Apparatus and method for splitting optical fibers

• US 6,466,725 B2
• Filed: 11/29/2000
• Issued: 10/15/2002
• Est. Priority Date: 11/29/2000
• Status: Expired due to Term

• Current Assignee: Corning Optical Communications LLC (Corning Incorporated)
• Original Assignee: Corning Cable Systems LLC (Corning Incorporated)
• Inventors: Canning, Michael W., Holderness, Christopher L., Battey, Jennifer A., Carlson, James M., Fontaine, Steve A.
• Primary Examiner(s): Ullah, Akm E.
• Assistant Examiner(s): Rahll, Jerry T.
• Application Number:
  US09/725,521
• Publication Number:
  US 20020064364A1
• Time in Patent Office: 685 Days
• Field of Search: 385/134-137, 385/147, 385/100
• US Class Current: 385/135
• CPC Class Codes: G02B 6/4473 Three-way systems
• CPC Class Codes: G02B 6/566 Devices for opening or removing the mantle

Abstract

An apparatus and method for splitting or otherwise separating and routing optical fibers are provided in which a splitter housing having first and second separable halves is mounted upon a plurality of optical fibers without having to cut all of the optical fibers. The splitter housing generally includes an inline portion and a branch portion. The inline portion defines an input port at one end for receiving a plurality of optical fibers and a primary output port at the opposed end through which at least one optical fiber exits. The branch portion extends outwardly from the inline portion at one end and defines a secondary output port at the opposed end. The branch portion is in communication with the inline portion such that at least one optical fiber that enters through the input port can be separated from the remainder of the optical fibers and routed through the branch portion.

Claims

1. An apparatus for splitting optical fibers comprising:

a splitter housing extending lengthwise between opposed first and second ends, the splitter housing defining an input port, proximate the first end, for receiving a plurality of optical fibers and primary and secondary output ports, proximate the opposed second end, through which the plurality of optical fibers exit the splitter housing;

arid

a separation element disposed within the splitter housing proximate the secondary output port, the separation element defining a plurality of channels therethrough, each channel defining a lateral cross-sectional area that increases in a direction toward the secondary output port;

wherein the splitter housing comprises first and second halves, each half of the splitter housing extending lengthwise between the opposed first and second ends, and defining at least a portion of the input port and at least one of the output ports;

wherein the first and second halves of the splitter housing are at least partially separable such that the splitter housing is capable of being mounted upon the plurality of optical fibers without having to cut all of the optical fibers.

2. An apparatus according to claim 1 wherein each half of the splitter housing defines at least a portion of both the primary output port and the secondary output port.

3. An apparatus according to claim 1 wherein the first and second halves comprise corresponding latches such that the first and second halves of the splitter housing can be secured together.

4. An apparatus according to claim 1 further comprising a plurality of transport tubes that are partially inserted into respective channels defined by the separation element.

5. An apparatus according to claim 1 further comprising an adapter element disposed within the splitter housing proximate the input port for facilitating mounting the splitter housing upon different types of fiber optic cables.

6. An apparatus according to claim 1 further comprising a fiber retainer within the splitter housing proximate the secondary output port for engaging at least some of the optical fibers that exit through the secondary output port to retain those optical fibers within the splitter housing while the first and second halves of the splitter housing are being closed.

7. An apparatus for splitting optical fibers comprising:

an inline portion defining an input port at one end for receiving a plurality of optical fibers and a primary output port at an opposed end through which at least one optical fiber exits, the input port and the primary output port being coaxial; and

a branch portion extending from the inline portion at one end to a secondary output port at an opposed end, the branch portion being in communication with the inline portion such that at least one optical fiber can be split from the plurality of optical fibers and routed through the branch portion, the branch portion defining an acute angle with respect to the inline portion proximate the primary output port; and

a separation element disposed within the splitter housing proximate the secondary output port, the separation element defining a plurality of channels therethrough, each channel defining a lateral cross-sectional area that increases in a direction toward the secondary output port.

8. An apparatus according to claim 7 wherein the inline portion and the branch portion extend in a lengthwise direction, and wherein the branch portion is smaller in lateral cross-sectional area than the inline portion.

9. An apparatus according to claim 7 wherein the branch portion comprises:

a first segment proximate the inline portion that extends outwardly from the inline portion and that defines the acute angle with respect to the inline portion proximate the primary output port; and

a second segment connected to the first segment and extending parallel to the inline portion.

10. An apparatus according to claim 7 wherein the branch portion defines an acute angle of between 20°

and 40°

with respect to the inline portion proximate the primary output port.

11. An apparatus according to claim 10 wherein the branch portion defines an acute angle of about 30°

with respect to the inline portion proximate the primary output port.

12. An apparatus according to claim 7 further comprising a plurality of transport tubes that are partially inserted into respective channels defined by the separation clement.

13. An apparatus according to claim 7 further comprising an adapter element disposed within the splitter housing proximate the input port for facilitating mounting of the splitter housing upon different types of fiber optic cables.

14. A method for splitting a plurality of optical fibers comprising:

providing a splitter housing extending lengthwise between opposed first and second ends and defining an input port proximate the first end and defining primary and secondary output ports proximate the second end;

providing a separation element disposed within the splitter housing proximate the secondary output port, the separation element defining a plurality of channels therethrough, each channel defining a lateral cross~sectional area that increases in a direction toward the secondary output port;

separating the splitter housing into first and second halves with each half of the splitter housing extending lengthwise between the opposed first and second ends;

routing a plurality of optical fibers through the separated splitter housing such that at least one optical fiber extends from the input port to the primary output port and such that at least one optical fiber extends from the input port to the secondary output port through one of the channels defined by the separation element; and

closing the first and second halves of the splitter housing to retain the plurality of optical fibers therein.

15. A method according to claim 14 wherein closing the first and second halves of the splitter housing comprises latching the first and second halves of the splitter housing together.

16. A method according to claim 14 wherein routing the plurality of optical fibers through the separated splitter housing further comprises directing the at least one optical fiber that extends from the input port to the secondary output port through a transport tube.

17. A method according to claim 14 further comprising disposing an adapter element within the splitter housing proximate the input port and securing at least a portion of a fiber optic cable that includes the plurality of optical fibers to the adapter element.

18. A method according to claim 14 wherein routing the plurality of optical fibers through the separated splitter housing comprises engaging at least some of the optical fibers that exit through the secondary output port to retain those optical fibers within the splitter housing while the first and second halves of the splitter housing are being closed.