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11. 发明申请

US20130271770A1 RESONATOR FIBER OPTIC GYROSCOPE UTILIZING LASER FREQUENCY COMBS 有权
标题翻译：谐振器光纤陀螺使用激光频率
公开(公告)号：US20130271770A1
公开(公告)日：2013-10-17
申请号：US13445319
申请日：2012-04-12
申请人： Glen A. Sanders , Lee K. Strandjord , Tiequn Qiu
发明人： Glen A. Sanders , Lee K. Strandjord , Tiequn Qiu
IPC分类号： G01C19/72
CPC分类号： G01C19/727 , G01C19/726 , G02B6/2934 , G02B6/29379
摘要： A resonator fiber optic gyroscope comprises a first light source having a first frequency comb spectrum, and a second light source having a second frequency comb spectrum. A first filter is in optical communication with the first light source and configured to pass a first frequency comb portion. A second filter is in optical communication with the second light source and configured to pass a second frequency comb portion. A resonator is in optical communication with the first and second filters. The free spectral range values of the first and second frequency comb portions are adjusted to be an odd integer multiple of the free spectral range value of the resonances of the resonator. The second frequency comb portion is spectrally separated apart from the first frequency comb portion by a multiple of the free spectral range value of the resonances plus a frequency value proportional to rotation rate.
摘要翻译：谐振器光纤陀螺仪包括具有第一频率梳状谱的第一光源和具有第二频率梳状谱的第二光源。第一滤光器与第一光源光通信并被配置为通过第一频率梳部分。第二滤光器与第二光源光通信并被配置为通过第二频率梳部分。谐振器与第一和第二滤波器光学通信。第一和第二频率梳状部分的自由光谱范围值被调整为谐振器的谐振的自由光谱范围值的奇数整数倍。第二频率梳部分与第一频率梳部分分开，共振的自由谱范围值的倍数加上与转速成比例的频率值。

12. 发明申请

US20120307251A1 HIGH PERFORMANCE HOLLOW-CORE OPTICAL-FIBER FILTER FOR OPTICAL ROTATION SENSING 有权
标题翻译：高性能中空光纤滤光片，用于光学旋转传感
公开(公告)号：US20120307251A1
公开(公告)日：2012-12-06
申请号：US13150976
申请日：2011-06-01
申请人： Glen A. Sanders , Lee K. Strandjord , Tiequn Qiu , John Feth , Andrew W. Kaliszek
发明人： Glen A. Sanders , Lee K. Strandjord , Tiequn Qiu , John Feth , Andrew W. Kaliszek
IPC分类号： G01C19/72 , H01S3/083 , G02B6/26
CPC分类号： G02B6/4215 , G01C19/727 , G02B6/241 , G02B6/29359 , G02B6/3624 , G02B6/4257 , H01S3/0078 , H01S3/06712
摘要： A hollow-core optical-fiber filter is provided. The hollow-core optical-fiber filter includes a hollow-core optical fiber having a first end-face and an opposing second end-face. The first end-face and the second end-face set a fiber length. The hollow-core optical-fiber filter also includes a first reflective end-cap positioned at the first end-face and a second reflective end-cap positioned at the second end-face. When an optical beam from a laser is coupled into one of the first end-face or the second end-face, an optical output from the opposing end-face has a narrow linewidth and low frequency noise fluctuations.
摘要翻译：提供了一种中空纤维光纤过滤器。中空纤维光纤过滤器包括具有第一端面和相对的第二端面的中空纤维光纤。第一端面和第二端面设置光纤长度。中空纤维光纤过滤器还包括位于第一端面处的第一反射端盖和位于第二端面处的第二反射端盖。当来自激光器的光束被耦合到第一端面或第二端面中的一个时，来自相对端面的光输出具有窄线宽和低频噪声波动。

13. 发明授权

US08274659B2 Resonator fiber optic gyroscopes with reduced rotation rate instability from back reflections 有权
标题翻译：谐振器光纤陀螺仪具有从后向反射降低的旋转速率不稳定性
公开(公告)号：US08274659B2
公开(公告)日：2012-09-25
申请号：US12871518
申请日：2010-08-30
申请人： Tiequn Qiu , Lee K. Strandjord , Glen A. Sanders
发明人： Tiequn Qiu , Lee K. Strandjord , Glen A. Sanders
IPC分类号： G01C19/72
CPC分类号： G01C19/727
摘要： A resonator fiber optic gyroscope (RFOG) is disclosed that reduces rotation rate error instability. In one embodiment, the RFOG comprises a resonator optical ring cavity, a first light source in optical communication with the ring cavity and configured to generate a clockwise optical signal, and a second light source in optical communication with the ring cavity and configured to generate a counter-clockwise optical signal. The RFOG also includes a first optical component in optical communication with the first light source and the ring cavity. The first optical component is configured to prevent the clockwise optical signal from being back-reflected to the first light source. A second optical component is in optical communication with the second light source and the ring cavity. The second optical component is configured to prevent the counter-clockwise optical signal from being back-reflected to the second light source. In addition, a first optical detector and a second optical detector are optically coupled to the ring cavity.
摘要翻译：公开了一种降低旋转速率误差不稳定性的谐振器光纤陀螺仪（RFOG）。在一个实施例中，RFOG包括谐振器光环腔，与环腔光学通信并被配置为产生顺时针光信号的第一光源，以及与环腔光学通信的第二光源，并且被配置为产生逆时针光信号。 RFOG还包括与第一光源和环腔光学通信的第一光学部件。第一光学部件被配置为防止顺时针光信号被反射到第一光源。第二光学部件与第二光源和环形腔光学连通。第二光学部件被配置为防止逆时针光信号被反射到第二光源。此外，第一光学检测器和第二光学检测器光耦合到环形腔。

14. 发明申请

US20120057167A1 RFOG WITH OPTICAL HETERODYNING FOR OPTICAL SIGNAL DISCRIMINATION 有权
标题翻译： RFOG具有光学信号辨别的光学异质性
公开(公告)号：US20120057167A1
公开(公告)日：2012-03-08
申请号：US12876796
申请日：2010-09-07
申请人： Lee K. Strandjord , Glen A. Sanders , Tiequn Qiu
发明人： Lee K. Strandjord , Glen A. Sanders , Tiequn Qiu
IPC分类号： G01C19/72
CPC分类号： G01C19/727 , G01C19/723
摘要： A RFOG comprises a reference laser configured to produce a reference laser beam; a first laser source configured to produce a first laser beam; a second laser source configured to produce a second laser beam; a sensing resonator coupled to the first and second laser sources such that the first and second laser beams propagate through the sensing resonator in first and second directions, respectively; resonance tracking electronics configured to generate first and second control signals that indicate when the first and second laser beams, respectively, are off resonance; first and second optical combiners configured to beat the first and second outputs of the sensing resonator with the reference laser beam creating first and second beat signals, respectively; wherein the resonance tracking electronics is configured to discriminate between at least one rotation-sensing error and the first and second outputs of the resonator based on the first and second beat signals.
摘要翻译： RFOG包括被配置为产生参考激光束的参考激光器; 第一激光源，被配置为产生第一激光束; 被配置为产生第二激光束的第二激光源; 耦合到第一和第二激光源的感测谐振器，使得第一和第二激光束分别在第一和第二方向上传播通过感测谐振器; 谐振跟踪电子器件被配置为产生指示第一和第二激光束何时分离谐振的第一和第二控制信号; 第一和第二光学组合器被配置为分别用产生第一和第二拍频信号的参考激光束击打感测谐振器的第一和第二输出; 其中所述谐振跟踪电子设备被配置为基于所述第一和第二拍频信号来区分所述至少一个旋转感测误差和所述谐振器的所述第一和第二输出。

15. 发明申请

US20110141477A1 LIGHT-PHASE-NOISE ERROR REDUCER 有权
标题翻译：轻相噪声减少器
公开(公告)号：US20110141477A1
公开(公告)日：2011-06-16
申请号：US12644271
申请日：2009-12-22
申请人： Glen A. Sanders , Tiequn Qiu , Lee K. Strandjord
发明人： Glen A. Sanders , Tiequn Qiu , Lee K. Strandjord
IPC分类号： G01C19/72
CPC分类号： G01C19/727
摘要： A resonator gyroscope comprises a reference laser generator to produce a reference light; a first slave light source to produce a first slave light locked to the reference light; a second slave light source to produce a second slave light locked to the reference light; a first optical filter cavity coupled to at least one of the first and second slave light sources to filter out high-frequency fluctuations in the respective first and second slave lights; a resonator coupled to said first and second light sources, the resonator having first and second counter-propagating directions and resonance tracking electronics coupled to the resonator to generate a first beat frequency, a second beat frequency, and a third beat frequency; wherein the rotational rate of the resonator gyroscope is a function of the first, second and third beat frequencies.
摘要翻译：谐振器陀螺仪包括参考激光发生器以产生参考光; 第一从光源，用于产生锁定到参考光的第一从光; 第二从光源，用于产生锁定到参考光的第二从光; 耦合到所述第一和第二从属光源中的至少一个的第一光学滤波器空腔以滤除相应的第一和第二从属灯中的高频波动; 耦合到所述第一和第二光源的谐振器，所述谐振器具有耦合到谐振器的第一和第二反向传播方向和谐振跟踪电子器件，以产生第一拍频，第二拍频和第三拍频; 其中所述谐振器陀螺仪的旋转速率是所述第一，第二和第三拍频的函数。

16. 发明授权

US07933020B1 System and method for reducing laser phase noise in a resonator fiber optic gyroscope 有权
标题翻译：用于降低谐振器光纤陀螺仪中的激光相位噪声的系统和方法
公开(公告)号：US07933020B1
公开(公告)日：2011-04-26
申请号：US12636741
申请日：2009-12-13
申请人： Lee K. Strandjord , Tiequn Qiu , Glen A. Sanders
发明人： Lee K. Strandjord , Tiequn Qiu , Glen A. Sanders
IPC分类号： G01C19/72
CPC分类号： G01C19/727
摘要： A resonator gyroscope comprises a reference laser generator to produce a reference light; a first slave light source to produce a first slave light locked to the reference light; a second slave light source to produce a second slave light locked to the reference light; a resonator coupled to said first and second light sources, the resonator having first and second counter-propagating directions and resonance tracking electronics coupled to the Sagnac resonator to generate a first beat frequency based on a first resonance frequency for the first counter-propagating direction, a second beat frequency based on a second resonance frequency for the second counter-propagating direction, and a third beat frequency based on a third resonance frequency for the second counter-propagating direction; wherein the rotational rate of the resonator gyroscope is a function of the first, second and third beat frequencies.
摘要翻译：谐振器陀螺仪包括参考激光发生器以产生参考光; 第一从光源，用于产生锁定到参考光的第一从光; 第二从光源，用于产生锁定到参考光的第二从光; 耦合到所述第一和第二光源的谐振器，所述谐振器具有耦合到所述Sagnac谐振器的第一和第二反向传播方向和谐振跟踪电子器件，以基于用于所述第一反向传播方向的第一谐振频率产生第一拍频，基于第二反向传播方向的第二谐振频率的第二拍频，以及基于第二反向传播方向的第三谐振频率的第三拍频; 其中谐振器陀螺仪的旋转速率是第一，第二和第三拍频的函数。

17. 发明申请

US20130107271A1 SYSTEM AND METHOD FOR REDUCING ERRORS IN A RESONATOR FIBER OPTIC GYROSCOPE 有权
标题翻译：用于减少谐振器光纤陀螺中的误差的系统和方法
公开(公告)号：US20130107271A1
公开(公告)日：2013-05-02
申请号：US13287422
申请日：2011-11-02
申请人： Lee K. Strandjord , Tiequn Qiu , Glen A. Sanders
发明人： Lee K. Strandjord , Tiequn Qiu , Glen A. Sanders
IPC分类号： G01C19/72
CPC分类号： G01C19/727 , G01C19/722
摘要： An exemplary resonator fiber optic gyroscope comprises a resonator having an optical fiber loop; a light source configured to generate a light beam; and an intensity modulation circuit coupled between the light source and the resonator. The intensity modulation circuit is configured to modulate the intensity of the light beam from the light source to output an intensity modulated signal to the resonator. The intensity modulation circuit is configured to produce the intensity modulated signal such that harmonics of the intensity modulated signal which overlap a primary wave of a counter-propagating light beam in the resonator have an amplitude below a predetermined threshold. Amplitudes below the predetermined threshold are negligible.
摘要翻译：一种示例性的谐振器光纤陀螺仪包括具有光纤回路的谐振器; 被配置为产生光束的光源; 以及耦合在光源和谐振器之间的强度调制电路。强度调制电路被配置为调制来自光源的光束的强度，以将强度调制信号输出到谐振器。强度调制电路被配置为产生强度调制信号，使得与谐振器中的相反传播光束的主波重叠的强度调制信号的谐波具有低于预定阈值的幅度。低于预定阈值的幅度可以忽略不计。

18. 发明授权

US08223341B2 System and method for enhancing signal-to-noise ratio of a resonator fiber optic gyroscope 有权
标题翻译：用于提高谐振器光纤陀螺仪的信噪比的系统和方法
公开(公告)号：US08223341B2
公开(公告)日：2012-07-17
申请号：US12789972
申请日：2010-05-28
申请人： Lee K. Strandjord , Glen A. Sanders , Tiequn Qiu
发明人： Lee K. Strandjord , Glen A. Sanders , Tiequn Qiu
IPC分类号： G01C19/72
CPC分类号： G01C19/727
摘要： A resonator fiber optic gyroscope includes a sensing resonator having a first resonance frequency for a first laser beam propagation direction and a second resonance frequency for a second laser beam propagation direction; an intensity modulator coupled to an output of the sensing resonator and configured to modulate the intensity of a signal output from the sensing resonator, wherein the intensity modulator modulates the output signal at an intensity modulation frequency; and resonance tracking electronics coupled to an output of the intensity modulator and configured to demodulate the intensity modulated signal output from the intensity modulator at a resonance tracking modulation frequency to produce a first demodulated signal; the resonance tracking electronics further configured to demodulate the first demodulated signal at the intensity modulation frequency, wherein the intensity modulation frequency is different from the resonance tracking modulation frequency.
摘要翻译：谐振器光纤陀螺仪包括：感测谐振器，具有用于第一激光束传播方向的第一谐振频率和用于第二激光束传播方向的第二谐振频率; 耦合到感测谐振器的输出并被配置为调制从感测谐振器输出的信号的强度的强度调制器，其中强度调制器以强度调制频率调制输出信号; 以及谐振跟踪电子器件耦合到所述强度调制器的输出并且被配置为以谐振跟踪调制频率解调从所述强度调制器输出的强度调制信号，以产生第一解调信号; 谐振跟踪电子器件还被配置为以强度调制频率解调第一解调信号，其中强度调制频率不同于谐振跟踪调制频率。

19. 发明授权

US08009296B2 Light-phase-noise error reducer 有权
标题翻译：轻相噪声减速器
公开(公告)号：US08009296B2
公开(公告)日：2011-08-30
申请号：US12644271
申请日：2009-12-22
申请人： Glen A. Sanders , Tiequn Qiu , Lee K. Strandjord
发明人： Glen A. Sanders , Tiequn Qiu , Lee K. Strandjord
IPC分类号： G01C19/72
CPC分类号： G01C19/727
摘要： A resonator gyroscope comprises a reference laser generator to produce a reference light; a first slave light source to produce a first slave light locked to the reference light; a second slave light source to produce a second slave light locked to the reference light; a first optical filter cavity coupled to at least one of the first and second slave light sources to filter out high-frequency fluctuations in the respective first and second slave lights; a resonator coupled to said first and second light sources, the resonator having first and second counter-propagating directions and resonance tracking electronics coupled to the resonator to generate a first beat frequency, a second beat frequency, and a third beat frequency; wherein the rotational rate of the resonator gyroscope is a function of the first, second and third beat frequencies.
摘要翻译：谐振器陀螺仪包括用于产生参考光的参考激光发生器; 第一从光源，用于产生锁定到参考光的第一从光; 第二从光源，用于产生锁定到参考光的第二从光; 耦合到所述第一和第二从属光源中的至少一个的第一光学滤波器空腔以滤除相应的第一和第二从属灯中的高频波动; 耦合到所述第一和第二光源的谐振器，所述谐振器具有耦合到谐振器的第一和第二反向传播方向和谐振跟踪电子器件，以产生第一拍频，第二拍频和第三拍频; 其中谐振器陀螺仪的旋转速率是第一，第二和第三拍频的函数。

20. 发明授权

US08659760B2 Resonator fiber optic gyroscope utilizing laser frequency combs 有权
标题翻译：谐振器光纤陀螺仪利用激光频率梳
公开(公告)号：US08659760B2
公开(公告)日：2014-02-25
申请号：US13445319
申请日：2012-04-12
申请人： Glen A. Sanders , Lee K. Strandjord , Tiequn Qiu
发明人： Glen A. Sanders , Lee K. Strandjord , Tiequn Qiu
IPC分类号： G01C19/72
CPC分类号： G01C19/727 , G01C19/726 , G02B6/2934 , G02B6/29379
摘要： A resonator fiber optic gyroscope comprises a first light source having a first frequency comb spectrum, and a second light source having a second frequency comb spectrum. A first filter is in optical communication with the first light source and configured to pass a first frequency comb portion. A second filter is in optical communication with the second light source and configured to pass a second frequency comb portion. A resonator is in optical communication with the first and second filters. The free spectral range values of the first and second frequency comb portions are adjusted to be an odd integer multiple of the free spectral range value of the resonances of the resonator. The second frequency comb portion is spectrally separated apart from the first frequency comb portion by a multiple of the free spectral range value of the resonances plus a frequency value proportional to rotation rate.
摘要翻译：谐振器光纤陀螺仪包括具有第一频率梳状谱的第一光源和具有第二频率梳状谱的第二光源。第一滤光器与第一光源光通信并被配置为通过第一频率梳部分。第二滤光器与第二光源光通信并被配置为通过第二频率梳部分。谐振器与第一和第二滤波器光学通信。第一和第二频率梳状部分的自由光谱范围值被调整为谐振器的谐振的自由光谱范围值的奇数整数倍。第二频率梳部分与第一频率梳部分分开，共振的自由谱范围值的倍数加上与转速成比例的频率值。

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