Composite cable

Patent metadata

Field	Value
Publication number	US-9921380-B2
Application number	US-201615076738-A
Country	US
Kind code	B2
Filing date	Mar 22, 2016
Priority date	Mar 22, 2016
Publication date	Mar 20, 2018
Grant date	Mar 20, 2018

Abstract

An optical fiber cable comprising a stack of optical fiber ribbons. The stack comprises corner fibers at the corners of the stack, edge fibers the edges of the stack, and internal fibers that are internal to the stack. The corner fibers have a higher tolerance to fiber bending (or lower sensitivity to bending) than the internal fibers.

First claim

What is claimed is:

1. A fiber-optic cable comprising:
(a) a tube;
(b) a stack of optical fiber ribbons located in the tube, the stack comprising:
(b1) a corner fiber located at a corner of the stack, the corner fiber comprising a coating having an outer diameter that is approximately 200 micrometers, the corner fiber being compliant with ITU-T G.657.A2;
(b2) an edge fiber located at an edge of the stack, the edge fiber comprising a coating having an outer diameter that is approximately 200 micrometers; and
(b3) an internal fiber located within the stack, the internal fiber having a higher sensitivity to bending than the corner fiber, the internal fiber comprising a coating having an outer diameter that is approximately 200 micrometers, the internal fiber being compliant with ITU-T G.652.D;

(c) a strength rod located parallel to the tube; and
(d) an outer jacket surrounding the stack, the tube, and the strength rod.

2. The cable of claim 1 , the edge fiber being complaint with ITU-T G.652.D.

3. The cable of claim 1 , the edge fiber being complaint with ITU-T G.657.A1.

4. The cable of claim 1 , the edge fiber being complaint with ITU-T G.657.A2.

5. The cable of claim 1 , the internal fiber further being complaint with ITU-T G.657.A1.

6. A fiber-optic cable comprising:
a stack of optical fiber ribbons;
an internal fiber located within the stack, the internal fiber comprising a coating having an outer diameter that is approximately 200 micrometers, the internal fiber being compliant with ITU-T G.652.D;
a corner fiber located at a corner of the stack, the corner fiber having a lower sensitivity to bending than the internal fiber, the corner fiber comprising a coating having an outer diameter that is approximately 200 micrometers, the corner fiber being compliant with ITU-T G.657.A2; and
an edge fiber located at an edge of the stack, the edge fiber comprising a coating having an outer diameter that is approximately 200 micrometers.

7. The cable of claim 6 , the edge fiber being complaint with ITU-T G.652.D.

8. The cable of claim 6 , the edge fiber being complaint with ITU-T G.657.A1.

9. The cable of claim 6 , the edge fiber being complaint with ITU-T G.657.A2.

10. The cable of claim 6 , the internal fiber further being complaint with ITU-T G.657.A1.

Assignees

• Ofs Fitel Llc

Inventors

• Goddard Timothy
• Weimann Peter A

Classifications

• G02B6/441

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

• G02B6/443

  Protective covering · CPC title

• G02B6/4404 Primary

  Multi-podded · CPC title

• G02B6/4413

  Helical structure · CPC title