JPS5737304A - Optical fiber - Google Patents

Optical fiber

Info

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
Application number
JP11159980A
Other languages
Japanese (ja)
Other versions
JPS586923B2 (en
Inventor
Kenichi Kitayama
Yasuyuki Kato
Yoshiyuki Aomi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP55111599A priority Critical patent/JPS586923B2/en
Publication of JPS5737304A publication Critical patent/JPS5737304A/en
Publication of JPS586923B2 publication Critical patent/JPS586923B2/en
Expired legal-status Critical Current

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.
JP55111599A 1980-08-15 1980-08-15 optical fiber Expired JPS586923B2 (en)

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)

* Cited by examiner, † Cited by third party
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.

Cited By (5)

* Cited by examiner, † Cited by third party
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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