GB2191873A - Fibre-optic light guide which is resistant to high temperatures in its end-face region - Google Patents

Fibre-optic light guide which is resistant to high temperatures in its end-face region Download PDF

Info

Publication number
GB2191873A
GB2191873A GB08713640A GB8713640A GB2191873A GB 2191873 A GB2191873 A GB 2191873A GB 08713640 A GB08713640 A GB 08713640A GB 8713640 A GB8713640 A GB 8713640A GB 2191873 A GB2191873 A GB 2191873A
Authority
GB
United Kingdom
Prior art keywords
tube portion
glass tube
optical fibres
bundle
resistant
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
GB08713640A
Other versions
GB8713640D0 (en
GB2191873B (en
Inventor
Gerhard Bernsee
Dr Emil Korber
Dr Wolfgang Siefert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Carl Zeiss AG
Original Assignee
Carl Zeiss AG
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 Carl Zeiss AG filed Critical Carl Zeiss AG
Publication of GB8713640D0 publication Critical patent/GB8713640D0/en
Publication of GB2191873A publication Critical patent/GB2191873A/en
Application granted granted Critical
Publication of GB2191873B publication Critical patent/GB2191873B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • G02B6/3833—Details of mounting fibres in ferrules; Assembly methods; Manufacture
    • G02B6/3854—Ferrules characterised by materials
    • 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
    • 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
    • G02B6/04—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings formed by bundles of fibres
    • G02B6/06—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings formed by bundles of fibres the relative position of the fibres being the same at both ends, e.g. for transporting images
    • 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
    • G02B6/2552—Splicing of light guides, e.g. by fusion or bonding reshaping or reforming of light guides for coupling using thermal heating, e.g. tapering, forming of a lens on light guide 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
    • G02B6/3855—Details of mounting fibres in ferrules; Assembly methods; Manufacture characterised by the method of anchoring or fixing the fibre within the ferrule
    • 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
    • G02B6/40—Mechanical coupling means having fibre bundle mating means
    • G02B6/403—Mechanical coupling means having fibre bundle mating means of the ferrule type, connecting a pair of ferrules
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)

Abstract

A fibre-optic light guide which is resistant to high temperatures in its end-face region, comprises one end of a bundle of optical fibres 1 and a glass tube portion 4 fused onto this end, the end face 5 being polished. The fibre-optic light guide is distinguished by the fact that both the glass tube portion 4 and the bundle of optical fibres 1 consist of glass that is resistant to high temperatures and the tube portion 4 is so shrunk onto the bundle of optical fibres 1 over a defined length that the gaps between the individual optical fibres 1, and/or between the optical fibres 1 and the tube portion 4 are at least partially filled by the material of the glass tube portion 4 and/or by the material of the optical fibre sleeves 6. <IMAGE>

Description

SPECIFICATION Fibre-optic light guide which is resistant to high temperatures in its end-face region, and process for its manufacture.
This invention relates to a fibre-optic light guide which is resistant to high temperatures in its end-face region, the end-face region comprising one end of a bundle of optical fibres and a glass tube portion fused onto this end and the end face being polished.
Fibre-optic light guides and probes are used in many areas of the technology relating to the transmission of optical measuring signals.
Temperature-resistant flexible fibre-optic light guides are used, for example, in pyrometers, in the processing of measuring signals in hightemperature chambers and in light transmission using high-power light sources. The use of flexible fibre-optic light guides has hitherto been restricted to temperatures of up to 300"C, since the preparation of the ends possible hitherto did not allow higher temperatures.
From GB-PS 15 56 046 and DE-OS 26 30 730, it is known to seal each end of a bundle of optical fibres into a sleeve using a meltable material. In this case, however, the sealing material serves only for centering and coupling light guide cables for opto-electronic transmission systems: no attempt has been made to adapt the light guide for use at high temperatures.
From DE-PS 32 47 500, it is known to render the light guides temperature-resistant by using appropriate materials. In this case the materials used are so selected that the entire system comprising sleeve, sealing material and optical fibres is under compressive strain over the entire range of temperatures in question.
This is achieved by so selecting the materials that they have a coefficient of linear expansion that decreases from outside inwards.
Owing to the temperature load, it is preferable to use those sleeve materials that are resistant to corrosion, such as, for example, high-alloy chrome-nickel steeis. As a result of the high thermal expansion of these steeis and the fusion between the mould and the sealing material, axial tensile stresses occur in the sealed system which may result in the formation of cracks, that is to say the destruction of the light guide.
It has also already been suggested that the ends of bundles of optical fibres be prepared by combining the optical fibres in a sleeve and gluing the individual fibres with a suitable ad hesive.
Depending on the preparation of the end of the light guide, it can be exposed to different maximum temperatures. The ends of bundles of optical fibres fixed by gluing can be ex posed to a maximum temperature of 150"C and those that have been prepared by fusing can be subjected to a maximum temperature of 300"C.
The problem of the invention is to develop a new fibre-optic light guide that is resistant to high temperatures in its end-face region, the end-face region comprising one end of a bundle of optical fibres and a glass tube portion fused onto this end, and the end face being polished.
The new light guide is to be formed in such a manner that it can be used at temperatures of up to 550"C.
In addition, a process for manufacturing this light guide is to be made available.
According to the invention,this problem is solved-by a light guide which is characterised in that both the glass tube portion and the bundle of optical fibres consist of glass that is resistant to high temperatures and the tube portion is so shrunk onto the bundle of optical fibres over a defined length that the gaps between the individual optical fibres and/or between the optical fibres and the tube portion are at least partially filled by the material of the glass tube portion and/or by the material of the optical fibre sleeves.
The process according to the invention is characterised in that a bundle of optical fibres that are resistant to high temperatures is arranged in a tube portion of glass that is resistant to high temperatures and this tube portion is shrunk onto the bundle over a defined length by heating and collapsing the tube, the temperature being so selected that the gaps between the individual optical fibres and/or the gaps between the optical fibres and the tube portion are at least partially filled by the material of the glass tube portion and/or by the material of the optical fibre sleeves, and subsequently the end face is polished.
Various, preferred embodiments of the invention are the subject of the subsidiary claims.
The shrinking of the glass tube portion onto the end-face region of the bundle of optical fibres can be carried out in various manners.
In the simplest case, the shrinking on takes places solely as a result of the surface tension operating during collapse.
It is also possible to bring about the shrinking of the glass tube portion onto the bundle of optical fibres by a pressure difference between the external wall of the glass tube portion and the internal wall of the glass tube portion, the pressure at the exterior of the glass tube portion being greater than in the interior of the glass tube portion; this cam be achieved, for example, by applying a vacuum to the interior of the glass tube portion.
The shrinking of the glass tube portion onto the bundle of optical fibres can be achieved also by exerting a mechanical pressure exter nally on the glass tube portion to be treated.
In order to bring about the heating of the glass tube portion and the optical fibres ar ranged therein that is necessary for the shrinking operation and the fusing of the optical fibres, the glass tube portion can be heated externally using a burner, for example an H2/02 burner, or using a furnace, for example a resistance-heated tubular furnace.
According to a further variant of the invention, the glass tube portion is heated by the effect of microwave irradiation.
For shrinking on while collapsing and fusing the optical fibres both to one another and to the glass tube portion, a temperature is required that lies within the softening range of the glass tube portion and the material of the fibre sleeve.
By suitably selecting this temperature and the duration of heating, it is possible to control whether the optical fibres in the end-face region fuse partially or completely.
The optical fibres used according to the invention consist of silica glass and/or doped silica glass and the glass tube portion shrunk onto these optical fibres consists likewise of silica glass and/or doped silica glass.
A further variant provides as materials for the optical fibres multi-component glasses that are resistant to high temperatures; in this case a multi-component glass is used also for the glass tube portion.
In the usual execution of the process according to the invention, the glass tube portion is shrunk onto one end of the bundle of optical fibres.
An economicaliy especially interesting variant of the present invention provides that the shrinking on of the glass tube portion occurs approximately in the middle between the two ends of the bundle of optical fibres. The shrunk on glass tube portion is then separated approximately at its centre at right-angles to the axis of the bundle, there being obtained two light guides according to the invention that are resistant to high temperatures in their end-face region.
Examples of embodiments of the invention are explained in detail below with reference to the drawings.
Figure 1 shows a longitudinal section through the light guide according to the invention adjacent the fixed end; Figure 2 shows a cross-section through the light guids according to the invention in the end-face region, a) before ths shrinking on of the tube portion b) after the shrinking on of the tubs portion with partial fusion, and c) after the shrinking on of the tube portion with complsts fusion.
Figurs 1 shows the end of the light guide according to the invention in the region of the fixed end; the individual optical fibres of the fibre bundle 1 in the shrunk-on tube portion 4 are fused to one another and to the tube portion 4 within the region 2. The end face 5 of the fixed optical fibre bundle 1 is polished. In the transition region 3, the optical fibres are no longer completely fixed.
Figure 2a shows a cross-section (diagrammatic) through the light guide according to the invention in the end-face region before shrinking on of the tube portion. The individual fibres, each comprising a fibre core 7 and a fibre sleeve 6, of the optical fibre bundle 1 are arranged inside the tube portion 4 and their fibre sleeves touch or are very close at their external surfaces in the longitudinal direction and the fibres lying on the outer circumference of the bundles face the internal wall of the glass tube portion 4. The gaps 8 are the cavities running longitudinally between the individual optical fibres and between the optical fibres and the glass tube portion.
Figure 2b shows a cross-section (diagrammatic) through the light guide according to the invention in the end-face region after shrinking on of the glass tube portion with partial fusing. During the partial fusing, the optical fibres are fused together at the fusing places 9 over the entire length of the glass tube portion, each fibre being fused to the next fibre and the fibres on the outer circumference of the bundle being fused also to the internal wall of the glass tube portion. The fusing places correspond approximately to the position at which, before fusing, the fibres touched or were closest.
Figure 2c shows a cross-section through the light guide according to the invention after shrinking on of the glass tube portion with complete fusing. As a result of complete fusing, the gaps 8 between the individual optical fibres and between the optical fibres and the glass tube portion before complete fusion are completely filled by the material of the optical fibre sleeve 6 and the glass tube portion 4.
As a result of the shrinking on operation and the complete fusion, the area of crosssection of the light guide according to the invention is reduced by approximately 15 % with respect to the area of cross-section of the arrangement shown in Figure 2a.

Claims (14)

1. Fibre-optic light guide which is resistant to high temperatures in its end-face region, the end-face region comprising one end of a bundle of optical fibres and a glass tube portion fused onto this end and the end face being polished, characterised in that both the glass tube portion and the bundle of optical fibres consist of glass that is resistant to high temperatures and the tube portion is so shrunk onto the bundle of optical fibres over a defined length that the gaps between the individual optical fibres and/or between the optical fibres and the tube portion are at least partially filled by the material of the glass tube portion and/or by the material of the optical fibre sleeves.
2. Process for the manufacture of a fibreoptic light guide which is resistant to high temperatures in its end-face region, the endface region comprising one end of a bundle of optical fibres and a glass tube portion fused onto this end and the end face being polished, characterised in that a bundle of optical fibres that are resistant to high temperatures is arranged in a tube portion of glass that is resistant to high temperatures and this tube portion is shrunk onto the bundle over a defined length by heating and collapsing the tube, the temperature being so selected that the gaps between the individual optical fibres and/or the gaps between the optical fibres and the tube portion are at least partially filled by the material of the glass tube portion and/or by the material of the optical fibre sleeves, and subsequently the end face is polished.
3. Process according to claim 2, characterised in that the optical fibres are partially fused both to one another and to the shrunk on glass tube portion in the end-face region.
4. Process according to claim 2 or 3, characterised in that the shrinking of the glass tube portion onto the bundle of optical fibres is carried out without the action of external pressure.
5. Process according to claim 2 or 3, characterised in that the shrinking of the glass tube portion onto the bundle of optical fibres is carried out by causing a pressure difference between the external wall of the glass tube portion and the internal wall of the glass tube portion, the pressure exerted on the external wall of the glass tube portion being greater than the pressure exerted on the internal wall of the glass tube portion.
6. Process according to claim 2, 3 or 5, characterised in that the shrinking of the glass tube portion onto the bundle of optical fibres is brought about by the action of an external mechanical pressure on the glass tube portion.
7. Process according to one of claims 2 to 6, characterised in that the heating of the glass tube portion is brought about by an external heating action.
8. Process according to one of claims 2 to 7, characterised in that the optical fibres and/or the glass tube portion consist of silica glass and/or doped silica glass.
9. Process according to one of claims 2 to 7, characterised in that the optical fibres and/or the glass tube portion consist of multicomponent glasses that are resistant to high temperatures.
10. Process according to one of claims 2 to 9, characterised in that the shrinking on of the glass tube portion is carried out starting at one end of the bundle of optical fibres.
11. Process according to one of claims 2 to 9, characterised in that the glass tube portion is shrunk on at a place between the two ends of the bundle of optical fibres, and the shrunk on glass tube portion is separated in the mid dle at right-angles to the axis of the bundle so that two fibre-optic light guides that are resistant to high temperatures in their end-face regions are formed.
12. A fibre-optic light guide as claimed in claim 1, substantially as hereinbefore described with reference to the accompanying drawings.
13. A process as claimed in claim 2, substantially as hereinbefore described with reference to the accompanying drawings.
14. A fibre-optic light guide when manufactured by a process as claimed in any one of claims 2 to 11 or claim 13.
GB8713640A 1986-06-18 1987-06-11 Fibre-optic light guide which is resistant to high temperatures in its end-face region, and process for its manufacture Expired - Lifetime GB2191873B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19863620368 DE3620368A1 (en) 1986-06-18 1986-06-18 FIBER OPTICAL LIGHT GUIDE, HIGH-TEMPERATURE-RESISTANT IN ITS FACE AREA, AND METHOD FOR THE PRODUCTION THEREOF

Publications (3)

Publication Number Publication Date
GB8713640D0 GB8713640D0 (en) 1987-07-15
GB2191873A true GB2191873A (en) 1987-12-23
GB2191873B GB2191873B (en) 1990-07-18

Family

ID=6303183

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8713640A Expired - Lifetime GB2191873B (en) 1986-06-18 1987-06-11 Fibre-optic light guide which is resistant to high temperatures in its end-face region, and process for its manufacture

Country Status (4)

Country Link
CH (1) CH673899A5 (en)
DE (1) DE3620368A1 (en)
FR (1) FR2600425B1 (en)
GB (1) GB2191873B (en)

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2600425A1 (en) * 1986-06-18 1987-12-24 Schott Glaswerke OPTICAL FIBER OPTIC LIGHT DRIVER AT HIGH TEMPERATURES IN ITS FRONT SURFACE AREA AND METHOD OF MANUFACTURING SAME
US5045100A (en) * 1989-05-30 1991-09-03 Keymed (Medical & Industrial Equipment) Ltd. Method of forming a fibre optic terminal assembly
EP0476596A1 (en) * 1990-09-18 1992-03-25 Kabushiki Kaisha Toshiba Light guide connector
EP0537886A1 (en) * 1991-10-18 1993-04-21 Sumita Optical Glass, Inc. A process for the production of an optical fiber bundle having heat resistance and vacuum resistance
EP0898184A2 (en) * 1997-08-20 1999-02-24 Hella KG Hueck & Co. Method for manufacturing a coupling device and a coupling device for optical fibers
WO1999021044A1 (en) * 1997-10-17 1999-04-29 Thomson-Csf Sextant Optical device for helmet visor comprising an anamorphosis with optical fibres
EP1380868A2 (en) * 2002-07-12 2004-01-14 CCS Inc. Optical fiber holder and optical fiber holding method
WO2004068204A1 (en) * 2003-01-17 2004-08-12 Hrl Laboratories, Llc Method and apparatus for coupling light
EP1607776A1 (en) * 2004-06-12 2005-12-21 Schott AG Method for making a termination of an optical fibre bundle, corresponding press tool and optical fibre bundle
US7274717B1 (en) 2004-07-15 2007-09-25 Hrl Laboratories, Llc Dark fiber laser array coupler
US7342947B1 (en) 2004-07-15 2008-03-11 Hrl Laboratories, Llc Dark fiber laser array coupler
WO2008068388A1 (en) * 2006-12-08 2008-06-12 Wallac Oy Fibre optic cable and method for producing the same
US7457326B2 (en) 2003-01-17 2008-11-25 Hrl Laboratories, Llc Method and apparatus for coherently combining multiple laser oscillators
US7460755B2 (en) 2003-01-17 2008-12-02 Hrl Laboratories, Llc Method and apparatus for combining laser light
US7492998B2 (en) * 2004-08-31 2009-02-17 Corning Incorporated Fiber bundles and methods of making fiber bundles
US7738751B1 (en) 2008-05-06 2010-06-15 Hrl Laboratories, Llc All-fiber laser coupler with high stability
WO2011116385A1 (en) * 2010-03-19 2011-09-22 Polymicro Technologies Optical element with mechanical alignment and method of making same using a capillary tube
CN101587208B (en) * 2008-05-23 2011-12-07 北京中视中科光电技术有限公司 Optical fiber head and manufacturing method thereof
CN105759358A (en) * 2016-01-22 2016-07-13 中国人民解放军国防科学技术大学 All-fiber high-brightness single-mode fiber beam combiner and making method

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1291352C (en) * 1986-07-29 1991-10-29 Atsushi Utsumi Optical fiber conductor and image scope using same
DE4011553C1 (en) * 1990-04-10 1991-04-18 Schott Glaswerke, 6500 Mainz, De Flexible fibre bundle esp. for transmission of laser radiation - comprises multimode single fibres comprising core, sheath and protective coating
DE19703515C1 (en) * 1997-01-31 1998-09-17 Mueller Walter Fibre optical light conductor and method of mfr. for illumination or image transfer
DE19732051C1 (en) * 1997-07-25 1998-05-07 Schott Glaswerke Fitting end sleeve to optic fibre cable
US6775446B2 (en) 2002-04-09 2004-08-10 Schott Glas Flexible optic fiber cable with centered, interference fit ferrules

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3681164A (en) * 1969-04-07 1972-08-01 Noma World Wide Inc High temperature termination for fiber optic bundle
GB1556046A (en) * 1975-07-09 1979-11-21 Elliott Bros Optical-fibre cables
GB1595163A (en) * 1977-01-18 1981-08-12 Souriau & Cie Processes for preparing a connector end on a firbre bundle optical cable and cables thus obtained

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2065915B (en) * 1979-11-29 1984-01-11 Secr Defence Optical cable connector
JPS5742006A (en) * 1980-08-27 1982-03-09 Fujitsu Ltd Production of optical fiber bundle for image transmission
GB2088653B (en) * 1980-10-01 1984-06-13 Smiths Industries Plc Braided cable seal
JPS5792303A (en) * 1980-11-28 1982-06-08 Nippon Telegr & Teleph Corp <Ntt> Manufacture of multicore fiber preform
JPS5872906A (en) * 1981-10-27 1983-05-02 Dainichi Nippon Cables Ltd Production for glass fiber bundle base material
DE3247500C2 (en) * 1982-12-22 1984-11-29 Schott Glaswerke, 6500 Mainz Temperature resistant fiber optic light guide
GB8327450D0 (en) * 1983-10-13 1983-11-16 Bicc Plc Optical fibre splicing
JPS60142302A (en) * 1983-12-29 1985-07-27 Dainichi Nippon Cables Ltd Manufacture of image guide
DE3620368A1 (en) * 1986-06-18 1987-12-23 Schott Glaswerke FIBER OPTICAL LIGHT GUIDE, HIGH-TEMPERATURE-RESISTANT IN ITS FACE AREA, AND METHOD FOR THE PRODUCTION THEREOF

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3681164A (en) * 1969-04-07 1972-08-01 Noma World Wide Inc High temperature termination for fiber optic bundle
GB1556046A (en) * 1975-07-09 1979-11-21 Elliott Bros Optical-fibre cables
GB1595163A (en) * 1977-01-18 1981-08-12 Souriau & Cie Processes for preparing a connector end on a firbre bundle optical cable and cables thus obtained

Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2600425A1 (en) * 1986-06-18 1987-12-24 Schott Glaswerke OPTICAL FIBER OPTIC LIGHT DRIVER AT HIGH TEMPERATURES IN ITS FRONT SURFACE AREA AND METHOD OF MANUFACTURING SAME
US5045100A (en) * 1989-05-30 1991-09-03 Keymed (Medical & Industrial Equipment) Ltd. Method of forming a fibre optic terminal assembly
EP0476596A1 (en) * 1990-09-18 1992-03-25 Kabushiki Kaisha Toshiba Light guide connector
US5297226A (en) * 1990-09-18 1994-03-22 Kabushiki Kaisha Toshiba Light guide connector
EP0537886A1 (en) * 1991-10-18 1993-04-21 Sumita Optical Glass, Inc. A process for the production of an optical fiber bundle having heat resistance and vacuum resistance
EP0898184A2 (en) * 1997-08-20 1999-02-24 Hella KG Hueck & Co. Method for manufacturing a coupling device and a coupling device for optical fibers
EP0898184A3 (en) * 1997-08-20 1999-04-21 Hella KG Hueck & Co. Method for manufacturing a coupling device and a coupling device for optical fibers
WO1999021044A1 (en) * 1997-10-17 1999-04-29 Thomson-Csf Sextant Optical device for helmet visor comprising an anamorphosis with optical fibres
EP1380868A3 (en) * 2002-07-12 2005-02-02 CCS Inc. Optical fiber holder and optical fiber holding method
US7050693B2 (en) 2002-07-12 2006-05-23 Ccs, Inc. Optical fiber holder and optical fiber holding method
EP1380868A2 (en) * 2002-07-12 2004-01-14 CCS Inc. Optical fiber holder and optical fiber holding method
WO2004068204A1 (en) * 2003-01-17 2004-08-12 Hrl Laboratories, Llc Method and apparatus for coupling light
US7460755B2 (en) 2003-01-17 2008-12-02 Hrl Laboratories, Llc Method and apparatus for combining laser light
US7599405B2 (en) 2003-01-17 2009-10-06 Hrl Laboratories, Llc Method and apparatus for coherently combining multiple laser oscillators
US7457326B2 (en) 2003-01-17 2008-11-25 Hrl Laboratories, Llc Method and apparatus for coherently combining multiple laser oscillators
EP1607776A1 (en) * 2004-06-12 2005-12-21 Schott AG Method for making a termination of an optical fibre bundle, corresponding press tool and optical fibre bundle
JP2005352495A (en) * 2004-06-12 2005-12-22 Schott Ag Device and method for manufacturing end of optical fiber bundle, improved optical fiber bundle to be manufactured by using same device and method
US7958753B2 (en) 2004-06-12 2011-06-14 Schott Ag Apparatus and method for producing an end of an optical fiber bundle and improved optical fiber bundle made with same
US7457499B2 (en) 2004-06-12 2008-11-25 Schott Ag Apparatus and method for producing an end of an optical fiber bundle and improved optical fiber bundle made with same
CN100437175C (en) * 2004-06-12 2008-11-26 肖特股份有限公司 Method for making a termination of an optical fibre bundle and corresponding press tool
US7274717B1 (en) 2004-07-15 2007-09-25 Hrl Laboratories, Llc Dark fiber laser array coupler
US7342947B1 (en) 2004-07-15 2008-03-11 Hrl Laboratories, Llc Dark fiber laser array coupler
US7492998B2 (en) * 2004-08-31 2009-02-17 Corning Incorporated Fiber bundles and methods of making fiber bundles
WO2008068388A1 (en) * 2006-12-08 2008-06-12 Wallac Oy Fibre optic cable and method for producing the same
US7729582B2 (en) 2006-12-08 2010-06-01 Wallac Oy Fibre optic cable and method for producing the same
US7738751B1 (en) 2008-05-06 2010-06-15 Hrl Laboratories, Llc All-fiber laser coupler with high stability
CN101587208B (en) * 2008-05-23 2011-12-07 北京中视中科光电技术有限公司 Optical fiber head and manufacturing method thereof
WO2011116385A1 (en) * 2010-03-19 2011-09-22 Polymicro Technologies Optical element with mechanical alignment and method of making same using a capillary tube
US9103983B2 (en) 2010-03-19 2015-08-11 Polymicro Technologies Optical element with mechanical alignment and method of making same
CN105759358A (en) * 2016-01-22 2016-07-13 中国人民解放军国防科学技术大学 All-fiber high-brightness single-mode fiber beam combiner and making method
CN105759358B (en) * 2016-01-22 2018-10-12 中国人民解放军国防科学技术大学 A kind of all -fiber high brightness single mode optical fiber bundling device and production method

Also Published As

Publication number Publication date
DE3620368C2 (en) 1990-07-26
GB8713640D0 (en) 1987-07-15
FR2600425B1 (en) 1991-08-23
GB2191873B (en) 1990-07-18
FR2600425A1 (en) 1987-12-24
CH673899A5 (en) 1990-04-12
DE3620368A1 (en) 1987-12-23

Similar Documents

Publication Publication Date Title
GB2191873A (en) Fibre-optic light guide which is resistant to high temperatures in its end-face region
CA2061693C (en) Optical-coupler reinforcing material and optical-coupler reinforcing method
EP0201121B1 (en) Method of manufacturing a passive fibre-optic component
EP0436182B1 (en) 1xN fiber optic coupler and method of making
US4195980A (en) Method of manufacturing a continuous optical preform
KR100315178B1 (en) Colorless fiber coupler
US4799949A (en) Method of making low loss fiber optic coupler
US5295210A (en) Optical waveguide fiber achromatic coupler
EP0730171B1 (en) Method and apparatus for making low reflectance optical fiber end termination
EP0628839B1 (en) Low loss coupler
JP3263711B2 (en) Passive optical component and manufacturing method thereof
EP0704725B1 (en) Low loss fiber optic coupler and method
EP0436112B1 (en) Method of making 1XN fiber optic coupler
US5594823A (en) Method of manufacturing a multi-fiber optical cross-coupler, and an optical cross-coupler obtained by performing the method
CA2238517A1 (en) Method of making fiber optic couplers
CA2048745C (en) Method for producing preform for polarization retaining optical fiber
IE911386A1 (en) Process for producing an optical coupler for polymer optical waveguides
JPS6114489B2 (en)
US5221307A (en) Method for producing preform for polarization retaining optical fiber
JPH07253518A (en) Production of star coupler and star coupler
JPS57186722A (en) Reinforcing method for optical fiber connection part
JPH0497920A (en) Production of polarization maintaining optical fiber preform
JPH0378712A (en) Structure for reinforcing fiber type coupler
JPS63189806A (en) Quartz image fiber
RU2000127732A (en) METHOD FOR PRODUCING OPTICAL FIBERS

Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PE20 Patent expired after termination of 20 years

Effective date: 20070610