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1. 发明授权

US07697143B2 Reliable low loss hollow core fiber resonator 有权
标题翻译：可靠的低损耗空芯纤维谐振器
公开(公告)号：US07697143B2
公开(公告)日：2010-04-13
申请号：US12130662
申请日：2008-05-30
申请人： Glen A. Sanders , Andrew Kaliszek , Thien Dang
发明人： Glen A. Sanders , Andrew Kaliszek , Thien Dang
IPC分类号： G01C19/72
CPC分类号： G01C19/722 , G01C19/727 , G02B6/4207
摘要： An optical coupling device for connecting hollow core optical fiber coils in a fiber optic gyro system. An example fiber optic gyro system includes a recirculator or an integrated optics chip, a fiber coil of hollow core optical fiber with first and second ends, and a coupling device that holds an end of the hollow core optical fiber in an enclosed cavity at some predefined distance from the recirculator or integrated optics chip. The coupling device includes a housing for rigidly holding the fiber end in position. The housing includes a cavity that receives the fiber end.
摘要翻译：一种用于在光纤陀螺仪系统中连接中空纤芯光纤线圈的光耦合装置。示例性光纤陀螺仪系统包括再循环器或集成光学芯片，具有第一和第二端的中空纤芯光纤的光纤线圈，以及耦合器件，其将中空芯光纤的端部保持在封闭空腔中，距离再循环器或集成光学芯片的距离。联接装置包括用于将纤维端刚性保持就位的壳体。壳体包括容纳纤维端部的空腔。

2. 发明申请

US20090296098A1 RELIABLE LOW LOSS HOLLOW CORE FIBER RESONATOR 有权
标题翻译：可靠的低损耗中空纤维共振器
公开(公告)号：US20090296098A1
公开(公告)日：2009-12-03
申请号：US12130662
申请日：2008-05-30
申请人： Glen A. Sanders , Andrew Kaliszek , Thien Dang
发明人： Glen A. Sanders , Andrew Kaliszek , Thien Dang
IPC分类号： G01C19/72
CPC分类号： G01C19/722 , G01C19/727 , G02B6/4207
摘要： An optical coupling device for connecting hollow core optical fiber coils in a fiber optic gyro system. An example fiber optic gyro system includes a recirculator or an integrated optics chip, a fiber coil of hollow core optical fiber with first and second ends, and a coupling device that holds an end of the hollow core optical fiber in an enclosed cavity at some predefined distance from the recirculator or integrated optics chip. The coupling device includes a housing for rigidly holding the fiber end in position. The housing includes a cavity that receives the fiber end.
摘要翻译：一种用于在光纤陀螺仪系统中连接中空纤芯光纤线圈的光耦合装置。示例性光纤陀螺仪系统包括再循环器或集成光学芯片，具有第一和第二端的中空纤芯光纤的光纤线圈，以及耦合器件，其将中空芯光纤的端部保持在封闭空腔中，距离再循环器或集成光学芯片的距离。联接装置包括用于将纤维端刚性保持就位的壳体。壳体包括容纳纤维端部的空腔。

3. 发明申请

US20090324169A1 MICRO-OPTICS PHOTONIC BANDGAP FIBER COUPLER 有权
标题翻译：微型光电胶带光纤耦合器
公开(公告)号：US20090324169A1
公开(公告)日：2009-12-31
申请号：US12163307
申请日：2008-06-27
申请人： Thien Dang , Glen A. Sanders , Tim Spicer
发明人： Thien Dang , Glen A. Sanders , Tim Spicer
IPC分类号： G02B6/32
CPC分类号： G02B6/2934 , G02B6/2804 , G02B6/322
摘要： A resonator sensing device having an optics coupler device for communicating light between light source(s) and sensor(s) and a hollow core fiber resonator. Light from one resonator fiber tip is coupled to a second resonator fiber tip via a graded index (GRIN) lens having the appropriate pitch such that the maximum coupling efficiency is achieved and having two angled surfaces. The angled surfaces are coated with an appropriate coating having a reflectance R in order to achieve the desired degree of coupling. Light reflected by the second angled surface is captured with another lens (such as a microlens) and coupled to a third fiber segment (coupled port). The optical parameters for the GRIN lens and the microlens are tailored to have the least loss.
摘要翻译：一种谐振器感测装置，具有用于在光源和传感器之间传送光的光学耦合器装置和中空纤芯光纤谐振器。来自一个谐振器光纤尖端的光通过具有适当间距的渐变折射率（GRIN）透镜耦合到第二谐振器光纤尖端，使得实现最大耦合效率并具有两个成角度的表面。成角度的表面涂覆有具有反射率R的合适的涂层，以便达到所需的耦合度。由第二倾斜表面反射的光被另一透镜（例如微透镜）捕获并耦合到第三光纤段（耦合端口）。 GRIN透镜和微透镜的光学参数被定制为具有最小的损耗。

4. 发明授权

US07680372B2 Micro-optics photonic bandgap fiber coupler 有权
标题翻译：微光子带隙光纤耦合器
公开(公告)号：US07680372B2
公开(公告)日：2010-03-16
申请号：US12163307
申请日：2008-06-27
申请人： Thien Dang , Glen A. Sanders , Tim Spicer
发明人： Thien Dang , Glen A. Sanders , Tim Spicer
IPC分类号： G02B6/26 , G02B6/42 , G02B6/32 , H01S3/30 , H01S3/08 , H01S3/081 , H01S3/083
CPC分类号： G02B6/2934 , G02B6/2804 , G02B6/322
摘要： A resonator sensing device having an optics coupler device for communicating light between light source(s) and sensor(s) and a hollow core fiber resonator. Light from one resonator fiber tip is coupled to a second resonator fiber tip via a graded index (GRIN) lens having the appropriate pitch such that the maximum coupling efficiency is achieved and having two angled surfaces. The angled surfaces are coated with an appropriate coating having a reflectance R in order to achieve the desired degree of coupling. Light reflected by the second angled surface is captured with another lens (such as a microlens) and coupled to a third fiber segment (coupled port). The optical parameters for the GRIN lens and the microlens are tailored to have the least loss.
摘要翻译：一种谐振器感测装置，具有用于在光源和传感器之间传送光的光学耦合器装置和中空纤芯光纤谐振器。来自一个谐振器光纤尖端的光通过具有适当间距的渐变折射率（GRIN）透镜耦合到第二谐振器光纤尖端，使得实现最大耦合效率并具有两个成角度的表面。成角度的表面涂覆有具有反射率R的合适的涂层，以便达到所需的耦合度。由第二倾斜表面反射的光被另一透镜（例如微透镜）捕获并耦合到第三光纤段（耦合端口）。 GRIN透镜和微透镜的光学参数被定制为具有最小的损耗。

5. 发明授权

US08908187B2 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仪中的误差的系统和方法
公开(公告)号：US08908187B2
公开(公告)日：2014-12-09
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： G01C19/64 , 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。

6. 发明授权

US07855789B2 RFOG modulation error correction 有权
标题翻译： RFOG调制纠错
公开(公告)号：US07855789B2
公开(公告)日：2010-12-21
申请号：US12167056
申请日：2008-07-02
申请人： Lee K. Strandjord , Glen A. Sanders
发明人： Lee K. Strandjord , Glen A. Sanders
IPC分类号： G01C19/72
CPC分类号： G01C19/727
摘要： Systems and methods for performing modulation error correction. An example system applies common phase/frequency modulation to first and second laser beams, a first intensity modulation to the first modulated beam, and a second intensity modulation to the second modulated beam. Signals outputted are demodulated according to the frequency of the common phase/frequency modulation. Then the first of these demodulated signals is demodulated based on the frequency of the intensity modulation of the first beam, and the second of these demodulated signals is demodulated based on the frequency of the intensity modulation of the second beam. Then, rate of rotation is determined based on demodulated signals. Frequencies of the intensity modulations are unequal and not harmonically related, and intensity modulation encodes each light beam with a unique signature.
摘要翻译：用于执行调制误差校正的系统和方法。示例性系统将共同相位/频率调制应用于第一和第二激光束，对第一调制光束进行第一强度调制，以及对第二调制光束进行第二强度调制。输出的信号根据共同相位/频率调制的频率进行解调。然后，基于第一光束的强度调制的频率对这些解调信号中的第一个进行解调，并且基于第二光束的强度调制的频率对这些解调信号中的第二个进行解调。然后，基于解调信号确定旋转速率。强度调制的频率是不相等的，而不是谐波相关的，强度调制对每个光束进行独特的签名编码。

7. 发明授权

US07844152B2 Kerr effect compensated optical ring resonator 有权
标题翻译：克尔效应补偿光环谐振器
公开(公告)号：US07844152B2
公开(公告)日：2010-11-30
申请号：US12167219
申请日：2008-07-02
申请人： Glen A. Sanders
发明人： Glen A. Sanders
IPC分类号： G02B6/00 , H01S3/08 , G02F1/01 , G01C19/64
CPC分类号： G01C19/727 , G02F1/3544 , G02F1/37 , G02F2203/15
摘要： Systems and methods for compensating for nonlinear phase shift accumulation in an optical ring resonator. An example method includes sending a first beam in a clockwise direction around the optical ring resonator and sending a second beam in a counterclockwise direction around the optical ring resonator. Then, nonlinear phase shift accumulation of the first and second beams is compensated for within the optical ring resonator. Compensating includes creating a negative Kerr effect phase shift for each beam based on an estimate of accumulated positive Kerr effect.
摘要翻译：用于补偿光环谐振器中的非线性相移累积的系统和方法。示例性方法包括围绕光环谐振器沿顺时针方向发送第一光束，并沿光环谐振器周围的逆时针方向发送第二光束。然后，在光环谐振器内补偿第一和第二波束的非线性相移累积。补偿包括基于积累的正克尔效应的估计为每个波束产生负的克尔效应相移。

8. 发明申请

US20100253948A1 SYSTEMS AND METHODS FOR RESONATOR FIBER OPTIC GYROSCOPE INTENSITY MODULATION CONTROL 有权
标题翻译：谐振光纤陀螺强度调制控制系统与方法
公开(公告)号：US20100253948A1
公开(公告)日：2010-10-07
申请号：US12729660
申请日：2010-03-23
申请人： Lee K. Strandjord , Glen A. Sanders , Norman Gerard Tarleton
发明人： Lee K. Strandjord , Glen A. Sanders , Norman Gerard Tarleton
IPC分类号： G01C19/72
CPC分类号： G01C19/727
摘要： Systems and methods for improved resonator fiber optic gyroscope intensity modulation control are provided. In one embodiment, a resonant fiber optic gyroscope (RFOG) having a residual intensity modulation (RIM) controller comprises: an intensity modulator optically coupled to receive a light beam from a laser source modulated at a resonance detection modulation frequency; an optical tap device optically coupled to the intensity modulator; and a feedback servo coupled to the optical tap device and the intensity modulator, the demodulating feedback servo generating a sinusoidal feedback signal to the intensity modulator. The feedback servo adjusts an amplitude and phase of the sinusoidal feedback signal provided to intensity modulator based on a residual intensity modulation detected by the demodulating feedback servo.
摘要翻译：提供了改进谐振器光纤陀螺仪强度调制控制的系统和方法。在一个实施例中，具有残余强度调制（RIM）控制器的谐振光纤陀螺仪（RFOG）包括：光耦合的光强调制器，用于接收来自以谐振检测调制频率调制的激光源的光束; 与所述强度调制器光耦合的光学抽头装置; 以及耦合到光学抽头装置和强度调制器的反馈伺服器，解调反馈伺服器向强度调制器产生正弦反馈信号。基于由解调反馈伺服检测到的残余强度调制，反馈伺服调节提供给强度调制器的正弦反馈信号的幅度和相位。

9. 发明申请

US20100033729A1 BIAS-INSTABILITY REDUCTION IN FIBER OPTIC GYROSCOPES 失效
标题翻译：光纤陀螺中的偏置不稳定性降低
公开(公告)号：US20100033729A1
公开(公告)日：2010-02-11
申请号：US12187932
申请日：2008-08-07
申请人： Tiequn Qiu , Steven J. Sanders , Sorin Mosor , Glen A. Sanders
发明人： Tiequn Qiu , Steven J. Sanders , Sorin Mosor , Glen A. Sanders
IPC分类号： G01C19/72 , G06G7/48
CPC分类号： G01C19/64
摘要： A computer-implementable method of reducing bias instability in a fiber optic gyroscope includes receiving, with a computer, a first data set enabling the computer to generate a model of the gyroscope, including a light source, a photodetector, and a plurality of optical components and fiber sections coupling the light source to the photodetector, and a light signal to be propagated from the light source to the photodetector. The light signal has an associated wavelength spectrum. For each wavelength of the spectrum, the relative lightwave intensity reaching the photodetector is calculated. A signal-wave intensity and a spurious-wave intensity are determined from the calculated relative lightwave intensities. A scale factor is determined from the signal-wave intensity. The spurious-wave intensity is integrated over the wavelength spectrum of the light source to obtain a total spurious-wave intensity. A rate bias error is determined based on the total spurious-wave intensity and the scale factor.
摘要翻译：一种降低光纤陀螺仪中的偏压不稳定性的计算机可实现的方法包括：利用计算机接收第一数据组，使得该计算机能够生成陀螺仪的模型，该模型包括光源，光电检测器和多个光学部件以及将光源耦合到光电检测器的光纤部分，以及从光源传播到光电检测器的光信号。光信号具有相关的波长谱。对于光谱的每个波长，计算到达光电检测器的相对光波强度。从计算的相对光波强度确定信号波强度和寄生波强度。从信号波强度确定比例因子。寄生波强度集成在光源的波长光谱上，以获得总的杂散波强度。基于总杂散波强度和比例因子确定速率偏差误差。

10. 发明授权

US07522284B2 Optical resonator gyro and method for reducing resonance asymmetry errors 有权
标题翻译：光谐振陀螺和减少谐振不对称误差的方法
公开(公告)号：US07522284B2
公开(公告)日：2009-04-21
申请号：US11540771
申请日：2006-09-29
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
摘要： Methods and apparatus are provided for attenuating rotation rate errors in a resonator gyro. The gyro includes a ring resonator having a hollow core optical fiber coil and optical elements that are selected and/or oriented to reduce stray light that may be present in input light beams introduced to the ring resonator. The resonator has a predetermined mode. One of the optical elements partially transmits a portion of the input light beam to a first end of the fiber coil while partially transmitting a portion of the input light beam to a filter. Light having the predetermined mode is accepted into the first end of the fiber coil, and the filter accepts light of the input light beam having a corresponding mode. Transmission components of the circulating light beams indicates resonance peaks of the counter-propagating directions of the ring resonator.
摘要翻译：提供了用于衰减谐振器陀螺仪中的转速误差的方法和装置。陀螺仪包括具有中空纤芯光纤线圈的环形谐振器和选择和/或取向以减少可能存在于引入环形谐振器的输入光束中的杂散光的光学元件。谐振器具有预定模式。一个光学元件将输入光束的一部分部分地传输到光纤线圈的第一端，同时部分地将输入光束的一部分传输到滤光器。具有预定模式的光被接受到光纤线圈的第一端，并且滤光器接受具有相应模式的输入光束的光。循环光束的透射分量表示环形谐振器的相反传播方向的共振峰值。

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