Planar-waveguide Bragg gratings in curved waveguides
    2.
    发明授权
    Planar-waveguide Bragg gratings in curved waveguides 有权
    曲面波导中的平面波导布拉格光栅

    公开(公告)号:US08731350B1

    公开(公告)日:2014-05-20

    申请号:US13609294

    申请日:2012-09-11

    CPC classification number: G02B6/124 G02B6/12007 G02B6/136

    Abstract: A method for forming planar-waveguide Bragg grating in a curved waveguide comprises: forming a long chirped planar-waveguide Bragg grating in an Archimedes' spiral such that a long length of the waveguide can fit in a small chip area where the grating is formed in the curved waveguide; using periodic width modulation to form the planar-waveguide Bragg grating on the curved waveguide, and where the formation of the periodic width modulation occurs during the etching of the waveguide core; using rectangular width modulation to create Bragg gratings with a higher order than 1st order to allow a larger grating period and larger modulation depth, using waveguide width tapering while keeping the width modulation period constant to introduce chirp to the planar-waveguide Bragg grating where the index of refraction is a function of waveguide width, by applying a specific width tapering to create a desired arbitrary chirp profile.

    Abstract translation: 用于在弯曲波导中形成平面波导布拉格光栅的方法包括:在阿基米德螺旋形成长啁啾平面波导布拉格光栅,使得波长的长度可以装配在形成光栅的小芯片区域中 弯曲波导; 使用周期宽度调制以在弯曲波导上形成平面波导布拉格光栅,并且其中在波导芯的蚀刻期间发生周期性宽度调制的形成; 使用矩形宽度调制产生具有比1级更高阶的布拉格光栅,以允许更大的光栅周期和更大的调制深度,使用波导宽度逐渐减小,同时保持宽度调制周期恒定,以将啁啾引入平面波导布拉格光栅,其中指数 的折射是波导宽度的函数,通过应用特定的宽度逐渐变细以产生期望的任意啁啾曲线。

    SURFACE-NORMAL OPTICAL COUPLING USING A HOLOGRAPHIC RECORDING MATERIAL
    4.
    发明申请
    SURFACE-NORMAL OPTICAL COUPLING USING A HOLOGRAPHIC RECORDING MATERIAL 有权
    使用全息记录材料进行表面正常光学耦合

    公开(公告)号:US20130265624A1

    公开(公告)日:2013-10-10

    申请号:US13440839

    申请日:2012-04-05

    Abstract: An integrated circuit includes a holographic recording material substantially filling a cavity in a semiconductor layer. During operation of the integrated circuit, a holographic pattern in the holographic recording is reconstructed and used to diffract an optical signal propagating in a plane of an optical waveguide, which is defined in the semiconductor layer out of the plane through the cavity. In this way, the holographic recording material may be used to couple the optical signal to an optical fiber or another integrated circuit.

    Abstract translation: 集成电路包括基本上填充半导体层中的空腔的全息记录材料。 在集成电路的操作期间,全息记录中的全息图被重构并用于将在半导体层中定义的光波导的平面中传播的光信号衍射出通过空腔的平面。 以这种方式,全息记录材料可以用于将光信号耦合到光纤或另一集成电路。

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