Optical communication cable

Patent metadata

Field	Value
Publication number	US-12554086-B2
Application number	US-202418403078-A
Country	US
Kind code	B2
Filing date	Jan 3, 2024
Priority date	Sep 27, 2013
Publication date	Feb 17, 2026
Grant date	Feb 17, 2026

Abstract

An optical communication cable is provided having a cable body with an inner surface defining a passage within the cable body and a plurality of core elements within the passage. A film surrounds the plurality of core elements, wherein the film directs a radial force inward onto the plurality of core elements to restrain and hold the plurality of core elements in place.

First claim

What is claimed is:

1 . An optical fiber cable, comprising:
a plurality of optical fibers; a polymeric film surrounding the plurality of optical fibers and extending longitudinally along a length of the optical fiber cable, the polymeric film being contiguous in both a circumferential and an axial direction, and wherein a thickness of the polymeric film is less than 100 micrometers; a rip cord, the polymeric film further surrounding the rip cord; and a cable jacket having an interior cavity, the plurality of optical fibers and the polymeric film being disposed within the interior cavity, wherein the polymeric film is at least partially bonded to the cable jacket such that when the cable jacket is opened the polymeric film is also opened.

2 . The optical fiber cable of claim 1 , wherein the polymeric film is formed from a linear low-density polyethylene (LLDPE).

3 . The optical fiber cable of claim 1 , wherein the polymeric film is formed from a material having a modulus of elasticity between 600 MPa and 1000 MPa.

4 . The optical fiber cable of claim 1 , wherein the thickness of the polymeric film is between 25 micrometers and 75 micrometers.

5 . The optical fiber cable of claim 1 , wherein the cable jacket comprises a co-extruded discontinuity, the discontinuity formed of a first polymer material that is dissimilar to a second polymer material of the cable jacket.

6 . The optical fiber cable of claim 1 , further comprising a water-blocking gel that is disposed within a region surrounded by the polymeric film, the water-blocking gel surrounding the plurality of optical fibers.

7 . The optical fiber cable of claim 1 , wherein the polymeric film is formed of a material comprising at least one of polyester or polypropylene.

8 . The optical fiber cable of claim 1 , wherein the plurality of optical fibers is a first plurality of optical fibers, the optical fiber cable further comprising:
a second plurality of optical fibers; a first polymeric element surrounding the first plurality of optical fibers; a second polymeric element surrounding the second plurality of optical fibers, wherein the first polymeric element and the second polymeric element are stranded about one another, and wherein the polymeric film surrounds the first and second polymeric elements and maintains the first and second polymeric elements in their stranded state.

9 . An optical fiber cable, comprising:
a plurality of core elements, the core elements comprising an optical fiber; a polymeric film surrounding the core elements and extending longitudinally along a length of the optical fiber cable, the polymeric film being contiguous in both a circumferential and an axial direction; and a cable jacket formed from a first polymer material, the cable jacket comprising a co-extruded discontinuity that is formed from a second polymer material that is dissimilar to the first polymer material, the cable jacket bonded to the polymeric film such that when the cable jacket is opened by way of the co-extruded discontinuity, the polymeric film is also opened; wherein the optical fiber is a first optical fiber, the core elements further comprising:
a second optical fiber;
a first polymeric element surrounding the first optical fiber; and
a second polymeric element surrounding the second optical fiber, wherein the first polymeric element and the second polymeric element are stranded about one another, and wherein the polymeric film surrounds the first and second polymeric elements and maintains the first and second polymeric elements in their stranded state; and wherein an average static friction force for a 200 millimeter section of the stranded first and second polymeric elements is at least 20 N.

10 . The optical fiber cable of claim 9 , wherein the second polymer material comprises polypropylene.

11 . The optical fiber cable of claim 10 , wherein the first polymer material comprises polyethylene.

12 . The optical fiber cable of claim 9 , wherein the polymeric film has a thickness of less than 100 micrometers.

13 . The optical fiber cable of claim 12 , wherein the polymeric film is formed from a linear low-density polyethylene (LLDPE).

14 . The optical fiber cable of claim 9 , wherein the first and second polymeric elements are S-Z stranded.

Assignees

• Corning Optical Communications LLC

Inventors

• Emmerich Michael
• Mcalpine Warren Welborn
• Wuensch Guenter

Classifications

• G02B6/44384

  the means comprising water blocking or hydrophobic materials (G02B6/4439, G02B6/4479 take precedence) · CPC title

• G02B6/4431

  with provision in the protective covering, e.g. weak line, for gaining access to one or more fibres, e.g. for branching or tapping (break-out terminations G02B6/4471) · CPC title

• G02B6/441 Primary

  built up from sub-bundles (G02B6/4429, G02B6/4439, G02B6/4479 take precedence) · CPC title

• G02B6/4433

  Double reinforcement laying in straight line with optical transmission element · CPC title

• G02B6/4434

  Central member to take up tensile loads · CPC title