公开(公告)号：US4662751A

公开(公告)日：1987-05-05

申请号：US779744

申请日：1985-09-24

申请人： Willis C. Goss ,  Bruce R. Youmans ,  Noble M. Nerheim ,  Randall K. Bartman

发明人： Willis C. Goss ,  Bruce R. Youmans ,  Noble M. Nerheim ,  Randall K. Bartman

IPC分类号： G01C19/72 ,  G01B9/02

CPC分类号： G01C19/726

摘要： An improved optical gyroscope is provided, of the type that passes two light components in opposite directions through an optic fiber coil, and which adds a small variable frequency to one of the light components to cancel the phase shift due to rotation of the coil. The amount of coil rotation from an initial orientation, is accurately determined by combining the two light components, one of which has a slightly increased frequency, to develop beats that each represent a predetermined angle of rotation. The direction of rotation is obtained by combining the two light components on a photodetector, intermittently phase shifting a single light component by 90.degree., and comparing the direction of change of photodetector output (+ or -) caused by the 90.degree. shift, with the slope (+ or -) of the photodetector output at about the same time, when there is a 90.degree. shift.

摘要翻译： 提供了一种改进的光学陀螺仪，其类型是通过光纤线圈在相反方向上通过两个光分量，并且将一个小的可变频率添加到一个光分量以消除由于线圈的旋转引起的相移。 通过组合两个光分量（其中之一具有稍微增加的频率）来精确地确定来自初始取向的线圈旋转量，以产生每个表示预定旋转角度的节拍。 通过将光电检测器上的两个光分量组合，将单个光分量间歇相移90°，并将由90°偏移引起的光检测器输出（+或 - ）的变化方向与 大约在同一时间，当有90°偏移时，光电检测器输出的斜率（+或 - ）。

公开(公告)号：US4669882A

公开(公告)日：1987-06-02

申请号：US582494

申请日：1984-02-22

申请人： Willis C. Goss ,  James R. Janesick

发明人： Willis C. Goss ,  James R. Janesick

IPC分类号： G01C19/72 ,  G01C19/64

CPC分类号： G01C19/72

摘要： A sensor is described for detecting the difference in phase of a pair of returned light pulse components, such as the two components of a light pulse of an optical gyro. In an optic gyro, the two light components have passed in opposite directions through a coil of optical fiber, with the difference in phase of the returned light components determining the intensity of light shining on the sensor. The sensor includes a CCD (charge coupled device) that receives the pair of returned light components to generate a charge proportional to the number of photons in the received light. The amount of the charge represents the phase difference between the two light components. At a time after the transmission of the light pulse and before the expected time of arrival of the interfering light components, charge accumulating in the CCD as a result of reflections from optical components in the system, are repeatedly removed from the CCD, by transferring out charges in the CCD and dumping these charges.

摘要翻译： 描述了用于检测一对返回的光脉冲分量的相位差的传感器，例如光学陀螺仪的光脉冲的两个分量。 在光学陀螺仪中，两个光分量通过光纤线圈在相反的方向上通过，返回的光分量的相位差决定了传感器上的光照强度。 传感器包括CCD（电荷耦合器件），其接收一对返回的光分量以产生与接收光中的光子数成比例的电荷。 电荷量表示两个光分量之间的相位差。 在发出光脉冲之后并且在干扰光分量的预期到达时间之前的时刻，由于系统中的光学部件的反射，在CCD中累积的电荷从CCD中重复地从CCD中移出，通过转出 在CCD中收取费用并倾销这些费用。

公开(公告)号：US4280766A

公开(公告)日：1981-07-28

申请号：US972252

申请日：1978-12-22

申请人： Willis C. Goss ,  Raymond Goldstein

发明人： Willis C. Goss ,  Raymond Goldstein

IPC分类号： G01C19/72 ,  G01C19/64

CPC分类号： G01C19/72

摘要： An optical gyroscope is described of the type which passes light beams in opposite directions through a single mode fiber optic wave guide that extends in a circle or coil, and which enables measurement of rotation rate of the coil by measuring the relative phase shifts of the beams by interferometric techniques, wherein simplification and enhanced accuracy are obtained. Beam splitting and phase shifting of the light is facilitated by utilizing brief pulses of light and by using light-controlling devices which are operated for a brief time only when the light pulse passes in one direction through the device but not at a different time when the pulse is passing in the opposite direction through the device. High accuracy in rotation measurement is achieved at both very slow and very fast rotation rates, by alternately operating the system so that at zero rotation the interfering waves are alternately 90.degree. out of phase and in phase. Linear polarization of the light beams is maintained by coiling the full length of the optic fiber in a single plane so that bending stresses induce a birefringence in the waveguide, thus altering the propagation constants of the two polarized modes and decoupling them.

摘要翻译： 描述了通过以一个圆形或线圈形式延伸的单模光纤波导通过相反方向通过光束的类型的光学陀螺仪，并且能够通过测量光束的相对相移来测量线圈的旋转速度 通过干涉技术，可以获得简化和增强的精度。 通过使用短脉冲光并且通过使用仅在光脉冲沿着一个方向穿过该装置而不是在不同时间经过短时间操作的光控制装置来促进光的分束和相移 脉冲通过装置的相反方向。 通过交替操作系统使得在零旋转时，干扰波相互90°相位和相位相位是相反的，在非常慢和非常快的旋转速度下实现了高精度的旋转测量。 通过在单个平面中卷绕光纤的全长来维持光束的线性偏振，使得弯曲应力在波导中引起双折射，从而改变两个偏振模式的传播常数并将其解耦。

公开(公告)号：US4523810A

公开(公告)日：1985-06-18

申请号：US342828

申请日：1982-01-26

申请人： Willis C. Goss ,  Mark D. Nelson ,  John M. McLauchlan

发明人： Willis C. Goss ,  Mark D. Nelson ,  John M. McLauchlan

IPC分类号： G02B6/245 ,  G02B6/28 ,  G02B6/38 ,  G02B5/14

CPC分类号： G02B6/2555 ,  G02B6/245 ,  G02B6/2821 ,  G02B6/283 ,  G02B6/2835 ,  G02B6/2843 ,  G02B6/255 ,  G02B6/3616 ,  Y10S359/90

摘要： Systems are described for coupling a pair of optical fibers to pass light between them, which enables a coupler to be easily made, and with simple equipment, while closely controlling the characteristics of the coupler. One method includes mounting a pair of optical fibers (12A, 14A) on a block (26) having a large hole (28) therein, so the fibers extend across the hole while lying adjacent and parallel to one another. The fibers are immersed in an etchant (40) to reduce the thickness of cladding (20) around the fiber core (18). The fibers are joined together by applying a liquid polymer (16, FIG. 6) so the polymer-air interface moves along the length of the fibers to bring the fibers together in a zipper-like manner, and to progressively lay a thin coating of the polymer on the fibers.

摘要翻译： 描述了用于耦合一对光纤以在它们之间传递光的系统，这使得能够容易地制造耦合器，并且在简单的设备下，同时紧密地控制耦合器的特性。 一种方法包括将一对光纤（12A，14A）安装在其中具有大孔（28）的块（26）上，使得光纤在相邻并且彼此平行的同时延伸穿过孔。 将纤维浸入蚀刻剂（40）中以减小围绕纤维芯（18）的包层（20）的厚度。 通过施加液体聚合物（图6中的16）将纤维连接在一起，使得聚合物 - 空气界面沿着纤维的长度移动，以使纤维以拉链状的方式在一起，并且逐渐铺设薄的 纤维上的聚合物。

公开(公告)号：US4533242A

公开(公告)日：1985-08-06

申请号：US425202

申请日：1982-09-28

申请人： John M. McLauchlan ,  John AuYeung ,  Eldred F. Tubbs ,  Willis C. Goss ,  Demetri Psaltis

发明人： John M. McLauchlan ,  John AuYeung ,  Eldred F. Tubbs ,  Willis C. Goss ,  Demetri Psaltis

IPC分类号： G01S17/10 ,  G01C3/08

CPC分类号： G01S17/10

摘要： A system is described for measuring the distance to an object by comparing a first component (18) of a light pulse that is reflected off the object (14), with a second component (20) of the light pulse that passes along a reference path (26) of known length, which provides great accuracy with a relatively simple and rugged design. The reference path (26) can be changed in precise steps so that is has an equivalent length approximately equal to the path length of the light pulse component that is reflected from the object. The resulting small difference in path lengths can be precisely determined by directing the light pulse components into opposite ends of a detector (70) formed of a material that emits a second harmonic light output at the locations where the opposite-going pulses pass simultaneously across one another.

摘要翻译： 描述了一种系统，用于通过将从物体（14）反射的光脉冲的第一分量（18）与通过参考路径的光脉冲的第二分量（20）进行比较来测量到物体的距离 （26），其具有相对简单和坚固的设计提供了高精度。 参考路径（26）可以精确地改变，使得具有近似等于从物体反射的光脉冲分量的路径长度的等效长度。 可以通过将光脉冲分量引导到由在相反的脉冲同时跨越一个的位置发射二次谐波光输出的材料形成的检测器（70）的相对端中来精确地确定所产生的小的路径长度差异 另一个。