JPS5355145A - Optical fiber apparatus - Google Patents

Optical fiber apparatus

Info

Publication number
JPS5355145A
JPS5355145A JP13009076A JP13009076A JPS5355145A JP S5355145 A JPS5355145 A JP S5355145A JP 13009076 A JP13009076 A JP 13009076A JP 13009076 A JP13009076 A JP 13009076A JP S5355145 A JPS5355145 A JP S5355145A
Authority
JP
Japan
Prior art keywords
optical fiber
fiber apparatus
change
fact
length
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
JP13009076A
Other languages
Japanese (ja)
Other versions
JPS5853730B2 (en
Inventor
Munehiko Nagano
Kenji Tatsumi
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP13009076A priority Critical patent/JPS5853730B2/en
Publication of JPS5355145A publication Critical patent/JPS5355145A/en
Publication of JPS5853730B2 publication Critical patent/JPS5853730B2/en
Expired 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
    • G01M11/3172—Reflectometers detecting the back-scattered light in the frequency-domain, e.g. OFDR, FMCW, heterodyne detection

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Testing Of Optical Devices Or Fibers (AREA)
  • Light Guides In General And Applications Therefor (AREA)

Abstract

PURPOSE:To accurately measure the length of an optical fiber with an apparatus of a simple constitution by making use of that fact that the change of the vector composite signal of the modulated light by the end face reflection of the optical fiber and the change of modulation frequency are in a fixed relation.
JP13009076A 1976-10-29 1976-10-29 Optical fiber length measuring device Expired JPS5853730B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13009076A JPS5853730B2 (en) 1976-10-29 1976-10-29 Optical fiber length measuring device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13009076A JPS5853730B2 (en) 1976-10-29 1976-10-29 Optical fiber length measuring device

Publications (2)

Publication Number Publication Date
JPS5355145A true JPS5355145A (en) 1978-05-19
JPS5853730B2 JPS5853730B2 (en) 1983-12-01

Family

ID=15025721

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13009076A Expired JPS5853730B2 (en) 1976-10-29 1976-10-29 Optical fiber length measuring device

Country Status (1)

Country Link
JP (1) JPS5853730B2 (en)

Also Published As

Publication number Publication date
JPS5853730B2 (en) 1983-12-01

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