公开(公告)号：US07254289B2

公开(公告)日：2007-08-07

申请号：US10539144

申请日：2003-12-11

申请人： Peter C. Wait ,  Arthur H. Hartog

发明人： Peter C. Wait ,  Arthur H. Hartog

IPC分类号： G02B6/00

CPC分类号： H04B10/2525

摘要： The present invention comprises the use of a fiber in a sensing optical fiber system operated in a region of negative chromatic dispersion to minimize modulation instability thereby enabling the identification and measurement of the information-carrying signals. The present invention may be used in a variety of sensing environments.

摘要翻译： 本发明包括在负色散区域中操作的感测光纤系统中的光纤的使用以最小化调制不稳定性，从而能够识别和测量信息携带信号。 本发明可以用于各种感测环境中。

公开(公告)号：US07595865B2

公开(公告)日：2009-09-29

申请号：US11872092

申请日：2007-10-15

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。

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。

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。

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。