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1. 发明授权

US07881566B2 Optical pulse generator for distributed temperature sensing operating at a characteristic wavelength in a range between 1050 nm and 1090 nm 有权
标题翻译：用于分布式温度感测的光脉冲发生器在1050nm和1090nm之间的范围内的特征波长下工作
公开(公告)号：US07881566B2
公开(公告)日：2011-02-01
申请号：US11817821
申请日：2006-01-10
申请人： Gareth P. Lees , Arthur H. Hartog , Peter C. Wait
发明人： Gareth P. Lees , Arthur H. Hartog , Peter C. Wait
IPC分类号： G02B6/00 , G01K11/00 , G01J3/00 , H01S3/10
CPC分类号： G01K11/32
摘要： An improved laser source for use in a distributed temperature sensing (DTS) system (and DTS systems employing the same) includes a laser device and drive circuitry that cooperate to emit an optical pulse train at a characteristic wavelength between 1050 nm and 1090 nm. An optical amplifier, which is operably coupled to the laser device, is adapted to amplify the optical pulse train for output over the optical fiber sensor of the DTS system. In the preferred embodiment, the laser device operates at 1064 nm and outputs the optical pulse train via an optical fiber pigtail that is integral to its housing. The optical power of the optical pulse train generated by the laser source is greater than 100 mW, and preferably greater than 1 W, at a preferred pulse repetition frequency range between 1 and 50 kHz, and at a preferred pulse width range between 2 and 100 ns.
摘要翻译：用于分布式温度感测（DTS）系统（以及采用该系统的DTS系统）的改进的激光源包括激光装置和驱动电路，其协作以在1050nm和1090nm之间的特征波长发射光脉冲串。可操作地耦合到激光装置的光放大器适于放大光脉冲串，以便在DTS系统的光纤传感器上输出。在优选实施例中，激光器件工作在1064nm，并通过与其外壳成一体的光纤引线输出光脉冲串。在1至50kHz之间的优选脉冲重复频率范围内，并且在优选的脉冲宽度范围为2至100之间，由激光源产生的光脉冲串的光功率大于100mW，优选大于1W ns。

2. 发明申请

US20080246947A1 Optical Pulse Generator for Distributed Temperature Sensing Operating at a Characteristic Wavelength in a Range Between 1050 Nm and 1090 Nm 有权
标题翻译：用于分布式温度传感的光学脉冲发生器在1050 Nm至1090 Nm之间的范围内的特征波长下工作
公开(公告)号：US20080246947A1
公开(公告)日：2008-10-09
申请号：US11817821
申请日：2006-01-10
申请人： Gareth P. Lees , Arthur H. Hartog , Peter C. Wait
发明人： Gareth P. Lees , Arthur H. Hartog , Peter C. Wait
IPC分类号： G01J3/00 , H01S3/00
CPC分类号： G01K11/32
摘要： An improved laser source for use in a distributed temperature sensing (DTS) system (and DTS systems employing the same) includes a laser device and drive circuitry that cooperate to emit an optical pulse train at a characteristic wavelength between 1050 nm and 1090 nm. An optical amplifier, which is operably coupled to the laser device, is adapted to amplify the optical pulse train for output over the optical fiber sensor of the DTS system. In the preferred embodiment, the laser device operates at 1064 nm and outputs the optical pulse train via an optical fiber pigtail that is integral to its housing. The optical power of the optical pulse train generated by the laser source is greater than 100 mW, and preferably greater than 1 W, at a preferred pulse repetition frequency range between 1 and 50 kHz, and at a preferred pulse width range between 2 and 100 ns.
摘要翻译：用于分布式温度感测（DTS）系统（以及采用该系统的DTS系统）的改进的激光源包括激光装置和驱动电路，其协作以在1050nm和1090nm之间的特征波长发射光脉冲串。可操作地耦合到激光装置的光放大器适于放大光脉冲串，以便在DTS系统的光纤传感器上输出。在优选实施例中，激光器件工作在1064nm，并通过与其外壳成一体的光纤引线输出光脉冲串。在1至50kHz之间的优选脉冲重复频率范围内，并且在优选的脉冲宽度范围为2至100之间，由激光源产生的光脉冲串的光功率大于100mW，优选大于1W ns。

3. 发明授权

US08408064B2 Distributed acoustic wave detection 有权
标题翻译：分布式声波检测
公开(公告)号：US08408064B2
公开(公告)日：2013-04-02
申请号：US12611952
申请日：2009-11-04
申请人： Arthur H. Hartog , Douglas Miller , Kamal Kader , Gareth P. Lees , Graeme Hilton , Stephen Mullens
发明人： Arthur H. Hartog , Douglas Miller , Kamal Kader , Gareth P. Lees , Graeme Hilton , Stephen Mullens
IPC分类号： G01N29/24 , G01N29/44
CPC分类号： E21B47/123 , E21B47/101 , G01V1/226 , G01V1/44 , G01V8/16
摘要： A distributed acoustic wave detection system and method is provided. The system may include a fiber optic cable deployed in a well and configured to react to pressure changes resulting from a propagating acoustic wave and an optical source configured to launch interrogating pulses into the fiber optic cable. In addition, the system may include a receiver configured to detect coherent Rayleigh noise produced in response to the interrogating pulses. The CRN signal may be use to track the propagation of the acoustic wave in the well.
摘要翻译：提供了一种分布式声波检测系统和方法。系统可以包括部署在井中并被配置为对由传播声波引起的压力变化和被配置为向盘状光缆发射询问脉冲的光源的光纤电缆。此外，系统可以包括被配置为检测响应于询问脉冲而产生的相干瑞利噪声的接收机。 CRN信号可以用于跟踪声波在井中的传播。

4. 发明授权

US08077314B2 Measuring a characteristic of a multimode optical fiber 有权
标题翻译：测量多模光纤的特性
公开(公告)号：US08077314B2
公开(公告)日：2011-12-13
申请号：US12241303
申请日：2008-09-30
申请人： Dylan Davies , Arthur H. Hartog , Graeme Hilton , Gareth P. Lees
发明人： Dylan Davies , Arthur H. Hartog , Graeme Hilton , Gareth P. Lees
IPC分类号： G01N21/00
CPC分类号： G01K11/32 , G01D5/35364 , G01M11/319
摘要： To measure a characteristic of a multimode optical fiber, a light pulse source produces a light pulse for transmission into the multimode optical fiber. A spatial filter passes a portion of Brillouin backscattered light from the multimode optical fiber that is responsive to the light pulse. Optical detection equipment detects the portion of the Brillouin backscattered light passed by the spatial filter.
摘要翻译：为了测量多模光纤的特性，光脉冲源产生用于传输到多模光纤的光脉冲。空间滤波器将来自响应于光脉冲的多模光纤的布里渊背散射光的一部分通过。光学检测设备检测由空间滤光片通过的布里渊背散射光的部分。

5. 发明授权

US07504618B2 Distributed sensing in an optical fiber using brillouin scattering 有权
标题翻译：使用布里渊散射的光纤中的分布式感测
公开(公告)号：US07504618B2
公开(公告)日：2009-03-17
申请号：US11772997
申请日：2007-07-03
申请人： Arthur H. Hartog , Gareth P. Lees
发明人： Arthur H. Hartog , Gareth P. Lees
IPC分类号： G01J1/42 , G01N21/00 , G01B11/16
CPC分类号： G01J3/4412 , G01D5/35364 , G01K11/32
摘要： To perform distributed sensing with an optical fiber using Brillouin scattering, a light pulse is transmitted into the optical fiber, where the transmitted light pulse has a first frequency. Backscattered light and optical local oscillator light are combined, where the backscattered light is received from the optical fiber in response to the transmitted light pulse, and where the optical local oscillator light has a second frequency. A frequency offset is caused to be present between the first frequency of the transmitted light pulse and the second frequency of the optical local oscillator light, where the frequency offset is at least 1 GHz less than a Brillouin frequency shift of the backscattered light. Spectra representing Stokes and anti-Stokes components of the backscattered light are acquired, where the Stokes and anti-Stokes components are separated by a frequency span that is based on the frequency offset.
摘要翻译：为了使用布里渊散射使用光纤执行分布式感测，将光脉冲传输到光纤中，其中透射光脉冲具有第一频率。组合后向散射光和光学本地振荡器光，其中响应于透射的光脉冲从光纤接收反向散射光，并且其中光学本地振荡器光具有第二频率。使得频率偏移存在于透射光脉冲的第一频率和光学本地振荡器光的第二频率之间，其中频偏比背散射光的布里渊频移小至少1GHz。获取表示反向散射光的斯托克斯和反斯托克斯分量的光谱，其中斯托克斯和反斯托克斯分量由基于频率偏移的频率间隔分开。

6. 发明申请

US20090008536A1 DISTRIBUTED SENSING IN AN OPTICAL FIBER USING BRILLOUIN SCATTERING 有权
标题翻译：使用白光散射在光纤中进行分布式感测
公开(公告)号：US20090008536A1
公开(公告)日：2009-01-08
申请号：US11772997
申请日：2007-07-03
申请人： Arthur H. Hartog , Gareth P. Lees
发明人： Arthur H. Hartog , Gareth P. Lees
IPC分类号： G02B27/42 , G01J1/04
CPC分类号： G01J3/4412 , G01D5/35364 , G01K11/32
摘要： To perform distributed sensing with an optical fiber using Brillouin scattering, a light pulse is transmitted into the optical fiber, where the transmitted light pulse has a first frequency. Backscattered light and optical local oscillator light are combined, where the backscattered light is received from the optical fiber in response to the transmitted light pulse, and where the optical local oscillator light has a second frequency. A frequency offset is caused to be present between the first frequency of the transmitted light pulse and the second frequency of the optical local oscillator light, where the frequency offset is at least 1 GHz less than a Brillouin frequency shift of the backscattered light. Spectra representing Stokes and anti-Stokes components of the backscattered light are acquired, where the Stokes and anti-Stokes components are separated by a frequency span that is based on the frequency offset.
摘要翻译：为了使用布里渊散射使用光纤执行分布式感测，将光脉冲传输到光纤中，其中透射光脉冲具有第一频率。组合后向散射光和光学本地振荡器光，其中响应于透射的光脉冲从光纤接收反向散射光，并且其中光学本地振荡器光具有第二频率。使得频率偏移存在于透射光脉冲的第一频率和光学本地振荡器光的第二频率之间，其中频偏比背散射光的布里渊频移小至少1GHz。获取表示反向散射光的斯托克斯和反斯托克斯分量的光谱，其中斯托克斯和反斯托克斯分量由基于频率偏移的频率间隔分开。

7. 发明申请

US20090132183A1 SYSTEM AND METHOD FOR MONITORING STRUCTURES 审中-公开
标题翻译：用于监测结构的系统和方法
公开(公告)号：US20090132183A1
公开(公告)日：2009-05-21
申请号：US12282191
申请日：2007-02-22
申请人： Arthur H. Hartog , Andrew Strong , Graeme Hilton , Gareth P. Lees
发明人： Arthur H. Hartog , Andrew Strong , Graeme Hilton , Gareth P. Lees
IPC分类号： G01L1/24 , G01L5/00
CPC分类号： G01M11/086 , G01D5/35303 , G01H9/004 , G01K1/143 , G01K11/32
摘要： A technique facilitates the monitoring of elongate structures. An elongate structure is combined with an optical fiber deployed along the structure. An interrogation system is operatively joined with the optical fiber to input and monitor optical signals to determine any changes in parameters related to the structure.
摘要翻译：一种技术有助于细长结构的监测。细长结构与沿着结构部署的光纤组合。询问系统与光纤可操作地连接以输入和监视光信号，以确定与该结构相关的参数的任何变化。

8. 发明申请

US20090097015A1 MEASURING A CHARACTERISTIC OF A MULTIMODE OPTICAL FIBER 有权
标题翻译：测量多模光纤的特性
公开(公告)号：US20090097015A1
公开(公告)日：2009-04-16
申请号：US12241303
申请日：2008-09-30
申请人： Dylan Davies , Arthur H. Hartog , Graeme Hilton , Gareth P. Lees
发明人： Dylan Davies , Arthur H. Hartog , Graeme Hilton , Gareth P. Lees
IPC分类号： G01N21/17
CPC分类号： G01K11/32 , G01D5/35364 , G01M11/319
摘要： To measure a characteristic of a multimode optical fiber, a light pulse source produces a light pulse for transmission into the multimode optical fiber. A spatial filter passes a portion of Brillouin backscattered light from the multimode optical fiber that is responsive to the light pulse. Optical detection equipment detects the portion of the Brillouin backscattered light passed by the spatial filter.
摘要翻译：为了测量多模光纤的特性，光脉冲源产生用于传输到多模光纤的光脉冲。空间滤波器将来自响应于光脉冲的多模光纤的布里渊背散射光的一部分通过。光学检测设备检测由空间滤光片通过的布里渊背散射光的部分。

9. 发明申请

US20100107754A1 DISTRIBUTED ACOUSTIC WAVE DETECTION 有权
标题翻译：分布式声波检测
公开(公告)号：US20100107754A1
公开(公告)日：2010-05-06
申请号：US12611952
申请日：2009-11-04
申请人： Arthur H. Hartog , Douglas Miller , Kamal Kader , Gareth P. Lees , Graeme Hilton , Stephen Mullens
发明人： Arthur H. Hartog , Douglas Miller , Kamal Kader , Gareth P. Lees , Graeme Hilton , Stephen Mullens
IPC分类号： E21B47/14
CPC分类号： E21B47/123 , E21B47/101 , G01V1/226 , G01V1/44 , G01V8/16
摘要： A distributed acoustic wave detection system and method is provided. The system may include a fiber optic cable deployed in a well and configured to react to pressure changes resulting from a propagating acoustic wave and an optical source configured to launch interrogating pulses into the fiber optic cable. In addition, the system may include a receiver configured to detect coherent Rayleigh noise produced in response to the interrogating pulses. The CRN signal may be use to track the propagation of the acoustic wave in the well.
摘要翻译：提供了一种分布式声波检测系统和方法。系统可以包括部署在井中并被配置为对由传播声波引起的压力变化和被配置为向盘状光缆发射询问脉冲的光源的光纤电缆。此外，系统可以包括被配置为检测响应于询问脉冲而产生的相干瑞利噪声的接收机。 CRN信号可以用于跟踪声波在井中的传播。

10. 发明授权

US07304725B2 Optical time domain reflectometry 有权
标题翻译：光时域反射
公开(公告)号：US07304725B2
公开(公告)日：2007-12-04
申请号：US10502616
申请日：2003-01-30
申请人： Arthur H. Hartog , Peter C. Wait
发明人： Arthur H. Hartog , Peter C. Wait
IPC分类号： G01N21/00
CPC分类号： G01M11/319 , G01M11/3109 , H04B10/071
摘要： An optical time domain reflectometry apparatus for sensing a parameter in a region of interest is characterized in that the optical fiber includes a first section into which optical radiation at the probe wavelength is launched and a second section deployed in the region of interest. The first section has a higher intensity threshold for the onset of non-linear effects than the second section. The source launches the optical radiation into the first section at an intensity lower than the non-linear effects intensity threshold of the first section but higher than the non-linear effects intensity threshold of the second section. The attenuation characteristics of the first section are chosen such that the intensity of the optical radiation at the probe wavelength that reaches the second section is below the threshold for the onset of non-linear effects of the second section.
摘要翻译：用于感测感兴趣区域中的参数的光学时域反射测量装置的特征在于，光纤包括其中发射探针波长的光辐射的第一部分和在感兴趣区域中部署的第二部分。第一部分具有比第二部分更高的非线性效应开始的强度阈值。光源以比第一部分的非线性效应强度阈值低的强度将光辐射发射到第一部分中，但高于第二部分的非线性效应强度阈值。选择第一部分的衰减特性使得到达第二部分的探针波长处的光辐射的强度低于第二部分的非线性效应开始的阈值。

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