公开(公告)号：US09354064B2

公开(公告)日：2016-05-31

申请号：US14325006

申请日：2014-07-07

Applicant: Honeywell International Inc.

Inventor： Lee K. Strandjord ,  Glen A. Sanders ,  Jianfeng Wu

IPC: G01C19/72

CPC classification number: G01C19/727 ,  G01C19/721

Abstract: A resonator fiber optic gyroscope comprises a master laser device that emits a reference optical signal, a first slave laser device that emits a clockwise optical signal, and a second slave laser device that emits a counter-clockwise optical signal. A resonator ring cavity is in communication with the master laser device and the slave laser devices. A sine wave generator is coupled to the resonator ring cavity and outputs a common cavity modulation frequency comprising in-phase and quadrature signals. A laser stabilization servo receives a clockwise reflection signal that includes the common cavity modulation frequency from the resonator ring cavity. A modulation stripper coupled to the servo receives the in-phase and quadrature signals, receives a net error signal from the servo, demodulates the net error signal at the common cavity modulation frequency, and transmits a stripper signal to the servo to remove the signal at the common cavity modulation frequency.

Abstract translation: 谐振器光纤陀螺仪包括发射参考光信号的主激光装置，发射顺时针光信号的第一从激光装置和发射逆时针光信号的第二从激光装置。 谐振腔环与主激光器件和从属激光器件通信。 正弦波发生器耦合到谐振器环腔并输出包括同相和正交信号的公共调制频率。 激光稳定伺服机构接收包括来自谐振腔环的公共腔调制频率的顺时针反射信号。 耦合到伺服器的调制剥离器接收同相和正交信号，从伺服器接收净误差信号，解调公共空腔调制频率处的净误差信号，并将去耦信号发送到伺服器以去除信号 共腔调制频率。

公开(公告)号：US09170108B1

公开(公告)日：2015-10-27

申请号：US14303174

申请日：2014-06-12

Applicant: Honeywell International Inc.

Inventor： Tiequn Qiu ,  Glen A. Sanders ,  Jianfeng Wu ,  Lee K. Strandjord

IPC: G01C19/72 ,  H01S3/13

CPC classification number: G01C19/721 ,  H01S3/1304 ,  H01S3/1305 ,  H04B10/50572 ,  H04B10/5165

Abstract: A light-source system to output at least one stable phase modulated coherent light beam is provided. The light-source system includes a multi-frequency laser system, at least one phase modulator, at least one feedback photodetector, and at least one modulation servo. The multi-frequency laser system emits a reference light beam and provides at least one unmodulated-light beam having a respective at least one carrier frequency offset from the reference carrier frequency. The phase modulator modulates the unmodulated-light beam provided by the multi-frequency laser system. The frequency-selection device monitors a frequency component of interest. The feedback photodetector provides information indicative of beat frequencies between the reference light beam and the modulated-light beam. The modulation servo adjusts a modulation amplitude applied to the phase modulator to substantially suppress one of: the respective electric field at a carrier frequency; or the electric field components at the frequencies associated with a selected sideband-pair.

Abstract translation: 提供了一种用于输出至少一个稳定的相位调制相干光束的光源系统。 光源系统包括多频激光系统，至少一个相位调制器，至少一个反馈光电检测器和至少一个调制伺服器。 多频激光系统发射参考光束并提供至少一个具有与参考载波频率相应的至少一个载波频率偏移的未调制光束。 相位调制器调制由多频激光系统提供的未调制光束。 频率选择装置监视感兴趣的频率分量。 反馈光电检测器提供指示参考光束和调制光束之间的拍频的信息。 调制伺服调整施加到相位调制器的调制幅度，以基本上抑制载波频率处的相应电场之一; 或与选择的边带对相关联的频率处的电场分量。

公开(公告)号：US20150285635A1

公开(公告)日：2015-10-08

申请号：US14094105

申请日：2013-12-02

Applicant: Honeywell International Inc.

Inventor： Tiequn Qiu ,  Glen A. Sanders ,  Lee K. Strandjord

IPC: G01C19/72

CPC classification number: G01C19/721 ,  G01C19/727 ,  G02B6/02042 ,  G02B6/262

Abstract: A multi-core transport system for a resonant fiber optic gyroscope is provided. The transport system has a transport fiber configured to transmit a clockwise signal and a counterclockwise signal, wherein the transport fiber has at least a first core and a second core. The first core and second core are configured such that when the first core imparts a first effect on the clockwise signal, the second core imparts a second effect on the counterclockwise signal, wherein the second effect substantially mirrors the first effect. The system further comprises a first coupler configured to optically couple the clockwise signal to the first core, and the counterclockwise signal to the second core; and a second coupler configured to optically couple the clockwise signal from the first core to a resonator, and the counterclockwise signal from the second core to the resonator.

Abstract translation: 提供了一种用于谐振光纤陀螺仪的多核传输系统。 传送系统具有被配置为传送顺时针信号和逆时针信号的传输光纤，其中传输光纤具有至少第一核心和第二核心。 第一芯和第二芯构造成使得当第一芯对顺时针信号施加第一效应时，第二芯对逆时针信号施加第二效应，其中第二效应基本上反映第一效应。 所述系统还包括：第一耦合器，被配置为将所述顺时针信号光学地耦合到所述第一芯，并且将所述逆时针信号耦合到所述第二芯; 以及第二耦合器，被配置为将来自第一芯的顺时针信号光学地耦合到谐振器，以及从第二芯到谐振器的逆时针信号。

公开(公告)号：US09001336B1

公开(公告)日：2015-04-07

申请号：US14047855

申请日：2013-10-07

Applicant: Honeywell International Inc.

Inventor： Tiequn Qiu ,  Jianfeng Wu ,  Lee K. Strandjord ,  Glen A. Sanders

IPC: G01C19/72 ,  G01C19/66

CPC classification number: G01C19/661 ,  G01C19/727

Abstract: A resonator fiber optic gyroscope is provided. The resonator fiber optic gyroscope includes a gyroscope resonator, a laser; a clockwise modulator; a clockwise circulator; a clockwise reflection detector; a first-lock-in-amplifier, a clockwise-resonance-tracking servo to receive output from the first-lock-in-amplifier and to provide feedback to the laser to lock the laser to the gyroscope resonator; a clockwise transmission detector to detect an optical beam output from the counter-clockwise input port; a second servo; a second-lock-in-amplifier; and a third-lock-in-amplifier. The first and second lock-in-amplifiers demodulate at the first harmonic of the modulation frequency. The second-lock-in-amplifier demodulates at the second harmonic of the modulation frequency. Either the modulation frequency of the clockwise optical beam is locked to (n+0.5) times the FSR through the second servo, where n is zero or a positive integer, or the FSR is locked to 1/(n+0.5) times the modulation frequency of the clockwise optical beam through the second servo.

Abstract translation: 提供了一种谐振器光纤陀螺仪。 谐振器光纤陀螺仪包括陀螺仪谐振器，激光器; 顺时针调制器 顺时针循环器 顺时针反射检测器; 第一锁定放大器，顺时针谐振跟踪伺服器，用于接收来自第一锁定放大器的输出，并向激光器提供反馈以将激光器锁定到陀螺仪谐振器; 用于检测从逆时针输入端口输出的光束的顺时针传输检测器; 第二伺服; 第二锁定放大器; 和第三锁定放大器。 第一和第二锁相放大器在调制频率的一次谐波处解调。 第二锁定放大器在调制频率的二次谐波处解调。 顺时针光束的调制频率通过第二伺服锁定到FSR的（n + 0.5）倍，其中n为零或正整数，或者FSR被锁定到调制的1 /（n + 0.5）倍 顺时针光束通过第二伺服的频率。

公开(公告)号：US08947671B2

公开(公告)日：2015-02-03

申请号：US13774678

申请日：2013-02-22

Applicant: Honeywell International Inc.

Inventor： Lee K. Strandjord ,  Mary K. Salit ,  Tiequn Qiu ,  Glen A. Sanders

IPC: G01C19/72

CPC classification number: G01C19/721 ,  G01C19/727

Abstract: A resonator fiber optic gyroscope (RFOG) is provided. The RFOG includes a gyroscope resonator having a clockwise input port and a counter-clockwise input port; a first laser configured to couple a clockwise optical beam into to the clockwise input port; a clockwise Pound-Drever-Hall modulation generator to modulate the clockwise optical beam with a resonance tracking modulation before the clockwise optical beam is coupled into the clockwise input port; bias correction electronics; FSR-detection-and-servo electronics including a switch communicatively coupled to the clockwise Pound-Drever-Hall modulation generator; a clockwise transmission detector configured to receive an optical beam output from the counter-clockwise input port and output signals to the bias correction electronics and the FSR-detection-and-servo electronics; and a second laser configured to couple a counter-clockwise optical beam into to the counter-clockwise input port, wherein the FSR of the gyroscope resonator is measured based on the Pound-Drever-Hall modulation of the clockwise optical beam.

Abstract translation: 提供了一种谐振器光纤陀螺仪（RFOG）。 RFOG包括具有顺时针输入端口和逆时针输入端口的陀螺仪谐振器; 配置成将顺时针光束耦合到顺时针输入端口的第一激光器; 在顺时针光束耦合到顺时针输入端口之前，使用谐振跟踪调制来调制顺时针光束的顺时针方向Drever-Hall调制发生器; 偏置校正电子; FSR检测和伺服电子器件包括通信地耦合到顺时针的Dound-Drever-Hall调制发生器的开关; 顺时针传输检测器，被配置为接收从逆时针输入端口输出的光束，并将信号输出到偏置校正电路和FSR检测与伺服电子设备; 以及配置成将逆时针光束耦合到逆时针输入端口的第二激光器，其中基于顺时针光束的磅德尔 - 霍尔调制来测量陀螺仪谐振器的FSR。

公开(公告)号：US20140152994A1

公开(公告)日：2014-06-05

申请号：US13693321

申请日：2012-12-04

Applicant: HONEYWELL INTERNATIONAL INC.

Inventor： Jianfeng Wu ,  Tiequn Qiu ,  Glen A. Sanders ,  Lee K. Strandjord

IPC: G01C19/66 ,  H01S3/30

CPC classification number: H01S3/302 ,  G01C19/727 ,  H01S3/30

Abstract: Systems and methods for measuring rotation using an optical frequency comb stimulated Brillouin scattering gyroscope are provided. In certain embodiments, a system comprises a light source that produces a multiple-frequency light beam based on an optical frequency comb; and an optical fiber resonator coupled to the light source, the multiple-frequency light beam propagating in a first direction within the optical fiber resonator, wherein the multiple-frequency light beam generates stimulated Brillouin scattering (SBS) for a frequency, wherein the Brillouin scattering generates an SBS light beam to propagate in a second direction, the first direction being opposite in direction to the second direction. The system also comprises a servo to control the frequencies of the optical frequency comb to lock a plurality of component frequencies on resonance peaks of the optical fiber resonator; and a mixer that determines a frequency difference between the SBS light beam and the multiple-frequency light beam.

Abstract translation: 提供了使用光学频率梳状受激布里渊散射陀螺仪测量旋转的系统和方法。 在某些实施例中，系统包括基于光频梳产生多频光束的光源; 以及耦合到所述光源的光纤谐振器，所述多频光束在所述光纤谐振器内在第一方向上传播，其中所述多频光束针对频率产生受激布里渊散射（SBS），其中所述布里渊散射 产生SBS光束沿第二方向传播，第一方向与第二方向相反。 该系统还包括伺服器，用于控制光频梳的频率以锁定光纤谐振器的共振峰上的多个分量频率; 以及确定SBS光束和多频光束之间的频率差的混合器。