Design of CMOS integrated germanium photodiodes
    41.
    发明授权
    Design of CMOS integrated germanium photodiodes 有权
    CMOS集成锗光电二极管的设计

    公开(公告)号:US07613369B2

    公开(公告)日:2009-11-03

    申请号:US11735251

    申请日:2007-04-13

    IPC分类号: G02B6/12

    CPC分类号: G02B6/12007

    摘要: A CMOS processing compatible germanium on silicon integrated waveguide photodiode. Positioning contacts in predicted low optical field regions, establishing side trenches in the silicon layer along the length of the photodiode reduces optical losses. Novel taper dimensions are selected based on the desirability of expected operational modes, reducing optical losses when light is injected from the silicon layer to the germanium layer. Reduced vertical mismatch systems have improved coupling between waveguide and photodiode. Light is coupled into and/or out of a novel silicon ring resonator and integrated waveguide photodiode system with reduced optical losses by careful design of the geometry of the optical path. An integrated waveguide photodiode with a reflector enables transmitted light to reflect back through the integrated waveguide photodiode, improving sensitivity. Careful selection of the dimensions of a novel integrated waveguide microdisk photodiode system results in reduced scattering. Improved sensitivity integrated waveguide photodiodes comprise integrated heaters.

    摘要翻译: CMOS处理兼容锗硅集成波导光电二极管。 在预测的低光场区域中定位触点,沿着光电二极管的长度在硅层中建立侧沟槽减少光损耗。 基于期望的操作模式的期望来选择新的锥形尺寸,当光从硅层注入到锗层时减小光学损耗。 减少的垂直失配系统改善了波导和光电二极管之间的耦合。 通过仔细设计光路的几何形状,光被耦合到新的硅环谐振器和集成波导光电二极管系统中并减少光损耗。 具有反射器的集成波导光电二极管使透射光能够通过集成波导光电二极管反射回来,提高灵敏度。 仔细选择新型集成波导微盘光电二极管系统的尺寸导致散射减少。 集成波导光电二极管的灵敏度提高集成加热器。

    Fiber to chip coupler
    42.
    发明授权
    Fiber to chip coupler 有权
    光纤到芯片耦合器

    公开(公告)号:US07162124B1

    公开(公告)日:2007-01-09

    申请号:US10799040

    申请日:2004-03-11

    IPC分类号: G02B6/34 G02B6/26

    摘要: A fiber to chip coupling connecting an optical fiber to an integrated circuit. A section of fiber is laid on top of the surface of the chip, where the end of the fiber has been cut at an angle to form an angled tip. The angled tip has a flat surface which reflects light down to a waveguide grating coupler disposed on the integrated circuit. Light is reflected off the reflective surface of the angled tip by total internal reflection. The waveguide grating coupler is designed to accept the slightly diverging light beam from the reflective surface of the angled tip of the fiber. Light can also propagate through the fiber to chip coupler in the opposite direction, up from the substrate through the waveguide grating and into an optical fiber after bouncing off the reflective surface of the angled tip.

    摘要翻译: 将光纤连接到集成电路的光纤到芯片耦合。 纤维的一部分被放置在芯片的表面的顶部,其中纤维的端部已经被成角度地切割以形成倾斜的尖端。 倾斜的尖端具有平坦表面,其将光向下反射到布置在集成电路上的波导光栅耦合器。 光通过全内反射从倾斜尖端的反射表面反射。 波导光栅耦合器被设计成接收来自光纤的倾斜尖端的反射表面的轻微发散的光束。 光也可以从相对的方向通过光纤传播到芯片耦合器,从衬底通过波导光栅向上延伸,并且在从倾斜尖端的反射表面弹起之后进入光纤。