公开(公告)号：US11846805B2

公开(公告)日：2023-12-19

申请号：US17942840

申请日：2022-09-12

Applicant: Anello Photonics, Inc.

Inventor： Avi Feshali ,  Mario Paniccia ,  Warren Bruce Jin

IPC: G02B6/12 ,  G02B6/28 ,  G02B6/26 ,  G02B6/42 ,  G02B6/125 ,  G01C19/72 ,  G02B6/122

CPC classification number: G02B6/125 ,  G01C19/72 ,  G02B6/1225 ,  G02B2006/12107 ,  G02B2006/12138

Abstract: Aspects of the present disclosure are directed to structural modifications introduced in a waveguide structure in order to more tightly pack adjacent waveguide turns in an optical gyroscope fabricated on a planar silicon platform as a photonic integrated circuit. Increasing number of turns of the gyroscope coil increases total waveguide length as well as enclosed area of the gyroscope loop, which translates to increased sensitivity to rotational measurement.

公开(公告)号：US20230185023A1

公开(公告)日：2023-06-15

申请号：US17942840

申请日：2022-09-12

Applicant: Anello Photonics, Inc.

Inventor： Avi Feshali ,  Mario Paniccia ,  Warren Bruce Jin

IPC: G02B6/125 ,  G01C19/72 ,  G02B6/122

CPC classification number: G02B6/125 ,  G01C19/72 ,  G02B6/1225 ,  G02B2006/12107

Abstract: Aspects of the present disclosure are directed to structural modifications introduced in a waveguide structure in order to more tightly pack adjacent waveguide turns in an optical gyroscope fabricated on a planar silicon platform as a photonic integrated circuit. Increasing number of turns of the gyroscope coil increases total waveguide length as well as enclosed area of the gyroscope loop, which translates to increased sensitivity to rotational measurement.

公开(公告)号：US09644966B2

公开(公告)日：2017-05-09

申请号：US14484102

申请日：2014-09-11

Applicant: Honeywell International Inc.

Inventor： Jeffrey Earl Lewis

IPC: G01C19/72 ,  G02B6/125 ,  G02B6/134 ,  G01C19/64 ,  G02F1/01 ,  G02F1/225

CPC classification number: G01C19/721 ,  G01C19/64 ,  G01C19/72 ,  G02B6/125 ,  G02B6/1342 ,  G02F1/0136 ,  G02F1/225

Abstract: An integrated optical circuit comprises a first waveguide section of a first material having a first index of refraction, a second waveguide section diffused with a second material, different from the first material, the second waveguide section having a second index of refraction; and a third waveguide section of the first material. A portion of the first waveguide section at a first interface is angled at a first angle and a portion of the second waveguide section is angled at the first angle. A portion of the first waveguide section at a second interface is angled at a second angle and a portion of the third waveguide section is angled at the second angle. The first angle and second angle are selected such that the angle of incidence of light at the first and second interfaces is greater than the Brewster's angle.

公开(公告)号：US09568319B2

公开(公告)日：2017-02-14

申请号：US14981808

申请日：2015-12-28

Applicant: ZHEJIANG UNIVERSITY

Inventor： Kaichen Song ,  Jinlong Yu ,  Lingyun Ye

IPC: G01C19/72

CPC classification number: G01C19/727 ,  G01C19/72

Abstract: The present invention provides an angular velocity detection method adopting a bi-directional full reciprocal coupling optoelectronic oscillator, which is implemented on an optical carrier microwave gyroscope. The optical carrier microwave gyroscope is a bi-directional resonant optical carrier microwave angular velocity measurement device sharing one optical fiber loop. The core of the method lies in that the Sagnac effect is sensed using a bi-directional optical carrier microwave resonant cavity, where the optical carrier microwave resonant cavity employs a coupling optoelectronic oscillator to achieve a bi-directional full reciprocal optical fiber path, and non-reciprocity error of the resonant cavity is eliminated effectively. The angular velocity detection method has features of high-precision, easy implementation and low costs.

Abstract translation: 本发明提供一种采用双向全双向耦合光电子振荡器的角速度检测方法，该光电子振荡器在光载波微波陀螺仪上实现。 光载波微波陀螺仪是共享一个光纤回路的双向谐振光载波微波角速度测量装置。 该方法的核心在于，使用双向光载波微波谐振腔感测Sagnac效应，其中光载波微波谐振腔采用耦合光电子振荡器来实现双向全互逆光纤路径， 有效消除了谐振腔的互易性误差。 角速度检测方法具有精度高，易于实现，成本低等特点。

公开(公告)号：US20150116722A1

公开(公告)日：2015-04-30

申请号：US14063456

申请日：2013-10-25

Applicant: Honeywell International Inc.

Inventor： Tiequn Qiu ,  Steven J. Sanders ,  Clarence Eugene Laskoskie

IPC: G01C19/72

CPC classification number: G01C19/72 ,  G01C19/721

Abstract: A dispersion managed interferometric fiber optic gyroscope comprising: a coupler coupled to the broadband light source via a first input fiber; an IOC comprising: a beamsplitter that directs the input signal to a first output and a second output; a combiner configured to combine a first return signal from the first output and a second return signal from the second output into a combined return signal; an integrated optical circuit input coupled to the coupler via a second input fiber; a fiber optic gyroscope sensing coil coupled to a first pigtail fiber and second pigtail fiber, the sensing coil comprising sensing fibers, wherein at least one dispersion slope of at least one of the first input fiber, second input fiber, first pigtail fiber, second pigtail fiber, and the sensing fibers is selected such that the signals at the IOC input has a second order coherence substantially equal to two.

Abstract translation: 一种色散管理干涉光纤陀螺仪，包括：经由第一输入光纤耦合到所述宽带光源的耦合器; IOC包括：分束器，其将输入信号引导到第一输出和第二输出; 组合器，其被配置为将来自第一输出的第一返回信号和来自第二输出的第二返回信号组合成组合返回信号; 经由第二输入光纤耦合到耦合器的集成光电路输入; 耦合到第一尾纤光纤和第二尾纤光纤的光纤陀螺仪感测线圈，所述感测线圈包括感测光纤，其中所述第一输入光纤，第二输入光纤，第一引出光纤，第二引出线中的至少一个的至少一个色散斜率 光纤，并且选择感测光纤使得IOC输入端的信号具有基本等于2的二阶相干性。

公开(公告)号：US08913246B2

公开(公告)日：2014-12-16

申请号：US13963937

申请日：2013-08-09

Applicant: Peking University

Inventor： Xinyue Wang ,  Ziyu Wang

IPC: G01C19/72 ,  G01C19/64

CPC classification number: G01C19/72 ,  G01C19/727

Abstract: An all-fiber interferometric fiber optic gyroscope having a minimum reciprocal configuration is described. The gyroscope comprises a polarized 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 counter-axially coupled to an output end of the polarized 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 counter-axially coupled to the fiber optic loop coupler, and the fiber optic loop coupler is counter-axially coupled to the polarization maintaining fiber optic loop. The light source splits the input polarized light and polarizes the optical signal propagated along a transmission arm alone, where the first and third ports are on the same transmission arm.

Abstract translation: 描述具有最小倒数配置的全光纤干涉光纤陀螺仪。 陀螺仪包括偏振光源，光检测器，光源耦合器，光纤环路耦合器和偏振保持光纤回路。 光源耦合器的第一端口被反向轴向耦合到偏振光源的输出端，并且与第一端口相同侧的光源耦合器的第二端口耦合到光检测器。 光源耦合器的另一侧上的第三端口与光纤环路耦合器反向轴向耦合，并且光纤环路耦合器与偏振保持光纤环路反向轴向耦合。 光源分割输入偏振光，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。

公开(公告)号：US08842286B2

公开(公告)日：2014-09-23

申请号：US13506468

申请日：2012-04-20

Applicant: Olaf Deppe-Reibold

Inventor： Olaf Deppe-Reibold

IPC: G01C19/72

CPC classification number: G01C19/721 ,  G01C19/72 ,  G01C19/726

Abstract: In the case of a fiber-optic Sagnac interferometer, the output of an analog/digital converter and thus output signals processed in a main control circuit as well as a phase resetting signal for a phase modulation encompass a first word width. An input of a digital/analog converter and thus a resetting signal, which acts on the phase modulator, encompasses a second word width, which is smaller than the word width, with which the resetting and modulation signal is computed. A residual value signal comprising a third word width, which can be added to the output signal of the analog/digital converter via an adder, is obtained from the surplus, low-value bits.

Abstract translation: 在光纤Sagnac干涉仪的情况下，模拟/数字转换器的输出，从而输出在主控制电路中处理的信号以及用于相位调制的相位复位信号包括第一字宽。 数字/模拟转换器的输入和因此作用在相位调制器上的复位信号包含小于字宽的第二字宽度，通过该字宽计算复位和调制信号。 从剩余的低值位获得包括可以通过加法器添加到模拟/数字转换器的输出信号的第三字宽度的残差信号。

公开(公告)号：US08798405B2

公开(公告)日：2014-08-05

申请号：US13198488

申请日：2011-08-04

Applicant: Ronald T. Logan, Jr. ,  Ka Kha Wong

Inventor： Ronald T. Logan, Jr. ,  Ka Kha Wong

IPC: G01C19/72 ,  G01C19/64 ,  G02B6/32 ,  G02B6/30

CPC classification number: G01C19/64 ,  G01C19/72 ,  G01C19/721 ,  G01C19/722 ,  G02B6/30 ,  G02B6/327 ,  Y10T29/49826 ,  Y10T156/10 ,  Y10T156/1062

Abstract: Methods of attaching an optical line to a phase modulator in a fiber optic gyroscope. The methods include positioning at least one end of the optical line relative to a side of the phase modulator. The end of the optical line may have a first non-perpendicular angle and the side of the phase modulator may have a second non-perpendicular angle. The end of the optical line may be attached to the side of the phase modulator with the end of the optical line being non-parallel to the side of the phase modulator. The optical line may be an optical coil or a light path.

Abstract translation: 将光线连接到光纤陀螺仪中的相位调制器的方法。 所述方法包括相对于相位调制器的侧面定位光学线路的至少一端。 光线路的端部可以具有第一非垂直角度，并且相位调制器的侧面可以具有第二非垂直角度。 光线路的端部可以附接到相位调制器的侧面，其中光线路的端部不平行于相位调制器的侧面。 光线可以是光线圈或光路。

公开(公告)号：US08773665B1

公开(公告)日：2014-07-08

申请号：US13078428

申请日：2011-04-01

Applicant: Ronald T. Logan, Jr. ,  Ka Kha Wong

Inventor： Ronald T. Logan, Jr. ,  Ka Kha Wong

IPC: G01C19/72

CPC classification number: G01C19/72

Abstract: A compact fiber optic gyroscope including a first housing; a transceiver module disposed in the first housing, the transceiver module including a second housing; a non-coherent light source disposed in the second housing for producing a first beam of light; a single lens for focusing the first beam of light; an optical circulator disposed in the second housing and in the path of the first beam of light to produce polarized second and third beams respectively, with polarization orthogonal to each other; and first and second photodiodes disposed in the second housing and coupled to the optical circulator, wherein the first photodiode is a transmit monitor photodiode coupled to the second beam, and the second photodiode is a receiver photodiode. The first housing further includes a planar optical fiber loop having a first end and a second end; a phase modulator coupled to the third beam emitted from the transceiver module to produce fourth and fifth beams coupled to the first and the second end respectively of the optical fiber loop respectively, and for receiving the return sixth and seventh beams from the second and the first ends respectively of the optical fiber loop.

Abstract translation: 包括第一壳体的紧凑型光纤陀螺仪; 收发器模块，设置在所述第一壳体中，所述收发器模块包括第二壳体; 设置在所述第二壳体中用于产生第一光束的非相干光源; 用于聚焦第一光束的单个透镜; 设置在所述第二壳体中并且在所述第一光束的路径中的光学循环器，以分别以彼此正交的极化产生偏振的第二和第三光束; 以及第一和第二光电二极管，其设置在第二壳体中并且耦合到光循环器，其中第一光电二极管是耦合到第二光束的透射监测器光电二极管，而第二光电二极管是接收器光电二极管。 第一壳体还包括具有第一端和第二端的平面光纤回路; 耦合到从收发器模块发射的第三光束的相位调制器，以产生分别耦合到光纤回路的第一和第二端的第四和第五光束，并且用于从第二和第一光束接收返回的第六和第七光束 分别结束光纤环路。

公开(公告)号：US20130321817A1

公开(公告)日：2013-12-05

申请号：US13963937

申请日：2013-08-09

Applicant: Peking University

Inventor： Xinyue Wang ,  Ziyu Wang

IPC: G01C19/72

CPC classification number: G01C19/72 ,  G01C19/727

Abstract: An all-fiber interferometric fiber optic gyroscope having a minimum reciprocal configuration is described. The gyroscope comprises a polarized 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 counter-axially coupled to an output end of the polarized 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 counter-axially coupled to the fiber optic loop coupler, and the fiber optic loop coupler is counter-axially coupled to the polarization maintaining fiber optic loop. The light source splits the input polarized light and polarizes the optical signal propagated along a transmission arm alone, where the first and third ports are on the same transmission arm.

Abstract translation: 描述具有最小倒数配置的全光纤干涉光纤陀螺仪。 陀螺仪包括偏振光源，光检测器，光源耦合器，光纤环路耦合器和偏振保持光纤回路。 光源耦合器的第一端口被反向轴向耦合到偏振光源的输出端，并且与第一端口相同侧的光源耦合器的第二端口耦合到光检测器。 光源耦合器的另一侧上的第三端口与光纤环路耦合器反向轴向耦合，并且光纤环路耦合器与偏振保持光纤环路反向轴向耦合。 光源分割输入偏振光，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。