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    Compression-tuned grating-based optical add/drop multiplexer
    6.
    发明授权
    Compression-tuned grating-based optical add/drop multiplexer 有权
    压缩调谐光栅光分插复用器

    公开(公告)号：US06633695B2

    公开(公告)日：2003-10-14

    申请号：US09800918

    申请日：2001-03-06

    申请人： Timothy J. Bailey ,  Mark R. Fernald ,  Alan D. Kersey ,  Trevor W. MacDougall ,  Martin A. Putnam ,  Paul E. Sanders

    发明人： Timothy J. Bailey ,  Mark R. Fernald ,  Alan D. Kersey ,  Trevor W. MacDougall ,  Martin A. Putnam ,  Paul E. Sanders

    IPC分类号： G02B628

    CPC分类号： G02B6/2932 ,  G02B6/022 ,  G02B6/29322 ,  G02B6/29383 ,  G02B6/29395 ,  G02B6/29398 ,  H04J14/021

    摘要： A compression-tuned fiber Bragg grating based reconfigurable wavelength add/drop module has a compression force assembly and an all-glass Bragg grating compression unit having gratings spaced along an axis of compression. The compression force assembly responds to a control electronics signal containing information about a selected wavelength of a channel to be added to or dropped from an optical traffic signal, for providing a compression force applied along the axis of compression. The compression unit responds to the optical traffic signal and the compression force, for providing an all-glass Bragg grating compression unit optical signal having the selected wavelength of the channel to be added to or dropped from the optical traffic signal. The compression unit optical signal may include either the traffic with an added reflected channel(s), or a dropped reflected channel(s). The compression unit is a “dogbone” structure having either a glass tube with an optical fiber fused therein, or a single large diameter waveguide having a core. The core of the optical fiber or waveguide has the gratings spaced therein. The axis of compression is parallel with the longitudinal axis of the dogbone structure.

    摘要翻译： 基于压缩调谐光纤布拉格光栅的可重构波长加/减模块具有压缩组件和全玻璃布拉格光栅压缩单元，其具有沿压缩轴间隔开的光栅。 压缩力组件响应于控制电子信号，该控制电子信号包含关于要添加到或从光学交通信号中掉落的信道的选定波长的信息，以提供沿着压缩轴施加的压缩力。 压缩单元响应于光学交通信号和压缩力，用于提供具有要被添加到或从光学交通信号中掉落的信道的所选波长的全玻璃布拉格光栅压缩单元光信号。 压缩单元光信号可以包括具有附加反射信道的业务或者丢弃的反射信道。 压缩单元是具有熔合在其中的光纤的玻璃管或具有芯的单个大直径波导的“狗骨”结构。 光纤或波导的核心具有间隔开的光栅。 压缩轴线与狗骨架结构的纵向轴线平行

    Method for restoring or increasing photosensitivity in hydrogen or deuterium loaded large diameter optical waveguide
    8.
    发明授权
    Method for restoring or increasing photosensitivity in hydrogen or deuterium loaded large diameter optical waveguide 有权
    在氢或氘负载的大直径光波导中恢复或增加光敏性的方法

    公开(公告)号：US07068897B2

    公开(公告)日：2006-06-27

    申请号：US10459653

    申请日：2003-06-10

    申请人： Jerin J. Russell ,  Martin A. Putnam ,  Jay W. Dawson ,  Trevor W. MacDougall ,  John R. Troll

    发明人： Jerin J. Russell ,  Martin A. Putnam ,  Jay W. Dawson ,  Trevor W. MacDougall ,  John R. Troll

    IPC分类号： G02B6/02

    CPC分类号： G02B6/02133 ,  G02B5/1857 ,  G02B6/02114 ,  G02B6/02123

    摘要： The present invention provides a new and unique method for increasing the photosensitivity of a large diameter optical waveguide having a cross-section of at least about 0.3 millimeters. The method features loading the large diameter optical waveguide with a photosensitizing gas at a pressure at least about 4000 pounds per square inch (PSI) at a temperature of at least about 250E Celsius. The photosensitizing gas may be hydrogen, Deuterium or other suitable gas. The method also includes the step of using a particular large diameter optical waveguide having a diameter of greater than 0.9 millimeters. The method may be used as part of a process for writing a Bragg grating in an inner core or a cladding of the large diameter optical waveguide.

    摘要翻译： 本发明提供了一种增加具有至少约0.3毫米横截面的大直径光波导的光敏性的新颖且独特的方法。 该方法特征是在至少约250摄氏度的温度下，在至少约4000磅/平方英寸（PSI）的压力下加载具有光敏气体的大直径光波导。 光敏气体可以是氢气，氘气或其它合适的气体。 该方法还包括使用直径大于0.9毫米的特定大直径光波导的步骤。 该方法可以用作在大直径光波导的内芯或包层中写入布拉格光栅的过程的一部分。

    Verdet constant temperature-compensated current sensor
    9.
    发明授权
    Verdet constant temperature-compensated current sensor 失效
    Verdet恒温补偿电流传感器

    公开(公告)号：US5780847A

    公开(公告)日：1998-07-14

    申请号：US822894

    申请日：1997-03-24

    申请人： Jay W. Dawson ,  Trevor W. MacDougall

    发明人： Jay W. Dawson ,  Trevor W. MacDougall

    IPC分类号： G01R15/24 ,  G01R19/00 ,  G02F1/05 ,  G01R15/00 ,  G02F1/09

    CPC分类号： G01R15/246

    摘要： A fiber optic, Faraday-effect current sensor (optical current transducer) which has improved temperature sensitivity due to compensation for temperature-induced variations of the Verdet constant. Fiber optic sensing coils can exhibit shifts in their bias angle due to a number of reasons, including physical rotation of the fibers, an apparent circular birefringence attributable to the sensing coil shape (Berry's phase), circular birefringence in the sensing fiber, or a DC magnetic field or current. The present invention takes advantage of the change in bias angle by identifying a preferred channel from the two sensing axes of the output fiber, based on the manner in which these axes respond to the change in bias angle. One of the axes will exhibit a change in sensitivity that exacerbates the change in sensitivity due to the Verdet constant, while the other channel will exhibit a change that complements, or compensates for, the change in sensitivity due to the Verdet constant. Once the preferred channel is identified, a polarizing fiber is attached to the output of the sensing coil, aligned to transmit the preferred channel to the optical detector.

    摘要翻译： 一种光纤，法拉第效应电流传感器（光电流传感器），由于对温度引起的Verdet常数的变化的补偿而具有改善的温度灵敏度。 由于许多原因，光纤感测线圈可能会出现偏移角偏移，包括纤维的物理旋转，归因于感测线圈形状（Berry's phase）的表观圆形双折射，感测光纤中的圆形双折射或DC 磁场或电流。 本发明通过基于这些轴对偏置角的改变的方式来识别来自输出光纤的两个感测轴的优选通道来利用偏置角的变化。 其中一个轴会出现灵敏度的变化，这会加剧由于Verdet常数导致的灵敏度变化，而另一个通道会出现由于Verdet常数而导致的灵敏度变化的补偿或补偿。 一旦识别出优选的通道，偏振光纤被附着到感测线圈的输出端，对准以将优选的通道传送到光学检测器。

    Alignment and imaging system for writing Bragg gratings
    10.
    发明授权
    Alignment and imaging system for writing Bragg gratings 有权
    用于写入布拉格光栅的对准和成像系统

    公开(公告)号：US06947640B2

    公开(公告)日：2005-09-20

    申请号：US10459687

    申请日：2003-06-10

    申请人： Jerin J. Russell ,  John R. Troll ,  Joseph F. Pinto ,  Freddie Falero, Jr. ,  Minfu Lu ,  Trevor W. MacDougall ,  Francesco Birritta ,  Duane J. Rodriguez

    发明人： Jerin J. Russell ,  John R. Troll ,  Joseph F. Pinto ,  Freddie Falero, Jr. ,  Minfu Lu ,  Trevor W. MacDougall ,  Francesco Birritta ,  Duane J. Rodriguez

    IPC分类号： G02B5/18 ,  G02B6/02 ,  G02B6/34 ,  H01L21/00

    CPC分类号： G02B6/02133 ,  G02B5/1857 ,  G02B6/02114 ,  G02B6/02123

    摘要： A method is provided for precise and repeatable location of one or more Bragg gratings in a large diameter optical waveguide having a cross-section of at least about 0.3 millimeters, featuring the steps of: defining a reference location on a fixed placement datum arranged on a waveguide fixture device; defining one or more desired locations on a large diameter optical waveguide arranged on the waveguide fixture location in relation to the reference location; and writing one or more Bragg gratings in the large diameter optical waveguide at the one or more desired locations based on the reference location on the fixed placement datum. The step of defining the reference location may include marking the fixed placement datum with a scribe mark thereon; and securing the fixed placement datum in a groove in a waveguide fixture device.

    摘要翻译： 提供了一种用于在具有至少约0.3毫米的横截面的大直径光波导中的一个或多个布拉格光栅的精确和可重复定位的方法，其特征在于以下步骤：在布置在 波导夹具装置; 在相对于参考位置布置在波导夹具位置上的大直径光波导上限定一个或多个所需位置; 并且基于固定放置数据上的参考位置，在一个或多个期望位置处在大直径光波导中写入一个或多个布拉格光栅。 定义参考位置的步骤可以包括在其上标记具有划痕的固定位置数据; 并将固定的布置基准固定在波导固定装置的槽中。