WO2012044741A1 - Transformable ferrule assemblies and fiber optic connectors - Google Patents
Transformable ferrule assemblies and fiber optic connectors Download PDFInfo
- Publication number
- WO2012044741A1 WO2012044741A1 PCT/US2011/053842 US2011053842W WO2012044741A1 WO 2012044741 A1 WO2012044741 A1 WO 2012044741A1 US 2011053842 W US2011053842 W US 2011053842W WO 2012044741 A1 WO2012044741 A1 WO 2012044741A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- ferrule
- guide pin
- assembly
- ferrule assembly
- pin keeper
- Prior art date
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
- G02B6/38—Mechanical coupling means having fibre to fibre mating 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
- G02B6/3873—Connectors using guide surfaces for aligning ferrule ends, e.g. tubes, sleeves, V-grooves, rods, pins, balls
- G02B6/3882—Connectors using guide surfaces for aligning ferrule ends, e.g. tubes, sleeves, V-grooves, rods, pins, balls using rods, pins or balls to align a pair of ferrule ends
-
- 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
- G02B6/3885—Multicore or multichannel optical connectors, i.e. one single ferrule containing more than one fibre, e.g. ribbon type
-
- 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
- G02B6/3869—Mounting ferrules to connector body, i.e. plugs
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49716—Converting
Definitions
- the disclosure is directed to ferrule assemblies and fiber optic connectors. Specifically, the disclosure is directed to ferrule assemblies and fiber optic connectors that are transformable from a female assembly to a male assembly and vice versa along with related cable assemblies.
- Fiber optic connectors are used for making a reconfigurable connection between optical fibers.
- Fiber optic connectors typically use a ferrule for securing a single optical fiber or multiple optical fibers within the connector.
- a ferrule for securing a single optical fiber or multiple optical fibers within the connector.
- certain multi-fiber fiber optic connectors such as MPO, MTP®, MTRJ, etc. use guide pins for precisely aligning the two mating ferrules so that the relatively small cores of the optical fibers align for transmitting optical signals across the ferrule interface with minimal losses.
- the multi-fiber ferrules are assembled by the manufacturer as either a female ferrule assembly or a male ferrule assembly so the craft connect the same.
- FIGS. 1-3 depicts a conventional guide pin keeper 1 having guide pins 3 attached and being installed onto a conventional female fiber optic connector 10.
- FIG. 1 shows the female conventional connector 10 partially disassembled so that conventional guide pin keeper 1 and attached guide pins 3 can be installed for transforming the conventional fiber optic connector 10 into a male connector.
- FIG. 1 shows the female conventional connector 10 partially disassembled so that conventional guide pin keeper 1 and attached guide pins 3 can be installed for transforming the conventional fiber optic connector 10 into a male connector.
- the conventional connector 10 and the guide pin 3/guide pin keeper 1 assembly requires the operator to forcibly compress the spring and install the guide pin assembly around the fibers from the rear of the ferrule while aligning the pins with the guide pin bores of the ferrule.
- the guide pin assembly has to have enough clearance at the rear to install the guide pin assembly.
- Embodiments disclosed in the detailed description include ferrule assemblies and fiber optic connectors that are easily transformable from a female configuration to a male configuration or vice-versa by the craft.
- the ferrule assemblies and/or fiber optic connectors use a guide pin keeper that is easily and quickly installed or removed from the ferrule assembly during manufacturing or post-manufacturing process by the craft.
- the guide pin keeper is installable and/or removable from the ferrule assembly in a direction generally perpendicular to the longitudinal axis of the ferrule assembly without having to disassemble the ferrule boot from the ferrule.
- the guide pin keeper allows installation of the guide pins from the front side of the ferrule.
- the guide pin keeper and/or guide pins can easily and quickly be installed or removed during the manufacturing process or in the field by the craft for transforming the ferrule assembly/connector. Moreover, there is little risk in damaging the connector during transformation such as when moves, adds, and/or changes are required to the fiber optic network.
- FIGS. 1-3 depict a conventional guide pin assembly being installed onto a female configured connector after the connector is assembled
- FIG. 4 is an exploded perspective view of a ferrule assembly and a guide pin keeper
- FIG. 5 is an assembled perspective view of the ferrule assembly of FIG. 4 prior to the guide pin keeper being slid onto the ferrule assembly in the direction of the arrow;
- FIG. 6 is a perspective view of the ferrule assembly of FIG. 4 after the guide pin keeper is installed;
- FIG. 7 is a perspective view of the guide pin keeper of FIGS. 4-6;
- FIG. 8 is a perspective view showing rotation of the guide pin keeper for releasing and/or securing the guide pins to the assembly.
- FIG. 9 is an exploded view of an explanatory fiber optic connector using the ferrule assembly and guide pin keeper of FIGS. 4-6.
- FIG. 4 is an exploded perspective view of a ferrule assembly (not numbered) that includes a ferrule boot 70 and a ferrule 80. Also shown is a guide pin keeper 100 that is installable and removable from the ferrule assembly for transforming the configuration of the ferrule assembly/connector. Ferrule 80 is multifiber ferrule for securing a plurality of optical fibers therein. Moreover, the ferrule assembly can form a portion of a fiber optic connector 200 such as shown in FIG. 9, which may be a portion of a cable assembly.
- Ferrule 80 has one or more guide pin bores 86 that extend from a front end 82 of ferrule 80 to a rear end 84 of ferrule 80 for receiving a suitably sized guide pin 90 (See FIGS. 4 and 9) in each respective guide pin bore 86.
- ferrule 80 has two guide pin bores 86 disposed on opposite sides of an opening at rear end 84 of ferrule 80.
- Guide pins 90 are used for precisely aligning mating ferrules so that cores of optical fibers secured in the respective mating ferrules can transmit light across the mating ferrule interface with relatively low-loss.
- both of the mating ferrules include guide pin bores, the guide pins are only attached to one of the mating ferrules and the other mating ferrule does not have guide pins attached thereto.
- one of the mating ferrule assemblies/connectors has a male configuration and the other mating ferrule assembly/connector has a female configuration and the guide pins align the mating ferrules.
- ferrule assemblies disclosed herein advantageously provide a quick, simple, and easy method for transforming the assembly from a female ferrule assembly to a male ferrule assembly and vice-versa without risking damage to the assembly during manufacturing or in the field by the craft.
- FIG. 5 is an assembled perspective view of the ferrule assembly of FIG. 4 showing the ferrule boot 70 attached to the ferrule 80 as done during manufacturing.
- the front end of the ferrule boot 70 is inserted into an opening at the rear end of ferrule 84 so a portion of the ferrule boot 70 extends into the ferrule 80, thereby forming the ferrule assembly.
- guide pin keeper 100 is installable and removable from the ferrule assembly in a direction generally perpendicular to a longitudinal axis A-A of the ferrule assembly without disassembling the ferrule boot 70 from the ferrule 80 as represented by the arrow.
- guide pin keeper 100 is capable of being installed onto or removed from the ferrule assembly by moving (i.e., translating) in the direction of the arrow. Additionally, the guide pin keeper 100 may also rotate during, or after, moving (i.e., translating) in the direction generally perpendicular to the longitudinal axis A-A for securing/releasing the guide pins as shown in FIG. 8. After the guide pin keeper 100 is installed onto the ferrule assembly, one or more guide pins 90 (See FIG.
- FIG. 6 is a perspective view showing the ferrule assembly after the guide pin keeper 100 is installed. As shown, guide pin keeper 100 has an opening 106 aligned with the guide pin bores 86 for receiving and securing the guide pins 90 when inserted from the front end 82 of ferrule 80.
- FIG. 7 is a perspective view showing the details of guide pin keeper 100.
- Guide pin keeper 100 includes an open side having a dimension D sized for being received about a portion of ferrule boot 70 as depicted in FIG. 6.
- Guide pin keeper 100 can have any suitable shape, size, and/or be formed from any suitable material.
- guide pin keeper 100 is shaped to fit snuggly about a portion of the ferrule boot 70.
- guide pin keeper can have a slight interference fit, friction fit or the like.
- guide pin keeper 100 has an end 101 that is chamfered and/or rounded so that the guide pin keeper 100 can be snapped over ferrule boot 70 in the direction of the arrow a vertical manner as illustrated by the arrow in FIG. 5.
- the guide pin keeper 100 can be easily attached, or removed, and guide pins 90 either installed, or removed, from the guide pin bores 86 at the front end 82 of ferrule 80, thereby transforming the ferrule assembly/connector from a female configuration to a male configuration or vice versa.
- the guide pin keeper 100 can rotate relative to the ferrule assembly in order to engage the same and/or release/secure the guide pins 90. If the guide pin keeper 100 is to rotate for engagement, an interference feature of the pin keeper is lengthened on one end 101.
- the guide pin keeper 100 is also rotated generally about longitudinal axis A-A for securing the same as depicted in FIG. 8. Consequently, the retention of the guide pin keeper 100 is improved when guide pins 90 are not immediately installed into the ferrule assembly and the guide pin keeper 100 is securely retained.
- FIG. 9 is an exploded view of an explanatory fiber optic connector 200 using the ferrule assembly and guide pin keeper of FIGS. 4-6.
- Fiber optic connector 200 includes ferrule boot 70, ferrule 80, guide pins 90, guide pin retainer 100, a cuff 110, a spring 120, a spring push 130, a crimp band 140, a boot 150, an outer housing assembly 160, and a dust cap 170.
- the ferrule assembly and guide pin retainer disclosed herein may be used with other fiber optic connectors having different components and/or assemblies for transforming the fiber optic connector as disclosed herein.
- ferrule assemblies and/or fiber optic connectors disclosed herein may be attached to a fiber optic cable and form a cable assembly such as shown in FIG. 1.
- Other suitable cables assemblies are also possible such as assemblies having furcated legs and a plurality of connectors on respective legs.
- the respective legs of the cable assemblies can have staggered leg lengths as desired to reduce the need for slack storage of used lengths.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Coupling Of Light Guides (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201180047025.1A CN103140785B (en) | 2010-10-01 | 2011-09-29 | Transformable ferrule assemblies and fiber optic connectors |
CA2810247A CA2810247A1 (en) | 2010-10-01 | 2011-09-29 | Transformable ferrule assemblies and fiber optic connectors |
AU2011308870A AU2011308870B2 (en) | 2010-10-01 | 2011-09-29 | Transformable ferrule assemblies and fiber optic connectors |
EP11770942.8A EP2622395A1 (en) | 2010-10-01 | 2011-09-29 | Transformable ferrule assemblies and fiber optic connectors |
US13/849,604 US20130216185A1 (en) | 2010-10-01 | 2013-03-25 | Transformable ferrule assemblies and fiber optic connectors |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US38895410P | 2010-10-01 | 2010-10-01 | |
US61/388,954 | 2010-10-01 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/849,604 Continuation US20130216185A1 (en) | 2010-10-01 | 2013-03-25 | Transformable ferrule assemblies and fiber optic connectors |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2012044741A1 true WO2012044741A1 (en) | 2012-04-05 |
Family
ID=45044686
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2011/053842 WO2012044741A1 (en) | 2010-10-01 | 2011-09-29 | Transformable ferrule assemblies and fiber optic connectors |
Country Status (6)
Country | Link |
---|---|
US (1) | US20130216185A1 (en) |
EP (1) | EP2622395A1 (en) |
CN (1) | CN103140785B (en) |
AU (1) | AU2011308870B2 (en) |
CA (1) | CA2810247A1 (en) |
WO (1) | WO2012044741A1 (en) |
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US11187859B2 (en) | 2017-06-28 | 2021-11-30 | Corning Research & Development Corporation | Fiber optic connectors and methods of making the same |
US11215768B2 (en) | 2017-06-28 | 2022-01-04 | Corning Research & Development Corporation | Fiber optic connectors and connectorization employing adhesive admitting adapters |
US11294133B2 (en) | 2019-07-31 | 2022-04-05 | Corning Research & Development Corporation | Fiber optic networks using multiports and cable assemblies with cable-to-connector orientation |
US11300746B2 (en) | 2017-06-28 | 2022-04-12 | Corning Research & Development Corporation | Fiber optic port module inserts, assemblies and methods of making the same |
US11487073B2 (en) | 2019-09-30 | 2022-11-01 | Corning Research & Development Corporation | Cable input devices having an integrated locking feature and assemblies using the cable input devices |
US11536921B2 (en) | 2020-02-11 | 2022-12-27 | Corning Research & Development Corporation | Fiber optic terminals having one or more loopback assemblies |
US11604320B2 (en) | 2020-09-30 | 2023-03-14 | Corning Research & Development Corporation | Connector assemblies for telecommunication enclosures |
US11650388B2 (en) | 2019-11-14 | 2023-05-16 | Corning Research & Development Corporation | Fiber optic networks having a self-supporting optical terminal and methods of installing the optical terminal |
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- 2011-09-29 EP EP11770942.8A patent/EP2622395A1/en not_active Withdrawn
- 2011-09-29 CA CA2810247A patent/CA2810247A1/en not_active Abandoned
- 2011-09-29 CN CN201180047025.1A patent/CN103140785B/en not_active Expired - Fee Related
- 2011-09-29 WO PCT/US2011/053842 patent/WO2012044741A1/en active Application Filing
- 2011-09-29 AU AU2011308870A patent/AU2011308870B2/en not_active Ceased
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2013
- 2013-03-25 US US13/849,604 patent/US20130216185A1/en not_active Abandoned
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Also Published As
Publication number | Publication date |
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CA2810247A1 (en) | 2012-04-05 |
EP2622395A1 (en) | 2013-08-07 |
CN103140785A (en) | 2013-06-05 |
AU2011308870B2 (en) | 2015-09-24 |
CN103140785B (en) | 2015-07-22 |
US20130216185A1 (en) | 2013-08-22 |
AU2011308870A1 (en) | 2013-03-21 |
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