CA1058876A - Method for making optical fiber - Google Patents
Method for making optical fiberInfo
- Publication number
- CA1058876A CA1058876A CA251,064A CA251064A CA1058876A CA 1058876 A CA1058876 A CA 1058876A CA 251064 A CA251064 A CA 251064A CA 1058876 A CA1058876 A CA 1058876A
- Authority
- CA
- Canada
- Prior art keywords
- oxide
- tube
- bar
- layer
- fact
- 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.)
- Expired
Links
- 238000000034 method Methods 0.000 title claims abstract description 26
- 239000013307 optical fiber Substances 0.000 title claims abstract description 10
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 36
- DLYUQMMRRRQYAE-UHFFFAOYSA-N tetraphosphorus decaoxide Chemical compound O1P(O2)(=O)OP3(=O)OP1(=O)OP2(=O)O3 DLYUQMMRRRQYAE-UHFFFAOYSA-N 0.000 claims abstract description 29
- JKWMSGQKBLHBQQ-UHFFFAOYSA-N diboron trioxide Chemical compound O=BOB=O JKWMSGQKBLHBQQ-UHFFFAOYSA-N 0.000 claims abstract description 27
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000011521 glass Substances 0.000 claims abstract description 22
- YBMRDBCBODYGJE-UHFFFAOYSA-N germanium oxide Inorganic materials O=[Ge]=O YBMRDBCBODYGJE-UHFFFAOYSA-N 0.000 claims abstract description 21
- 229910052810 boron oxide Inorganic materials 0.000 claims abstract description 18
- 239000011787 zinc oxide Substances 0.000 claims abstract description 18
- 239000000395 magnesium oxide Substances 0.000 claims abstract description 16
- GOLCXWYRSKYTSP-UHFFFAOYSA-N Arsenious Acid Chemical compound O1[As]2O[As]1O2 GOLCXWYRSKYTSP-UHFFFAOYSA-N 0.000 claims abstract description 15
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 15
- 150000001875 compounds Chemical class 0.000 claims abstract description 15
- LTPBRCUWZOMYOC-UHFFFAOYSA-N beryllium oxide Inorganic materials O=[Be] LTPBRCUWZOMYOC-UHFFFAOYSA-N 0.000 claims abstract description 14
- FUJCRWPEOMXPAD-UHFFFAOYSA-N lithium oxide Chemical compound [Li+].[Li+].[O-2] FUJCRWPEOMXPAD-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000010438 heat treatment Methods 0.000 claims abstract description 10
- FRWYFWZENXDZMU-UHFFFAOYSA-N 2-iodoquinoline Chemical compound C1=CC=CC2=NC(I)=CC=C21 FRWYFWZENXDZMU-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910000410 antimony oxide Inorganic materials 0.000 claims abstract description 9
- VTRUBDSFZJNXHI-UHFFFAOYSA-N oxoantimony Chemical compound [Sb]=O VTRUBDSFZJNXHI-UHFFFAOYSA-N 0.000 claims abstract description 9
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims abstract description 8
- IKWTVSLWAPBBKU-UHFFFAOYSA-N a1010_sial Chemical compound O=[As]O[As]=O IKWTVSLWAPBBKU-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910000413 arsenic oxide Inorganic materials 0.000 claims abstract description 7
- 229960002594 arsenic trioxide Drugs 0.000 claims abstract description 7
- 229910001947 lithium oxide Inorganic materials 0.000 claims abstract description 6
- PVADDRMAFCOOPC-UHFFFAOYSA-N oxogermanium Chemical compound [Ge]=O PVADDRMAFCOOPC-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910052593 corundum Inorganic materials 0.000 claims abstract 6
- XUCJHNOBJLKZNU-UHFFFAOYSA-M dilithium;hydroxide Chemical compound [Li+].[Li+].[OH-] XUCJHNOBJLKZNU-UHFFFAOYSA-M 0.000 claims abstract 6
- 229910001845 yogo sapphire Inorganic materials 0.000 claims abstract 6
- GHPGOEFPKIHBNM-UHFFFAOYSA-N antimony(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Sb+3].[Sb+3] GHPGOEFPKIHBNM-UHFFFAOYSA-N 0.000 claims abstract 5
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims abstract 2
- 229910052796 boron Inorganic materials 0.000 claims abstract 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 16
- 239000000835 fiber Substances 0.000 claims description 7
- 239000000377 silicon dioxide Substances 0.000 claims description 7
- 235000012239 silicon dioxide Nutrition 0.000 claims description 6
- 238000005245 sintering Methods 0.000 claims description 5
- ADCOVFLJGNWWNZ-UHFFFAOYSA-N antimony trioxide Inorganic materials O=[Sb]O[Sb]=O ADCOVFLJGNWWNZ-UHFFFAOYSA-N 0.000 claims description 4
- 239000004033 plastic Substances 0.000 claims description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 3
- 229910052744 lithium Inorganic materials 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- -1 polytetra-fluoroethylene Polymers 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims description 2
- 229910052732 germanium Inorganic materials 0.000 claims 2
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 claims 2
- 229910052785 arsenic Inorganic materials 0.000 claims 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 claims 1
- 229940058401 polytetrafluoroethylene Drugs 0.000 claims 1
- 239000004810 polytetrafluoroethylene Substances 0.000 claims 1
- YEAUATLBSVJFOY-UHFFFAOYSA-N tetraantimony hexaoxide Chemical compound O1[Sb](O2)O[Sb]3O[Sb]1O[Sb]2O3 YEAUATLBSVJFOY-UHFFFAOYSA-N 0.000 claims 1
- 230000008021 deposition Effects 0.000 abstract 2
- 239000000243 solution Substances 0.000 description 7
- 238000000926 separation method Methods 0.000 description 2
- WLNBMPZUVDTASE-HXIISURNSA-N (2r,3r,4s,5r)-2-amino-3,4,5,6-tetrahydroxyhexanal;sulfuric acid Chemical compound [O-]S([O-])(=O)=O.O=C[C@H]([NH3+])[C@@H](O)[C@H](O)[C@H](O)CO.O=C[C@H]([NH3+])[C@@H](O)[C@H](O)[C@H](O)CO WLNBMPZUVDTASE-HXIISURNSA-N 0.000 description 1
- ZYUGWIRQWCNRJP-YHEMGIGTSA-N 3alpha,7alpha,12alpha-Trihydroxy-5beta-cholan-24-al Chemical compound C([C@H]1C[C@H]2O)[C@H](O)CC[C@]1(C)[C@@H]1[C@@H]2[C@@H]2CC[C@H]([C@@H](CCC=O)C)[C@@]2(C)[C@@H](O)C1 ZYUGWIRQWCNRJP-YHEMGIGTSA-N 0.000 description 1
- 241000750690 Aptus Species 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 240000008042 Zea mays Species 0.000 description 1
- 235000016383 Zea mays subsp huehuetenangensis Nutrition 0.000 description 1
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 1
- 150000008064 anhydrides Chemical class 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 235000009973 maize Nutrition 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000012808 vapor phase Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C25/00—Surface treatment of fibres or filaments made from glass, minerals or slags
- C03C25/10—Coating
- C03C25/104—Coating to obtain optical fibres
- C03C25/1065—Multiple coatings
- C03C25/1068—Inorganic coatings
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/01—Manufacture of glass fibres or filaments
- C03B37/012—Manufacture of preforms for drawing fibres or filaments
- C03B37/014—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD]
- C03B37/016—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD] by a liquid phase reaction process, e.g. through a gel phase
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/22—Surface treatment of glass, not in the form of fibres or filaments, by coating with other inorganic material
- C03C17/23—Oxides
- C03C17/25—Oxides by deposition from the liquid phase
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C25/00—Surface treatment of fibres or filaments made from glass, minerals or slags
- C03C25/10—Coating
- C03C25/104—Coating to obtain optical fibres
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/02—Optical fibres with cladding with or without a coating
- G02B6/028—Optical fibres with cladding with or without a coating with core or cladding having graded refractive index
- G02B6/0286—Combination of graded index in the central core segment and a graded index layer external to the central core segment
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C2217/00—Coatings on glass
- C03C2217/20—Materials for coating a single layer on glass
- C03C2217/21—Oxides
- C03C2217/229—Non-specific enumeration
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C2218/00—Methods for coating glass
- C03C2218/10—Deposition methods
- C03C2218/11—Deposition methods from solutions or suspensions
- C03C2218/111—Deposition methods from solutions or suspensions by dipping, immersion
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Dispersion Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Optics & Photonics (AREA)
- General Physics & Mathematics (AREA)
- Inorganic Chemistry (AREA)
- Glass Compositions (AREA)
- Surface Treatment Of Glass Fibres Or Filaments (AREA)
- Manufacture, Treatment Of Glass Fibers (AREA)
Abstract
Procédé de réalisation d'une fibre optique consistant à effectuer sur un barreau constitué d'un premier verre un premier dépôt superficiel comprenant un oxyde, à effectuer sur un tube constitué d'un deuxième verre un second dépôt superficiel, à chauffer le barreau et le tube pour agglomérer les premier et second dépôts superficiels, à introduire le barreau dans le tube, à porter le tube entourant le barreau à une température suffisante pour obtenir le ramollissement des verres, et à étirer longitudinalement le barreau et le tube ramollis. Le procédé de l'invention est caractérisé par le fait que le premier dépôt superficiel est obtenu en recouvrant la surface du barreau d'une couche d'une première solution d'un premier composé choisi dans le groupe constitué par l'oxyde de bore B2O3, l'oxyde de germanium GeO2, l'alumine Al2O3, l'anhydride phosphorique P2O5, l'oxyde de lithium Li2O, l'oxyde de béryllium BeO, l'oxyde d'antimoine Sb2O3, l'oxyde d'arsenic As2O3, l'oxyde de zinc ZnO et l'oxyde de magnésium MgO, et que le second dépôt superficiel est obtenu en recouvrant la surface du tube d'une couche d'une deuxième solution d'un deuxième composé choisi dans le groupe constitué par l'oxyde de bore B2O3, l'oxyde de germanium GeO2, l'alumine Al2O3, l'anhydride phosphorique P2O5, l'oxyde de lithium Li2O, l'oxyde de béryllium BeO, l'oxyde d'antimoine Sb2O3, l'oxyde d'arsenic As2O3, l'oxyde de zinc ZnO et l'oxyde de magnésium MgO; le Chauffage est effectué de manière à fritter les couches et à les faire adhérer respectivement sur le barreau et le tube.Process for producing an optical fiber consisting in carrying out a first surface deposition comprising an oxide on a bar consisting of a first glass, in carrying out a second surface deposition on a tube consisting of a second glass, in heating the bar and the tube to agglomerate the first and second surface deposits, to introduce the bar into the tube, to bring the tube surrounding the bar to a temperature sufficient to obtain the softening of the glasses, and to stretch the bar and the softened tube longitudinally. The method of the invention is characterized in that the first surface deposit is obtained by covering the surface of the bar with a layer of a first solution of a first compound chosen from the group consisting of boron oxide B2O3 , germanium oxide GeO2, alumina Al2O3, phosphoric anhydride P2O5, lithium oxide Li2O, beryllium oxide BeO, antimony oxide Sb2O3, arsenic oxide As2O3, l zinc oxide ZnO and magnesium oxide MgO, and that the second surface deposit is obtained by covering the surface of the tube with a layer of a second solution of a second compound chosen from the group consisting of the oxide boron B2O3, germanium oxide GeO2, alumina Al2O3, phosphoric anhydride P2O5, lithium oxide Li2O, beryllium oxide BeO, antimony oxide Sb2O3, arsenic oxide As2O3, zinc oxide ZnO and magnesium oxide MgO; Heating is carried out so as to sinter the layers and to make them adhere respectively to the bar and the tube.
Description
lOS8876 La présente invention cancerne les procédés de réallsation d'une fibre optiqu~.
On sait qu'une $1bre optique est un fil de verre dont la partie axlale ou coewr a un indice de réfraction n1 différent de celul de la gaine périphérique d'indice n2. En général, n1 est supérieur à
n2 de sorte qu'une onde lumineuse peut être transmise par le coeur de la fibre par réflexions successives sur la surface de séparation entre le coeur et la gaine.
Un procédé connu dB réalisation d'une fibre optique consiste 3 effectuer, sur un barreau et un tube de silice un dépat en phase vapeur de couches successives de poudre à bass de silice, puis à chau~fer le barreau et le tube à une température de l'ordre de 15mC pour agglomérer les couches, enfin à lntroduire le barreau dans le tube et à effectuer l'opération de flbrage, c'est-à-dlre porter l'ensemble barreau-tube à une température assez élevée pour obtenir le ramollis~ement du verre de sorte que le barreau et le tube adhèrent mutuellement, tout en étlrant longltudlnalement l'ensemble.
Pour flxer les idée~, avec un tube de départ dont le dlemètre est de l'ordre d'un centim~tre, la ~lbre peut evolr un dlamètre compris entre 50 et 300 mlcrons.
Ce procédé de reallsatlon d'une flbre optlque pr~sente un oHrtain nombre d'lnconvenlents.
En affst, la m~thode de d~p~t en phase vapeur eat complexe, lon~u~ et co~teuae. Elle condult ~ des ~paisseur~ ds d~pot falbles, dona a des épaisoeura d9 gainea reduites. Le rendement en produits d~poa~9 93t faible. Lo tube de déport dans lequel s'effectue le depot do~t ~tre court, oar ainon l'~paisaeur du dépot n'est pas homogèns. La ~tbre optlque obtenue est dono relativement courte : ll eat difficlle d'obtenir une longueur de flbre supérieure à un kllomètre.
La préaente invention a pour but de palller ces inconvenlents et de mettre en oeuvre un procédé beaucoup plu9 simple de reallsation ~ -- 1 ~ ~ .` . ' lOS8876 d'une fibre optique, La prssents invention a pour ob~st un proc~dé ds rsalisation d'une fibre optique consistant ~ à effectuer sur un barreau constitu~ d'un prsmier verre un premier dépôt superflciel somprenant un oxyds, - à effectuer sur un tube constitué d'un deuxl~me verre un second dép~t superficiel.
- à ohauffer ledit barreau et ledit tube pour agglom~rer lesdits pr~mier et second dépôts superficiels, - à introduire ledit barreau dans ledit tube, - 3 porter ledit tube entourant ledit barr~au à une température suffisante pour obtenir le ramollissement desdits verrss, - et ~ étirer longitudlnalement le barreau et le tube ramollis, caractérisé par le fait que - ledlt premier dépôt superflclel est obtenu en recouvrant la surface dudlt barreau d'une couche d'une premlère solutlon d'un premier compose cholal dans le groupe constltué par l'oxyde de bore ~23~ l'oxyde de germanlum ~eO2. l'alumlne A1203, l'anhydride phosphorique P205, l'oxyde de lithium L120, l'oxyde de bérylllum ~eO, l'oxyde d'antimolne Sb203, l'oxyde d'arsenlc As203, l'oxyde de zinc ZnO et l'oxyde de magneslum MgO
~ et que ledit second d~p~t superflciel est obtenu en recouvrant la ourfMce dudit tube d'une oouohe d'une deuxième solution d'un deuxi~me compoa~ choisi d~n~ le ~roupe oonstitu~ par l'oxyde de bore B2û3, l'oxyde de ~ermflnium GeO2, l'alumine A1203, l'anhydrlde phosphorique P205, l'oxyde de lithium Li20, l'oxyde de beryllium OeO, l'oxyde d'antimolne Sb203, l'oxyde d'arYenic As203, l'oxyde de zlnc ZnO et l'oxyde de ma~nésium M~O, ledit ohau~age etant e~eotue de manière ~ ~ritter lesdites oouches et ~ lea ~alre adhérer re~pectlvement sur ledit barre~u et ledit tube.
L'inventlon est décrits oi-des~ous, à titre d'exemple purement illuatratif. mai9 nullement limitatif. - lOS8876 The present invention relates to reallation processes an optical fiber.
We know that an optical $ 1bre is a glass wire whose axlale or coewr part has a refractive index n1 different from that of the peripheral sheath of index n2. In general, n1 is greater than n2 so that a light wave can be transmitted through the heart of the fiber by successive reflections on the separation surface between the heart and the sheath.
A known process for producing an optical fiber consists of 3 perform a phase shift on a bar and a silica tube vapor of successive layers of powder with silica bass, then with heat the bar and the tube at a temperature of the order of 15mC for agglomerate the layers, finally to introduce the bar into the tube and to carry out the wiring operation, that is to say to wear the whole tube bar at a temperature high enough to obtain the softened ~ ement glass so that the bar and the tube adhere to each other, while stretching the assembly out.
To fix ideas ~, with a starting tube including the dlemeter is about a centimeter, the ~ lbre can evolve a diameter included between 50 and 300 mlcrons.
This process of reallsatlon of an optic flbre presents a oHrtain number of invenvenents.
In fact, the vapor phase method is complex, lon ~ u ~ and co ~ teuae. It condult ~ thick ~ ds d ~ pot falbles, dona has reduced gainaeura d9 gainea. Product yield d ~ poa ~ 9 93t low. Lo offset tube in which the deposit is made do ~ t ~ be short, oar ainon the ~ paisaeur of the deposit is not homogeneous. The ~ very large optlque obtained is relatively short: it is difficult to obtain a length of flbre greater than one kllometer.
The aim of the previous invention is to overcome these disadvantages and to implement a much more simple process of reallsation ~ -- 1 ~ ~ .`. '' lOS8876 an optical fiber, The present invention has for ob ~ st a process ~ ds rsalisation a fiber optic consisting ~ to be carried out on a bar made up ~ of a first glass first superficial deposit containing oxides, - to be performed on a tube consisting of a deuxl ~ me glass a second superficial dep.
- To heat said bar and said tube to agglomerate said first and second surface deposits, - introducing said bar into said tube, - 3 bring said tube surrounding said barr ~ to a sufficient temperature to obtain the softening of said warts, - And ~ stretch longitudlnalement the bar and the softened tube, characterized by the fact that - ledlt first superflclel deposit is obtained by covering the surface dudlt bar of a layer of a first solutlon of a first compound cholal in the group consisting of boron oxide ~ 23 ~
germanlum ~ eO2. alumina A1203, phosphoric anhydride P205, oxide lithium L120, beryllium oxide ~ eO, antimony oxide Sb203, arsenic oxide As203, zinc oxide ZnO and magnesium oxide MgO
~ and that said second d ~ p ~ t superflciel is obtained by covering the ourfMce of said tube of an oouohe of a second solution of a second ~ me compoa ~ chosen from ~ n ~ the ~ roupe oonstitu ~ by boron oxide B2û3, the oxide ~ ermflnium GeO2, alumina A1203, phosphoric anhydride P205, lithium oxide Li20, beryllium oxide OeO, antimony oxide Sb203, arYenic oxide As203, zinc oxide ZnO and maize oxide M ~ O, said ohau ~ age being e ~ eotue so ~ ~ ritter said oouches and ~ lea ~ alre adhere re ~ pectlvement on said bar ~ u and said tube.
The inventlon is described oi-des ~ ou, by way of example purely illusive. May9 in no way limitative. -
- 2 ~
~05887~
On dispose au départ d'un barreau cylindrique en 5ilic8 pure et d'un tube figalemOEnt en silice pure, dont le di~m~tre intérleur est sup~rieur au dlamètre extérieur du barreau~
On prépare une solution aqueuse d'oxyde de bors B203. Pour cela, on verse petit à petit 30 grammes environ d'oxyde de bore dans 100 ml d'eau~ Il est nécessalre d'utilissr des produi~s très purs :
l'oxyde de bore contlent moins de 1/100 0OO m8 d'l~ouretés et l'aau doit être désionlsée, sa reslstivlté étant supérieure à 10 mégohms. La reactlon est exothermlque. On agite soigneusement le mélange de manière à obtenir une p3te homogèns et on lalsse reposer.
On plonge ensulte dans la solutlon le barreau et le tube préalablement nettoyés. Après quelques secondes, on retire ces pièces de manlère que leur surface solt recouverts d'une couche de cette solutlon.
L'~palsseur de la cDuche peut être par exemple de quelque~ dixlèmes de mllllmètre~ : elle dépend de la vltesse à laquelle on retire les pièces de la solution.
Ensuite, les plèces pessent dans un four ~ 450C envlron p0ndent clnq ~ dix minutes pour sécher et fritter la Nuche déposse.
Apr~s refroidissement la couche odhère bien sur la silice.
2a Apr~s introduction du borreau dans le tube, on procède AU
fibr~e d~ manisru connue. Le~ piaces ~ont ch~u~fees dans un four à une temp~rature de l'ordre de 1gnO degr~s C., de manl~re ~ r~molllr le vorre. Puis, an ~tire longltudinnlement l'ensemble barreau-tube pour obtenir ùne fibre optique. Avec un tube de dlamatres 16~f19,3 mm et de longueur 1sa mm, et un barreau de di~mètre 14mm et d0 longueur 200mm, on ~ obt-nu une fibro de 2 kilom~tres de longueur ayant un di~mètre ext~rieur de 125 miorons ut un di~mstre de ooeur de 107 micron~, Les techniciens pen~ent qu'ou courQ de l'étlrege, l'oxyde de bore diffuse dans la pertie ~-periphérlque du b~rreau et ~urtoUt don~ le tube, de sorts qu'on obtient -`
9o une flbre dont le coeur sst un verre de silice pure et la gainB 89t un , . ~ . , ,, . . " , . . ... .
verre de silice dopéR à l'oxyde de bore, On peut aussi mettre en oeuvre le procédé décrit ci-dessus en utilisant, au lisu d'un tube en sillce pure~ un tube en verre de slllce dbpée à l'oxyde de bore, de tels verrss étant disponlbles actuell~ment Sur le marché. La mise en osuvre du procédé psrmet d'obtenir une fibre dont la gaine poss`ede un taux de dopage en oxyde de bore supérieur à
celul du verre du tube de départ. On augmente ainsi l'écart d'indice entre le coeur et la gaine, ce qui est un avantage dans certalns domaines d'appllcation.
On peut réaliser des fibres optiques dont le coeur est canstitué
par un verre de silice dopée par un composé apte à augmenter l'indice de réfr ætion, et dont la gaine est en silice pure. Dans ce cas, la solution dans laquelle le barreau et le tube sont plongés est une solutlon d'un composé tel que l'oxyde de germanium GeO2, l'alumine A1203, l'anhydride phosphorique P205, l'oxyde de lithium Li20, l'oxyde de beryllium BeO, l'oxyde d'antimolne Sb203, l'oxyde d'arsenic As203, l'oxyde de zinc ZnO
et l'oxyde de magn~slum MgO~
Cien entendu, le solvant utlllse dépend du compose choisl. Après avolr retlré le tube de la solution, on essule de pr~ference 8a sur~ace cyllndrique ext0rleure, de manlare ~ kviter au moment de l'etirage tout0 dif~usion du compo~ dans la partie peripherlque de la fibre, qui doit ~tre de eilloe pure.
On peut ~galement r~aliser des flbres optiques dont le w eur est oonotltu~ par un verre de slllce dopee par un des oompo~és citss oi-desaua aptus ~ augmenter son indice de r~raction, et dont la gaine est conatitu~e por un verre de silice dopee ~ l'oxyde de bore ayant un lndioe de re~raotion ln~rieur ~ celui de la ~llice. Oans ce Gas~ la 301ution dana laquelle est plonge le barreau est une solutlon d'un des aomposes cités ci~dessus aptes ~ augmenter l'lndice du verre, et le tube 3o eet plon~é dan9 une solution d'oxyde de bore, Ce tube peut etre constitué
de ~illce pure ou d'un verre de silice dope à l'oxyde de bors.
.-- ... . . .
;` :. -, - -lC~S8876 ~, Dans tous les ~3S, on peut recommencer plusieurs fols les opérations succe~sives de plongée du barreau dans la solution et de frittage de la couche déposée sur ce barreau de manière 3 d~poser plusieurs couches superposées. Il en est ~8 m~me pour les opér~tions concernant le tube. Le~ dlfférentes opérations de plon~ée d'une meme pièce peuvent etre effectuées dans des solutlons de ooncentrations différentes entre elles, ce qui permet de faire varier le gradient radial d'indice au nlveau de la surfacs de séparation du coeur ~t ds la gains dans la fibre optique obtenue.
Après frittage de la ~ou des) cou~he sur 1B tube et le barreau, et avant l'introduction du barre~u dans 18 tube, on peut effectuer un chauffage supplémentalre du barreau afin de vitrlfler les cw ches déposées.
Oans le cas où ll s'eglt de couches d'oxyde de bore, ce chauffage peut etre effectué ~ une température de 1 100C. environ.
Enfln, la fibre obtenue peut atre recouverte d'une mlncs couche d'une matlère plastlque de type orgflno-slllcique ou organo-fluorfie tellq que le polytétrafluoro~thylène ou le polyfluorure de vlnylldène. La matière plestique utllisée fl de préférence un indlce de réfractlon lnférleur à
celul de la galne de la flbre, afln de renforcer l'effet de r~flexlon optlque de 1~ ~alne, cette couche de matibre plastlque constitu~nt ~ussl une proteotlon mecanique de la flbre.
Les flbre~ obtenue3 par le proc~d~ selon l'lnvention peUvent Otre appliqu~es A de~ di~po~iti~s de t~l~communlcatlon optlqus.
~ ien entendu, l'inventlon n'est nullement limlt~e aux modes de r~ali~ation d~orits qul n'ont ete donn~ qu'~ tltre d'exemple. En p~rticuller, lea aolutions dont 11 a ~té questlon peuvent etre remplacées par de~ suapenslons des compos~s cit~s, et ces solutlons ou suspenslons pauvent ~tre r~ isées à l'~ide d'un ssul des compo~b~ ou d'un mslan~e de plusleuro de ces ¢ompo~ss.
5 _ - .
, , - . : "' " . ' : ' ' ' - 2 ~
~ 05887 ~
We initially have a cylindrical bar in pure 5ilic8 and a figalemOEnt tube of pure silica, whose di ~ m ~ be interior greater than the outside diameter of the bar An aqueous solution of bors oxide B203 is prepared. For this, we gradually pour in about 30 grams of boron oxide into 100 ml of water ~ It is necessary to use very pure products:
boron oxide contlent less than 1/100 0OO m8 of l ~ ourétées and the water must be deionized, its reslstivlté being greater than 10 megohms. Reactlon is exothermic. The mixture is carefully stirred so as to obtain a homogeneous p3te and lalsse rest.
We plunge into the solutlon the bar and the tube previously cleaned. After a few seconds, these pieces are removed from However, their surface is covered with a layer of this solutlon.
The ~ palsseur of cDuche can be for example of some ~ tenlemes of mllllmeter ~: it depends on the speed at which the parts are removed of the solution.
Then the plants weigh in an oven around 450C
cl0q ~ ten minutes to dry and sinter the deposited Nuche.
After cooling the layer well on the silica.
2a Apr ~ s introduction of the borreau in the tube, we proceed AU
fibr ~ ed ~ known manisru. The ~ piaces ~ have ch ~ u ~ fees in a one oven temperature of the order of 1gnO degrees C., so as to soften the yours. Then, an ~ pulls longltudinnlement the bar-tube assembly for get an optical fiber. With a tube of diameters 16 ~ f19.3 mm and length 1sa mm, and a bar of diameter ~ 14mm and d0 length 200mm, we ~ obt-nu a fibro of 2 km ~ very long having a di ~ outside meter ~ laughing of 125 miorons ut a heart diameter of 107 micron ~, Technicians pen ~ ent that ou courQ de étlrege, boron oxide diffuses in pertie ~ -periphérlque du b ~ rreau and ~ urtoUt don ~ the tube, of spells that we get -9o a flbre whose heart sst a glass of pure silica and the gainB 89t a ,. ~. , ,,. . ",.. ....
boron oxide doped silica glass, One can also implement the method described above in using, with a pure sillce tube ~ a slllce glass tube boron oxide dbpée, such verrss being available actuell ~ ment On the market. The implementation of the psrmet process to obtain a fiber whose sheath has a boron oxide doping rate greater than cell from the glass of the starting tube. This increases the index difference between the core and the sheath, which is an advantage in certain areas of application.
You can make optical fibers whose core is canstitué
by a silica glass doped with a compound capable of increasing the index of refraction, and the sheath of which is made of pure silica. In this case, the solution in which the bar and the tube are immersed is a solutlon of a compound such as germanium oxide GeO2, alumina A1203, anhydride phosphoric P205, lithium oxide Li20, beryllium oxide BeO, antimony oxide Sb203, arsenic oxide As203, zinc oxide ZnO
and magnesium oxide ~ MgO slum ~
Of course, the solvent used depends on the compound chosen. After avolr retlré the tube of the solution, we essule pr ~ ference 8a on ~ ace external cylinder, manlare ~ avoid when stretching everything dif ~ usion of the compo ~ in the peripherlque part of the fiber, which must ~ be of pure eilloe.
It is also possible to make optical fibers including the w eur is oonotltu ~ by a glass of slllce doped by one of the oompo ~ és citss oi-desaua aptus ~ increase its reaction index, and whose sheath is conatitu ~ e por a glass of silica doped ~ boron oxide having a lndioe de re ~ raotion ln ~ rieur ~ that of the ~ llice. Oans ce Gas ~ la 301ution dana which is plunged the bar is a solutlon of one of aomposes cited above ~ suitable ~ increase the glass index, and the tube 3o eet plon ~ é dan9 a boron oxide solution, This tube can be constituted ~ pure illce or a glass of silica doped with bors oxide.
- .... . .
; `:. -, - -lC ~ S8876 ~, In all ~ 3S, we can repeat several times the ~ sucive operations of plunging the bar into the solution and sintering of the layer deposited on this bar so as to lay 3 several superimposed layers. There are ~ 8 m ~ me for operations ~ tions concerning the tube. The ~ dlfférentes operations of plon ~ ée of a meme piece can be performed in concentration solutions different from each other, which allows you to vary the gradient radial index at the level of the core separation surfaces ~ t ds the gains in the optical fiber obtained.
After sintering the ~ or) neck ~ he on 1B tube and the bar, and before the introduction of the bar ~ u in 18 tube, one can perform a additional heating of the bar in order to vitrlfler the cw ches deposited.
In the case where layers of boron oxide are removed, this heating can be performed at a temperature of 1100C. about.
Infln, the fiber obtained can be covered with a mlncs layer a plastic material of the organoflllic or organofluoric type as polytétrafluoro ~ thylène or polyvinyldene fluoride. Matter plastic used preferably an index of refractor cell of the galle of the flbre, in order to reinforce the effect of r ~ flexlon optlque de 1 ~ ~ alne, this plastlque mat layer constitutes ~ nt ~ ussl a mechanical proteotlon of the flbre.
The flbre ~ obtained3 by the process ~ d ~ according to lnvention peUvent To be applied to de di ~ po ~ iti ~ s de t ~ l ~ communlcatlon optlqus.
~ ien heard, the inventlon is in no way limlt ~ e modes of realization of orits which have been given only as an example. In p ~ rticuller, lea aolutions of which 11 were questlon can be replaced by ~ suapenslons of the compounds ~ s cited, and these solutlons or suspenslons can be made with the idea of a compo ~ b ~ or a mslan plusleuro of these ¢ ompo ~ ss.
5 _ -.
,, -. : "'". ':'''
Claims (15)
- à porter ledit tubs entourant ledit barreau à une température suffisante pour obtenir le ramollissement desdits verres, - et à étirer longitudinalement le barreau et le tube ramollis, caractérisé par le fait que - ledit premier dépôt superficiel est obtenu en recouvrant la surface dudit barreau d'une couche d'une première solution d'un premier composé
choisi dans le groupe constitué par l'oxyde de bore B2O3, l'oxyde de germanium GeO2, l'alumine Al2O3, l'anhydride phosphorique P2O5, l'oxyde de lithium Li2O, l'oxyde de béryllium BeO, l'oxyde d'antimoine Sb2O3.
l'oxyde d'arsenic As2O3, l'oxyde de zinc ZnO et l'oxyde de magnésium MgO
- et que ledit second dépôt superficiel est obtenu en recouvrant la surface dudit tube d'une couche d'une deuxième solution d'un deuxième composé
choisi dans le groupe constitué par l'oxyde de bore B2O3, l'oxyde de germanium GeO2, l'alumine Al2O3, l'anhydride phosphorique P2O5, l'oxyde de lithium Li2O, l'oxyde de béryllium BaO, l'oxyde d'antimoine Sb2O3, l'oxyde d'arsenic As2O3, l'oxyde de zinc ZnO et l'oxyde de magnésium MgO, ledit chauffage étant effectué de manière à fritter lesdites couches et à
les faire adhérer respectivement sur ledit barreau et ledit tube. 1 / Method for producing an optical fiber consisting - to be carried out on a bar consisting of a first glass, a first surface deposit comprising an oxide, - to make a second deposit on a tube consisting of a second glass superficial, - heating said bar and said tube to agglomerate said first and second surface deposits, - Introducing said bar into said tube.
- To bring said tubing surrounding said bar to a sufficient temperature to obtain the softening of said glasses, - and to stretch the softened bar and tube longitudinally, characterized by the fact that - said first surface deposit is obtained by covering the surface said rod of a layer of a first solution of a first compound chosen from the group consisting of boron oxide B2O3, germanium GeO2, alumina Al2O3, phosphoric anhydride P2O5, oxide of lithium Li2O, beryllium oxide BeO, antimony oxide Sb2O3.
arsenic oxide As2O3, zinc oxide ZnO and magnesium oxide MgO
- and that said second surface deposit is obtained by covering the surface of said tube with a layer of a second solution of a second compound chosen from the group consisting of boron oxide B2O3, germanium GeO2, alumina Al2O3, phosphoric anhydride P2O5, oxide of lithium Li2O, beryllium oxide BaO, antimony oxide Sb2O3, oxide arsenic As2O3, zinc oxide ZnO and magnesium oxide MgO, said heating being effected so as to sinter said layers and to make them adhere respectively to said bar and said tube.
par le fait qu'après étirage du barreau et du tube ramollis, on recouvre ladite fibre d'une couche d'une matière plastique ayant un indice de réfraction inférieur à celui de la gaine de ladite fibre. 12. Method according to claim 1, characterized by the fact that after stretching the bar and the softened tube, covering said fiber with a layer of plastic having a refractive index lower than that of the sheath said fiber.
par le fait que ladite matière plastique est le polytétra-fluoroéthylène. 13. Method according to claim 12, characterized by the fact that said plastic material is polytetra-fluoroethylene.
par le fait que le chauffage dudit barreau et dudit tube est effectué à une température de l'ordre de 450°C. 15. Method according to claim 14, characterized by the fact that the heating of said bar and of said tube is carried out at a temperature of the order of 450 ° C.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7513697A FR2309884A1 (en) | 1975-04-30 | 1975-04-30 | METHOD FOR MAKING AN OPTICAL FIBER |
Publications (1)
Publication Number | Publication Date |
---|---|
CA1058876A true CA1058876A (en) | 1979-07-24 |
Family
ID=9154721
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA251,064A Expired CA1058876A (en) | 1975-04-30 | 1976-04-26 | Method for making optical fiber |
Country Status (9)
Country | Link |
---|---|
JP (1) | JPS51149039A (en) |
BE (1) | BE840636A (en) |
CA (1) | CA1058876A (en) |
DE (1) | DE2617825A1 (en) |
FR (1) | FR2309884A1 (en) |
GB (1) | GB1528096A (en) |
IT (1) | IT1059000B (en) |
NL (1) | NL184268C (en) |
SE (1) | SE416948B (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2744129A1 (en) * | 1977-09-30 | 1979-04-12 | Siemens Ag | CORE-COAT GLASS FIBER WITH LATERAL COUPLING AREA |
DE2853873A1 (en) * | 1978-12-13 | 1980-07-03 | Siemens Ag | Quartz glass optical fibre with high tensile strength - obtd. by coating rod blank with boric oxide, or boric oxide and silica, prior to drawing of fibre |
-
1975
- 1975-04-30 FR FR7513697A patent/FR2309884A1/en active Granted
-
1976
- 1976-04-12 BE BE1007326A patent/BE840636A/en not_active IP Right Cessation
- 1976-04-22 NL NLAANVRAGE7604304,A patent/NL184268C/en not_active IP Right Cessation
- 1976-04-23 DE DE19762617825 patent/DE2617825A1/en not_active Withdrawn
- 1976-04-26 CA CA251,064A patent/CA1058876A/en not_active Expired
- 1976-04-28 IT IT22765/76A patent/IT1059000B/en active
- 1976-04-29 SE SE7604989A patent/SE416948B/en not_active IP Right Cessation
- 1976-04-29 GB GB17566/76A patent/GB1528096A/en not_active Expired
- 1976-04-30 JP JP51048717A patent/JPS51149039A/en active Pending
Also Published As
Publication number | Publication date |
---|---|
SE7604989L (en) | 1976-10-31 |
BE840636A (en) | 1976-10-12 |
NL184268C (en) | 1989-06-01 |
NL7604304A (en) | 1976-11-02 |
IT1059000B (en) | 1982-05-10 |
SE416948B (en) | 1981-02-16 |
FR2309884A1 (en) | 1976-11-26 |
FR2309884B1 (en) | 1977-11-10 |
NL184268B (en) | 1989-01-02 |
GB1528096A (en) | 1978-10-11 |
JPS51149039A (en) | 1976-12-21 |
DE2617825A1 (en) | 1976-11-11 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
SU1145923A3 (en) | Method of manufacturing optical fibre semifinished product | |
EP0135449B1 (en) | Glass fibres and composition suitable for making them | |
US4336047A (en) | Method for fabricating single-mode and multimode fiber optic access couplers | |
JPS586921B2 (en) | optical transmission line | |
Sigel Jr et al. | Photoluminescence in as-drawn and irradiated silica optical fibers: an assessment of the role of non-bridging oxygen defect centers | |
EP0054495B2 (en) | Optical waveguide with a fluor-doped core | |
JPS584323B2 (en) | Kougakusenino Seizouhouhou | |
EP0161999B1 (en) | Methods for making fibres and optical components in fluor glass and apparatus used therefor | |
JPH044988B2 (en) | ||
US4327965A (en) | Single mode fibre and method of manufacture | |
Massera et al. | Processing and characterization of core–clad tellurite glass preforms and fibers fabricated by rotational casting | |
CA2127345A1 (en) | Method for producing a multicomponent glass article of solid or hollow cylindrical shape | |
CA1058876A (en) | Method for making optical fiber | |
JP2542356B2 (en) | Radiation resistant method for silica optical fiber glass | |
Yamane et al. | Preparation of gradient-index glass rods by the sol-gel process | |
US5037464A (en) | Method of cleaning and carbon coating optical fiber | |
JPS616144A (en) | Sintering method of parent glass material for optical fiber | |
FR2488872A1 (en) | PROCESS FOR PRODUCING SINGLE-SHAPED BASE MATERIAL FOR OPTICAL TRANSMISSION FIBER | |
JPS6362454B2 (en) | ||
US3856494A (en) | Light-conducting glass structures made by vaporization | |
FR2510545A1 (en) | PROCESS FOR PREPARING A MULTIPLE OPTICAL FIBER | |
Pitt et al. | Telluride glass fibres for transmission in the 8-12 micrometres waveband | |
Zhang et al. | New glasses based on tellurium and selenium halide for IR fiber optics | |
FR2809720A1 (en) | PREFORMS AND OPTICAL FIBERS COATED WITH ALUMINA AND / OR SILICA | |
JPH03232732A (en) | Production of glass preform for hydrogen-resistant optical fiber |