JPS5737305A - Polarization plane preserving optical fiber - Google Patents

Polarization plane preserving optical fiber

Info

Publication number
JPS5737305A
JPS5737305A JP11274180A JP11274180A JPS5737305A JP S5737305 A JPS5737305 A JP S5737305A JP 11274180 A JP11274180 A JP 11274180A JP 11274180 A JP11274180 A JP 11274180A JP S5737305 A JPS5737305 A JP S5737305A
Authority
JP
Japan
Prior art keywords
polarization plane
optical fiber
core
plane preserving
clads
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
JP11274180A
Other languages
Japanese (ja)
Inventor
Toshio Katsuyama
Hiroyoshi Matsumura
Yasuo Suganuma
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP11274180A priority Critical patent/JPS5737305A/en
Priority to US06/223,747 priority patent/US4426129A/en
Priority to DE8383111109T priority patent/DE3177109D1/en
Priority to EP81100130A priority patent/EP0032390B1/en
Priority to EP83111109A priority patent/EP0109604B1/en
Priority to DE8181100130T priority patent/DE3176131D1/en
Publication of JPS5737305A publication Critical patent/JPS5737305A/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
    • G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
    • C03B37/01—Manufacture of glass fibres or filaments
    • C03B37/012—Manufacture of preforms for drawing fibres or filaments
    • C03B37/01205—Manufacture of preforms for drawing fibres or filaments starting from tubes, rods, fibres or filaments
    • C03B37/01211—Manufacture of preforms for drawing fibres or filaments starting from tubes, rods, fibres or filaments by inserting one or more rods or tubes into a tube
    • C03B37/01217—Manufacture of preforms for drawing fibres or filaments starting from tubes, rods, fibres or filaments by inserting one or more rods or tubes into a tube for making preforms of polarisation-maintaining optical fibres
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
    • C03B37/01—Manufacture of glass fibres or filaments
    • C03B37/012—Manufacture of preforms for drawing fibres or filaments
    • C03B37/014—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD]
    • C03B37/018—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD] by glass deposition on a glass substrate, e.g. by inside-, modified-, plasma-, or plasma modified- chemical vapour deposition [ICVD, MCVD, PCVD, PMCVD], i.e. by thin layer coating on the inside or outside of a glass tube or on a glass rod
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2201/00—Type of glass produced
    • C03B2201/06—Doped silica-based glasses
    • C03B2201/08—Doped silica-based glasses doped with boron or fluorine or other refractive index decreasing dopant
    • C03B2201/10—Doped silica-based glasses doped with boron or fluorine or other refractive index decreasing dopant doped with boron
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2203/00—Fibre product details, e.g. structure, shape
    • C03B2203/10—Internal structure or shape details
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2203/00—Fibre product details, e.g. structure, shape
    • C03B2203/10—Internal structure or shape details
    • C03B2203/12—Non-circular or non-elliptical cross-section, e.g. planar core
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2203/00—Fibre product details, e.g. structure, shape
    • C03B2203/10—Internal structure or shape details
    • C03B2203/22—Radial profile of refractive index, composition or softening point
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2203/00—Fibre product details, e.g. structure, shape
    • C03B2203/30—Polarisation maintaining [PM], i.e. birefringent products, e.g. with elliptical core, by use of stress rods, "PANDA" type fibres

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Optics & Photonics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
  • Glass Compositions (AREA)

Abstract

PURPOSE:To obtain an optical fiber which preserves polarization plane and causes less transmission losses by constituting the same of a circular core consisting of silicic acid glass contg. germanium oxide and a jacket formed on the outside circumference thereof via an elliptical clad. CONSTITUTION:In the polarization plane preserving fiber consisting of a circular core 1 having the highest refractive index, elliptical clads 2, 4 which are formed successively concentrically and are lower in refractive index than the core, and a jacket 3 formed on the outside circumference of the clads 2, 4, the core 1 is constituted of silicic acid glass contg. germanium oxide. Said polarization plane preserving fibers refers to a fiber of <=10mm. coupling length L=2pi/DELTAbeta. The circular shape of the core is not a strict one, and is relative with respect to the ellipse of the clads. According to the polarization plane preserving optical fiber obtained in this way, the polarization plane preserving optical fiber of about 1mm. degree of coupling and a low loss of 0.3dB/Km for light of 1.5mum wavelength is obtained.
JP11274180A 1980-01-11 1980-08-18 Polarization plane preserving optical fiber Pending JPS5737305A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP11274180A JPS5737305A (en) 1980-08-18 1980-08-18 Polarization plane preserving optical fiber
US06/223,747 US4426129A (en) 1980-01-11 1981-01-09 Optical fiber and method of producing the same
DE8383111109T DE3177109D1 (en) 1980-01-11 1981-01-09 Polarised plane-maintaining optical fiber
EP81100130A EP0032390B1 (en) 1980-01-11 1981-01-09 Method of producing a preform rod for an optical fiber
EP83111109A EP0109604B1 (en) 1980-01-11 1981-01-09 Polarised plane-maintaining optical fiber
DE8181100130T DE3176131D1 (en) 1980-01-11 1981-01-09 Method of producing a preform rod for an optical fiber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11274180A JPS5737305A (en) 1980-08-18 1980-08-18 Polarization plane preserving optical fiber

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP60150185A Division JPS6187109A (en) 1985-07-10 1985-07-10 Optical fiber maintaining plate of polarization

Publications (1)

Publication Number Publication Date
JPS5737305A true JPS5737305A (en) 1982-03-01

Family

ID=14594383

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11274180A Pending JPS5737305A (en) 1980-01-11 1980-08-18 Polarization plane preserving optical fiber

Country Status (1)

Country Link
JP (1) JPS5737305A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58100101A (en) * 1981-12-10 1983-06-14 Nippon Telegr & Teleph Corp <Ntt> Single-polarization single-mode optical fiber with internal stress application part
JPS58152603U (en) * 1982-04-05 1983-10-13 古河電気工業株式会社 Constant polarization optical fiber
JPS58224306A (en) * 1982-06-23 1983-12-26 Hitachi Cable Ltd Optical fiber for maintaining plane of polarization
JPS5915905A (en) * 1982-07-20 1984-01-27 Hitachi Cable Ltd Optical fiber which maintains plane of plarization
JPS6187109A (en) * 1985-07-10 1986-05-02 Hitachi Ltd Optical fiber maintaining plate of polarization
JP4795340B2 (en) * 2005-05-25 2011-10-19 紋子 長瀬 Footwear holder

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54130044A (en) * 1978-01-13 1979-10-09 Western Electric Co Optical waveguide and method of fabricating same
JPS552293A (en) * 1978-06-09 1980-01-09 Int Standard Electric Corp Production of single mode shape optical fiber having oval core

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54130044A (en) * 1978-01-13 1979-10-09 Western Electric Co Optical waveguide and method of fabricating same
JPS552293A (en) * 1978-06-09 1980-01-09 Int Standard Electric Corp Production of single mode shape optical fiber having oval core

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58100101A (en) * 1981-12-10 1983-06-14 Nippon Telegr & Teleph Corp <Ntt> Single-polarization single-mode optical fiber with internal stress application part
JPS6313521B2 (en) * 1981-12-10 1988-03-25 Nippon Telegraph & Telephone
JPS58152603U (en) * 1982-04-05 1983-10-13 古河電気工業株式会社 Constant polarization optical fiber
JPS58224306A (en) * 1982-06-23 1983-12-26 Hitachi Cable Ltd Optical fiber for maintaining plane of polarization
JPS5915905A (en) * 1982-07-20 1984-01-27 Hitachi Cable Ltd Optical fiber which maintains plane of plarization
JPS6187109A (en) * 1985-07-10 1986-05-02 Hitachi Ltd Optical fiber maintaining plate of polarization
JPS6233562B2 (en) * 1985-07-10 1987-07-21 Hitachi Ltd
JP4795340B2 (en) * 2005-05-25 2011-10-19 紋子 長瀬 Footwear holder

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