公开(公告)号：US06801319B2

公开(公告)日：2004-10-05

申请号：US10038131

申请日：2002-01-03

申请人： Bogdan Szafraniec ,  Charles Lange ,  Andrew Kaliszek

发明人： Bogdan Szafraniec ,  Charles Lange ,  Andrew Kaliszek

IPC分类号： G01C1964

CPC分类号： G01C19/721

摘要： A fiber optic gyroscope (FOG) including a depolarizer having substantially equal first and second fiber segments of polarization maintaining (PM) fiber coupled to a single mode (SM) fiber loop. The first PM fiber segment includes sections of fiber connected together via a splice having an angle from about 35° to 55° between major axes of polarization of the sections which it connects. Similarly, the second PM fiber segment includes sections of fiber connected together via a splice having an angle from about 35° to 55° between major axes of polarization of the sections which it connects. The length of each fiber section is chosen to maintain the thermal and mechanical symmetry of the SM fiber loop.

摘要翻译： 一种光纤陀螺仪（FOG），其包括具有与单模（SM）光纤回路耦合的基本相等的第一和第二光纤维段（PM）光纤段的去偏振器。 第一PM纤维段包括通过接头连接在一起的纤维部分，所述接头在其连接的部分的主要极化轴之间具有大约35°至55°的角度。 类似地，第二PM纤维段包括通过接头连接在一起的纤维部分，其在连接的部分的主要极化轴之间具有大约35°至55°的角度。 选择每个纤维部分的长度以保持SM纤维环的热和机械对称性。

公开(公告)号：US07272280B2

公开(公告)日：2007-09-18

申请号：US11013773

申请日：2004-12-16

申请人： Bogdan Szafraniec ,  Charles Lange

发明人： Bogdan Szafraniec ,  Charles Lange

IPC分类号： G02B6/26

CPC分类号： G02B6/2821 ,  G02B6/125 ,  G02B2006/12147

摘要： An optical coupler for measuring mean wavelength of a broadband optical source is described. Sensitivity of the optical coupler to variations of refractive index and coupler length is minimized. The sensitivity to the variations of the refractive index is minimized by making a difference between the group refractive indices of the symmetric and asymmetric propagation modes approximately constant and independent of the refractive index. The sensitivity to the variations of the coupler length is minimized by selecting the coupler length that makes output powers from two waveguides to the first order insensitive to its length. This selection is possible for broadband optical sources.

摘要翻译： 描述了用于测量宽带光源的平均波长的光耦合器。 光耦合器对折射率和耦合器长度的变化的灵敏度被最小化。 通过使对称和不对称传播模式的组折射率之间的差近似恒定且与折射率无关，使对折射率变化的敏感度最小化。 通过选择使来自两个波导的输出功率到对其长度不敏感的一阶的耦合器长度来最小化耦合器长度的变化的灵敏度。 这种选择对于宽带光源是可能的。

公开(公告)号：US20060133734A1

公开(公告)日：2006-06-22

申请号：US11013773

申请日：2004-12-16

申请人： Bogdan Szafraniec ,  Charles Lange

发明人： Bogdan Szafraniec ,  Charles Lange

IPC分类号： G02B6/26

CPC分类号： G02B6/2821 ,  G02B6/125 ,  G02B2006/12147

摘要： An optical coupler for measuring mean wavelength of a broadband optical source is described. Sensitivity of the optical coupler to variations of refractive index and coupler length is minimized. The sensitivity to the variations of the refractive index is minimized by making a difference between the group refractive indices of the symmetric and asymmetric propagation modes approximately constant and independent of the refractive index. The sensitivity to the variations of the coupler length is minimized by selecting the coupler length that makes output powers from two waveguides to the first order insensitive to its length. This selection is possible for broadband optical sources.

摘要翻译： 描述了用于测量宽带光源的平均波长的光耦合器。 光耦合器对折射率和耦合器长度的变化的灵敏度被最小化。 通过使对称和不对称传播模式的组折射率之间的差近似恒定且与折射率无关，使对折射率变化的敏感度最小化。 通过选择使来自两个波导的输出功率到对其长度不敏感的一阶的耦合器长度来最小化耦合器长度的变化的灵敏度。 这种选择对于宽带光源是可能的。

公开(公告)号：US07095910B2

公开(公告)日：2006-08-22

申请号：US10355464

申请日：2003-01-31

申请人： James Blake ,  Charles Lange

发明人： James Blake ,  Charles Lange

IPC分类号： G02F1/295 ,  G02B6/26 ,  G02B6/42

CPC分类号： G02B6/2821

摘要： An exemplary WDM coupling device may include optical fibers. The coupling device may also include region(s) having varying coefficients of thermal expansion. During a temperature variation, one or more of the region(s) may alter in size to substantially cancel temperature-dependent changes associated with the WDM coupling device.

摘要翻译： 示例性的WDM耦合装置可以包括光纤。 耦合装置还可以包括具有变化的热膨胀系数的区域。 在温度变化期间，该区域中的一个或多个可以改变尺寸以基本上消除与WDM耦合装置相关联的温度依赖性变化。

公开(公告)号：US20070201792A1

公开(公告)日：2007-08-30

申请号：US11364024

申请日：2006-02-27

申请人： Charles Lange

发明人： Charles Lange

IPC分类号： G02B6/26

CPC分类号： G02B6/125 ,  G02B6/126 ,  G02F1/035 ,  G02F1/3137

摘要： An optical waveguide device is provided for receiving light that has a guided mode and an unguided mode. The device comprises an optically transmissive substrate having first and second substantially opposite surfaces, an input end, and an output end. An optical waveguide region is disposed within the substrate and extends from the input to the output. A plurality of electrodes is disposed on the first surface at predetermined locations with respect to the waveguide region. The device includes a plurality of optical barriers each disposed proximate one of the first and second surfaces and positioned to block a different optical path of the unguided mode.

摘要翻译： 提供一种用于接收具有引导模式和非导向模式的光的光波导装置。 该装置包括具有第一和第二基本上相对的表面的光学透射基底，输入端和输出端。 光波导区域设置在基板内并从输入端延伸到输出端。 多个电极相对于波导区域在预定位置设置在第一表面上。 该装置包括多个光学屏障，每个光学屏障设置在第一和第二表面之一附近并且被定位成阻挡非导向模式的不同光路。

公开(公告)号：US20050191008A1

公开(公告)日：2005-09-01

申请号：US10786143

申请日：2004-02-26

申请人： Scott Anson ,  Charles Lange ,  Thomas Greening

发明人： Scott Anson ,  Charles Lange ,  Thomas Greening

IPC分类号： G01C19/72 ,  G02B6/26

CPC分类号： G01C19/721

摘要： Fiber optic gyroscope architectures that incorporate both (i) a WDM-based wavelength control and (ii) a wavelength reference based on a narrowband fiber Bragg grating (FBG), with the latter component providing significant improvement in the stability of the wavelength reference by calibrating out wavelength errors associated with a WDM-based wavelength control scheme.

摘要翻译： 光纤陀螺仪结构包括（i）基于WDM的波长控制和（ii）基于窄带光纤布拉格光栅（FBG）的波长参考，后一个组件通过校准提供了对波长参考的稳定性的显着改进 与基于WDM的波长控制方案相关联的波长误差。

公开(公告)号：US06798523B2

公开(公告)日：2004-09-28

申请号：US10004651

申请日：2001-12-04

申请人： Charles Lange ,  Scott Anson ,  Dick Ang

发明人： Charles Lange ,  Scott Anson ,  Dick Ang

IPC分类号： G01B902

CPC分类号： G01M11/333 ,  G01D5/35325 ,  G01K11/32 ,  G01M11/331

摘要： A fiber optic fault detector and generic fiber optic sensor system for detecting breaks in an optical fiber using a low coherence interferometric technique. The system comprises a light source configured to produce light traveling along the optical path, a modulator optically coupled to the light source configured to modulate at least a portion of the light as a function of a modulation signal, a detector optically coupled to the modulator configured to produce a detector output based upon a sensed intensity of the light, and an electronic array configured to receive the detector output and determine the optical fault. The low coherence interferometric technique allows for detection of a fault in the fiber with a minimal amount of test equipment and with higher measurement sensitivity and resolution. The system may alternatively include a transducer, positioned in place of the fiber under test, having a response which changes in reflective or optical path length. The system can be used in a LIDAR system, wherein telescope optics are used in place of the fiber under test, to transmit light and collect light scattered from objects or from the air.

摘要翻译： 一种用于使用低相干干涉技术检测光纤中断的光纤故障检测器和通用光纤传感器系统。 该系统包括被配置为产生沿着光路行进的光的光源，光学耦合到光源的调制器，被配置成根据调制信号调制至少一部分光;光耦合到调制器的检测器 以产生基于感测到的光强度的检测器输出;以及电子阵列，被配置为接收检测器输出并确定光学故障。 低相干干涉技术允许用最小量的测试设备和更高的测量灵敏度和分辨率来检测光纤中的故障。 替代地，该系统可以包括位于被测光纤上的换能器，具有反射或光路长度变化的响应。 该系统可以用在LIDAR系统中，其中使用望远镜光学器件来代替被测光纤，以透射光并收集从物体或从空气散射的光。

公开(公告)号：US20070110365A1

公开(公告)日：2007-05-17

申请号：US11280719

申请日：2005-11-15

申请人： Michael Malkin ,  Charles Lange

发明人： Michael Malkin ,  Charles Lange

IPC分类号： G02B6/42 ,  G02B6/00 ,  G02B6/26

CPC分类号： G01C19/722 ,  G02B6/4457

摘要： A sensing coil assembly and method for attaching a sensing coil to a support structure are provided for a fiber optic gyroscope. The method comprises affixing a preformed adhesive to a mating surface of a mounting structure, and coupling an inner surface of the sensing coil to the mating surface of the mounting structure via the preformed adhesive. The mating surface is substantially cylindrical or conical. The sensing coil assembly comprises a hub having a mating surface, an optical fiber coil having an inner surface encircling at least a portion of the mating surface, and a preformed adhesive pattern affixing the mating surface to the inner surface. The mating surface of the hub is substantially cylindrical or conical.

摘要翻译： 为光纤陀螺仪提供了用于将感测线圈附接到支撑结构的感测线圈组件和方法。 该方法包括将预成型的粘合剂固定到安装结构的配合表面上，并且通过预成型粘合剂将感测线圈的内表面与安装结构的配合表面相耦合。 配合表面基本上是圆柱形或圆锥形。 感测线圈组件包括具有匹配表面的轮毂，具有围绕配合表面的至少一部分的内表面的光纤线圈和将配合表面固定到内表面的预成型粘合剂图案。 轮毂的配合表面基本上是圆柱形或圆锥形。

公开(公告)号：US20070103691A1

公开(公告)日：2007-05-10

申请号：US11271994

申请日：2005-11-09

申请人： Thomas Greening ,  Charles Lange ,  Chung-Jen Chen

发明人： Thomas Greening ,  Charles Lange ,  Chung-Jen Chen

IPC分类号： G01C19/72 ,  G01C19/66

CPC分类号： G01C19/721

摘要： A clock system for a fiber optic gyroscope is provided that includes a highly-tunable clock for the bias modulation and a separate asynchronous high-speed clock for the photodetector sampling. By separating the two clocks rather than using two derivatives of the same clock, the clock system and method can provide both the tunability objective of the bias modulation clock and the high-speed objective of the sampling clock, while using readily available, lower performance, radiation-hardened electronics parts.

摘要翻译： 提供了一种用于光纤陀螺仪的时钟系统，其包括用于偏置调制的高可调谐时钟和用于光电检测器采样的单独的异步高速时钟。 通过分离两个时钟而不是使用相同时钟的两个导数，时钟系统和方法可以提供偏置调制时钟的可调性目标和采样时钟的高速目标，同时使用容易获得的较低性能， 辐射硬化电子部件。

公开(公告)号：US20060222304A1

公开(公告)日：2006-10-05

申请号：US11095130

申请日：2005-03-30

申请人： Matthew Olson ,  Charles Lange ,  Esten Heringer

发明人： Matthew Olson ,  Charles Lange ,  Esten Heringer

IPC分类号： G02B6/04 ,  G02B6/00

CPC分类号： G02B6/4428 ,  G02B6/4248 ,  G02B6/4444 ,  H02G15/013

摘要： Methods and apparatus are provided for a seal assembly that includes a first plate, a second plate, and compliant material. The first and second plates each have a first side, a second side, and a channel extending therebetween. The channel includes a first cross-sectional area proximate the first side and a second cross-sectional area that is proximate the second side. The first cross-sectional area is greater than a second cross-sectional area. The compliant material is disposed between the first and second plates and is at least partially within the first plate channel and the second plate channel.

摘要翻译： 为包括第一板，第二板和柔性材料的密封组件提供了方法和装置。 第一和第二板各自具有第一侧，第二侧和在其间延伸的通道。 通道包括靠近第一侧的第一横截面区域和靠近第二侧面的第二横截面区域。 第一横截面积大于第二横截面面积。 顺应性材料设置在第一和第二板之间，并且至少部分地在第一板通道和第二板通道内。