利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

81 条记录 (耗时 0.023 秒)

    Method and apparatus for controlling waveguide birefringence by selection of a waveguide core width for a top cladding
    3.
    发明申请
    Method and apparatus for controlling waveguide birefringence by selection of a waveguide core width for a top cladding 有权
    通过选择顶部包层的波导芯宽度来控制波导双折射的方法和装置

    公开(公告)号：US20080240655A1

    公开(公告)日：2008-10-02

    申请号：US12079930

    申请日：2008-03-28

    申请人： Farnaz Parhami ,  Liang Zhao ,  Fan Zhong

    发明人： Farnaz Parhami ,  Liang Zhao ,  Fan Zhong

    IPC分类号： G02B6/34 ,  G02B6/10

    CPC分类号： G02B6/12023 ,  G02B6/126

    摘要： A method and apparatus for controlling waveguide birefringence by selection of a waveguide core width for a tuned top clad is described herein. In one example, a dopant concentration within a top cladding material is between 3-6% (wt.). Given a tuned top cladding composition, a width of the waveguide core is pre-selected such that birefringence is minimized, i.e., a zero, or near zero. The desirable width of the waveguide core is determined by calculating the distribution of stress in the top cladding over a change in temperature. From this distribution of stress, a relationship between the polarization dependent wavelength and variable widths of the waveguide in the arrayed waveguide grating are determined. This relationship determines a zero value, or near zero value, of polarization dependent wavelength for a given range of waveguide widths. Accordingly, the width of the waveguide may be selected such that the polarization dependent wavelength is minimized.

    摘要翻译： 本文描述了通过选择用于调谐顶部包层的波导芯宽度来控制波导双折射的方法和装置。 在一个实例中，顶部包层材料内的掺杂剂浓度在3-6％（重量）之间。 给定一个调整的顶部包层组成，预先选择波导芯的宽度，使得双折射最小化，即零或接近零。 通过计算在顶部包层中的应力在温度变化中的分布来确定波导芯的期望宽度。 根据这种应力分布，确定阵列波导光栅中波导的偏振相关波长与可变宽度之间的关系。 对于给定的波导宽度范围，该关系确定偏振相关波长的零值或近零值。 因此，可以选择波导的宽度使得偏振相关波长最小化。

    Method and apparatus for controlling waveguide birefringence by selection of a waveguide core width for a top cladding
    4.
    发明授权
    Method and apparatus for controlling waveguide birefringence by selection of a waveguide core width for a top cladding 有权
    通过选择顶部包层的波导芯宽度来控制波导双折射的方法和装置

    公开(公告)号：US07609917B2

    公开(公告)日：2009-10-27

    申请号：US12079930

    申请日：2008-03-28

    申请人： Farnaz Parhami ,  Liang Zhao ,  Fan Zhong

    发明人： Farnaz Parhami ,  Liang Zhao ,  Fan Zhong

    IPC分类号： G02B6/12 ,  G02B6/10 ,  G02B6/34

    CPC分类号： G02B6/12023 ,  G02B6/126

    摘要： A method and apparatus for controlling waveguide birefringence by selection of a waveguide core width for a tuned top clad is described herein. In one example, a dopant concentration within a top cladding material is between 3-6% (wt.). Given a tuned top cladding composition, a width of the waveguide core is pre-selected such that birefringence is minimized, i.e., a zero, or near zero. The desirable width of the waveguide core is determined by calculating the distribution of stress in the top cladding over a change in temperature. From this distribution of stress, a relationship between the polarization dependent wavelength and variable widths of the waveguide in the arrayed waveguide grating are determined. This relationship determines a zero value, or near zero value, of polarization dependent wavelength for a given range of waveguide widths. Accordingly, the width of the waveguide may be selected such that the polarization dependent wavelength is minimized.

    摘要翻译： 本文描述了通过选择用于调谐顶部包层的波导芯宽度来控制波导双折射的方法和装置。 在一个实例中，顶部包层材料内的掺杂剂浓度在3-6％（重量）之间。 给定一个调整的顶部包层组成，预先选择波导芯的宽度，使得双折射最小化，即零或接近零。 通过计算在顶部包层中的应力在温度变化中的分布来确定波导芯的期望宽度。 根据这种应力分布，确定阵列波导光栅中波导的偏振相关波长与可变宽度之间的关系。 对于给定的波导宽度范围，该关系确定偏振相关波长的零值或近零值。 因此，可以选择波导的宽度使得偏振相关波长最小化。

    Method and apparatus for controlling waveguide birefringence by selection of a waveguide core width for a top clad
    5.
    发明授权
    Method and apparatus for controlling waveguide birefringence by selection of a waveguide core width for a top clad 有权
    通过选择顶部包层的波导芯宽度来控制波导双折射的方法和装置

    公开(公告)号：US06850670B2

    公开(公告)日：2005-02-01

    申请号：US09894049

    申请日：2001-06-28

    申请人： Farnaz Parhami ,  Liang Zhao ,  Fan Zhong

    发明人： Farnaz Parhami ,  Liang Zhao ,  Fan Zhong

    IPC分类号： G02B6/12 ,  G02B6/126 ,  G02B6/34

    CPC分类号： G02B6/126 ,  G02B2006/121

    摘要： A method and apparatus for controlling waveguide birefringence by selection of a waveguide core width for a tuned top clad is described herein. A tuned top cladding describes a pre-existing dopant concentration within a top cladding material. Given a tuned top cladding composition, a width of the waveguide core is pre-selected such that birefringence is minimized, i.e., a zero, or near zero. The desirable width of the waveguide core is determined by calculating the distribution of stress in the top cladding over a change in temperature. From this distribution of stress, a relationship between the polarization dependent wavelength and variable widths of the waveguide in the arrayed waveguide grating are determined. This relationship determines a zero value, or near zero value, of polarization dependent wavelength for a given range of waveguide widths. Accordingly, the width of the waveguide may be selected such that the polarization dependent wavelength is minimized.

    摘要翻译： 本文描述了通过选择用于调谐顶部包层的波导芯宽度来控制波导双折射的方法和装置。 调谐的顶部包层描述了顶部包层材料中预先存在的掺杂剂浓度。 给定一个调整的顶部包层组成，预先选择波导芯的宽度，使得双折射最小化，即零或接近零。 通过计算在顶部包层中的应力在温度变化中的分布来确定波导芯的期望宽度。 根据这种应力分布，确定阵列波导光栅中波导的偏振相关波长与可变宽度之间的关系。 对于给定的波导宽度范围，该关系确定偏振相关波长的零值或近零值。 因此，可以选择波导的宽度使得偏振相关波长最小化。

    Autonomous fluid control system having a fluid diode
    7.
    发明授权
    Autonomous fluid control system having a fluid diode 有权
    具有流体二极管的自主流体控制系统

    公开(公告)号：US09404349B2

    公开(公告)日：2016-08-02

    申请号：US13657371

    申请日：2012-10-22

    申请人： Liang Zhao

    发明人： Liang Zhao

    IPC分类号： E21B43/12 ,  E21B34/08

    CPC分类号： E21B43/12 ,  E21B34/08

    摘要： Apparatus and methods for autonomously controlling fluid flow in a subterranean well are presented, and in particular for providing a fluid diode to create a relatively high resistance to fluid flow in one direction and a relatively low resistance to fluid flowing in the opposite direction. The diode is positioned in a fluid passageway and has opposing high resistance and low resistance entries. In one embodiment, the high resistance entry has a concave, annular surface surrounding an orifice and the low resistance entry has a substantially conical surface. The concave, annular surface of the high resistance entry preferably extends longitudinally beyond the plane of the orifice. In a preferred embodiment, the fluid will flow in eddies adjacent the concave, annular surface.

    摘要翻译： 提出了用于自主控制地下井中的流体流动的装置和方法，特别是用于提供流体二极管以在一个方向上产生相对较高的流体流动阻力，并且相对于在相反方向上流动的流体阻力相对较低。 二极管位于流体通道中，具有相对的高电阻和低电阻条目。 在一个实施例中，高电阻入口具有围绕孔的凹形环形表面，并且低电阻入口具有基本上圆锥形的表面。 高阻力入口的凹形环形表面优选地纵向延伸超过孔口的平面。 在优选实施例中，流体将在靠近凹形环形表面的涡流中流动。

    METHOD AND APPARATUS FOR MEDIA PROPERTY OF CHARACTERISTIC CONTROL IN A MEDIA SYSTEM
    8.
    发明申请
    METHOD AND APPARATUS FOR MEDIA PROPERTY OF CHARACTERISTIC CONTROL IN A MEDIA SYSTEM 有权
    媒体系统特征控制媒体属性的方法与装置

    公开(公告)号：US20140162625A1

    公开(公告)日：2014-06-12

    申请号：US14232635

    申请日：2011-08-12

    申请人： Liang Zhao ,  Yu-Ling Fu ,  Qiu-Ling Li

    发明人： Liang Zhao ,  Yu-Ling Fu ,  Qiu-Ling Li

    IPC分类号： H04M1/725 ,  H04M1/60

    CPC分类号： H04M1/6066 ,  H04M1/7253 ,  H04N21/4122 ,  H04N21/4222 ,  H04N21/4852 ,  H04N21/8106

    摘要： A method and system for controlling multimedia presentation characteristics among a plurality of devices are disclosed. An electronic device (100) is capable of communication (109) with a peripheral device (102) to play back content (107) on the peripheral device (102). The content (107) has an associated a multimedia presentation characteristic signal, for example an audio signal (108). When the electronic device (101) receives a user input request to adjust a system volume, the device is configured to adjust either the associated audio signal or an output volume level of the peripheral device (102). Once this adjustment reaches a threshold, the device is configured to adjust the other of the associated audio signal or the output volume level of the peripheral device (102). The decision of which control to adjust first and which to adjust second can be user defined. The process can be repeated when more than two devices are included in the system.

    摘要翻译： 公开了一种用于控制多个设备中的多媒体呈现特性的方法和系统。 电子设备（100）能够与外围设备（102）进行通信（109）以播放外围设备（102）上的内容（107）。 内容（107）具有相关联的多媒体呈现特征信号，例如音频信号（108）。 当电子设备（101）接收到用于调整系统音量的用户输入请求时，该设备被配置为调整相关联的音频信号或外围设备（102）的输出音量级别。 一旦该调整达到阈值，该设备被配置为调整相关联的音频信号中的另一个或外围设备（102）的输出音量电平。 决定哪个控制首先调整，哪个调整第二个可以由用户定义。 当系统中包含两个以上的设备时，可以重复该过程。

    Reconfigurable LNA for increased jammer rejection
    9.
    发明授权
    Reconfigurable LNA for increased jammer rejection 有权
    可重配置的LNA可增加干扰抑制

    公开(公告)号：US08718587B2

    公开(公告)日：2014-05-06

    申请号：US13450120

    申请日：2012-04-18

    申请人： Cheng-Han Wang ,  Liang Zhao ,  Hong Sun Kim ,  Jin-Su Ko

    发明人： Cheng-Han Wang ,  Liang Zhao ,  Hong Sun Kim ,  Jin-Su Ko

    IPC分类号： H04B1/06

    CPC分类号： H03F3/45188 ,  H03F1/565 ,  H03F3/193 ,  H03F2200/294 ,  H03F2200/546 ,  H03F2203/45386 ,  H03F2203/45641 ,  H03F2203/45726 ,  H04B1/109 ,  H04B1/3805

    摘要： A reconfigurable LNA for increased jammer rejection is disclosed. An exemplary embodiment includes an LNA having a tunable resonant frequency, and a detector configured to output a control signal to tune the resonant frequency of the LNA to increase jammer suppression. An exemplary method includes detecting if a jammer is present, tuning a resonant frequency of an LNA away from the jammer to increase jammer rejection if the jammer is present, and tuning the resonant frequency of the LNA to a selected operating frequency if the jammer is not present.

    摘要翻译： 公开了一种用于增加干扰抑制的可重构LNA。 示例性实施例包括具有可调谐谐振频率的LNA，以及被配置为输出控制信号以调谐LNA的谐振频率以增加干扰抑制的检测器。 一种示例性方法包括检测干扰信号是否存在，如果干扰信号存在，则调谐LNA的谐振频率远离干扰信号以增加干扰抑制，并且如果干扰信号不是，则将LNA的谐振频率调谐到所选择的操作频率 当下。