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    • 4. 发明申请
    • Holographic demultiplexor
    • 全息解复用器
    • US20040051868A1
    • 2004-03-18
    • US10243305
    • 2002-09-13
    • Mina Farr
    • G01J003/14G01J003/18
    • G02B5/203G01J3/14G01J3/18G02B5/32H04Q2011/0028
    • A holographic demultiplexor for filtering and spatially positioning individual optical channels, wavelengths, or sets of wavelengths. The holographic demultiplexor includes a volume hologram that includes holograms for redirecting wavelengths included in a light signal. A diffraction grating linearly disperses the light signal and the individual holograms included in the volume hologram spatially reflect the one or more wavelengths back to the diffraction grating as specific angles. The volume hologram spatially reflects the one or more wavelengths such that they are dispersed in two dimensions. The diffraction grating then reflects the two dimensionally dispersed wavelengths to a two dimensional detector array. The detectors of the detector array for adjacent wavelengths can be interleaved to reduce interference. Alternatively, the volume hologram can redirect sets of wavelengths directly to the detector array and the light is not linearly dispersed by a diffraction grating first.
    • 全息解复用器,用于对各个光通道,波长或波长组进行滤波和空间定位。 全息解复用器包括体积全息图,其包括用于重定向包括在光信号中的波长的全息图。 衍射光栅线性地分散光信号,并且包含在体积全息图中的各个全息图空间地将一个或多个波长反射回衍射光栅作为特定角度。 体积全息图在空间上反映一个或多个波长,使得它们分散在二维中。 衍射光栅然后将二维分散的波长反射到二维检测器阵列。 用于相邻波长的检测器阵列的检测器可以交错以减少干扰。 或者,体积全息图可以将波长的组直接重定向到检测器阵列,并且光不首先由衍射光栅线性地分散。