Fiber optic connector

Patent metadata

Field	Value
Publication number	US-10495822-B2
Application number	US-201816204672-A
Country	US
Kind code	B2
Filing date	Nov 29, 2018
Priority date	Mar 15, 2011
Publication date	Dec 3, 2019
Grant date	Dec 3, 2019

Abstract

A connector includes a ferrule assembly having a ferrule, a hub and a spring, the ferrule having a distal face accessible at a distal end of the connector housing, the ferrule being movable in a proximal direction relative to the connector housing. The distal and proximal positions are separated by an axial displacement distance. The ferrule proximal movement is against the spring's bias. The cable of the assembly includes an optical fiber contained within a jacket and also a strength layer between the fiber and the jacket that is anchored to the connector housing. The fiber extends through a fiber from the proximal end of the connector housing to the ferrule. The fiber has a distal portion potted within the ferrule. The fiber passage has a fiber take-up region configured to take-up an excess length of the fiber corresponding to the ferrule axial displacement.

First claim

The invention claimed is:

1. A fiber optic connector comprising:
a connector housing defining a distal end and a proximal end; and
a fiber passage extending between the distal end and the proximal end of the connector housing, wherein the fiber passage of the fiber optic connector has a fiber take-up region that is configured to take up an excess length of optical fiber within the fiber passage, the fiber take-up region defining a transverse cross-sectional area that is smaller than at least one of a distal section defining a distal transverse cross-sectional area and a proximal section defining a proximal transverse cross-sectional area, wherein the fiber passage further defines a transition portion between at least one of the distal section and the fiber take-up region and the proximal section and the fiber take-up region, the transition portion defining a gradual increase in transverse cross-sectional area as at least one of the distal and proximal sections transitions to the fiber take-up region so as to form a funnel-shaped passage at the transition portion.

2. The fiber optic connector of claim 1 , further including a ferrule assembly having a ferrule, a ferrule hub, and a ferrule spring, the ferrule spring biasing the ferrule in a distal direction relative to the connector housing.

3. The fiber optic connector of claim 1 , further comprising a fiber optic cable terminated to the connector, the fiber optic cable including an optical fiber contained within a cable jacket, the fiber optic cable also including a strength layer positioned between the optical fiber and the cable jacket, the strength layer being anchored to the connector housing, the optical fiber extending through the fiber passage of the fiber optic connector from the proximal end of the connector housing to the ferrule, the optical fiber having a distal portion secured within the ferrule.

4. The fiber optic connector of claim 1 , wherein the fiber take-up region defines an intermediate section positioned between the distal section and the proximal section, the intermediate section defining an intermediate transverse cross-sectional area, wherein the distal transverse cross-sectional area and the proximal transverse cross-sectional area are each smaller than the intermediate transverse cross-sectional area.

5. The fiber optic connector of claim 4 , wherein the distal transverse cross-sectional area is defined at a location that is proximally offset from the distal end of the connector housing.

6. The fiber optic connector of claim 1 , wherein the connector housing is defined by a distal housing portion that removably connects to a proximal housing portion, the distal housing portion defining the distal end of the connector housing and the proximal housing portion defining the proximal end of the connector housing.

7. The fiber optic connector of claim 1 , wherein the fiber optic connector is an SC style connector that includes a release sleeve that slidably mounts over the connector housing.

8. The fiber optic connector of claim 1 , wherein the fiber optic connector is an LC style connector that includes a flexible latch extending at an acute angle from a top wall of the connector housing in a direction from the distal end toward the proximal end.

9. The fiber optic connector of claim 1 , wherein the fiber optic connector further comprises a strain relief boot coupled adjacent the proximal end of the connector housing.

10. The fiber optic connector of claim 1 , wherein at least a portion of the fiber take-up region defines an obround configuration.

11. The fiber optic connector of claim 10 , wherein the fiber take-up region transitions from an obround configuration to a circular configuration as the fiber passage extends from the proximal end of the connector housing toward the distal end of the connector housing.

12. The fiber optic connector of claim 4 , wherein the intermediate section has a cross-dimension that is at least two times as large as a cross-dimension of the distal section.

13. The fiber optic connector of claim 4 , wherein the intermediate section has a cross-dimension that is at least two times as large as a cross-dimension of the proximal section.

14. The fiber optic connector of claim 12 , wherein the intermediate section has a cross-dimension that is at least three times as large as a cross-dimension of the distal section.

15. The fiber optic connector of claim 13 , wherein the intermediate section has a cross-dimension that is at least three times as large as a cross-dimension of the proximal section.

16. The fiber optic connector of claim 4 , wherein the intermediate section has a cross-dimension that is at least two times as large as a cross-dimension of the proximal section and that is at least two times as large as a cross-dimension of the distal section.

17. The fiber optic connector of claim 3 , wherein the cable jacket has an outer diameter less than 1.5 millimeters.

18. The fiber optic connector of claim 17 , wherein the outer diameter of the cable jacket is less than or equal to 1.2 millimeters.

19. The fiber optic connector of claim 2 , wherein the ferrule is movable in a proximal direction relative to the connector housing from a distal position to a proximal position, the distal and proximal positions being separated by an axial displacement distance, the proximal movement of the ferrule being against the bias of the ferrule spring, wherein the axial displacement distance is at least 0.015 inches.

20. The fiber optic connector of claim 19 , wherein the axial displacement distance is at least 0.025 inches.

Assignees

• Commscope Technologies Llc

Inventors

• Nhep Ponharith

Classifications

• G02B6/387

  Connector plugs comprising two complementary members, e.g. shells, caps, covers, locked together · CPC title

• G02B6/381

  of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres · CPC title

• G02B6/3821

  with axial spring biasing or loading means (G02B6/3847 takes precedence) · CPC title

• G02B6/3825

  with an intermediate part, e.g. adapter, receptacle, linking two plugs · CPC title

• G02B6/3861

  Adhesive bonding (adhesives in general C09J) · CPC title