Optical device including buried optical waveguides and output couplers

    公开(公告)号:US10996408B2

    公开(公告)日:2021-05-04

    申请号:US16517159

    申请日:2019-07-19

    Abstract: Embodiments of the present disclosure are directed toward techniques and configurations for an optical coupler including an optical waveguide to guide light to an optical fiber. In embodiments, the optical waveguide includes a tapered segment to propagate the received light to the optical fiber. In embodiments, the tapered segment is buried below a surface of a semiconductor substrate to transition the received light within the semiconductor substrate from a first optical mode to a second optical mode to reduce a loss of light during propagation of the received light from the optical waveguide to the optical fiber. In embodiments, the surface of the semiconductor substrate comprises a bottom planar surface of a silicon photonic chip that includes at least one or more of passive or active photonic components. Other embodiments may be described and/or claimed.

    POLYMER OPTICAL COUPLER
    7.
    发明申请

    公开(公告)号:US20190041582A1

    公开(公告)日:2019-02-07

    申请号:US15980103

    申请日:2018-05-15

    Abstract: Embodiments may relate to a polymer optical coupler. The polymer optical coupler may include a first portion at least partially coupled to a face of a silicon waveguide. The polymer optical coupler may further include a second portion of the polymer optical coupler that is adjacent to the first portion and which may have a width that is less than a width of the second portion opposite the first portion. Other embodiments may be described and/or claimed.

    Solid state LIDAR circuit with waveguides tunable to separate phase offsets
    8.
    发明授权
    Solid state LIDAR circuit with waveguides tunable to separate phase offsets 有权
    具有波导的固态LIDAR电路可调谐以分离相位偏移

    公开(公告)号:US09575341B2

    公开(公告)日:2017-02-21

    申请号:US14318604

    申请日:2014-06-28

    Abstract: A solid state photonics circuit having a liquid crystal (LC) layer for beam steering. The LC layer can provide tuning of an array of waveguides by controlling the application of voltage to the liquid crystal. The application of voltage to the liquid crystal can be controlled to perform beam steering with the light signal based on different tuning in each of the waveguides of the array. The waveguides are disposed in a substrate having an oxide or other insulating layer with an opening. The opening in the oxide layer exposes a portion of a path of the array of waveguides. The waveguides are exposed to the liquid crystal through the oxide opening, which allows the voltage changes to the liquid crystal to tune the optical signals in the waveguides.

    Abstract translation: 一种具有用于光束转向的液晶(LC)层的固态光子电路。 LC层可以通过控制对液晶的电压施加来提供波导阵列的调谐。 可以控制对液晶的电压施加,使用基于在阵列的每个波导中的不同调谐的光信号进行光束转向。 波导设置在具有开口的氧化物或其它绝缘层的基板中。 氧化物层中的开口暴露波导阵列的路径的一部分。 波导通过氧化物开口暴露于液晶,这允许液晶的电压改变以调谐波导中的光信号。

    Vertical mirror in a silicon photonic circuit
    9.
    发明授权
    Vertical mirror in a silicon photonic circuit 有权
    硅光子电路中的垂直镜

    公开(公告)号:US08803268B2

    公开(公告)日:2014-08-12

    申请号:US13871083

    申请日:2013-04-26

    CPC classification number: H01L31/02327 G02B6/4214

    Abstract: A vertical total internal reflection (TIR) mirror and fabrication thereof is made by creating a re-entrant profile using crystallographic silicon etching. Starting with an SOI wafer, a deep silicon etch is used to expose the buried oxide layer, which is then wet-etched (in HF), opening the bottom surface of the Si device layer. This bottom silicon surface is then exposed so that in a crystallographic etch, the resulting shape is a re-entrant trapezoid with facets These facets can be used in conjunction with planar silicon waveguides to reflect the light upwards based on the TIR principle. Alternately, light can be coupled into the silicon waveguides from above the wafer for such purposes as wafer level testing.

    Abstract translation: 垂直全内反射(TIR)镜及其制造是通过使用晶体硅蚀刻创建入门轮廓而制成的。 从SOI晶片开始,使用深硅蚀刻来暴露掩埋氧化物层,然后将其湿法蚀刻(在HF中),打开Si器件层的底表面。 然后将该底部硅表面暴露,使得在晶体刻蚀中,所得到的形状是具有刻面的重入梯形。这些刻面可以与平面硅波导结合使用以基于TIR原理向上反射光。 或者,光可以从晶片上方耦合到硅波导中,用于诸如晶片级测试的目的。

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