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21. 发明授权

US5545892A Gyro sensor coil with low-friction hub interface 失效
标题翻译：陀螺传感线圈具有低摩擦轮毂接口
公开(公告)号：US5545892A
公开(公告)日：1996-08-13
申请号：US299585
申请日：1994-09-01
申请人： Donald J. Bilinski , Gene H. Chin , Amado Cordova , Samuel N. Fersht
发明人： Donald J. Bilinski , Gene H. Chin , Amado Cordova , Samuel N. Fersht
IPC分类号： G01C19/72 , G02B6/00 , G02B6/44 , G01D5/34 , G01B9/02
CPC分类号： G01C19/722 , G02B6/4457
摘要： A spool for receiving a fiber optic sensor coil includes a single, substantially-planar mounting flange and a central hub. The coil can be directly wound upon the hub. The coil is mounted transverse to the plane of the mounting flange and is unconfined in that direction as the surface of the hub is substantially non-adhesive with respect to the inner layer of the coil. This allows axial coil expansion with increases in temperature without generating gyro bias errors. The device is also substantially free from vibration-induced bias errors due to the relatively high resonant frequency (vis a vis environmental vibration) of the integral spool-plus-coil structure.
摘要翻译：用于接收光纤传感器线圈的线轴包括单个基本上平面的安装凸缘和中心毂。线圈可以直接缠绕在轮毂上。线圈横向于安装凸缘的平面安装，并且在该方向上不受约束，因为毂的表面相对于线圈的内层基本上是非粘性的。这允许在不产生陀螺仪偏置误差的情况下随着温度升高而轴向线圈膨胀。由于整体的线轴加线圈结构的相对高的共振频率（相对于环境振动），该装置也基本上没有振动引起的偏置误差。

22. 发明授权

US5371593A Sensor coil for low bias fiber optic gyroscope 失效
标题翻译：低偏光纤陀螺传感线圈
公开(公告)号：US5371593A
公开(公告)日：1994-12-06
申请号：US938294
申请日：1992-08-31
申请人： Amado Cordova , Donald J. Bilinski , Samuel N. Fersht , Glenn M. Surabian , John D. Wilde , Paul A. Hinman
发明人： Amado Cordova , Donald J. Bilinski , Samuel N. Fersht , Glenn M. Surabian , John D. Wilde , Paul A. Hinman
IPC分类号： G01C19/72 , G02B6/44
CPC分类号： G02B6/4457 , G01C19/722
摘要： A sensor coil for a fiber optic gyroscope. The coil is formed on a spool of carbon composite material or of another material whose coefficient of thermal expansion approximates that of the overlying windings of the glass optical fiber. The windings are potted in an adhesive material. Various bias effects are addressed by the coil design. The close matching of the thermal expansion characteristics of the spool and the fiber windings as well as proper selection of the coil potting material minimize the Shupe-like bias caused by thermal stress that would be otherwise exerted by a standard metallic spool. By careful selection of potting material (particularly its modulus of elasticity) vibration-induced bias, coil cracking, degradation of h-parameter and temperature-ramp bias sensitivity are also minimized.
摘要翻译：用于光纤陀螺仪的传感器线圈。线圈形成在碳复合材料的卷轴上，或者其热膨胀系数接近玻璃光纤的上覆绕组的材料。绕组以一种粘合剂材料灌装。线圈设计可以解决各种偏压效应。卷轴和纤维绕组的热膨胀特性的紧密匹配以及线圈灌封材料的适当选择最小化了由标准金属线轴施加的热应力引起的Shupe样偏差。通过仔细选择灌封材料（特别是其弹性模量）振动引起的偏压，线圈破裂，h参数的降低和温度 - 斜坡偏差灵敏度也被最小化。

23. 发明授权

US5260768A Fiber optic gyro with low-birefringence and PM networks 失效
标题翻译：具有低双折射和PM网络的光纤陀螺
公开(公告)号：US5260768A
公开(公告)日：1993-11-09
申请号：US797198
申请日：1991-11-25
申请人： Amado Cordova , George A. Pavlath
发明人： Amado Cordova , George A. Pavlath
IPC分类号： G01C19/72
CPC分类号： G01C19/728 , G01C19/721
摘要： A fiber optic gyroscope is formed of two distinct sections, one having optical paths of low-birefringence fiber and the other having paths formed of polarization-maintaining (PM) fiber. The two sections are joined at a low-birefringence-PM fiber splice. The PM section includes at least one MIOC and an associated rotation sensing coil of PM fiber while the low-birefringence section includes the optical source, and associated couplers and detectors. The arrangement minimizes polarization fading and polarization non-reciprocity (PNR) bias error while allowing maximum use of lower cost and, in many cases, more durable, components to minimize overall system cost without loss of performance.
摘要翻译：光纤陀螺仪由两个不同的部分形成，一个具有低双折射光纤的光路，另一个具有由偏振维持（PM）光纤形成的路径。两个部分在低双折射-PM光纤接头处连接。 PM部分包括至少一个MIOC和相关联的PM光纤的旋转感测线圈，而低双折射部分包括光源以及相关联的耦合器和检测器。这种布置使极化衰减和极化不可逆（PNR）偏置误差最小化，同时允许最大限度地利用较低的成本，并且在许多情况下，更耐用的部件可以最大限度地降低总体系统成本而不会损失性能。

24. 发明授权

US5077087A Method of cladding single crystal optical fiber 失效
标题翻译：单晶光纤包层方法
公开(公告)号：US5077087A
公开(公告)日：1991-12-31
申请号：US491442
申请日：1990-02-28
申请人： Robert L. Byer , Amado Cordova , Michael Digonnet , Martin Fejer , Celestino Gaeta , Herbert J. Shaw , Shoichi Sudo
发明人： Robert L. Byer , Amado Cordova , Michael Digonnet , Martin Fejer , Celestino Gaeta , Herbert J. Shaw , Shoichi Sudo
IPC分类号： C03B37/023 , G02B6/02 , G02F1/035 , G02F1/377 , H01S3/067 , H01S3/092
CPC分类号： H01S3/092 , C03B37/023 , G02B6/02 , G02F1/0353 , G02F1/3775 , H01S3/06708
摘要： Methods and apparatus are shown for cladding grown single crystal optical fibers. Neodymium YAG fibers are clad with a high index glass, either melted around the fiber in a trough or extruded over the fiber surface. Lithium niobate fibers are clad through an impregnation process. The lithium niobate fiber is first coated with magnesium oxide and then heated to a temperature and for a time sufficient for the magnesium oxide dopant material to diffuse into the fiber. The dopant lowers the intrinsic refractive indices of the fiber material around its circumference, creating a cladding region around the fiber core. Single crystal fibers clad by these methods and combined with suitable pumping means or with deposited electrodes provide low-loss single mode optical components useful for amplification, electro-optical effects and acousto-optical effects.
摘要翻译：示出了用于包覆生长的单晶光纤的方法和装置。钕YAG纤维用高折射率玻璃包覆，在槽中围绕纤维熔化或在纤维表面上挤出。铌酸锂纤维通过浸渍工艺包覆。铌酸锂纤维首先用氧化镁涂覆，然后加热到足以使氧化镁掺杂剂材料扩散到纤维中的温度和时间。掺杂剂降低纤维材料围绕其圆周的固有折射率，从而在纤维芯周围产生包层区域。通过这些方法包覆的单晶纤维与合适的泵送装置或沉积电极组合提供了用于放大，电光效应和声光效应的低损耗单模光学部件。

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