Systems, methods and devices for holographic demultiplexing...

Details Systems, methods and devices for holographic demultiplexing... Systems, methods and devices for holographic demultiplexing...

2005-12-20

2005-12-20

Evans, F. L. (Department: 2877)

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

C356S328000

Reexamination Certificate

active

06977726

ABSTRACT:
Systems, methods and devices for holographic demultiplexing of optical signals that include constituent light signals of different wavelengths. A holographic demultiplexor includes a volume hologram having holograms for redirecting the constituent light signals. A dispersion element linearly disperses the optical signal, and the individual holograms of the volume hologram spatially reflect the constituent light signals back to the dispersion member at specific angles. The volume hologram spatially reflects the constituent light signals such that they are dispersed in two dimensions. The dispersion element then reflects the two dimensionally dispersed wavelengths to a two dimensional detector array.

REFERENCES:
patent: 4820048 (1989-04-01), Barnard
patent: 5315423 (1994-05-01), Hong
patent: 5329384 (1994-07-01), Setani et al.

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