JPS57161803A - Primary coat structure of optical fiber - Google Patents

Primary coat structure of optical fiber

Info

Publication number
JPS57161803A
JPS57161803A JP56047462A JP4746281A JPS57161803A JP S57161803 A JPS57161803 A JP S57161803A JP 56047462 A JP56047462 A JP 56047462A JP 4746281 A JP4746281 A JP 4746281A JP S57161803 A JPS57161803 A JP S57161803A
Authority
JP
Japan
Prior art keywords
resin
layer
optical fiber
primary coat
cushiony
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
JP56047462A
Other languages
Japanese (ja)
Other versions
JPH0370204B2 (en
Inventor
Tadao Arima
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 JP56047462A priority Critical patent/JPS57161803A/en
Publication of JPS57161803A publication Critical patent/JPS57161803A/en
Publication of JPH0370204B2 publication Critical patent/JPH0370204B2/ja
Granted 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
    • G02B6/02395—Glass optical fibre with a protective coating, e.g. two layer polymer coating deposited directly on a silica cladding surface during fibre manufacture
    • 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
    • G02B6/03627—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 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
    • G02B6/036—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
    • 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
    • G02B6/03694—Multiple layers differing in properties other than the refractive index, e.g. attenuation, diffusion, stress properties

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
  • Surface Treatment Of Glass Fibres Or Filaments (AREA)

Abstract

PURPOSE:To prevent transmission loss and variation in characteristics of a transmission band, etc., due to the microbending of an optical fiber, by interposing an intermediate layer of high-hardness resin between the internal layer of resin having a high refractive index and the external layer of cushiony resin. CONSTITUTION:An optical fiber 1 is provided with a primary coat 3 of double- layered structure consisting of an internal layer 31 of resin having a high refractive index and an external layer 33 of cushiony resin, and an intermediate layer 33 of resin having high hardness is interposed between the internal layer 31 and external layer 33 of the primary coat 3. For example, the optical fiber 1 compoed of a core and a clad is provided with the about 10mum thickness internal layer 21 made of silicone resin which has a higher refractive index than the clad material and has the property of peeling, and inside of it, the external layer 33 made of cushiony silicone resin is formed while an intermediate layer 82 having about 10-80mum thickness made of epoxy acrylate, etc., is interposed.
JP56047462A 1981-03-31 1981-03-31 Primary coat structure of optical fiber Granted JPS57161803A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56047462A JPS57161803A (en) 1981-03-31 1981-03-31 Primary coat structure of optical fiber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56047462A JPS57161803A (en) 1981-03-31 1981-03-31 Primary coat structure of optical fiber

Publications (2)

Publication Number Publication Date
JPS57161803A true JPS57161803A (en) 1982-10-05
JPH0370204B2 JPH0370204B2 (en) 1991-11-06

Family

ID=12775814

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56047462A Granted JPS57161803A (en) 1981-03-31 1981-03-31 Primary coat structure of optical fiber

Country Status (1)

Country Link
JP (1) JPS57161803A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5335019A (en) * 1976-09-11 1978-04-01 Nippon Telegr & Teleph Corp <Ntt> Optical fiber cores and their manufacture
JPS5541885U (en) * 1978-09-11 1980-03-18

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5231805A (en) * 1975-09-05 1977-03-10 Ota Masayuki Equipment for making chip stick from scrapped veneers and for applying bonding agent

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5335019A (en) * 1976-09-11 1978-04-01 Nippon Telegr & Teleph Corp <Ntt> Optical fiber cores and their manufacture
JPS5541885U (en) * 1978-09-11 1980-03-18

Also Published As

Publication number Publication date
JPH0370204B2 (en) 1991-11-06

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