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    Waveguide fiber for noise suppression
    2.
    发明授权
    Waveguide fiber for noise suppression 失效
    用于噪声抑制的波导光纤

    公开(公告)号：US07076172B2

    公开(公告)日：2006-07-11

    申请号：US10192188

    申请日：2002-07-09

    申请人： Shiva Kumar

    发明人： Shiva Kumar

    IPC分类号： H04B10/12

    CPC分类号： H04B10/2507

    摘要： An optical waveguide system exhibiting reduced noise includes a varying dispersion optical waveguide fiber and a high frequency electrical filter. The varying dispersion fiber shifts the frequency spectrum of the noise relative to that of the signal so that the noise can be filtered with substantially no effect on the signal. The varying dispersion fiber is a passive component of the optical system and is compatible with optical connecting and splicing.

    摘要翻译： 显示出降低噪声的光波导系统包括变化色散光波导光纤和高频电滤波器。 变化的色散光纤相对于信号的频谱偏移，使得可以对信号基本上没有影响来对噪声进行滤波。 不同色散光纤是光学系统的无源元件，与光学连接和拼接兼容。

    Negative dispersion single mode waveguide fiber
    4.
    发明授权
    Negative dispersion single mode waveguide fiber 失效
    负色散单模光纤

    公开(公告)号：US06430346B1

    公开(公告)日：2002-08-06

    申请号：US09626632

    申请日：2000-07-27

    申请人： Jan Conradi ,  Shiva Kumar ,  Steven S. Rosenblum

    发明人： Jan Conradi ,  Shiva Kumar ,  Steven S. Rosenblum

    IPC分类号： G02B602

    CPC分类号： G02B6/03644 ,  G02B6/02009 ,  G02B6/02014 ,  G02B6/02252 ,  G02B6/02257 ,  G02B6/02261 ,  G02B6/0228 ,  G02B6/0286 ,  G02B6/03611 ,  G02B6/03633 ,  G02B6/03688 ,  G02B6/29377

    摘要： Disclosed is a negative total dispersion waveguide fiber having low attenuation and sufficiently good resistance to bend loss that attenuation is not impacted by cabling or otherwise buffering the waveguide. The total dispersion slope of the waveguide fiber is positive so that the zero dispersion wavelength is greater than 1600 nm. The waveguide fiber may advantageously be used in a link having a distributed feedback laser as a signal source. The negative dispersion of the waveguide in accordance with the invention compresses the launched signal pulse when the laser is positively chirped. The laser is operated at optimum bias, which results in positive chirp, but no dispersion penalty is incurred in the link. The waveguide fiber in accordance with the invention may also be advantageously used as a dispersion compensating fiber in a high performance multiplexed telecommunications link.

    摘要翻译： 公开了具有低衰减和足够好的抗弯曲损耗的负总色散波导光纤，其衰减不受布线或其它方式缓冲波导的影响。 波导纤维的总色散斜率为正，使得零色散波长大于1600nm。 波导光纤可以有利地用于具有分布反馈激光器作为信号源的链路中。 当激光被正啁啾时，根据本发明的波导的负色散压缩所发射的信号脉冲。 激光器以最佳偏压运行，这导致正线性调频脉冲，但在链路中不会产生分散损失。 根据本发明的波导光纤还可以有利地用作高性能复用电信链路中的色散补偿光纤。

    Flow control between fiber channel and wide area networks
    8.
    发明授权
    Flow control between fiber channel and wide area networks 有权
    光纤通道和广域网之间的流量控制

    公开(公告)号：US07397764B2

    公开(公告)日：2008-07-08

    申请号：US10426819

    申请日：2003-04-30

    申请人： Babu Kalampukattussery Cherian ,  William R. Krieg ,  Shreedhara Maduvinakodi Ramegowda ,  Hemant Kumar KashinathRao Revankar ,  Andrew T. Schnable ,  Shiva Kumar Yenigalla

    发明人： Babu Kalampukattussery Cherian ,  William R. Krieg ,  Shreedhara Maduvinakodi Ramegowda ,  Hemant Kumar KashinathRao Revankar ,  Andrew T. Schnable ,  Shiva Kumar Yenigalla

    IPC分类号： G01R31/08

    CPC分类号： H04L47/30 ,  H04L47/10 ,  H04L47/12 ,  H04L47/39

    摘要： Multiple fiber channel (FC) storage area networks (SANs) are interconnected over wide-area networks (WANs) to form a long-distance (e.g., greater than about 10 km) distributed storage area network (DSAN) that includes FC to Internet Protocol (IP) over WAN (e.g., SONET or gigabit Ethernet (GE)) gateways that interwork the FC buffer-to-buffer and IP/WAN flow-control mechanisms appropriate to either the SONET or GE link layers using an additive increase, multiplicative decrease (AIMD) congestion avoidance algorithm. The gateways effectively spoof the FC buffer-to-buffer credit mechanism on the FC-interface side of the gateway, while using an IP Internet control message protocol (ICMP) quench mechanism on all WAN links and additionally the IEEE 802.3 pause packet flow control mechanism on gigabit Ethernet (GE) WAN links in combination, in both cases, with a rate-throttling mechanism at the FC IP converter.

    摘要翻译： 多光纤通道（FC）存储区域网络（SAN）通过广域网（WAN）进行互连，以形成长距离（例如，大于10公里）的分布式存储区域网络（DSAN），包括FC到互联网协议 （IP）通过广域网（例如，SONET或千兆以太网（GE））网关，其使用适用于SONET或GE链路层的FC缓冲区到缓冲区和IP / WAN流量控制机制，使用加法增加，乘法减少 （AIMD）拥塞避免算法。 网关在网关的FC接口侧有效地欺骗FC缓冲区到缓冲区信用机制，同时在所有WAN链路上使用IP Internet控制消息协议（ICMP）淬灭机制，另外还有IEEE 802.3暂停数据包流控制机制 在千兆以太网（GE）WAN链路中，在两种情况下，都使用FC < - > IP转换器的速率调节机制。

    Unequal pulse spacer
    9.
    发明授权
    Unequal pulse spacer 有权
    不等脉冲间隔

    公开(公告)号：US07027735B2

    公开(公告)日：2006-04-11

    申请号：US10115699

    申请日：2002-04-03

    申请人： Shiva Kumar

    发明人： Shiva Kumar

    IPC分类号： H04J14/02

    CPC分类号： H04B10/2563 ,  H04J14/08

    摘要： For suppressing intra-channel four wave mixing in a time division multiplexing (TDM) system, where N synchronous data streams, each having a reduced data pulse width within a bit slot timing interval, from parallel to serial form, are converted for optically bit interleaving the N synchronous data streams into the optical communication link at a nominal bit slot delay between sequential N synchronous data streams related to the bit slot timing interval to provide a serial data sequence of short optical pulses having an equal bit slot delay between sequential pulses, a sequential bit slot delay is varied between two of the short optical pulses to provide an unequal bit slot delay between sequential pulses within the serial data sequence of short optical pulses for suppression of undesired intra-channel four-wave mixing pulses among the pulses and thereby, improvement of transmission performance.

    摘要翻译： 为了抑制在时分复用（TDM）系统中的信道内四波混频，其中每个在比特时隙定时间隔内具有减少的数据脉冲宽度的并行到串行形式的N个同步数据流被转换为光学比特交织 N个同步数据流以与比特时隙定时间隔相关的连续N个同步数据流之间的标称位时隙延迟进入光通信链路，以提供在顺序脉冲之间具有相等位时隙延迟的短光脉冲的串行数据序列， 顺序位时隙延迟在两个短光脉冲之间变化，以在短光脉冲的串行数据序列内的顺序脉冲之间提供不相等的位时隙延迟，用于抑制脉冲之间不期望的通道内四波混频脉冲， 传输性能的提高。

    Ad hoc network
    10.
    发明授权
    Ad hoc network 有权
    Ad hoc网络

    公开(公告)号：US09408242B2

    公开(公告)日：2016-08-02

    申请号：US13266128

    申请日：2011-02-24

    申请人： Govind Rangaswamy Kadambi ,  Rinki Sharma ,  Shiva Kumar Ponnuraj

    发明人： Govind Rangaswamy Kadambi ,  Rinki Sharma ,  Shiva Kumar Ponnuraj

    IPC分类号： H04H20/71 ,  H04W76/02 ,  H04W8/00 ,  H04W84/18 ,  H04W48/16

    CPC分类号： H04W76/14 ,  H04W8/005 ,  H04W48/16 ,  H04W76/15 ,  H04W84/18

    摘要： The present disclosure set forth a method for a node to participate in an ad hoc network. The first node receives a first link information broadcasted omnidirectionally by a second node. The first link information indicates if the second node is communicating via a first directional link in a first polarization with a third node. The first node establishes a second directional link in a second polarization with the second node.

    摘要翻译： 本公开提出了一种用于节点参与自组织网络的方法。 第一节点接收由第二节点全向广播的第一链路信息。 第一链路信息指示第二节点是否经由第一极化中的第一定向链路与第三节点进行通信。 第一节点与第二节点在第二极化中建立第二定向链路。