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...http://www.google.fr/patents/US6778270?utm_source=gb-gplus-shareBrevet US6778270 - Holographic demultiplexor
