fiber parking field is movable in the direction of the second plane.

6. An optical fiber distribution enclosure according to claim 2 wherein the fiber parking area is disposed within the lower portion of the interior of the housing adjacent the second fiber distribution area.

7. An optical fiber distribution enclosure according to claim 1 further comprising an input fiber distribution area for optically connecting the at least one splitter input fiber with the at least one optical fiber of the feeder cable.

8. An optical fiber distribution enclosure according to claim 7 wherein the input fiber distribution area is disposed within the interior of the housing adjacent the lower portion.

9. An optical fiber distribution enclosure according to claim 1 wherein each of the splitter output optical fibers is a pre-connectorized pigtail comprising a bend insensitive optical fiber and having a predetermined length.

10. An optical fiber distribution enclosure according to claim 1 wherein the housing comprises a base and a cover that sealingly engages the base to protect the interior of the housing from adverse environmental effects.

11. An optical fiber distribution enclosure according to claim 1 wherein the housing is a below grade closure for use in a buried optical network.

12. An optical fiber distribution enclosure comprising:

a housing defining an interior and a longitudinal axis;

a first fiber distribution area disposed within the interior of the housing and comprising a first fiber distribution field for optically connecting at least one of a plurality of splitter output optical fibers with a corresponding one of a plurality of optical fibers of a distribution cable, the fiber distribution field defining a first plane generally parallel to the longitudinal axis; and

a fiber parking area disposed within the interior of the housing and comprising a fiber parking field for storing at least one unused splitter output optical fiber, the fiber parking field defining a second plane that is not generally parallel to the longitudinal axis.

13. An optical fiber distribution enclosure according to claim 12 further comprising:

a second fiber distribution area disposed within the interior of the housing and comprising a second fiber distribution field for optically connecting at least one of the plurality of splitter output optical fibers with at a corresponding one of the plurality of optical fibers of the distribution cable; and

a signal splitting area disposed within the interior of the housing and comprising at least one splitter module for splitting an optical signal carried on at least one optical fiber of a feeder cable into a plurality of optical signals carried on a plurality of the splitter output optical fibers;

wherein the signal splitting area is disposed medially between the first fiber distribution field and the second fiber distribution field.

14. An optical fiber distribution enclosure according to claim 13 wherein each of the splitter output optical fibers is a pre-connectorized pigtail having a predetermined length.

15. An optical fiber distribution enclosure according to claim 12 wherein the fiber parking field is movable relative to the first fiber distribution field of the first fiber distribution area in the direction of the second plane to provide increased access to the fiber parking field.

16. An optical fiber distribution enclosure according to claim 13 further comprising an input fiber distribution area for optically connecting at least one splitter input fiber with the at least one optical fiber of the feeder cable.

17. An optical fiber distribution enclosure according to claim 12 wherein the housing comprises a base and a cover that sealingly engages the base to protect the interior of the housing from adverse environmental effects.

18. A closure for providing centralized splitting in an optical network, the closure comprising:

a base;

a frame mounted on the base;

a cover enclosing the frame and in sealing engagement with the base to define an environmentally protected interior;

a signal splitting area disposed on the frame within the interior and comprising at least one splitter module for splitting an optical signal carried on at least one optical fiber of a feeder cable into a plurality of optical signals carried on a plurality of splitter output optical fibers; and

a first fiber distribution area disposed on the frame within the interior and comprising a first fiber distribution field for optically connecting at least one of the plurality of splitter output fibers with a corresponding one of a plurality of optical fibers of a distribution cable.

19. A closure according to claim 18 further comprising:

a second fiber distribution area disposed on the frame within the interior and comprising a second fiber distribution field for optically connecting at least one of the plurality of splitter output fibers with a corresponding one of the plurality of optical fibers of the distribution cable;

wherein the signal splitting area is disposed medially between the first fiber distribution area and the second fiber distribution area; and

wherein each of the splitter output optical fibers is a pre-connectorized pigtail having a predetermined length.

20. A closure according to claim 18 further comprising:

a fiber parking area disposed on the frame within the interior and comprising a fiber parking field for storing at least one unused splitter output fiber;

wherein the first fiber distribution field of the first fiber distribution area defines a first plane; and

wherein the fiber parking field defines a second plane that is not parallel to the first plane.