JPS5465554A - Combined wide band optical fiber - Google Patents

Combined wide band optical fiber

Info

Publication number
JPS5465554A
JPS5465554A JP13146277A JP13146277A JPS5465554A JP S5465554 A JPS5465554 A JP S5465554A JP 13146277 A JP13146277 A JP 13146277A JP 13146277 A JP13146277 A JP 13146277A JP S5465554 A JPS5465554 A JP S5465554A
Authority
JP
Japan
Prior art keywords
core
optical fiber
central part
wide band
refractive indices
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.)
Pending
Application number
JP13146277A
Other languages
Japanese (ja)
Inventor
Eizo Miyauchi
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.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP13146277A priority Critical patent/JPS5465554A/en
Publication of JPS5465554A publication Critical patent/JPS5465554A/en
Pending 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
    • G02B6/0281—Graded index region forming part of the central core segment, e.g. alpha profile, triangular, trapezoidal core
    • 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
    • G02B6/036—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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)

Abstract

PURPOSE: To achieve the stabilization of transmission performance and make possible double transmission by forming the optical fiber in the double construction wherein an optical fiber is internally provided in the core having been removed of the central part which becomes of anomalous refractive indices.
CONSTITUTION: The central part of the core 9 of a wide band GI optical fiber 7 formed by a clad 8 and a core 9 which becomes of anomalous refractive indices owing to its defective heterogeneity is removed. If an SM optical fiber 10 formed by a clad layer 11 of a thickness (t) and a core 12 of a radius S is internally provided in the removed central part and the conditions of the formula (5) are satisfied, then the transmission loss owing to leaking of light out to the layer 11 may be reduced and the light transmitted in th core 12, thus this together with the core 10 which has been removed of the defective central part cause the double transmission of light to be accomplished stably. Here, nc: refractive indices of the clads 8, 11; ns: the refractive index of the core 12.
COPYRIGHT: (C)1979,JPO&Japio
JP13146277A 1977-11-04 1977-11-04 Combined wide band optical fiber Pending JPS5465554A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13146277A JPS5465554A (en) 1977-11-04 1977-11-04 Combined wide band optical fiber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13146277A JPS5465554A (en) 1977-11-04 1977-11-04 Combined wide band optical fiber

Publications (1)

Publication Number Publication Date
JPS5465554A true JPS5465554A (en) 1979-05-26

Family

ID=15058516

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13146277A Pending JPS5465554A (en) 1977-11-04 1977-11-04 Combined wide band optical fiber

Country Status (1)

Country Link
JP (1) JPS5465554A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56102809A (en) * 1980-01-22 1981-08-17 Nippon Telegr & Teleph Corp <Ntt> Double structure optical fiber

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56102809A (en) * 1980-01-22 1981-08-17 Nippon Telegr & Teleph Corp <Ntt> Double structure optical fiber

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