SE7907153L - OPTICAL TIME INTERVAL REFLECTORS FOR DETERMINATION OF THE DIMENSION OF LIGHT FIBER FIBERS - Google Patents

OPTICAL TIME INTERVAL REFLECTORS FOR DETERMINATION OF THE DIMENSION OF LIGHT FIBER FIBERS

Info

Publication number
SE7907153L
SE7907153L SE7907153A SE7907153A SE7907153L SE 7907153 L SE7907153 L SE 7907153L SE 7907153 A SE7907153 A SE 7907153A SE 7907153 A SE7907153 A SE 7907153A SE 7907153 L SE7907153 L SE 7907153L
Authority
SE
Sweden
Prior art keywords
optical time
reflectors
dimension
determination
time interval
Prior art date
Application number
SE7907153A
Other languages
Swedish (sv)
Other versions
SE444731B (en
Inventor
R Spieker
Original Assignee
Felten & Guilleaume Carlswerk
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 & Guilleaume Carlswerk filed Critical Felten & Guilleaume Carlswerk
Publication of SE7907153L publication Critical patent/SE7907153L/en
Publication of SE444731B publication Critical patent/SE444731B/en

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
    • G01M11/3145—Details of the optoelectronics or data analysis

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Testing Of Optical Devices Or Fibers (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

An optical time range reflectometer for determining the attenuation of an optically conductive filament 6 comprises a source of light 3 controlled by a pulse generator 1, a ray divider 7, a detector 8, an amplifier 9, a signal processor, an indicating device, and control means 2. The signal processor comprises a sample-and-hold circuit 10 by means of which a back-scatter signal periodically received is scanned under control of a unit 2 (Fig. 2) containing two ramp generators each having different characteristics to produce a series of sample commands which are increasingly displaced relative to the trigger pulse. <IMAGE>
SE7907153A 1978-08-31 1979-08-28 DEVICE FOR DETERMINATION OF THE DIMENSION OF LIGHT FIBER FIBERS SE444731B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2837981A DE2837981C2 (en) 1978-08-31 1978-08-31 Optical time domain reflectometer for determining the attenuation of optical fibers

Publications (2)

Publication Number Publication Date
SE7907153L true SE7907153L (en) 1980-03-01
SE444731B SE444731B (en) 1986-04-28

Family

ID=6048345

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7907153A SE444731B (en) 1978-08-31 1979-08-28 DEVICE FOR DETERMINATION OF THE DIMENSION OF LIGHT FIBER FIBERS

Country Status (6)

Country Link
CH (1) CH636960A5 (en)
DE (1) DE2837981C2 (en)
FR (1) FR2435026A1 (en)
GB (1) GB2033078B (en)
IT (1) IT1112188B (en)
SE (1) SE444731B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2945055C2 (en) * 1979-11-08 1982-09-02 Philips Kommunikations Industrie Ag, 8500 Nuernberg Method and device for keeping constant the light power guided in an optical fiber
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
GB2122337B (en) * 1982-05-18 1985-11-13 Nat Res Dev Fibre optic sensing device
GB2138234B (en) * 1983-04-14 1986-10-08 Standard Telephones Cables Ltd Coherent reflectometer
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
GB2198524B (en) * 1986-12-11 1990-08-29 Plessey Co Plc Improvements relating to optical sensing systems
DE4328486A1 (en) * 1993-08-24 1995-03-02 Siemens Ag Monitoring of single-fibre optical connection lines up to a passive interface

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Also Published As

Publication number Publication date
CH636960A5 (en) 1983-06-30
FR2435026B1 (en) 1984-06-15
GB2033078B (en) 1983-05-11
DE2837981C2 (en) 1986-01-30
IT1112188B (en) 1986-01-13
DE2837981A1 (en) 1980-03-06
SE444731B (en) 1986-04-28
IT7920298A0 (en) 1979-02-16
FR2435026A1 (en) 1980-03-28
GB2033078A (en) 1980-05-14

Similar Documents

Publication Publication Date Title
JPS57123497A (en) Measuring apparatus utilizing optical fiber
SE8301574L (en) APPLICATION FOR OPTICAL EXAMINATION OF FOREMAL
JPS641925A (en) Device for testing light radiating device
GB2015844A (en) A device for detecting the presence of an object
SE7907153L (en) OPTICAL TIME INTERVAL REFLECTORS FOR DETERMINATION OF THE DIMENSION OF LIGHT FIBER FIBERS
JPS55157723A (en) Beam deflecting device
DE59104856D1 (en) Photometric measuring device.
SU574631A1 (en) Device for measuring temperature in electric apparatus
SE7803140L (en) DEVICE FOR READING AN OPTICAL RADIATION REFLECTIVE RECORDER
DK448780A (en) distance recorder
JPS6418070A (en) Detecting apparatus for voltage
JPS5687818A (en) Reflex type position detector
DE3585263D1 (en) DEVICE FOR CARRYING OUT DYNAMIC COMPARISON MEASURES ON FIRE GUIDE SYSTEMS FOR DIRECTED ARMS.
JPS5644821A (en) Measuring method of optical lens focal distance and measuring system therefor
SU1017932A1 (en) Optical system for transmitting light from the source to sensing element
JPS5515073A (en) Light intensity fluctuation correcting unit
JPS564004A (en) System for detecting minute defects of body
EP0075422A3 (en) Measuring performance of reflex reflectors
SU1196744A1 (en) Dilatometer
JPS57199931A (en) Detecting apparatus of disconnected part for optical fiber
JPS5716337A (en) Highspeed eye tester
SU1019388A1 (en) Optical mechanical scanning device
FR2315706A1 (en) METHOD AND DEVICE FOR AUTOMATIC FOCUSING OF AN OPTICAL APPARATUS INCLUDING A DETECTION NETWORK
ES2108204T3 (en) PROCEDURE WITH DEVICE FOR THE DETECTION OF REFLECTIONS.
SU673895A1 (en) Hephelometer

Legal Events

Date Code Title Description
NUG Patent has lapsed

Ref document number: 7907153-6

Effective date: 19900703

Format of ref document f/p: F