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    Enhanced optical modulation using slow light
    1.
    发明授权
    Enhanced optical modulation using slow light 有权
    使用慢光增强光调制

    公开(公告)号：US09535308B2

    公开(公告)日：2017-01-03

    申请号：US14036964

    申请日：2013-09-25

    Applicant: Oracle International Corporation

    Inventor： Guoliang Li ,  Ashok V. Krishnamoorthy ,  Xuezhe Zheng ,  Ying L. Luo ,  John E. Cunningham

    IPC: G02F1/035 ,  G02F1/225 ,  G02B6/122 ,  G02F1/21

    CPC classification number: G02F1/2257 ,  G02B6/1225 ,  G02F2001/212 ,  G02F2202/32

    Abstract: A photonic integrated circuit (PIC) is described. This PIC includes a semiconductor-barrier layer-semiconductor diode in an optical waveguide that conveys an optical signal, where the barrier layer is an oxide or a high-k material. Moreover, semiconductor layers in the semiconductor-barrier layer-semiconductor diode may include geometric features (such as a periodic pattern of holes or trenches) that create a lattice-shifted photonic crystal optical waveguide having a group velocity of light that is lower than the group velocity of light in the first semiconductor layer and the second semiconductor layer without the geometric features. The optical waveguide is included in an optical modulator, such as a Mach-Zehnder interferometer (MZI).

    Abstract translation: 描述了一种光子集成电路（PIC）。 该PIC包括传输光信号的光波导中的半导体阻挡层 - 半导体二极管，其中阻挡层是氧化物或高k材料。 此外，半导体阻挡层 - 半导体二极管中的半导体层可以包括几何特征（例如空穴或沟槽的周期性图案），其产生具有低于组的光速的光子晶体光子晶体光波导 第一半导体层和第二半导体层中的光的速度没有几何特征。 光波导包括在诸如Mach-Zehnder干涉仪（MZI）的光学调制器中。

    OPTICAL COMPONENTS HAVING A COMMON ETCH DEPTH
    3.
    发明申请
    OPTICAL COMPONENTS HAVING A COMMON ETCH DEPTH 有权
    具有常见蚀刻深度的光学部件

    公开(公告)号：US20130301981A1

    公开(公告)日：2013-11-14

    申请号：US13890140

    申请日：2013-05-08

    Applicant: ORACLE INTERNATIONAL CORPORATION

    Inventor： Guoliang Li ,  Xuezhe Zheng ,  Ashok V. Krishnamoorthy

    IPC: G02B6/136 ,  G02B6/122

    CPC classification number: G02B6/136 ,  G02B6/12004 ,  G02B6/12007 ,  G02B6/122 ,  G02B6/125

    Abstract: An optical device is described. This optical device includes multiple components, such as a ring resonator, an optical waveguide and a grating coupler, having a common etch depth (which is associated with a single etch step or operation during fabrication). Moreover, these components may be implemented in a semiconductor layer in a silicon-on-insulator technology. By using a common etch depth, the optical device may provide: compact active devices, multimode ultralow-loss optical waveguides, high-speed ring resonator modulators with ultralow power consumption, and compact low-loss interlayer couplers for multilayer-routed optical links. Furthermore, the single etch step may help reduce or eliminate optical transition loss, and thus may facilitate high yield and low manufacturing costs.

    Abstract translation: 描述光学装置。 该光学器件包括具有公共蚀刻深度（其与单个蚀刻步骤或制造期间的操作相关联）的多个部件，例如环形谐振器，光学波导和光栅耦合器。 此外，这些组件可以在绝缘体上硅技术中的半导体层中实现。 通过使用普通的蚀刻深度，光学器件可以提供：紧凑的有源器件，多模超低损耗光波导，具有超低功耗的高速环形谐振器调制器和用于多层路由光链路的紧凑型低损耗层间耦合器。 此外，单个蚀刻步骤可以有助于减少或消除光学转变损耗，因此可以促进高产率和低制造成本。

    Wavelength-locking a ring-resonator filter
    6.
    发明授权
    Wavelength-locking a ring-resonator filter 有权
    波长锁定环形谐振器滤波器

    公开(公告)号：US09310562B2

    公开(公告)日：2016-04-12

    申请号：US14203876

    申请日：2014-03-11

    Applicant: Oracle International Corporation

    Inventor： Xuezhe Zheng ,  Guoliang Li ,  Ying L. Luo ,  Ashok V. Krishnamoorthy

    IPC: G02B6/26 ,  G02B6/293 ,  H04J14/00 ,  G02B6/28

    CPC classification number: G02B6/29341 ,  G02B6/2852 ,  G02F1/3132 ,  H04J14/00

    Abstract: In an optical device, a ring resonator, having a resonance wavelength, optically couples an optical signal that includes a wavelength from an input optical waveguide to an output optical waveguide. A monitoring mechanism in the optical device, which is optically coupled to the output optical waveguide, monitors an output optical signal on the output optical waveguide. For example, the monitoring mechanism may dither a temperature of the ring resonator at a frequency using a heater, and the output optical signal may be monitored by determining amplitude and phase information of the output optical signal at the frequency and twice the frequency. Moreover, control logic in the optical device adjusts the resonance wavelength based on the monitored output optical signal, where the adjustment is made without monitoring an input optical signal on the input optical waveguide.

    Abstract translation: 在光学装置中，具有谐振波长的环形谐振器将包括来自输入光波导的波长的光信号光耦合到输出光波导。 光学装置中的光耦合到输出光波导的监视机构监视输出光波导上的输出光信号。 例如，监视机构可以使用加热器将环形谐振器的温度以一定的频率进行抖动，并且可以通过确定频率和频率两倍的输出光信号的幅度和相位信息来监视输出光信号。 此外，光学装置中的控制逻辑基于所监视的输出光信号来调节谐振波长，其中在不监视输入光波导上的输入光信号的情况下进行调整。

    HYBRID OPTICAL SOURCE WITH SEMICONDUCTOR REFLECTOR
    8.
    发明申请
    HYBRID OPTICAL SOURCE WITH SEMICONDUCTOR REFLECTOR 有权
    具有半导体反射器的混合光源

    公开(公告)号：US20140268312A1

    公开(公告)日：2014-09-18

    申请号：US13831541

    申请日：2013-03-14

    Applicant: ORACLE INTERNATIONAL CORPORATION

    Inventor： Xuezhe Zheng ,  Ashok V. Krishnamoorthy ,  Ivan Shubin ,  John E. Cunningham ,  Guoliang Li ,  Ying L. Luo

    IPC: H01S5/14

    CPC classification number: H01S5/1028 ,  H01S5/02252 ,  H01S5/1025 ,  H01S5/141 ,  H01S5/142 ,  H01S5/18 ,  H01S5/4087

    Abstract: A hybrid optical source that provides an optical signal having a wavelength is described. This hybrid optical source includes an edge-coupled optical amplifier (such as a III-V semiconductor optical amplifier) aligned to a semiconductor reflector (such as an etched silicon mirror). The semiconductor reflector efficiently couples (i.e., with low optical loss) light out of the optical amplifier in a direction approximately perpendicular to a plane of the optical amplifier. A corresponding optical coupler (such as a diffraction grating or a mirror) fabricated on a silicon-on-insulator chip efficiently couples the light into a sub-micron silicon-on-insulator optical waveguide. The silicon-on-insulator optical waveguide couples the light to additional photonic elements (including a reflector) to complete the hybrid optical source.

    Abstract translation: 描述了提供具有波长的光信号的混合光源。 该混合光源包括与半导体反射器（例如蚀刻硅镜）对准的边缘耦合光放大器（例如III-V半导体光放大器）。 半导体反射器在大致垂直于光放大器的平面的方向上有效地耦合（即，具有低光损耗）的光从光放大器中出射。 制造在绝缘体上硅芯片上的对应的光耦合器（例如衍射光栅或反射镜）有效地将光耦合到亚微米上绝缘体上的光波导中。 绝缘体上的光波导将光耦合到附加的光子元件（包括反射器）以完成混合光源。

    Hybrid integration of edge-coupled chips
    10.
    发明授权
    Hybrid integration of edge-coupled chips 有权

    公开(公告)号：US09618709B2

    公开(公告)日：2017-04-11

    申请号：US14060136

    申请日：2013-10-22

    Applicant: Oracle International Corporation

    Inventor： Xuezhe Zheng ,  Ivan Shubin ,  Ying Luo ,  Guoliang Li ,  Ashok V. Krishnamoorthy

    IPC: G02B6/42 ,  G02B6/14

    CPC classification number: G02B6/4224 ,  G02B6/00 ,  G02B6/14

    Abstract: A technique for fabricating a hybrid optical source is described. During this fabrication technique, a III-V compound-semiconductor active gain medium is integrated with a silicon-on-insulator (SOI) chip (or wafer) using edge coupling to form a co-planar hybrid optical source. Using a backside etch-assisted cleaving technique, and a temporary transparent substrate with alignment markers, a III-V compound-semiconductor chip with proper edge polish and coating can be integrated with a processed SOI chip (or wafer) with accurate alignment. This fabrication technique may significantly reduce the alignment complexity when fabricating the hybrid optical source, and may enable wafer-scale integration.

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