公开(公告)号：US08736845B2

公开(公告)日：2014-05-27

申请号：US13457929

申请日：2012-04-27

申请人： Jianfeng Wu ,  Jennifer S. Strabley ,  Tiequn Qiu ,  Glen A. Sanders

发明人： Jianfeng Wu ,  Jennifer S. Strabley ,  Tiequn Qiu ,  Glen A. Sanders

IPC分类号： G01C19/72 ,  G01B11/16

CPC分类号： H01S5/06258 ,  G03F7/70525 ,  H01S5/0687

摘要： A laser stabilization system includes laser source having first and second ends; first waveguide portion having first and second ends, first end of first waveguide portion coupled to first end of laser source; second waveguide portion having first and second ends, first end of second waveguide portion coupled to second end of laser source; micro-cavity coupled between second end of first waveguide portion and second end of second waveguide portion, micro-cavity having resonant frequency; and electronic locking loop coupled between micro-cavity and laser source, wherein electronic locking loop electronically locks laser source to resonant frequency of micro-cavity; wherein first waveguide portion is optical locking loop coupled between micro-cavity and laser source, wherein optical locking loop optically locks laser source to resonant frequency of micro-cavity; micro-cavity stabilization loop coupled with micro-cavity, wherein micro-cavity stabilization loop stabilizes resonant frequency of micro-cavity to reference frequency; and output for outputting light from system.

摘要翻译： 激光稳定系统包括具有第一和第二端的激光源; 第一波导部分具有第一和第二端，第一波导部分的第一端耦合到激光源的第一端; 第二波导部分具有第一和第二端，第二波导部分的第一端耦合到激光源的第二端; 耦合在第一波导部分的第二端和第二波导部分的第二端之间的微腔，具有谐振频率的微腔; 和耦合在微腔和激光源之间的电子锁定环，其中电子锁定环将激光源电子地锁定到微腔的共振频率; 其中第一波导部分是耦合在微腔和激光源之间的光学锁定环，其中光学锁定环将激光源光学锁定到微腔的共振频率; 微腔稳定环与微腔耦合，其中微腔稳定环路将微腔​​的谐振频率稳定到参考频率; 并输出用于从系统输出光。

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。

公开(公告)号：US20140044142A1

公开(公告)日：2014-02-13

申请号：US13571887

申请日：2012-08-10

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： H01S3/13

CPC分类号： H01S3/1305 ,  G01C19/727 ,  H01S3/005 ,  H01S3/0085 ,  H01S3/10092 ,  H01S3/1303 ,  H01S3/1304 ,  H01S3/1307 ,  H01S3/2383 ,  H01S2301/02

摘要： One embodiment is directed towards a stabilized laser including a laser to produce light at a frequency and a resonator coupled to the laser such that the light from the laser circulates therethrough. The laser also includes Pound-Drever-Hall (PDH) feedback electronics configured to adjust the frequency of the light from the laser to reduce phase noise in response to light sensed at the reflection port of the resonator and transmission port feedback electronics configured to adjust the frequency of the light from the laser toward resonance of the resonator at the transmission port in response to the light sensed at the transmission port of the resonator, wherein the transmission port feedback electronics adjust the frequency at a rate at least ten times slower than the PDH feedback electronics.

摘要翻译： 一个实施例涉及包括激光器的稳定激光器，以产生频率耦合的激光器和耦合到激光器的谐振器，使得来自激光器的光线通过其中循环。 激光器还包括Pound-Drever-Hall（PDH）反馈电子器件，其被配置为调节来自激光器的光的频率，以响应于在谐振器的反射端口处感测到的光而减少相位噪声，并且配置为调整 响应于在谐振器的传输端口处感测到的光，从激光器到发射端口的谐振器的谐振的频率，其中传输端口反馈电子器件以比PDH慢至少十倍的速率调节频率 反馈电子。

公开(公告)号：US08422024B2

公开(公告)日：2013-04-16

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： G01B9/02

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。

公开(公告)号：US08213019B2

公开(公告)日：2012-07-03

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。

公开(公告)号：US20120050745A1

公开(公告)日：2012-03-01

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。

公开(公告)号：US20110295511A1

公开(公告)日：2011-12-01

申请号：US11876476

申请日：2007-10-22

申请人： Glen A. Sanders ,  Jeffrey E. Lewis

发明人： Glen A. Sanders ,  Jeffrey E. Lewis

IPC分类号： G06F19/00

CPC分类号： G01N21/7746 ,  G01N2021/7709 ,  G01N2021/7716

摘要： An apparatus and method for detecting an agent utilizes a substrate, a waveguide on the substrate, a light source, a photo-detector, an optical coupler on the substrate, and a processor. The light source is configured to emit light into the waveguide. The photo-detector is configured to detect light. The optical coupler is configured to direct a first portion of light propagating from the waveguide towards the photo-detector and to direct a second portion of the light propagating from the waveguide back into the waveguide. The waveguide and the optical coupler at least partially form a resonator. A substance is at least one of embedded within the waveguide and adjacent to the waveguide. The substance is reactive to the agent. The processor detects a change in a resonance lineshape of the resonator caused by the reaction of the substance to the agent.

摘要翻译： 用于检测试剂的装置和方法利用衬底，衬底上的波导，光源，光检测器，衬底上的光耦合器和处理器。 光源被配置为将光发射到波导中。 光检测器被配置为检测光。 光耦合器被配置为将从波导传播的光的第一部分引导到光检测器并且将从波导传播的光的第二部分引导回到波导中。 波导和光耦合器至少部分地形成谐振器。 物质是嵌入在波导内并与波导相邻的至少一个。 物质与药剂反应。 处理器检测由物质与试剂的反应引起的谐振器的谐振线形变化。

公开(公告)号：US20110037985A1

公开(公告)日：2011-02-17

申请号：US12540175

申请日：2009-08-12

申请人： Tiequn Qiu ,  Glen A. Sanders ,  Lee Strandjord

发明人： Tiequn Qiu ,  Glen A. Sanders ,  Lee Strandjord

IPC分类号： G01C19/72

CPC分类号： G01C19/72

摘要： Systems and methods for optimizing input beam modulation for high gyro sensitivity and low bias errors. The present invention is a resonator optical gyroscope having an optimized phase-modulation amplitude (frequency) for a selected modulation frequency (amplitude) that maximizes the gyro signal-to-noise (S/N) sensitivity. For selected values of the phase modulation amplitude, the polarization cross-coupling induced intensity modulation can be nulled. By setting the phase modulation amplitudes substantially close to these nulling points (e.g. M=3.832 or 7.016 radians, which causes the first order Bessel function to be zero J1(M)=0) and then optimizing the modulation frequency, the intensity modulation induced bias is reduced to zero and gyro S/N sensitivity is maximized.

摘要翻译： 用于优化输入光束调制以实现高陀螺仪灵敏度和低偏差误差的系统和方法。 本发明是一种谐振器光学陀螺仪，其对于使陀螺仪信噪比（S / N）灵敏度最大化的所选择的调制频率（幅度）具有优化的相位调制幅度（频率）。 对于相位调制幅度的选定值，偏振交叉耦合感应强度调制可以被置零。 通过将相位调制幅度设置为基本接近于这些零点（例如M = 3.832或7.016弧度，这导致一阶贝塞尔函数为零J1（M）= 0），然后优化调制频率，强度调制诱发偏差 减小到零，并且陀螺仪S / N灵敏度最大化。

公开(公告)号：US20110026870A1

公开(公告)日：2011-02-03

申请号：US12533941

申请日：2009-07-31

申请人： Glen A. Sanders ,  Russell W. Johnson ,  Stephen Yates

发明人： Glen A. Sanders ,  Russell W. Johnson ,  Stephen Yates

IPC分类号： G02B6/00

CPC分类号： G02B6/02385 ,  G01N21/39 ,  G01N21/7746 ,  G01N2021/7786

摘要： Systems and methods for sensing a target analyte. An example sensor includes a tunable light source that provides a substantially single optical mode of light, a detector, a processor, and a resonator. The resonator resonates light provided by the light source at a predefined frequency. The resonator includes a photonic crystal fiber having a solid region that guides a substantially single optical mode of light and at least one hollow channel adjacent to the solid region. The hollow channel receives a fluid from an external source. The hollow channel is coated with a film having a material that is reactive with the target analyte in a manner that changes the optical properties of the film. The detector detects light from the resonator. A predetermined change in the detected signal as determined by the processor indicates presence of the target analyte. The material in the film is reversible.

摘要翻译： 用于感测目标分析物的系统和方法。 示例性传感器包括提供基本单个光学模式的光的可调谐光源，检测器，处理器和谐振器。 谐振器以预定的频率谐振由光源提供的光。 谐振器包括具有引导基本上单一的光学模式的固体区域和与固体区域相邻的至少一个中空通道的光子晶体光纤。 中空通道从外部源接收流体。 中空通道涂覆有具有与靶分析物反应的材料的膜，其方式是改变膜的光学性质。 检测器检测来自谐振器的光。 由处理器确定的检测到的信号的预定变化指示存在目标分析物。 电影中的材料是可逆的。

公开(公告)号：US20100309473A1

公开(公告)日：2010-12-09

申请号：US11963371

申请日：2007-12-21

申请人： Glen A. Sanders ,  Steve J. Sanders

发明人： Glen A. Sanders ,  Steve J. Sanders

IPC分类号： G01C19/72

CPC分类号： G01R15/246

摘要： An apparatus and method for sensing current. The apparatus includes an optical fiber having first and second opposing ends, a recirculator configured such that when light propagates from the respective first and second ends of the optical fiber, at least some of the light is reflected, directed or passed by the recirculator into the respective opposing ends of the optical fiber to propagate through the optical fiber and form an optical loop having an opening there through.

摘要翻译： 一种用于感应电流的装置和方法。 该装置包括具有第一和第二相对端的光纤，再循环器构造成使得当光从光纤的相应的第一和第二端传播时，至少一些光被再循环器反射，引导或通过， 光纤的相对的两端传播通过光纤并形成一个具有开口的光环路。