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 (en
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/en
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
FR7931694A 1979-02-08 1979-12-26 MOUNTING METHOD AND DEVICE FOR MEASURING LOWENESS IN LIGHT CONDUCTING FIBERS Granted FR2448715A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2904703A DE2904703C2 (en) 1979-02-08 1979-02-08 Method for measuring attenuation on optical fibers

Publications (2)

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

Family

ID=6062415

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7931694A Granted FR2448715A1 (en) 1979-02-08 1979-12-26 MOUNTING METHOD AND DEVICE FOR MEASURING LOWENESS IN LIGHT CONDUCTING FIBERS

Country Status (5)

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

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3115200A1 (en) * 1981-04-15 1983-02-03 Philips Kommunikations Industrie AG, 8500 Nürnberg METHOD FOR MEASURING PULSE RUNNING TIMES, ERROR LOCATIONS AND DAMPING ON CABLES AND FOCUS
FR2505045A1 (en) * 1981-04-30 1982-11-05 Lignes Telegraph Telephon Fibre=optic cable fracture location determn. circuit - uses clock to measure propagation time difference for two laser diodes emitting different wavelengths
FR2520113B1 (en) * 1982-01-15 1986-03-07 Lignes Telegraph Telephon DEVICE FOR ATTENUATING MEASUREMENT OF A TRANSMISSION LINE
SE456190B (en) * 1983-10-14 1988-09-12 Ericsson Telefon Ab L M PROCEDURE THAT IN A FIBER OPTICAL TRANSMISSION SYSTEM META THE DISPERSION OF THE TRANSMITTING OPTICAL FIBER
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 (en) * 1976-05-06 1977-11-17 Aeg Telefunken Kabelwerke Optical fibre attenuation measurement - using transmitted and reflected pulse energy comparison in UV, visible and IR regions
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
FR2448715A1 (en) 1980-09-05
DE2904703C2 (en) 1985-03-28
DE2904703A1 (en) 1980-08-28
NL8000323A (en) 1980-08-12
GB2042165A (en) 1980-09-17
IT7927456A0 (en) 1979-11-20
IT1126360B (en) 1986-05-21

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Legal Events

Date Code Title Description
ST Notification of lapse