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81. 发明授权

US07460741B2 Fiber optic current sensor and method for sensing current using the same 失效
公开(公告)号：US07460741B2
公开(公告)日：2008-12-02
申请号：US11647654
申请日：2006-12-29
申请人： Glen A. Sanders , Steve J. Sanders
发明人： Glen A. Sanders , Steve J. Sanders
IPC分类号： G02B6/00
CPC分类号： G01R15/246
摘要： An apparatus for sensing current and a method for sensing current are provided. The apparatus includes an optical fiber having first and second opposing ends and a hollow passageway therethrough, 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 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 therethrough, and a Faraday sensitive material positioned in the optical loop such that the light passes therethrough, an index of refraction of the Faraday sensitive material changes when a current flows through the opening of the optical loop.

82. 发明授权

US06301400B1 Fiber optic current sensor having rotation immunity 有权
标题翻译：具有旋转抗扰度的光纤电流传感器
公开(公告)号：US06301400B1
公开(公告)日：2001-10-09
申请号：US09190873
申请日：1998-11-12
申请人： Glen A. Sanders
发明人： Glen A. Sanders
IPC分类号： G02B600
CPC分类号： G01R15/246 , G01R15/247
摘要： An interferometric sensor having an optic fiber which forms a sensing loop optical path and a second loop that is wound in the opposite direction of the sensor loop. Circularly polarized light propagates along the optical path of the sensing loop. A differential phase shift is induced in the light waves by a magnetic field of the current in a conductor. The light waves with their phase relationship are detected by a photo detector which outputs an electrical signal that is processed by loop closure electronics into a signal indicative of the current's magnitude and direction. If the phase shift due to rotation is sensed in the sensing loop, then that phase shift is canceled by an opposite phase shift from the compensating loop. The compensating loop or coil may be reversed in connections, or flipped over, for calibrating the current sensor. Also, with a small sensor coil, delay line compensating coils may be used in the optical circuit, so that the bias modulation frequency can be made low enough for low drift loop closure electronics.
摘要翻译：一种干涉测量传感器，其具有形成感测回路光路的光纤和沿传感器回路的相反方向缠绕的第二回路。圆偏振光沿传感环路的光路传播。通过导体中的电流的磁场在光波中感应出差分相移。具有相位关系的光波由光检测器检测，光电检测器将由闭环电路处理的电信号输出到指示电流的大小和方向的信号。如果在感测回路中感测到由旋转产生的相移，那么该相移将被来自补偿回路的相反的相移所抵消。补偿回路或线圈可以在连接中反转或翻转，用于校准电流传感器。另外，利用小的传感器线圈，可以在光电路中使用延迟线补偿线圈，使得偏置调制频率可以被制成足够低以用于低漂移闭环电路。

83. 发明授权

US5923424A Fiber optic gyroscope vibration error compensator 失效
标题翻译：光纤陀螺仪振动误差补偿器
公开(公告)号：US5923424A
公开(公告)日：1999-07-13
申请号：US879902
申请日：1997-06-19
申请人： Glen A. Sanders , Rudolf C. Dankwort , Andrew W. Kaliszek , Clarence E. Laskoskie , Lee K. Strandjord , Daniel L. Sugarbaker , Jerry L. Page
发明人： Glen A. Sanders , Rudolf C. Dankwort , Andrew W. Kaliszek , Clarence E. Laskoskie , Lee K. Strandjord , Daniel L. Sugarbaker , Jerry L. Page
IPC分类号： G01C19/72
CPC分类号： G01C19/728 , G01C19/721
摘要： A rectification error reducer for a fiber optic gyroscope, which is an intensity servo or compensator for reducing vibration effects in the optical signals caused by modulation at vibration frequencies induced by the gyroscope operating environment. The vibration effects may be detected in signals from the photodiode output in amplitude form which is used in a control system to null out optical intensity variations at the frequencies of vibration.
摘要翻译：一种用于光纤陀螺仪的整流误差减小器，其是用于减少由由陀螺仪操作环境引起的振动频率下的调制引起的光信号中的振动效应的强度伺服或补偿器。可以在振幅形式的光电二极管输出的信号中检测振动效应，该控制系统用于消除振动频率处的光强度变化。

84. 发明授权

US5563705A Optical power balancing in interferometric fiber optic gyroscopes 失效
标题翻译：干涉光纤陀螺仪中的光功率平衡
公开(公告)号：US5563705A
公开(公告)日：1996-10-08
申请号：US476921
申请日：1995-06-07
申请人： Glen A. Sanders
发明人： Glen A. Sanders
IPC分类号： G01C19/72 , G01C19/64
CPC分类号： G01C19/721
摘要： An interferometric fiber optic gyroscope having a wavelength-sensitive splitter which has a splitting ratio that changes according to light wavelength. A feedback circuit indicates any difference that there might be in the intensities of counterpropagating beams in the sensing loop of the gyroscope, and provides a signal to the light source to change the light wavelength in a direction to cause the splitter ratio to change so as to equalize the beams' intensities for eliminating the Kerr effect.
摘要翻译：具有波长敏感分离器的干涉光纤陀螺仪具有根据光波长而变化的分束比。反馈电路表示在陀螺仪的感测环路中的反向传播光束的强度可能存在的差异，并且向光源提供信号以在一个方向上改变光波长以使分束器比率发生变化，从而均衡梁的强度以消除克尔效应。

85. 发明授权

US5465149A Lightwave phase control for reduction of resonator fiber optic gyroscope Kerr effect error 失效
标题翻译：光波相位控制用于减少谐振器光纤陀螺仪的克尔效应误差
公开(公告)号：US5465149A
公开(公告)日：1995-11-07
申请号：US209510
申请日：1994-03-10
申请人： Lee J. Strandjord , Glen A. Sanders
发明人： Lee J. Strandjord , Glen A. Sanders
IPC分类号： G01C19/72
CPC分类号： G01C19/727
摘要： An error reducer for reducing rotation rate errors arising because of an optical Kerr effect occurring in a coiled optical fiber in a rotation sensor. Through amplitude modulating electromagnetic waves propagating in that coil. A signal obtained from the coil based on the amplitude modulation component therein is used in a feedback loop to reduce or eliminate such errors.
摘要翻译：一种用于减少由于在旋转传感器中卷绕的光纤中发生的光克尔效应而产生的旋转速率误差的误差减小器。通过振幅调制在该线圈中传播的电磁波。基于其中的幅度调制分量从线圈获得的信号用于反馈回路中以减少或消除这种误差。

86. 发明授权

US5349441A Fiber optic gyroscope refractive index induced error compensation 失效
$Fiber optic gyroscope refractive index induced error compensation$
标题翻译：光纤陀螺折射率引起误差补偿
公开(公告)号：US5349441A
公开(公告)日：1994-09-20
申请号：US740741
申请日：1991-08-06
申请人： Glen A. Sanders
发明人： Glen A. Sanders
IPC分类号： G01C19/72 , G01B9/02
CPC分类号： G01C19/727
摘要： An error compensator for a resonator fiber optic gyroscope extracting characteristics from the output signal of a photodetector, receiving electromagnetic waves from the resonator, and combining them to result in a determination of substantially the rotation rate error that is due to the effect of a nonlinear refractive index occurring in the resonator. This determination can be used to compensate the system output signal to eliminate rotation rate errors of such a nature therefrom.
摘要翻译：用于谐振器光纤陀螺仪的误差补偿器，从光电检测器的输出信号中提取特性，接收来自谐振器的电磁波，并将它们组合起来，从而确定基于非线性折射效应的旋转速率误差在谐振器中发生指数。该确定可以用于补偿系统输出信号以消除这种性质的旋转误差。

87. 发明授权

US5018857A Passive ring resonator gyro with polarization rotating ring path 失效
标题翻译：无源环谐振器陀螺仪具有极化旋转环路径
公开(公告)号：US5018857A
公开(公告)日：1991-05-28
申请号：US244983
申请日：1988-09-15
申请人： Glen A. Sanders , Robert B. Smith , Gordon F. Rouse
发明人： Glen A. Sanders , Robert B. Smith , Gordon F. Rouse
IPC分类号： G01C19/72
CPC分类号： G01C19/727 , G02F2001/211 , G02F2203/15
摘要： A passive ring resonator gyro is constructed of an electromagnetic waveguide ring path which causes a specified rotation of the polarization of the waves, once for each round trip through the ring path. For an optical fiber ring path, a splice at some point is introduced in the ring path in which the fiber ends are rotated relative to each other in order to effect polarization rotation.
摘要翻译：无源环形谐振器陀螺仪由电磁波导环路径构成，其导致波的极化的指定旋转，一次是通过环路的每次往返行程。对于光纤环路，在环路中引入某一点处的接头，其中光纤端部相对于彼此旋转以实现偏振旋转。

88. 发明授权

US08736845B2 Frequency stabilized laser system 有权
标题翻译：频率稳定的激光系统
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。

89. 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。

90. 发明申请

US20140044142A1 LASER WITH TRANSMISSION AND REFLECTION MODE FEEDBACK CONTROL 有权
标题翻译：激光与反射模式反馈控制
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。

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