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    • 4. 发明授权
    • High-order mode filter
    • 高阶模式滤波器
    • US09201196B2
    • 2015-12-01
    • US14360107
    • 2012-11-29
    • Shigeki Takahashi
    • Shigeki Takahashi
    • G02B6/10G02B6/122G02B6/14G02B6/26G02B6/12
    • G02B6/122G02B6/14G02B6/268G02B2006/12097G02B2006/12109
    • A high-order mode filter includes a slab region, a band-shaped projection elongated in an optical waveguide direction, a first optical waveguide including a disturbance element and a second optical waveguide. The disturbance element is formed by doping impurities into the slab region, thus indicating a lower refractive index than the slab region. Both the first optical waveguide and the second optical waveguide are alternately arranged. The first optical waveguide may include a disturbance element positioned close to the projection, while the second optical waveguide may include a disturbance element distanced from the projection in the slab region. The high-order mode filter causes a large high-order mode loss due to interference between a removable high-order mode and an intentional high-order mode at the connecting face between the first optical waveguide and the second optical waveguide, thus reducing reflected light and stray light.
    • 高阶模式滤波器包括平板区域,在光波导方向上延伸的带状突起,包括扰动元件的第一光波导和第二光波导。 扰乱元件是通过将杂质掺杂到板坯区域中形成的,因此表示比板坯区域更低的折射率。 第一光波导和第二光波导都交替布置。 第一光波导可以包括靠近突起定位的扰动元件,而第二光波导可以包括远离板坯区域中的突起的扰动元件。 高阶模式滤波器由于第一光波导和第二光波导之间的连接面处的可移除高阶模式和有意高阶模式之间的干涉而导致大的高阶模损耗,从而减少了反射光 和杂散光。
    • 8. 发明申请
    • DIODE
    • 二极管
    • US20120139079A1
    • 2012-06-07
    • US13296832
    • 2011-11-15
    • Norihito TOKURASatoshi ShirakiShigeki TakahashiShinya SakuraiTakashi Suzuki
    • Norihito TOKURASatoshi ShirakiShigeki TakahashiShinya SakuraiTakashi Suzuki
    • H01L29/47
    • H01L21/76283H01L27/0814H01L27/1203H01L29/0619H01L29/0649H01L29/08H01L29/405H01L29/8611
    • A diode has a semiconductor layer and cathode and anode electrodes on a surface of the semiconductor layer. The semiconductor layer has cathode and anode regions respectively contacting the cathode and anode electrodes. The anode region has a first diffusion region having high surface concentration, a second diffusion region having intermediate surface concentration, and a third diffusion region having low surface concentration. The first diffusion region is covered with the second and third diffusion regions. The second diffusion region has a first side surface facing the cathode region, a second side surface opposite to the cathode region, and a bottom surface extending between the first and second side surfaces. The third diffusion region covers at least one of the first corner part connecting the first side surface with the bottom surface and the second corner part connecting the second side surface with the bottom surface.
    • 二极管在半导体层的表面上具有半导体层和阴极和阳极电极。 半导体层具有分别与阴极和阳极电极接触的阴极和阳极区域。 阳极区域具有表面浓度高的第一扩散区域,具有中间表面浓度的第二扩散区域和具有低表面浓度的第三扩散区域。 第一扩散区被第二和第三扩散区覆盖。 第二扩散区域具有面对阴极区域的第一侧表面,与阴极区域相对的第二侧表面和在第一和第二侧表面之间延伸的底表面。 第三扩散区域覆盖连接第一侧表面与底表面的第一角部和将第二侧表面与底表面连接的第二角部中的至少一个。