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    Optical waveguide fiber for local access
    2.
    发明授权
    Optical waveguide fiber for local access 失效

    公开(公告)号：US07043125B2

    公开(公告)日：2006-05-09

    申请号：US10145327

    申请日：2002-05-13

    Applicant: Phong Diep ,  James C. Fajardo ,  Ming-Jun Li ,  Daniel A. Nolan ,  Gang Qi

    Inventor： Phong Diep ,  James C. Fajardo ,  Ming-Jun Li ,  Daniel A. Nolan ,  Gang Qi

    IPC: G02B6/02

    CPC classification number: G02B6/03666 ,  G02B6/02014 ,  G02B6/02223 ,  G02B6/02266 ,  G02B6/0281 ,  G02B6/03611 ,  G02B6/03627 ,  H04B10/25

    Abstract: Disclosed is a single mode optical waveguide fiber having a low cut off wavelength, and mode field diameter and bend resistance similar to step index single mode optical waveguide fiber designed for use at 1310 nm. By including a clad region of raised refractive index spaced apart from the core region of the single mode optical waveguide fiber, the cut off wavelength can be reduced to 850 nm. The single mode optical waveguide fiber in accord with the invention may also have a core region having a reduced refractive index on centerline surrounded by a region of higher refractive index and a clad region which is substantially uniform. The single mode optical waveguide fiber is thus ideally suited for use with the low cost, reliable VCSEL operating at 850 nm, a Fabry-Perot laser operating at 1310 nm, or a distributed feedback laser operating at 1550 nm thereby enabling low cost, easily installed, home access portions of the broadband telecommunications system.

    N-port reconfigurable DWDM multiplexer and demultiplexer
    3.
    发明授权
    N-port reconfigurable DWDM multiplexer and demultiplexer 失效
    N端口可重配置DWDM复用器和解复用器

    公开(公告)号：US6137927A

    公开(公告)日：2000-10-24

    申请号：US216435

    申请日：1998-12-18

    Applicant: Donald B. Keck ,  Daniel A. Nolan

    Inventor： Donald B. Keck ,  Daniel A. Nolan

    IPC: G02B6/12 ,  G02B6/293 ,  G02B6/34 ,  G02F1/01 ,  H04J14/02

    CPC classification number: G02B6/12011 ,  G02B6/12007 ,  G02B6/2935 ,  G02B6/29395 ,  H04J14/02 ,  G02B6/29358

    Abstract: An N-port optical wavelength division multiplexer and demultiplexer includes two evanescent wave couplers connected by N optical paths. Each of the optical paths includes wavelength-selecting elements that are used to select specific wavelengths of light. Light signals composed of N wavelengths of light introduced to an exterior port in one of the couplers are split substantially equally among all the optical paths within the coupler, so that each optical path exiting the coupler includes light of all the wavelengths initially introduced to the coupler. The wavelength selecting elements disposed on each optical path are situated to direct the light in a manner such that light of only the selected wavelengths interferes constructively at a given exterior coupler port and other wavelengths interfere destructively. Consequently, optical signals composed of N wavelengths may be demultiplexed such that N optical paths carry light having one wavelength. Conversely, N optical paths carrying light signals having only one wavelength can be multiplexed into a signal having wavelengths .lambda..sub.1, .lambda..sub.2, . . . .lambda..sub.N. The multiplexed signal is then coupled into up to M+O exterior ports.

    Abstract translation: N端口光波分复用器和解复用器包括由N个光路连接的两个瞬逝波耦合器。 每个光路包括用于选择特定波长的光的波长选择元件。 在耦合器之一中引入到外部端口的N个波长的光构成的光信号在耦合器内的所有光路中基本上相等地分开，使得离开耦合器的每个光路包括最初引入耦合器的所有波长的光 。 设置在每个光路上的波长选择元件被定位成以使得所选择的波长的光在给定的外部耦合器端口上建设性地干扰并且其它波长相消干涉的方式来引导光。 因此，由N个波长组成的光信号可以被解复用，使得N个光路携带具有一个波长的光。 相反，携带仅具有一个波长的光信号的N个光路可以被复用到具有波长λ1，λ2的信号中。 。 。 然后将复用的信号耦合到多达M + O外部端口。

    Wheelchair voice control apparatus
    4.
    发明授权
    Wheelchair voice control apparatus 失效
    轮椅语音控制装置

    公开(公告)号：US5812978A

    公开(公告)日：1998-09-22

    申请号：US762804

    申请日：1996-12-09

    Applicant: Daniel A. Nolan

    Inventor： Daniel A. Nolan

    IPC: A61G5/04 ,  G10L15/22 ,  G10L15/26 ,  G01L3/00

    CPC classification number: A61G5/045 ,  G10L15/26 ,  A61G2203/14 ,  A61G2203/18

    Abstract: A voice-controlled wheelchair has a control system having a plurality of modes of operation in each of which only a limited number of commands for moving the wheelchair are executed. The commands are entered by a throat-engaging microphone, and backup commands are also recognized, including a command based on an excited utterance to stop the wheelchair. The control system is switchable by voice command between a first condition in which it executes other commands and a second condition in which it does not execute other commands.

    Abstract translation: 语音控制轮椅具有控制系统，其具有多个操作模式，每个操作模式仅执行有限数量的用于移动轮椅的命令。 命令由喉咙的麦克风输入，并且还可以识别备份命令，包括基于激动的话语来停止轮椅的命令。 控制系统可以在执行其他命令的第一状态和不执行其他命令的第二状态之间通过语音命令切换。

    Braking system for an in-line skate
    5.
    发明授权
    Braking system for an in-line skate 失效
    用于直排滑冰的制动系统

    公开(公告)号：US5755450A

    公开(公告)日：1998-05-26

    申请号：US733813

    申请日：1996-10-18

    Applicant: Todd D. Ellis ,  David J. Lacorazza ,  Daniel A. Nolan ,  Lennart B. Johnson

    Inventor： Todd D. Ellis ,  David J. Lacorazza ,  Daniel A. Nolan ,  Lennart B. Johnson

    IPC: A63C17/14

    CPC classification number: A63C17/1409

    Abstract: A braking system for an in-line skate. The skate includes a boot mounted on a chassis. A cuff is rotatably mounted on the chassis. The chassis has a plurality of wheels rotatably mounted thereon. The braking system for the skate includes a brake pad housing which is either fixedly or pivotally attached to a rear portion of the cuff, a brake pad disposed in the housing, and a roller arm rotatably mounted on the chassis. The roller arm is spring loaded so that when the brake is not in use, the roller arm is disposed above the wheels. The roller arm has a bearing assembly disposed therein, so that when the brake is actuated by a rearward rotation of the cuff, the brake pad engages the bearing assembly of the roller arm, thereby causing said bearing assembly to engage said at least one of the wheels to slow and/or stop the skate.

    Abstract translation: 用于直排轮滑的制动系统。 滑板包括一个安装在底盘上的靴子。 袖带可旋转地安装在底盘上。 底盘具有可旋转地安装在其上的多个车轮。 用于溜冰鞋的制动系统包括固定地或可枢转地附接到袖带的后部的制动衬块壳体，设置在壳体中的制动衬块和可旋转地安装在底盘上的辊臂。 辊臂是弹簧加载的，使得当制动器不使用时，辊臂设置在车轮上方。 辊臂具有设置在其中的轴承组件，使得当制动器通过套筒的向后旋转致动时，制动衬块与辊臂的轴承组件接合，从而使所述轴承组件接合所述至少一个 车轮减慢和/或停止滑冰。

    Optical fiber for soliton transmission and method of making
    7.
    发明授权
    Optical fiber for soliton transmission and method of making 失效
    用于孤子传输的光纤和制造方法

    公开(公告)号：US5504829A

    公开(公告)日：1996-04-02

    申请号：US172937

    申请日：1993-12-27

    Applicant: Alan F. Evans ,  Daniel A. Nolan

    Inventor： Alan F. Evans ,  Daniel A. Nolan

    IPC: G02B6/00 ,  C03B37/014 ,  C03B37/018 ,  G02B6/02 ,  G02B6/028 ,  G02B6/036 ,  G02B6/10

    CPC classification number: G02B6/0286 ,  C03B37/01413 ,  C03B37/01493 ,  C03B37/018 ,  C03B37/01807 ,  G02B6/02247 ,  G02B6/03633 ,  G02B6/03644 ,  G02B6/03688 ,  C03B2203/02 ,  C03B2203/06 ,  C03B2203/18 ,  C03B2203/24 ,  C03B2203/36

    Abstract: A single-mode optical fiber suitable for the transmission of solitons has a refractive index profile that changes along the length of the fiber to provide a fiber dispersion that monotonically decreases along the fiber from one end thereof to the other. The fiber includes a core of maximum refractive index n.sub.1 and a radius a, surrounded by cladding material having a refractive index n.sub.2 which is less than n.sub.1. The fiber core includes a central region that extends to the longitudinal axis of the fiber and an outer region, the inner and outer regions being separated by a region of depressed refractive index. The inner radius a.sub.1 of the region of depressed refractive index is greater than zero and the maximum radius a.sub.o of the region of depressed refractive index is less than a. The fiber preform can be made by depositing layers of glass particles on an elongated mandrel, the composition of glass particles being varied with respect to longitudinal position along the preform during the deposition of some of the layers.

    Abstract translation: 适于透射孤子的单模光纤具有沿纤维长度变化的折射率分布，以提供沿纤维从其一端到另一端单调减小的纤维分散体。 光纤包括最大折射率n1的核心和半径a，由具有小于n1的折射率n2的包层材料包围。 纤维芯包括延伸到纤维的纵向轴线的中心区域和外部区域，内部和外部区域被折射率低的区域分开。 折射率低的区域的内半径a1大于零，折射率低的区域的最大半径ao小于a。 纤维预成型件可以通过在细长心轴上沉积玻璃颗粒层而制成，玻璃颗粒的组成在沉积一些层期间相对于沿着预成型件的纵向位置而变化。

    Optical waveguide fiber achromatic coupler
    8.
    发明授权
    Optical waveguide fiber achromatic coupler 失效
    光纤光纤消色耦合器

    公开(公告)号：US5295210A

    公开(公告)日：1994-03-15

    申请号：US999296

    申请日：1992-12-31

    Applicant: Daniel A. Nolan ,  David L. Weidman

    Inventor： Daniel A. Nolan ,  David L. Weidman

    IPC: G02B6/28 ,  G02B6/26

    CPC classification number: G02B6/2835 ,  G02B6/2856

    Abstract: An achromatic fiber optic coupler of the type wherein three single-mode optical fibers are fused together along a portion of the lengths thereof to form a coupling region. Each fiber includes a core and a cladding, the lowest refractive index of the fiber claddings being n.sub.2. The fibers are disposed in a triangular array in the coupling region. A matrix glass body of refractive index n.sub.3 surrounds the coupling region, n.sub.3 being lower than n.sub.2 by such an amount that the value of .DELTA..sub.2-3 is less than 0.125%, wherein .DELTA..sub.2-3 equals (n.sub.2.sup.2' -n.sub.3.sup.2)/2n.sub.2.sup.2.

    Abstract translation: 这种类型的消色差光纤耦合器，其中三个单模光纤沿其长度的一部分熔合在一起以形成耦合区域。 每个光纤包括芯和包层，光纤包层的最低折射率为n2。 纤维在耦合区域中以三角形阵列布置。 折射率为n3的矩阵玻璃体围绕耦合区域，n3低于n2，使得（Delta）2-3的值小于0.125％，其中（Delta）2-3等于（n22'- n32）/ 2n22。

    Infrared polarizing glasses
    9.
    发明授权
    Infrared polarizing glasses 失效
    红外偏光眼镜

    公开(公告)号：US4479819A

    公开(公告)日：1984-10-30

    申请号：US427732

    申请日：1982-09-29

    Applicant: Nicholas F. Borelli ,  Frank Coppola ,  David L. Morse ,  Daniel A. Nolan ,  Thomas P. Seward, III

    Inventor： Nicholas F. Borelli ,  Frank Coppola ,  David L. Morse ,  Daniel A. Nolan ,  Thomas P. Seward, III

    IPC: C03B17/02 ,  C03B23/037 ,  C03B32/00 ,  C03C3/064 ,  C03C3/091 ,  C03C4/06 ,  G02B5/30 ,  C03C3/26 ,  C03B19/00 ,  C03C23/00

    CPC classification number: C03B32/00 ,  C03B17/02 ,  C03B23/037 ,  C03C3/064 ,  C03C3/091 ,  C03C4/06 ,  G02B5/3058 ,  Y10S430/165

    Abstract: The instant invention is directed to the preparation of glass articles exhibiting excellent polarization in the infrared portion of the spectrum from glasses characterized as containing silver halide particles therein selected from the group of AgCl, AgBr, AgI. The inventive method comprises four general steps:(a) a batch for a glass containing silver and at least one halide selected from the group of chloride, bromide, and iodide is melted and the melt shaped into a glass body of a desired geometry;(b) the glass body is subjected to a heat treatment at least above the strain point but not in excess of 50.degree. C. above the softening point of the glass for a period of time adequate to cause the generation of AgCl and/or AgBr and/or AgI particles therein, said particles ranging in size between 200-5000 .ANG.;(c) the glass body is elongated under stress at temperatures above the annealing point, but below that where said glass exhibits a viscosity of about 10.sup.8 poises, such that the particles are elongated to an aspect ratio of at least 5:1; and(d) the elongated glass body is exposed to a reducing environment at temperatures between 250.degree. C. and about 25.degree. above the annealing point of the glass to reduce the silver halide particles in the glass to metallic silver which is deposited in and/or upon the elongated particles.

    Abstract translation: 本发明涉及从其中选择AgCl，AgBr，AgI中含有卤化银颗粒的玻璃的红外线部分的红外部分显示优异的玻璃制品的制备。 本发明的方法包括四个一般步骤：（a）用于含有银的玻璃和选自氯化物，溴化物和碘化物中的至少一种卤化物的批料熔化并将其熔化成具有所需几何形状的玻璃体; （b）将玻璃体至少高于应变点，但不超过玻璃软化点50℃以上的热处理足以导致产生AgCl和/或AgBr的时间 和/或AgI颗粒，所述颗粒的尺寸范围为200-5000安培; （c）玻璃体在高于退火点的温度下在应力下伸长，但低于所述玻璃呈现约108泊的粘度，使得该颗粒伸长至至少5:1的纵横比; 和（d）细长玻璃体在比玻璃退火点高250℃至25℃的温度下暴露于还原环境中，以将玻璃中的卤化银颗粒还原为金属银，其沉积在和/ 或在细长的颗粒上。

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