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Miniature monolithic optical demultiplexer

  • US 6,496,616 B2
  • Filed: 03/13/2001
  • Issued: 12/17/2002
  • Est. Priority Date: 04/28/2000
  • Status: Expired due to Fees
First Claim
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1. A miniature monolithic optical demultiplexer, comprising:

  • a monolithic substrate;

    a wavelength dispersive optical element fabricated on said monolithic substrate, said wavelength dispersive optical element receiving an input beam having a plurality of spatially overlapping distinct colors and providing an output signal composed of a plurality of spatially separated substantially single-color beams, each substantially single-color beam having a primary wavelength that is different than the primary wavelengths of the other substantially single-color beams; and

    a wavelength filter array fabricated on said monolithic substrate and having at least one filter element, said at least one filter element receiving a selected one of said plurality of spatially separated substantially single-color optical beams and removing therefrom any portions of beams of other primary wavelengths that were separated incompletely from the selected beam by the wavelength dispersive optical element, thereby providing a purified single-color output beam substantially free of colors associated with other primary wavelengths.

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