JPS5643528A - Continuous measuring method of optical fiber transmission characteristic - Google Patents

Continuous measuring method of optical fiber transmission characteristic

Info

Publication number
JPS5643528A
JPS5643528A JP11920779A JP11920779A JPS5643528A JP S5643528 A JPS5643528 A JP S5643528A JP 11920779 A JP11920779 A JP 11920779A JP 11920779 A JP11920779 A JP 11920779A JP S5643528 A JPS5643528 A JP S5643528A
Authority
JP
Japan
Prior art keywords
optical fiber
fiber
signal
optical
propagated
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
JP11920779A
Other languages
Japanese (ja)
Inventor
Masaharu Horiguchi
Katsunari Okamoto
Kaname Jinguuji
Noriyoshi Shibata
Takao Edahiro
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 JP11920779A priority Critical patent/JPS5643528A/en
Publication of JPS5643528A publication Critical patent/JPS5643528A/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
    • 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
    • C03B37/02—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor
    • C03B37/025—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor from reheated softened tubes, rods, fibres or filaments, e.g. drawing fibres from preforms
    • C03B37/0253—Controlling or regulating

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Organic Chemistry (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Optics & Photonics (AREA)
  • Analytical Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Testing Of Optical Devices Or Fibers (AREA)

Abstract

PURPOSE:To make it possible to measure a variation of characteristic in the longitudinal direction of the optical fiber, by continuously observing the propagation waveform while wire drawing the optical fiber. CONSTITUTION:An optical pulse generated by a GaAs semiconductor laser is made to perform incidence to the core part of the optical fiber base metal 9 through the condenser lens 5 and the interference filter 6. Subsequently, the optical pulse which has propagated the fiber is detected by fixing the tip of the optical fiber 11 whose wire has been drawn, onto the light receiving surface of the silicon avalanche photodiode 19. And it is input to the sampling oscilloscope 18 through the high- frequency cable 15' after amplifying it by the wide band amplifier, and delaying it by inputting to the delay line 16. On the other hand, a signal which is not delayed is used as a trigger signal of the oscilloscope 18 by the high-frequency cable 17. As mentioned above, a pulse waveform which has propagated is observed continuously while wire drawing. Also, the level observation signal is made a trigger signal, and therefore even if the length of the fiber is varied every moment, an output signal of the fiber can be observed fixedly.
JP11920779A 1979-09-19 1979-09-19 Continuous measuring method of optical fiber transmission characteristic Pending JPS5643528A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11920779A JPS5643528A (en) 1979-09-19 1979-09-19 Continuous measuring method of optical fiber transmission characteristic

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11920779A JPS5643528A (en) 1979-09-19 1979-09-19 Continuous measuring method of optical fiber transmission characteristic

Publications (1)

Publication Number Publication Date
JPS5643528A true JPS5643528A (en) 1981-04-22

Family

ID=14755576

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11920779A Pending JPS5643528A (en) 1979-09-19 1979-09-19 Continuous measuring method of optical fiber transmission characteristic

Country Status (1)

Country Link
JP (1) JPS5643528A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63122008A (en) * 1986-11-11 1988-05-26 Victor Co Of Japan Ltd Magnetic tape for adjusting track linearity
JP2002365165A (en) * 2001-06-08 2002-12-18 Sumitomo Electric Ind Ltd Wavelength dispersion measuring device and method
WO2014179249A1 (en) * 2013-04-30 2014-11-06 Corning Incorporated Methods for modifying multi-mode optical fiber manufacturing processes
US11698485B2 (en) 2020-01-03 2023-07-11 Corning Incorporated Method for manufacturing multimode optical fibers

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52121335A (en) * 1976-04-06 1977-10-12 Nippon Telegr & Teleph Corp <Ntt> Optical fiber drawing apparatus

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52121335A (en) * 1976-04-06 1977-10-12 Nippon Telegr & Teleph Corp <Ntt> Optical fiber drawing apparatus

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63122008A (en) * 1986-11-11 1988-05-26 Victor Co Of Japan Ltd Magnetic tape for adjusting track linearity
JP2002365165A (en) * 2001-06-08 2002-12-18 Sumitomo Electric Ind Ltd Wavelength dispersion measuring device and method
WO2014179249A1 (en) * 2013-04-30 2014-11-06 Corning Incorporated Methods for modifying multi-mode optical fiber manufacturing processes
US11708291B2 (en) 2013-04-30 2023-07-25 Corning Incorporated Methods for modifying multi-mode optical fiber manufacturing processes
US11698485B2 (en) 2020-01-03 2023-07-11 Corning Incorporated Method for manufacturing multimode optical fibers

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