BR112022008355A2 - Fibra ótica - Google Patents

Fibra ótica

Info

Publication number
BR112022008355A2
BR112022008355A2 BR112022008355A BR112022008355A BR112022008355A2 BR 112022008355 A2 BR112022008355 A2 BR 112022008355A2 BR 112022008355 A BR112022008355 A BR 112022008355A BR 112022008355 A BR112022008355 A BR 112022008355A BR 112022008355 A2 BR112022008355 A2 BR 112022008355A2
Authority
BR
Brazil
Prior art keywords
refractive index
relative
core
radius
pure silica
Prior art date
Application number
BR112022008355A
Other languages
English (en)
Inventor
Kawaguchi Yuki
Hasegawa Takemi
Original Assignee
Sumitomo Electric Industries
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 Sumitomo Electric Industries filed Critical Sumitomo Electric Industries
Publication of BR112022008355A2 publication Critical patent/BR112022008355A2/pt

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
    • G02B6/036—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
    • G02B6/03638—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 3 layers only
    • G02B6/03655—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 3 layers only arranged - + +
    • 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
    • G02B6/0283—Graded index region external to the central core segment, e.g. sloping layer or triangular or trapezoidal layer
    • G02B6/0285—Graded index layer adjacent to the central core segment and ending at the outer cladding index
    • 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
    • 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
    • G02B6/0283—Graded index region external to the central core segment, e.g. sloping layer or triangular or trapezoidal layer
    • 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
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Glass Compositions (AREA)

Abstract

FIBRA ÓTICA. A presente invenção refere-se a uma fibra ótica que inclui um núcleo, um revestimento interno que envolve o núcleo, e um revestimento externo que envolve o revestimento interno. Uma diferença média de índice de refração relativa ?1 do núcleo em relação à sílica pura, uma diferença média de índice de refração relativa ?2 do revestimento interno em relação à sílica pura, e uma diferença média de índice de refração relativa ?3 do revestimento externo em relação à sílica pura satisfazem uma relação de ?1 >?3 =?2. A relação r2/r1 de um raio de revestimento interno r2 para um raio de núcleo r1 é de 4,5 ou superior e 5,5 ou inferior. Um valor mínimo ?mín de uma diferença relativa de índice de refração com respeito à sílica pura é -0,030% ou superior e -0,010% ou inferior. Um raio rmín em que a diferença relativa do índice de refração é o valor mínimo ¿mín satisfaz uma relação de r1 < rmín < r2. (?-? (r1))/(rmín-r1) é -0,002%/µm ou inferior, onde ?(r1) denota a diferença relativa do índice de refração com o raio do núcleo r1.
BR112022008355A 2020-03-17 2021-03-16 Fibra ótica BR112022008355A2 (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2020046648 2020-03-17
PCT/JP2021/010590 WO2021187475A1 (ja) 2020-03-17 2021-03-16 光ファイバ

Publications (1)

Publication Number Publication Date
BR112022008355A2 true BR112022008355A2 (pt) 2022-10-18

Family

ID=77771140

Family Applications (1)

Application Number Title Priority Date Filing Date
BR112022008355A BR112022008355A2 (pt) 2020-03-17 2021-03-16 Fibra ótica

Country Status (7)

Country Link
US (1) US11774672B2 (pt)
EP (1) EP4123350A4 (pt)
JP (1) JPWO2021187475A1 (pt)
KR (1) KR20220144793A (pt)
CN (1) CN114641714A (pt)
BR (1) BR112022008355A2 (pt)
WO (1) WO2021187475A1 (pt)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023042769A1 (ja) * 2021-09-16 2023-03-23 古河電気工業株式会社 光ファイバ

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4127868C2 (de) * 1991-08-22 1994-11-10 Rheydt Kabelwerk Ag Einmoden-Faser mit rampenförmigem Brechzahl-Profil
JP5342614B2 (ja) 2011-08-09 2013-11-13 古河電気工業株式会社 光ファイバ母材および光ファイバの製造方法
JP6306690B2 (ja) 2014-09-26 2018-04-04 株式会社フジクラ 光ファイバ
JP6321589B2 (ja) 2015-07-17 2018-05-09 株式会社フジクラ 光ファイバ
NL2019876B1 (en) 2017-10-20 2019-04-29 Corning Inc Optical fiber preforms with halogen doping
JP2020046648A (ja) 2018-09-20 2020-03-26 摂津化成株式会社 見本帳

Also Published As

Publication number Publication date
JPWO2021187475A1 (pt) 2021-09-23
WO2021187475A1 (ja) 2021-09-23
EP4123350A1 (en) 2023-01-25
US11774672B2 (en) 2023-10-03
US20230037687A1 (en) 2023-02-09
EP4123350A4 (en) 2023-09-13
CN114641714A (zh) 2022-06-17
KR20220144793A (ko) 2022-10-27

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