JPS56103343A - Method for measuring wavelength dispersion - Google Patents

Method for measuring wavelength dispersion

Info

Publication number
JPS56103343A
JPS56103343A JP564980A JP564980A JPS56103343A JP S56103343 A JPS56103343 A JP S56103343A JP 564980 A JP564980 A JP 564980A JP 564980 A JP564980 A JP 564980A JP S56103343 A JPS56103343 A JP S56103343A
Authority
JP
Japan
Prior art keywords
light
wavelength dispersion
modulated
sine waves
waves
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
JP564980A
Other languages
Japanese (ja)
Inventor
Kenji Okada
Ikutaro Kobayashi
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 JP564980A priority Critical patent/JPS56103343A/en
Publication of JPS56103343A publication Critical patent/JPS56103343A/en
Pending 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)
  • Spectrometry And Color Measurement (AREA)

Abstract

PURPOSE:To eliminate the effect of pulse distortions and improve SN ratio by using a white light source modulated by repetitive waves such as sine waves and measuring wavelength dispersion by, for example, a zero point method by using the interference of these sine waves. CONSTITUTION:In a white signal modulator 102, white light is intensity-modulated by the sine wave generated from a sine wave generator 101, and the intensity-modulated light is entered to a fiber 103 to be measured. The light of required wavelength lambda1, lambda2 is extracted by a spectroscope 104, and the envelopes of the light of the respective wavelengths are detected by light-electricity converters 105, 106, whereby the sine waves are reproduced. The phase difference of the two reproduced sine waves are measured with a phase difference measuring device 107, and the wavelength dispersion is obtained by operation using this value.
JP564980A 1980-01-23 1980-01-23 Method for measuring wavelength dispersion Pending JPS56103343A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP564980A JPS56103343A (en) 1980-01-23 1980-01-23 Method for measuring wavelength dispersion

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP564980A JPS56103343A (en) 1980-01-23 1980-01-23 Method for measuring wavelength dispersion

Publications (1)

Publication Number Publication Date
JPS56103343A true JPS56103343A (en) 1981-08-18

Family

ID=11616968

Family Applications (1)

Application Number Title Priority Date Filing Date
JP564980A Pending JPS56103343A (en) 1980-01-23 1980-01-23 Method for measuring wavelength dispersion

Country Status (1)

Country Link
JP (1) JPS56103343A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4750833A (en) * 1985-12-03 1988-06-14 Princeton Applied Research Corp. Fiber optic dispersion method and apparatus
JP2002365165A (en) * 2001-06-08 2002-12-18 Sumitomo Electric Ind Ltd Wavelength dispersion measuring device and method
EP1645861A1 (en) * 2004-10-06 2006-04-12 Acterna Germany GmbH Device for and method of measuring the chromatic dispersion of an optical transmission section
EP1659387A1 (en) * 2004-11-23 2006-05-24 Acterna Germany GmbH Device for and method of measuring the chromatic dispersion

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4750833A (en) * 1985-12-03 1988-06-14 Princeton Applied Research Corp. Fiber optic dispersion method and apparatus
JP2002365165A (en) * 2001-06-08 2002-12-18 Sumitomo Electric Ind Ltd Wavelength dispersion measuring device and method
EP1645861A1 (en) * 2004-10-06 2006-04-12 Acterna Germany GmbH Device for and method of measuring the chromatic dispersion of an optical transmission section
EP1659387A1 (en) * 2004-11-23 2006-05-24 Acterna Germany GmbH Device for and method of measuring the chromatic dispersion

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