JPS56155828A - Detector for fault of optical fiber - Google Patents

Detector for fault of optical fiber

Info

Publication number
JPS56155828A
JPS56155828A JP5949480A JP5949480A JPS56155828A JP S56155828 A JPS56155828 A JP S56155828A JP 5949480 A JP5949480 A JP 5949480A JP 5949480 A JP5949480 A JP 5949480A JP S56155828 A JPS56155828 A JP S56155828A
Authority
JP
Japan
Prior art keywords
fault
intensity
light
optical fiber
scattered light
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
JP5949480A
Other languages
Japanese (ja)
Inventor
Shigeki Sakaguchi
Takao Kimura
Kazunori Senda
Shoichi Sudo
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 JP5949480A priority Critical patent/JPS56155828A/en
Publication of JPS56155828A publication Critical patent/JPS56155828A/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
    • G01M11/35—Testing of optical devices, constituted by fibre optics or optical waveguides in which light is transversely coupled into or out of the fibre or waveguide, e.g. using integrating spheres

Landscapes

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

Abstract

PURPOSE:To detect even a fault of size equivalent to a low-intensity area sufficiently by detecting light scattered due to a fault and emitted outward and by measuring the intensity of the scattered light. CONSTITUTION:A couple of integral balls 4 and 4' having the same characteristics are located under heater 2 and wire-drawn optical fiber 3 runs through them. Light emitted from the heating area of base material 1 passes through optical fiber 3 and is detected by photodetectors 5 and 5'. Outputs of detectors 5 and 5' are supplied to differential amplifier 7 via amplifiers 6 and 6' to amplify the difference in light intensity between the detection outputs and the difference is supplied to and recorded on recorder 8. Thus, only the intensity of scattered light due to a fault is detected and the size of the fault is made to correspond to the intensity of the scattered light, thereby finding the size of the fault from the intensity of scattered light.
JP5949480A 1980-05-07 1980-05-07 Detector for fault of optical fiber Pending JPS56155828A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5949480A JPS56155828A (en) 1980-05-07 1980-05-07 Detector for fault of optical fiber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5949480A JPS56155828A (en) 1980-05-07 1980-05-07 Detector for fault of optical fiber

Publications (1)

Publication Number Publication Date
JPS56155828A true JPS56155828A (en) 1981-12-02

Family

ID=13114890

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5949480A Pending JPS56155828A (en) 1980-05-07 1980-05-07 Detector for fault of optical fiber

Country Status (1)

Country Link
JP (1) JPS56155828A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61112940A (en) * 1984-11-08 1986-05-30 Tatsuta Electric Wire & Cable Co Ltd Apparatus for measuring base material of optical fiber
EP0186960A2 (en) * 1984-12-24 1986-07-09 Sumitomo Electric Industries Limited Method for inspecting an optical fiber
EP1387159A3 (en) * 2002-07-29 2006-06-14 Samsung Electronics Co., Ltd. Light scattering monitor in optical fiber drawing system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61112940A (en) * 1984-11-08 1986-05-30 Tatsuta Electric Wire & Cable Co Ltd Apparatus for measuring base material of optical fiber
JPH0534618B2 (en) * 1984-11-08 1993-05-24 Tatsuta Densen Kk
EP0186960A2 (en) * 1984-12-24 1986-07-09 Sumitomo Electric Industries Limited Method for inspecting an optical fiber
US4678327A (en) * 1984-12-24 1987-07-07 Sumitomo Electric Industries, Ltd. Method for inspecting an optical fiber
EP1387159A3 (en) * 2002-07-29 2006-06-14 Samsung Electronics Co., Ltd. Light scattering monitor in optical fiber drawing system

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