Fiber Optic Distribution Device and Fiber Optic Network Including the Same

• US 20100202745A1
• Filed: 02/05/2010
• Published: 08/12/2010
• Est. Priority Date: 02/06/2009
• Status: Abandoned Application

• Current Assignee: CCS Technology Inc. (Corning Incorporated)
• Original Assignee: CCS Technology Inc. (Corning Incorporated)
• Inventors: Ciechomski, Tomasz, Fabrykowski, Grzegorz, Sokolowski, Bartlomiej
• Application Number:
  US12/700,837
• Publication Number:
  US 20100202745A1
• Time in Patent Office: Days
• US Class Current: 385/135
• CPC Class Codes: G02B 6/4446 Cable boxes, e.g. splicing boxes with two or more multi fibre cables
• CPC Class Codes: G02B 6/4471 Terminating devices demountable connectors G02B6/3807; Cable clamps

Abstract

A fiber optic distribution device, comprising a housing; said housing providing an inlet opening for an fiber optic riser cable or for an fiber optic tether cable and an outlet opening for said fiber optic riser cable or for said fiber optic tether cable, whereby said inlet opening is assigned to a first side wall of the housing and said outlet opening is assigned to a second, opposite first side wall of the housing; said housing having a third side wall extending between said first side wall and said opposite second side wall, whereby outlet openings for fiber optic drop cables and/or adapters for fiber optic connectors being assigned to said third side wall; said housing further having a bottom wall, whereby at least two spaced apart lines of bend radius control elements are assigned to said bottom wall; whereby each line of bend radius control elements runs in parallel to said third side wall; and whereby in the middle between each two adjacent bend radius control elements of the first line there is positioned each one bend radius control element of the second line thereby providing each two guide channels, namely a first guide channel for guiding optical fibers from the third side wall to the first side wall and a second guide channel for guiding optical fibers from the third side wall to the second side wall.

Claims

1. A fiber optic distribution device, comprising:

a housing, comprising,

a first side wall having an inlet opening for one of a fiber optic riser cable and a fiber optic tether cable;

a second side wall opposite the first side wall, wherein the second side wall has a outlet opening for one of the fiber optic riser cable and the fiber optic tether cable;

a third side wall extending between the first side wall and the second side wall, wherein the third side wall is configured to have one or both of at least one outlet opening for a fiber optic drop cable and a plurality of fiber optic connector adapters; and

a bottom wall;

a first plurality of bend radius control elements positioned on the bottom wall; and

a second plurality of bend radius control elements positioned on the bottom wall, wherein at least one of the second plurality of bend radius control elements positions such that it aligns with a space between two adjacent ones of the first plurality of bend radius control elements, thereby providing a first guide channel for guiding optical fibers from the third side wall to the first side wall and a second guide channel for guiding optical fibers from the third side wall to the second side wall.

2. The fiber optic distribution device of claim 1, wherein the first side wall has another of at least one outlet opening for the fiber optic drop cable.

3. The fiber optic distribution device of claim 1, wherein the second side wall has another of at least one outlet opening for the fiber optic drop cable.

4. The fiber optic distribution device of claim 1, wherein the first plurality of bend radius control elements is aligned in a first line, and wherein the second plurality of bend control elements is aligned in a second line, and wherein the first line and the second line align generally parallel to the third side wall,

5. The fiber optic distribution device of claim 4, wherein at least one of the first plurality of bend radius control elements comprises two bend radius control side walls converging in the direction of the second line, and wherein at least one of the plurality of second bend radius control elements comprises two bend radius control side walls converging in the direction of the first line.

6. A fiber optic distribution device, comprising:

a housing, comprising,

a first side wall having an inlet opening for one of a fiber optic riser cable and a fiber optic tether cable, and wherein the first side wall has a first fiber optic drop cable outlet opening;

a second side wall opposite the first side wall, wherein the second side wall has an outlet opening for one of the fiber optic riser cable and the fiber optic tether cable, and wherein the second side wall has a second fiber optic drop cable outlet opening;

a bottom wall;

a first plurality of strain relief elements positioned on the bottom wall, wherein one of the first plurality of strain relief elements is configured to provide strain relief for a fiber optic drop cable running through one of the first fiber optic drop cable outlet opening and second fiber optic drop cable outlet opening; and

a first plurality of cable tie guides, wherein ones of the first plurality of cables tie guides are positioned at ones of the first plurality of strain relief elements, and wherein at least one of the first plurality of cable tie guides is adapted to mount a cable tie for fixing the fiber optic drop cable to one of the first plurality of strain relief elements.

7. The fiber optic distribution device of claim 6, wherein the first plurality of strain relief elements and the first plurality of cable tie guides align generally parallel to the first side wall and the second side wall.

8. The fiber optic distribution device of claim 7, further comprising a second plurality of strain relief elements and a second plurality of cable tie guides, wherein ones of the second plurality of cables tie guides are positioned at ones of the second plurality of strain relief element, and wherein the at least one of the second plurality of cable tie guides is adapted to mount a cable tie for fixing the fiber optic drop cable to one of the second plurality of strain relief elements.

9. The fiber optic distribution device of claim 7, wherein the first plurality of strain relief elements is arranged in a first line and the second plurality of strain relief elements is arranged in a second line, wherein the first line and the second line are spaced apart and parallel, and wherein a strain relief element in the first line is positioned such that it aligns between two adjacent strain relief elements in the second line, and wherein a cable guide element positioned by one of the strain relief elements in the first line is positioned such that it aligns between two adjacent cable tie guide elements positioned by two adjacent strain relief elements in the second line.

10. A fiber optic network, comprising:

a riser cable, comprising,

a cable jacket surrounding a plurality of optical fibers;

a furcation adapter mounted to a first end of the riser cable, the furcation adapter splitting out each optical fiber of the plurality of optical fibers of the riser cable in a way that each of the splitted out optical fibers is surrounded by an individual protection tube, wherein each of the splitted out optical fibers can be connected to a respective optical fiber of a distribution cable;

at least one first fiber optic distribution device carrying connection points in order to connect optical fibers of the riser cable to optical fibers of a drop cable; and

at least one second fiber optic distribution device carrying connection points to connect the optical fibers of the drop cable to optical fibers of a optical network terminal cable running to a subscriber.

11. The fiber optic network of claim 10, wherein a second end of the riser cable enters and exits the at least one first fiber optic distribution device.

12. The fiber optic network of claim 11, wherein at least one of the optical fibers of the riser cable passes though the at least one first fiber optic distribution device as an uncut optical fiber.

13. The fiber optic network of claim 11, wherein at least one of the optical fibers of the riser cable is connected inside the at least one first fiber optic distribution device to at least one of the optical fibers of the drop cable.

14. The fiber optic network of claim 13, wherein the at least one optical fiber of the riser cable is connected to the at least one of the optical fibers of the drop cable directly.

15. The fiber optic network of claim 13, wherein the at least one optical fiber of the riser cable is connected to the at least one of the optical fibers of the drop cable indirectly via a pigtail.

16. The fiber optic network of claim 10, wherein the riser cable comprises at least one mid span access location, wherein at the at least one mid span access location a tether cable comprising unspliced optical fibers split off from the riser cable.

17. The fiber optic network of claim 16, wherein the tether cable enters the at least one first fiber optic distribution device;

and wherein at least one of the optical fibers of the tether cable connects inside the at least one first fiber optic distribution device to at least one of the optical fibers of the drop cable.

18. The fiber optic network of claim 17, wherein the at least one of the optical fibers of tether cable connects to the at least one of the optical fibers of the drop cable directly.

19. The fiber optic network of claim 17, wherein the at least one of the optical fibers of tether cable connects to the at least one of the optical fibers of the drop cable indirectly via pigtails.

20. A method for distributing fiber optic service in a multiple dwelling unit, comprising the steps of:

providing a fiber optic distribution device having a housing with a first side wall, a second side wall, a third side wall, and a bottom wall, wherein the first side wall has an inlet opening configured for one of a fiber optic riser cable and a fiber optic tether cable, wherein the second side wall has an outlet opening configured for one of a fiber optic riser cable and a fiber optic tether cable, and wherein the third side wall is configured to have one or both of at least one outlet opening for a fiber optic drop cable and a plurality of fiber optic connector adapters;

mounting the fiber optic distribution device in the multiple dwelling unit;

routing a fiber optic riser cable to the fiber optic distribution device, wherein optical fibers of the fiber optic riser cable are optically connected to respective optical fibers of a fiber optic distribution cable;

routing a fiber optic drop cable to the fiber optic distribution device;

optically connecting in the housing one of the optical fibers of the riser cable with an optical fiber of the drop cable, thereby optically connecting the optical fiber of the fiber optic drop cable to one of the optical fibers of the distribution cable through the riser cable;

positioning a first plurality of bend radius control elements on the bottom wall, and

positioning a second plurality of bend radius control elements on the bottom wall, wherein at least one of the second plurality of bend radius control elements positions such that it aligns with a space between two adjacent ones of the first plurality of bend radius control elements, thereby providing a first guide channel for guiding optical fibers from the third side wall to the first side wall and a second guide channel for guiding optical fibers from the third side wall to the second side wall.

21. The method of claim 20, further comprising the steps of:

positioning a first plurality of strain relief elements on the bottom wall, wherein one of the first plurality of strain relief elements is configured to provide strain relief for a fiber optic drop cable running through one of the first fiber optic drop cable outlet opening and second fiber optic drop cable outlet opening; and

positioning a first plurality of cable tie guides, wherein ones of the first plurality of cables tie guides are positioned at ones of the first plurality of strain relief elements, and wherein at least one of the first plurality of cable tie guides is adapted to mount a cable tie for fixing the fiber optic drop cable to one of the first plurality of strain relief elements.

22. The method of claim 21, further comprising the steps of:

positioning a second plurality of strain relief elements on the bottom wall, wherein one of the second plurality of strain relief elements is configured to provide strain relief for a fiber optic drop cable running through one of the first fiber optic drop cable outlet opening and the second fiber optic drop cable outlet opening;

positioning a second plurality of cable tie guides, wherein ones of the second plurality of cables tie guides are positioned at ones of the second plurality of strain relief elements, and wherein at least one of the second plurality of cable tie guides is adapted to mount a cable tie for fixing the fiber optic drop cable to one of the second plurality of strain relief elements.

23. The method of claim 22, wherein the first plurality of strain relief elements is arranged in a first line and the second plurality of strain relief elements is arranged in a second line, wherein the first line and the second line are spaced apart and parallel, and wherein a strain relief element in the first line is positioned such that it aligns between two adjacent strain relief elements in the second line, and wherein a cable guide element positioned by one of the strain relief elements in the first line is positioned such that it aligns between two adjacent cable tie guide elements positioned by two adjacent strain relief elements in the second line.