GB2017956A - Graded-index light guide - Google Patents
Graded-index light guideInfo
- Publication number
- GB2017956A GB2017956A GB7907013A GB7907013A GB2017956A GB 2017956 A GB2017956 A GB 2017956A GB 7907013 A GB7907013 A GB 7907013A GB 7907013 A GB7907013 A GB 7907013A GB 2017956 A GB2017956 A GB 2017956A
- Authority
- GB
- United Kingdom
- Prior art keywords
- core
- lambda
- image
- graded
- light guide
- 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.)
- Granted
Links
- 150000001875 compounds Chemical class 0.000 abstract 2
- 238000007496 glass forming Methods 0.000 abstract 1
- 230000003287 optical effect Effects 0.000 abstract 1
Classifications
-
- 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
- G02B6/0288—Multimode fibre, e.g. graded index core for compensating modal dispersion
-
- 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]
- C03B37/01413—Reactant delivery systems
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2207/00—Glass deposition burners
- C03B2207/80—Feeding the burner or the burner-heated deposition site
- C03B2207/85—Feeding the burner or the burner-heated deposition site with vapour generated from liquid glass precursors, e.g. directly by heating the liquid
- C03B2207/86—Feeding the burner or the burner-heated deposition site with vapour generated from liquid glass precursors, e.g. directly by heating the liquid by bubbling a gas through the liquid
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Chemical & Material Sciences (AREA)
- Optics & Photonics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Dispersion Chemistry (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Glass Compositions (AREA)
Abstract
An optical waveguide for a communication system includes a graded index core formed from at least three glass-forming compounds with a profile having at least two alpha -type index profile terms. The refractive index of the core is nc at the center of the core and varies as a function of the radial distance r from the center of the core substantially as <IMAGE> where alpha i is defined by: <IMAGE> where N >/= 2, DELTA = (nc<2> - no<2>)/2nc<2>, no is the refractive index of said compounds at r = a, Nc = nc- lambda dnc/d lambda where lambda is the wavelength of the light source, and the quantities DELTA i are parameters which can be varied provided the condition <IMAGE> is satisfied.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB7907013A GB2017956B (en) | 1979-02-28 | 1979-02-28 | Graded-index light guide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB7907013A GB2017956B (en) | 1979-02-28 | 1979-02-28 | Graded-index light guide |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB2017956A true GB2017956A (en) | 1979-10-10 |
| GB2017956B GB2017956B (en) | 1982-08-04 |
Family
ID=10503486
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB7907013A Expired GB2017956B (en) | 1979-02-28 | 1979-02-28 | Graded-index light guide |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2017956B (en) |
-
1979
- 1979-02-28 GB GB7907013A patent/GB2017956B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB2017956B (en) | 1982-08-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19930228 |