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    Increased capacity optical waveguide
    42.
    发明授权
    Increased capacity optical waveguide 失效
    增加容量的光波导

    公开(公告)号：US5483612A

    公开(公告)日：1996-01-09

    申请号：US323795

    申请日：1994-10-17

    Applicant: Daniel Gallagher ,  Daniel A. Nolan ,  David K. Smith ,  J. Richard Toler ,  Grant P. Watkins

    Inventor： Daniel Gallagher ,  Daniel A. Nolan ,  David K. Smith ,  J. Richard Toler ,  Grant P. Watkins

    IPC: G02B6/028 ,  G02B6/036 ,  G02B6/44 ,  H04B10/12 ,  H04B10/13 ,  H04B10/135 ,  H04B10/14 ,  G02B6/22

    CPC classification number: G02B6/03644 ,  G02B6/02009 ,  G02B6/02238 ,  G02B6/02257 ,  G02B6/02285 ,  G02B6/02395 ,  G02B6/0286 ,  G02B6/03633 ,  G02B6/03688 ,  G02B6/03611

    Abstract: An compound core optical waveguide fiber designed for high data rate or single channel or WDM systems which may include optical amplifiers. The waveguide is characterized by a core having two or three regions wherein the refractive index can be varied. The relative size of the regions may also be varied. By adjusting these variables, the desired mode field diameter, zero dispersion wavelength, dispersion slope and cut off wavelength were obtained. The optical properties are chosen to limit non-linear effects while maintaining low attenuation and acceptable bend performance. In addition, the residual stress within the waveguide is maintained at a low level to limit stress induced birefringence. The low residual stress in the uncoated waveguide, together with a dual coating system having selected moduli and glass transition temperatures results in low polarization mode dispersion.

    Abstract translation: 专为高数据速率或单通道或WDM系统设计的复合核心光波导光纤，其可以包括光放大器。 波导的特征在于具有两个或三个区域的芯，其中折射率可以变化。 区域的相对尺寸也可以变化。 通过调整这些变量，获得所需的模场直径，零色散波长，色散斜率和截止波长。 选择光学性质以限制非线性效应，同时保持低衰减和可接受的弯曲性能。 此外，波导内的残余应力保持在低水平，以限制应力引起的双折射。 未涂布波导中的低残余应力以及具有选择的模量和玻璃化转变温度的双涂层系统导致低偏振模色散。

    Method of making low loss fiber optic coupler
    43.
    发明授权
    Method of making low loss fiber optic coupler 失效
    制造低损耗光纤耦合器的方法

    公开(公告)号：US4799949A

    公开(公告)日：1989-01-24

    申请号：US765652

    申请日：1985-08-15

    Applicant: Donald B. Keck ,  Donald R. Lyons ,  Daniel A. Nolan

    Inventor： Donald B. Keck ,  Donald R. Lyons ,  Daniel A. Nolan

    IPC: G02B6/00 ,  C03B23/047 ,  C03B37/012 ,  C03B37/014 ,  C03B37/025 ,  C03B37/028 ,  C03B37/16 ,  G02B6/02 ,  G02B6/024 ,  G02B6/26 ,  G02B6/28 ,  C03B37/027 ,  C03B37/018 ,  C03B37/02

    CPC classification number: G02B6/2817 ,  C03B23/0473 ,  C03B37/01205 ,  C03B37/014 ,  C03B37/01466 ,  C03B37/028 ,  G02B6/2808 ,  G02B6/2835 ,  G02B6/2843 ,  C03B2203/02 ,  C03B2203/30 ,  C03B2203/34

    Abstract: A low loss fiber optic coupler is fabricated by forming a coupler preform having a plurality of spaced glass cores extending longitudinally through a matrix of glass having a refractive index lower than that of the cores. The preform is heated and stretched to form a glass rod which is then severed into a plurality of units. Heat is applied to the central region of each unit while the ends of the unit are pulled apart to elongate and taper inwardly the heated central region, whereby the cores of the unit are more closely spaced and are of smaller diameter at the central region than they are at the ends of the unit. The unit is then provided with a plurality of optical fibers, one of which extends from each of the cores at the endfaces of the unit. A preferred method of providing the optical fibers involves forming the coupler preform of a matrix glass that is easily dissolved in a solvent. Each of the fiber cores within the matrix is surrounded by a layer of cladding glass that is relatively resistant to dissolving by the solvent. When an end of the unit is immersed in the solvent, the matrix glass dissolves, thereby leaving the unit cores and surrounding solvent-resistant cladding glass protruding from the newly formed endface of the unit.

    Abstract translation: 通过形成具有多个间隔开的玻璃核心的耦合器预制件来制造低损耗光纤耦合器，该玻璃核心纵向延伸穿过折射率低于芯子的折射率的玻璃矩阵。 将预成型件加热并拉伸以形成玻璃棒，然后将其切断成多个单元。 热量被施加到每个单元的中心区域，同时单元的端部被拉开以在加热的中心区域内向内伸长和渐缩，由此该单元的芯更紧密地间隔并且在中心区域具有比它们更小的直径 在单位的末端。 然后，该单元设置有多个光纤，其中一个光纤在单元的端面处从每个芯延伸。 提供光纤的优选方法包括形成易于溶解在溶剂中的基质玻璃的成色剂预成型体。 基体内的每个纤维芯都被一层比较耐溶解溶解的包层玻璃包围。 当单元的一端浸入溶剂中时，基体玻璃溶解，从而使单元芯和周围的耐溶剂包层玻璃从单元的新形成的端面突出。

    Electrically insulating body
    44.
    发明授权
    Electrically insulating body 失效
    电绝缘体

    公开(公告)号：US4699831A

    公开(公告)日：1987-10-13

    申请号：US747452

    申请日：1985-06-21

    Applicant: Michael J. Hartmann ,  Kuang-hsin K. Lo ,  Daniel A. Nolan

    Inventor： Michael J. Hartmann ,  Kuang-hsin K. Lo ,  Daniel A. Nolan

    IPC: C03C14/00 ,  H01L23/15 ,  H01L31/024 ,  H01L33/64 ,  C03C3/089

    CPC classification number: H01L33/641 ,  C03C14/004 ,  H01L23/15 ,  H01L31/024 ,  C03C2214/04 ,  C03C2214/08 ,  H01L2924/15312 ,  Y10T428/131 ,  Y10T428/25 ,  Y10T428/256

    Abstract: There is disclosed a composite body that is electrically insulating, and that is composed of metal particles dispersed in a continuous glassy matrix as a second phase. The metal particles are directionally anisotropic generally paralleling a predetermined plane through the body. This permits good thermal conductivity, while retaining the electrical insulating character of the glass, thus providing improved packaging for electronic components. A method of forming the composite body is also disclosed, as are methods of creating improved electronic packaging utilizing the composite material body.

    Abstract translation: 公开了一种电绝缘的复合体，其由作为第二相分散在连续玻璃质基质中的金属粒子构成。 金属颗粒的方向性各向异性通常通过主体平行于预定平面。 这允许良好的导热性，同时保持玻璃的电绝缘特性，从而为电子部件提供改进的包装。 还公开了形成复合体的方法，以及利用复合材料体制造改进的电子封装的方法。

    Highly non-linear single mode waveguide
    45.
    发明授权
    Highly non-linear single mode waveguide 有权
    高度非线性单模波导

    公开(公告)号：US06400879B1

    公开(公告)日：2002-06-04

    申请号：US09600111

    申请日：2000-07-07

    Applicant: Robert M. Hawk ,  Daniel A. Nolan ,  Steven H. Tarcza

    Inventor： Robert M. Hawk ,  Daniel A. Nolan ,  Steven H. Tarcza

    IPC: G02B602

    CPC classification number: G02B6/02238 ,  G02B6/02 ,  G02B6/02028 ,  G02B6/02242 ,  G02B6/0281 ,  H04B10/25 ,  H04B10/2525

    Abstract: Disclosed is a single mode optical waveguide fiber having a core region refractive index profile designed to provide a highly non-linear refractive index. The core index profile of the highly non-linear waveguide is an &agr;-profile which has pre-selected values of relative refractive-index and core diameter so as to retain the advantageous optical waveguide properties of low attenuation, properly placed zero dispersion and cut off wavelengths, low, positive total dispersion over a pre-selected wavelength range, and low dispersion slope.

    Abstract translation: 公开了具有设计成提供高度非线性折射率的芯区折射率分布的单模光波导光纤。 高度非线性波导的核心折射率分布是具有相对折射率和芯直径的预选值的α轮廓，以便保持低衰减，适当放置的零色散和切断的有利的光波导特性 在预选波长范围内的波长，低，正的总色散以及低色散斜率。

    Sensor apparatus with polarization maintaining fibers
    46.
    发明授权
    Sensor apparatus with polarization maintaining fibers 有权
    带有偏振维持光纤的传感器设备

    公开(公告)号：US06211962B1

    公开(公告)日：2001-04-03

    申请号：US09284371

    申请日：1999-04-14

    Applicant: Daniel A. Nolan

    Inventor： Daniel A. Nolan

    IPC: G01B902

    CPC classification number: G01M11/083 ,  G01D5/344 ,  G01D5/35383 ,  G01J4/00 ,  G01K11/32 ,  G02B6/105

    Abstract: A distributed sensor (10) includes a plurality of stages (24, 28, 32, 36, 40) connected in series, each stage incorporating a length of polarization maintaining fiber (12) exposed to a phenomena such as mechanical deformation or temperature to be sensed. Inter-mode couplers are provided between the sensing fibers (26, 30, 34, 38) of the various stages. The overall transfer function of the device at a plurality of wavelengths is deconvoluted to determine the birefringence of each sensing region and does monitor plural phenomena independently of one another.

    Abstract translation: 分布式传感器（10）包括串联连接的多个级（24,28,32,36,40），每级包括暴露于诸如机械变形或温度等现象的一段偏振保持光纤（12） 感觉到。 在各级的感测光纤（26,30,34,38）之间提供了模式间耦合器。 在多个波长处的器件的整体传递函数被去卷积以确定每个感测区域的双折射，并且彼此独立地监视多个现象。

    Interferometric switch
    49.
    发明授权
    Interferometric switch 失效
    干涉式开关

    公开(公告)号：US5703975A

    公开(公告)日：1997-12-30

    申请号：US672188

    申请日：1996-06-27

    Applicant: William J. Miller ,  Daniel A. Nolan

    Inventor： William J. Miller ,  Daniel A. Nolan

    IPC: G02B6/122 ,  G02B6/12 ,  G02B6/26 ,  G02B6/28 ,  G02B6/287 ,  G02B6/34 ,  G02F1/313 ,  G02F1/35 ,  G02F1/365

    CPC classification number: G02F1/3517 ,  G02F1/3136 ,  G02B2006/12145 ,  G02B6/2835 ,  G02B6/29352 ,  G02F1/3131

    Abstract: A compact monolithic interferometric switch such as a Mach-Zehnder switch is formed such that one of the waveguide paths between the input and output couplers contains a material having exhibits a resonant nonlinearity, whereby its refractive index changes when pump power propagates through it. Each of the waveguide paths has a different propagation constant whereby signal light is subjected to a different delay in each path when no pump power is propagating through the rare nonlinear path. An input signal applied to the input of the switch appears at a first output terminal when the pump power does not propagate through the nonlinear path, and it appears at a second output terminal when the pump power is applied to the nonlinear path. Switching occurs at relatively low levels of pump power.

    Abstract translation: 形成诸如Mach-Zehnder开关的紧凑型单片干涉式开关，使得输入和输出耦合器之间的一条波导路径包含具有共振非线性的材料，由此当泵浦功率传播通过其时，其折射率改变。 每个波导路径具有不同的传播常数，由此当没有泵功率传播通过罕见的非线性路径时，信号光在每个路径中经受不同的延迟。 当泵浦功率不通过非线性路径时，施加到开关输入端的输入信号出现在第一输出端子处，并且当泵浦功率被施加到非线性路径时，其出现在第二输出端子处。 切换发生在泵功率相对较低的水平。

    Non-adiabatically-tapered connector
    50.
    发明授权
    Non-adiabatically-tapered connector 失效
    非绝热锥形连接器

    公开(公告)号：US4877300A

    公开(公告)日：1989-10-31

    申请号：US261270

    申请日：1988-10-24

    Applicant: Mark A. Newhouse ,  Daniel A. Nolan ,  David L. Weidman

    Inventor： Mark A. Newhouse ,  Daniel A. Nolan ,  David L. Weidman

    IPC: G02B6/14 ,  G02B6/26 ,  G02B6/42

    CPC classification number: G02B6/4202 ,  G02B6/262

    Abstract: Disclosed is a mode field modifier which can be used in a fiber-to-fiber connector or a source-to-fiber connector. In a downtaper-type mode field modifier embodiment, the modifier comprises a modifier core of refractive index n.sub.1 surrounded by first and second cladding layers having refractive indices n.sub.2 and n.sub.3, respectively. In an uptaper-type mode field modifier embodiment, the modifier comprises a modifier core of refractive index n.sub.1 surrounded by a cladding layer having a refractive index n.sub.2. The refractive indices are such that n.sub.1 >n.sub.2 >n.sub.3. In both embodiments, there is a nonadiabatic taper intermediate the ends of the mode field modifier, whereby a substantial amount of mode coupling occurs therein.

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