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JPS5720707A - Single mode optical fiber with groove having different refractive index - Google Patents

Single mode optical fiber with groove having different refractive index

Info

Publication number
JPS5720707A
JPS5720707A JP9595680A JP9595680A JPS5720707A JP S5720707 A JPS5720707 A JP S5720707A JP 9595680 A JP9595680 A JP 9595680A JP 9595680 A JP9595680 A JP 9595680A JP S5720707 A JPS5720707 A JP S5720707A
Authority
JP
Japan
Prior art keywords
refractive index
clad
core
optical fiber
groove
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
JP9595680A
Other languages
Japanese (ja)
Other versions
JPS6023321B2 (en
Inventor
Katsunari Okamoto
Takao Edahiro
Akio Kawana
Tetsuo Miya
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 JP55095956A priority Critical patent/JPS6023321B2/en
Priority to CA361,298A priority patent/CA1124119A/en
Priority to US06/192,704 priority patent/US4372647A/en
Priority to EP80106090A priority patent/EP0026937B1/en
Priority to DE8080106090T priority patent/DE3071570D1/en
Publication of JPS5720707A publication Critical patent/JPS5720707A/en
Publication of JPS6023321B2 publication Critical patent/JPS6023321B2/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
    • G02B6/02214—Optical fibres with cladding with or without a coating tailored to obtain the desired dispersion, e.g. dispersion shifted, dispersion flattened
    • G02B6/02219—Characterised by the wavelength dispersion properties in the silica low loss window around 1550 nm, i.e. S, C, L and U bands from 1460-1675 nm
    • G02B6/02228—Dispersion flattened fibres, i.e. having a low dispersion variation over an extended wavelength range
    • 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
    • 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 - +

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Glass Compositions (AREA)
  • Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)

Abstract

PURPOSE:To reduce the leakage of light and to decrease the bending and micropending loss by attaching a concentric layer with lower refractive index than that of the core of an optical fiber and a clad between the core and clad. CONSTITUTION:A concentric intermediate layer 3 whose essential component is quartz with lower refractive index than that of a core 1 whose essential component is quartz glass and a clad 2 is fitted between the core 1 and clad 2. After separating a silicon dioxide film including about 1mol% fluorine on the inner surface of a quartz glass tube whose outer diameter is 14mm. and inner diameter is 12mm. by vaper phase reaction and moreover separating a film including about 5mol% germanium dioxide on the inner surface of the silicon dioxide film, these films are heated at 1,700 deg.C and wire-drawn at 2,000 deg.C to obtain a single mode optical fiber with a groove having a different refractive index. Thus, light leakage is reduced and bending loss and micropending loss are decreased.
JP55095956A 1979-10-08 1980-07-14 Index grooved single mode optical fiber Expired JPS6023321B2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP55095956A JPS6023321B2 (en) 1980-07-14 1980-07-14 Index grooved single mode optical fiber
CA361,298A CA1124119A (en) 1979-10-08 1980-10-01 Single mode optical fibers
US06/192,704 US4372647A (en) 1979-10-08 1980-10-01 Single mode optical fibers
EP80106090A EP0026937B1 (en) 1979-10-08 1980-10-07 Single mode optical fibers
DE8080106090T DE3071570D1 (en) 1979-10-08 1980-10-07 Single mode optical fibers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55095956A JPS6023321B2 (en) 1980-07-14 1980-07-14 Index grooved single mode optical fiber

Publications (2)

Publication Number Publication Date
JPS5720707A true JPS5720707A (en) 1982-02-03
JPS6023321B2 JPS6023321B2 (en) 1985-06-07

Family

ID=14151686

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55095956A Expired JPS6023321B2 (en) 1979-10-08 1980-07-14 Index grooved single mode optical fiber

Country Status (1)

Country Link
JP (1) JPS6023321B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010044426A (en) * 1999-01-04 2010-02-25 Alcatel-Lucent Optical fiber with low slope of wavelength dispersion
WO2013099555A1 (en) * 2011-12-28 2013-07-04 住友電気工業株式会社 Multicore optical fiber

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6359239U (en) * 1986-10-08 1988-04-20
JPS63152941U (en) * 1987-03-27 1988-10-06

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5525643A (en) * 1978-08-11 1980-02-23 Mitsubishi Heavy Ind Ltd Method of carrying article
JPS5652706A (en) * 1979-10-08 1981-05-12 Nippon Telegr & Teleph Corp <Ntt> Single mode optical fiber with intermediate layer

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5525643A (en) * 1978-08-11 1980-02-23 Mitsubishi Heavy Ind Ltd Method of carrying article
JPS5652706A (en) * 1979-10-08 1981-05-12 Nippon Telegr & Teleph Corp <Ntt> Single mode optical fiber with intermediate layer

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010044426A (en) * 1999-01-04 2010-02-25 Alcatel-Lucent Optical fiber with low slope of wavelength dispersion
WO2013099555A1 (en) * 2011-12-28 2013-07-04 住友電気工業株式会社 Multicore optical fiber
JP2013137430A (en) * 2011-12-28 2013-07-11 Sumitomo Electric Ind Ltd Multi-core optical fiber
US9547122B2 (en) 2011-12-28 2017-01-17 Sumitomo Electric Industries, Ltd. Multi-core optical fiber

Also Published As

Publication number Publication date
JPS6023321B2 (en) 1985-06-07

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