Fiber optic connector, fiber optic connector and cable assembly, and methods for manufacturing

Patent metadata

Field	Value
Publication number	US-2016363732-A1
Application number	US-201414463158-A
Country	US
Kind code	A1
Filing date	Aug 19, 2014
Priority date	Aug 19, 2013
Publication date	Dec 15, 2016
Grant date	—

Abstract

Some example methods of connectorizing an end of an optical cable include providing the ferrule assembly including a ferrule, a stub optical fiber extending rearwardly from the ferrule, and a flange disposed about the ferrule; splicing the stub optical fiber to an optical fiber of the optical cable at a splice location; and overmolding a rear hub portion (e.g., without any protective layers disposed between the rear hub portion and the stub optical fiber and optical fiber of the optical cable) using an adhesive material. The flange may include Nylon 6, 6. Splicing the fibers may include pulling the fibers away from each other during splicing without separating the fibers.

First claim

What is claimed is:

1 . A method of connectorizing an end of an optical cable, the method comprising:
providing the ferrule assembly including a ferrule, a stub optical fiber extending rearwardly from the ferrule, and a flange disposed about the ferrule, the flange including Nylon 6, 6; splicing the stub optical fiber to an optical fiber of the optical cable at a splice location; and overmolding a rear hub portion using an adhesive material that forms a chemical bond with the Nylon 6, 6 of the flange, the rear hub portion extending over the splice location and one end of the rear hub portion contacting at least a rearward surface of the flange.

2 . The method of claim 1 , wherein the rear hub portion is overmolded over the splice location without any protective layer between the rear hub portion and the spliced optical fibers.

3 . The method of claim 2 , wherein the adhesive material includes a filler that reduces a thermal expansion of the adhesive material.

4 . The method of claim 3 , wherein the filler includes silica.

5 . The method of claim 4 , wherein the filler includes glass.

6 . A method of connectorizing an end of an optical cable by splicing a stub optical fiber of a ferrule assembly to an optical fiber of the optical cable at a splice location, the method comprising:
providing the ferrule assembly including a ferrule, a stub optical fiber extending rearwardly from the ferrule, and a flange disposed about the ferrule; splicing the stub optical fiber to an optical fiber of the optical cable at a splice location; and overmolding a rear hub portion over the splice location without any protective layers disposed between the rear hub portion and the stub optical fiber and optical fiber of the optical cable, the rear hub portion cooperating with the flange to form a composite hub.

7 . The method of claim 6 , wherein the rear hub portion includes an adhesive material and a filler that reduces mismatches in thermal expansion between the stub optical fiber, the fiber of the optical cable, and the rear hub portion.

8 . The method of claim 7 , wherein the filler includes silica.

9 . The method of claim 7 , wherein the filler includes glass.

10 . The method of claim 7 , wherein the rear hub portion includes at least about 25% filler by volume.

11 . The method of claim 7 , wherein the rear hub portion includes about 30% filler by volume.

12 . The method of claim 7 , wherein the rear hub portion includes about 30%-70% filler by volume.

13 . The method of claim 7 , wherein the rear hub portion includes at least about 25% filler by weight.

14 . The method of claim 7 , wherein the rear hub portion includes at least about 30% filler by weight.

15 . The method of claim 7 , wherein the rear hub portion includes about 30%-70% filler by weight.

16 . The method of claim 6 , wherein the rear hub portion is overmolded so that one end of the rear hub portion contacts at least a rearward surface of the flange.

17 . The method of claim 6 , wherein overmolding a rear hub portion comprises:
positioning a shell at the flange and over the splice location; injecting overmold material into the shell so that the overmold material contacts the flange and the splice location; and allowing the overmold material to cure to form a composite hub with the shell and flange.

18 . A method of splicing a first optical fiber to a second optical fiber, the method comprising:
disposing the first and second optical fibers at respective first positions so that end faces of the first and second optical fibers are mostly aligned; initiating a fusion splice process on the first and second optical fibers; pulling the first and second optical fibers away from each other to respective second positions during before the fusion splice process completes, wherein the first and second optical fibers are not pulled so far as to separate from each other; and completing the fusion splice process while the first and second optical fibers are disposed in the second positions.

19 . The method of claim 18 , wherein the first and second optical fibers are angled relative to each other.

20 . The method of claim 18 , wherein the first optical fiber includes a stub optical fiber and wherein the second optical fiber is surrounded by a cable jacket.

Assignees

• Adc Telecommunications Inc
• Tyco Electronics Corp

Inventors

• Zimmel Steven C
• Oar Michael Andrew
• Drapeau Richard J
• Braun Dennis Marvin
• Ott Michael James

Classifications

• G02B6/3869

  Mounting ferrules to connector body, i.e. plugs · CPC title

• G02B6/3865 Primary

  fabricated by using moulding techniques (shaping techniques of plastic materials in general B29C; producing plastic optical fiber connectors B29D11/0075) · CPC title

• G02B6/3846 Primary

  with fibre stubs · CPC title

• B29K2063/00

  Use of {EP, i.e.} epoxy resins {or derivatives thereof}, as moulding material · CPC title

• G02B6/2551

  using thermal methods, e.g. fusion welding by arc discharge, laser beam, plasma torch · CPC title