Optical fiber termination apparatus, entry sealing members and methods for using the same

• US 20060133759A1
• Filed: 12/21/2005
• Published: 06/22/2006
• Est. Priority Date: 12/22/2004
• Status: Active Grant

• Current Assignee: CommScope Technologies, LLC (CommScope Holding Company, Inc.)
• Original Assignee: Tyco Electronics Corporation (TE Connectivity Limited)
• Inventors: Carrico, William Alan, Mullaney, Julian, Thompson, Roy Keller
• Granted Patent: US 7,469,091 B2
• Time in Patent Office: Days
• US Class Current: 385/139
• CPC Class Codes: G02B 6/4472 Manifolds

Abstract

An optical fiber termination apparatus includes a body portion having an optical fiber outlet therein and a connector receiving portion extending from the body portion and having an outer wall defining an optical fiber connector receiving chamber and having an opening to the connector receiving chamber at an end thereof spaced from the body portion. An optical connector is positioned in the opening, wherein the opening is configured to receive the optical connector therein without rotating the optical connector relative to the connector receiving portion. A sealing member is positioned between the optical connector and the outer wall of the connector receiving portion to seal a gap therebetween. A cover is positioned on the optical connector and the connector receiving portion that retains the optical connector in the opening and compresses the sealing member between the outer wall of the connector receiving portion and the optical connector without rotating the optical connector relative to the connector receiving portion.

Claims

1. An optical fiber termination apparatus, comprising:

a body portion having an optical fiber outlet therein;

a connector receiving portion extending from the body portion and having an outer wall defining an optical fiber connector receiving chamber and having an opening to the connector receiving chamber at an end thereof spaced from the body portion;

an optical connector positioned in the opening, wherein the opening is configured to receive the optical connector therein without rotating the optical connector relative to the connector receiving portion;

a sealing member positioned between the optical connector and the outer wall of the connector receiving portion to seal a gap therebetween; and

a cover positioned on the optical connector and the connector receiving portion that retains the optical connector in the opening and compresses the sealing member between the outer wall of the connector receiving portion and the optical connector without rotating the optical connector relative to the connector receiving portion.

2. The apparatus of claim 1, wherein the cover is slidably positioned over the connector receiving opening and wherein an outer surface of the connector receiving portion is configured to receive and retain the cover without rotating the optical connector relative to the connector receiving portion.

3. The apparatus of claim 2, further comprising:

a retainer tab on the outer surface of the connector receiving portion; and

a retainer tab receiving opening on the cover positioned to receive and retain the retainer tab when the cover is positioned over the optical connector at a position that compresses the sealing member.

4. The apparatus of claim 2, wherein the cover is coupled to the connector receiving portion so as to limit rotational movement of the cover relative to the connector receiving portion and to limit rotational movement of the optical connector relative to the connector receiving portion.

5. The apparatus of claim 4, wherein the connector receiving chamber has a size less than a minimum fiber bend radius requirement for an optical fiber.

6. The apparatus of claim 5, further comprising an optical fiber extending into the connector receiving chamber from the body portion and optically coupled to a backside connection member of the optical connector, wherein the optical fiber is free of loops in the connector receiving chamber.

7. The apparatus of claim 2, wherein the optical fiber termination apparatus comprises a plurality of connector receiving portions extending from the body portion, each of the connector receiving portions including an optical connector therein and a sealing member positioned between the respective optical connectors and outer walls of the respective connector receiving portions.

8. The apparatus of claim 7, wherein the body portion comprises a plurality of branch off sections, each of the branch of sections including a main passageway portion and a branch off passageway portion, the branch off sections being coupled together at ends of the main passageway portions to define a main passageway extending therethrough, and wherein one of the connector receiving portions is positioned at an end of each of the branch off passageway portions displaced from the main passageway with a branch off passageway of each passageway portion extending from the main passageway to the receiving chamber of its respective connector receiving portion to allow an optical fiber from the receiving chamber to extend through the branch off passageway to the main passageway.

9. The apparatus of claim 8, further comprising an overmolding layer over the branch off sections.

10. The apparatus of claim 8, wherein the branch off passageway portion further comprises an intersection portion extending from the main passageway portion and a tube portion extending from the intersection portion to the connector receiving portion.

11. The apparatus of claim 8, wherein a plurality of branch off passageway portions extend from each main passageway portion.

12. The apparatus of claim 8, further comprising a plug in an end of the main passageway of a last of the coupled together branch off sections that seals the main passageway.

13. The apparatus of claim 10, wherein each of the main passageway portions and their respective intersection portion are unitary molded members.

14. The apparatus of claim 2, wherein the body portion comprises:

a junction member having an inlet passageway therein coupled to a plurality of outlet passageways; and

a tubing section extending from each of the plurality of outlet passageways, one of the connector receiving portions being positioned on an end of each of the tubing sections displaced from the junction member, wherein the tubing sections couple the receiving chamber of the connector receiving portions to the respective outlet passageways.

15. The apparatus of claim 14, further comprising an overmolding layer over the junction member and an end of each of the tubing sections adjacent thereto.

16. The apparatus of claim 15, wherein the junction member comprises:

an upper part;

a lower part coupled to the upper part, wherein the upper and/or lower part define the inlet passageway and the plurality of outlet passageways; and

a plurality of connectors coupling the upper and lower parts.

17. The apparatus of claim 2, further comprising:

a splice container defining a splice chamber therein; and

an optical cable extending from the splice chamber to the body portion, the optical cable including an optical fiber extending to the receiving chamber and coupled to a backside of the optical connector, wherein the splice container includes a first opening configured to receive the optical cable extending from the splice chamber and a second opening configured to receive an optical fiber cable including an optical fiber to be spliced to the optical fiber extending to the receiving chamber.

18. The apparatus of claim 17, wherein the splice container further comprises an end portion having a first opening into the splice chamber configured to receive one of the optical fiber from the optical cable extending from the receiving chamber or the optical fiber to be spliced thereto and a second opening configured to receive a strength member associated with the one of the optical fiber from the optical cable extending from the receiving chamber or the optical fiber to be spliced thereto, the second opening being radially displaced from the first opening a distance selected to separate the strength member from the optical fiber to allow a sealant material to flow therebetween to environmentally seal an inside of the optical cable extending from the receiving chamber or the optical fiber cable including the optical fiber to be spliced thereto.

19. The apparatus of claim 2, further comprising a removable cap covering a front side optical receptacle of the optical connector.

20. The apparatus of claim 1, wherein the body portion comprises a longitudinally extending taut sheath splice closure having openings on longitudinally displayed ends thereof configured to receive an optical fiber cable extending through the body portion.

21. The apparatus of claim 1, wherein the body portion comprises a plurality of branch off sections, each of the branch off sections including a main passageway portion and a branch off passageway portion, the branch off sections being coupled together at ends of the main passageways.

22. An entry sealing member for an optical fiber cable, comprising:

a body portion configured to be sealingly received in an opening to a splice chamber;

a first longitudinally extending opening through the body portion configured to receive an optical fiber from the optical fiber cable; and

a second longitudinally extending opening through the body extending substantially in parallel with the first opening and configured to receive a strength member from the optical fiber cable, the second opening being radially displaced from the first opening a distance selected to separate the strength member from the optical fiber to allow a sealant material to flow therebetween to environmentally seal an inside of the optical fiber cable.

23. A taut sheath optical fiber termination apparatus, comprising:

a longitudinally extending taut sheath splice closure having a cross-sectional area selected to accommodate a taut sheath splice to selected ones of a plurality of optical fibers extending therethrough;

a first and second opening on longitudinally displayed ends of the splice closure configured to receive an optical fiber cable extending through the splice closure, the optical fiber cable including the plurality of optical fibers; and

a plurality of connector receiving portions extending from the splice closure, each of the connector receiving portions being configured to receive an optical connector therein;

an optical connector positioned in each of the connector receiving portions.

24. The apparatus of claim 23, further comprising:

a sealing member positioned between the optical connector and the connector receiving portion to seal a gap therebetween; and

a cover positioned over the optical connector and the connector receiving portion that retains the optical connector in the connector receiving portion and compresses the sealing member between the connector receiving portion and the optical connector without rotating the optical connector relative to the connector receiving portion.

25. The apparatus of claim 23, wherein the connector receiving portions each have an optical fiber connector receiving chamber and an opening to the connector receiving chamber at an end thereof displaced from the splice closure, the opening being configured to receive the optical connector therein, and wherein the optical connectors are positioned in openings.

26. A method of inserting an optical connector in a connector receiving portion of a housing, comprising:

attaching an optical fiber in the connector receiving portion to a backside optical connection member of the optical connector;

inserting the optical connector with the optical fiber attached thereto in an optical fiber connector receiving chamber of the connector receiving portion through an opening thereto in an end of the connector receiving portion displaced from the housing, with a sealing member positioned between the optical connector and the connector receiving portion to seal a gap therebetween;

placing a cover on the optical connector and the connector receiving portion to retain the optical connector in the opening and to compress the sealing member without rotating the optical connector relative to the connector receiving portion.