GB1538316A - Optical fibre test equipment and method - Google Patents

Optical fibre test equipment and method

Info

Publication number
GB1538316A
GB1538316A GB29109/76A GB2910976A GB1538316A GB 1538316 A GB1538316 A GB 1538316A GB 29109/76 A GB29109/76 A GB 29109/76A GB 2910976 A GB2910976 A GB 2910976A GB 1538316 A GB1538316 A GB 1538316A
Authority
GB
United Kingdom
Prior art keywords
optical fibre
test equipment
pulse
train
fibre test
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.)
Expired
Application number
GB29109/76A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB29109/76A priority Critical patent/GB1538316A/en
Priority to AU26949/77A priority patent/AU506152B2/en
Priority to CH865277A priority patent/CH618794A5/en
Publication of GB1538316A publication Critical patent/GB1538316A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
    • H04B10/071—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using a reflected signal, e.g. using optical time domain reflectometers [OTDR]
    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
    • G01S17/06—Systems determining position data of a target
    • G01S17/08—Systems determining position data of a target for measuring distance only
    • G01S17/10—Systems determining position data of a target for measuring distance only using transmission of interrupted, pulse-modulated waves
    • G01S17/18—Systems determining position data of a target for measuring distance only using transmission of interrupted, pulse-modulated waves wherein range gates are used
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

In this method, echo detection is used to determine the position of fractures in optical fibres (7). A pulse generator (1) delivers two pulse trains via its two outputs. The first train triggers the supply of a laser (3), while the second pulse train, which is transmitted with an adjustable delay with respect to the first pulse train, distributes output signals from a photodetector (10) onto "distance ranges", in order to be able to determine the position of the fracture. <IMAGE>
GB29109/76A 1976-07-13 1976-07-13 Optical fibre test equipment and method Expired GB1538316A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB29109/76A GB1538316A (en) 1976-07-13 1976-07-13 Optical fibre test equipment and method
AU26949/77A AU506152B2 (en) 1976-07-13 1977-07-12 Testing of optical fibres
CH865277A CH618794A5 (en) 1976-07-13 1977-07-13 Method for testing optical fibres and device for carrying out the method.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB29109/76A GB1538316A (en) 1976-07-13 1976-07-13 Optical fibre test equipment and method

Publications (1)

Publication Number Publication Date
GB1538316A true GB1538316A (en) 1979-01-17

Family

ID=10286312

Family Applications (1)

Application Number Title Priority Date Filing Date
GB29109/76A Expired GB1538316A (en) 1976-07-13 1976-07-13 Optical fibre test equipment and method

Country Status (3)

Country Link
AU (1) AU506152B2 (en)
CH (1) CH618794A5 (en)
GB (1) GB1538316A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2448715A1 (en) * 1979-02-08 1980-09-05 Felten & Guilleaume Carlswerk MOUNTING METHOD AND DEVICE FOR MEASURING LOWENESS IN LIGHT CONDUCTING FIBERS
DE3002579A1 (en) * 1980-01-25 1983-11-03 Messerschmitt-Bölkow-Blohm GmbH, 8000 München Optical device for range-controlled detonator - uses comparison of signals from photodetectors receiving laser light via different optical paths
GB2122337A (en) * 1982-05-18 1984-01-11 Nat Res Dev Fibre optic sensing device
EP0140853A1 (en) * 1983-10-14 1985-05-08 Telefonaktiebolaget L M Ericsson A method of measuring the dispersion of a transmitting optical fibre
US4552454A (en) * 1983-02-08 1985-11-12 Hughes Aircraft Company System and method for detecting a plurality of targets
EP1023587A1 (en) * 1996-10-10 2000-08-02 Tyco Submarine Systems Ltd. Side-tone otdr for in-service optical cable monitoring
CN102200580A (en) * 2010-03-25 2011-09-28 付陆欣 Ranging method for handheld laser range finder
CN106324408A (en) * 2016-10-10 2017-01-11 武汉锐科光纤激光技术股份有限公司 Firing machine tool circuit for medium and high power continuous laser
CN116908211A (en) * 2023-09-06 2023-10-20 山东华光新材料技术有限公司 Defect detection device for manufacturing optical fiber perform

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2448715A1 (en) * 1979-02-08 1980-09-05 Felten & Guilleaume Carlswerk MOUNTING METHOD AND DEVICE FOR MEASURING LOWENESS IN LIGHT CONDUCTING FIBERS
DE3002579A1 (en) * 1980-01-25 1983-11-03 Messerschmitt-Bölkow-Blohm GmbH, 8000 München Optical device for range-controlled detonator - uses comparison of signals from photodetectors receiving laser light via different optical paths
GB2122337A (en) * 1982-05-18 1984-01-11 Nat Res Dev Fibre optic sensing device
US4552454A (en) * 1983-02-08 1985-11-12 Hughes Aircraft Company System and method for detecting a plurality of targets
EP0140853A1 (en) * 1983-10-14 1985-05-08 Telefonaktiebolaget L M Ericsson A method of measuring the dispersion of a transmitting optical fibre
EP1023587A1 (en) * 1996-10-10 2000-08-02 Tyco Submarine Systems Ltd. Side-tone otdr for in-service optical cable monitoring
EP1023587A4 (en) * 1996-10-10 2005-06-08 Tyco Submarine Systems Ltd Side-tone otdr for in-service optical cable monitoring
CN102200580A (en) * 2010-03-25 2011-09-28 付陆欣 Ranging method for handheld laser range finder
CN106324408A (en) * 2016-10-10 2017-01-11 武汉锐科光纤激光技术股份有限公司 Firing machine tool circuit for medium and high power continuous laser
CN106324408B (en) * 2016-10-10 2023-08-22 武汉锐科光纤激光技术股份有限公司 Work circuit of baking machine for medium-high power continuous laser
CN116908211A (en) * 2023-09-06 2023-10-20 山东华光新材料技术有限公司 Defect detection device for manufacturing optical fiber perform

Also Published As

Publication number Publication date
AU506152B2 (en) 1979-12-13
CH618794A5 (en) 1980-08-15
AU2694977A (en) 1979-01-18

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PE20 Patent expired after termination of 20 years

Effective date: 19970711