JPS5737304A - Optical fiber - Google Patents
Optical fiberInfo
- Publication number
- JPS5737304A JPS5737304A JP11159980A JP11159980A JPS5737304A JP S5737304 A JPS5737304 A JP S5737304A JP 11159980 A JP11159980 A JP 11159980A JP 11159980 A JP11159980 A JP 11159980A JP S5737304 A JPS5737304 A JP S5737304A
- Authority
- JP
- Japan
- Prior art keywords
- core
- refractive index
- order mode
- lambda
- 2delta
- 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
- G02B6/028—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
Landscapes
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
- Waveguides (AREA)
Abstract
PURPOSE:To obtain an extremely wide transmission band by setting a refractive index distribution within a specific range and so selecting standardization frequency that the group delay times of the lowest order mode and the 2nd high order mode groups are made roughly equal with respect to the used wavelength. CONSTITUTION:When the radius of a core is defined as (a), the refractive index of the core center as n1, the refractive index of clad as n2, the specific refractive index difference between the core and clad as DELTA, the distance in a radial direction from the core center as (r), the refractive index distribution in the core as n(r)= n1[1-2DELTA(r/2)alpha]1/2, the wavelength used as lambda, and standardization frequency as v=2pi/lambda.n12(2DELTA)1/2, the alpha is set at 2.3-3.1 and the (v) value is so selected that the group delay times of the lowest order mode and 2nd high order mode groups are made roughly equal with respect to the used wavelength lambda. Therefore, an extremely wide transmission band is obtained, the core diameter is enlarged to more than twice as compared to conventional single mode optical fibers, and the joining with a light source is made easy.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55111599A JPS586923B2 (en) | 1980-08-15 | 1980-08-15 | optical fiber |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55111599A JPS586923B2 (en) | 1980-08-15 | 1980-08-15 | optical fiber |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5737304A true JPS5737304A (en) | 1982-03-01 |
JPS586923B2 JPS586923B2 (en) | 1983-02-07 |
Family
ID=14565433
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP55111599A Expired JPS586923B2 (en) | 1980-08-15 | 1980-08-15 | optical fiber |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS586923B2 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012063697A (en) * | 2010-09-17 | 2012-03-29 | Nippon Telegr & Teleph Corp <Ntt> | Multi-mode fiber and design method thereof |
JP2012063698A (en) * | 2010-09-17 | 2012-03-29 | Nippon Telegr & Teleph Corp <Ntt> | Multi-mode fiber |
EP2756339A1 (en) * | 2011-09-16 | 2014-07-23 | Corning Incorporated | Few mode optical fibers for mode division multiplexing |
JP2015033333A (en) * | 2013-08-07 | 2015-02-19 | クラシエフーズ株式会社 | High-stretchabillity chewing gum and combination chewing gum using the same |
JP2015529848A (en) * | 2012-08-02 | 2015-10-08 | コーニング インコーポレイテッド | Minority mode optical fiber for mode division multiplexing. |
-
1980
- 1980-08-15 JP JP55111599A patent/JPS586923B2/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012063697A (en) * | 2010-09-17 | 2012-03-29 | Nippon Telegr & Teleph Corp <Ntt> | Multi-mode fiber and design method thereof |
JP2012063698A (en) * | 2010-09-17 | 2012-03-29 | Nippon Telegr & Teleph Corp <Ntt> | Multi-mode fiber |
EP2756339A1 (en) * | 2011-09-16 | 2014-07-23 | Corning Incorporated | Few mode optical fibers for mode division multiplexing |
JP2015529848A (en) * | 2012-08-02 | 2015-10-08 | コーニング インコーポレイテッド | Minority mode optical fiber for mode division multiplexing. |
JP2015033333A (en) * | 2013-08-07 | 2015-02-19 | クラシエフーズ株式会社 | High-stretchabillity chewing gum and combination chewing gum using the same |
Also Published As
Publication number | Publication date |
---|---|
JPS586923B2 (en) | 1983-02-07 |
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