Optical demultiplexor

Details Optical demultiplexor Optical demultiplexor

1995-10-31

1998-09-15

Bacares, Rafael

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359131, 359129, H04J 1402

Patent

active

058087630

ABSTRACT:
An optical demultiplexor utilizes a single optical interference filter disposed between an input end and an output end of the device. The filter is preferably housed within a cavity in a glass block having an upstanding input end, endwall. The optical filter is a wavelength selective means having a wavelength characteristic dependent upon an angle of incidence. The device has a plurality of reflective surfaces disposed at the input end for reflecting light reflected from the filter, back to the filter at different predetermined angles. Each different predetermined incident angle allows a different predetermined wavelength of light to pass through the filter to an output end being spatially separated from other predetermined wavelengths that pass through the filter. The reflective surfaces are preferably formed in the upstanding endwall of the glass block. Sixteen channels can be separated by this demultiplexor.

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patent: 4836634 (1989-06-01), Laude
patent: 5107359 (1992-04-01), Ohuchida
patent: 5583683 (1996-12-01), Scobey

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