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1. 发明授权

US11326884B2 Stimulated brillouin ring laser gyroscope with optical frequency offset of counterpropagating pump laser signals 有权
公开(公告)号：US11326884B2
公开(公告)日：2022-05-10
申请号：US16789404
申请日：2020-02-12
申请人： California Institute of Technology
发明人： Kerry Vahala , Jiang Li , Yu-Hung Lai , Myoung-Gyun Suh , Seung Hoon Lee
IPC分类号： G01C19/66 , G01C19/72 , H01S3/00 , H01S3/094 , H01S3/30 , G01C19/64
摘要： A disk resonator is pumped by counterpropagating pump signals to produce corresponding counterpropagating Brillouin laser signals. The pump laser optical frequencies are separated by a frequency offset ΔνP but excite the same nominal resonator optical mode; the Brillouin laser optical frequencies are separated by a beat frequency ΔνL with 0

2. 发明授权

US10812197B1 Pulsed Sagnac loop phase-modulated microwave photonic link 有权
公开(公告)号：US10812197B1
公开(公告)日：2020-10-20
申请号：US16533899
申请日：2019-08-07
申请人： The University of Massachusetts
发明人： Yifei Li
IPC分类号： H04B10/548 , G01C19/64
摘要： A modified Sagnac loop phase-modulated microwave photonic link with a pulsed optical source is disclosed. Unlike a conventional Sagnac loop, the optical phase offset of the loop can be adjusted to quadrature by applying a synchronized modulation signal to an in-loop phase shifting phase modulator. Thereby, it exemplifies the fundamental RF response.

3. 发明授权

US10375813B2 On-chip trapped ultracold atom sensor allowing rotational velocity to be measured 有权
公开(公告)号：US10375813B2
公开(公告)日：2019-08-06
申请号：US15778605
申请日：2016-11-24
申请人： THALES
发明人： Matthieu Dupont-Nivet , Sylvain Schwartz
IPC分类号： G01C19/64 , H05H3/00
摘要： Ultra-cold atom sensor for measuring a rotational velocity along a measurement axis comprises: means designed to generate a first and a second ultra-cold atom trap, one trap making it possible to immobilize a cloud of ultra-cold atoms in an internal state different from the other trap, at a predetermined distance from the measurement plane, the means comprising, at least one first and one second waveguide that are designed to propagate microwaves with angular frequencies ωa and ωb, the waveguides being non-secant and positioned symmetrically about an axis called the axis of symmetry, conductive wires integrated into the chip and designed to be flowed through by DC currents, the means being configured to modify the energy of the ultra-cold atoms in such a way as to create a potential minimum for the ultra-cold atoms in the internal state |a> and a potential minimum for the ultra-cold atoms in the internal state |b>, thus forming the first and second ultra-cold atom traps, and to move the traps along a closed path, traveled in one direction by the ultra-cold atoms of the first trap and in the opposite direction by the ultra-cold atoms of the second trap.

4. 发明申请

US20180066942A1 FULLY RECIPROCAL ATOMIC INTERFEROMETRIC GYROSCOPE 审中-公开
公开(公告)号：US20180066942A1
公开(公告)日：2018-03-08
申请号：US15418990
申请日：2017-01-30
申请人： Honeywell International Inc.
发明人： Robert Compton
IPC分类号： G01C19/64
CPC分类号： G01C19/64 , G01C19/58
摘要： A fully reciprocal atomic interferometric gyroscope is provided. The fully reciprocal atomic interferometric gyroscope includes an atomic chamber, a plurality of lasers, a controller and measurement sensor. The atomic chamber is used to hold an atom cloud. The plurality of lasers are selectively positioned to selectively direct laser beams into the atomic chamber. The controller is configured to control the plurality lasers to initially cool the atom cloud to a point where at least one optical lattice can be formed that is used to move wave function halves of atoms of the atom cloud along split wave function paths that form an interferometer cycle. The measurement sensor is configured to conduct a phase readout of a wave function upon the completion of at least one interferometer cycle around the split wave function paths.

5. 发明申请

US20170315054A1 NONLINEAR INTERFEROMETER SYSTEMS AND METHODS 审中-公开
公开(公告)号：US20170315054A1
公开(公告)日：2017-11-02
申请号：US15582178
申请日：2017-04-28
申请人： UT-Battelle, LLC
发明人： Joseph M. Lukens , Nicholas A. Peters , Raphael C. Pooser
IPC分类号： G01N21/45 , G01J3/26 , G01C19/64
CPC分类号： G01N21/45 , G01B9/02003 , G01B9/02007 , G01B2290/55 , G01C19/64 , G01J3/26
摘要： Nonlinear interferometers include a nonlinear optical medium that is situated to produce a conjugate optical beam in response to a pump beam and a probe beam. The pump, probe, and conjugate beams propagate displaced from each other along a common optical path. One of the beams is selectively phase shifted, and the beams are then returned to the nonlinear medium, with the selectively phase shift beam phase shifted again. The nonlinear medium provides phase sensitive gain to at least one of the probe or conjugate beams, and the amplified beam is detected to provide an estimate of the phase shift.

6. 发明授权

US09671228B2 Floating current mirror for RLG discharge control 有权
公开(公告)号：US09671228B2
公开(公告)日：2017-06-06
申请号：US14520019
申请日：2014-10-21
申请人： Honeywell International Inc.
发明人： John F. Ackerman
IPC分类号： G01C19/64 , G01C19/66 , H02J1/00 , H01S3/097
CPC分类号： G01C19/665 , G01C19/661 , H01S3/09705 , H02J1/00
摘要： A ring laser gyroscope (RLG) assembly comprises an RLG block comprising: a first anode; a second anode; a cathode; and a cavity. The RLG assembly further comprises a current supply circuit coupled to the RLG block. The current supply circuit comprises a high voltage power supply to provide a high voltage signal; a first current path coupled between the high voltage power supply and the first anode to provide a first current to the first anode; and a second current path coupled between the high voltage power supply and the second anode to provide a second current to the second anode. The second current path is configured to mirror the first current such that the second current approximately matches the first current. Each component in the second current path is configured to operate based on power derived only from the high voltage signal.

7. 发明授权

US09557173B1 Integrated laser vibrometer MEMS micro-shell gyroscope 有权
标题翻译：集成激光测微计MEMS微壳陀螺仪
公开(公告)号：US09557173B1
公开(公告)日：2017-01-31
申请号：US14548222
申请日：2014-11-19
申请人： HRL Laboratories, LLC
发明人： Raviv Perahia , Richard J. Joyce
IPC分类号： G01C19/64 , G01C19/56 , G01C25/00
CPC分类号： G01C19/56 , G01C19/5684 , G01C25/00
摘要： A gyroscope including a dielectric resonator, a laser vibrometer on a first side of the dielectric resonator, and a laser dump for redirecting or absorbing light received at the laser dump from the laser vibrometer, the laser dump on a second side of the dielectric resonator. A first distance between the dielectric resonator and the laser vibrometer ranges from 10 nm to 20 μm, and a second distance between the dielectric resonator and the laser dump ranges from 10 nm to 20 μm.
摘要翻译：包括介质谐振器的陀螺仪，在介质谐振器的第一侧上的激光振动计，以及用于重定向或吸收从激光振动计在激光转储处接收的光的激光器转台，在介质谐振器的第二侧上的激光器。介质谐振器和激光振动计之间的第一距离范围为10nm至20μm，并且介质谐振器和激光器放电之间的第二距离为10nm至20μm。

8. 发明授权

US08520214B2 Fiber optical gyroscope 有权
标题翻译：光纤陀螺仪
公开(公告)号：US08520214B2
公开(公告)日：2013-08-27
申请号：US13135975
申请日：2011-07-13
申请人： Allen D. Parks , Scott E. Spence
发明人： Allen D. Parks , Scott E. Spence
IPC分类号： G01C19/72 , G01C19/64 , G01J4/00
CPC分类号： G01C19/721
摘要： An optical gyroscope is provided for measuring a small angular difference. The gyroscope includes a laser, a pre-selection polarizer, a first beam splitter, a coil of optical fiber, a second beam splitter, a post-selection polarizer, a spectrometer and an analyzer. The laser emits a pulse beam of coherent photons. The beam has pulse duration σ. The pre-selection polarizer pre-selects the photons, and the first beam splitter separates the photons by their horizontal |+ and vertical |− polarization eigenstates. These beams are launched into a fiber optical coil of radius r, which preserves polarization. The coil rotates by a difference rotation angle Δθ. The second beam splitter recombines the polarized photon beams as they exit the coil. The post-selection polarizer post-selects the photons. The spectrometer captures the post-selected photons and measures the associated frequency translation δω. The analyzer determines the difference rotation angle as Δ ⁢ ⁢ θ = ± ( c ⁢ ⁢ σ 2 ⁢ tan ⁢ ⁢ χ 2 ⁢ r ) ⁢ δω , such that c is speed of light, and χ is post-selection polarization phase angle.
摘要翻译：提供了用于测量小角度差的光学陀螺仪。陀螺仪包括激光器，预选择偏振器，第一分束器，光纤线圈，第二分束器，后选择偏振器，光谱仪和分析器。激光发射相干光子的脉冲光束。光束具有脉冲持续时间sigma。预选偏振器预先选择光子，并且第一分束器将光子分开它们的水平| +和垂直| - 偏振本征态。这些光束被发射到半径为r的光纤线圈，其保持极化。线圈旋转差旋转角Deltatheta。当偏振光束离开线圈时，第二个分束器重新组合偏振光子束。后选择偏振器后选择光子。光谱仪捕获后选光子并测量相关的频率转换deltaomega。分析器将差分旋转角度确定为Δθpeθ=±（c·s·sigma2·tan·胡氏chi2r）·Δomega，使得c是光速，而chi是选择后偏振相位角。

9. 发明授权

US08514401B2 All-fiber interferometric fiber optic gyroscope having a minimum reciprocal configuration 有权
标题翻译：具有最小互逆配置的全光纤干涉光纤陀螺仪
公开(公告)号：US08514401B2
公开(公告)日：2013-08-20
申请号：US13042336
申请日：2011-03-07
申请人： Xinyue Wang , Ziyu Wang
发明人： Xinyue Wang , Ziyu Wang
IPC分类号： G01C19/64 , G01C19/72
CPC分类号： G01C19/72 , G01C19/727
摘要： An all-fiber interferometric fiber optic gyroscope having a minimum reciprocal configuration is described. The gyroscope comprises a light source, a light detector, a light source coupler, a fiber optic loop coupler, and a polarization maintaining fiber optic loop. A first port of the light source coupler is coupled, with polarization axis alignment, to an output end of the light source, and a second port of the light source coupler on the same side as the first port is coupled to the light detector. A third port on the other side of the light source coupler is coupled, with polarization axis alignment, to the fiber optic loop coupler, and the fiber optic loop coupler is coupled, with polarization axis alignment, to the polarization maintaining fiber optic loop. The light source splits the input light and polarizes the optical signal propagated along a transmission arm alone, where the first and third ports are on the same transmission arm.
摘要翻译：描述具有最小倒数配置的全光纤干涉光纤陀螺仪。陀螺仪包括光源，光检测器，光源耦合器，光纤环路耦合器和偏振保持光纤环路。光源耦合器的第一端口以偏振轴对准方式耦合到光源的输出端，并且光源耦合器的与第一端口相同侧的第二端口耦合到光检测器。光源耦合器的另一侧的第三端口与偏振轴对准耦合到光纤环路耦合器，并且光纤环路耦合器以偏振轴对准耦合到偏振保持光纤环路。光源分割输入光并使沿着传输臂单独传播的光信号偏振，其中第一和第三端口在相同的传输臂上。

10. 发明申请

US20120170045A1 Fixing System for the Optical Block of a Laser Gyroscope 有权
标题翻译：激光陀螺仪的光学块固定系统
公开(公告)号：US20120170045A1
公开(公告)日：2012-07-05
申请号：US13323666
申请日：2011-12-12
申请人： André BOURA
发明人： André BOURA
IPC分类号： G01C19/64
CPC分类号： G01C19/661
摘要： In a laser gyroscope, an activation wheel has a polygonal cylindrical hub formed by continuous assembly of vertical walls, wherein two adjacent walls of the cylindrical hub between them form a dihedron. Each radial plate of the activation wheel is connected to the cylindrical hub along the edge of a dihedron. The walls are formed with bulging portions, serving for plane-to-plane fixing of one face of the tulip to an optical block, and thin parts allowing a radial displacement degree of freedom of the fixing parts relative to the rim when there is a differential thermal expansion between the tulip and activation wheel. The activation wheel may be produced in a material having a thermal expansion coefficient higher than the tulip, for example steel, with plane-to-plane fixing of the tulip to the activation wheel hub, advantageously by screws, the assembly effectively accommodating the thermal expansion differential between the two materials.
摘要翻译：在激光陀螺仪中，激活轮具有通过连续组装垂直壁形成的多边形圆柱形轮毂，其中圆柱形轮毂之间的两个相邻的壁形成二面体。活化轮的每个径向板沿着二面体的边缘连接到圆柱形毂。壁形成有凸起部分，用于将郁金香的一个面的面对面固定到光学块，以及当存在差速器时允许固定部分相对于轮辋的径向位移自由度的薄部分郁金香和活化轮之间的热膨胀。活化轮可以通过具有高于郁金香（例如钢）的热膨胀系数的材料生产，有利地通过螺丝将郁金香平面对面地固定到活化轮毂，该组件有效地容纳热膨胀两种材料之间的差异。

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