Factory spliced cable assembly

• US 7,454,106 B2
• Filed: 08/13/2007
• Issued: 11/18/2008
• Est. Priority Date: 08/14/2006
• Status: Expired due to Fees

• Current Assignee: CommScope Technologies, LLC (CommScope Holding Company, Inc.)
• Original Assignee: ADC Telecommunications Incorporated (TE Connectivity Limited)
• Inventors: Gronvall, Erik, Lu, Yu, Cobb, John Clifton III
• Primary Examiner(s): Pak; Sung H
• Application Number:
  US11/837,862
• Publication Number:
  US 20080080818A1
• Time in Patent Office: 463 Days
• Field of Search: 385/100
• US Class Current: 385/100
• CPC Class Codes: G02B 6/4403 with ribbon structure G02B6/4429, G02B6/4439, G02B6/4479 take precedence
• CPC Class Codes: G02B 6/4411 Matrix structure
• CPC Class Codes: G02B 6/4475 with provision for lateral branching G02B6/4431 takes precedence

Abstract

To optically couple a tether to a ribbonized distribution cable, a cut is made in the distribution cable, exposing the ribbons inside. The correct ribbon is located and spliced to a tether. A splice protection sleeve is applied to the splice and placed into the existing cut on the cable so as to be recessed within an outer boundary of the cable jacket. The buffer tube from the tether cable is also guided toward the cut and fixed in place. A breakout assembly is installed on the distribution cable to secure the tether to the distribution cable.

Claims

1. A telecommunications cable comprising:

a distribution cable including a cable jacket and a ribbon stack positioned within the cable jacket, the ribbon stack including a first ribbon, the first ribbon including at least a first optical fiber of the first ribbon, the distribution cable including a cut region where a portion of the cable jacket has been removed and where at least the first ribbon is accessible; and

a tether that branches from the distribution cable at the cut region, the tether including a tether buffer tube surrounding at least a first optical fiber of the tether, the first optical fiber of the tether being optically coupled to the first optical fiber of the first ribbon at a coupling location;

wherein the coupling location is recessed within an outer boundary defined by the cable jacket of the distribution cable.

2. The telecommunications cable of claim 1, further comprising a breakout assembly, the breakout assembly including at least a first jacket support.

3. The telecommunications cable of claim 2, wherein the breakout assembly includes a plurality of jacket supports arranged within the cut region of the distribution cable.

4. The telecommunications cable of claim 2, wherein the first jacket support includes a curved surface configured to extend over the cut region, the first jacket support also including legs configured to fit within the cut region.

5. The telecommunications cable of claim 2, wherein the first jacket support has a length extending along a length of the cut region.

6. The telecommunications cable of claim 1, further comprising a transition block mounted to the distribution cable, the transition block being configured to secure the tether to the distribution cable.

7. The telecommunications cable of claim 6, wherein the transition block provides a path along which the first optical fiber of the tether extends into the distribution cable at the cut region.

8. The telecommunications cable of claim 1, further comprising a second tether that branches from the distribution cable at the cut region, the second tether including a second tether buffer tube surrounding an optical fiber of the second tether.

9. The telecommunications cable of claim 1, further comprising a splice sleeve mounted over the coupling location within the outer boundary.

10. A telecommunications cable comprising:

a distribution cable including a cable jacket and a ribbon stack positioned within the cable jacket, the ribbon stack including a first ribbon, the first ribbon including at least a first optical fiber of the first ribbon, the distribution cable including a cut region where a portion of the cable jacket has been removed and where at least the first ribbon is accessible;

a tether that branches from the distribution cable at the cut region, the tether including a tether buffer tube surrounding at least a first optical tether fiber, the first optical tether fiber being optically coupled to the first optical fiber of the first ribbon at a coupling location recessed within an outer boundary defined by the cable jacket of the distribution cable; and

a block defining a cable channel and a tether channel arrangement, the cable channel being configured to receive the distribution cable to mount the block to the distribution cable, the tether channel arrangement configured to receive the first tether fiber from the tether and to transition the first tether fiber into the distribution cable at the cut region, the block being securely coupled to the tether to anchor the tether to the distribution cable.

11. The telecommunications cable of claim 10, wherein the block extends from a first end to a second end and the cable channel extends from the first end of the block to the second end.

12. The telecommunications cable of claim 10, wherein the tether channel arrangement includes a first tether channel and a second tether channel, the first tether channel being adapted to receive at least the first tether fiber and the second tether channel being adapted to receive at least a second tether fiber.

13. The telecommunications cable of claim 12, wherein the second tether fiber is included within a second tether coupled to the distribution cable.

14. The telecommunications cable of claim 10, further comprising a jacket support mounted in the distribution cable at the cut region.

15. The telecommunications cable of claim 14, wherein the jacket support extends along a length of the cut region.

16. The telecommunications cable of claim 14, wherein the jacket support includes a flange curved to match an outer diameter of the cable jacket of the distribution cable.

17. The telecommunications cable of claim 16, wherein the jacket support includes at least a first leg that projects outwardly from the flange, the first leg being sized to fit within the cut region of the distribution cable.

18. The telecommunications cable of claim 17, wherein the first leg is sufficiently long to extend through the cable jacket.

19. The telecommunications cable of claim 10, further comprising an over-mold that encloses and seals the distribution cable at the cut region.

20. The telecommunications cable of claim 10, wherein a cross-sectional area taken at any point along the telecommunications cable is less than one inch in diameter.