Manufacture and testing of fiber optic cassette

Patent metadata

Field	Value
Publication number	US-11467347-B2
Application number	US-202016947103-A
Country	US
Kind code	B2
Filing date	Jul 17, 2020
Priority date	Sep 28, 2012
Publication date	Oct 11, 2022
Grant date	Oct 11, 2022

Abstract

A double flexible optical circuit includes: a flexible substrate supporting a plurality of optical fibers; a first connector terminating the optical fibers at a first end of the double flexible optical circuit; and a second connector terminating the optical fibers at a second end of the double flexible optical circuit. Each of the optical fibers is positioned in one of a plurality of separate extensions formed by the flexible substrate as the optical fibers extend from the first connector to the second connector. The first and second connectors are configured to be tested when the first and second connectors are connected through the double flexible optical circuit. The double flexible optical circuit is configured to be divided in half once the testing is complete to form two separate flexible optical circuits.

First claim

What is claimed is:

1. A method for forming two separate flexible optical circuits, the method comprising:
providing a double flexible optical circuit including a flexible substrate supporting a plurality of optical fibers, with a first connector terminating the optical fibers at a first end of the double flexible optical circuit, and a second connector terminating the optical fibers at a second end of the double flexible optical circuit, wherein each of the optical fibers is positioned in one of a plurality of separate extensions formed by the flexible substrate as the optical fibers extend from the first connector to the second connector;
connecting the first and second connectors to equipment to test the double flexible optical circuit;
testing the double flexible optical circuit;
after testing, dividing the double flexible optical circuit in half to form the two separate flexible optical circuits; and
terminating free ends of each of the two separate flexible optical circuits.

2. The method of claim 1 , wherein the double flexible optical circuit is a mirror image across a dividing line.

3. The method of claim 1 , wherein the first and second connectors are MPO format connectors.

4. The method of claim 1 , further comprising folding the double flexible optical circuit along a mid-line to form a U-shape during polishing of the first and second connectors.

5. The method of claim 4 , wherein the mid-line is perpendicular to a dividing line indicating where the double flexible optical circuit is divided in half once the testing is completed.

6. The method of claim 1 , wherein the double flex optical circuit is configured as a patch cord when tested.

7. The method of claim 1 , further comprising connecting the first and second connectors to testing equipment when tested.

8. The method of claim 1 , further comprising testing the double flex optical circuit for one or more of geometry and attenuation.

9. The method of claim 1 , further comprising cleaving the double flex optical circuit to form the two separate flexible optical circuits.

10. A method for forming two separate flexible optical circuits, the method comprising:
providing a double flexible optical circuit including a flexible substrate supporting a plurality of optical fibers, with a first connector terminating the optical fibers at a first end of the double flexible optical circuit, and a second connector terminating the optical fibers at a second end of the double flexible optical circuit;
testing the double flexible optical circuit through the first and second connectors;
after testing, dividing the double flexible optical circuit in half to form the two separate flexible optical circuits; and
terminating free ends of each of the two separate flexible optical circuits.

11. The method of claim 10 , wherein the double flexible optical circuit is a mirror image across a dividing line.

12. The method of claim 10 , wherein the first and second connectors are MPO format connectors.

13. The method of claim 10 , wherein the double flex optical circuit is configured as a patch cord when tested.

14. The method of claim 10 , further comprising connecting the first and second connectors to testing equipment when tested.

15. The method of claim 10 , further comprising testing the double flex optical circuit for one or more of geometry and attenuation.

16. The method of claim 10 , further comprising cleaving the double flex optical circuit to form the two separate flexible optical circuits.

17. A method for forming two separate flexible optical circuits, the method comprising:
providing a double flexible optical circuit including a flexible substrate supporting a plurality of optical fibers, with a first connector terminating the optical fibers at a first end of the double flexible optical circuit, and a second connector terminating the optical fibers at a second end of the double flexible optical circuit;
folding the double flexible optical circuit along a mid-line to form a U-shape during polishing of the first and second connectors;
testing the double flexible optical circuit through the first and second connectors; and
after testing, dividing the double flexible optical circuit in half to form the two separate flexible optical circuits.

18. The method of claim 17 , wherein the mid-line is perpendicular to a dividing line indicating where the double flexible optical circuit is divided in half once the testing is completed.

Assignees

• Commscope Connectivity Uk Ltd
• Commscope Connectivity Spain Sl
• Commscope Asia Holdings Bv
• Commscope Technologies Llc

Inventors

• Murray David P
• Bolhaar Ton
• Schneider Paul
• Mateo Rafael
• Cobacho Luis
• Wentworth Michael
• Brandt Steven J
• Buijs Marcellus P J
• Dorrestein Alexander
• Rietveld Jan Willem

Classifications

• G02B6/3608 Primary

  Fibre wiring boards, i.e. where fibres are embedded or attached in a pattern on or to a substrate, e.g. flexible sheets (optical ribbon cables in support members G02B6/4401) · CPC title

• G02B6/3878

  comprising a plurality of ferrules, branching and break-out means · CPC title

• G02B6/3863

  fabricated by using polishing techniques (grinding of the fibre ends B24B19/226) · CPC title

• G02B6/3885

  Multicore or multichannel optical connectors, i.e. one single ferrule containing more than one fibre, e.g. ribbon type (optical ribbon cable G02B6/4403, G02B6/448) · CPC title

• G02B6/40

  having fibre bundle mating means · CPC title