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54 条记录 (耗时 0.03 秒)

    Waveguide profile for large effective area
    21.
    发明授权
    Waveguide profile for large effective area 失效
    波导形状大面积有效

    公开(公告)号：US06421489B1

    公开(公告)日：2002-07-16

    申请号：US09530018

    申请日：2000-04-21

    申请人： George E. Berkey ,  Yanming Liu

    发明人： George E. Berkey ,  Yanming Liu

    IPC分类号： G02B602

    CPC分类号： G02B6/03627 ,  G02B6/02019 ,  G02B6/02238 ,  G02B6/0228 ,  G02B6/0281 ,  G02B6/0283 ,  G02B6/03611

    摘要： Disclosed is a single mode optical waveguide fiber having a segmented core design. The core may have two or more segments. The highest refractive index portion of the core is spaced apart from the centerline of the waveguide fiber. The relative index of the first or center segment of the core is negative, where the reference refractive index is taken to be the minimum index clad. This family of core profiles provides effective areas in the range of 110 &mgr;m2 to 150 &mgr;m2 in the operating window around 1550 nm.

    摘要翻译： 公开了具有分段核设计的单模光纤。 核心可以具有两个或更多个段。 芯的最高折射率部分与波导纤维的中心线间隔开。 芯的第一或中心部分的相对折射率为负，其中参考折射率被认为是最小折射率包层。 这个核心轮廓系列在1550nm左右的操作窗口中提供了在110m2到150mum2范围内的有效面积。

    Large effective area waveguide fiber
    23.
    发明授权
    Large effective area waveguide fiber 失效
    大面积有效面积的光纤

    公开(公告)号：US5835655A

    公开(公告)日：1998-11-10

    申请号：US378780

    申请日：1995-01-26

    申请人： Yanming Liu ,  Mark A. Newhouse

    发明人： Yanming Liu ,  Mark A. Newhouse

    IPC分类号： G02B6/028 ,  G02B6/036 ,  G02B6/18

    CPC分类号： G02B6/03666 ,  G02B6/02014 ,  G02B6/02019 ,  G02B6/02238 ,  G02B6/0281 ,  G02B6/0286 ,  G02B6/03611 ,  G02B6/03633 ,  G02B6/03644

    摘要： A single mode optical waveguide fiber having a segmented core designed to provide a large effective area for light transmission. The large effective area reduces waveguide fiber non-linearities. The inventive waveguide is thus suited for transmission of high power signals over long distances. Embodiments of the inventive single mode waveguide including five core segments are given. The large effective area is achieved with essentially no degradation in optical or mechanical performance of the waveguide.

    摘要翻译： 一种单模光纤，其具有被设计成为光透射提供大的有效面积的分段芯。 大的有效面积降低了波导纤维的非线性。 因此，本发明的波导适合于长距离传输高功率信号。 给出了包括五个核心段的本发明单模波导的实施例。 在波导的光学或机械性能基本上没有劣化的情况下实现了大的有效面积。

    Large effective area single mode optical waveguide
    24.
    发明授权
    Large effective area single mode optical waveguide 失效
    大型有效面积单模光波导

    公开(公告)号：US5715346A

    公开(公告)日：1998-02-03

    申请号：US573472

    申请日：1995-12-15

    申请人： Yanming Liu

    发明人： Yanming Liu

    IPC分类号： G02B6/028 ,  G02B6/02 ,  G02B6/036 ,  G02B6/18

    CPC分类号： G02B6/03611 ,  G02B6/02 ,  G02B6/02019 ,  G02B6/02223 ,  G02B6/0281 ,  G02B6/03633

    摘要： Disclosed is a single mode optical waveguide fiber which limits nonlinear effects at both the 1300 nm window and the 1550 nm window of operations. Examples of core region refractive index profiles which yield the required properties are a modified step index profile and profiles which have a maximum .DELTA.% which is spaced apart from the centerline of the waveguide fiber.

    摘要翻译： 公开了在1300nm窗口和1550nm操作窗口处限制非线性效应的单模光纤光纤。 产生所需性能的芯区折射率分布的示例是修改的阶跃折射率分布和具有与波导光纤的中心线间隔开的最大DELTA％的轮廓。

    Method and node apparatus for traffic protection in optical transport network
    25.
    发明授权
    Method and node apparatus for traffic protection in optical transport network 有权
    光传输网中流量保护的方法和节点装置

    公开(公告)号：US07936990B2

    公开(公告)日：2011-05-03

    申请号：US11568310

    申请日：2005-09-05

    申请人： Jun Yan ,  Yanming Liu

    发明人： Jun Yan ,  Yanming Liu

    IPC分类号： G02F1/00 ,  H04B10/08

    CPC分类号： H04J14/0291 ,  H04B10/032 ,  H04J3/14 ,  H04J3/1611 ,  H04J14/0283

    摘要： Disclosed is a method and node apparatus for traffic protection of Optical Transport Network (OTN), including: setting a part of channels in one fiber as working channels used for carrying traffic in need of protection, and setting a part of channels in the other fiber with a reverse transmission direction as protection channels, the number of which is equal to that of the working channels, to form a one-to-one protection for the working channels; when a failure in an optical line of OTN is detected, determining a bridging node and a switching node in accordance with pre-designated protection strategy, bridging and switching the traffic to be transmitted through the failed optical line between the working channels and the protection channels at the determined bridging node and switching node. This invention can realize OTN protection based on two-Fiber OMS shared protection ring, and improve the transmission reliability of optical networks.

    摘要翻译： 公开了一种用于光传输网络（OTN）的业务保护的方法和节点装置，包括：将一个光纤中的一部分信道设置为用于承载需要保护的业务的工作信道，并在另一个光纤中设置一部分信道 具有反向传输方向作为保护通道，其数量等于工作通道的数量，以对工作通道形成一对一的保护; 当检测到OTN的光线路故障时，根据预先指定的保护策略确定桥接节点和交换节点，桥接和切换通过工作信道与保护信道之间的故障光线路传输的流量 在确定的桥接节点和交换节点。 本发明可以实现基于双光纤OMS共享保护环的OTN保护，提高光网络的传输可靠性。

    PASSIVE OPTICAL NETWORK WITH WAVELENGTH DIVISION MULTIPLEXING
    27.
    发明申请
    PASSIVE OPTICAL NETWORK WITH WAVELENGTH DIVISION MULTIPLEXING 有权
    被动光网络与波长分割多路复用

    公开(公告)号：US20090154924A1

    公开(公告)日：2009-06-18

    申请号：US11956556

    申请日：2007-12-14

    申请人： Yanming Liu ,  Richard Chen

    发明人： Yanming Liu ,  Richard Chen

    IPC分类号： H04B10/20

    CPC分类号： H04J14/0282

    摘要： In one embodiment, a passive optical network is provided that includes: an optical line terminal (OLT) configured to transmit a plurality of downstream signals into a corresponding plurality of passive optical networks and to receive a corresponding plurality of upstream signals from the plurality of passive optical networks, wherein each downstream signal is separated in wavelength from the remaining wavelength signals, and wherein each upstream signal is separated in wavelength from the remaining upstream signal; a Mux/Demux configured to multiplex the downstream signals from the OLT into a optical fiber and to demultiplex upstream signals from the optical fibers to the OLT; and a splitter configured to split the downstream signals from the OLT to a plurality of optical network units such that each optical network unit receives the plurality of downstream signals.

    摘要翻译： 在一个实施例中，提供了一种无源光网络，其包括：光线路终端（OLT），其被配置为将多个下行信号发送到对应的多个无源光网络中，并且从多个被动方式接收相应的多个上行信号 光网络，其中每个下行信号在波长上与剩余的波长信号分离，并且其中每个上行信号在波长上与剩余的上行信号分离; Mux / Demux，被配置为将来自OLT的下行信号复用到光纤中，并解复用从光纤到OLT的上行信号; 以及分配器，被配置为将来自OLT的下行信号分离成多个光网络单元，使得每个光网络单元接收多个下行信号。

    Plasma treatment of anodic oxides for electrolytic capacitors
    29.
    发明授权
    Plasma treatment of anodic oxides for electrolytic capacitors 有权
    用于电解电容器的阳极氧化物的等离子体处理

    公开(公告)号：US07286336B2

    公开(公告)日：2007-10-23

    申请号：US11128849

    申请日：2005-05-13

    申请人： Yanming Liu ,  Barry Muffoletto ,  David Goad

    发明人： Yanming Liu ,  Barry Muffoletto ,  David Goad

    IPC分类号： H01G9/04

    CPC分类号： H01G9/042 ,  H01G9/0032 ,  H01G9/052 ,  H01G9/07 ,  Y10T29/41 ,  Y10T29/417

    摘要： An oxygen plasma process for treating a dielectric oxide layer, particularly an anodic oxide, subsequent to its incorporation into an electrolytic capacitor is described. The present treatment reduces DC leakage and improves shelf life stability of the resulting capacitor in comparison to anodic oxides treated in a conventional manner. This is important for critical applications such as implantable cardioverter defibrillators where capacitor charging time and charge/discharge energy efficiency are critical.

    摘要翻译： 描述了用于处理电介质氧化物层，特别是阳极氧化物的氧等离子体处理，其在其结合到电解电容器中之后。 与以常规方式处理的阳极氧化物相比，本发明的处理降低了DC泄漏并改善了所得电容器的保质期稳定性。 这对关键应用非常重要，例如其中电容器充电时间和充电/放电能量效率至关重要的植入式心律转复除颤器。