JP7412597B2 - ダイナミックレンジを使用した分散型音響検知の改善 - Google Patents
ダイナミックレンジを使用した分散型音響検知の改善 Download PDFInfo
- Publication number
- JP7412597B2 JP7412597B2 JP2022567807A JP2022567807A JP7412597B2 JP 7412597 B2 JP7412597 B2 JP 7412597B2 JP 2022567807 A JP2022567807 A JP 2022567807A JP 2022567807 A JP2022567807 A JP 2022567807A JP 7412597 B2 JP7412597 B2 JP 7412597B2
- Authority
- JP
- Japan
- Prior art keywords
- optical
- dynamic range
- signal
- fiber
- rayleigh
- 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.)
- Active
Links
- 239000000835 fiber Substances 0.000 claims description 29
- 230000003287 optical effect Effects 0.000 claims description 27
- 230000001427 coherent effect Effects 0.000 claims description 24
- 230000001629 suppression Effects 0.000 claims description 15
- 238000001514 detection method Methods 0.000 claims description 11
- 239000000523 sample Substances 0.000 claims description 6
- 239000013307 optical fiber Substances 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims 1
- 238000011144 upstream manufacturing Methods 0.000 claims 1
- 238000000253 optical time-domain reflectometry Methods 0.000 description 30
- 238000010586 diagram Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 9
- 230000006870 function Effects 0.000 description 8
- 238000004088 simulation Methods 0.000 description 4
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000001069 Raman spectroscopy Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 2
- 238000010009 beating Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/11—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on acousto-optical elements, e.g. using variable diffraction by sound or like mechanical waves
- G02F1/125—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on acousto-optical elements, e.g. using variable diffraction by sound or like mechanical waves in an optical waveguide structure
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H9/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means
- G01H9/004—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means using fibre optic sensors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
- G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
- G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
- G01D5/353—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre
- G01D5/35338—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre using other arrangements than interferometer arrangements
- G01D5/35354—Sensor working in reflection
- G01D5/35358—Sensor working in reflection using backscattering to detect the measured quantity
- G01D5/35361—Sensor working in reflection using backscattering to detect the measured quantity using elastic backscattering to detect the measured quantity, e.g. using Rayleigh backscattering
-
- 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
-
- 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
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2201/00—Features of devices classified in G01N21/00
- G01N2201/08—Optical fibres; light guides
- G01N2201/088—Using a sensor fibre
- G01N2201/0886—Using a sensor fibre and using OTDR
-
- 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]
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Optics & Photonics (AREA)
- Optical Communication System (AREA)
- Optical Transform (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Description
Claims (5)
- 分散型光ファイバ検知/分散型音響検知システムであって、
ある長さの光検知ファイバと、
前記光検知ファイバと光通信する分散型光ファイバ検知/分散型音響検知のインタロゲータとを有し、
前記インタロゲータは、
光プローブパルスを生成し、該光プローブパルスを前記光検知ファイバに導入するためのレーザ光源と、
前記光検知ファイバを行き来するプローブパルスから生じるレイリー後方散乱を受信するコヒーレント受信機と、
コヒーレント検出前の前記レイリー後方散乱のダイナミックレンジを抑制するダイナミックレンジ抑制器とを有し、
前記ダイナミックレンジ抑制器は、コヒーレント検出前の前記レイリー後方散乱を増幅する増幅器のポンプ電流を制御するフィードバックループを含み、
前記フィードバックループは、前記レイリー後方散乱の信号の光包絡線を回復する包絡線検出器と、その後に前記レイリー後方散乱の信号振幅包絡線の逆数に実質的に等しいポンプ電流を生成する信号調整器とを含む、システム。 - 請求項1に記載のシステムにおいて、
前記コヒーレント受信機の前段に配置された光振幅変調器であって、前記レイリー後方散乱の信号が前記コヒーレント受信機の前に当該光振幅変調器に印加されるように配置された光振幅変調器をさらに含む、システム。 - 請求項2に記載のシステムにおいて、
前記光振幅変調器のための駆動電圧が、前記レイリー後方散乱の信号の光包絡線を回復する包絡線検出器と、その後にバイアス電圧および振幅変動を提示する前記光振幅変調器のための駆動電圧を生成する信号調整器とを含むフィードバックループ内で生成される、システム。 - 請求項3に記載のシステムにおいて、
前記信号調整器は、アナログまたはデジタル電子機器に実装され、追加のダイナミックレンジ抑制を生成するように構成された凹型非線形関数を提示する、システム。 - 請求項1に記載のシステムにおいて、
ダイナミックレンジ抑制は、アナログ-デジタル変換の前に、コヒーレント受信機光検出器の出力から凹状非線形関数を通すことにより、電気信号を用いて行われる、システム。
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US202063023288P | 2020-05-12 | 2020-05-12 | |
US63/023,288 | 2020-05-12 | ||
US17/316,621 US20210356776A1 (en) | 2020-05-12 | 2021-05-10 | Distributed acoustic sensing using dynamic range suppression |
US17/316,621 | 2021-05-10 | ||
PCT/US2021/031667 WO2021231344A1 (en) | 2020-05-12 | 2021-05-11 | Improved distributed acoustic sensing using dynamic range suppression |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2023525995A JP2023525995A (ja) | 2023-06-20 |
JP7412597B2 true JP7412597B2 (ja) | 2024-01-12 |
Family
ID=78513361
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2022567807A Active JP7412597B2 (ja) | 2020-05-12 | 2021-05-11 | ダイナミックレンジを使用した分散型音響検知の改善 |
Country Status (3)
Country | Link |
---|---|
US (1) | US20210356776A1 (ja) |
JP (1) | JP7412597B2 (ja) |
WO (1) | WO2021231344A1 (ja) |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20080316494A1 (en) | 2007-06-22 | 2008-12-25 | Schlumberger Technology Corporation | Controlling a dynamic signal range in an optical time domain reflectometry |
US20100014071A1 (en) | 2008-07-17 | 2010-01-21 | Schlumberger Technology Corporation | Frequency-scanned optical time domain reflectometry |
US20130222811A1 (en) | 2010-11-11 | 2013-08-29 | Fotech Solutions Limited | Distributed Optical Fibre Sensor |
US20160187223A1 (en) | 2014-08-28 | 2016-06-30 | Adelos, Inc. | Noise management for optical time delay interferometry |
JP2017003339A (ja) | 2015-06-08 | 2017-01-05 | 日本電信電話株式会社 | ブリルアン散乱測定装置及びブリルアン散乱測定方法 |
US20180348086A1 (en) | 2016-04-15 | 2018-12-06 | Viavi Solutions Inc. | Brillouin and rayleigh distributed sensor |
JP2019060666A (ja) | 2017-09-25 | 2019-04-18 | 沖電気工業株式会社 | 光ファイバセンシングシステム及び光ファイバセンシング方法 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB8520827D0 (en) * | 1985-08-20 | 1985-09-25 | York Ventures & Special Optica | Fibre-optic sensing devices |
WO2005025056A1 (ja) * | 2003-08-29 | 2005-03-17 | Sharp Kabushiki Kaisha | 自動利得制御増幅装置、受信機器及び無線通信機器 |
CN104009795A (zh) * | 2013-02-25 | 2014-08-27 | 中兴通讯股份有限公司 | Otdr光路检测装置及方法 |
GB2536052A (en) * | 2015-03-06 | 2016-09-07 | Schlumberger Holdings | Optical Sensor |
EP3842737A1 (en) * | 2019-12-27 | 2021-06-30 | Nederlandse Organisatie voor toegepast- natuurwetenschappelijk Onderzoek TNO | System and method for optical strain measurement |
-
2021
- 2021-05-10 US US17/316,621 patent/US20210356776A1/en active Pending
- 2021-05-11 WO PCT/US2021/031667 patent/WO2021231344A1/en active Application Filing
- 2021-05-11 JP JP2022567807A patent/JP7412597B2/ja active Active
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20080316494A1 (en) | 2007-06-22 | 2008-12-25 | Schlumberger Technology Corporation | Controlling a dynamic signal range in an optical time domain reflectometry |
US20100014071A1 (en) | 2008-07-17 | 2010-01-21 | Schlumberger Technology Corporation | Frequency-scanned optical time domain reflectometry |
US20130222811A1 (en) | 2010-11-11 | 2013-08-29 | Fotech Solutions Limited | Distributed Optical Fibre Sensor |
US20160187223A1 (en) | 2014-08-28 | 2016-06-30 | Adelos, Inc. | Noise management for optical time delay interferometry |
JP2017003339A (ja) | 2015-06-08 | 2017-01-05 | 日本電信電話株式会社 | ブリルアン散乱測定装置及びブリルアン散乱測定方法 |
US20180348086A1 (en) | 2016-04-15 | 2018-12-06 | Viavi Solutions Inc. | Brillouin and rayleigh distributed sensor |
JP2019060666A (ja) | 2017-09-25 | 2019-04-18 | 沖電気工業株式会社 | 光ファイバセンシングシステム及び光ファイバセンシング方法 |
Also Published As
Publication number | Publication date |
---|---|
WO2021231344A1 (en) | 2021-11-18 |
JP2023525995A (ja) | 2023-06-20 |
US20210356776A1 (en) | 2021-11-18 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN108286992B (zh) | 基于数字双啁啾脉冲调制的分布式光纤声传感装置及方法 | |
US11959799B2 (en) | Extinction ratio free phase sensitive optical time domain reflectometry based distributed acoustic sensing system | |
EP1708388A1 (en) | Communicating information | |
US11320302B2 (en) | High-rate distributed acoustic sensing using high-power light pulses | |
CN108827447B (zh) | 一种异频双脉冲cotdr传感装置和方法 | |
CN108288999A (zh) | 基于瑞利散射的降噪分布式光纤水听的应用 | |
US11193801B2 (en) | Amplifier dynamics compensation for brillouin optical time-domain reflectometry | |
JP7412597B2 (ja) | ダイナミックレンジを使用した分散型音響検知の改善 | |
CA2615327A1 (en) | Optical fiber characteristic measuring system | |
Costa et al. | Reaching pε/√ Hz sensitivity in a distributed optical fiber strain sensor | |
CN111928938A (zh) | 长距离分布式光纤振动检测系统 | |
CN104457808A (zh) | 一种实现φ-OTDR系统长距离监测的方法及系统 | |
US20230152151A1 (en) | Colorless distributed fiber optic sensing / distributed vibration sensing | |
CN114459593B (zh) | 一种提高光纤振动系统探测距离的方法 | |
CN212320747U (zh) | 一种线性调频的分布式光纤传感装置 | |
Everard | Novel signal processing techniques for enhanced OTDR sensors | |
CN115752696A (zh) | 基于前向传输的分布式光纤振动传感系统及信号处理方法 | |
Xu et al. | Speech enhancement based on array-processing-assisted distributed fiber acoustic sensing | |
CN111912439A (zh) | 一种线性调频的分布式光纤传感装置及方法 | |
Deng et al. | Quasi-Distributed Acoustic Sensing Based on Orthogonal Codes and Empirical Mode Decomposition | |
Uyar et al. | The pulse shape effect on signal-to-noise ratio for φ-otdr systems | |
Vandborg et al. | Modelling the Brillouin spectrum in Raman amplifier assisted Brillouin OTDR | |
RU2768226C9 (ru) | Система распределенного акустического зондирования, основанная на фазочувствительной оптической рефлектометрии во временной области без влияния коэффициента ослабления | |
Liu et al. | A new measurement scheme for delay parameters in TDM fiber optic interferometric sensor network | |
Piñeiro et al. | Compensation of Laser Phase Noise in Coded Distributed Acoustic Sensing |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20221122 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20230905 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20231107 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20231219 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20231226 |
|
R150 | Certificate of patent or registration of utility model |
Ref document number: 7412597 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |