GB9120504D0 - Apparatus for testing optical fiber by using oprical heterodyne technique - Google Patents

Apparatus for testing optical fiber by using oprical heterodyne technique

Info

Publication number
GB9120504D0
GB9120504D0 GB919120504A GB9120504A GB9120504D0 GB 9120504 D0 GB9120504 D0 GB 9120504D0 GB 919120504 A GB919120504 A GB 919120504A GB 9120504 A GB9120504 A GB 9120504A GB 9120504 D0 GB9120504 D0 GB 9120504D0
Authority
GB
United Kingdom
Prior art keywords
oprical
optical fiber
testing optical
heterodyne technique
heterodyne
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
GB919120504A
Other versions
GB2248990B (en
GB2248990A (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.)
Ando Electric Co Ltd
Original Assignee
Ando Electric Co Ltd
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 Ando Electric Co Ltd filed Critical Ando Electric Co Ltd
Publication of GB9120504D0 publication Critical patent/GB9120504D0/en
Publication of GB2248990A publication Critical patent/GB2248990A/en
Application granted granted Critical
Publication of GB2248990B publication Critical patent/GB2248990B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • 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
    • G01M11/3181—Reflectometers dealing with polarisation

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Testing Of Optical Devices Or Fibers (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
  • Tests Of Electronic Circuits (AREA)
GB9120504A 1990-09-28 1991-09-26 Apparatus for testing optical fiber by using optical heterodyne technique Expired - Fee Related GB2248990B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP26024790A JPH04138331A (en) 1990-09-28 1990-09-28 Optical pulse tester using heterodyne light receiving

Publications (3)

Publication Number Publication Date
GB9120504D0 true GB9120504D0 (en) 1991-11-06
GB2248990A GB2248990A (en) 1992-04-22
GB2248990B GB2248990B (en) 1994-08-31

Family

ID=17345399

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9120504A Expired - Fee Related GB2248990B (en) 1990-09-28 1991-09-26 Apparatus for testing optical fiber by using optical heterodyne technique

Country Status (3)

Country Link
JP (1) JPH04138331A (en)
BE (1) BE1005213A3 (en)
GB (1) GB2248990B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109143263A (en) * 2018-07-05 2019-01-04 合肥菲涅尔光电科技有限公司 A kind of mixed type anemometry laser radar

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3122293B2 (en) * 1993-10-29 2001-01-09 安藤電気株式会社 OTDR measurement device
JP2001281102A (en) * 2000-03-30 2001-10-10 Ando Electric Co Ltd Characteristic measuring device of optical fiber and characteristic measuring method
US6563590B2 (en) * 2001-02-16 2003-05-13 Corning Incorporated System and method for measurement of the state of polarization over wavelength
KR20210007648A (en) 2019-07-12 2021-01-20 엘지전자 주식회사 refrigerator

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2165118B (en) * 1984-09-29 1988-01-20 Plessey Co Plc Otdr for sensing distortions in optical fibres
JPS63313030A (en) * 1987-06-15 1988-12-21 Yokogawa Electric Corp Optical fiber testing device
GB2215549B (en) * 1988-03-08 1992-02-12 Stc Plc Sensor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109143263A (en) * 2018-07-05 2019-01-04 合肥菲涅尔光电科技有限公司 A kind of mixed type anemometry laser radar
CN109143263B (en) * 2018-07-05 2022-11-01 夏和娣 Mixed type wind measurement laser radar

Also Published As

Publication number Publication date
BE1005213A3 (en) 1993-05-25
GB2248990B (en) 1994-08-31
JPH04138331A (en) 1992-05-12
GB2248990A (en) 1992-04-22

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20000926