FR2448715B1 - - Google Patents

Info

Publication number
FR2448715B1
FR2448715B1 FR7931694A FR7931694A FR2448715B1 FR 2448715 B1 FR2448715 B1 FR 2448715B1 FR 7931694 A FR7931694 A FR 7931694A FR 7931694 A FR7931694 A FR 7931694A FR 2448715 B1 FR2448715 B1 FR 2448715B1
Authority
FR
France
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.)
Expired
Application number
FR7931694A
Other languages
French (fr)
Other versions
FR2448715A1 (fr
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.)
Felten and Guilleaume Carlswerk AG
Original Assignee
Felten and Guilleaume Carlswerk AG
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 Felten and Guilleaume Carlswerk AG filed Critical Felten and Guilleaume Carlswerk AG
Publication of FR2448715A1 publication Critical patent/FR2448715A1/fr
Application granted granted Critical
Publication of FR2448715B1 publication Critical patent/FR2448715B1/fr
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
    • G01M11/3109—Reflectometers detecting the back-scattered light in the time-domain, e.g. OTDR
    • G01M11/3163—Reflectometers detecting the back-scattered light in the time-domain, e.g. OTDR by measuring dispersion

Landscapes

  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Dispersion Chemistry (AREA)
  • Optics & Photonics (AREA)
  • Analytical Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Testing Of Optical Devices Or Fibers (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
FR7931694A 1979-02-08 1979-12-26 Procede et dispositif de montage pour mesurer l'affaiblissement dans les fibres conductrices de lumiere Granted FR2448715A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2904703A DE2904703C2 (de) 1979-02-08 1979-02-08 Verfahren zur Dämpfungsmessung an Lichtleitfasern

Publications (2)

Publication Number Publication Date
FR2448715A1 FR2448715A1 (fr) 1980-09-05
FR2448715B1 true FR2448715B1 (it) 1984-10-19

Family

ID=6062415

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7931694A Granted FR2448715A1 (fr) 1979-02-08 1979-12-26 Procede et dispositif de montage pour mesurer l'affaiblissement dans les fibres conductrices de lumiere

Country Status (5)

Country Link
DE (1) DE2904703C2 (it)
FR (1) FR2448715A1 (it)
GB (1) GB2042165A (it)
IT (1) IT1126360B (it)
NL (1) NL8000323A (it)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3115200A1 (de) * 1981-04-15 1983-02-03 Philips Kommunikations Industrie AG, 8500 Nürnberg Verfahren zur messung von impulslaufzeiten, fehlerorten und daempfung auf kabeln und lichtwellenleitern
FR2505045A1 (fr) * 1981-04-30 1982-11-05 Lignes Telegraph Telephon Dispositif de localisation d'une cassure d'une fibre optique transmettant deux signaux lumineux de longueurs d'onde differentes
FR2520113B1 (fr) * 1982-01-15 1986-03-07 Lignes Telegraph Telephon Dispositif de mesure d'attenuation d'une ligne de transmission
SE456190B (sv) * 1983-10-14 1988-09-12 Ericsson Telefon Ab L M Forfarande att i ett fiberoptiskt transmissionssystem meta dispersionen hos den transmitterande optiska fibern
GB2190186B (en) * 1986-05-09 1990-12-19 Dr Jeremy Kenneth Arth Everard Greatly enhanced spatial detection of optical backscatter for sensor applications
US5331391A (en) * 1992-06-16 1994-07-19 Bukhshtab Mikhail A Method of determining the optical loss in reflected radiation in a fibre-optic light guide

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3782824A (en) * 1972-06-01 1974-01-01 Sperry Rand Corp Apparatus and method for measuring extinction coefficient of an atmospheric scattering medium
DE2620357A1 (de) * 1976-05-06 1977-11-17 Aeg Telefunken Kabelwerke Daempfungsmessung in lichtleitern
GB1538316A (en) * 1976-07-13 1979-01-17 Standard Telephones Cables Ltd Optical fibre test equipment and method
GB1560124A (en) * 1977-11-03 1980-01-30 Standard Telephones Cables Ltd Optical fibre cable testing

Also Published As

Publication number Publication date
DE2904703C2 (de) 1985-03-28
IT7927456A0 (it) 1979-11-20
NL8000323A (nl) 1980-08-12
GB2042165A (en) 1980-09-17
FR2448715A1 (fr) 1980-09-05
IT1126360B (it) 1986-05-21
DE2904703A1 (de) 1980-08-28

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Legal Events

Date Code Title Description
ST Notification of lapse