GB1322992A - Optical waveguides - Google Patents
Optical waveguidesInfo
- Publication number
- GB1322992A GB1322992A GB1332571A GB1332571A GB1322992A GB 1322992 A GB1322992 A GB 1322992A GB 1332571 A GB1332571 A GB 1332571A GB 1332571 A GB1332571 A GB 1332571A GB 1322992 A GB1322992 A GB 1322992A
- Authority
- GB
- United Kingdom
- Prior art keywords
- core
- give
- glass
- amounts
- fused silica
- 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
- 230000003287 optical effect Effects 0.000 title abstract 3
- 239000002019 doping agent Substances 0.000 abstract 5
- 238000005253 cladding Methods 0.000 abstract 4
- 239000011521 glass Substances 0.000 abstract 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 3
- 239000005350 fused silica glass Substances 0.000 abstract 3
- 239000003365 glass fiber Substances 0.000 abstract 3
- 229910018072 Al 2 O 3 Inorganic materials 0.000 abstract 2
- 229910010413 TiO 2 Inorganic materials 0.000 abstract 2
- 238000009792 diffusion process Methods 0.000 abstract 2
- 229910052769 Ytterbium Inorganic materials 0.000 abstract 1
- 229910052782 aluminium Inorganic materials 0.000 abstract 1
- 229910052746 lanthanum Inorganic materials 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 229910052758 niobium Inorganic materials 0.000 abstract 1
- 239000013307 optical fiber Substances 0.000 abstract 1
- 229910052715 tantalum Inorganic materials 0.000 abstract 1
- 229910052718 tin Inorganic materials 0.000 abstract 1
- 229910052719 titanium Inorganic materials 0.000 abstract 1
- 229910052726 zirconium Inorganic materials 0.000 abstract 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
- 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
- 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
- C03B37/02—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor
- C03B37/025—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor from reheated softened tubes, rods, fibres or filaments, e.g. drawing fibres from preforms
- C03B37/027—Fibres composed of different sorts of glass, e.g. glass 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
Landscapes
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Optics & Photonics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- General Physics & Mathematics (AREA)
- Glass Compositions (AREA)
Abstract
1322992 Glass fibres for optical waveguides CORNING GLASS WORKS 5 May 1971 [11 May 1970 15 Sept 1970] 13325/71 Heading C1M Glass fibres for an optical waveguide comprise a cladding layer of pure fused silica or a doped fused silica and a core of doped fused silica, the dopant being in such amount that the index of refraction of the core has a greater value than the index of refraction of the cladding layer. Dopants suggested are of Cs or Rb when diffusion is allowable to give an increasing diameter core or one or more of the following oxides when no diffusion is required: Ti, Ta, Nb, Sn, Al, Zr, Yb and La. Amounts of the dopants preferably up to 15% by weight, but all may be up to 25% except Al 2 O 3 up to 40%, and the maximum TiO 2 20% and for ZrO 2 and Nb 2 O 5 5%. The Figure shows how the amounts may be chosen to give desired refractive indices. When the cladding layer is also doped, the same, but more, dopant may be used for the core, or a different dopant used, the amounts being chosen to give the greater refractive index for the core, and in an example, a larger amount of Al 2 O 3 to a smaller amount of TiO 2 for the core will give the required result. By suitable refractive indices for the glasses used and diameter of the core, the optical fibre can be adjusted to limit light projection to a particular mode. The glass fibres may be made by the conventional drawing down of a rod of core glass surrounded by a tube of cladding glass or the methods of Specification 1,322,993 may be used. Specifications 1,213,603 and 1,113,101 are also referred to.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US3610970A | 1970-05-11 | 1970-05-11 | |
| US7232570A | 1970-09-15 | 1970-09-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1322992A true GB1322992A (en) | 1973-07-11 |
Family
ID=26712804
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1332571A Expired GB1322992A (en) | 1970-05-11 | 1971-05-05 | Optical waveguides |
Country Status (6)
| Country | Link |
|---|---|
| BE (1) | BE766972A (en) |
| CA (1) | CA951555A (en) |
| DE (1) | DE2122896B2 (en) |
| FR (1) | FR2088485B1 (en) |
| GB (1) | GB1322992A (en) |
| NL (1) | NL7106383A (en) |
Families Citing this family (12)
| 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 |
| US3775075A (en) * | 1972-01-03 | 1973-11-27 | Corning Glass Works | Method of forming optical waveguide fibers |
| US3826560A (en) * | 1972-03-30 | 1974-07-30 | Corning Glass Works | Method of forming a light focusing fiber waveguide |
| DE2313202C2 (en) * | 1972-03-30 | 1985-09-05 | Corning Glass Works, Corning, N.Y. | Optical waveguide |
| DE2247307C3 (en) * | 1972-09-27 | 1982-01-21 | Siemens AG, 1000 Berlin und 8000 München | Process for the production of a starting rod for drawing an optical fiber consisting of a doped core and an undoped cladding |
| DE2247425B2 (en) * | 1972-09-27 | 1981-07-16 | Siemens AG, 1000 Berlin und 8000 München | Base material for optical fibers |
| GB1434977A (en) * | 1972-10-13 | 1976-05-12 | Sumitomo Electroc Ind Ltd | Method of manufacturing an optical waveguide |
| JPS4983453A (en) * | 1972-12-14 | 1974-08-10 | ||
| US3884550A (en) * | 1973-01-04 | 1975-05-20 | Corning Glass Works | Germania containing optical waveguide |
| DE2434717C2 (en) | 1973-08-21 | 1989-05-18 | International Standard Electric Corp., 10022 New York, N.Y. | Method of manufacturing a fiber optic light guide |
| US3859073A (en) * | 1973-10-19 | 1975-01-07 | Corning Glass Works | Method of producing glass by flame hydrolysis |
-
1971
- 1971-05-03 CA CA111,960,A patent/CA951555A/en not_active Expired
- 1971-05-05 GB GB1332571A patent/GB1322992A/en not_active Expired
- 1971-05-08 DE DE19712122896 patent/DE2122896B2/en not_active Ceased
- 1971-05-10 NL NL7106383A patent/NL7106383A/xx unknown
- 1971-05-10 FR FR7116813A patent/FR2088485B1/fr not_active Expired
- 1971-05-10 BE BE766972A patent/BE766972A/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| DE2122896B2 (en) | 1977-03-17 |
| FR2088485B1 (en) | 1974-06-21 |
| NL7106383A (en) | 1971-11-15 |
| DE2122896A1 (en) | 1971-12-16 |
| CA951555A (en) | 1974-07-23 |
| FR2088485A1 (en) | 1972-01-07 |
| BE766972A (en) | 1971-11-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLE | Entries relating assignments, transmissions, licences in the register of patents | ||
| 429A | Application made for amendment of specification (sect. 29/1949) | ||
| 429H | Application (made) for amendment of specification now open to opposition (sect. 29/1949) | ||
| PE20 | Patent expired after termination of 20 years |