JPS6486032A - Optical fiber evaluator - Google Patents
Optical fiber evaluatorInfo
- Publication number
- JPS6486032A JPS6486032A JP24251887A JP24251887A JPS6486032A JP S6486032 A JPS6486032 A JP S6486032A JP 24251887 A JP24251887 A JP 24251887A JP 24251887 A JP24251887 A JP 24251887A JP S6486032 A JPS6486032 A JP S6486032A
- Authority
- JP
- Japan
- Prior art keywords
- optical fiber
- light
- length
- wise
- rayleigh scattered
- 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.)
- Pending
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
- G01M11/319—Reflectometers using stimulated back-scatter, e.g. Raman or fibre amplifiers
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)
- Light Guides In General And Applications Therefor (AREA)
Abstract
PURPOSE:To evaluate a length-wise fluctuation of a wave guide parameter, by extracting and detecting a back Rayleigh scattered waveform with respect to length-wise positions of an optical fiber to measure a Brillouin gain distribution for the light detected. CONSTITUTION:Light from an inspection light source 1 brings a back Rayleigh scattered light from an optical fiber 13 to perform a photo and photoheterodyne detection of a local oscillation laser 18 with a photo detector 19. Here, a portion along of the back Rayleigh scattered light waveform corresponding to a desired optical fiber length-wise position is extracted with a waveform shaping optical element 14 to detect light. Thus, an output from the photo detector 19 is inputted into a lock-in amplifier 24 as input thereinto 24 while a signal from a modulator 6 done so as reference signal thereby enabling the outputting of a Brillouin gain distribution with respect to a noted position along the length of the optical fiber as function of a sweep light frequency of an inspection light source 1 being swept with an oscillator 2.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP24251887A JPS6486032A (en) | 1987-09-29 | 1987-09-29 | Optical fiber evaluator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP24251887A JPS6486032A (en) | 1987-09-29 | 1987-09-29 | Optical fiber evaluator |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6486032A true JPS6486032A (en) | 1989-03-30 |
Family
ID=17090299
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP24251887A Pending JPS6486032A (en) | 1987-09-29 | 1987-09-29 | Optical fiber evaluator |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6486032A (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0282133A (en) * | 1988-09-19 | 1990-03-22 | Fujikura Ltd | Method and instrument for measuring strain of optical fiber |
JPH10111171A (en) * | 1996-10-03 | 1998-04-28 | Hitachi Cable Ltd | Optical fiber strain distribution sensor |
WO2007086357A1 (en) * | 2006-01-27 | 2007-08-02 | The University Of Tokyo | Optical fiber characteristic measuring device and optical fiber characteristics measuring method |
GB2443993A (en) * | 2005-12-01 | 2008-05-21 | Yokogawa Electric Corp | Optical fibre characteristic measuring apparatus and optical fibre characteristic measuring method |
CN102620857A (en) * | 2012-03-27 | 2012-08-01 | 南京大学 | Brillouin optical time domain reflectometer for single-photon detection based on edged filter method |
WO2012165587A1 (en) * | 2011-05-31 | 2012-12-06 | 日本電信電話株式会社 | Device for analyzing optical fiber path characteristics and method for analyzing same |
JP2017049255A (en) * | 2015-09-02 | 2017-03-09 | リオス テクノロジー ゲーエムベーハーLIOS Technology GmbH | Device and method for spatially resolved measurement of temperature and/or strain by brillouin scattering |
CN107560644A (en) * | 2017-07-20 | 2018-01-09 | 全球能源互联网研究院 | A kind of distribution type optical fiber sensing equipment perceived based on signal multiplexing with demodulating |
JP2020056905A (en) * | 2018-10-02 | 2020-04-09 | 日本電信電話株式会社 | Back-scattered light amplification device, optical pulse test apparatus, back-scattered light amplification method, and optical pulse test method |
JP2021515192A (en) * | 2018-03-14 | 2021-06-17 | ブンデスリパブリック ドイチュラント、バートリィトン ドエヒ デン ブンデスミニスター ファ ヴィルトシャフト ウント エネルジー、ディザ バートリィトン ドエヒ デン プレジデンテン デァ ブンデスアンスタルツ ファ マトリアルフォシュン ウント−プロフン (ビーエーエム) | A method for determining changes in physical parameters with the correct code and a device equipped with an optical fiber. |
-
1987
- 1987-09-29 JP JP24251887A patent/JPS6486032A/en active Pending
Cited By (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0282133A (en) * | 1988-09-19 | 1990-03-22 | Fujikura Ltd | Method and instrument for measuring strain of optical fiber |
JPH10111171A (en) * | 1996-10-03 | 1998-04-28 | Hitachi Cable Ltd | Optical fiber strain distribution sensor |
US7679732B2 (en) | 2005-12-01 | 2010-03-16 | The University Of Tokyo | Optical-fiber-characteristic measuring apparatus and optical-fiber-characteristic measuring method |
GB2443993A (en) * | 2005-12-01 | 2008-05-21 | Yokogawa Electric Corp | Optical fibre characteristic measuring apparatus and optical fibre characteristic measuring method |
GB2443993B (en) * | 2005-12-01 | 2010-03-24 | Yokogawa Electric Corp | Optical fiber characteristic measuring apparatus and optical fiber characteristic measuring method |
GB2446761A (en) * | 2006-01-27 | 2008-08-20 | Yokogawa Electric Corp | Optical fiber characteristic measuring device and optical fiber characteristic measuring method |
GB2446761B (en) * | 2006-01-27 | 2010-02-17 | Yokogawa Electric Corp | Optical fiber characteristic measuring apparatus and optical fiber characteristic measuring method |
US7948614B2 (en) | 2006-01-27 | 2011-05-24 | The University Of Tokyo | Optical-fiber-characteristic measuring device and optical-fiber-characteristic measuring method |
JP4761258B2 (en) * | 2006-01-27 | 2011-08-31 | 国立大学法人 東京大学 | Optical fiber characteristic measuring apparatus and optical fiber characteristic measuring method |
WO2007086357A1 (en) * | 2006-01-27 | 2007-08-02 | The University Of Tokyo | Optical fiber characteristic measuring device and optical fiber characteristics measuring method |
US8928868B2 (en) | 2011-05-31 | 2015-01-06 | Nippon Telegraph And Telephone Corporation | Optical fiber line characteristic analysis apparatus and analysis method thereof |
WO2012165587A1 (en) * | 2011-05-31 | 2012-12-06 | 日本電信電話株式会社 | Device for analyzing optical fiber path characteristics and method for analyzing same |
CN103582808A (en) * | 2011-05-31 | 2014-02-12 | 日本电信电话株式会社 | Device for analyzing optical fiber path characteristics and method for analyzing same |
JP5521118B2 (en) * | 2011-05-31 | 2014-06-11 | 日本電信電話株式会社 | Optical line characteristic analyzer and analysis method thereof |
CN102620857A (en) * | 2012-03-27 | 2012-08-01 | 南京大学 | Brillouin optical time domain reflectometer for single-photon detection based on edged filter method |
JP2017049255A (en) * | 2015-09-02 | 2017-03-09 | リオス テクノロジー ゲーエムベーハーLIOS Technology GmbH | Device and method for spatially resolved measurement of temperature and/or strain by brillouin scattering |
US9933322B2 (en) | 2015-09-02 | 2018-04-03 | Lios Technology Gmbh | Device and method for spatially resolved measurement of temperature strain, or both by brillouin scattering |
CN107560644A (en) * | 2017-07-20 | 2018-01-09 | 全球能源互联网研究院 | A kind of distribution type optical fiber sensing equipment perceived based on signal multiplexing with demodulating |
CN107560644B (en) * | 2017-07-20 | 2020-01-14 | 全球能源互联网研究院 | Distributed optical fiber sensing device based on signal multiplexing perception and demodulation |
JP2021515192A (en) * | 2018-03-14 | 2021-06-17 | ブンデスリパブリック ドイチュラント、バートリィトン ドエヒ デン ブンデスミニスター ファ ヴィルトシャフト ウント エネルジー、ディザ バートリィトン ドエヒ デン プレジデンテン デァ ブンデスアンスタルツ ファ マトリアルフォシュン ウント−プロフン (ビーエーエム) | A method for determining changes in physical parameters with the correct code and a device equipped with an optical fiber. |
JP2020056905A (en) * | 2018-10-02 | 2020-04-09 | 日本電信電話株式会社 | Back-scattered light amplification device, optical pulse test apparatus, back-scattered light amplification method, and optical pulse test method |
WO2020071128A1 (en) * | 2018-10-02 | 2020-04-09 | 日本電信電話株式会社 | Backscattering optical amplification device, optical pulse testing device, backscattering optical amplification method and optical pulse testing method |
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