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JPS5651636A - Measuring method for material dispersion characteristic of fiber - Google Patents

Measuring method for material dispersion characteristic of fiber

Info

Publication number
JPS5651636A
JPS5651636A JP12715779A JP12715779A JPS5651636A JP S5651636 A JPS5651636 A JP S5651636A JP 12715779 A JP12715779 A JP 12715779A JP 12715779 A JP12715779 A JP 12715779A JP S5651636 A JPS5651636 A JP S5651636A
Authority
JP
Japan
Prior art keywords
wavelength
light
phase difference
material dispersion
measure
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
JP12715779A
Other languages
Japanese (ja)
Other versions
JPS6338655B2 (en
Inventor
Masamitsu Tokuda
Keiichiro Iwasaki
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
Sumitomo Electric Industries Ltd
Original Assignee
Nippon Telegraph and Telephone Corp
Sumitomo Electric Industries 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 Nippon Telegraph and Telephone Corp, Sumitomo Electric Industries Ltd filed Critical Nippon Telegraph and Telephone Corp
Priority to JP12715779A priority Critical patent/JPS5651636A/en
Publication of JPS5651636A publication Critical patent/JPS5651636A/en
Publication of JPS6338655B2 publication Critical patent/JPS6338655B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
    • G01M11/30—Testing of optical devices, constituted by fibre optics or optical waveguides
    • G01M11/33—Testing of optical devices, constituted by fibre optics or optical waveguides with a light emitter being disposed at one fibre or waveguide end-face, and a light receiver at the other end-face
    • G01M11/333—Testing of optical devices, constituted by fibre optics or optical waveguides with a light emitter being disposed at one fibre or waveguide end-face, and a light receiver at the other end-face using modulated input signals
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
    • G01M11/30—Testing of optical devices, constituted by fibre optics or optical waveguides
    • G01M11/33—Testing of optical devices, constituted by fibre optics or optical waveguides with a light emitter being disposed at one fibre or waveguide end-face, and a light receiver at the other end-face
    • G01M11/335—Testing of optical devices, constituted by fibre optics or optical waveguides with a light emitter being disposed at one fibre or waveguide end-face, and a light receiver at the other end-face using two or more input wavelengths
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
    • G01M11/30—Testing of optical devices, constituted by fibre optics or optical waveguides
    • G01M11/33—Testing of optical devices, constituted by fibre optics or optical waveguides with a light emitter being disposed at one fibre or waveguide end-face, and a light receiver at the other end-face
    • G01M11/338—Testing of optical devices, constituted by fibre optics or optical waveguides with a light emitter being disposed at one fibre or waveguide end-face, and a light receiver at the other end-face by measuring dispersion other than PMD, e.g. chromatic dispersion

Landscapes

  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Optics & Photonics (AREA)
  • Analytical Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Dispersion Chemistry (AREA)
  • Testing Of Optical Devices Or Fibers (AREA)

Abstract

PURPOSE:To make it possible to separate and measure only the effect of material dispersion with high precision by halving light amplitude-modulated with a single sine wave, by causing them to strike optical fibers differing in length and by measuring a phase difference between detection signals by varying the wavelength of light. CONSTITUTION:Light from variable wavelength light source 1, when passing through external modulator 2, is amplitude-modulated with a high-frequency signal from electric signal generator 3. This modulated light is branched into two by branching filter 4; one is incident to optical fiber 5, and the other to optical fiber 6 differing in length from optical fiber 5. Lights having propagated in optical fibers 5 and 6 are converted into electric signals by detectors 8 and 9 and phase difference measuring instrument 9 measures the phase difference. Next, the wavelength of light source 1 is slightly varied to measure the phase difference again and the wavelength is sequentially varied to measure a phase shift to the wavelength, so that the effect of material dispersion will be obtained.
JP12715779A 1979-10-01 1979-10-01 Measuring method for material dispersion characteristic of fiber Granted JPS5651636A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12715779A JPS5651636A (en) 1979-10-01 1979-10-01 Measuring method for material dispersion characteristic of fiber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12715779A JPS5651636A (en) 1979-10-01 1979-10-01 Measuring method for material dispersion characteristic of fiber

Publications (2)

Publication Number Publication Date
JPS5651636A true JPS5651636A (en) 1981-05-09
JPS6338655B2 JPS6338655B2 (en) 1988-08-01

Family

ID=14953039

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12715779A Granted JPS5651636A (en) 1979-10-01 1979-10-01 Measuring method for material dispersion characteristic of fiber

Country Status (1)

Country Link
JP (1) JPS5651636A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6073333A (en) * 1983-09-30 1985-04-25 Sumitomo Electric Ind Ltd Optical fiber dispersion measurement method
JPS6352034A (en) * 1986-08-21 1988-03-05 Nippon Telegr & Teleph Corp <Ntt> Method and device for measuring single mode optical fiber
FR2689632A1 (en) * 1992-04-02 1993-10-08 Thomson Csf Fiber optic strain detector.
FR2800870A1 (en) * 1999-11-05 2001-05-11 Comm Res Lab Ministry Of Posts Device and procedure for measuring optical dispersion in optical, especially monomode, fiber, in which at least two beams are generated from an initial beam and recombined
WO2011042911A3 (en) * 2009-10-09 2012-05-24 Hitesh Mehta Method and apparatus for demonstration and determination of material dispersion in optical fiber

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6073333A (en) * 1983-09-30 1985-04-25 Sumitomo Electric Ind Ltd Optical fiber dispersion measurement method
JPS6352034A (en) * 1986-08-21 1988-03-05 Nippon Telegr & Teleph Corp <Ntt> Method and device for measuring single mode optical fiber
FR2689632A1 (en) * 1992-04-02 1993-10-08 Thomson Csf Fiber optic strain detector.
FR2800870A1 (en) * 1999-11-05 2001-05-11 Comm Res Lab Ministry Of Posts Device and procedure for measuring optical dispersion in optical, especially monomode, fiber, in which at least two beams are generated from an initial beam and recombined
WO2011042911A3 (en) * 2009-10-09 2012-05-24 Hitesh Mehta Method and apparatus for demonstration and determination of material dispersion in optical fiber

Also Published As

Publication number Publication date
JPS6338655B2 (en) 1988-08-01

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