WO2022234583A1 - Optical fiber connector - Google Patents

Optical fiber connector Download PDF

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Publication number
WO2022234583A1
WO2022234583A1 PCT/IL2022/050471 IL2022050471W WO2022234583A1 WO 2022234583 A1 WO2022234583 A1 WO 2022234583A1 IL 2022050471 W IL2022050471 W IL 2022050471W WO 2022234583 A1 WO2022234583 A1 WO 2022234583A1
Authority
WO
WIPO (PCT)
Prior art keywords
connector
optical fiber
gripping element
hollow
connectable
Prior art date
Application number
PCT/IL2022/050471
Other languages
French (fr)
Inventor
Yehuda Mor YOSEF
Original Assignee
Fibernet Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fibernet Ltd. filed Critical Fibernet Ltd.
Publication of WO2022234583A1 publication Critical patent/WO2022234583A1/en

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/36—Mechanical coupling means
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/36—Mechanical coupling means
    • G02B6/38—Mechanical coupling means having fibre to fibre mating means
    • G02B6/3807—Dismountable connectors, i.e. comprising plugs
    • G02B6/3833—Details of mounting fibres in ferrules; Assembly methods; Manufacture
    • G02B6/3834—Means for centering or aligning the light guide within the ferrule
    • G02B6/3835—Means for centering or aligning the light guide within the ferrule using discs, bushings or the like
    • G02B6/3837—Means for centering or aligning the light guide within the ferrule using discs, bushings or the like forwarding or threading methods of light guides into apertures of ferrule centering means
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/241—Light guide terminations
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/26—Optical coupling means
    • G02B6/262—Optical details of coupling light into, or out of, or between fibre ends, e.g. special fibre end shapes or associated optical elements
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/36—Mechanical coupling means
    • G02B6/38—Mechanical coupling means having fibre to fibre mating means
    • G02B6/3801—Permanent connections, i.e. wherein fibres are kept aligned by mechanical means
    • G02B6/3806—Semi-permanent connections, i.e. wherein the mechanical means keeping the fibres aligned allow for removal of the fibres
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/36—Mechanical coupling means
    • G02B6/38—Mechanical coupling means having fibre to fibre mating means
    • G02B6/3807—Dismountable connectors, i.e. comprising plugs
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/36—Mechanical coupling means
    • G02B6/38—Mechanical coupling means having fibre to fibre mating means
    • G02B6/3807—Dismountable connectors, i.e. comprising plugs
    • G02B6/381—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/36—Mechanical coupling means
    • G02B6/38—Mechanical coupling means having fibre to fibre mating means
    • G02B6/3807—Dismountable connectors, i.e. comprising plugs
    • G02B6/3873—Connectors using guide surfaces for aligning ferrule ends, e.g. tubes, sleeves, V-grooves, rods, pins, balls
    • G02B6/3874—Connectors using guide surfaces for aligning ferrule ends, e.g. tubes, sleeves, V-grooves, rods, pins, balls using tubes, sleeves to align ferrules
    • G02B6/3878—Connectors using guide surfaces for aligning ferrule ends, e.g. tubes, sleeves, V-grooves, rods, pins, balls using tubes, sleeves to align ferrules comprising a plurality of ferrules, branching and break-out means
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/36—Mechanical coupling means
    • G02B6/38—Mechanical coupling means having fibre to fibre mating means
    • G02B6/3807—Dismountable connectors, i.e. comprising plugs
    • G02B6/3897—Connectors fixed to housings, casing, frames or circuit boards
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/42—Coupling light guides with opto-electronic elements
    • G02B6/4292—Coupling light guides with opto-electronic elements the light guide being disconnectable from the opto-electronic element, e.g. mutually self aligning arrangements

Definitions

  • the present invention relates generally to optical fiber connectors. More specifically, the present invention relates to optical fibers connectors having dual-purpose connectable ends.
  • Optical fiber connectors are small devices located at the end of an optical fiber, for enabling quicker connection and disconnection to and from external devices.
  • the connectors mechanically couple and align the cores of fibers so light can pass.
  • Optimal connectors will lose very little light due to reflection or misalignment of the fibers.
  • optical fibers replace metallic fibers as the main communication line in both general and domestic applications
  • the end of the optical fiber is polished to a very high degree (e.g., ADS 0.05 microns). If threaded into a communication conduit having any one of the known types of connectors, the end will lose it’s optical properties and will require a new polishing, on-site.
  • the high degree of optical polishing in sites, such as, construction sites, is difficult to achieve and very expensive.
  • an optical fiber connector comprising: a hollow gripping element configured to grip an optical fiber threaded in the hollow gripping element; and at least one of: an end connector configured to connect the optical fiber to an external device; and an end pulling cap configured to be inserted and pulled inside a communication conduit.
  • the hollow gripping element may include a connectable portion configured to be connected to either one of: the end connector and the end pulling cap.
  • the hollow gripping element may include a gripping housing; a ferrule extender; a ferrule flange; a spring; and a connectable housing comprising the connectable portion.
  • the optical fiber connector may further include a tube; and a hollow cover.
  • end connector is one of: LC connector, SC connector, FC connector, ST connector, SMA connector, DMI connector, MU connector, E-2000 connector, D4 connector, Biconic connector, MPO connector and MTRJ connector.
  • the connectable portion may include at least one of: a thread, a clip, a recess, and a pin.
  • FIG. 1 is an illustration of an exploded view of an optical fiber connector according to some embodiments of the invention.
  • FIGs. 2A and 2B are an illustration of optical fiber connectors assembled with an end connector and an end pulling cap respectively, according to some embodiments of the invention.
  • the connector may include an end connector configured to connect the optical fiber to any known device or additional fiber.
  • the end connector can be any end connector known in the art, such as, LC connector, FC connector, E-2000 connector, etc.).
  • the end connector may be replaced with an end pulling cap configured to be inserted and pulled inside a conduit while maintaining and securing the highly polished surface at the fiber’s end.
  • a connector 20 may include a hollow gripping element 12 (illustrated also in Figs. 2A and 2B), configured to grip an optical fiber 15 threaded in hollow gripping element 12, and at least one of: an end connector 9 configured to connect the optical fiber to an external device; and an end pulling cap 7 configured to be inserted and pulled inside a communication conduit.
  • hollow gripping element 12 may include a connectable portion 14 configured to be connected to either one of: end connector 9 and end pulling cap 7.
  • hollow gripping element 12 may include: a gripping housing 2, a ferrule extender 3, a ferrule flange 4, a spring 6; and a connectable housing 1.
  • Gripping housing 2 may grip (e.g., fixedly hold) optical fiber 15.
  • Connectable housing 1 may include connectable portion 14.
  • connectable portion 14 may include at least one of: a thread, a clip, a recess, a pin, or any connecting part that is configured to be connected to and disconnected from either one of: end connector 9 and end pulling cap 7.
  • gripping housing 2, ferrule extender 3, ferrule flange 4, spring 6; and connectable housing 1 may be made from any suitable material, for example, various polymers and various alloys.
  • connector 20 may further include a tube 8 and a hollow cover 10.
  • end connector 9 may be or may include any suitable connector for connecting optical fiber to an external device or an additional optical fiber.
  • Some nonlimiting examples for end connector 9 may be or may include: LC connector (as illustrated), SC connector, FC connector, ST connector, SMA connector, DMI connector, MU connector, E-2000 connector, D4 connector, Biconic connector, MPO connector, MTRJ connector and the like.
  • end pulling cap 7 may be made from a rigid material such as, steel, and may be designed to hold a polished end of optical fiber 15 in a secured position inside pulling cap 7. Therefore, during the pulling of an optical fiber connected to connector 20 assembled with pulling cap 7 (e.g., inside a conduit), the polished end of optical fiber 15 will not engage with an internal portion of pulling cap 7.
  • pulling cap 7 may further include a pulling hole 13 (better illustrated in Fig. 2B) to be connected to a pulling cored to be pulled/threaded inside a communication conduit.
  • FIGs. 2A and 2B are an illustration of the assembled optical fiber of Fig. 1, according to some embodiments of the invention.
  • Connector 20, illustrated in Fig. 2 A is assembled with end connector 9 and connector 20, illustrated in Fig. 2B, is assembled with end pulling cap 7.

Abstract

An optical fiber connector is disclosed. The optical fiber connector comprising: a hollow gripping element configured to grip an optical fiber threaded in the hollow gripping element; and at least one of: an end connector configured to connect the optical fiber to an external device; and an end pulling cap configured to be inserted and pulled inside a conduit. The hollow gripping element may include a connectable portion configured to be connected to either one of: the end connector, or the end pulling cap.

Description

OPTICAL FIBER CONNECTOR
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application claims the benefit of priority of Israeli Patent Application No. 283017, titled "OPTICAL FIBER CONNECTOR", filed May 6, 2021, the contents of which are incorporated herein by reference in their entirety.
FIELD OF THE INVENTION
[0002] The present invention relates generally to optical fiber connectors. More specifically, the present invention relates to optical fibers connectors having dual-purpose connectable ends.
BACKGROUND OF THE INVENTION
[0003] Optical fiber connectors are small devices located at the end of an optical fiber, for enabling quicker connection and disconnection to and from external devices. The connectors mechanically couple and align the cores of fibers so light can pass. Optimal connectors will lose very little light due to reflection or misalignment of the fibers. There are about 100 different types of fiber optic connectors in the market.
[0004] As optical fibers replace metallic fibers as the main communication line in both general and domestic applications, it became necessary to insert (e.g., thread) optical fibers inside communication conduits such as tubes inserted into walls. Threading delicate items such as optical fibers in communication conduits is challenging. In order to maintain as few loses as possible, the end of the optical fiber is polished to a very high degree (e.g., ADS 0.05 microns). If threaded into a communication conduit having any one of the known types of connectors, the end will lose it’s optical properties and will require a new polishing, on-site. The high degree of optical polishing in sites, such as, construction sites, is difficult to achieve and very expensive.
[0005] Accordingly, there is a need for a simple solution that will enable threading optical fibers in communication conduits while maintaining and securing the highly polished surface at the fiber’s end. SUMMARY OF THE INVENTION
[0006] Some aspects of the invention may be directed to an optical fiber connector, comprising: a hollow gripping element configured to grip an optical fiber threaded in the hollow gripping element; and at least one of: an end connector configured to connect the optical fiber to an external device; and an end pulling cap configured to be inserted and pulled inside a communication conduit. In some embodiments, the hollow gripping element may include a connectable portion configured to be connected to either one of: the end connector and the end pulling cap.
[0007] In some embodiments, the hollow gripping element may include a gripping housing; a ferrule extender; a ferrule flange; a spring; and a connectable housing comprising the connectable portion. In some embodiments, the optical fiber connector may further include a tube; and a hollow cover.
[0008] In some embodiments, end connector is one of: LC connector, SC connector, FC connector, ST connector, SMA connector, DMI connector, MU connector, E-2000 connector, D4 connector, Biconic connector, MPO connector and MTRJ connector. In some embodiments, the connectable portion may include at least one of: a thread, a clip, a recess, and a pin.
BRIEF DESCRIPTION OF THE DRAWINGS
[0009] The subject matter regarded as the invention is particularly pointed out and distinctly claimed in the concluding portion of the specification. The invention, however, both as to organization and method of operation, together with objects, features, and advantages thereof, may best be understood by reference to the following detailed description when read with the accompanying drawings in which:
[0010] Fig. 1 is an illustration of an exploded view of an optical fiber connector according to some embodiments of the invention; and
[0011] Figs. 2A and 2B are an illustration of optical fiber connectors assembled with an end connector and an end pulling cap respectively, according to some embodiments of the invention.
[0012] It will be appreciated that for simplicity and clarity of illustration, elements shown in the figures have not necessarily been drawn to scale. For example, the dimensions of some of the elements may be exaggerated relative to other elements for clarity. Further, where considered appropriate, reference numerals may be repeated among the figures to indicate corresponding or analogous elements.
DETAILED DESCRIPTION OF THE PRESENT INVENTION
[0013] One skilled in the art will realize the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The foregoing embodiments are therefore to be considered in all respects illustrative rather than limiting of the invention described herein. Scope of the invention is thus indicated by the appended claims, rather than by the foregoing description, and all changes that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
[0014] Some aspects of the invention are directed to a connector for optical fibers having a dual purpose. In some embodiments, the connector may include an end connector configured to connect the optical fiber to any known device or additional fiber. The end connector can be any end connector known in the art, such as, LC connector, FC connector, E-2000 connector, etc.). In some embodiments, the end connector may be replaced with an end pulling cap configured to be inserted and pulled inside a conduit while maintaining and securing the highly polished surface at the fiber’s end.
[0015] Reference is now made to Fig. 1 which is an illustration of an exploded view of an optical fiber connector according to some embodiments of the invention. A connector 20 may include a hollow gripping element 12 (illustrated also in Figs. 2A and 2B), configured to grip an optical fiber 15 threaded in hollow gripping element 12, and at least one of: an end connector 9 configured to connect the optical fiber to an external device; and an end pulling cap 7 configured to be inserted and pulled inside a communication conduit. In some embodiments, hollow gripping element 12 may include a connectable portion 14 configured to be connected to either one of: end connector 9 and end pulling cap 7.
[0016] In some embodiments, hollow gripping element 12 may include: a gripping housing 2, a ferrule extender 3, a ferrule flange 4, a spring 6; and a connectable housing 1. Gripping housing 2, may grip (e.g., fixedly hold) optical fiber 15. Connectable housing 1 may include connectable portion 14. In some embodiments, connectable portion 14 may include at least one of: a thread, a clip, a recess, a pin, or any connecting part that is configured to be connected to and disconnected from either one of: end connector 9 and end pulling cap 7. In some embodiments, gripping housing 2, ferrule extender 3, ferrule flange 4, spring 6; and connectable housing 1 may be made from any suitable material, for example, various polymers and various alloys.
[0017] In some embodiments, connector 20 may further include a tube 8 and a hollow cover 10.
[0018] In some embodiments, end connector 9 may be or may include any suitable connector for connecting optical fiber to an external device or an additional optical fiber. Some nonlimiting examples for end connector 9 may be or may include: LC connector (as illustrated), SC connector, FC connector, ST connector, SMA connector, DMI connector, MU connector, E-2000 connector, D4 connector, Biconic connector, MPO connector, MTRJ connector and the like.
[0019] In some embodiments, end pulling cap 7 may be made from a rigid material such as, steel, and may be designed to hold a polished end of optical fiber 15 in a secured position inside pulling cap 7. Therefore, during the pulling of an optical fiber connected to connector 20 assembled with pulling cap 7 (e.g., inside a conduit), the polished end of optical fiber 15 will not engage with an internal portion of pulling cap 7. In some embodiments, pulling cap 7 may further include a pulling hole 13 (better illustrated in Fig. 2B) to be connected to a pulling cored to be pulled/threaded inside a communication conduit.
[0020] Reference is now made to Figs. 2A and 2B which are an illustration of the assembled optical fiber of Fig. 1, according to some embodiments of the invention. Connector 20, illustrated in Fig. 2 A, is assembled with end connector 9 and connector 20, illustrated in Fig. 2B, is assembled with end pulling cap 7.
[0021] While certain features of the invention have been illustrated and described herein, many modifications, substitutions, changes, and equivalents may occur to those skilled in the art. It is, therefore, to be understood that the appended claims are intended to cover all such modifications and changes as fall within the true spirit of the invention. [0022] Various embodiments have been presented. Each of these embodiments may of course include features from other embodiments presented, and embodiments not specifically described may include various features described herein.

Claims

1. An optical fiber connector, comprising: a hollow gripping element configured to grip an optical fiber threaded in the hollow gripping element; and at least one of: an end connector configured to connect the optical fiber to an external device; and an end pulling cap configured to be inserted and pulled inside a communication conduit, wherein the hollow gripping element comprises a connectable portion configured to be connected to either one of: the end connector, and the end pulling cap.
2. The optical fiber connector of claim 1, wherein the hollow gripping element comprises: a gripping housing; a ferrule extender; a ferrule flange; a spring; and a connectable housing comprising the connectable portion.
3. The optical fiber connector, of claim 1, further comprises: a tube; and a hollow cover.
4. The optical fiber connector of claims 1 or 2, wherein the end connector is one of: LC connector, SC connector, FC connector, ST connector, SMA connector, DMI connector, MU connector, E-2000 connector, D4 connector, Biconic connector, MPO connector, and MTRJ connector.
5. The optical fiber connector according to any one of the preceding claims, wherein the connectable portion comprises at least one of: a thread, a clip, a recess, and a pin.
PCT/IL2022/050471 2021-05-06 2022-05-04 Optical fiber connector WO2022234583A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IL283017 2021-05-06
IL283017A IL283017B2 (en) 2021-05-06 2021-05-06 Optical fiber connector

Publications (1)

Publication Number Publication Date
WO2022234583A1 true WO2022234583A1 (en) 2022-11-10

Family

ID=83932644

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IL2022/050471 WO2022234583A1 (en) 2021-05-06 2022-05-04 Optical fiber connector

Country Status (2)

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IL (1) IL283017B2 (en)
WO (1) WO2022234583A1 (en)

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US20080240658A1 (en) * 2005-10-05 2008-10-02 Tyco Electronics Uk Limited Optical Fibre Connection Device
US20120141075A1 (en) * 2009-06-08 2012-06-07 Ian James Griffiths Pre-connectorized optical fibre cable, and kit for the deployment thereof
US20130216188A1 (en) * 2012-02-20 2013-08-22 Ezontek Technologies Co., Ltd. Optical fiber connector and apparatus of facilitating to pull out optical fiber connector
US20140133808A1 (en) * 2012-11-14 2014-05-15 John P. Hill Optical fiber connector
US20180156988A1 (en) * 2016-12-05 2018-06-07 Senko Advanced Components, Inc. Narrow Width Adapters and Connectors with Modular Latching Arm
US20190079252A1 (en) * 2017-09-13 2019-03-14 Sanwa Denki Kogyo Co., Ltd. Tab for optical connector
US20190227237A1 (en) * 2018-01-22 2019-07-25 Solteam Opto, Inc. Multi-directional fiber optic connector
US20190235175A1 (en) * 2017-03-03 2019-08-01 Ezconn Corporation High-density fiber optic connector
US20200257059A1 (en) * 2019-02-08 2020-08-13 Clearfield, Inc. Protective cap for an optical fiber connector

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US8858542B2 (en) * 2007-08-03 2014-10-14 Ams Research Corporation Side-firing fiber delivery device with active cooling cap
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030031448A1 (en) * 2001-08-10 2003-02-13 Simmons Richard L. Optical manifold
US20080240658A1 (en) * 2005-10-05 2008-10-02 Tyco Electronics Uk Limited Optical Fibre Connection Device
US20120141075A1 (en) * 2009-06-08 2012-06-07 Ian James Griffiths Pre-connectorized optical fibre cable, and kit for the deployment thereof
US20130216188A1 (en) * 2012-02-20 2013-08-22 Ezontek Technologies Co., Ltd. Optical fiber connector and apparatus of facilitating to pull out optical fiber connector
US20140133808A1 (en) * 2012-11-14 2014-05-15 John P. Hill Optical fiber connector
US20180156988A1 (en) * 2016-12-05 2018-06-07 Senko Advanced Components, Inc. Narrow Width Adapters and Connectors with Modular Latching Arm
US20190235175A1 (en) * 2017-03-03 2019-08-01 Ezconn Corporation High-density fiber optic connector
US20190079252A1 (en) * 2017-09-13 2019-03-14 Sanwa Denki Kogyo Co., Ltd. Tab for optical connector
US20190227237A1 (en) * 2018-01-22 2019-07-25 Solteam Opto, Inc. Multi-directional fiber optic connector
US20200257059A1 (en) * 2019-02-08 2020-08-13 Clearfield, Inc. Protective cap for an optical fiber connector

Also Published As

Publication number Publication date
IL283017B1 (en) 2023-07-01
IL283017B2 (en) 2023-11-01
IL283017A (en) 2022-12-01

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