JPS5720707A - Single mode optical fiber with groove having different refractive index - Google Patents
Single mode optical fiber with groove having different refractive indexInfo
- Publication number
- JPS5720707A JPS5720707A JP9595680A JP9595680A JPS5720707A JP S5720707 A JPS5720707 A JP S5720707A JP 9595680 A JP9595680 A JP 9595680A JP 9595680 A JP9595680 A JP 9595680A JP S5720707 A JPS5720707 A JP S5720707A
- Authority
- JP
- Japan
- Prior art keywords
- refractive index
- clad
- core
- optical fiber
- groove
- 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
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
- G02B6/02214—Optical fibres with cladding with or without a coating tailored to obtain the desired dispersion, e.g. dispersion shifted, dispersion flattened
- G02B6/02219—Characterised by the wavelength dispersion properties in the silica low loss window around 1550 nm, i.e. S, C, L and U bands from 1460-1675 nm
- G02B6/02228—Dispersion flattened fibres, i.e. having a low dispersion variation over an extended wavelength range
-
- 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
- G02B6/036—Optical fibres with cladding with or without a coating core or cladding comprising multiple layers
- G02B6/03605—Highest refractive index not on central axis
- G02B6/03611—Highest index adjacent to central axis region, e.g. annular core, coaxial ring, centreline depression affecting waveguiding
-
- 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
- G02B6/036—Optical fibres with cladding with or without a coating core or cladding comprising multiple layers
- G02B6/03616—Optical fibres characterised both by the number of different refractive index layers around the central core segment, i.e. around the innermost high index core layer, and their relative refractive index difference
- G02B6/03622—Optical fibres characterised both by the number of different refractive index layers around the central core segment, i.e. around the innermost high index core layer, and their relative refractive index difference having 2 layers only
- G02B6/03627—Optical fibres characterised both by the number of different refractive index layers around the central core segment, i.e. around the innermost high index core layer, and their relative refractive index difference having 2 layers only arranged - +
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
- Glass Compositions (AREA)
Abstract
PURPOSE:To reduce the leakage of light and to decrease the bending and micropending loss by attaching a concentric layer with lower refractive index than that of the core of an optical fiber and a clad between the core and clad. CONSTITUTION:A concentric intermediate layer 3 whose essential component is quartz with lower refractive index than that of a core 1 whose essential component is quartz glass and a clad 2 is fitted between the core 1 and clad 2. After separating a silicon dioxide film including about 1mol% fluorine on the inner surface of a quartz glass tube whose outer diameter is 14mm. and inner diameter is 12mm. by vaper phase reaction and moreover separating a film including about 5mol% germanium dioxide on the inner surface of the silicon dioxide film, these films are heated at 1,700 deg.C and wire-drawn at 2,000 deg.C to obtain a single mode optical fiber with a groove having a different refractive index. Thus, light leakage is reduced and bending loss and micropending loss are decreased.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55095956A JPS6023321B2 (en) | 1980-07-14 | 1980-07-14 | Index grooved single mode optical fiber |
CA361,298A CA1124119A (en) | 1979-10-08 | 1980-10-01 | Single mode optical fibers |
US06/192,704 US4372647A (en) | 1979-10-08 | 1980-10-01 | Single mode optical fibers |
EP80106090A EP0026937B1 (en) | 1979-10-08 | 1980-10-07 | Single mode optical fibers |
DE8080106090T DE3071570D1 (en) | 1979-10-08 | 1980-10-07 | Single mode optical fibers |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55095956A JPS6023321B2 (en) | 1980-07-14 | 1980-07-14 | Index grooved single mode optical fiber |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5720707A true JPS5720707A (en) | 1982-02-03 |
JPS6023321B2 JPS6023321B2 (en) | 1985-06-07 |
Family
ID=14151686
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP55095956A Expired JPS6023321B2 (en) | 1979-10-08 | 1980-07-14 | Index grooved single mode optical fiber |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6023321B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010044426A (en) * | 1999-01-04 | 2010-02-25 | Alcatel-Lucent | Optical fiber with low slope of wavelength dispersion |
WO2013099555A1 (en) * | 2011-12-28 | 2013-07-04 | 住友電気工業株式会社 | Multicore optical fiber |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6359239U (en) * | 1986-10-08 | 1988-04-20 | ||
JPS63152941U (en) * | 1987-03-27 | 1988-10-06 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5525643A (en) * | 1978-08-11 | 1980-02-23 | Mitsubishi Heavy Ind Ltd | Method of carrying article |
JPS5652706A (en) * | 1979-10-08 | 1981-05-12 | Nippon Telegr & Teleph Corp <Ntt> | Single mode optical fiber with intermediate layer |
-
1980
- 1980-07-14 JP JP55095956A patent/JPS6023321B2/en not_active Expired
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5525643A (en) * | 1978-08-11 | 1980-02-23 | Mitsubishi Heavy Ind Ltd | Method of carrying article |
JPS5652706A (en) * | 1979-10-08 | 1981-05-12 | Nippon Telegr & Teleph Corp <Ntt> | Single mode optical fiber with intermediate layer |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010044426A (en) * | 1999-01-04 | 2010-02-25 | Alcatel-Lucent | Optical fiber with low slope of wavelength dispersion |
WO2013099555A1 (en) * | 2011-12-28 | 2013-07-04 | 住友電気工業株式会社 | Multicore optical fiber |
JP2013137430A (en) * | 2011-12-28 | 2013-07-11 | Sumitomo Electric Ind Ltd | Multi-core optical fiber |
US9547122B2 (en) | 2011-12-28 | 2017-01-17 | Sumitomo Electric Industries, Ltd. | Multi-core optical fiber |
Also Published As
Publication number | Publication date |
---|---|
JPS6023321B2 (en) | 1985-06-07 |
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