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    • 11. 发明授权
    • Optical modulator and optical modulator array
    • 光调制器和光调制器阵列
    • US07155088B2
    • 2006-12-26
    • US10936599
    • 2004-09-09
    • Roshan ThapliyaYasunori OkanoShigetoshi Nakamura
    • Roshan ThapliyaYasunori OkanoShigetoshi Nakamura
    • G02B6/26G02B6/42
    • G02F1/225G02F2001/217
    • An optical modulator is provided with an optical waveguide including an input-side single-mode waveguide for propagating inputted light at single mode, a multi-mode waveguide for propagating the light propagated from the input-side single-mode waveguide at plural guided modes, and an output-side single-mode waveguide for propagating the light propagated from the multi-mode waveguide at single mode to output the light. A lower electrode layer is disposed below the multi-mode waveguide, and an upper electrode is disposed above the multi-mode waveguide. The upper electrode cooperates with the lower electrode layer to apply an electric field to the multi-mode waveguide. A phase of each of the guided modes propagating through the multi-mode waveguide is modulated by applying an electric field to the multi-mode waveguide, and intensity of the light outputted from the output-side single-mode waveguide is modulated by an interference of the phase-modulated guided modes.
    • 光调制器具有光波导,该光波导包括用于单模传播输入光的输入侧单模波导,用于在多个导模下传播从输入侧单模波导传播的光的多模波导, 以及用于在单个模式下传播从多模波导传播的光以输出光的输出侧单模波导。 下电极层设置在多模波导下方,并且上电极设置在多模波导上方。 上电极与下电极层配合以向多模波导施加电场。 通过向多模波导施加电场来调制通过多模波导传播的每个导模的相位,并且从输出侧单模波导输出的光的强度由 相位调制引导模式。
    • 12. 发明申请
    • Optical modulator and optical modulator array
    • 光调制器和光调制器阵列
    • US20050175281A1
    • 2005-08-11
    • US10936599
    • 2004-09-09
    • Roshan ThapliyaYasunori OkanoShigetoshi Nakamura
    • Roshan ThapliyaYasunori OkanoShigetoshi Nakamura
    • G02F1/035G02B6/26G02B6/42G02F1/01G02F1/225
    • G02F1/225G02F2001/217
    • An optical modulator is provided with an optical waveguide including an input-side single-mode waveguide for propagating inputted light at single mode, a multi-mode waveguide for propagating the light propagated from the input-side single-mode waveguide at plural guided modes, and an output-side single-mode waveguide for propagating the light propagated from the multi-mode waveguide at single mode to output the light. A lower electrode layer is disposed below the multi-mode waveguide, and an upper electrode is disposed above the multi-mode waveguide. The upper electrode cooperates with the lower electrode layer to apply an electric field to the multi-mode waveguide. A phase of each of the guided modes propagating through the multi-mode waveguide is modulated by applying an electric field to the multi-mode waveguide, and intensity of the light outputted from the output-side single-mode waveguide is modulated by an interference of the phase-modulated guided modes.
    • 光调制器具有光波导,该光波导包括用于以单模传播输入光的输入侧单模波导;多模波导,用于在多个引导模式下传播从输入侧单模波导传播的光; 以及用于在单个模式下传播从多模波导传播的光以输出光的输出侧单模波导。 下电极层设置在多模波导下方,并且上电极设置在多模波导上方。 上电极与下电极层配合以向多模波导施加电场。 通过向多模波导施加电场来调制通过多模波导传播的每个导模的相位,并且从输出侧单模波导输出的光的强度由 相位调制引导模式。
    • 13. 发明申请
    • JOURNAL BEARING
    • 日志轴承
    • US20100142870A1
    • 2010-06-10
    • US12617080
    • 2009-11-12
    • Yuichiro WAKITakashi NakanoTakaaki KaikogiMotohisa UesatoShigetoshi Nakamura
    • Yuichiro WAKITakashi NakanoTakaaki KaikogiMotohisa UesatoShigetoshi Nakamura
    • F16C23/04
    • F16C17/03F16C23/04F16C33/1085F16C39/02F16C43/02F16C2300/14F16C2360/00F16C2380/26
    • A journal bearing which can be constructed without leading to decrease in rigidity and increase in size, in which lubrication oil can be supplied to the bearing surfaces of the pads with certainty. The journal bearing 10 having a bearing platform 20, a cylindrical bearing housing 30 supported by the bearing platform by the intermediary of a plurality of load supporting members 33, a plurality of pads 40a-40b located swingablly in the bearing housing so that a journal j of a rotation shaft is supported by the pads capable of being self-aligning, and oil supply means for supplying lubrication oil to the bearing surfaces 48 of the pads, is composed such that a connecting member 62 is provided in addition to said load supporting members 33, said connecting member 62 having an oil hole 62a to communicate an oil supply passage 60 in the bearing platform 20 with an oil supply passage consisting of passages 64, 66, and 68 in the bearing housing 30 so that lubrication oil is supplied from the bearing platform 20 to the bearing surfaces 48 of the pads 40a-40b, said connecting member 62 also serving to carry a part of bearing load exerted from the bearing housing 30, and that said connecting member 62 is mounted to said position in such a manner that said part of bearing load carried by the connecting member 62 is smaller than bearing load carried by one of the load supporting members 33.
    • 可以构造而不会导致刚度降低和尺寸增加的轴颈轴承,其中润滑油可以确定地供应到垫的支承表面。 具有轴承平台20的轴颈轴承10,通过多个负载支撑构件33中间由轴承平台支撑的圆柱形轴承壳体30,多个位于轴承壳体中的垫40a-40b,使得轴颈j 旋转轴由能够进行自对准的衬垫支撑,并且用于将润滑油供给到衬垫的支承表面48的供油装置被构成为使得除了所述负载支撑构件之外还设置有连接构件62 如图33所示,所述连接构件62具有油孔62a,用于将轴承平台20中的供油通道60与轴承壳体30中的通道64,66和68组成的供油通道连通,从而从 轴承平台20到垫40a-40b的支承表面48,所述连接构件62还用于承载从轴承壳体30施加的一部分轴承负载,并且所述连接 g构件62以这样的方式安装到所述位置,使得由连接构件62承载的所述轴承负载的部分小于由负载支撑构件33之一承载的轴承负载。
    • 14. 发明授权
    • Optical device, driving method of optical device and manufacture of optical device
    • 光学装置,光学装置的驱动方法和光学装置的制造
    • US06470125B1
    • 2002-10-22
    • US09507919
    • 2000-02-22
    • Keiichi NashimotoShigetoshi NakamuraTakashi Morikawa
    • Keiichi NashimotoShigetoshi NakamuraTakashi Morikawa
    • G02B610
    • G02F1/0353G02F1/3137G02F2201/12
    • An optical device assures high speed drive, excellent temperature stability, low drive voltage and small crosstalk and insertion loss. The optical device includes a single crystal substrate which is used as a conductive or semiconductive lower electrode, an epitaxial buffer layer consisting of an oxide provided on the single crystal substrate, an epitaxial optical waveguide layer with an oxide ferroelectric material having an electro-optic effect which is provided on the buffer layer and which has a channel optical waveguide of which an optical path is switched when a voltage is applied to the branching portion between an optical path for incident light and an optical path for outgoing light, and a couple of upper electrodes for applying a voltage to the branching portion of the channel optical waveguide.
    • 光学器件确保高速驱动,优异的温度稳定性,低驱动电压和小的串扰和插入损耗。 光学器件包括用作导电或半导电下电极的单晶衬底,由设置在单晶衬底上的氧化物组成的外延缓冲层,具有电光效应的氧化物铁电材料的外延光波导层 其设置在缓冲层上,并且当在入射光的光路和出射光的光路之间的分支部分施加电压时,具有光路被切换的通道光波导,以及一对上部 用于向通道光波导的分支部分施加电压的电极。
    • 20. 发明授权
    • Optical deflection element
    • 光学偏转元件
    • US06385355B1
    • 2002-05-07
    • US09517628
    • 2000-03-03
    • Keiichi NashimotoShigetoshi NakamuraTakashi MorikawaHiroaki MoriyamaMasao WatanabeEisuke Osakabe
    • Keiichi NashimotoShigetoshi NakamuraTakashi MorikawaHiroaki MoriyamaMasao WatanabeEisuke Osakabe
    • G02B1295
    • G02F1/295
    • The present invention uses a single substrate to provide a small-size optical waveguide element that requires no optical axis adjustments, can be driven at a low voltage, is excellent in light utilization efficiency, and can rapidly two-dimensionally deflect a light beam. A right-triangle upper electrode and a rectangular transparent upper electrode are formed on top of a thin-film optical waveguide formed on a conductive substrate to serve as a lower electrode, and an emission right-angled prism is secured on top of the transparent upper electrode. A voltage is applied between the upper electrode and the conductive substrate, and between the transparent upper electrode and the conductive substrate. A horizontal deflection is performed upon application of a voltage to the upper electrode and a vertical deflection is performed upon application of a voltage to the transparent upper electrode.
    • 本发明使用单个基板来提供不需要光轴调整的小尺寸光波导元件,可以在低电压下驱动,光利用效率优异,并且能够快速地使光束偏转二维。 在形成在导电性基板上的薄膜光波导的顶部形成直角三角形上部电极和矩形透明上部电极,作为下部电极,发光直角棱镜固定在透明的上部 电极。 在上部电极和导电性基板之间以及透明上部电极与导电性基板之间施加电压。 在向上电极施加电压时执行水平偏转,并且在向透明上电极施加电压时执行垂直偏转。