专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

US20130058657A1 System and Method for Photonic Compressive Sampling 有权
标题翻译：光子压缩采样系统与方法
公开(公告)号：US20130058657A1
公开(公告)日：2013-03-07
申请号：US13597487
申请日：2012-08-29
申请人： Frank Bucholtz , Jonathan M. Nichols
发明人： Frank Bucholtz , Jonathan M. Nichols
IPC分类号： H04B10/00
CPC分类号： H04B10/00 , H03M1/1235 , H03M1/1265
摘要： A photonic compressive sampling system includes a photonic link with at least one electro-optic modulator that modulates a continuous wave optical energy with both an electrical analog signal and a pseudorandom bit sequence signal. A photodetector receives the modulated optical energy from the electro-optic modulator, and an electrical digitizer digitizes the output from the photodetector. The system enables signal recovery beyond the Nyquist limit of the digitizer. The signal being recovered has a sparse (low-dimensional) representation and the digitized samples are incoherent with this representation. An all-photonic system can faithfully recover a 1 GHz harmonic signal even when digitizing at 500 MS/s, well below the Nyquist rate.
摘要翻译：光子压缩采样系统包括具有至少一个电光调制器的光子链路，其利用电模拟信号和伪随机比特序列信号来调制连续波光能。光电检测器从电光调制器接收调制的光能，并且电数字转换器将来自光电检测器的输出数字化。该系统使信号恢复超过数字转换器的奈奎斯特极限。正在恢复的信号具有稀疏（低维）表示，并且数字化样本与该表示不相干。全光子系统即使在以500 MS / s数字化，远低于奈奎斯特速率的情况下，也能忠实地恢复1 GHz谐波信号。

2. 发明授权

US08385547B2 Method and apparatus for secure digital communications using chaotic signals 有权
标题翻译：使用混沌信号的安全数字通信的方法和装置
公开(公告)号：US08385547B2
公开(公告)日：2013-02-26
申请号：US11853012
申请日：2007-09-10
申请人： Gustavo K. Rohde , Jonathan M. Nichols , Frank Bucholtz
发明人： Gustavo K. Rohde , Jonathan M. Nichols , Frank Bucholtz
IPC分类号： H04L9/00
CPC分类号： H04L9/001 , H04K1/025 , H04L27/001
摘要： A system and method for encoding zero and one bits for transmission, including generating a first signal from a non-linear chaotic system to represent the one bit, with the signal's embedded vectors being within the non-linear system's attractor set, and generating a second signal from the non-linear system to represent the zero bit, with the signal's embedded vectors being outside the non-linear system's attractor set. The second signal encoding the zero bit can be generated by adding together two chaotic signals arising from the non-linear system initialized with different initial conditions, and weighting the second signal to have approximately the same energy as the first signal. One suitable chaotic systems is a Lorenz system. Systems and methods for decoding a transmitted stream of signals compare a detection statistic of the received stream of signals to a threshold value that depends on the chaotic system.
摘要翻译：一种用于对用于传输的零和一位进行编码的系统和方法，包括：生成来自非线性混沌系统的第一信号以表示所述一比特，所述信号的嵌入向量在所述非线性系统的吸引子集合内，并产生第二信号来自非线性系统的信号表示零位，信号的嵌入向量位于非线性系统的吸引子集之外。可以通过将从由不同初始条件初始化的非线性系统产生的两个混沌信号相加在一起来编码零比特的第二信号，并且将第二信号加权以具有与第一信号大致相同的能量。一个合适的混沌系统是Lorenz系统。用于解码发送的信号流的系统和方法将所接收的信号流的检测统计量与取决于混沌系统的阈值进行比较。

3. 发明授权

US09654208B2 System and method for photonic compressive sampling 有权
公开(公告)号：US09654208B2
公开(公告)日：2017-05-16
申请号：US13597487
申请日：2012-08-29
申请人： Frank Bucholtz , Jonathan M. Nichols
发明人： Frank Bucholtz , Jonathan M. Nichols
IPC分类号： H04B10/00 , H03M1/12
CPC分类号： H04B10/00 , H03M1/1235 , H03M1/1265
摘要： A photonic compressive sampling system includes a photonic link with at least one electro-optic modulator that modulates a continuous wave optical energy with both an electrical analog signal and a pseudorandom bit sequence signal. A photodetector receives the modulated optical energy from the electro-optic modulator, and an electrical digitizer digitizes the output from the photodetector. The system enables signal recovery beyond the Nyquist limit of the digitizer. The signal being recovered has a sparse (low-dimensional) representation and the digitized samples are incoherent with this representation. An all-photonic system can faithfully recover a 1 GHz harmonic signal even when digitizing at 500 MS/s, well below the Nyquist rate.

4. 发明申请

US20150215036A1 System and Method for Testing the Speed of a Microwave Photonics System 有权
标题翻译：用于测试微波光子系统速度的系统和方法
公开(公告)号：US20150215036A1
公开(公告)日：2015-07-30
申请号：US14682307
申请日：2015-04-09
申请人： Ross Schermer , Frank Bucholtz , Carl A. Villarruel
发明人： Ross Schermer , Frank Bucholtz , Carl A. Villarruel
IPC分类号： H04B10/079 , G01B9/02
CPC分类号： H04B10/0795 , G01B9/02 , G02B26/06 , G02B26/105 , G02B27/0087 , G02B27/4233 , G02B27/44 , H01P9/00 , H03B17/00 , H03H9/30
摘要： A system testing the speed of a microwave photonic system, having a Mach Zehnder interferometer that includes a first arm with a photonic system to be tested and an amplifier arranged to amplify the output of the photonic system, and a second arm with an attenuator configured to match the output power of the amplifier, with at least one filter arranged at the output of the Mach Zehnder interferometer, the filter having a pass band that includes the center frequency of a continuous wave microwave signal applied to the Mach Zehnder interferometer arms. A continuous wave microwave signal is applied to the input of the Mach Zehnder interferometer, a signal is applied to only the second arm with the photonic link, and the output of the bandpass filter is measured with an oscilloscope and a microwave power detector.
摘要翻译：一种测试微波光子系统的速度的系统，具有包括具有待测试的光子系统的第一臂的马赫策德干涉仪和布置成放大光子系统的输出的放大器，以及具有衰减器的第二臂，该衰减器被配置为匹配放大器的输出功率，至少一个滤波器布置在马赫曾德尔干涉仪的输出处，滤波器具有包括施加到马赫曾德尔干涉仪臂的连续波微波信号的中心频率的通带。连续波微波信号被施加到马赫策德尔干涉仪的输入端，仅通过光子链路将信号施加到第二臂，并用示波器和微波功率检测器测量带通滤波器的输出。

5. 发明申请

US20130010301A1 Microwave Photonic True-Time-Delay 有权
标题翻译：微波光子真时延迟
公开(公告)号：US20130010301A1
公开(公告)日：2013-01-10
申请号：US13487416
申请日：2012-06-04
申请人： Ross Schermer , Frank Bucholtz , Carl A. Villarruel
发明人： Ross Schermer , Frank Bucholtz , Carl A. Villarruel
IPC分类号： G02B27/44 , G01B9/02 , G02F1/29 , G02B26/08 , G02F1/33
CPC分类号： H04B10/0795 , G01B9/02 , G02B26/06 , G02B26/105 , G02B27/0087 , G02B27/4233 , G02B27/44 , H01P9/00 , H03B17/00 , H03H9/30
摘要： A true time delay system and method for an optical carrier signal modulated with a microwave signal. The system includes a beam deflector, with the optical signal being imaged onto the beam deflector, a stationary reflective diffractive grating arranged in a Littrow configuration, a focusing element arranged between the beam deflector and the stationary reflective diffractive grating. In operation, the beam deflector steers the optical beam across the clear aperture of the focusing element and the focusing element transmits the steered beam to the reflective diffractive grating. A change in optical path length experienced by the optical beam as the beam is scanned across the grating surface results in a relative phase delay in the optical beam. The beam deflector can be a rotating mirror, an acousto-optic beam deflector, or an electro-optic beam deflector. The focusing element can be a lens or a curved mirror.
摘要翻译：用微波信号调制的光载波信号的真时延系统和方法。该系统包括光束偏转器，光信号被成像到光束偏转器上，以Littrow配置布置的固定反射衍射光栅，设置在光束偏转器和固定反射衍射光栅之间的聚焦元件。在操作中，光束偏转器将光束转向穿过聚焦元件的透明孔径，并且聚焦元件将转向光束传输到反射衍射光栅。当光束横跨光栅表面扫描时，光束经历的光程长度的变化导致光束中的相对相位延迟。光束偏转器可以是旋转镜，声光束偏转器或电光束偏转器。聚焦元件可以是透镜或曲面镜。

6. 发明授权

US4739661A Fiber-optic accelerometer having cantilevered acceleration-sensitive mass 失效
标题翻译：具有悬臂加速度敏感质量的光纤加速度计
公开(公告)号：US4739661A
公开(公告)日：1988-04-26
申请号：US37271
申请日：1987-04-10
申请人： Frank Bucholtz , Alan Kersey , Anthony Dandridge
发明人： Frank Bucholtz , Alan Kersey , Anthony Dandridge
IPC分类号： G01P15/093 , G01P15/08 , G01H9/00
CPC分类号： G01P15/093
摘要： An optical fiber accelerometer with a rectilinear actuator, such as a push rod, acting on a middle region of an optical fiber pass tautly strung between two supports so that linear actuator motion during sensed acceleration causes lateral displacement of the pass's middle region causing nonlinear (i.e., quadratic) strain in the fiber. This nonlinear response allows the accelerometer to detect acceleration signals in a noisy, low-frequency signal environment through use of a high frequency signal carrier whose amplitude is determined by a low-frequency measured acceleration signal using an optical fiber interferometer.
摘要翻译：作用在光纤中间区域的直线致动器（例如推杆）的光纤加速度传感器紧紧地夹在两个支架之间，使得在感测加速过程中的线性致动器运动导致通过中间区域的横向位移导致非线性（即，二次）应变。该非线性响应允许加速度计通过使用其频率由使用光纤干涉仪的低频测量加速度信号确定的高频信号载波来检测噪声低频信号环境中的加速度信号。

7. 发明授权

US09356692B2 System and method for testing the speed of a microwave photonics system 有权
标题翻译：用于测试微波光子系统速度的系统和方法
公开(公告)号：US09356692B2
公开(公告)日：2016-05-31
申请号：US14682307
申请日：2015-04-09
申请人： Ross Schermer , Frank Bucholtz , Carl A. Villarruel
发明人： Ross Schermer , Frank Bucholtz , Carl A. Villarruel
IPC分类号： G01B9/02 , H04B10/079 , H01P9/00 , H03H9/30 , G02B27/00 , G02B26/10 , G02B27/44 , H03B17/00 , G02B26/06 , G02B27/42
CPC分类号： H04B10/0795 , G01B9/02 , G02B26/06 , G02B26/105 , G02B27/0087 , G02B27/4233 , G02B27/44 , H01P9/00 , H03B17/00 , H03H9/30
摘要： A system testing the speed of a microwave photonic system, having a Mach Zehnder interferometer that includes a first arm with a photonic system to be tested and an amplifier arranged to amplify the output of the photonic system, and a second arm with an attenuator configured to match the output power of the amplifier, with at least one filter arranged at the output of the Mach Zehnder interferometer, the filter having a pass band that includes the center frequency of a continuous wave microwave signal applied to the Mach Zehnder interferometer arms. A continuous wave microwave signal is applied to the input of the Mach Zehnder interferometer, a signal is applied to only the second arm with the photonic link, and the output of the bandpass filter is measured with an oscilloscope and a microwave power detector.
摘要翻译：一种测试微波光子系统的速度的系统，具有包括具有待测试的光子系统的第一臂的马赫策德干涉仪和布置成放大光子系统的输出的放大器，以及具有衰减器的第二臂，该衰减器被配置为匹配放大器的输出功率，至少一个滤波器布置在马赫曾德尔干涉仪的输出处，滤波器具有包括施加到马赫曾德尔干涉仪臂的连续波微波信号的中心频率的通带。连续波微波信号被施加到马赫策德尔干涉仪的输入端，仅通过光子链路将信号施加到第二臂，并用示波器和微波功率检测器测量带通滤波器的输出。

8. 发明授权

US5305075A Magnetostrictive transducer system having a three dual-strip fiber optic magnetostrictive transducers bonded into a single fiber mach-zehnder interferometer 失效
标题翻译：具有三个双带光纤磁致伸缩换能器的磁致伸缩传感器系统，其结合到单纤维马赫 - 泽德干涉仪
公开(公告)号：US5305075A
公开(公告)日：1994-04-19
申请号：US12140
申请日：1993-01-29
申请人： Frank Bucholtz , Kee P. Koo , Dominique M. Dagenais
发明人： Frank Bucholtz , Kee P. Koo , Dominique M. Dagenais
IPC分类号： G01R33/032 , G01B9/02
CPC分类号： G01R33/0327
摘要： The fiber-optic magnetostrictive transducer system consists of a sensing element having three dual-strip fiber optic magnetostrictive transducers bonded into a single fiber Mach-Zehnder interferometer operating single mode mounted in a symmetrical orthogonal geometry. The dual-strip fiber optic magnetostrictive transducers have predictable and consistent reproducibility and are comprised of a pair of field annealed metallic glass strips bonded to a coil of optical fiber. This structure is in turn mounted on a bobbin structure where the fiber ribbon is attached to the bobbin only at the two ends of the bobbin. This reduces the possible loading of the transducer due to friction between the optical fiber and the surface of the mounting structure and at the same time provide a long sensing fiber in contact with the magnetostrictive element for high sensitivity. The symmetrical orthogonal arrangement of the transducers minimizes magnetic crosstalk and the strip form of the transducer elements maintain high directional sensitivity.
摘要翻译：光纤磁致伸缩传感器系统由具有三个双带光纤磁致伸缩传感器的感测元件组成，该双重带状光纤磁致伸缩传感器结合到以单对称的正交几何形式安装的单模马赫 - 曾德干涉仪中。双带光纤磁致伸缩传感器具有可预测和一致的重现性，并且包括一对结合到光纤线圈的场退火的金属玻璃带。这种结构又安装在线轴结构上，其中纤维带仅在线轴的两端附接到线轴。这减少了由于光纤与安装结构的表面之间的摩擦而导致的传感器的可能负荷，并且同时提供了与磁致伸缩元件接触的长的感测光纤以实现高灵敏度。传感器的对称正交布置使磁串扰最小化，传感器元件的条形保持高方向灵敏度。

9. 发明授权

US5243403A Three-axis fiber optic vector magnetometer 失效
标题翻译：三轴光纤矢量磁强计
公开(公告)号：US5243403A
公开(公告)日：1993-09-07
申请号：US767955
申请日：1991-09-30
申请人： Kee P. Koo , George H. Sigel, Jr. , Frank Bucholtz
发明人： Kee P. Koo , George H. Sigel, Jr. , Frank Bucholtz
IPC分类号： G01R33/02 , G01R33/032
CPC分类号： G01R33/0327 , G01R33/0206
摘要： A three-axis fiber optic vector magnetometer is provided for measuring bothhe direction and magnitude of a DC or low frequency magnetic field. The magnetometer includes an optical interferometer system including a sensing fiber arm disposed with three respective sensing portions perpendicular to one another and attached to a uni-directional sensor material. The interferometer system also includes a reference fiber arm and a laser light source for generating and introducing a laser light into both of the arms. Respective biasing devices generate a reference AC magnetic bias and a respective reference frequency in the three sensing portions. A detecting device detects a reference light signal from the reference fiber arm and the magnetically altered sensing light signal from the sensing fiber arm and forms an interferometer output signal. Respective separating devices then separate the respective magnetically induced interferometer signals at respective ones of the frequencies and produce a respective output signal indicative thereof. This output signal is thus indicative of the magnetic field strength in the respective direction and a vector sum of the strengths shows the magnetic field direction. Preferably, the sensor material is an annealed amorphous metallic glass strip and the separating means are lock-in amplifiers in their phase sensitive detection modes. The biasing devices are also preferably respective Helmholtz coils and a feedback system is provided for feeding back the output of the respective separating devices to the respective biasing devices.
摘要翻译：提供三轴光纤矢量磁强计用于测量直流或低频磁场的方向和幅度。磁力计包括光学干涉仪系统，该光学干涉仪系统包括感测纤维臂，该感测纤维臂设置有彼此垂直的三个相应感测部分，并附接到单向传感器材料。干涉仪系统还包括参考光纤臂和激光光源，用于产生并将激光引入到两个臂中。相应的偏置装置在三个感测部分中产生参考AC磁偏置和相应的参考频率。检测装置检测来自参考纤维臂的参考光信号和来自感测纤维臂的磁改变的感测光信号，并形成干涉仪输出信号。然后，相应的分离装置在各个频率处分离相应的磁感应干涉仪信号，并产生指示其的相应输出信号。因此，该输出信号表示各方向的磁场强度，强度的矢量和表示磁场方向。优选地，传感器材料是退火的非晶金属玻璃带，分离装置是其相敏检测模式的锁定放大器。偏置装置还优选地是相应的亥姆霍兹线圈，并且提供反馈系统用于将各个分离装置的输出反馈到相应的偏置装置。

10. 依法登记的发明

USH864H Magnetic field sensor and method of manufacture for a subassembly thereof 失效
标题翻译：磁场传感器及其组件的制造方法
公开(公告)号：USH864H
公开(公告)日：1991-01-01
申请号：US464497
申请日：1990-01-12
申请人： Frank Bucholtz , Kee P. Koo , Anthony Dandridge , Alan B. Tveten
发明人： Frank Bucholtz , Kee P. Koo , Anthony Dandridge , Alan B. Tveten
IPC分类号： G01R33/032
CPC分类号： G01R33/0327
摘要： Improved passive and laser-conditioned magnetic field sensor of compact and integrated construction for enabling the detection of a magnetic field as well as an improved method of manufacture for assembling and selectively pretensioning a subassembly in order to provide an enhanced formation of the subassembly prior to use. The sensor is generally made up of a magnetic field sensing device, first and second fiber-optic elements, first and second couplers, a laser source and a combined detector and analysis means. The first and second couplers interconnect the first and second fiber-optic elements. The magnetic field sensing device is advantageously connected to one of the fiber-optic elements and is generally made up of a magneto-strictive material (MSM) of ribbon-like shape, a nonmagnetic substrate and a sensing element of optic fiber construction. This element is of predetermined and selective multistrand design between its ends and of generally serpentine shape. The sensing device is advantageously formed such that the MSM and the sensing element are uniformly and selectively pretensioned. As the result of this pretensioning, the MSM elongates when a magnetic field is detected thereby decreasing the elongation of the sensing element. Despite this decrease, the sensing element remains tensioned because of sufficient pretensioning and the phase shift in the laser as it is conducted through the optic fiber is detectable by the combined means.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式