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    • 73. 发明授权
    • Optical switch and network system including the same
    • 光开关和网络系统包括相同
    • US07715709B2
    • 2010-05-11
    • US10914220
    • 2004-08-10
    • Kouichirou AmemiyaTakao NaitoToshiki Tanaka
    • Kouichirou AmemiyaTakao NaitoToshiki Tanaka
    • H04J14/00
    • H04J14/0227H04J14/0221H04J14/0267H04J14/0269H04J14/0284H04L45/12H04L45/48H04L45/62H04Q11/0062H04Q2011/0073
    • The optical switch, having a plurality of ports capable of switching optical signal routes in a network in the form of light, includes a detection means for detecting information in regard to the transmission condition of an optical signal passing through each port; and a control means for exchanging the transmission condition information between each switch and controlling the ports, so as to select one route from among a plurality of routes transmitting the optical signal based on the difference of transmission condition information between the relevant switches. The transmission condition information is the power of the optical signal. When the difference between each switch exists, or when at least one switch intervenes in the middle of the transmission route, by selecting a transmission route which minimizes accumulated differences among the switches, configuring a tree structure conventionally performed through manual operation can be set automatically in an optical network system.
    • 具有能够以光的形式在网络中切换光信号路径的多个端口的光开关包括检测装置,用于检测通过每个端口的光信号的发送状态的信息; 以及控制装置,用于在每个交换机之间交换传输条件信息并控制端口,以便基于相关交换机之间的传输条件信息的差异,从发送光信号的多个路由中选择一个路由。 发送条件信息是光信号的功率。 当存在每个开关之间的差异时,或者当至少一个开关插入在传输路由的中间时,通过选择使开关之间的累积差异最小化的传输路由,可以自动设置通过手动操作常规执行的树结构 光网络系统。
    • 74. 发明申请
    • Electrical-dispersion compensating apparatus, optical receiving apparatus, and optical receiving method
    • 电色散补偿装置,光接收装置和光接收方法
    • US20090116844A1
    • 2009-05-07
    • US12230247
    • 2008-08-26
    • Toshiki TanakaYuichi AkiyamaTomoo Takahara
    • Toshiki TanakaYuichi AkiyamaTomoo Takahara
    • H04B10/00
    • H04B10/6971H04B10/677
    • An optical receiving apparatus branches an optical signal, photo-electric-converts the branched signals, and compensates dispersion in each of the converted electrical signals. Electrical-dispersion compensators respectively compensate the dispersion in the electrical signals using a transversal filter having plural taps. A dispersion control unit controls the dispersion compensation amount for each of the electrical signals by adjusting tap coefficients of the transversal filter. A delay control unit controls the difference in the delay time of the electrical signals by adjusting the tap coefficients adjusted by the dispersion control unit. An identifying circuit identifies data in the optical signal based on each of the electrical signals that have been subjected to dispersion compensation by each of the electrical-dispersion compensators.
    • 光接收装置分支光信号,对分支信号进行光电转换,并补偿每个转换的电信号中的色散。 电色散补偿器使用具有多个抽头的横向滤波器分别补偿电信号中的色散。 色散控制单元通过调整横向滤波器的抽头系数来控制每个电信号的色散补偿量。 延迟控制单元通过调整由色散控制单元调节的抽头系数来控制电信号的延迟时间的差异。 识别电路基于通过每个电色散补偿器进行色散补偿的每个电信号来识别光信号中的数据。