JPS5627632A - Method for measuring transmission characteristic of optical fiber - Google Patents

Method for measuring transmission characteristic of optical fiber

Info

Publication number
JPS5627632A
JPS5627632A JP10360379A JP10360379A JPS5627632A JP S5627632 A JPS5627632 A JP S5627632A JP 10360379 A JP10360379 A JP 10360379A JP 10360379 A JP10360379 A JP 10360379A JP S5627632 A JPS5627632 A JP S5627632A
Authority
JP
Japan
Prior art keywords
optical fiber
laser
transmission characteristic
extremely narrow
dispersion
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
JP10360379A
Other languages
Japanese (ja)
Inventor
Masaharu Horiguchi
Yasuji Omori
Takao Edahiro
Katsunari Okamoto
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.)
NTT Inc
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 JP10360379A priority Critical patent/JPS5627632A/en
Publication of JPS5627632A publication Critical patent/JPS5627632A/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
    • G01M11/338—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
    • 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
    • G01M11/332—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 discrete input signals

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 enable to measure the mode dispersion transmission characteristic of an optical fiber undergoing little effect of wavelength dispersion by using a particular laser beam aplit into that of an extremely narrow wavelength width. CONSTITUTION:A laser pulse beam generated by a tracking generator 1, a laser driver 2, a semiconductor laser 3, etc., passes a lens 4 and is split by a grating spectrograph 5 into a longitudinal mode pulse beam of extremely narrow wavelength width. Using this pulse beam as a light source, the laser beam enters an optical fiber 7 via an immersion cell 6, and the longitudinal mode beam that was propagated through the fiber 7 without undergoing the effect of wavelength dispersion because of the extremely narrow wavelength width of the beam is detected by an APD8 and applied to a spectrum analyzer 10. By comparing with the received light detection signal of the APD8 when the fiber 7 is cut at a position 1-2m from the end of incidence and the same light source is used, the mode dispersion transmission characteristic of the optical fiber can be measured with high accuracy unaffected by wavelength dispersion.
JP10360379A 1979-08-16 1979-08-16 Method for measuring transmission characteristic of optical fiber Pending JPS5627632A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10360379A JPS5627632A (en) 1979-08-16 1979-08-16 Method for measuring transmission characteristic of optical fiber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10360379A JPS5627632A (en) 1979-08-16 1979-08-16 Method for measuring transmission characteristic of optical fiber

Publications (1)

Publication Number Publication Date
JPS5627632A true JPS5627632A (en) 1981-03-18

Family

ID=14358339

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10360379A Pending JPS5627632A (en) 1979-08-16 1979-08-16 Method for measuring transmission characteristic of optical fiber

Country Status (1)

Country Link
JP (1) JPS5627632A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01118665A (en) * 1987-07-23 1989-05-11 General Textile Cogetex Sa De Droit Francais:Co Product transfer apparatus for final work of quality inspection of fabric product especially, stocking or tights

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01118665A (en) * 1987-07-23 1989-05-11 General Textile Cogetex Sa De Droit Francais:Co Product transfer apparatus for final work of quality inspection of fabric product especially, stocking or tights

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