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公开(公告)号：US4758060A
公开(公告)日：1988-07-19
申请号：US922026
申请日：1986-10-22
CPC分类号： G02B6/12004 , G01R15/241
摘要： A high voltage sensor using an integrated optical Mach-Zehnder device is disclosed. A capacitive divider for sensing the electric field is connected to an electrode adjacent one of the parallel waveguide sections, while a second electrode adjacent the other section is grounded. The capacitive divider may be fabricated on the same substrate as the Mach-Zehnder device. Two similar devices which can be immersed in the electric field are also disclosed. In one case the device uses a Mach-Zehnder device having waveguides of the slab type. In this variation materials having two different refractive indices, both of which are low relative to the high index slab form the superstrates of the parallel waveguide sections. In the second variation, a Mach-Zehnder device having waveguides of the diffusion type is used. Thin films of high refractive index material are deposited over the two parallel waveguide sections, with the thickness and/or refractive index of the two film sections being different.
摘要翻译： 公开了一种使用集成光学马赫 - 曾德设备的高压传感器。 用于感测电场的电容分压器连接到邻近一个平行波导部分的电极，而与另一部分相邻的第二电极接地。 电容分压器可以制造在与Mach-Zehnder器件相同的衬底上。 还公开了可以浸入电场中的两个类似的装置。 在一种情况下，该装置使用具有板式波导的马赫 - 曾德尔（Mach-Zehnder）装置。 在这种变化中，具有两个不同折射率的材料，两者相对于高折射率板都较低，形成平行波导部分的顶板。 在第二变型中，使用具有扩散型波导的马赫 - 曾德尔（Mach-Zehnder）装置。 高折射率材料的薄膜沉积在两个平行的波导部分上，两个薄膜部分的厚度和/或折射率不同。
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公开(公告)号：US3938039A
公开(公告)日：1976-02-10
申请号：US495839
申请日：1974-08-08
CPC分类号： G01R15/241
摘要： A voltage measuring device is described which is suitable for application to encapsulated, high-voltage switching installations which include an inner conductor surrounded by a grounded metallic outer tube. The device utilizes the fact that an electric field exists between the inner conductor and metallic outer tube. It includes means for widening a portion of the outer tube to thereby form a space for locating certain portions of the measuring device. The device itself includes an electro-optical component, such as a Kerr or Pockels cell which is positioned in the space defined by the widening means, at a distance from the inner conductor which is approximately equal to the distance that the outer tube is located from said inner conductor. A metal layer is positioned on that side of the electro-optical component which is away from the inner conductor. The metal layer is electrically connected to the grounded, metallic outer tube. The presence of the layer insures that the lines of the electric field between the inner conductor and the outer tube are directed through the electrooptical component, perpendicular to the metal layer. A source of polarized light is directed towards said electro-optical component. As the light passes through the cell the plane of polarization of the light is rotated as a function of the electric field intensity. Thus the exiting light becomes a measure of the voltage between the inner conductor and the outer tube. The shifted, polarized light exiting from the electro-optical component is then processed by an optical evaluation device which produces an electrical output proportional to the amount of shift of the plane of polarization of the light.
摘要翻译： 描述了适用于封装的高压开关装置的电压测量装置，其包括被接地的金属外管包围的内导体。 该装置利用在内导体和金属外管之间存在电场的事实。 它包括用于加宽外管的一部分从而形成用于定位测量装置的某些部分的空间的装置。 该装置本身包括诸如克尔或普克尔斯电池的电光部件，该电光学部件定位在由加宽装置限定的空间中，距离内导体一定距离，该距离大约等于外管所处的距离 内导体。 金属层位于远离内部导体的电光部件的该侧。 金属层电连接到接地的金属外管。 层的存在确保内导体和外管之间的电场线垂直于金属层引导通过电光部件。 偏振光源指向所述电光部件。 当光通过电池时，光的偏振平面作为电场强度的函数旋转。 因此，出射光成为内部导体和外部管之间的电压的量度。 然后从光电部件出射的偏移的偏振光通过光学评估装置进行处理，所述光学评估装置产生与光的偏振面的偏移量成比例的电输出。
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公开(公告)号：US20180328964A1
公开(公告)日：2018-11-15
申请号：US15948163
申请日：2018-04-09
申请人： Tektronix, Inc.
CPC分类号： G01R13/347 , G01R1/06788 , G01R15/241
摘要： The disclosure includes an electro-optical sensor. The electro-optical sensor includes a test signal input to receive a test signal from a device under test (DUT). A bias circuit is employed to generate a bias signal. The electro-optical sensor also includes a Mach-Zehnder Modulator (MZM) that employs an optical input, an optical output, and a bias input. The MZM is configured to receive an optical carrier signal via the optical input. The MZM also receives both the test signal and the bias signal on the bias input. The MZM modulates the test signal from the bias input onto the optical carrier to generate an optical signal while operating in a mode selected by the bias signal. The MZM also outputs the optical signal over the optical output.
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公开(公告)号：US20170248653A1
公开(公告)日：2017-08-31
申请号：US15268184
申请日：2016-09-16
申请人： Tektronix, Inc.
IPC分类号： G01R31/308 , G01R19/00 , G01R15/22
CPC分类号： G01R31/308 , G01R1/071 , G01R15/22 , G01R15/241 , G01R15/247 , G01R19/0084 , G02F1/0123
摘要： A sensor head of a test and measurement instrument can include an input configured to receive an input signal from a device under test (DUT), an optical voltage sensor having signal input electrodes and control electrodes or one set of electrodes, wherein the input is connected to the signal input electrodes, and a bias control unit connected to the control electrodes and configured to reduce an error signal or the input signal bias control signal are electrically combined and applied to a single set of electrodes.
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公开(公告)号：US20160363833A1
公开(公告)日：2016-12-15
申请号：US14133390
申请日：2013-12-18
申请人： Tektronix, Inc.
CPC分类号： G02F1/225 , G01R15/241 , G02F1/0121 , G02F1/0123 , G02F1/0316 , G02F2001/212 , G02F2201/122
摘要： An electro-optic modulator of a test and measurement system. The electro-optic modulator includes a first electrode, a second electrode with identical electrical characteristics as the first electrode and an optical waveguide between the first electrode and the second electrode. The first electrode and the second electrode present a balanced load to a device under test.
摘要翻译： 一种测试和测量系统的电光调制器。 电光调制器包括第一电极，具有与第一电极相同的电特性的第二电极和在第一电极和第二电极之间的光波导。 第一电极和第二电极对被测器件提供平衡负载。
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96.发明申请ELECTRIC FIELD VECTOR DETECTION METHOD AND ELECTRIC FIELD VECTOR DETECTION DEVICE 有权电场矢量检测方法和电场矢量检测装置公开(公告)号：US20160146666A1
公开(公告)日：2016-05-26
申请号：US14950617
申请日：2015-11-24
CPC分类号： G01J1/44 , G01J1/0429 , G01J1/4228 , G01J3/0224 , G01J3/0262 , G01J3/42 , G01J3/433 , G01J3/4338 , G01J4/04 , G01J2001/4242 , G01N21/3581 , G01R15/241 , G01R29/0871
摘要： In this electric field vector detection method, an electro-optic crystal, where a (111) surface of an optical isotropic medium is cut out, is used as a terahertz wave detection element. The method includes: causing polarization of probe light of ultrashort pulsed light to be circular polarization; allowing the probe light having circular polarization to enter the terahertz wave detection element and probing the terahertz wave; modulating the probe light, having probed the terahertz wave, by a rotating analyzer and detecting the modulated probe light by a photodetector; performing lock-in detection of a detection signal from the photodetector by a lock-in detector using a frequency based on a rotational frequency of the rotating analyzer as a reference signal; and detecting an electric field vector of the terahertz wave based on a detection signal from the lock-in detector.
摘要翻译： 在该电场矢量检测方法中，将光学各向同性介质的（111）面切出的电光晶体用作太赫兹波检测元件。 该方法包括：使超短脉冲光的探测光的极化成圆极化; 允许具有圆极化的探测光进入太赫兹波检测元件并探测太赫兹波; 通过旋转分析仪调制探测太赫兹波的探测器，并通过光电检测器检测调制的探测光; 通过锁定检测器使用基于旋转分析仪的旋转频率的频率作为参考信号来执行来自光电检测器的检测信号的锁定检测; 以及基于来自锁定检测器的检测信号检测太赫兹波的电场矢量。
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97.发明授权Low-noise and high bandwidth electric field sensing with silicon-polymer integrated photonics and low drive voltage modulator fiber-based antenna link 有权具有硅聚合物集成光子学和低驱动电压调制器光纤的天线链路的低噪声和高带宽电场感测公开(公告)号：US08909003B1
公开(公告)日：2014-12-09
申请号：US12690070
申请日：2010-01-19
IPC分类号： G02B6/00
CPC分类号： G02F1/065 , G01R15/241 , G01R29/0885 , G02F1/011 , G02F2202/105
摘要： An optical low drive voltage modulator electric field sensor device includes an electric field antenna. A low drive voltage modulator has an electrical voltage input electrically coupled to the electric field antenna, a light input, and a modulated light output. The optical low drive voltage modulator electric field sensor is configured to provide an optical output signal at the modulated light output having an optical parameter responsive to an electric field at the electric field antenna. The optical low drive voltage modulator electric field sensor device can also be configured to provide an RF output signal at a location physically remote from said antenna, where the RF output signal is responsive to an electromagnetic wave received at a remote antenna.
摘要翻译： 光学低驱动电压调制器电场传感器装置包括电场天线。 低驱动电压调制器具有电耦合到电场天线的电压输入，光输入和调制光输出。 光学低驱动电压调制器电场传感器被配置为在调制光输出处提供响应于电场天线处的电场的光学参数的光输出信号。 光学低驱动电压调制器电场传感器装置还可以被配置为在物理上远离所述天线的位置处提供RF输出信号，其中RF输出信号响应于在远程天线处接收的电磁波。
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98.发明授权Handheld fiber optic current and voltage monitor for high voltage applications 有权用于高压应用的手持式光纤电流和电压监视器公开(公告)号：US08797019B2
公开(公告)日：2014-08-05
申请号：US13609685
申请日：2012-09-11
申请人： Xuekang Shan , Jin Hao
发明人： Xuekang Shan , Jin Hao
IPC分类号： G01R19/00
CPC分类号： G01R15/245 , G01R15/142 , G01R15/241 , G01R35/005
摘要： A handheld fiber optic current and voltage monitor for applications in high voltage environment. A light source generates constant optical signal that is split by a fiber optic splitter into two paths. One path feeds a DMEMS based current sensor that is driven by a current to voltage conversion device that converts the current in a conductor into a voltage. The other path goes to a DMEMS based electric field sensor driven by a condenser antenna that converts the electric field near a high voltage power line conductor into a voltage. The output optical signals from the current sensor and the electric field sensor are received by respective optical receivers and converted into electric signals. A signal processing unit processes the signals, and a display screen displays the results. All these are mounted on a plastic mast for handheld operation.
摘要翻译： 手持光纤电流和电压监视器，适用于高压环境。 光源产生由光纤分路器分成两条路径的恒定光信号。 一条路径馈送基于DMEMS的电流传感器，该电流传感器由电流至电压转换装置驱动，其将导体中的电流转换成电压。 另一路径是由电容式天线驱动的基于DMEMS的电场传感器，其将高压电力线导体附近的电场转换为电压。 来自电流传感器和电场传感器的输出光信号由相应的光接收器接收并转换为电信号。 信号处理单元对信号进行处理，显示画面显示结果。 所有这些都安装在塑料桅杆上进行手持操作。
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公开(公告)号：US08441249B2
公开(公告)日：2013-05-14
申请号：US12940684
申请日：2010-11-05
IPC分类号： G01R33/02
CPC分类号： G01R15/241
摘要： Two transversely poled fibers are disclosed which can be wound around a holder with their poling directions being anti-parallel. A coupling exchanges the polarization directions of the modes of the fibers. Thermally and mechanically caused birefringence changes can thereby be substantially cancelled, while electrical field induced birefringence changes can be added, to provide a more robust high voltage measuring device.
摘要翻译： 公开了两个横向极化纤维，其可以卷绕在保持器上，其极化方向是反平行的。 耦合交换纤维的模式的偏振方向。 因此，可以基本上消除热和机械引起的双折射变化，同时可以增加电场诱导的双折射变化，以提供更鲁棒的高电压测量装置。
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公开(公告)号：US08405823B2
公开(公告)日：2013-03-26
申请号：US13269402
申请日：2011-10-07
申请人： Paul L. Pfaff
发明人： Paul L. Pfaff
CPC分类号： G01R31/311 , G01R15/241 , G01R31/2653 , G01R31/2656 , G03H2260/53
摘要： An improved optical infrared and ultraviolet imaging system including a first imaging device that is sensitive to a light which creates a photocurrent or changes in electric field or stresses within the first imaging device and a second infrared imaging device that is illuminated by light incident to the first imaging device which is reflected to the second imaging device which images optical changes in phase or polarization or amplitude or birefringence within the first imaging device.
摘要翻译： 一种改进的光学红外和紫外成像系统，包括对产生光电流的光敏感的第一成像装置或第一成像装置内的电场或应力的变化以及由入射到第一成像装置的光照亮的第二红外成像装置 成像装置被反射到第二成像装置，其对第一成像装置内的相位或偏振或幅度或双折射的光学变化进行成像。
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