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    • 7. 发明授权
    • Flexible open ring optical network and method
    • 柔性开环光网络及方法
    • US07957644B2
    • 2011-06-07
    • US11745974
    • 2007-05-08
    • Susumu KinoshitaKoji TakeguchiSatoru OdateCechan Tian
    • Susumu KinoshitaKoji TakeguchiSatoru OdateCechan Tian
    • H04B10/08H04B10/20H04J14/02
    • H04J14/0291H04J14/0204H04J14/0205H04J14/0206H04J14/0212H04J14/0227H04J14/0241H04J14/0283
    • A flexible open ring optical network includes a plurality of nodes connected by twin or other suitable optical rings. Each node is operable to passively add and passively drop traffic from the rings. The nodes may include a transport element for each ring. The transport elements include an optical splitter element and an optical combiner element. The optical splitter element is operable to passively combine an add signal including local add traffic and a first transport signal including ingress traffic from a coupled optical ring to generate a second transport signal including egress traffic for transmission on the coupled optical ring. The optical combiner element is coupled to the optical splitter element and is operable to passively split a third transport signal including the ingress traffic to generate a drop signal including local drop traffic and a fourth transport signal including the ingress traffic. Protection switching may be provided by selectively openable switches disposed in and distributed around the rings.
    • 柔性开环光网络包括通过双或其它合适的光环连接的多个节点。 每个节点都可以被动地添加和被动地从环中删除流量。 节点可以包括用于每个环的传输元件。 传输元件包括光分路器元件和光组合器元件。 光分路器元件可操作地被动组合包括本地增加业务的添加信号和包括来自耦合光环路的入口业务的第一传输信号,以产生包括用于在耦合的光环上传输的出口业务的第二传输信号。 光学组合器元件耦合到光分路器元件,并且可操作以被动地分裂包括入口业务的第三传输信号,以产生包括本地丢弃业务的丢弃信号和包括入口业务的第四传输信号。 可以通过设置在环中并分布在环周围的选择性可开启的开关来提供保护切换。
    • 9. 发明授权
    • System and method for protecting traffic in a hubbed optical ring network
    • 用于保护集线器光环网络中的业务的系统和方法
    • US07120360B2
    • 2006-10-10
    • US11031639
    • 2005-01-06
    • Cechan TianSusumu Kinoshita
    • Cechan TianSusumu Kinoshita
    • H04B10/00
    • H04J14/0291H04J14/0283
    • An optical access network includes a first ring and a second ring communicating optical signals in opposite directions. The network also includes an access node coupled to both rings that adds traffic in a first wavelength of a first optical signal communicated on the first ring. Furthermore, the network includes a hub node coupled to each ring and coupled to an optical core network. The hub node receives the first optical signal, forwards a first copy of the signal to a first wavelength blocking unit that terminates the traffic in the first wavelength, and forwards a second copy of the signal to a first network interconnection element that forwards the traffic in the first wavelength to the core network. Furthermore, upon detection of an interruption of the traffic in the first wavelength on the first ring, the access node adds the traffic in a second wavelength of a second optical signal communicated on the second ring. In addition, the hub node receives the second optical signal, forwards a first copy of the signal to a second wavelength blocking unit that terminates the traffic in the second wavelength, and forwards a second copy of the signal to a second network interconnection element that forwards the traffic in the second wavelength to the core network.
    • 光接入网络包括在相反方向上传送光信号的第一环和第二环。 网络还包括耦合到两个环的接入节点,其增加在第一环上传送的第一光信号的第一波长的业务。 此外,网络包括耦合到每个环并耦合到光核心网络的集线器节点。 集线器节点接收第一光信号,将信号的第一拷贝转发到终止第一波长的业务的第一波长阻塞单元,并将该信号的第二副本转发给转发业务的第一网络互连元件 第一波长到核心网。 此外,在检测到第一环上的第一波长的业务中断时,接入节点将业务加到在第二环上传送的第二光信号的第二波长。 此外,集线器节点接收第二光信号,将信号的第一拷贝转发到终止第二波长的业务的第二波长阻塞单元,并将信号的第二副本转发到转发的第二网络互连元件 流量在第二波长到核心网。
    • 10. 发明申请
    • Method and system for shared optical protection
    • 共享光学保护方法与系统
    • US20060133803A1
    • 2006-06-22
    • US11015222
    • 2004-12-17
    • Cechan TianSusumu Kinoshita
    • Cechan TianSusumu Kinoshita
    • H04B10/00
    • H04J14/0295H04B10/032H04J14/0227H04J14/0241H04J14/0283
    • An optical network includes an optical ring capable of transmitting traffic in one of a plurality of wavelengths of an optical signal between a plurality of nodes. The nodes transmit a plurality of working traffic streams in a plurality of working wavelengths. In response to an interruption in a first working traffic stream, a node transmits, in a protection wavelength, a first protection traffic stream that is associated with the first working traffic stream. Furthermore, in response to an interruption in a second working traffic stream, a node transmits, in the protection wavelength, a second protection traffic stream that is associated with the second working traffic stream, such that the first protection traffic stream and the second protection traffic stream share, at different times, the protection wavelength.
    • 光网络包括能够以多个节点之间的光信号的多个波长中的一个波长发送业务的光环。 节点以多个工作波长发送多个工作业务流。 响应于第一工作业务流中的中断,节点以保护波长发送与第一工作业务流相关联的第一保护业务流。 此外,响应于第二工作业务流中断,节点以保护波长发送与第二工作业务流相关联的第二保护业务流,使得第一保护业务流和第二保护业务 流分享,在不同的时间,保护波长。