DE1967211C2 - Optical fiber - Google Patents
Optical fiberInfo
- Publication number
- DE1967211C2 DE1967211C2 DE1967211A DE1967211A DE1967211C2 DE 1967211 C2 DE1967211 C2 DE 1967211C2 DE 1967211 A DE1967211 A DE 1967211A DE 1967211 A DE1967211 A DE 1967211A DE 1967211 C2 DE1967211 C2 DE 1967211C2
- Authority
- DE
- Germany
- Prior art keywords
- core
- silicon dioxide
- glass
- fiber
- refractive index
- 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
- 239000013307 optical fiber Substances 0.000 title claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 29
- 239000000377 silicon dioxide Substances 0.000 claims description 14
- 235000012239 silicon dioxide Nutrition 0.000 claims description 12
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 10
- 238000005253 cladding Methods 0.000 claims description 9
- 235000010215 titanium dioxide Nutrition 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 6
- 239000011162 core material Substances 0.000 description 26
- 239000000835 fiber Substances 0.000 description 15
- 239000011521 glass Substances 0.000 description 12
- 230000005540 biological transmission Effects 0.000 description 10
- 238000010521 absorption reaction Methods 0.000 description 7
- 239000005304 optical glass Substances 0.000 description 7
- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 239000002019 doping agent Substances 0.000 description 3
- 238000000197 pyrolysis Methods 0.000 description 3
- VXEGSRKPIUDPQT-UHFFFAOYSA-N 4-[4-(4-methoxyphenyl)piperazin-1-yl]aniline Chemical compound C1=CC(OC)=CC=C1N1CCN(C=2C=CC(N)=CC=2)CC1 VXEGSRKPIUDPQT-UHFFFAOYSA-N 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000005049 silicon tetrachloride Substances 0.000 description 2
- 239000004408 titanium dioxide Substances 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000002835 absorbance Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- XJDNKRIXUMDJCW-UHFFFAOYSA-J titanium tetrachloride Chemical compound Cl[Ti](Cl)(Cl)Cl XJDNKRIXUMDJCW-UHFFFAOYSA-J 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
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/06—Glass compositions containing silica with more than 90% silica by weight, e.g. quartz
-
- 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
- C03B37/10—Non-chemical treatment
- C03B37/14—Re-forming fibres or filaments, i.e. changing their shape
- C03B37/15—Re-forming fibres or filaments, i.e. changing their shape with heat application, e.g. for making optical fibres
-
- 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
- C03C13/00—Fibre or filament compositions
- C03C13/04—Fibre optics, e.g. core and clad fibre compositions
- C03C13/045—Silica-containing oxide glass compositions
-
- 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
- C03C23/00—Other surface treatment of glass not in the form of fibres or filaments
-
- 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
- C03C25/002—Thermal treatment
-
- 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
-
- 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
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
-
- 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
- C03C2201/00—Glass compositions
- C03C2201/06—Doped silica-based glasses
- C03C2201/30—Doped silica-based glasses containing metals
- C03C2201/40—Doped silica-based glasses containing metals containing transition metals other than rare earth metals, e.g. Zr, Nb, Ta or Zn
- C03C2201/42—Doped silica-based glasses containing metals containing transition metals other than rare earth metals, e.g. Zr, Nb, Ta or Zn containing titanium
-
- 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
- C03C2203/00—Production processes
- C03C2203/50—After-treatment
- C03C2203/52—Heat-treatment
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Geochemistry & Mineralogy (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Optics & Photonics (AREA)
- Glass Compositions (AREA)
- Surface Treatment Of Glass Fibres Or Filaments (AREA)
Description
Die Erfindung betrifft eine optische Glasfaser, bestehend aus einem Mantel und einem Kern mit höherem Brechungsindex als dem des Mantels, wobei Kern und Mantel aus SiO2-haltigem Material bestehen.The invention relates to an optical glass fiber, consisting of a cladding and a core with a higher refractive index than that of the cladding, the core and cladding being made of SiO 2 -containing material.
Die folgende Schilderung des Standes der Technik dient zum besseren Verständnis der Erfindung. Optische Glasfasern sind bereits bekannt Das auf diesem Gebiet grundlegende Patent ist die US-PS 28 25 260, in der das Überziehen eines Kernwerkstoffes mit einem anderen Material, das einen anderen Brechungsindex aufweist, beschrieben ist. Glas wurde bereits sowohl als Kern-••'erkstoff als auch als Überzugsmaterial verwendet. So beschreibt z. ß. die US-PS 35 89 793 ein Verfahren zur Herstellung optischer Glashsern nach dem Stab-Rohr-Verfahren. The following description of the prior art serves to provide a better understanding of the invention. Optical glass fibers are already known in the art The basic patent is the US-PS 28 25 260 in which the coating a Kernwerkstof f it with another material having a different refractive index, is described. Glass has already been used both as a core material and as a covering material. So describes z. ß. the US-PS 35 89 793 a process for the production of optical glasses by the rod-tube process.
Aus t'er UP PS 33 20 114 sind optische Glasfasern bekannt, die aus einem Mantel unJ einem Kern mit höherem Brechungsindex als dem des ManHs bestehen, wobei Kern und Mantel aus SiOj-haltigem Material bestehen. Optical glass fibers are made from t'er UP PS 33 20 114 known, which consist of a cladding and a core with a higher refractive index than that of the ManH, The core and shell are made of SiOj-containing material.
Die US-PS 31 57 726 beschreibt die Verwendung von optischen Glasfasern, insbesondere die Verwendung von optischen Glasfasern zur Übertragung von Informationen. Aus der US-PS 31 57 726 geht hervor, daU die Verwendbarkeit einer optischen Glasfaser für die Übertragung von Informationen dann wesentlich verbessert werden kann, wenn eine präzise Einstellung der Differenz zwischen den Brechungsindizes des Kerns einerseits und des Mantels andererseits erreicht wird. Die Übertragung in einer einzigen Wellenmode (Wellenform) kann dann erfolgreich durchgeführt werden, wenn der folgenden Gleichung genüge getan istThe US-PS 31 57 726 describes the use of optical glass fibers, in particular the use of optical fibers for the transmission of information. From US-PS 31 57 726 it emerges that the The usability of an optical glass fiber for the transmission of information is then significantly improved can be if a precise adjustment of the difference between the refractive indices of the core on the one hand and the jacket, on the other hand, is achieved. The transmission in a single wave mode (waveform) can then be performed successfully when the following equation is satisfied
2,4 S 2/r -2-2.4 S 2 / r -2-
>l/2> l / 2
indizes des Kerns einerseits und des Mantels andererseits klein ist und der obigen Gleichung genügt. Selbstverständlich ist ein relativ großer Kerndurchmesser wünschenswert, weil dann leichter Licht in den Kern eingespeist werden kann.indices of the core on the one hand and the jacket on the other is small and satisfies the above equation. It goes without saying that the core diameter is relatively large desirable because light can then be fed into the core more easily.
Eine Aufgabe der Erfindung ist es, eine optische Glasfaser zu schaffen, bestehend aus einem Mantel und einem Kern mit höherem Brechungsindex als dem des Mantels.It is an object of the invention to provide a glass optical fiber to create, consisting of a cladding and a core with a higher refractive index than that of the Coat.
to Diese Aufgabe wird erfhdungsgcmäß dadurch gelöst, daß der Kern aus Siliziumdioxid hoher Reinheit undAccording to the invention, this task is solved by that the core is made of high purity silicon dioxide and
tan(lV)-oxid, also eines Dotierungsmittels, kann, wie von der Theorie nach dem Stande der Technik gefordert, die Differenz zwischen den Brechungsindiz.es des Kerns einerseits und des Mantels andererseits genau, d. h. kontrolliert, eingestellt werden und damit kann auch eine kleine Brechungsdifferenz eingestellt werden.Tan (IV) oxide, i.e. a dopant, can, as from According to the state of the art theory, the difference between the Brechungsindiz.es of the core on the one hand and the coat on the other hand exactly, i. H. controlled, adjusted and with it a small refractive difference can be set.
Die für die erfindungsgemäßen optischen Glasfasern erforderlichen Gläser hoher Reinheit werden am besten durch Verfahren hergestellt, die dem in der US-PS 23 26 059 beschriebenen Verfahren ähneln. Diese Patentschrift beschreibt ein Verfahren zur Herstellung eines Oxids durch Flammenpyrolyse und anschließende Formung des Oxids zu einer Glaskugel auf einer Oberfläche. Die Glaskugel wird dann zu einem Stab geformt, der den Kern der optischen Glasfaser bildet Gemäß der Erfindung enthält der aus Siliziumdioxid hoher Reinheit bestehende Kern das Dotierungsmittel Titan(IV)-oxid, das seinen Brechungsindex erhöht.The high purity glasses required for the optical glass fibers of the present invention become best prepared by processes similar to that described in US Pat. No. 2,326,059. This patent specification describes a process for the production of an oxide by flame pyrolysis and subsequent Forming the oxide into a glass ball on a surface. The glass ball is then shaped into a rod, Which constitutes the core of the glass optical fiber According to the invention, the one made of silicon dioxide contains high purity existing core contains the dopant titanium (IV) oxide, which increases its refractive index.
Nach einer Ausführungsform der Erfindung wird die Glaskugel, die später den Kern bildet aus Siliziumdioxid hoher Reinheit und Titandioxid durch Pyrolyse von Siliziumtetrachlorid- und Titantetrachlorid-Dämpfen und Kondensieren des auf diese Weise erhaltenen Siliziumdioxids und Titandioxids hergestellt. Dann wird aus geschmolzenem Siliziumdioxid ein Tubus geformt der über den Stab geschoben wird; das so erhaltene Glasteil wird dann zu der Glasfaser ausgezogen. Der Siliziumdioxid-Überzug wird aufgrund seiner Reinheit und seines Brechungsindex, der kleiner ist als der des Kernstücks, verwendet Aufgrund de·· geforderten Reinheit wird der Mantel vorzugsweise ebenfalls durch Pyrolyse von Siliziumtetrachlorid-Dämpfen und Kondensieren des auf diese Weise erhaltenen Siliziumdioxids hergestellt According to one embodiment of the invention, the glass ball, which later forms the core, is made of silicon dioxide high purity and titanium dioxide through pyrolysis of silicon tetrachloride and titanium tetrachloride vapors and Condensing the thus obtained silicon dioxide and titanium dioxide produced. Then melted Silicon dioxide forms a tube that is pushed over the rod; the glass part thus obtained is then drawn out to the fiberglass. The silica coating is because of its purity and its Refractive index, which is smaller than that of the core, used due to the ·· required purity the jacket is preferably also made by pyrolysis of silicon tetrachloride vapors and condensation of the silica obtained in this way
so führungsbcispiele erläutert die auch eine Wärmebehandlung vorsehen, für den Fall, daß das Weiterziehen der Glasfaser bei hohen Temperaturen eine Reduktion des Glases verursacht hat.management examples also explain heat treatment provide, in the event that the further drawing of the glass fiber at high temperatures, a reduction of the glass.
a - Kerndurchmesser, a - core diameter,
bedeuten.mean.
Aus der vorstehenden Gleichung ergibt sich, daß die Übertragung von Informationen in siner einzigen Wellenmode dann befriedigend erreicht werden kann, wenn ein relativ großer Kerndurchmesser vorhanden ist, vorausgesetzt, daß die Differenz zwischen den Brechungs-From the above equation it follows that the transmission of information in its single wave mode can be achieved satisfactorily if there is a relatively large core diameter, provided that that the difference between the refractive
Es wurde ein optisches Glasfaser-Gerät mit einem Durchmesser von 0,0112 cm hergestellt wobei der Durchmesser des Kernstücks ca. 0,0110 cm und die Dikke des Überzugs ca. 0,00127 cm betrug. Der Überzug bestand aus reinem, geschmolzenem (fused) Siliziumdioxid-Glas, während der Glaskern aus 93,1% Siliziumdioxid und 6,9% Titanoxid — in Gewichtsprozenten auf Oxidbasis — zusammengesetzt wnr. Diese Faser wurde bei 1900° C weitergezogen, bis geeignete Abmessungen erreicht waren Die weitergezogene Faser wies eine sehr geringe Lichtdurchlässigkeit auf; der Absorptionskoeffizient betrug ca. 0,025 cm-'. Die Faser wurde dann A fiber optic device with a diameter of 0.0112 cm was made with the The diameter of the center piece is approx. 0.0110 cm and the thickness of the coating was about 0.00127 cm. The coating consisted of pure, fused silicon dioxide glass, while the glass core consists of 93.1% silicon dioxide and 6.9% titanium oxide - in percent by weight Oxide base - composed wnr. This fiber was further drawn at 1900 ° C until suitable dimensions The fiber that was drawn on had very little light transmission; the absorption coefficient was about 0.025 cm- '. The fiber then became
in reiner Sauerstoffatmosphäre 16 Stunden bei 800°C einer Wärmebehandlung unterworfen. Nach der Wärmebehandlung wurde eine wesentlich bessere Lichtdurchlässigkeit gefunden; der Absorptionskoet'fizient betrug ca. 0,008 cm-'. Diese Verkleinerung des Absorp- s tionskoeffizienten entsprach annähernd einer Verbesserung um den Faktor 3. Eine Verbesserung des Absorptionskoeffizienten ca. um den Faktor 3 entspricht einer Erhöhung der Lichtdurchlässigkeit ca. um den Faktor 20. bezogen auf eine 1 cm lange Faser.subjected to a heat treatment in a pure oxygen atmosphere for 16 hours at 800 ° C. After the heat treatment a much better light transmission was found; the absorption coefficient was about 0.008 cm- '. This reduction in absorbance tion coefficient corresponded approximately to an improvement by a factor of 3. An improvement in the absorption coefficient Approx. by a factor of 3 corresponds to an increase in light transmission by a factor of approx 20. based on a 1 cm long fiber.
Es wurde ein optisches Glasfaser-Gerät mit einem Durchmesser von 0,0058 cm hergestellt, wobei der Durchmesser des Kernstücks ca. 0,0010 cm und die Dikke des Überzugs ca. 0,0279 cm betrug. Überzug und Glaskern hatten dieselbe Zusammensetzung wie im Beispiel 1. Nach dem Weiterziehen der Faser bei 1900° C war die Lichtdurchlässigkeit gering; der Absorptionskoeffizient betrug ca. 0.087 cm-'. Die Faser wurde dann in reiner Sauerstoffatmosphäre 14 Stunden bei 600°C einer Wärmebehandlung untei^ogen. Durch diese Wärmebehandlung wurde die Lichtdurchlässigkeit wesentlich verbessert; der Absorptionskoeffizient betrug ca. 0,0087 cm-'. Diese Verkleinerung des Absorptionskoeffizienten entsprach annähernd einer Verbesserung um den Faktor 10. Eine Verbesserung des Absorptionskoeffizienten ca. um den Faktor to entspricht einer Erhöhung der Lichtdurchlässigkeit ca. um den Faktor 20 000, bezogen auf eine 1 cm lange Faser.A fiber optic device 0.0058 cm in diameter was made with the The diameter of the core was about 0.0010 cm and the thickness of the cover was about 0.0279 cm. Coating and Glass cores had the same composition as in Example 1. After the fiber was drawn further at 1900.degree the light transmission was low; the absorption coefficient was approx. 0.087 cm- '. The fiber was then in pure oxygen atmosphere subject to heat treatment for 14 hours at 600 ° C. Through this heat treatment the light transmission has been significantly improved; the absorption coefficient was approx. 0.0087 cm- '. This reduction in the absorption coefficient corresponded approximately to an improvement by the factor 10. An improvement in the absorption coefficient approx. by the factor to corresponds to an increase the light transmission approx. by a factor of 20,000, based on a 1 cm long fiber.
Gegenüber der eingangs erwähnten US-PS 33 20 11* unterscheidet sich die Erfindung dadurch, daß nach diesem Stand der Technik siliziumhaltiges Material f Qr den Kern der Glasfaser verwendet wird und die erforderliehe Einstellung eines unterschiedlichen Brechungsindex dadurch bewerkstelligt wird, daß die Oberfläche des Kernmaterials mit einer wäßrigen Chlorid-Lösung aus der Gruppe der Alkali- und Erdalkali-Chloride behandelt wird, um deren Brechungsindex zu erniedrigen. Demgegenüber besteht der Kern bei der Erfindung aus Siliziumdioxid hoher Reinheit und einem Dotierungsmittel, nämlich Titan(IV)-oxid und der Mantel aus Siliziumdioxid hoher Reinheit, d h, hier ist umgekehrt der Kern behandelt, um den erforderlichen höheren Brechungsindex zu erhalten. Schon aus diesem Grund konnte diese Druckschrift dem Durchschnittsfachmann vom Prioritätstag die erflndungsgemäße Kombination nicht nahelegen.Compared to the aforementioned US-PS 33 20 11 * The invention differs in that, according to this prior art, silicon-containing material for the Core of the glass fiber is used and the required Setting a different refractive index is achieved in that the surface of the Core material treated with an aqueous chloride solution from the group of alkali and alkaline earth chlorides to lower their refractive index. In contrast, the core in the invention consists of High-purity silicon dioxide and a dopant, namely titanium (IV) oxide and the cladding made of silicon dioxide high purity, i.e. here the core is reversely treated to achieve the required higher refractive index to obtain. For this reason alone, this publication could be familiar to the average person skilled in the art from the priority date do not suggest the combination according to the invention.
5050
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Claims (2)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US70793868A | 1968-02-26 | 1968-02-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1967211C2 true DE1967211C2 (en) | 1984-10-11 |
Family
ID=24843754
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE1967211A Expired DE1967211C2 (en) | 1968-02-26 | 1969-02-25 | Optical fiber |
| DE1909433A Withdrawn DE1909433B2 (en) | 1968-02-26 | 1969-02-25 | Process for the production of a · * 1 ™ * 11 optical glass fiber with high permeability, consisting essentially of suicide dioxide and titanium oxide |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE1909433A Withdrawn DE1909433B2 (en) | 1968-02-26 | 1969-02-25 | Process for the production of a · * 1 ™ * 11 optical glass fiber with high permeability, consisting essentially of suicide dioxide and titanium oxide |
Country Status (4)
| Country | Link |
|---|---|
| DE (2) | DE1967211C2 (en) |
| FR (1) | FR2002589A1 (en) |
| GB (1) | GB1213603A (en) |
| NL (1) | NL6902919A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995024751A2 (en) * | 1994-03-10 | 1995-09-14 | Iowa State University Research Foundation, Inc. | Ule laser fibers and method of manufacture |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2002589A1 (en) * | 1968-02-26 | 1969-10-31 | Corning Glass Works | |
| US3711262A (en) * | 1970-05-11 | 1973-01-16 | Corning Glass Works | Method of producing optical waveguide fibers |
| GB1391177A (en) * | 1971-08-09 | 1975-04-16 | Thermal Syndicate Ltd | Vitreous siliceous material |
| GB1427327A (en) * | 1972-06-08 | 1976-03-10 | Standard Telephones Cables Ltd | Glass optical fibres |
| US3884550A (en) * | 1973-01-04 | 1975-05-20 | Corning Glass Works | Germania containing optical waveguide |
| DE2927109A1 (en) * | 1979-07-05 | 1981-01-08 | Johannes Loersch | SLIDE FRAME |
| DE69915181T2 (en) * | 1998-07-15 | 2004-07-29 | Kitagawa Industries Co., Ltd., Nagoya | Quartz glass, optical element and fiber optic device resistant to ultraviolet and radioactive radiation, and manufacturing method therefor |
| JP4492123B2 (en) | 2004-01-05 | 2010-06-30 | 旭硝子株式会社 | Silica glass |
| DE102004015766B4 (en) * | 2004-03-23 | 2016-05-12 | Asahi Glass Co., Ltd. | Use of a SiO 2 -tiO 2 glass as a radiation-resistant substrate |
| JP2009274947A (en) * | 2008-04-16 | 2009-11-26 | Asahi Glass Co Ltd | Silica glass for euv lithography optical component containing tio2 |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2326059A (en) * | 1939-04-22 | 1943-08-03 | Corning Glass Works | Glass having an expansion lower than that of silica |
| FR1287540A (en) * | 1961-02-02 | 1962-03-16 | Saint Gobain | Further training in the manufacture of silica glass or silicic glasses |
| US3227032A (en) * | 1961-03-30 | 1966-01-04 | American Optical Corp | Energy conducting fibers formed of sapphire cladded with quartz |
| US3320114A (en) * | 1963-07-31 | 1967-05-16 | Litton Prec Products Inc | Method for lowering index of refraction of glass surfaces |
| DE1909433A1 (en) * | 1968-02-26 | 1969-09-18 | Corning Glass Works | Process for the production of a glass with high light transmission |
| DE2122895A1 (en) * | 1970-05-11 | 1971-11-25 | Corning Glass Works | Process for making optical fibers |
| DE2122896A1 (en) * | 1970-05-11 | 1971-12-16 | Corning Glass Works | Optical waveguide |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1909433U (en) | 1964-11-26 | 1965-02-04 | Hamaphot K G Hanke & Thomas | SLIDER FRAME. |
-
1969
- 1969-02-20 FR FR6904298A patent/FR2002589A1/fr not_active Withdrawn
- 1969-02-24 GB GB9674/69A patent/GB1213603A/en not_active Expired
- 1969-02-25 DE DE1967211A patent/DE1967211C2/en not_active Expired
- 1969-02-25 DE DE1909433A patent/DE1909433B2/en not_active Withdrawn
- 1969-02-25 NL NL6902919A patent/NL6902919A/xx unknown
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2326059A (en) * | 1939-04-22 | 1943-08-03 | Corning Glass Works | Glass having an expansion lower than that of silica |
| FR1287540A (en) * | 1961-02-02 | 1962-03-16 | Saint Gobain | Further training in the manufacture of silica glass or silicic glasses |
| US3227032A (en) * | 1961-03-30 | 1966-01-04 | American Optical Corp | Energy conducting fibers formed of sapphire cladded with quartz |
| US3320114A (en) * | 1963-07-31 | 1967-05-16 | Litton Prec Products Inc | Method for lowering index of refraction of glass surfaces |
| DE1909433A1 (en) * | 1968-02-26 | 1969-09-18 | Corning Glass Works | Process for the production of a glass with high light transmission |
| DE2122895A1 (en) * | 1970-05-11 | 1971-11-25 | Corning Glass Works | Process for making optical fibers |
| DE2122896A1 (en) * | 1970-05-11 | 1971-12-16 | Corning Glass Works | Optical waveguide |
Non-Patent Citations (1)
| Title |
|---|
| Proc. IEE, Bd. 113, Nr. 7 (1966), Inorganic Glass-Forming Systems (1967), S. 199-201 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5755850A (en) * | 1992-09-24 | 1998-05-26 | Iowa State University Research Foundation | Method of making a surgical laser fiber from a monolithic silica titania glass rod |
| WO1995024751A2 (en) * | 1994-03-10 | 1995-09-14 | Iowa State University Research Foundation, Inc. | Ule laser fibers and method of manufacture |
| WO1995024751A3 (en) * | 1994-03-10 | 1995-12-21 | Univ Iowa State Res Found Inc | Ule laser fibers and method of manufacture |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1909433A1 (en) | 1969-09-18 |
| NL6902919A (en) | 1969-08-28 |
| DE1909433B2 (en) | 1979-02-01 |
| GB1213603A (en) | 1970-11-25 |
| FR2002589A1 (en) | 1969-10-31 |
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