Optical system and method for performing analog to digital conversion
    2.
    发明授权
    Optical system and method for performing analog to digital conversion 有权
    用于执行模数转换的光学系统和方法

    公开(公告)号:US06801147B2

    公开(公告)日:2004-10-05

    申请号:US10074199

    申请日:2002-02-12

    IPC分类号: H03M100

    CPC分类号: H03M1/32 G02F7/00

    摘要: An opto-electronic A/D converter includes a tunable laser for wavelength modulating a narrowband coherent electromagnetic beam by the amplitude of the analog signal. A grating transforms the wavelength modulated beam into a corresponding angularly modulated beam. A set of kinoforms diffract the angularly modulated beam into a bundle of diffracted beams. Detectors determine the digital signal by repeatedly sampling the spatial power distribution of the diffracted beams.

    摘要翻译: 光电A / D转换器包括可调谐激光器,用于通过模拟信号的幅度对窄带相干电磁波进行波长调制。 光栅将波长调制光束变换成相应的角度调制光束。 一组kinoforms将角度调制的光束衍射成一束衍射光束。 检测器通过重复采样衍射光束的空间功率分布来确定数字信号。