NO843957L - Fremgangsmaate for fremstilling av laminert enkeltpolarisasjonsfiber - Google Patents
Fremgangsmaate for fremstilling av laminert enkeltpolarisasjonsfiberInfo
- Publication number
- NO843957L NO843957L NO843957A NO843957A NO843957L NO 843957 L NO843957 L NO 843957L NO 843957 A NO843957 A NO 843957A NO 843957 A NO843957 A NO 843957A NO 843957 L NO843957 L NO 843957L
- Authority
- NO
- Norway
- Prior art keywords
- soot
- substrate
- glass
- layers
- core
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 23
- 239000000835 fiber Substances 0.000 title description 26
- 230000010287 polarization Effects 0.000 title description 8
- 239000004071 soot Substances 0.000 claims abstract description 91
- 239000000758 substrate Substances 0.000 claims abstract description 64
- 239000011521 glass Substances 0.000 claims abstract description 55
- 239000000203 mixture Substances 0.000 claims abstract description 31
- 238000005253 cladding Methods 0.000 claims abstract description 27
- 239000013307 optical fiber Substances 0.000 claims abstract description 14
- 239000005340 laminated glass Substances 0.000 claims abstract description 4
- 238000000576 coating method Methods 0.000 claims description 49
- 239000011248 coating agent Substances 0.000 claims description 34
- 238000000151 deposition Methods 0.000 claims description 15
- 238000007596 consolidation process Methods 0.000 claims description 13
- 239000002131 composite material Substances 0.000 claims description 10
- 239000006121 base glass Substances 0.000 claims description 4
- 239000002019 doping agent Substances 0.000 claims description 4
- 238000005245 sintering Methods 0.000 claims 1
- 239000010410 layer Substances 0.000 description 59
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 16
- 239000000463 material Substances 0.000 description 9
- 239000012792 core layer Substances 0.000 description 8
- 230000008021 deposition Effects 0.000 description 8
- 230000003287 optical effect Effects 0.000 description 8
- 235000012239 silicon dioxide Nutrition 0.000 description 8
- 239000000377 silicon dioxide Substances 0.000 description 8
- 238000001035 drying Methods 0.000 description 7
- 238000000227 grinding Methods 0.000 description 7
- 239000002245 particle Substances 0.000 description 7
- 230000007062 hydrolysis Effects 0.000 description 5
- 238000006460 hydrolysis reaction Methods 0.000 description 5
- 239000006229 carbon black Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005530 etching Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 238000005229 chemical vapour deposition Methods 0.000 description 3
- 229910052681 coesite Inorganic materials 0.000 description 3
- 229910052906 cristobalite Inorganic materials 0.000 description 3
- 239000005373 porous glass Substances 0.000 description 3
- 229910052682 stishovite Inorganic materials 0.000 description 3
- 229910052905 tridymite Inorganic materials 0.000 description 3
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 229910003460 diamond Inorganic materials 0.000 description 2
- 239000010432 diamond Substances 0.000 description 2
- YBMRDBCBODYGJE-UHFFFAOYSA-N germanium dioxide Chemical compound O=[Ge]=O YBMRDBCBODYGJE-UHFFFAOYSA-N 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- MRELNEQAGSRDBK-UHFFFAOYSA-N lanthanum(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[La+3].[La+3] MRELNEQAGSRDBK-UHFFFAOYSA-N 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 230000001902 propagating effect Effects 0.000 description 2
- 239000000376 reactant Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000002999 depolarising effect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- -1 e.g. chlorine Chemical class 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000005283 halide glass Substances 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 229910001507 metal halide Inorganic materials 0.000 description 1
- 150000005309 metal halides Chemical class 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 229910000484 niobium oxide Inorganic materials 0.000 description 1
- URLJKFSTXLNXLG-UHFFFAOYSA-N niobium(5+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Nb+5].[Nb+5] URLJKFSTXLNXLG-UHFFFAOYSA-N 0.000 description 1
- 239000005304 optical glass Substances 0.000 description 1
- 230000001151 other effect Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- BPUBBGLMJRNUCC-UHFFFAOYSA-N oxygen(2-);tantalum(5+) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Ta+5].[Ta+5] BPUBBGLMJRNUCC-UHFFFAOYSA-N 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 229910001936 tantalum oxide Inorganic materials 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 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
- C03B37/10—Non-chemical treatment
- C03B37/12—Non-chemical treatment of fibres or filaments during winding up
-
- 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]
- C03B37/01486—Means for supporting, rotating or translating the preforms being formed, e.g. lathes
- C03B37/01493—Deposition substrates, e.g. targets, mandrels, start rods or tubes
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B19/00—Other methods of shaping glass
- C03B19/14—Other methods of shaping glass by gas- or vapour- phase reaction processes
-
- 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]
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2203/00—Fibre product details, e.g. structure, shape
- C03B2203/10—Internal structure or shape details
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2203/00—Fibre product details, e.g. structure, shape
- C03B2203/10—Internal structure or shape details
- C03B2203/22—Radial profile of refractive index, composition or softening point
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2203/00—Fibre product details, e.g. structure, shape
- C03B2203/30—Polarisation maintaining [PM], i.e. birefringent products, e.g. with elliptical core, by use of stress rods, "PANDA" type fibres
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- General Chemical & Material Sciences (AREA)
- Surface Treatment Of Glass Fibres Or Filaments (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Manufacture, Treatment Of Glass Fibers (AREA)
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
- Surface Treatment Of Glass (AREA)
- Glass Compositions (AREA)
- Optical Integrated Circuits (AREA)
- Paper (AREA)
- Mechanical Coupling Of Light Guides (AREA)
- Feeding And Controlling Fuel (AREA)
- Polarising Elements (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/538,325 US4494968A (en) | 1983-10-03 | 1983-10-03 | Method of forming laminated single polarization fiber |
Publications (1)
Publication Number | Publication Date |
---|---|
NO843957L true NO843957L (no) | 1985-04-09 |
Family
ID=24146448
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO843957A NO843957L (no) | 1983-10-03 | 1984-10-02 | Fremgangsmaate for fremstilling av laminert enkeltpolarisasjonsfiber |
Country Status (16)
Country | Link |
---|---|
US (1) | US4494968A (pt) |
EP (1) | EP0138512B1 (pt) |
JP (1) | JPS6090848A (pt) |
KR (1) | KR850003365A (pt) |
AT (1) | ATE31186T1 (pt) |
AU (1) | AU3355084A (pt) |
BR (1) | BR8403793A (pt) |
CA (1) | CA1205634A (pt) |
DE (1) | DE3467890D1 (pt) |
DK (1) | DK472484A (pt) |
ES (1) | ES8605907A1 (pt) |
FI (1) | FI843867L (pt) |
HK (1) | HK59388A (pt) |
IL (1) | IL72843A0 (pt) |
NO (1) | NO843957L (pt) |
SG (1) | SG30088G (pt) |
Families Citing this family (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB8414878D0 (en) * | 1984-06-11 | 1984-07-18 | Gen Electric Co Plc | Integrated optical waveguides |
US4997282A (en) * | 1986-09-19 | 1991-03-05 | Litton Systems, Inc. | Dual fiber optic gyroscope |
US4810276A (en) * | 1987-08-05 | 1989-03-07 | Corning Glass Works | Forming optical fiber having abrupt index change |
TW263566B (pt) * | 1993-01-14 | 1995-11-21 | Sumitomo Electric Industries | |
DE4432806C1 (de) * | 1994-09-15 | 1996-01-18 | Heraeus Quarzglas | Vorrichtung zum Halten von Hohlzylindern aus Kieselsäurepartikeln |
WO2002032588A1 (en) * | 2000-10-17 | 2002-04-25 | Neophotonics Corporation | Coating formation by reactive deposition |
JP3299700B2 (ja) * | 1997-10-22 | 2002-07-08 | 日本発条株式会社 | 光導波路の製造方法 |
US6151336A (en) * | 1998-02-11 | 2000-11-21 | Sorrento Networks, Inc. | Time division multiplexing expansion subsystem |
US6400478B1 (en) | 1998-04-02 | 2002-06-04 | Sorrento Networks, Inc. | Wavelength-division-multiplexed optical transmission system with expanded bidirectional transmission capacity over a single fiber |
US6298103B1 (en) | 1998-06-16 | 2001-10-02 | Sorrento Networks Corporation | Flexible clock and data recovery module for a DWDM optical communication system with multiple clock rates |
DE19848083C2 (de) * | 1998-10-19 | 2001-02-01 | Fraunhofer Ges Forschung | Verfahren zur Herstellung von Interferenzschichtfolgen, System aus übereinander liegenden Interferenzschichtfolgen sowie Interferenzschichtfolge |
CA2427103A1 (en) * | 2000-10-26 | 2002-06-06 | Neophotonics Corporation | Multilayered optical structures |
US20030070452A1 (en) * | 2001-10-12 | 2003-04-17 | Alcatel | Process for online spheroidization of quartz and silica particles |
US7290407B1 (en) * | 2001-12-19 | 2007-11-06 | Jesse Chienhua Shan | Triangle-shaped planar optical waveguide having reduced scattering loss |
EP1660413B1 (en) * | 2003-06-30 | 2011-03-23 | Prysmian S.p.A. | Method and apparatus for drilling preforms for holey optical fibers |
US7930905B2 (en) * | 2004-10-08 | 2011-04-26 | Asi/Silica Machinery, Llc | Methods for manufacturing low water peak optical waveguide incorporating a porous core mandrel |
US7587110B2 (en) * | 2005-03-22 | 2009-09-08 | Panasonic Corporation | Multicore optical fiber with integral diffractive elements machined by ultrafast laser direct writing |
US7805039B2 (en) * | 2007-05-04 | 2010-09-28 | Weatherford/Lamb, Inc. | Single mode optical fiber with improved bend performance |
US7677058B2 (en) * | 2007-05-07 | 2010-03-16 | Corning Incorporated | Process and apparatus for making glass sheet |
US8254017B2 (en) * | 2009-03-19 | 2012-08-28 | Northrop Grumman Systems Corporation | Optical fiber amplifier and methods of making the same |
US8438876B2 (en) * | 2010-03-29 | 2013-05-14 | Corning Incorporated | Method and apparatus for removing glass soot sheet from substrate |
US9199870B2 (en) | 2012-05-22 | 2015-12-01 | Corning Incorporated | Electrostatic method and apparatus to form low-particulate defect thin glass sheets |
US10570048B2 (en) * | 2015-02-13 | 2020-02-25 | Corning Incorporated | Silica-containing sheet and related system and methods |
US20160257612A1 (en) * | 2015-03-04 | 2016-09-08 | Corning Incorporated | Coating of bait substrates for optical fiber making |
US9422187B1 (en) | 2015-08-21 | 2016-08-23 | Corning Incorporated | Laser sintering system and method for forming high purity, low roughness silica glass |
MX2022010462A (es) * | 2020-02-25 | 2022-12-13 | Biolitec Unternehmensbeteiligungs Ii Ag | Preformas para fibras ópticas de salida libre de manchas de luz brillantes que tienen secciones de sílice estructurada, métodos de fabricación de tales preformas, y fibras ópticas de salida libre de manchas de luz brillantes mejoradas. |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3934061A (en) * | 1972-03-30 | 1976-01-20 | Corning Glass Works | Method of forming planar optical waveguides |
US3982916A (en) * | 1975-12-24 | 1976-09-28 | Bell Telephone Laboratories, Incorporated | Method for forming optical fiber preform |
US3980459A (en) * | 1975-12-24 | 1976-09-14 | Bell Telephone Laboratories, Incorporated | Method for manufacturing optical fibers having eccentric longitudinal index inhomogeneity |
US4243398A (en) * | 1978-02-09 | 1981-01-06 | Nippon Electric Co., Ltd. | Method of producing dielectric diffraction gratings or dielectric multilayer interference filters |
US4265515A (en) * | 1978-05-08 | 1981-05-05 | International Telephone And Telegraph Corporation | Optical fiber waveguide with effective refractive index profile |
US4251251A (en) * | 1979-05-31 | 1981-02-17 | Corning Glass Works | Method of making optical devices |
GB2067781B (en) * | 1979-10-29 | 1983-09-01 | Standard Telephones Cables Ltd | Optical fibres |
US4360371A (en) * | 1981-03-30 | 1982-11-23 | Corning Glass Works | Method of making polarization retaining single-mode optical waveguide |
US4415230A (en) * | 1981-03-30 | 1983-11-15 | Corning Glass Works | Polarization retaining single-mode optical waveguide |
US4395270A (en) * | 1981-04-13 | 1983-07-26 | Corning Glass Works | Method of fabricating a polarization retaining single-mode optical waveguide |
US4549781A (en) * | 1983-06-01 | 1985-10-29 | Corning Glass Works | Polarization-retaining single-mode optical waveguide |
-
1983
- 1983-10-03 US US06/538,325 patent/US4494968A/en not_active Expired - Fee Related
-
1984
- 1984-05-01 CA CA000453217A patent/CA1205634A/en not_active Expired
- 1984-07-30 BR BR8403793A patent/BR8403793A/pt unknown
- 1984-09-02 IL IL72843A patent/IL72843A0/xx unknown
- 1984-09-26 JP JP59199706A patent/JPS6090848A/ja active Pending
- 1984-09-26 AU AU33550/84A patent/AU3355084A/en not_active Abandoned
- 1984-10-02 DK DK472484A patent/DK472484A/da not_active Application Discontinuation
- 1984-10-02 NO NO843957A patent/NO843957L/no unknown
- 1984-10-02 FI FI843867A patent/FI843867L/fi not_active Application Discontinuation
- 1984-10-02 KR KR1019840006087A patent/KR850003365A/ko not_active Application Discontinuation
- 1984-10-03 DE DE8484306749T patent/DE3467890D1/de not_active Expired
- 1984-10-03 AT AT84306749T patent/ATE31186T1/de not_active IP Right Cessation
- 1984-10-03 EP EP84306749A patent/EP0138512B1/en not_active Expired
- 1984-10-03 ES ES536496A patent/ES8605907A1/es not_active Expired
-
1988
- 1988-05-07 SG SG300/88A patent/SG30088G/en unknown
- 1988-08-04 HK HK593/88A patent/HK59388A/xx unknown
Also Published As
Publication number | Publication date |
---|---|
US4494968A (en) | 1985-01-22 |
IL72843A0 (en) | 1984-12-31 |
EP0138512B1 (en) | 1987-12-02 |
ES8605907A1 (es) | 1986-04-01 |
DK472484A (da) | 1985-04-04 |
DE3467890D1 (en) | 1988-01-14 |
HK59388A (en) | 1988-08-12 |
BR8403793A (pt) | 1985-07-09 |
EP0138512A1 (en) | 1985-04-24 |
ES536496A0 (es) | 1986-04-01 |
JPS6090848A (ja) | 1985-05-22 |
ATE31186T1 (de) | 1987-12-15 |
DK472484D0 (da) | 1984-10-02 |
KR850003365A (ko) | 1985-06-17 |
FI843867L (fi) | 1985-04-04 |
SG30088G (en) | 1988-09-30 |
FI843867A0 (fi) | 1984-10-02 |
CA1205634A (en) | 1986-06-10 |
AU3355084A (en) | 1985-04-18 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
NO843957L (no) | Fremgangsmaate for fremstilling av laminert enkeltpolarisasjonsfiber | |
US4157906A (en) | Method of drawing glass optical waveguides | |
US4243298A (en) | High-strength optical preforms and fibers with thin, high-compression outer layers | |
CA1278685C (en) | Method of making polarization preserving optical fiber | |
US4251251A (en) | Method of making optical devices | |
US4415230A (en) | Polarization retaining single-mode optical waveguide | |
US3932162A (en) | Method of making glass optical waveguide | |
US4578097A (en) | Method of forming a polarization preserving optical waveguide | |
US4478489A (en) | Polarization retaining single-mode optical waveguide | |
US4165223A (en) | Method of making dry optical waveguides | |
EP0061901B1 (en) | Optical waveguide fiber, and methods of forming an optical waveguide fiber, and an optical waveguide preform | |
NO161730B (no) | Fremgangsmaate for fremstilling av en gjenstand av glass, hvorav i det minste en del er dopet med fluor. | |
US4360371A (en) | Method of making polarization retaining single-mode optical waveguide | |
CN1849270B (zh) | 光纤预制件的制造方法、光纤的制造方法以及光纤 | |
NO792483L (no) | Optisk boelgeleder med stor baandbredde samt fremstillingsmaate for samme | |
NO153050B (no) | Fremgangsmaate til i det vesentlige kontinuerlig aa fremstille et optisk boelgelederemne og en optisk boelgeleder | |
KR20090127300A (ko) | 고형화에서의 광섬유 캐인/프리폼 변형의 저감 | |
US4351658A (en) | Manufacture of optical fibers | |
US4494969A (en) | Method of forming laminated single polarization fiber | |
US4549891A (en) | Method for forming a non-symmetrical optical fiber | |
US4784465A (en) | Method of making glass optical fiber | |
GB1596088A (en) | Method of making glass articles | |
JP2618260B2 (ja) | 光ファイバ母材用中間体の製造方法 | |
Nagel et al. | Compound‐Glass Waveguides Fabricated by a Metal Evaporation Technique | |
JPS6054935A (ja) | 光ファイバ用プリフォ−ムロッドの製造方法 |