公开(公告)号：US12038276B2

公开(公告)日：2024-07-16

申请号：US18344651

申请日：2023-06-29

Applicant: Huvr, Inc

Inventor： Zbigniew Sobolewski

IPC: G01B9/02 ,  G01B9/02015 ,  G01C19/72

CPC classification number: G01B9/02023 ,  G01C19/727 ,  G01C19/728

Abstract: An optical fiber ring interferometer is provided, which is based on a common light path for two or more light beam pairs preferably originated from two or more light sources of a substantially different spectrum or from a single light source split spectrum and whereas each light beam of a specific pair is propagating in relative opposite directions, wherein at least one pair of light beams is utilized to detect acousto-mechanical events and to provide information regarding location and other characteristics of detected environmental disturbance.

公开(公告)号：US07746476B2

公开(公告)日：2010-06-29

申请号：US11776452

申请日：2007-07-11

Applicant: Joseph R. Demers ,  Ka Kha Wong ,  Ronald T. Logan, Jr.

Inventor： Joseph R. Demers ,  Ka Kha Wong ,  Ronald T. Logan, Jr.

IPC: G01C19/72

CPC classification number: G01C19/728 ,  G01C19/725

Abstract: A fiber optic gyroscope including an optical circulator in the path of said first and second beams for providing polarized first and second beams of identical polarization. A phase modulator couples the first and second beams to the first and second end respectively of the fiber loop, and couples for receiving the return first and second beams from the second and first ends respectively of the fiber loop. First and second photodiodes are coupled to the optical circulator for receiving the optical signal from the first and second return beams.

Abstract translation: 一种光纤陀螺仪，包括在所述第一和第二光束的路径中的光循环器，用于提供具有相同极化的偏振的第一和第二光束。 相位调制器将第一和第二光束分别耦合到光纤回路的第一和第二端，并且耦合用于从光纤回路的第二端和第一端分别接收返回的第一和第二光束。 第一和第二光电二极管被耦合到光循环器，用于从第一和第二返回光束接收光信号。

公开(公告)号：US5576534A

公开(公告)日：1996-11-19

申请号：US282754

申请日：1994-07-29

Applicant: Juergen K. P. Flamm ,  Daniel A. Tazartes

Inventor： Juergen K. P. Flamm ,  Daniel A. Tazartes

IPC: G01C19/72 ,  G01B9/02

CPC classification number: G01C19/728

Abstract: A digital controller produces control data signals for application to each of three fiber optic rotation sensors in a triaxial rotation sensing system. The digital controller also produces strobe signals corresponding to each fiber optic rotation sensor. The digital controller sequentially provides first, second and third strobe signals that activate the analog converters sequentially to apply modulating signals to the three fiber optic rotation sensors. The system further includes apparatus for providing modulation cycles to keep all three fiber optic rotation sensors active simultaneously. Sampling apparatus samples each sensor sequentially during a .tau. period and feedback modulation control data signals are applied sequentially to the three sensors during the .tau. period for each sensor when the sensor was sampled. Feedback modulation control data signals are isolated from each fiber optic rotation sensor except for the .tau. periods in which it is sampled.

Abstract translation: 数字控制器产生用于应用于三轴旋转感测系统中的三个光纤旋转传感器中的每一个的控制数据信号。 数字控制器还产生对应于每个光纤旋转传感器的选通信号。 数字控制器顺序提供第一，第二和第三选通信号，其顺序地激活模拟转换器以将调制信号施加到三个光纤旋转传感器。 该系统还包括用于提供调制周期以保持所有三个光纤旋转传感器同时有效的装置。 采样设备在tau周期期间依次对每个传感器进行采样，并且在传感器被采样时，每个传感器的τ周期期间，反馈调制控制数据信号被顺序地应用于三个传感器。 反馈调制控制数据信号与每个光纤旋转传感器隔离，除了其采样的τT周期。

公开(公告)号：US4815853A

公开(公告)日：1989-03-28

申请号：US105178

申请日：1987-10-05

Applicant: Herve Lefevre

Inventor： Herve Lefevre

IPC: G01C19/64 ,  G01C19/72 ,  G01B9/02

CPC classification number: G01C19/728

Abstract: A three-axis fiber-optic interferometer as applicable in particular to a gyrometer comprises three optical fibers forming rings disposed along three different axes. The three optical fibers are fed by a light beam emitted by a single source. A single interference photodetector receives the light beam after transit through the different fibers. Coupling devices couple the second fiber to the first fiber and the third fiber to the second fiber.

Abstract translation: 特别适用于陀螺仪的三轴光纤干涉仪包括沿着三个不同轴设置的形成环的三根光纤。 三根光纤由单个光源发射的光束进给。 单个干涉光电检测器在穿过不同的光纤后接收光束。 耦合装置将第二纤维与第一纤维和第三纤维耦合到第二纤维。

公开(公告)号：US20230417534A1

公开(公告)日：2023-12-28

申请号：US18344575

申请日：2023-06-29

Applicant: Huvr, Inc

Inventor： Zbigniew Sobolewski

IPC: G01B9/02015 ,  G01C19/72

CPC classification number: G01B9/02023 ,  G01C19/728 ,  G01C19/727

Abstract: An optical fiber ring interferometer is provided, which is based on a common light path for two or more light beam pairs preferably originated from two or more light sources of a substantially different spectrum or from a single light source split spectrum and whereas each light beam of a specific pair is propagating in relative opposite directions, wherein at least one pair of light beams is utilized to detect acousto-mechanical events and to provide information regarding location and other characteristics of detected environmental disturbance.

公开(公告)号：US11656081B2

公开(公告)日：2023-05-23

申请号：US17071697

申请日：2020-10-15

Applicant: Anello Photonics, Inc.

Inventor： Mario Paniccia ,  Qing Tan ,  Mike Horton

IPC: G01C19/72 ,  G02B6/12 ,  G02B6/293

CPC classification number: G01C19/727 ,  G01C19/722 ,  G01C19/728 ,  G02B6/12007 ,  G02B6/29338 ,  G02B2006/12138

Abstract: Novel small-footprint integrated photonics optical gyroscopes disclosed herein can provide ARW in the range of 0.05°/√Hr or below (e.g. as low as 0.02°/√Hr), which makes them comparable to fiber optic gyroscopes (FOGs) in terms of performance, at a much lower cost. The low bias stability value in the integrated photonics optical gyroscope corresponds to a low bias estimation error (in the range of 1.5°/Hr or even lower) that is crucial for safety-critical applications, such as calculating heading for autonomous vehicles, drones, aircrafts etc. The integrated photonics optical gyroscopes may be co-packaged with mechanical gyroscopes into a hybrid inertial measurement unit (IMU) to provide high-precision angular measurement for one or more axes.

公开(公告)号：US09823076B2

公开(公告)日：2017-11-21

申请号：US15023747

申请日：2014-09-23

Applicant: IXBLUE

Inventor： Frederic Guattari ,  Cedric Molucon ,  Sebastien Ferrand ,  Eric Ducloux

IPC: G01C19/72 ,  G02B6/293

CPC classification number: G01C19/728 ,  G01C19/721 ,  G02B6/29347

Abstract: An interferometric system with multi-axis optical fiber and a method for processing an interferometric signal in such a system, the multi-axis interferometric system includes a light source (1); a plurality of N optical-fiber coils (11, 12), a first optical separation element (3) capable of splitting the source beam (100) into a first split beam (140) and a second split beam (240); shared phase-modulation element (4); a photodetector (2) and a signal-processing system (800). The N optical-fiber coils (11, 12) are connected in parallel, the coils having respective transit times T1, T2, . . . TN that all differ from one another, and the signal-processing system (800) is capable of processing the interferometric signal (720) detected by the shared photodetector (2) as a function of the respective transit times in the various coils.

公开(公告)号：US5854678A

公开(公告)日：1998-12-29

申请号：US672249

申请日：1996-06-28

Applicant: Ren-Young Liu ,  Ralph A. Bergh

Inventor： Ren-Young Liu ,  Ralph A. Bergh

IPC: G01C19/72

CPC classification number: G01C19/728

Abstract: A gyroscope having three fiber optic loops for sensing rates of rotation in three axes orthogonal to one another. The gyroscope has one or two detectors and one source that is shared among the three fiber optic sensing loop subsystems with a special multi-coupler configuration. Also, portions of the rotation rate signal processing electronics, whether an open or closed loop configuration, are shared among the three sensing loops. The gyroscope may be a single mode optical fiber depolarized configuration or a polarization maintaining optical fiber configuration.

Abstract translation: 具有三个光纤回路的陀螺仪，用于感测三个轴线之间的旋转速度。 陀螺仪具有一个或两个检测器和一个在具有特殊多耦合器配置的三个光纤感测环路子系统之间共享的检测器。 此外，旋转速率信号处理电子设备的部分，无论是开路还是闭环配置，都在三个感测回路中共享。 陀螺仪可以是单模光纤去极化配置或偏振保持光纤配置。

公开(公告)号：US5818589A

公开(公告)日：1998-10-06

申请号：US712194

申请日：1991-06-07

Applicant: Joachim Scholz ,  Michael Oswald

Inventor： Joachim Scholz ,  Michael Oswald

IPC: G01C19/72 ,  G01C19/64

CPC classification number: G01C19/728

Abstract: To measure absolute rotations in several directions in space with the aid of interferometers, one interferometer is required for each direction in space. According to the invention, it is proposed to supply a device consisting of several interferometers from a common light source and to switch only the phase modulation impressed on the light rather than the light paths, using time-division multiplexing. The output signals from the interferometers are detected and evaluated with a single detector and evaluating unit.

Abstract translation: 为了通过干涉仪测量空间中的几个方向的绝对旋转，空间中的每个方向都需要一个干涉仪。 根据本发明，提出了从公共光源提供由几个干涉仪组成的装置，并且仅使用时分多路复用仅切换照射在光而不是光路上的相位调制。 用单个检测器和评估单元检测和评估来自干涉仪的输出信号。

公开(公告)号：US5189488A

公开(公告)日：1993-02-23

申请号：US796868

申请日：1991-11-25

Applicant: John G. Mark ,  George A. Pavlath ,  Daniel A. Tazartes

Inventor： John G. Mark ,  George A. Pavlath ,  Daniel A. Tazartes

IPC: G01C19/72

CPC classification number: G01C19/72 ,  G01C19/728

Abstract: Single and multiple axis fiber optic gyroscope systems employ orthogonal sequences to minimize the effects of both intra and inter-axis crosstalk. Sequences for driving electro-optic modulators are derived by examination of underlying primary and secondary demodulation sequences. Such underlying sequences are examined for orthogonality in accordance with a number of selection rules. When the selection rules are satisfied, the corresponding modulation sequences for driving the gyro(s) are identified and applied. By selecting the modulation waveforms in accordance with orthogonality criteria, one is assured of mean-zero bias errors within a predetermined number of loop transit times.

Abstract translation: 单轴和多轴光纤陀螺仪系统采用正交序列来最小化内部和轴间串扰的影响。 用于驱动电光调制器的序列是通过检查潜在的主要和次要解调序列得出的。 根据多个选择规则检查这样的底层序列的正交性。 当满足选择规则时，识别并应用用于驱动陀螺仪的相应调制序列。 通过根据正交性标准选择调制波形，可以确定预定数量的循环传送时间内的平均零偏置误差。