公开(公告)号：US06654514B2

公开(公告)日：2003-11-25

申请号：US09968463

申请日：2001-10-01

申请人： Ronald J. Michal ,  Amado Cordova

发明人： Ronald J. Michal ,  Amado Cordova

IPC分类号： G02B628

CPC分类号： G02B6/4246 ,  G02B6/264 ,  G02B6/2706 ,  G02B6/29352 ,  G02B6/29395

摘要： An optical fiber interleaver and method for aligning the output channels to a set of nominal values in frequency space. The interleaver is formed of two optical fibers joined together at fused input and output couplers to define an input section, an interferometer section and an output section. Within the interferometer section, an element is arranged to vary the optical path length of at least one of the fibers in response to a feedback signal. The feedback signal is generated by examination of the intensity of a monitor signal at the output section that was applied at the input section.

摘要翻译： 一种用于将输出通道与频率空间中的一组标称值对准的光纤交织器和方法。 交织器由融合的输入和输出耦合器连接在一起的两根光纤形成，以限定输入部分，干涉仪部分和输出部分。 在干涉仪部分内，响应于反馈信号，元件布置成改变至少一根光纤的光路长度。 通过检查在输入部分处施加的输出部分处的监视信号的强度来生成反馈信号。

公开(公告)号：US06597842B2

公开(公告)日：2003-07-22

申请号：US09862146

申请日：2001-05-21

申请人： Jyl Ren Dent ,  Amado Cordova ,  Ronald J. Michal ,  Chin L. Chang ,  Trong-Huang Lee

发明人： Jyl Ren Dent ,  Amado Cordova ,  Ronald J. Michal ,  Chin L. Chang ,  Trong-Huang Lee

IPC分类号： G02B642

CPC分类号： G02B6/29353 ,  G02B6/29386 ,  G02B6/32

摘要： An optical interleaver. The interleaver is based upon the Mach Zender interferometer. At least one of the optical paths joining opposed couplers of the arrangement includes an optical image transfer element intermediate the ends of fibers associated with the couplers. In one embodiment, the optical image transfer element is a single imaging lens whereas, in another embodiment, the element consists of an aligned pair of collimating lenses. During fabrication, optical positioning stages support the optical image transfer element and fiber ends to permit ready adjustment of &Dgr;&THgr;, the optical path length difference between the arms of the interleaver, to assure predetermined optical channel spacing of an input DWDM signal.

公开(公告)号：US6040908A

公开(公告)日：2000-03-21

申请号：US123626

申请日：1998-07-28

申请人： John P. Rahn ,  Ralph A. Patterson ,  Amado Cordova

发明人： John P. Rahn ,  Ralph A. Patterson ,  Amado Cordova

IPC分类号： G01C19/72 ,  G02B6/44

CPC分类号： G01C19/722 ,  G02B6/4458

摘要： A method and apparatus for reducing the temperature-dependent Shupe bias of a potted gyro sensor coil pack to near-zero is provided by selectively adjusting the manner in which CCW and CW fiber leads are attached to the coil pack or the coil mount. The invention recognizes the inevitable existence of a strain differential between the CW and CCW-wound portions of a symmetrically-wound fiber coil. Leads affixed to the ends of the CW and CCW-wound halves of the coil are selectively bonded in accordance with principles for creating a counteracting temperature-dependent stress differential whereby temperature-dependent Shupe bias is substantially eliminated from the gyro output.

摘要翻译： 通过选择性地调节CCW和CW光纤引线附接到线圈组或线圈架上的方式，提供了将盆栽陀螺传感器线圈组的温度依赖性Shupe偏压降低到接近零的方法和装置。 本发明认识到对称卷绕的纤维线圈的CW和CCW卷绕部分之间的应变差的不可避免的存在。 根据用于产生抵消温度依赖性应力差的原理，固定到线圈的CW和CCW卷绕半部的端部的引线被选择性地接合，由此基本上从陀螺仪输出消除了温度依赖性的Shupe偏置。

公开(公告)号：US5847829A

公开(公告)日：1998-12-08

申请号：US841491

申请日：1997-04-23

申请人： Amado Cordova

发明人： Amado Cordova

IPC分类号： G01C19/72 ,  G01C19/64

CPC分类号： G01C19/722

摘要： A method for providing an optical fiber coil having reduced bias vibration and bias temperature-ramp sensitivity by controlling and adjusting coil geometrical factors including the coil potted length, the adhesive layer thickness, the number of turns per layer, the number of layers and the way the winding is terminated. The windings may be terminated to form the coil as a complete quadrupole, a diapole, an incomplete quadrupole or an incomplete diapole. By adjusting geometrical factors of the coil design, a coil for which the residual net Shupe bias is negligible is obtained.

摘要翻译： 一种用于通过控制和调节包括线圈封套长度，粘合剂层厚度，每层匝数，层数和方式的线圈几何因素来提供具有减小的偏置振动和偏置温度 - 斜坡灵敏度的光纤线圈的方法 绕组终止。 绕组可以被终止以形成线圈作为完整的四极杆，二极杆，不完全四极杆或不完全的二极。 通过调整线圈设计的几何因素，获得剩余净Shupe偏差可忽略的线圈。

公开(公告)号：US5742390A

公开(公告)日：1998-04-21

申请号：US751984

申请日：1996-11-19

申请人： Amado Cordova ,  Robert J. Hoover ,  Thomas McLean ,  Ralph A. Patterson ,  John P. Rahn

发明人： Amado Cordova ,  Robert J. Hoover ,  Thomas McLean ,  Ralph A. Patterson ,  John P. Rahn

IPC分类号： G01C19/72 ,  G02B6/44 ,  G01C19/64

CPC分类号： G01C19/722 ,  G02B6/4457

摘要： A potted sensor coil for a fiber optic gyroscope includes an inter-layer stress relief layer of lubricating material. The coil is wound into a known pattern. Various coil configurations can be realized in which a coating layer of lubricant relieves stressing at the interface between the outer jacket of the fiber and the coil potting material.

摘要翻译： 用于光纤陀螺仪的盆式传感器线圈包括润滑材料的层间应力消除层。 线圈缠绕成已知的图案。 可以实现各种线圈构造，其中润滑剂涂层在纤维的外护套和线圈灌封材料之间的界面处减轻应力。

公开(公告)号：US5682241A

公开(公告)日：1997-10-28

申请号：US613558

申请日：1996-03-11

申请人： John G. Mark ,  Daniel A. Tazartes ,  Amado Cordova

发明人： John G. Mark ,  Daniel A. Tazartes ,  Amado Cordova

IPC分类号： G01C19/72

CPC分类号： G01C19/72

摘要： A phase modulator applies sequences of artificial phase shifts in the region of overmodulation between light beams counterpropagating within the sensor coil of a Sagnac interferometer to obtain improved random walk performance. The sequences are composed of phase shifts of .+-.a.pi./2b and .+-.(4b-a).pi./2b where a is an odd integer and b is an integer greater than 1. The waveform for driving the phase modulator is derived from a 2.pi. radian mapping plotted so that adjacent driving signal values differ by a.pi./2b or -(4b-a).pi./2b in a first angular direction and by -a.pi./2b or by (4b-a).pi./2b in the opposite angular direction. Angular transitions about the mapping may be predetermined to generate a deterministic, random, or pseudo-random modulation sequence. In the event that a deterministic sequence is chosen, it is examined for orthogonality properties to assume zero average output bias from crosstalk.

摘要翻译： 相位调制器在Sagnac干涉仪的传感器线圈内的反向传播的光束之间的过调制区域中施加人造相移序列，以获得改进的随机游走性能。 序列由+/- a pi / 2b和+/-（4b-a）pi / 2b的相移组成，其中a是奇整数，b是大于1的整数。用于驱动相位调制器的波形是 衍生自2 pi弧度映射，使得相邻的驱动信号值在第一角度方向上以pi-2b或 - （4b-a）pi / 2b和-a / 2b或由（4b-a）pi / 2b在相反的角度方向。 关于映射的角度转换可以被预先确定以产生确定性，随机或伪随机调制序列。 在选择确定性序列的情况下，检查正交性质以假定来自串扰的零平均输出偏差。

公开(公告)号：US5486922A

公开(公告)日：1996-01-23

申请号：US359424

申请日：1994-12-20

申请人： Amado Cordova

发明人： Amado Cordova

IPC分类号： G01C19/72 ,  G01C19/64

CPC分类号： G01C19/722

摘要： A spool for receiving a fiber optic sensor coil is selectively fabricated of materials of different coefficients of thermal expansion to thereby mimic the anisotropic thermal expansion characteristics of a potted sensor coil. The spool can include one or a pair of planar flanges fixed to the end(s) of a central cylindrical hub. The hub is preferentially fabricated in part of a polymer while the flange(s) is of low coefficient of expansion material such as titanium to thereby approximate the differential thermal expansions of a potted sensor coil in the axial and radial directions, respectively.

摘要翻译： 用于接收光纤传感器线圈的线轴由具有不同热膨胀系数的材料选择性地制造，从而模拟一个盆式传感器线圈的各向异性热膨胀特性。 阀芯可以包括固定到中心圆柱形毂的端部的一个或一对平面凸缘。 轮毂优选地制造在聚合物的一部分中，而凸缘具有低膨胀系数的材料，例如钛，从而分别近似于盆式传感器线圈在轴向和径向方向上的差热膨胀。

公开(公告)号：US06486960B2

公开(公告)日：2002-11-26

申请号：US09795813

申请日：2001-02-27

申请人： Amado Cordova ,  Thomas McLean ,  Thomas Meloeny

发明人： Amado Cordova ,  Thomas McLean ,  Thomas Meloeny

IPC分类号： G01B902

CPC分类号： G01C19/722

摘要： A tool for forming a sensor coil that may be employed, for example, in a fiber optic gyroscope with reduced Shupe effect-induced bias. The tool includes a takeup reel having a cylindrical mandrel with inner flanges fixed to its opposed ends sandwiched between two outer flanges. Each of the inner flanges includes a pair of radially-directed apertures that form a radially-directed wedge therebetween. A recess in the planar portion of each of the outer flanges that contacts an inner flange is aligned with the apertures. This permits the winding of the sensor coil to form climbing turns at the ends of wound layers that lie outside an encapsulated fiber pack. Such turns, which join layers with overlying layers, avoid crossovers and the resultant stress that contributes significantly to Shupe effect-induced bias. A sensor coil having reduced internal stress is thus also provided.

摘要翻译： 用于形成传感器线圈的工具，其可以例如在具有减小的Shupe效应引起的偏压的光纤陀螺仪中使用。 该工具包括具有圆柱形心轴的卷取卷轴，其具有固定在夹在两个外凸缘之间的相对端部的内凸缘。 每个内凸缘都包括一对在其间形成径向楔形的径向定向的孔。 每个外凸缘的与内凸缘接触的平面部分中的凹部与孔对准。 这允许传感器线圈的卷绕在位于封装的纤维包之外的卷绕层的端部处形成攀登匝。 这样的匝连接层与上层，避免交叉和所产生的应力，显着影响Shupe效应诱导偏倚。 因此也提供了具有减小的内部应力的传感器线圈。

公开(公告)号：US6054068A

公开(公告)日：2000-04-25

申请号：US124803

申请日：1998-07-29

申请人： Kurt Randy Carlson ,  Amado Cordova ,  John P. Rahn

发明人： Kurt Randy Carlson ,  Amado Cordova ,  John P. Rahn

IPC分类号： G01C19/72 ,  G02B6/44 ,  B29D11/00

CPC分类号： G01C19/722 ,  G02B6/4457

摘要： A potting compound for use in the fabrication of fiber optic gyro sensor coils utilizes a silver-filled silicone base to reduce gyro sensitivity to changes in heat rate and thereby improve gyro performance during warm-up and periods of thermal cycling.

公开(公告)号：US5767970A

公开(公告)日：1998-06-16

申请号：US661166

申请日：1996-06-10

申请人： Amado Cordova

发明人： Amado Cordova

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. A continuous optical fiber is coated with bonding material of predetermined composition such as a thermoplastic material that exhibits a bond strength of at least 100 p.s.i. in tension, equivalent to at least 40 p.s.i. in shear. The coated fiber is arranged into a predetermined winding pattern whereby contacting portions of adjacent coil turns are bonded to one another. Void spaces between contacting portions of bonded turns reduce the volume of bonding material employed (as opposed to a filled potted sensor coil). The coil does not experience the differential in expansion along the axial and radial directions to the degree that has, for example, required the use of single flanged spools in the prior art. Its use with dual-flanged spools permits mounting arrangements that promote coil stiffness, thereby enhancing gyro performance in the presence of vibration.

摘要翻译： 用于光纤陀螺仪的传感器线圈。 连续的光纤被涂覆有预定组成的结合材料，例如表现出至少100p.s.i的粘结强度的热塑性材料。 处于紧张状态，相当于至少40 p.s.i。 在剪切。 被覆纤维被布置成预定的卷绕图案，由此相邻线圈的接触部分彼此接合。 接合线圈的接触部分之间的空隙减少了所使用的接合材料的体积（与填充的传感器线圈相反）。 线圈在轴向和径向方向上不会经受膨胀差异，例如在现有技术中需要使用单凸缘线轴。 它与双法兰卷轴的使用允许安装布置，以促进线圈刚度，从而增加振动的陀螺仪性能。