WO1990001175A1 - Optical fiber permanent connector - Google Patents
Optical fiber permanent connector Download PDFInfo
- Publication number
- WO1990001175A1 WO1990001175A1 PCT/JP1989/000664 JP8900664W WO9001175A1 WO 1990001175 A1 WO1990001175 A1 WO 1990001175A1 JP 8900664 W JP8900664 W JP 8900664W WO 9001175 A1 WO9001175 A1 WO 9001175A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- optical fiber
- adhesive
- capillary
- diameter
- groove
- 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
- G02B6/255—Splicing of light guides, e.g. by fusion or bonding
- G02B6/2558—Reinforcement of splice joint
-
- 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
-
- 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
- G02B6/255—Splicing of light guides, e.g. by fusion or bonding
- G02B6/2555—Alignment or adjustment devices for aligning prior to splicing
Definitions
- the present invention relates to a structure of a permanent optical fiber connector, and more particularly, to a simple structure of an optical fiber permanent connector in consideration of using an ultraviolet curable adhesive.
- optical fiber permanent connectors using glass generally have a V-groove or an equivalent structure for alignment (such as alignment) of the optical fiber.
- the end of the optical fiber may escape to the space on the opposite side of the groove in the V-groove, and when this occurs, the connection loss increases.
- a conventional optical fiber permanent connector in which optical fibers are concentrically butt-connected by a glass sleeve ⁇ has a core having a thickness of about 10 m or 50 and an outer diameter concentrically surrounding the core.
- Non-uniform thickness in order to match optical fibers covered with a cladding of about 125 "m and covered with a coating of about 250 ⁇ m or about 900 m in outer diameter.
- Using a specially shaped single glass sleeve it is extremely difficult to produce a glass sleeve having such a shape because of its small diameter, and it is weak even in terms of strength, and tends to cause stress concentration due to uneven thickness. Since it did not have a reinforcing structure, it was impractical and unsuitable. Disclosure of the invention
- the present invention has been developed as a result of various studies and studies in view of the above-mentioned drawbacks of the conventional optical fiber permanent connector, and its purpose is to manufacture the optical fiber relatively easily and accurately.
- Optical fiber permanent that has sufficient strength and is capable of connecting optical fiber safely, quickly and with high accuracy even in explosion-proof areas and small work areas with simple and inexpensive tools. Provide a connector.
- the optical fiber permanent connector according to the present invention has a ⁇ ⁇ which is slightly larger than the outer diameter of the cladding of the optical fiber and is precisely manufactured, and has a tapered portion at the rain end of ⁇ ⁇ .
- It has a groove for removing adhesive with a depth of less than 1 to 2 in the center, and has a capillary made of UV-transmissive glass, and an inner diameter larger than the outer diameter of the capillary, and this inner diameter Ultraviolet light that forms a gap between the outer diameter of the capillary at the position of the adhesive drain groove and the above-mentioned inner diameter by eccentrically joining the capillary at the center of the capillary to the side opposite to the adhesive drain groove and forming the adhesive drain groove And a transparent protective glass tube.
- the permanent optical fiber connector of the present invention has an ultraviolet curable adhesive previously injected into a portion thereof and is entirely packaged with a light-shielding packaging material. Further, the present invention has an outer diameter slightly smaller than the inner diameter of the protective glass tube, and has a slightly larger diameter than the outer diameter of the coating portion of the optical fiber. The present invention is also applicable to a case in which an adapter tube made of ultraviolet transmitting glass for application to an optical fiber having a small outer diameter is combined.
- the inner diameter of the capillary is slightly larger than the outer diameter of the optical fiber cladding, it is precisely manufactured, so the optical fiber is inserted from both ends of the capillary and concentrically butted in the gap between the capillaries. Can be connected.
- a groove for removing adhesive is provided at the center of the capillary, and a gap is formed between the outer diameter of the capillary at the position where the groove is formed and the inner diameter of the protective glass tube.
- the depth of the groove for removing the adhesive at the center of the capillary is less than 12 of the inner diameter of the capillary, the end of the optical fiber that is connected near this groove is connected at least half a circumference. Over the inner surface of the capillary. Therefore, the connection surfaces of the optical fibers can be concentrically butted while keeping the surfaces parallel to each other. To further explain this point, at present, external Quartz glass optical fibers with a diameter of 125 u rn are the most widespread and are being standardized internationally.
- the groove for removing the adhesive is formed by forming a groove after the capillary is formed. If the groove has a depth of 1/2 or more of the diameter of the capillary, the optical fiber is formed at the position where the groove is formed. It is not possible to prevent escape to the outside of the groove, and the connection ends of the optical fibers will not be parallel, but will be refracted and inclined, or will collide with each other in a state where the centers of the optical axes are shifted from each other. However, as described above, this can be prevented by setting the depth of the groove to be less than 1 ⁇ 2 of the diameter of the capillary tube.
- the protective glass tube Since the protective glass tube is used without processing to cause stress concentration, it protects the capillary part without reducing the strength of the glass, and its inner diameter is made larger than the outer diameter of the capillary, and By being eccentrically joined to the opposite side of the groove, it is easy to form a clearance for the air and the adhesive to escape from the adhesive discharging groove at the center of the capillary tube.
- the protective glass tube and capillaries are made of UV-transparent glass, so that it can be easily and quickly connected by filling with UV-curable adhesive and irradiating with UV lamp from outside. Becomes
- the above adhesive is filled in a protective glass tube in advance and the whole is packed with a light-shielding wrapping material, when used on site, the packaging is removed immediately and the optical fiber connection work is performed. Can be bonded on site where the working environment is not good It is possible to prevent dust and foreign matter from entering the adhesive, which tends to occur when the agent is injected.
- An optical fiber with a small outer diameter of the coating can be similarly connected by using an adapter tube.
- FIG. 1 is a longitudinal sectional view showing an embodiment of an optical fiber permanent connector according to the present invention
- FIG. 2 is a sectional view taken along the line ⁇ - ⁇ in FIG. 1,
- FIG. 3 is a longitudinal sectional view showing an optical fiber connection work state
- FIG. 4 is a longitudinal sectional view showing another embodiment of the optical fiber permanent connector according to the present invention.
- (1) shows a capillary tube
- (2) shows a protective glass tube
- (3) and (4) show an optical fiber
- (5) shows an adapter tube.
- the capillary (1) has a slightly larger outside diameter than the cladding (3a) (4a) of the optical fiber (3) (4), for example, the outer diameter of the cladding.
- the protective glass tube (2) has a slightly larger size (several meters to several tens) than the outer shell of the capillary tube (1), and has a uniform wall thickness (required) due to the UV-transparent glass similar to the capillary tube (1). It has a wall thickness corresponding to the required strength, etc.) and is longer than the capillary (1), for example, about three times as large as the capillary (1).
- the tapered portions (2a) and (2b) are formed by chamfering.
- the capillary (1) is eccentrically joined to the center of the protective glass tube (2) at one end and joined to the gap (G) between the outer diameter of the capillary (1) and the outer diameter of the protective glass tube (2).
- the direction of the eccentricity is opposite to the position where the groove (lc) for removing the adhesive formed in the capillary (1) is formed, whereby the groove (lc) for removing the adhesive and the gap (G) are formed. ) Are communicated.
- connection between the capillary (1) and the protective glass tube (2) is made along the line contact portion of both tubes (1) and (2), and it is desirable to use an ultraviolet-permeable adhesive. However, other adhesives may be used.
- the basic structure of the optical fiber ⁇ '(3) (4) consists of an optical signal transmission path called a core and a cladding (3a) (4a) that concentrically surrounds the optical signal transmission path. Since the value is about 1% higher than that of the cladding (3a) (4a), the optical signal passing through the core does not escape to the outside through the cladding (3a) (4a). (4) Covering parts (3b) and (4b) are provided outside of (4a).
- the coating portions (3b) and (4b) of the optical fibers (3) and (4) are stripped off to a certain length, and the organic solvent is removed. Wipe the surfaces of the cladding (3a) and (4a) with a
- Fig. 4 shows the adapter tube (5) to cope with the case where the outer diameter of the S portion (3b) (4b) of the optical fiber (3) (4) is considerably smaller than the outer diameter of the capillary tube (1). It is designed to be attached and permanently connected.
- the adapter tube (5) has an outer diameter slightly smaller than the inner diameter of the protective glass tube (2), and has a slightly larger outer diameter than the outer diameter of the portions (3b) and (4b). It is made of the same glass material as the capillary (1) having the tabers (5a) and (5b) at both ends.
- a predetermined amount of adhesive (6) is injected into the protective glass tube (1) ⁇ , and the force for inserting the adapter tube (5) first, or It may be inserted simultaneously with the optical fins (3) and (4) inserted, and after the insertion, the adhesive (6) is cured by irradiating ultraviolet rays (UV).
- UV ultraviolet rays
- the adhesive (6) is previously injected into the protective glass tube (2), and the entire package is packed with light-shielding packaging material. Adhesive work of rivets (3) and (4) can be performed, and it is possible to prevent intrusion of dust and the like which are likely to be generated when the adhesive (6) is injected at a site where the working environment is not good.
- a portable ultraviolet lamp is used as a means of irradiating ultraviolet (UV).
- an optical fiber can be permanently and quickly connected in a short time using an ultraviolet-curable adhesive and an ultraviolet lamp.
- the protective glass tube is used without any processing that causes stress concentration, the strength of the glass is not reduced, and a gap is provided between the protective glass tube and the capillary tube.
- An adhesive escape path can be secured, the entry resistance of the optical fiber due to the action of bismuth can be reduced, and air can be prevented from remaining in the form of air bubbles.
- It is a simple and inexpensive tool such as a light source and an optical fiber connection end finishing tool and a bonding jig. With an insertion loss of about 0.2 dB, it can be used for explosion-proof areas, narrow work areas, emergency emergency connection, temporary connection, etc. It can correspond to the application.
- an optical fiber with a small outer diameter of the coating can be similarly connected by using an adapter tube.
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019900700529A KR900702384A (ko) | 1988-07-27 | 1989-06-30 | 광파이버(optical fibers) 영구 접속기 |
DE68913188T DE68913188T2 (de) | 1988-07-27 | 1989-06-30 | Festverbindung für optische fasern. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP63188663A JPH0237307A (ja) | 1988-07-27 | 1988-07-27 | 光ファイバ永久接続器 |
JP63/188663 | 1988-07-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1990001175A1 true WO1990001175A1 (en) | 1990-02-08 |
Family
ID=16227673
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1989/000664 WO1990001175A1 (en) | 1988-07-27 | 1989-06-30 | Optical fiber permanent connector |
Country Status (6)
Country | Link |
---|---|
US (1) | US5061034A (ja) |
EP (1) | EP0381766B1 (ja) |
JP (1) | JPH0237307A (ja) |
KR (1) | KR900702384A (ja) |
DE (1) | DE68913188T2 (ja) |
WO (1) | WO1990001175A1 (ja) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0455290A1 (de) * | 1990-04-27 | 1991-11-06 | Philips Patentverwaltung GmbH | Optisches Steckerelement und Verfahren zu seiner Herstellung |
US5734767A (en) * | 1996-07-11 | 1998-03-31 | Belt; Richard W. | Fiber optic coupler |
FR2762686A1 (fr) * | 1997-04-25 | 1998-10-30 | Samsung Electronics Co Ltd | Protection pour fibres optiques |
US6085001A (en) * | 1996-07-11 | 2000-07-04 | Belt; Richard W. | Fiber optic coupler |
DE102011105592A1 (de) | 2011-06-27 | 2012-12-27 | Sml Verwaltungs Gmbh | Auskleidungsschlauch zur Sanierung fluidführender Systeme |
DE102011105995A1 (de) | 2011-06-30 | 2013-01-03 | Sml Verwaltungs Gmbh | Photochemisch härtbare Auskleidungsschläuche zur Sanierung fluidführender Systeme |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03168605A (ja) * | 1989-11-28 | 1991-07-22 | Fujikura Ltd | 光ファイバ用接続具 |
DE4011815A1 (de) * | 1990-04-12 | 1991-10-17 | Lautenschlaeger Kg Karl | Metall-zarge fuer schubladen-waende |
US5170409A (en) * | 1991-05-09 | 1992-12-08 | Coherent, Inc. | Laser resonator assembly |
US5134470A (en) * | 1991-06-10 | 1992-07-28 | Hughes Aircraft Company | Optical fiber interconnections and method of forming same |
US5224189A (en) * | 1992-01-02 | 1993-06-29 | Litton Systems, Inc. | High pressure fiber optic splice and method of fabrication |
SE469296B (sv) * | 1992-01-13 | 1993-06-14 | Televerket | Foerfarande och anordning foer skarvning av optiska vaagledare |
JPH06201936A (ja) * | 1992-12-28 | 1994-07-22 | Matsushita Electric Ind Co Ltd | 光ファイバアレイ及びその製造方法 |
US5400426A (en) * | 1993-08-19 | 1995-03-21 | Siecor Corporation | Fiber optic mechanical splice having grooves for dissipating index matching material impurities |
US5469522A (en) * | 1993-12-02 | 1995-11-21 | Litecom, Inc. | Optical fiber splice interconnection and usage method |
US6485199B1 (en) | 2000-04-13 | 2002-11-26 | Amherst Holding Co. | Disposable optical fiber splice sleeve and method for applying same |
US6752537B2 (en) * | 2001-02-12 | 2004-06-22 | Polymicro Technologies, Llc | Connector ferrule and method of sealing |
JP3788967B2 (ja) * | 2002-09-27 | 2006-06-21 | 日本航空電子工業株式会社 | 光コネク夕 |
US7918612B1 (en) | 2007-05-29 | 2011-04-05 | Agiltron, Inc. | Method and apparatus for mechanically splicing optic fibers |
JP4835618B2 (ja) * | 2008-03-10 | 2011-12-14 | 日立電線株式会社 | 光コネクタ |
JP4968122B2 (ja) * | 2008-03-10 | 2012-07-04 | 日立電線株式会社 | 光コネクタ |
JP4968123B2 (ja) * | 2008-03-10 | 2012-07-04 | 日立電線株式会社 | 光コネクタ |
US7903912B2 (en) * | 2008-03-10 | 2011-03-08 | Hitachi Cable, Ltd. | Optical connector |
KR20140126393A (ko) * | 2012-02-20 | 2014-10-30 | 에이디씨 텔레커뮤니케이션스 인코포레이티드 | 광섬유 커넥터, 광섬유 커넥터 및 케이블 어셈블리, 및 제조 방법 |
JP6610228B2 (ja) * | 2015-12-10 | 2019-11-27 | 日本電気硝子株式会社 | ガラス管成形用スリーブ |
US10641960B1 (en) * | 2018-10-04 | 2020-05-05 | The United States Of America As Represented By The Secretary Of The Navy | Method and apparatus for assembling a fiber optic splice |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58109711U (ja) * | 1982-01-20 | 1983-07-26 | 日本電気株式会社 | 光フアイバ接続器 |
JPS60247204A (ja) * | 1984-05-22 | 1985-12-06 | Sumitomo Electric Ind Ltd | 光フアイバの接続部 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6026005B2 (ja) * | 1979-05-18 | 1985-06-21 | 松下電工株式会社 | 枠付外装板の製造方法 |
JPS5625708A (en) * | 1979-08-08 | 1981-03-12 | Toshiba Corp | Connecting method for optical fiber |
JPS5888615A (ja) * | 1981-11-24 | 1983-05-26 | Toshiba Corp | 冷却風量検出装置 |
US4832440A (en) * | 1982-09-01 | 1989-05-23 | Gte Products Corporation | Optical fiber connector |
US4746189A (en) * | 1983-02-08 | 1988-05-24 | Raychem Corporation | Optical fiber adhesive joint tube |
JPS6125109A (ja) * | 1984-07-13 | 1986-02-04 | Sumitomo Electric Ind Ltd | 光フアイバ接続用結合部材 |
US4784458A (en) * | 1985-12-16 | 1988-11-15 | Allied-Signal Inc. | Optically aligned splice for optical fibers |
JPS6327805A (ja) * | 1986-07-21 | 1988-02-05 | Sumitomo Electric Ind Ltd | 光フアイバの接続用部材及びそれを用いた接続方法 |
US4789217A (en) * | 1987-05-05 | 1988-12-06 | Tektronix, Inc. | Method of and apparatus for securing elongate members of generally cylindrical form in end-to-end relationship |
US4960316A (en) * | 1987-08-07 | 1990-10-02 | Corning Incorporated | Capillary splice |
US4919510A (en) * | 1989-05-04 | 1990-04-24 | Corning Incorporated | Optical fiber connector and method |
-
1988
- 1988-07-27 JP JP63188663A patent/JPH0237307A/ja active Pending
-
1989
- 1989-06-30 US US07/465,173 patent/US5061034A/en not_active Expired - Fee Related
- 1989-06-30 DE DE68913188T patent/DE68913188T2/de not_active Expired - Fee Related
- 1989-06-30 EP EP89907828A patent/EP0381766B1/en not_active Expired - Lifetime
- 1989-06-30 WO PCT/JP1989/000664 patent/WO1990001175A1/ja active IP Right Grant
- 1989-06-30 KR KR1019900700529A patent/KR900702384A/ko not_active IP Right Cessation
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58109711U (ja) * | 1982-01-20 | 1983-07-26 | 日本電気株式会社 | 光フアイバ接続器 |
JPS60247204A (ja) * | 1984-05-22 | 1985-12-06 | Sumitomo Electric Ind Ltd | 光フアイバの接続部 |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0455290A1 (de) * | 1990-04-27 | 1991-11-06 | Philips Patentverwaltung GmbH | Optisches Steckerelement und Verfahren zu seiner Herstellung |
US5734767A (en) * | 1996-07-11 | 1998-03-31 | Belt; Richard W. | Fiber optic coupler |
US6085001A (en) * | 1996-07-11 | 2000-07-04 | Belt; Richard W. | Fiber optic coupler |
US6167176A (en) * | 1996-07-11 | 2000-12-26 | Belt; Richard W. | Fiber optic coupler |
FR2762686A1 (fr) * | 1997-04-25 | 1998-10-30 | Samsung Electronics Co Ltd | Protection pour fibres optiques |
DE102011105592A1 (de) | 2011-06-27 | 2012-12-27 | Sml Verwaltungs Gmbh | Auskleidungsschlauch zur Sanierung fluidführender Systeme |
WO2013000556A2 (de) | 2011-06-27 | 2013-01-03 | Sml Verwaltungs Gmbh | Auskleidungsschlauch zur sanierung fluidführender systeme |
DE102011105995A1 (de) | 2011-06-30 | 2013-01-03 | Sml Verwaltungs Gmbh | Photochemisch härtbare Auskleidungsschläuche zur Sanierung fluidführender Systeme |
Also Published As
Publication number | Publication date |
---|---|
EP0381766A1 (en) | 1990-08-16 |
JPH0237307A (ja) | 1990-02-07 |
US5061034A (en) | 1991-10-29 |
DE68913188T2 (de) | 1994-06-30 |
KR900702384A (ko) | 1990-12-06 |
EP0381766B1 (en) | 1994-02-16 |
DE68913188D1 (de) | 1994-03-24 |
EP0381766A4 (en) | 1991-11-27 |
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