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Waveguide-based bragg gratings with spectral sidelobe suppression and method thereof

  • US 20040001671A1
  • Filed: 07/01/2002
  • Published: 01/01/2004
  • Est. Priority Date: 07/01/2002
  • Status: Active Grant
First Claim
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1. An apparatus, comprising:

  • a substrate; and

    a plurality of regions formed in the substrate, the plurality of regions having refractive indices different from that of the substrate, the plurality of regions and intervening areas of the substrate forming a grating, the grating having a plurality of grating periods with substantially constant pitch, wherein each grating period of the plurality of grating periods includes a region of the plurality of regions, the plurality of regions having regions of at least two different widths.

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