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    Sensor apparatus with polarization maintaining fibers
    11.
    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
    14.
    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
    15.
    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.

    Connector employing mode field modification
    16.
    发明授权
    Connector employing mode field modification 失效
    连接器采用模式字段修改

    公开(公告)号：US4763976A

    公开(公告)日：1988-08-16

    申请号：US52281

    申请日：1987-05-21

    Applicant: Daniel A. Nolan ,  Carlton M. Truesdale

    Inventor： Daniel A. Nolan ,  Carlton M. Truesdale

    IPC: G02B6/26 ,  G02B6/36 ,  G02B6/38 ,  G02B6/42

    CPC classification number: G02B6/3859 ,  G02B6/262 ,  G02B6/3855 ,  G02B6/4202

    Abstract: Disclosed is a mode field modifier for use with an optical fiber having a core and a cladding of outside diameter d. The modifier comprises a modifier core having a refractive index n.sub.1. Surrounding the modifier core is first cladding layer having a refractive index n.sub.2 that is less n.sub.1. On the surface of the first cladding layer is a second cladding layer having a refractive index n.sub.3 which is less than n.sub.2. The modifier is tapered intermediate its ends whereby it has a large diameter end and a small diameter end. The diameters of at least the core and first cladding layer at the large diameter end are greater than the corresponding diameters at the small end. The diameter D.sub.1 of the first cladding layer at the large diameter end is greater than d. An axially disposed hole in the large diameter end receives a fiber which is held in such alignment with the mode field modifier that it is in light coupling relationship with the modifier core. The mode field of a signal coupled from the fiber to the mode field modifier expands as it propagates though the tapered portion of the modifier to the small diameter end. An in-line coupler between two optical fibers is effected by connecting together in axial alignment two such mode field modifiers with their small diameter ends adjacent one another.

    Polarization-retaining single-mode optical waveguide
    17.
    发明授权
    Polarization-retaining single-mode optical waveguide 失效
    偏振保持单模光波导

    公开(公告)号：US4549781A

    公开(公告)日：1985-10-29

    申请号：US499898

    申请日：1983-06-01

    Applicant: Venkata A. Bhagavatula ,  Daniel A. Nolan

    Inventor： Venkata A. Bhagavatula ,  Daniel A. Nolan

    IPC: G02B6/024 ,  G02B6/10 ,  G02B5/172

    CPC classification number: G02B6/105 ,  C03B37/01205 ,  C03B37/01211 ,  C03B37/0124

    Abstract: Disclosed is an optical fiber for operating single polarization, single-mode at wavelength .lambda.. The fiber core is surrounded by cladding having the refractive index lower than the average refractive index of the core. The core is characterized in that it comprises a plurality of transparent laminae, each having a refractive index different from that of the adjacent laminae. The thickness of each laminae is equal to or less than wavelength .lambda..

    Abstract translation: 公开了用于在波长λ下单次振荡的单模光纤。 纤维芯由折射率低于芯的平均折射率的包层围绕。 该芯的特征在于它包括多个透明层，每个透明层具有与相邻层的折射率不同的折射率。 每个薄片的厚度等于或小于波长λ。

    Method for making polarizing glasses through extrusion
    18.
    发明授权
    Method for making polarizing glasses through extrusion 失效
    通过挤出制造偏光眼镜的方法

    公开(公告)号：US4282022A

    公开(公告)日：1981-08-04

    申请号：US144537

    申请日：1980-04-28

    Applicant: Kuang-Hsin K. Lo ,  Daniel A. Nolan

    Inventor： Kuang-Hsin K. Lo ,  Daniel A. Nolan

    IPC: C03B32/00 ,  C03B17/00 ,  C03B17/06 ,  C03C3/11 ,  C03C4/00 ,  C03C4/06 ,  G02B5/30 ,  C03C3/26

    CPC classification number: C03C4/06 ,  C03B17/06

    Abstract: The present invention relates to the preparation of polarizing glasses from silver-containing glasses characterized by the presence of metallic silver particles therein and/or by being photochromic through the inclusion of silver halide particles therein selected from the group of AgCl, AgBr, and AgI. The method contemplates extruding the glass at a temperature between the annealing and softening points of the glass at a sufficiently high applied pressure to elongate the metallic silver and/or silver halide particles to an aspect ratio of at least 2:1 and up to 30:1 and greater. The extrudate is cooled in a manner to prevent the elongated particles from resuming their original shape. Dichroic ratios of up to 5.0 are achievable where the elongated particles exhibit an oblate configuration.

    Abstract translation: 本发明涉及由含银玻璃制备偏光玻璃，其特征在于其中存在金属银颗粒和/或通过在其中选择AgCl，AgBr和AgI中包含其中的卤化银颗粒进行光致变色。 该方法考虑在足够高的施加压力下在玻璃的退火和软化点之间的温度下挤出玻璃以将金属银和/或卤化银颗粒细长至至少2:1至高达30:1的纵横比。 1及以上。 挤出物被冷却以防止细长颗粒恢复其原始形状。 可以实现高达5.0的二向色比，其中细长颗粒呈现扁圆形结构。

    Adjustable optical tap
    19.
    发明授权
    Adjustable optical tap 有权
    可调节光头

    公开(公告)号：US07627214B2

    公开(公告)日：2009-12-01

    申请号：US12069213

    申请日：2008-02-08

    Applicant: Mark E. Conner ,  David R. Kozischek ,  Frances D. Carter ,  Daniel A. Nolan ,  William J. Miller ,  William T. Sawyer

    Inventor： Mark E. Conner ,  David R. Kozischek ,  Frances D. Carter ,  Daniel A. Nolan ,  William J. Miller ,  William T. Sawyer

    IPC: G02B6/26

    CPC classification number: G02B6/4201 ,  G02B6/4287 ,  G02B6/4291

    Abstract: An adjustable optical tap for adjusting input power, output power and drop power in a communications network includes an enclosure having a plurality of connector assemblies being configured for interconnecting input and output cables; a cover attachable to the enclosure, the cover including a plurality of drop cable ports; and a tunable splitter disposed in the enclosure in communication with the input cable and the drop cable ports, the tunable splitter being configured for adjustment to affect attenuation in a broad wavelength band.

    Abstract translation: 用于调整通信网络中的输入功率，输出功率和下降功率的可调节光学抽头包括具有多个连接器组件的外壳，所述多个连接器组件被配置用于互连输入和输出电缆; 一个可附连到外壳上的盖子，该盖子包括多个分支电缆端口; 以及设置在所述外壳中的可调谐分离器，其与所述输入电缆和所述引入电缆端口连通，所述可调谐分离器被配置用于调整以影响宽波段中的衰减。

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