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    Optical mode filter
    1.
    发明授权
    Optical mode filter 失效
    光模式滤波器

    公开(公告)号：US5745614A

    公开(公告)日：1998-04-28

    申请号：US715416

    申请日：1996-09-18

    申请人： Peter Kersten ,  Johannes Koppenborg ,  Jaakko Aarnio

    发明人： Peter Kersten ,  Johannes Koppenborg ,  Jaakko Aarnio

    IPC分类号： G02B6/126 ,  G02B6/14

    CPC分类号： G02B6/14

    摘要： An optical mode filter, that is, an optical component in which the basic mode can propagate undamped as much as possible but which in higher modes are strongly damped. The optical mode filter, is an integrated optical wave guide formed by, a higher-refracting or an absorbent material disposed near a flat wave guide core. Two buffer layers are located opposite the wave guide core, and one is formed with a thinned region to function as a filter for higher modes being transmitted through the wave guide core.

    摘要翻译： 光模式滤波器，即其中基本模式可以尽可能无阻碍地传播的光学部件，但是在较高模式下是强阻尼的光学部件。 光模式滤波器是由设置在平坦波导芯附近的较高折射或吸收材料形成的集成光波导。 两个缓冲层位于与波导芯相对的位置，一个缓冲层形成有一个减薄区域，用作过滤器，用于通过波导芯传输更高的模式。

    Inverse fourier transform method, phase characterization method of optical components from transmission and group delay measurements as well as a system for performing the method
    2.
    发明授权
    Inverse fourier transform method, phase characterization method of optical components from transmission and group delay measurements as well as a system for performing the method 有权
    反向傅立叶变换方法，来自传输和组延迟测量的光学部件的相位表征方法以及用于执行该方法的系统

    公开(公告)号：US07200630B2

    公开(公告)日：2007-04-03

    申请号：US10424758

    申请日：2003-04-29

    申请人： José Antonio Lázaro Villa ,  Johannes Koppenborg ,  Rudolf Wessel

    发明人： José Antonio Lázaro Villa ,  Johannes Koppenborg ,  Rudolf Wessel

    IPC分类号： G06F15/00 ,  G01R13/00

    CPC分类号： G01M11/331 ,  G01M11/30

    摘要： A new method for characterizing the amplitude and phase distributions of the light propagating through arrayed-waveguide gratings is presented. The new method is based on the IFT. A very good agreement of the results obtained from the IFT method in comparison with OLC method has been achieved. The new method has been applied to an AWG with a small ΔL of 22 μm where the other methods fail. The precision of this measurement is demonstrated by a good agreement between the transmittance obtained from direct measurement and from calculation using the amplitude and phase distributions. Finally we want to point out, that although the results are based on a FTS measurement, the method can be applied to any experimental technique that provides a measurement of the complex transmittance of the AWG.

    摘要翻译： 提出了一种用于表征通过阵列波导光栅传播的光的幅度和相位分布的新方法。 新方法基于IFT。 与OLC方法相比，IFT方法获得的结果非常符合。 这种新方法已经应用于AWG，具有22 mum的小DeltaL，其他方法失败。 该测量的精度通过从直接测量获得的透射率与使用振幅和相位分布的计算之间的良好一致性来证明。 最后，我们想指出，虽然结果是基于FTS测量，但是该方法可以应用于提供AWG的复透射率测量的任何实验技术。