JPS57211034A - Searching device for fault point of optical fiber - Google Patents

Searching device for fault point of optical fiber

Info

Publication number
JPS57211034A
JPS57211034A JP9622081A JP9622081A JPS57211034A JP S57211034 A JPS57211034 A JP S57211034A JP 9622081 A JP9622081 A JP 9622081A JP 9622081 A JP9622081 A JP 9622081A JP S57211034 A JPS57211034 A JP S57211034A
Authority
JP
Japan
Prior art keywords
fiber
light
incident
filter
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.)
Granted
Application number
JP9622081A
Other languages
Japanese (ja)
Other versions
JPH0139543B2 (en
Inventor
Kazuhiro Noguchi
Taiji Murakami
Osamu Kawada
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 JP9622081A priority Critical patent/JPS57211034A/en
Publication of JPS57211034A publication Critical patent/JPS57211034A/en
Publication of JPH0139543B2 publication Critical patent/JPH0139543B2/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
    • G01M11/31—Testing of optical devices, constituted by fibre optics or optical waveguides with a light emitter and a light receiver being disposed at the same side of a fibre or waveguide end-face, e.g. reflectometers
    • G01M11/319—Reflectometers using stimulated back-scatter, e.g. Raman or fibre amplifiers

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)
  • Monitoring And Testing Of Transmission In General (AREA)

Abstract

PURPOSE:To realize searching of a fault point at a remote place, by making an optical pulse incident within an optical fiber to be searched, exciting the Raman scattered light and separating the Rayleigh back scattered light from the incident pulse light by an optical branching filter. CONSTITUTION:The optical pulse having a 1.06mum wavelength which is radiated from an optical pulse light source 12 that is driven by a pulse signal generator 11 is fully reflected by an interference filter 19, condensed by a lens 21 and made incident to a fiber 14 to be searched to advance while exciting a Raman light. The excited Raman light travels in the fiber 14 and at the same time produces the Rayleigh back scattered light which goes back toward the incident terminal of the fiber 14. This back scattered light reaches the filter 19 via the lens 21 to pass through the filter 19, is condensed through a lens 22, converted into the electric signals by a photodetector 15 and analyzed by a signal analyzer 16.
JP9622081A 1981-06-22 1981-06-22 Searching device for fault point of optical fiber Granted JPS57211034A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9622081A JPS57211034A (en) 1981-06-22 1981-06-22 Searching device for fault point of optical fiber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9622081A JPS57211034A (en) 1981-06-22 1981-06-22 Searching device for fault point of optical fiber

Publications (2)

Publication Number Publication Date
JPS57211034A true JPS57211034A (en) 1982-12-24
JPH0139543B2 JPH0139543B2 (en) 1989-08-22

Family

ID=14159147

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9622081A Granted JPS57211034A (en) 1981-06-22 1981-06-22 Searching device for fault point of optical fiber

Country Status (1)

Country Link
JP (1) JPS57211034A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0282133A (en) * 1988-09-19 1990-03-22 Fujikura Ltd Method and instrument for measuring strain of optical fiber
WO2020065912A1 (en) * 2018-09-28 2020-04-02 オリンパス株式会社 Spectroscopic analyzer

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0282133A (en) * 1988-09-19 1990-03-22 Fujikura Ltd Method and instrument for measuring strain of optical fiber
WO2020065912A1 (en) * 2018-09-28 2020-04-02 オリンパス株式会社 Spectroscopic analyzer
CN112601482A (en) * 2018-09-28 2021-04-02 奥林巴斯株式会社 Spectroscopic analyzer
JPWO2020065912A1 (en) * 2018-09-28 2021-09-16 オリンパス株式会社 Spectroscopy device
US11442014B2 (en) 2018-09-28 2022-09-13 Olympus Corporation Spectroscopic analysis apparatus

Also Published As

Publication number Publication date
JPH0139543B2 (en) 1989-08-22

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