JPS56101108A - Glass fiber for light transmission - Google Patents

Glass fiber for light transmission

Info

Publication number
JPS56101108A
JPS56101108A JP415580A JP415580A JPS56101108A JP S56101108 A JPS56101108 A JP S56101108A JP 415580 A JP415580 A JP 415580A JP 415580 A JP415580 A JP 415580A JP S56101108 A JPS56101108 A JP S56101108A
Authority
JP
Japan
Prior art keywords
clad layer
glass
refractive index
sio2
core
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
JP415580A
Other languages
Japanese (ja)
Inventor
Koji Okamura
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 JP415580A priority Critical patent/JPS56101108A/en
Publication of JPS56101108A publication Critical patent/JPS56101108A/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
    • G02B6/036—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
    • G02B6/03644—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 - + -

Landscapes

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

Abstract

PURPOSE:To eliminate easily the propagated light in the clad layer, by forming two clad layers and by adding the light absorbent to the outside clad layer and by making the refractive index of the outside clad layer higher than that of the inside clad layer. CONSTITUTION:The second clad layer 23 of the glass having the refractive index higher than that of quartz tube 24 is provided in quartz tube 24, and the first clad layer 22 of the glass having the refractive index higher than that of tube 24 and lower than that of the second clad layer 23 is provided inside the second clad layer 23, and the core of the glass having the highest refractive index is provided inside the first clad layer 22, and the additive which absorbs the introduced undesired transmission light is added into the second clad layer. By this constitution, undesired light beam 28 which does not make the critical angle in the interface between the core and the first clad layer is absorbed into the second clad layer 23. Core 21 is formed with the glass consisting of SiO2 and GeO2, and the first clad layer 22 is formed with the glass consisting of SiO2 and P2O5, and the second clad layer is formed with the glass consisting of SiO2, GeO2 and B2O3.
JP415580A 1980-01-17 1980-01-17 Glass fiber for light transmission Pending JPS56101108A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP415580A JPS56101108A (en) 1980-01-17 1980-01-17 Glass fiber for light transmission

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP415580A JPS56101108A (en) 1980-01-17 1980-01-17 Glass fiber for light transmission

Publications (1)

Publication Number Publication Date
JPS56101108A true JPS56101108A (en) 1981-08-13

Family

ID=11576856

Family Applications (1)

Application Number Title Priority Date Filing Date
JP415580A Pending JPS56101108A (en) 1980-01-17 1980-01-17 Glass fiber for light transmission

Country Status (1)

Country Link
JP (1) JPS56101108A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5869805U (en) * 1981-11-03 1983-05-12 大昌電気工業株式会社 plastic optical fiber
JPS62156605A (en) * 1985-12-27 1987-07-11 Sumitomo Electric Ind Ltd Optical fiber strand
JPH01282507A (en) * 1988-05-09 1989-11-14 Sumitomo Electric Ind Ltd Optical fiber
WO2000011497A1 (en) * 1998-08-25 2000-03-02 Quante Ag Plastic optical fiber
US6351588B1 (en) * 1999-09-17 2002-02-26 Vikram Bhatia Fiber Bragg grating with cladding mode suppression
US7215860B2 (en) * 2005-05-02 2007-05-08 Lucent Technologies Inc. Optical transmission fiber with a glass guiding cladding

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5869805U (en) * 1981-11-03 1983-05-12 大昌電気工業株式会社 plastic optical fiber
JPS62156605A (en) * 1985-12-27 1987-07-11 Sumitomo Electric Ind Ltd Optical fiber strand
JPH01282507A (en) * 1988-05-09 1989-11-14 Sumitomo Electric Ind Ltd Optical fiber
WO2000011497A1 (en) * 1998-08-25 2000-03-02 Quante Ag Plastic optical fiber
US6501894B2 (en) 1998-08-25 2002-12-31 Wolfgang Dultz Plastic optical fiber
US6351588B1 (en) * 1999-09-17 2002-02-26 Vikram Bhatia Fiber Bragg grating with cladding mode suppression
US7215860B2 (en) * 2005-05-02 2007-05-08 Lucent Technologies Inc. Optical transmission fiber with a glass guiding cladding

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