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    • 53. 发明申请
    • Dispersion compensating apparatus and dispersion compensating method
    • 色散补偿装置和色散补偿方法
    • US20090080901A1
    • 2009-03-26
    • US12292956
    • 2008-12-01
    • Akira MiuraHiroki OoiKiyotoshi Noheji
    • Akira MiuraHiroki OoiKiyotoshi Noheji
    • H04B10/00
    • G02B6/29394G02B6/29358
    • In a dispersion compensating apparatus, a reference identifying unit identifies a reference (X dB down) that makes a penalty lower than a predetermined value in accordance with optical signal information and a reference identifying table, and a VIPA plate temperature adjusting unit adjusts a refractive index of a VIPA plate by modifying a temperature of the VIPA plate so that a transmission center wavelength derived from the reference matches the wavelength defined by an ITU-T Grid. If a dispersion compensation value setting unit performs an optimal residual dispersion value search, the VIPA plate temperature adjusting unit determines if a filtering penalty is lower than a predetermined value in accordance with a penalty management table. If the filtering penalty is lower than the predetermined value, temperature adjustment of the VIPA plate is not performed.
    • 在色散补偿装置中,基准识别单元根据光信号信息和基准识别表来识别使罚分低于预定值的参考(X dB down),VIPA板温度调节单元调节折射率 的VIPA板,通过改变VIPA板的温度,使得从基准导出的透射中心波长与ITU-T网格定义的波长匹配。 如果色散补偿值设定单元执行最佳残余色散值搜索,则VIPA板温度调节单元根据惩罚管理表确定过滤罚分是否低于预定值。 如果过滤罚分低于预定值,则不执行VIPA板的温度调节。
    • 54. 发明授权
    • Light signal switching apparatus
    • 光信号切换装置
    • US07343063B2
    • 2008-03-11
    • US11175160
    • 2005-07-07
    • Morio WadaShinji IioMasayuki SuehiroShinichi NakajimaYoshiyuki AsanoTsuyoshi YakiharaAkira Miura
    • Morio WadaShinji IioMasayuki SuehiroShinichi NakajimaYoshiyuki AsanoTsuyoshi YakiharaAkira Miura
    • G02B6/126G02B6/27G02B6/35
    • G02B6/126
    • A light signal switching apparatus has an input port and output ports, and outputs an output light from a desired output port. The apparatus has a splitter polarizing an input light into first and second polarized light whose polarization planes are different mutually by 90 degrees, a first polarization controller rotating a polarization plane of the second polarized light by 90 degrees to output a third polarized light, a first optical switch switching a path of the first polarized light to the desired output port side, a second optical switch switching a path of the third polarized light to the desired output port side, a second polarization controller rotating a polarization plane of the first polarized light by 90 degrees to output a fourth polarized light, and a combiner combining the third polarized light with the fourth polarized light, to output a combined light to the desired output port.
    • 光信号切换装置具有输入端口和输出端口,并输出来自期望输出端口的输出光。 该装置具有使输入光偏振到偏振面彼此相差90度的第一偏振光和第二偏振光,使第二偏振光的偏振面旋转90度的第一偏振光控制器输出第三偏振光,第一偏振光 光开关将第一偏振光的路径切换到期望的输出端口侧,第二光开关将第三偏振光的路径切换到期望的输出端口侧;第二偏振光控制器,其将第一偏振光的偏振面旋转, 90度以输出第四偏振光,以及将第三偏振光与第四偏振光组合的组合器,以将组合的光输出到期望的输出端口。