Methods for forming connectorized fiber optic cabling

• US 10,302,878 B2
• Filed: 07/02/2018
• Issued: 05/28/2019
• Est. Priority Date: 06/08/2005
• Status: Active Grant

• Current Assignee: Commscope Inc of North Carolina (CommScope Holding Company, Inc.)
• Original Assignee: Commscope Inc of North Carolina (CommScope Holding Company, Inc.)
• Inventors: Anderson, Timothy W., Case, Richard L.
• Primary Examiner(s): Lepisto, Ryan A
• Application Number:
  US16/025,112
• Publication Number:
  US 20190004257A1
• Time in Patent Office: 330 Days
• CPC Class Codes: G02B 6/3821 with axial spring biasing or loading means G02B6/3847 takes precedence
• CPC Class Codes: G02B 6/3834 Means for centering or aligning the light guide within the ferrule
• CPC Class Codes: G02B 6/3861 Adhesive bonding adhesives in general C09J
• CPC Class Codes: G02B 6/3882 using rods, pins or balls to align a pair of ferrule ends
• CPC Class Codes: G02B 6/3885 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 Class Codes: G02B 6/38875 Protection from bending or twisting
• CPC Class Codes: G02B 6/3888 Protection from over-extension or over-compression
• CPC Class Codes: G02B 6/3898 Tools, e.g. handheld; Tuning wrenches; Jigs used with connectors, e.g. for extracting, removing or inserting in a panel, for engaging or coupling connectors, for assembling or disassembling components within the connector, for applying clips to hold two connectors together or for crimping tools for cleaning, G02B6/3866; tools in general B25B

Abstract

A connectorized fiber optic cabling assembly includes a loose tube fiber optic cable and a connector assembly. The cable has a termination end and includes an optical fiber bundle including a plurality of optical fibers, at least one strength member, and a jacket surrounding the optical fiber bundle and the strength member. The connector assembly includes a rigid portion and defines a fiber passage. The connector assembly is mounted on the termination end of the cable such that the optical fiber bundle extends through at least a portion of the fiber passage. The plurality of optical fibers undergo a transition from a ribbonized configuration to a loose, non-ribbonized configuration in the rigid portion of the connector assembly.

Claims

1. A connectorized fiber optic cabling assembly comprising:

a fiber optic cable that includes;

a plurality of non-ribbonized optical fibers;

a plurality of strength yarns; and

a cable jacket that surrounds the a plurality of strength yarns and the plurality of optical fibers; and

a connector assembly mounted on a first end of the fiber optic cable, the connector assembly including;

a connector housing that defines a fiber passage and includes a front housing and a rear housing;

a multi-fiber ferrule mounted within the connector housing;

a spring mounted within the connector housing rearward of the ferrule; and

a strain relief boot extending rearwardly from the connector housing,

wherein the plurality of optical fibers extend through the strain relief boot, the fiber passage and the spring into the ferrule,

wherein the plurality of optical fibers are aligned in a row in the multi-fiber ferrule of the connector assembly, and

wherein the plurality of optical fibers have a loose configuration that extends through at least a portion of the rear housing of the connector housing and also extends through the strain relief boot.

2. The connectorized fiber optic cabling assembly of claim 1, wherein the plurality of non-ribbonized optical fibers comprises twelve optical fibers.

3. The connectorized fiber optic cabling assembly of claim 1, wherein the connector housing is a rigid connector housing.

4. The connectorized fiber optic cabling assembly of claim 1, wherein the cable jacket and the plurality of strength yarns are directly secured to the connector housing via a crimp ring.

5. The connectorized fiber optic cabling assembly of claim 4, wherein a front section of the strain relief boot comprises top and bottom retention ribs, and wherein the front section of the strain relief boot is secured to the rear housing of the connector housing via the top and bottom retention ribs, which engage a front edge of the crimp ring.

6. The connectorized fiber optic cabling assembly of claim 1, wherein a front section of the strain relief boot has a cross-sectional shape selected from the group consisting of rectangular and oval.

7. The connectorized fiber optic cabling assembly of claim 1, wherein the front housing of the connector housing comprises an inner part and an outer part that are relatively slidable.

8. The connectorized fiber optic cabling assembly of claim 1, further comprising a tubular ferrule boot between the spring and the ferrule.

9. The connectorized fiber optic cabling assembly of claim 1, wherein the ferrule has a plurality of side-by-side aligned fiber holes, and wherein each of the plurality of optical fibers extends through a respective one of the fiber holes.

10. The connectorized fiber optic cabling assembly of claim 9, further comprising an epoxy securing the plurality of optical fibers in the respective fiber holes.