Optical fiber splice element and optical network

Patent metadata

Field	Value
Publication number	US-10436984-B2
Application number	US-201715695854-A
Country	US
Kind code	B2
Filing date	Sep 5, 2017
Priority date	Sep 2, 2016
Publication date	Oct 8, 2019
Grant date	Oct 8, 2019

Abstract

An optical network comprises a fiber distribution cable and a terminal assembly. The terminal assembly receives a plurality of optical fibers from the fiber distribution cable and distributes one or more individual fibers to one or more single fiber bare-fiber holders that hold and protect each single fiber prepared and configured for splicing via an individual splicing element. The splicing element includes an alignment mechanism having a base plate and a clamp plate. At least one of the base plate and clamp plate is formed from a silica material and at least one of the base plate and clamp plate includes an alignment groove or channel configured to receive the first and second optical fibers in an end-to-end manner. The splice element also comprises an optical adhesive disposed in at least a portion of the alignment groove, wherein the optical adhesive is curable via actinic radiation.

First claim

We claim:

1. An optical network, comprising:
a fiber distribution cable; and
a terminal assembly, wherein the terminal assembly receives a plurality of optical fibers from the fiber distribution cable and distributes one or more individual fibers to one or more single fiber bare-fiber holders mounted to the terminal assembly that hold and protect each single fiber prepared and configured for splicing via a splicing element, wherein the splicing element includes an alignment mechanism having a base plate and a clamp plate, the base plate having a plurality of pad structures formed on a major surface thereof, the pads configured to space the base plate and clamp plate from each other to create clearance for the insertion of first and second optical fibers, at least one of the base plate and clamp plate being formed from a silica material, and at least one of the base plate and clamp plate having an alignment groove configured to receive the first and second optical fibers in an end-to-end manner, and an optical adhesive disposed in at least a portion of the alignment groove, wherein the optical adhesive is curable via actinic radiation.

2. The optical network of claim 1 comprising a distributed split network.

3. The distributed split network of claim 2 further comprising an optical indexing circuit disposed in the terminal assembly.

4. The optical network of claim 1 , wherein the fiber distribution cable comprises a multi-fiber stub cable.

5. The optical network of claim 1 comprising a branch tap.

6. An optical network for inside a multi-dwelling unit comprising the optical network of claim 1 .

7. The optical network of claim 1 , wherein the optical adhesive is blue light curable.

8. The optical network of claim 1 , wherein the optical adhesive comprises an adhesive composition containing non-aggregated, surface-modified silica nano-particles dispersed in an epoxy resin.

9. The optical network of claim 1 , wherein the optical adhesive changes color from an uncured state to a cured state.

10. The optical network of claim 1 , wherein the base plate includes the alignment groove formed on a major surface therein.

11. The optical network of claim 1 , further comprising a clip configured to receive the base plate and clamp plate therein and impart a pressing force on the base plate and clamp plate.

12. The optical network of claim 1 , wherein at least one of the base plate and clamp plate is substantially transparent.

13. The optical network of claim 1 , wherein the clamp plate comprises a flexible material.

14. The optical network of claim 1 , wherein the base plate further comprises partial funnel shaped entrance openings at both ends of the alignment groove, the partial funnel shaped entrance openings being wider than the alignment groove.

15. The optical network of claim 1 , wherein the clamp plate comprises an alignment groove formed in a major surface therein.

16. The optical network of claim 1 , wherein the base plate includes a plurality of alignment grooves formed on a major surface therein.

17. The optical network of claim 1 , wherein the silica material comprises a sol-based cast net shaped sintered silica material.

18. The optical network of claim 1 , further comprising a second terminal assembly.

19. The optical network of claim 18 , wherein the terminal assembly is linked to the second terminal assembly via a fiber distribution cable.

20. An optical network, comprising:
a fiber distribution cable; and
a terminal assembly, wherein the terminal assembly receives a plurality of optical fibers from the fiber distribution cable and distributes one or more individual fibers to one or more single fiber bare-fiber holders mounted to the terminal assembly that hold and protect each single fiber prepared and configured for splicing via a splicing element, wherein the splicing element includes an alignment mechanism having a base plate and a clamp plate, at least one of the base plate and clamp plate being formed from a silica material, and at least one of the base plate and clamp plate having an alignment groove configured to receive the first and second optical fibers in an end-to-end manner, and an optical adhesive disposed in at least a portion of the alignment groove, wherein the optical adhesive comprises an adhesive composition containing non-aggregated, surface-modified silica nano-particles dispersed in an epoxy resin.

21. An optical network, comprising:
a fiber distribution cable; and
a terminal assembly, wherein the terminal assembly receives a plurality of optical fibers from the fiber distribution cable and distributes one or more individual fibers to one or more single fiber bare-fiber holders mounted to the terminal assembly that hold and protect each single fiber prepared and configured for splicing via a splicing element, wherein the splicing element includes an alignment mechanism having a base plate and a clamp plate, at least one of the base plate and clamp plate being formed from a sol-based cast net shaped sintered silica material, and at least one of the base plate and clamp plate having an alignment groove configured to receive the first and second optical fibers in an end-to-end manner, and an optical adhesive disposed in at least a portion of the alignment groove, wherein the optical adhesive is curable via actinic radiation.

Assignees

• 3M Innovative Properties Co

Inventors

• Clatanoff William J
• Larson Donald K
• Treadwell Daniel J
• Allen William G
• Selli Raman K
• Borer Victor J
• Humpal Kathleen M
• Lackey Melissa A
• Kolb Brant U
• Pennington Paul D
• Hendrickson Mark J
• Thompson Wendy L
• Mahoney Wayne S

Classifications

• G02F2202/28

  Adhesive materials or arrangements · CPC title

• C04B26/14

  Polyepoxides · CPC title

• C09J11/04

  inorganic · CPC title

• G02B6/2555

  Alignment or adjustment devices for aligning prior to splicing · CPC title

• G02B6/255

  Splicing of light guides, e.g. by fusion or bonding · CPC title