Short profile optical connector

• US 20100284656A1
• Filed: 09/11/2009
• Published: 11/11/2010
• Est. Priority Date: 05/07/2009
• Status: Abandoned Application

• Current Assignee: OFS Fitel LLC (Furukawa Electric Company Limited)
• Original Assignee: OFS Fitel LLC (Furukawa Electric Company Limited)
• Inventors: White, Willard C., Siereveld, John L., Morra, Michael A., Sandels, Gregory A.
• Application Number:
  US12/584,758
• Publication Number:
  US 20100284656A1
• Time in Patent Office: Days
• US Class Current: 385/78
• CPC Class Codes: G02B 6/3821 with axial spring biasing or loading means G02B6/3847 takes precedence
• CPC Class Codes: G02B 6/3829 Bent or angled connectors G02B6/3827 takes precedence
• CPC Class Codes: G02B 6/3849 using mechanical protective elements, e.g. caps, hoods, sealing membranes G02B6/3816 takes precedence; provisionally see H01R13/44
• CPC Class Codes: G02B 6/38875 Protection from bending or twisting
• CPC Class Codes: G02B 6/3893 Push-pull type, e.g. snap-in, push-on

Abstract

A connector that enables fiber optic cables to terminate at equipment in cabinets having little space available for cable routing, without over bending. The construction includes a connector housing, and a yoke including a collar joined to a rear end of the housing. A tubular cable bend limiter is fixed at one end to the collar and the limiter directs a cable containing one or more bend insensitive fibers through a bend of, e.g., 90 degrees, between the collar and the opposite end of the limiter with a fiber bend radius of less than one inch (25.4 mm). If the limiter creates a fiber bend radius of 0.300 inch (7.62 mm), the distance between the front of the connector and the cable after bending may be as little as 1.26 inches (32 mm), allowing the cable and connector to be routed and terminated in limited space without impairing performance.

Claims

1. An optical cable connector construction, comprising:

a connector housing having an axis, a front end and a rear end;

a yoke including a collar joined to the rear end of the connector housing and in axial alignment with the housing; and

a tubular cable bend limiter one end of which is fixed to the collar, wherein the bend limiter is dimensioned and formed to direct a cable containing at least one bend insensitive fiber through a determined bend between the collar and the opposite end of the bend limiter such that the fiber acquires a bend radius of less than one inch (25.4 mm).

2. An optical cable connector construction according to claim 1, wherein the bend limiter is formed to direct a cable through a 90 degree bend between the collar and the opposite end of the bend limiter.

3. An optical cable connector construction according to claim 2, wherein the bend limiter is configured to create a fiber bend radius between approximately 0.300 (7.62 mm) inch and approximately 0.600 inch (15.24 mm).

4. An optical cable connector construction according to claim 1, wherein the length of the connector between the front end of the connector housing and a rearmost end of the yoke is not more than about 1.188 inches (30.18 mm).

5. An optical cable connector construction according to claim 1, wherein,

(a) the connector housing has an associated lock/release latch arm for locking or releasing the connector to or from a mating connector when the latch arm is depressed;

and

(b) the yoke has a trigger portion that includes (i) a base flange that projects from the collar in cantilever fashion in a rearward direction away from the connector housing, and (ii) a finger that inclines upward from a rear end of the flange for contacting and depressing the latch arm on the connector housing.

6. An optical cable connector assembly, comprising:

a connector housing having an axis, a front end and a rear end;

a yoke including a collar joined to the rear end of the connector housing and in axial alignment with the housing;

a length of an optical cable containing at least one bend insensitive fiber;

a ferrule barrel supported to extend inside the connector housing in the axial direction, wherein the barrel has an axial through passage formed to retain the bend insensitive fiber in the passage and to present an end face of the fiber where the passage opens at a front tip of the barrel to allow the fiber to couple with another fiber in a mating connector;

a yoke including a collar joined to the rear end of the connector housing and in axial alignment with the housing; and

a tubular cable bend limiter one end of which is fixed to the collar, wherein the bend limiter is dimensioned and formed to direct the cable through a determined bend between the collar and the opposite end of the bend limiter so that the bend insensitive fiber contained in the cable acquires a bend radius of less than one inch (25.4 mm).

7. An optical cable connector assembly according to claim 6, wherein the bend limiter is formed to direct the cable through a 90 degree bend between the collar and the opposite end of the bend limiter.

8. An optical cable connector assembly according to claim 7, wherein the bend limiter is configured so that the bend insensitive fiber contained in the cable acquires a bend radius between approximately 0.300 (7.62 mm) inch and approximately 0.600 inch (15.24 mm).

9. An optical cable connector assembly according to claim 6, wherein the length of the connector between the front end of the connector housing and a rearmost end of the yoke is not more than about 1.188 inches (30.18 mm).

10. An optical cable connector assembly according to claim 6, wherein,

(a) the connector housing has an associated latch arm for locking or releasing the connector to or from a mating connector when the latch arm is depressed;

and

(b) the yoke has a trigger portion that includes (i) a base flange that projects from the collar in cantilever fashion in a rearward direction away from the connector housing, and (ii) a finger that inclines upward from a rear end of the flange for contacting and depressing the latch arm on the connector housing.

11. An optical cable connector construction, comprising:

a connector housing having an axis, a front end and a rear end;

a yoke including a collar joined to the rear end of the connector housing and in axial alignment with the housing; and

a tubular retention member constructed and arranged for retaining strength members of a cable to be terminated by the connector, wherein corresponding portions of the retention member extend inside the collar of the yoke and inside a rear portion of the housing for joining the yoke and the housing in axial alignment with one another;

a ferrule-barrel at least a portion of which is supported inside the retention member in the axial direction of the connector housing, wherein the barrel has an axial through passage formed to retain a cable fiber in the passage and to present an end face of the fiber where the passage opens at a front tip of the ferrule-barrel to allow the fiber to couple with another fiber in a mating connector; and

a tubular cable bend limiter one end of which is fixed to the collar, wherein the bend limiter is dimensioned and formed to direct a cable containing at least one bend insensitive fiber through a determined bend between the collar and the opposite end of the bend limiter such that the fiber acquires a bend radius of less than one inch (25.4 mm).

12. An optical cable connector construction according to claim 11, wherein the bend limiter is formed to direct the cable through a 90 degree bend between the collar and the opposite end of the bend limiter.

13. An optical cable connector construction according to claim 12, wherein the bend limiter is configured to create a fiber bend radius between approximately 0.300 (7.62 mm) inch and approximately 0.600 inch (15.24 mm).

14. An optical cable connector construction according to claim 11, wherein the length of the connector between the front end of the connector housing and a rearmost end of the yoke is not more than about 1.188 inches (30.18 mm).

15. An optical cable connector construction according to claim 11, wherein,

(a) the connector housing has an associated latch arm for locking or releasing the connector to or from a mating adapter when the latch arm is depressed;

and

(b) the yoke has a trigger portion that includes (i) a base flange that projects from the collar in cantilever fashion in a rearward direction away from the connector housing, and (ii) a finger that inclines upward from a rear end of the flange for contacting and depressing the latch arm on the connector housing.

16. An optical cable connector assembly, comprising:

a connector housing having an axis, a front end and a rear end;

a yoke including a collar joined to the rear end of the connector housing and in axial alignment with the housing;

a length of an optical cable containing at least one bend insensitive fiber, wherein the cable has associated strength members;

a tubular retention member constructed and arranged for retaining the strength members of the cable, wherein corresponding portions of the retention member extend inside the collar of the yoke and inside a rear portion of the housing for joining the yoke and the housing in axial alignment with one another;

a ferrule-barrel at least a portion of which is supported inside the retention member in the axial direction of the connector housing, wherein the barrel has an axial through passage formed to retain the bend insensitive fiber in the passage and to present an end face of the fiber where the passage opens at a front tip of the ferrule barrel to allow the fiber to couple with another fiber in a mating connector; and

a tubular cable bend limiter one end of which is fixed to the collar, wherein the bend limiter is dimensioned and formed to direct the cable through a determined bend between the collar and the opposite end of the bend limiter so that the bend insensitive fiber contained in the cable acquires a bend radius of less than one inch (25.4 mm).

17. An optical cable connector assembly according to claim 16, wherein the bend limiter is formed to direct the cable through a 90 degree bend between the collar and the opposite end of the bend limiter.

18. An optical cable connector assembly according to claim 17, wherein the bend limiter is configured to create a fiber bend radius between approximately 0.300 (7.62 mm) inch and approximately 0.600 inch (15.24 mm).

19. An optical cable connector assembly according to claim 16, wherein the length of the connector between the front end of the connector housing and a rearmost end of the yoke is not more than about 1.188 inches (30.18 mm).

20. An optical cable connector assembly according to claim 16, wherein,

(a) the connector housing has an associated latch arm for locking or releasing the connector to or from a mating connector when the latch arm is depressed;

and

(b) the yoke has a trigger portion that includes (i) a base flange that projects from the collar in cantilever fashion in a rearward direction away from the connector housing, and (ii) a finger that inclines upward from a rear end of the flange for contacting and depressing the latch arm on the connector housing.