DE2444100C3 - Verfahren zur Herstellung von innenbeschichteten Glasrohren zum Ziehen von Lichtleitfasern - Google Patents
Verfahren zur Herstellung von innenbeschichteten Glasrohren zum Ziehen von LichtleitfasernInfo
- Publication number
- DE2444100C3 DE2444100C3 DE2444100A DE2444100A DE2444100C3 DE 2444100 C3 DE2444100 C3 DE 2444100C3 DE 2444100 A DE2444100 A DE 2444100A DE 2444100 A DE2444100 A DE 2444100A DE 2444100 C3 DE2444100 C3 DE 2444100C3
- Authority
- DE
- Germany
- Prior art keywords
- optical fibers
- plasma
- production
- reactive deposition
- glass tubes
- 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 description 16
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- 239000013307 optical fiber Substances 0.000 title claims description 8
- 239000011521 glass Substances 0.000 title claims description 4
- 230000008021 deposition Effects 0.000 claims description 15
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 13
- 239000011162 core material Substances 0.000 claims description 6
- 238000005253 cladding Methods 0.000 claims description 4
- 239000010453 quartz Substances 0.000 claims description 4
- 238000009792 diffusion process Methods 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 description 6
- 239000007789 gas Substances 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 238000010574 gas phase reaction Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 235000012239 silicon dioxide Nutrition 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 229910003902 SiCl 4 Inorganic materials 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 229910052681 coesite Inorganic materials 0.000 description 2
- 229910052906 cristobalite Inorganic materials 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 150000002484 inorganic compounds Chemical class 0.000 description 2
- 229910010272 inorganic material Inorganic materials 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- 229910052682 stishovite Inorganic materials 0.000 description 2
- 229910052905 tridymite Inorganic materials 0.000 description 2
- -1 B. TiO 2 Chemical class 0.000 description 1
- 229910005793 GeO 2 Inorganic materials 0.000 description 1
- 229910004028 SiCU Inorganic materials 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 229910010165 TiCu Inorganic materials 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000013517 stratification Methods 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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]
- C03B37/018—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 glass deposition on a glass substrate, e.g. by inside-, modified-, plasma-, or plasma modified- chemical vapour deposition [ICVD, MCVD, PCVD, PMCVD], i.e. by thin layer coating on the inside or outside of a glass tube or on a glass rod
- C03B37/01807—Reactant delivery systems, e.g. reactant deposition burners
- C03B37/01815—Reactant deposition burners or deposition heating means
- C03B37/01823—Plasma deposition burners or heating means
- C03B37/0183—Plasma deposition burners or heating means for plasma within a tube substrate
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Plasma & Fusion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Manufacture, Treatment Of Glass Fibers (AREA)
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2444100A DE2444100C3 (de) | 1974-09-14 | 1974-09-14 | Verfahren zur Herstellung von innenbeschichteten Glasrohren zum Ziehen von Lichtleitfasern |
| GB37392/75A GB1519994A (en) | 1974-09-14 | 1975-09-11 | Glass tubes for fibre-optics |
| JP10954675A JPS5651138B2 (enExample) | 1974-09-14 | 1975-09-11 | |
| FR7528025A FR2284572A1 (fr) | 1974-09-14 | 1975-09-12 | Procede pour la realisation de tubes en verre a revetement interieur pour l'etirage de fibres optiques |
| US05/852,068 US4145456A (en) | 1974-09-14 | 1977-11-16 | Method of producing internally coated glass tubes for the drawing of fibre optic light conductors |
| US06/079,847 USRE30635E (en) | 1974-09-14 | 1979-09-28 | Method of producing internally coated glass tubes for the drawing of fibre optic light conductors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2444100A DE2444100C3 (de) | 1974-09-14 | 1974-09-14 | Verfahren zur Herstellung von innenbeschichteten Glasrohren zum Ziehen von Lichtleitfasern |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DE2444100A1 DE2444100A1 (de) | 1976-03-25 |
| DE2444100B2 DE2444100B2 (de) | 1978-08-10 |
| DE2444100C3 true DE2444100C3 (de) | 1979-04-12 |
Family
ID=5925814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE2444100A Expired DE2444100C3 (de) | 1974-09-14 | 1974-09-14 | Verfahren zur Herstellung von innenbeschichteten Glasrohren zum Ziehen von Lichtleitfasern |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | USRE30635E (enExample) |
| JP (1) | JPS5651138B2 (enExample) |
| DE (1) | DE2444100C3 (enExample) |
| FR (1) | FR2284572A1 (enExample) |
| GB (1) | GB1519994A (enExample) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2929166A1 (de) * | 1979-07-19 | 1981-01-29 | Philips Patentverwaltung | Verfahren zur herstellung von lichtleitfasern |
| GB2145742A (en) * | 1983-08-27 | 1985-04-03 | Philips Nv | Method of manufacturing a reaction vessel for crystal growth purposes |
Families Citing this family (61)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51119237A (en) * | 1975-04-11 | 1976-10-19 | Sumitomo Electric Ind Ltd | Manufacturing method of glass fiber for optical communication |
| JPS599490B2 (ja) * | 1975-04-16 | 1984-03-02 | 日本電信電話株式会社 | 光学的繊維の製造方法 |
| DE2642949C3 (de) * | 1976-09-24 | 1980-11-20 | Philips Patentverwaltung Gmbh, 2000 Hamburg | Verfahren zur Herstellung von innenbeschichteten Glasrohren zum Ziehen von Lichtleitfasern |
| CA1080562A (en) * | 1977-02-10 | 1980-07-01 | Frederick D. King | Method of and apparatus for manufacturing an optical fibre with plasma activated deposition in a tube |
| GB1603949A (en) * | 1978-05-30 | 1981-12-02 | Standard Telephones Cables Ltd | Plasma deposit |
| NL7920045A (nl) * | 1978-08-18 | 1980-06-30 | Western Electric Co | Vervaardiging van optische vezels onder toepassing van thermoforetische afzetting van glas voorloper deeltjes. |
| US4422915A (en) | 1979-09-04 | 1983-12-27 | Battelle Memorial Institute | Preparation of colored polymeric film-like coating |
| DE3027450C2 (de) * | 1980-07-19 | 1982-06-03 | Standard Elektrik Lorenz Ag, 7000 Stuttgart | Verfahren zur Innenbeschichtung eines Glas-Substratrohres für die Herstellung eines Glasfaser-Lichtleiters |
| NL8006410A (nl) | 1980-11-25 | 1982-06-16 | Philips Nv | Werkwijze voor de vervaardiging van geintegreerde optische golfgeleider circuits en circuits verkregen met deze werkwijze. |
| NL8102149A (nl) | 1981-05-01 | 1982-12-01 | Philips Nv | Werkwijze en inrichting voor de inwendige bedekking van een buis door reactieve afscheiding uit een gasmengsel onder invloed van een plasma. |
| US4536640A (en) | 1981-07-14 | 1985-08-20 | The Standard Oil Company (Ohio) | High pressure, non-logical thermal equilibrium arc plasma generating apparatus for deposition of coatings upon substrates |
| NL8103648A (nl) * | 1981-08-03 | 1983-03-01 | Philips Nv | Werkwijze voor de vervaardiging van voorvormen voor het trekken van optische vezels en voorvormen volgens deze werkwijze verkregen en inrichting voor het continu vervaardigen van optische vezels. |
| DE3205345A1 (de) | 1982-02-15 | 1983-09-01 | Philips Patentverwaltung Gmbh, 2000 Hamburg | "verfahren zur herstellung von fluordotierten lichtleitfasern" |
| NL8201453A (nl) * | 1982-04-06 | 1983-11-01 | Philips Nv | Werkwijze voor de vervaardiging van optische vezels. |
| DE3222189A1 (de) * | 1982-06-12 | 1984-01-26 | Hans Dr.Rer.Nat. 5370 Kall Beerwald | Plasmaverfahren zur innenbeschichtung von rohren mit dielektrischem material |
| NL8300650A (nl) | 1983-02-22 | 1984-09-17 | Philips Nv | Werkwijze voor het vervaardigen van een massieve voorvorm voor het trekken van optische vezels. |
| NL8302127A (nl) * | 1983-06-15 | 1985-01-02 | Philips Nv | Werkwijze en inrichting voor de vervaardiging van optische vezels. |
| DE3481508D1 (de) * | 1983-07-16 | 1990-04-12 | Philips Patentverwaltung | Verfahren zur herstellung von lichtleitfasern. |
| US4718929A (en) * | 1983-10-21 | 1988-01-12 | Corning Glass Works | Vapor phase method for making metal halide glasses |
| GB8414878D0 (en) * | 1984-06-11 | 1984-07-18 | Gen Electric Co Plc | Integrated optical waveguides |
| DE3445239A1 (de) | 1984-12-12 | 1986-06-19 | Philips Patentverwaltung Gmbh, 2000 Hamburg | Verfahren zur herstellung von lichtleitfasern |
| US4761170A (en) | 1985-06-20 | 1988-08-02 | Polaroid Corporation | Method for employing plasma in dehydration and consolidation of preforms |
| FR2584101B1 (fr) * | 1985-06-26 | 1987-08-07 | Comp Generale Electricite | Dispositif pour fabriquer un composant optique a gradient d'indice de refraction |
| US5188648A (en) * | 1985-07-20 | 1993-02-23 | U.S. Philips Corp. | Method of manufacturing optical fibres |
| DE3626276A1 (de) * | 1986-08-02 | 1988-02-18 | Rheydt Kabelwerk Ag | Verfahren zur herstellung von vorformen fuer lichtleitfasern |
| NL8602910A (nl) * | 1986-11-17 | 1988-06-16 | Philips Nv | Inrichting voor het aanbrengen van glaslagen op de binnenzijde van een buis. |
| DE3720029A1 (de) * | 1987-06-16 | 1988-12-29 | Philips Patentverwaltung | Verfahren zur herstellung von lichtleitfasern |
| DE3720028A1 (de) | 1987-06-16 | 1988-12-29 | Philips Patentverwaltung | Verfahren zur herstellung von lichtleitfasern |
| DE3720030A1 (de) * | 1987-06-16 | 1988-12-29 | Philips Patentverwaltung | Verfahren zur herstellung von lichtleitfasern |
| DE4203369C2 (de) * | 1992-02-06 | 1994-08-11 | Ceramoptec Gmbh | Verfahren und Vorrichtung zur Herstellung von Vorformen für Lichtwellenleiter |
| US6138478A (en) | 1992-09-21 | 2000-10-31 | Ceramoptec Industries, Inc. | Method of forming an optical fiber preform using an E020 plasma field configuration |
| US6542665B2 (en) * | 2001-02-17 | 2003-04-01 | Lucent Technologies Inc. | GRIN fiber lenses |
| US6574994B2 (en) * | 2001-06-18 | 2003-06-10 | Corning Incorporated | Method of manufacturing multi-segmented optical fiber and preform |
| NL1018951C2 (nl) * | 2001-09-13 | 2003-03-14 | Draka Fibre Technology Bv | Werkwijze voor het vervaardigen van een staafvormig vormdeel alsmede een werkwijze voor het uit een dergelijk staafvormig vormdeel vervaardigen van optische vezels. |
| NL1020358C2 (nl) * | 2002-04-10 | 2003-10-13 | Draka Fibre Technology Bv | Werkwijze en inrichting ter vervaardiging van optische voorvormen, alsmede de daarmee verkregen optische vezels. |
| US7351480B2 (en) * | 2002-06-11 | 2008-04-01 | Southwest Research Institute | Tubular structures with coated interior surfaces |
| US6764714B2 (en) | 2002-06-11 | 2004-07-20 | Southwest Research Institute | Method for depositing coatings on the interior surfaces of tubular walls |
| US7052736B2 (en) | 2002-06-11 | 2006-05-30 | Southwest Research Institute | Method for depositing coatings on the interior surfaces of tubular structures |
| US20050281958A1 (en) * | 2004-06-22 | 2005-12-22 | Walton Scott G | Electron beam enhanced nitriding system (EBENS) |
| FR2893149B1 (fr) | 2005-11-10 | 2008-01-11 | Draka Comteq France | Fibre optique monomode. |
| FR2899693B1 (fr) * | 2006-04-10 | 2008-08-22 | Draka Comteq France | Fibre optique monomode. |
| FR2903501B1 (fr) * | 2006-07-04 | 2008-08-22 | Draka Comteq France Sa | Fibre optique dopee au fluor |
| NL1033783C2 (nl) * | 2007-05-01 | 2008-11-06 | Draka Comteq Bv | Inrichting voor het uitvoeren van een plasma chemische dampdepositie alsmede werkwijze ter vervaardiging van een optische voorvorm. |
| US8031997B2 (en) * | 2007-11-09 | 2011-10-04 | Draka Comteq, B.V. | Reduced-diameter, easy-access loose tube cable |
| US8165439B2 (en) * | 2007-11-09 | 2012-04-24 | Draka Comteq, B.V. | ADSS cables with high-performance optical fiber |
| US8041167B2 (en) * | 2007-11-09 | 2011-10-18 | Draka Comteq, B.V. | Optical-fiber loose tube cables |
| CN102099711B (zh) | 2007-11-09 | 2014-05-14 | 德雷卡通信技术公司 | 抗微弯光纤 |
| US8081853B2 (en) * | 2007-11-09 | 2011-12-20 | Draka Comteq, B.V. | Single-fiber drop cables for MDU deployments |
| US8145026B2 (en) * | 2007-11-09 | 2012-03-27 | Draka Comteq, B.V. | Reduced-size flat drop cable |
| US8467650B2 (en) * | 2007-11-09 | 2013-06-18 | Draka Comteq, B.V. | High-fiber-density optical-fiber cable |
| US8041168B2 (en) * | 2007-11-09 | 2011-10-18 | Draka Comteq, B.V. | Reduced-diameter ribbon cables with high-performance optical fiber |
| US8252387B2 (en) * | 2007-12-10 | 2012-08-28 | Ofs Fitel, Llc | Method of fabricating optical fiber using an isothermal, low pressure plasma deposition technique |
| FR2930997B1 (fr) | 2008-05-06 | 2010-08-13 | Draka Comteq France Sa | Fibre optique monomode |
| CN102272635B (zh) | 2008-11-07 | 2017-04-12 | 德拉克通信科技公司 | 直径缩小的光纤 |
| EP2518546B1 (en) | 2011-04-27 | 2018-06-20 | Draka Comteq B.V. | High-bandwidth, radiation-resistant multimode optical fiber |
| ES2438173T3 (es) | 2011-05-27 | 2014-01-16 | Draka Comteq Bv | Fibra óptica de modo único |
| EP2533082B1 (en) | 2011-06-09 | 2013-12-25 | Draka Comteq BV | Single mode optical fiber |
| DK2541292T3 (en) | 2011-07-01 | 2014-12-01 | Draka Comteq Bv | A multimode optical fiber |
| US10295733B2 (en) * | 2013-12-20 | 2019-05-21 | Draka Comteq B.V. | Single mode fibre with a trapezoid core, showing reduced losses |
| NL2017575B1 (en) | 2016-10-04 | 2018-04-13 | Draka Comteq Bv | A method and an apparatus for performing a plasma chemical vapour deposition process and a method |
| WO2019122943A1 (en) | 2017-12-21 | 2019-06-27 | Draka Comteq France | Bending-loss insensitve single mode fibre, with a shallow trench, and corresponding optical system |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA622011A (en) * | 1961-06-13 | G. J. Gunther Gunnar | Producing oxide coatings on glass surfaces | |
| NL6509968A (enExample) * | 1965-07-31 | 1967-02-01 | ||
| US3711262A (en) * | 1970-05-11 | 1973-01-16 | Corning Glass Works | Method of producing optical waveguide fibers |
| US3934061A (en) * | 1972-03-30 | 1976-01-20 | Corning Glass Works | Method of forming planar optical waveguides |
| GB1427327A (en) * | 1972-06-08 | 1976-03-10 | Standard Telephones Cables Ltd | Glass optical fibres |
| JPS4983453A (enExample) * | 1972-12-14 | 1974-08-10 | ||
| US3938974A (en) * | 1973-04-27 | 1976-02-17 | Macedo Pedro B | Method of producing optical wave guide fibers |
| NL165134B (nl) * | 1974-04-24 | 1980-10-15 | Nippon Telegraph & Telephone | Werkwijze voor de vervaardiging van een staaf als tussenprodukt voor de vervaardiging van een optische vezel en werkwijze voor de vervaardiging van een optische vezel uit zulk een tussenprodukt. |
| US3932162A (en) * | 1974-06-21 | 1976-01-13 | Corning Glass Works | Method of making glass optical waveguide |
| US4011006A (en) * | 1974-09-26 | 1977-03-08 | Bell Telephone Laboratories, Incorporated | GeO2 -B2 O3 -SiO2 Optical glass and lightguides |
| US3961926A (en) * | 1974-12-27 | 1976-06-08 | International Telephone And Telegraph Corporation | Preparation of germania cores in optical fibers |
-
1974
- 1974-09-14 DE DE2444100A patent/DE2444100C3/de not_active Expired
-
1975
- 1975-09-11 GB GB37392/75A patent/GB1519994A/en not_active Expired
- 1975-09-11 JP JP10954675A patent/JPS5651138B2/ja not_active Expired
- 1975-09-12 FR FR7528025A patent/FR2284572A1/fr active Granted
-
1979
- 1979-09-28 US US06/079,847 patent/USRE30635E/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2929166A1 (de) * | 1979-07-19 | 1981-01-29 | Philips Patentverwaltung | Verfahren zur herstellung von lichtleitfasern |
| EP0023066B1 (de) * | 1979-07-19 | 1986-04-23 | Philips Patentverwaltung GmbH | Verfahren zur Herstellung von Lichtleitfasern |
| GB2145742A (en) * | 1983-08-27 | 1985-04-03 | Philips Nv | Method of manufacturing a reaction vessel for crystal growth purposes |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2444100A1 (de) | 1976-03-25 |
| GB1519994A (en) | 1978-08-02 |
| JPS5651138B2 (enExample) | 1981-12-03 |
| FR2284572A1 (fr) | 1976-04-09 |
| DE2444100B2 (de) | 1978-08-10 |
| JPS5154446A (enExample) | 1976-05-13 |
| USRE30635E (en) | 1981-06-02 |
| FR2284572B1 (enExample) | 1979-04-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE2444100C3 (de) | Verfahren zur Herstellung von innenbeschichteten Glasrohren zum Ziehen von Lichtleitfasern | |
| DE2434717C2 (de) | Verfahren zur Herstellung eines Glasfaser-Lichtleiters | |
| DE2835326C2 (de) | Verfahren zur Herstellung eines Glas-Rohlings zum Ausziehen zu einer optischen Faser und Herstellung einer optischen Übertragungsfaser | |
| EP0309027B1 (de) | Verfahren zur Herstellung einer Monomode-Lichtleitfaser | |
| DE2313276A1 (de) | Verfahren zur herstellung von optischem glas | |
| DE3445239A1 (de) | Verfahren zur herstellung von lichtleitfasern | |
| DE2929166A1 (de) | Verfahren zur herstellung von lichtleitfasern | |
| DE2507340A1 (de) | Verfahren zum herstellen einer optischen glasfaser-uebertragungsleitung | |
| DE2313249B2 (de) | Verfahren zur herstellung optischer glasrohlinge | |
| DE2642949A1 (de) | Verfahren zur herstellung von innenbeschichteten glasrohren zum ziehen von lichtleitfasern | |
| EP1286926A1 (de) | Verfahren für die herstellung einer optischen faser | |
| DE2804467B2 (de) | Optische Faser mit einer zwischen Kern und Mantel angeordneten, durch chemische Dampfreaktion hergestellten Zwischenschicht, die im wesentlichen den gleichen Brechungsindex hat wie der Mantel, sowie Verfahren zur Herstellung einer derartigen Faser | |
| DE3885184T2 (de) | Ofen zum erwärmen von glaswerkstoffen für optische fasern und verfahren zur herstellung. | |
| DE2922795C2 (de) | Verfahren zur Herstellung von optischen Glasgegenständen, insbesondere optischen Wellenleitern und Vorrichtung zur Herstellung einer optischen Glasvorform | |
| DE3330910A1 (de) | Verfahren zum herstellen eines reaktionsgefaesses fuer kristallzuchtzwecke | |
| WO2009121763A1 (de) | Verfahren zur herstellung von synthetischem quarzglas | |
| DE2721198B2 (de) | Verfahren und Vorrichtung zum Herstellen eines Vorformlings für das Ziehen von Lichtleitfasern | |
| EP0116342B1 (de) | Verfahren zur Herstellung einer glasigen Vorform für Lichtwellenleiter | |
| DE3106389C2 (enExample) | ||
| EP0127227B1 (de) | Verfahren zur Herstellung von optischen Wellenleitern | |
| EP0295745B1 (de) | Verfahren zur Herstellung von Lichtleitfasern | |
| DE2919619A1 (de) | Verfahren zur herstellung von glasfaser-lichtwellenleitern | |
| EP0209945B1 (de) | Verfahren zur Herstellung von Lichtleitfasern | |
| EP0536631B1 (de) | Verfahren zum Herstellen einer Vorform für optische Fasern | |
| DE4209004C2 (de) | Verfahren und Vorrichtung zur Herstellung einer Lichtwellenleiter-Vorform |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C3 | Grant after two publication steps (3rd publication) | ||
| 8339 | Ceased/non-payment of the annual fee |