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WO1994015232A1 - Connecteur optique - Google Patents

Connecteur optique Download PDF

Info

Publication number
WO1994015232A1
WO1994015232A1 PCT/GB1993/002655 GB9302655W WO9415232A1 WO 1994015232 A1 WO1994015232 A1 WO 1994015232A1 GB 9302655 W GB9302655 W GB 9302655W WO 9415232 A1 WO9415232 A1 WO 9415232A1
Authority
WO
WIPO (PCT)
Prior art keywords
plug
receptacle
ferrule
end portion
face
Prior art date
Application number
PCT/GB1993/002655
Other languages
English (en)
Inventor
Robert William Musk
Original Assignee
Bt&D Technologies Limited
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 Bt&D Technologies Limited filed Critical Bt&D Technologies Limited
Priority to AU58195/94A priority Critical patent/AU5819594A/en
Publication of WO1994015232A1 publication Critical patent/WO1994015232A1/fr

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
    • 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
    • G02B6/3826—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres characterised by form or shape
    • G02B6/3831—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres characterised by form or shape comprising a keying element on the plug or adapter, e.g. to forbid wrong connection
    • 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
    • G02B6/3812—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres having polarisation-maintaining light guides
    • 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
    • G02B6/3818—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres of a low-reflection-loss type
    • G02B6/3821—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres of a low-reflection-loss type with axial spring biasing or loading 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
    • G02B6/3869—Mounting ferrules to connector body, i.e. 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
    • G02B6/3818—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres of a low-reflection-loss type
    • G02B6/3822—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres of a low-reflection-loss type with beveled fibre 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
    • G02B6/3833—Details of mounting fibres in ferrules; Assembly methods; Manufacture
    • G02B6/3851—Ferrules having keying or coding means

Definitions

  • the present invention relates to optical connectors and, in particular to so-called physical contact (“PC”) connectors, that is optical connectors in which physical contact is made by the optical media which the connector connects.
  • PC connectors have been developed so as to achieve low connection loss and high return loss.
  • the gap between two fibre optic ferrules is made sufficiently small compared with the working wavelength by arranging for the two ferrules to make physical contact near where the connected optical media, usually optical fibres, make optical contact.
  • die ferrules for use in the PC connector have their forward ends finished by being polished into convex-spherical faces, and are so matched as to leave only a small gap, if any, between the convex-spherical faces of the two ferrules.
  • the standard PC connector has its ferrules rotated during assembly and so fails to maintain the relative optical position between those convex-spherical faces of the two ferrules. As a consequence, the connection loss often increases.
  • the angled PC connector includes a plug with a collar which has grooves formed in its outer peripheral surface, a receptacle that has rotation preventing projections engaging with the grooves of the collar, and a coil spring for urging the plug against the receptacle in an elastic fashion.
  • the object of the present invention to provide an optical connector which can solve the aforementioned problem inherent in the existing optical connectors. More specifically, it is an object of the present invention to provide an optical connector which can suppress the rotation of those fibre optic ferrules, without requiring particularly tight manufacturing tolerances between a plug and a receptacle, and achieve a decline in its connection loss.
  • an optical connector which connects the end face of a first fibre optic ferrule to the end face of a second fibre optic ferrule
  • the optical connector comprising: a plug having a collar section, into which the end face and adjoining portions of the first ferrule are inserted and a tubular section connected to the collar section and having a diameter smaller than that of the collar section, a hole being provided in the tubular section and collar section to guide the end face of the second ferrule to die end face of the first ferrule, wherein an engaging groove and rotation preventing grooves are provided in the outer peripheral surface of the collar section and extend along an axis of the first ferrule; a coil spring having first and second ends set in a direction substantially perpendicular to each other, the first end portion of the coil spring being engageable with the engaging groove of the collar section of the plug and the coil spring being loosely engageable around the tubular section of the plug; and a receptacle having one end portion holding the plug and the other end portion holding the second ferr
  • the force with which the plug is rotated is biased toward one direction only, thus urging the engagement of the projection of the receptacle with the rotation preventing groove of the collar.
  • Fig. 1 is an exploded, perspective view showing an optical connector according to an embodiment of the present invention
  • Fig.2 is a front view showing an inner structure of the receptacle
  • Fig. 3 is a view, showing a state in which a plug and receptacle of the optical connector of Fig. 1 are latched to each other
  • Fig.4 is a view showing a state in which, unlike the case of Fig. 3, no coil spring is used.
  • an optical connector which comprises a plug 2 into which an end face and neighbouring portions of a first fibre optic ferrule 4 is substantially coaxially inserted, a receptacle 6 associated with the plug 2, and a coil spring 8 provided between the plug and the receptacle.
  • the optical connector is comprised of an angled physical contact (“PC") connector. Those facing end faces (not shown) of first and second fibre optic ferules 4a and 4b are each finished, by polishing, into a convex-spherical configuration.
  • the plug 2 is made of, for example, stainless steel and comprises a collar section 2 and a mbular section 2b connected to the collar section.
  • a pair of rotation preventing grooves 10a, 10b and one engaging groove 12 are provided in the outer periphery of the collar section 2a along an axis of the plug 2.
  • the rotation preventing grooves 10a and 10b are so located as to provide a rotation symmetry relative to the axis of the plug 2.
  • a hole (not shown in Fig. 1) is formed in the collar section 2a and mbular section 2b along the axis of the plug 2. Through the hole, the end face of the second ferrule 4b is guided to the end face of the first ferrule 4a.
  • the receptacle 6 comprises a resin housing and has one end portion into which the plug 2 is fitted and the other end portion for holding a cable 14 with the second ferrule 4b contained therein.
  • the second ferrule 4b extends from one end of the receptacle 6 and is inserted into the aforementioned hole of the mbular section 2b.
  • one pair of rotation preventing projections or positioning keys 16a, 16b are provided on an inner surface between one end and the other end of the receptacle 6 to engage with the rotation preventing grooves 10a and 10b.
  • the receptacle 6 has a pair of opposite cut-outs 18a, 18b extending from its one end into its substantially middle portion.
  • One (18a) of these cut-outs merges into a minor cut-out 18c extending from the substantially middle portion toward that other end of the receptacle 6.
  • the minor cut-out 18c of the receptacle 6 and engaging groove 12 of the plug 2 are positionally shifted around the axis of the ferrule 4 by an angle of 90 * .
  • the coil spring 8 is loosely inserted around the mbular section 2b of the plug 2 and, together with the plug 2, inserted into the receptacle 6.
  • a positioning peg 8a is provided at one end and a positioning peg 8b at the other end of the spring 8.
  • the pegs 8a and 8b are positionally displaced at an angle of 90' relative to each other to have the same positional relationship as that between the minor cutout 18c and the engaging groove 12.
  • the pegs 8a and 8b extend in a direction perpendicular to each other.
  • the plug-side peg 8a extends along the engaging groove 12 of the plug 2 and the receptacle-side peg 8b extends from an inside toward an outside of the receptacle 6 so as to latchingly engage with the minor cutout 18c.
  • the rotation preventing grooves 10a and 10b of the plug 2 are latched to the rotation preventing projections 16a and 16b of the receptacle 6.
  • the pegs 8a and 8b are placed in latching engagement with the engaging groove 12 of the plug 2 and minor cutout 18c of the receptacle 6.
  • the key 16a of the receptacle 6 abuts against one wall face 20a defined in the groove 10a of the plug 2 and the key 16b of the receptacle 6 abuts against one wall surface 20b defined in the groove 10b of the plug 2.
  • Fig. 3 shows the aforementioned hole 22 for holding the second fibre optic ferrule 4b.
  • the ferrule 4a is positively prevented from being rotated because the rotation of the first ferrule 4a is biased to one direction only in which the latching engagement of the plug 2 is urged.
  • an optimal positional relation can be maintained between the facing convex-spherical faces of the first and second ferrules 4a and 4b.
  • the present invention is not restricted to the aforementioned embodiment only and various changes or modifications of the present invention can be made without departing from the spirit and scope of the present invention.
  • the angle at which the pegs 8a and 8b of the spring 8 are positioned is not restricted to 90 * only.
  • a proper acute or obtuse angle may be set within a range in which the proper engagement of the plug 2 and receptacle 6 are urged.
  • the plug and receptacle are urged by the coil spring into latching engagement with each other and it is thereby possible to prevent the ferrule from being rotated and hence to reduce connection losses.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mechanical Coupling Of Light Guides (AREA)

Abstract

L'invention se rapporte à un connecteur à contact physique qui empêche la rotation d'une fiche (2) par rapport à une prise (6) et permet de maintenir un rapport de position optimal entre les extrémités avant de deux ferrures de fibre optique. Le connecteur optique comprend, outre la fiche et la prise, un ressort à boudin (8) fixé entre ces deux éléments. La fiche est verrouillée à la prise selon une position de rotation prédéterminée. Le ressort (8) comprend une partie terminale (8a) s'étendant en une direction axiale de la fiche, l'autre partie terminale (8b) s'étendant en une direction perpendiculaire à cette extrémité. En raison du contact entre une partie terminale du ressort et une rainure de contact (12), et entre l'autre partie terminale du ressort et une découpe mineure (18c) de la prise, une force de rotation sollicitante du ressort n'agit que dans une direction sur la fiche de sorte que celle-ci est maintenue en une position de rotation prédéterminée par rapport à la prise.
PCT/GB1993/002655 1992-12-28 1993-12-23 Connecteur optique WO1994015232A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU58195/94A AU5819594A (en) 1992-12-28 1993-12-23 Opctical connector

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP4348295 1992-12-28
JP34829592A JPH06230244A (ja) 1992-12-28 1992-12-28 光コネクタ

Publications (1)

Publication Number Publication Date
WO1994015232A1 true WO1994015232A1 (fr) 1994-07-07

Family

ID=18396078

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1993/002655 WO1994015232A1 (fr) 1992-12-28 1993-12-23 Connecteur optique

Country Status (3)

Country Link
JP (1) JPH06230244A (fr)
AU (1) AU5819594A (fr)
WO (1) WO1994015232A1 (fr)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0961144A1 (fr) * 1998-05-29 1999-12-01 Siecor Operations, LLC Connecteur pour fibre optique ayant un positionneur à ressort
EP0967502A1 (fr) * 1998-06-23 1999-12-29 Yazaki Corporation Connecteur optique
EP0973051A1 (fr) * 1998-07-17 2000-01-19 Siecor Operations, LLC Goupille de retenue et procédé d'assemblage associé d'un connecteur à fibre optique
FR2832222A1 (fr) * 2001-11-15 2003-05-16 Radiall Sa Fiche optique et dispositif de connexion optique
WO2006098734A1 (fr) * 2005-03-10 2006-09-21 Corning Cable Systems Llc Ensemble prise et fiche de fibre optique multifibre
EP1783522A1 (fr) * 2005-11-03 2007-05-09 Ridgemount Technologies Limited Ensemble de connexion pour fibres optiques précontraint axialement
US7572065B2 (en) 2007-01-24 2009-08-11 Adc Telecommunications, Inc. Hardened fiber optic connector
US7591595B2 (en) 2007-01-24 2009-09-22 Adc Telelcommunications, Inc. Hardened fiber optic adapter
US7614797B2 (en) 2007-01-24 2009-11-10 Adc Telecommunications, Inc. Fiber optic connector mechanical interface converter
US7785019B2 (en) 2005-03-10 2010-08-31 Corning Cable Systems Llc Multi-fiber fiber optic receptacle and plug assembly
USRE42522E1 (en) 2003-09-08 2011-07-05 Adc Telecommunications, Inc. Ruggedized fiber optic connection
US9482829B2 (en) 2007-12-11 2016-11-01 Commscope Technologies Llc Hardened fiber optic connector compatible with hardened and non-hardened fiber optic adapters
US10444443B2 (en) 2013-06-27 2019-10-15 CommScope Connectivity Belgium BVBA Fiber optic cable anchoring device for use with fiber optic connectors and methods of using the same
TWI766543B (zh) * 2021-01-14 2022-06-01 立佳興業股份有限公司 光學連接器
EP4425229A1 (fr) * 2023-03-03 2024-09-04 Nestor Cables Oy Agencement optique et ensemble câble à fibres optiques

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101535218B1 (ko) * 2013-02-28 2015-07-09 주식회사 에이제이월드 융착형 광커넥터
CN105864251B (zh) * 2016-06-01 2017-12-08 宁波天辉机械有限公司 扩张式锚固装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0097575A1 (fr) * 1982-06-22 1984-01-04 Socapex Fiche pour connecteur de fibres optiques, et connecteur la comportant
US4595251A (en) * 1985-02-01 1986-06-17 Hughes Aircraft Company Coupling mechanism for connectors
EP0209759A2 (fr) * 1985-07-19 1987-01-28 Amphenol Corporation Connecteur pour fibres optiques
JPH02226205A (ja) * 1989-02-28 1990-09-07 Nec Corp 光コネクタ
FR2670910A1 (fr) * 1990-12-21 1992-06-26 Spinner Gmbh Elektrotech Fiche male pour guide d'ondes lumineuses, avec broche d'enfichage sollicitee elastiquement en direction axiale.

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0097575A1 (fr) * 1982-06-22 1984-01-04 Socapex Fiche pour connecteur de fibres optiques, et connecteur la comportant
US4595251A (en) * 1985-02-01 1986-06-17 Hughes Aircraft Company Coupling mechanism for connectors
EP0209759A2 (fr) * 1985-07-19 1987-01-28 Amphenol Corporation Connecteur pour fibres optiques
JPH02226205A (ja) * 1989-02-28 1990-09-07 Nec Corp 光コネクタ
FR2670910A1 (fr) * 1990-12-21 1992-06-26 Spinner Gmbh Elektrotech Fiche male pour guide d'ondes lumineuses, avec broche d'enfichage sollicitee elastiquement en direction axiale.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 14, no. 534 (P - 1135) 26 November 1990 (1990-11-26) *

Cited By (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0961144A1 (fr) * 1998-05-29 1999-12-01 Siecor Operations, LLC Connecteur pour fibre optique ayant un positionneur à ressort
EP0967502A1 (fr) * 1998-06-23 1999-12-29 Yazaki Corporation Connecteur optique
US6234682B1 (en) 1998-06-23 2001-05-22 Yazaki Corporation Optical connector
EP0973051A1 (fr) * 1998-07-17 2000-01-19 Siecor Operations, LLC Goupille de retenue et procédé d'assemblage associé d'un connecteur à fibre optique
FR2832222A1 (fr) * 2001-11-15 2003-05-16 Radiall Sa Fiche optique et dispositif de connexion optique
EP1312956A1 (fr) * 2001-11-15 2003-05-21 Radiall Fiche optique et dispositif de connexion optique
USRE42522E1 (en) 2003-09-08 2011-07-05 Adc Telecommunications, Inc. Ruggedized fiber optic connection
US8506173B2 (en) 2005-03-10 2013-08-13 Corning Cable Systems Llc Multi-fiber fiber optic receptacle and plug assembly
US7785019B2 (en) 2005-03-10 2010-08-31 Corning Cable Systems Llc Multi-fiber fiber optic receptacle and plug assembly
US7264402B2 (en) 2005-03-10 2007-09-04 Corning Cable Systems Llc Multi-fiber optic receptacle and plug assembly
WO2006098734A1 (fr) * 2005-03-10 2006-09-21 Corning Cable Systems Llc Ensemble prise et fiche de fibre optique multifibre
CN100578271C (zh) * 2005-03-10 2010-01-06 康宁光缆系统有限责任公司 多纤光纤插座和插头组件
US7654747B2 (en) 2005-03-10 2010-02-02 Corning Cable Systems Llc Multi-fiber fiber optic receptacle and plug assembly
EP1783522A1 (fr) * 2005-11-03 2007-05-09 Ridgemount Technologies Limited Ensemble de connexion pour fibres optiques précontraint axialement
US11409057B2 (en) 2007-01-24 2022-08-09 Commscope Technologies Llc Hardened fiber optic connector
US10877224B2 (en) 2007-01-24 2020-12-29 Commscope Technologies Llc Fiber optic adapter
US7591595B2 (en) 2007-01-24 2009-09-22 Adc Telelcommunications, Inc. Hardened fiber optic adapter
US12111502B2 (en) 2007-01-24 2024-10-08 Commscope Technologies Llc Hardened fiber optic connector
US9664862B2 (en) 2007-01-24 2017-05-30 Commscope Technologies Llc Hardened fiber optic connector
US7572065B2 (en) 2007-01-24 2009-08-11 Adc Telecommunications, Inc. Hardened fiber optic connector
US7614797B2 (en) 2007-01-24 2009-11-10 Adc Telecommunications, Inc. Fiber optic connector mechanical interface converter
US11275220B2 (en) 2007-12-11 2022-03-15 Commscope Technologies Llc Hardened fiber optic connector compatible with hardened and non-hardened fiber optic adapters
US10746939B2 (en) 2007-12-11 2020-08-18 Commscope Technologies Llc Hardened fiber optic connector compatible with hardened and non-hardened fiber optic adapters
US10101538B2 (en) 2007-12-11 2018-10-16 Commscope Technologies Llc Hardened fiber optic connector compatible with hardened and non-hardened fiber optic adapters
US11867950B2 (en) 2007-12-11 2024-01-09 Commscope Technologies Llc Hardened fiber optic connector compatible with hardened and non-hardened fiber optic adapters
US9482829B2 (en) 2007-12-11 2016-11-01 Commscope Technologies Llc Hardened fiber optic connector compatible with hardened and non-hardened fiber optic adapters
US12181718B2 (en) 2007-12-11 2024-12-31 Commscope Technologies Llc Hardened fiber optic connector compatible with hardened and non-hardened fiber optic adapters
US10444443B2 (en) 2013-06-27 2019-10-15 CommScope Connectivity Belgium BVBA Fiber optic cable anchoring device for use with fiber optic connectors and methods of using the same
US12117658B2 (en) 2013-06-27 2024-10-15 CommScope Connectivity Belgium BVBA Fiber optic cable anchoring device for use with fiber optic connectors and methods of using the same
TWI766543B (zh) * 2021-01-14 2022-06-01 立佳興業股份有限公司 光學連接器
US20220221654A1 (en) * 2021-01-14 2022-07-14 Chung-Ming Tseng Optical connector
US11906788B2 (en) * 2021-01-14 2024-02-20 Acsuper Technologies Inc. Optical connector
EP4425229A1 (fr) * 2023-03-03 2024-09-04 Nestor Cables Oy Agencement optique et ensemble câble à fibres optiques

Also Published As

Publication number Publication date
JPH06230244A (ja) 1994-08-19
AU5819594A (en) 1994-07-19

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