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Photonic crystal-based optical elements for integrated circuits and methods therefor

  • US 7,418,161 B2
  • Filed: 06/22/2004
  • Issued: 08/26/2008
  • Est. Priority Date: 06/22/2004
  • Status: Expired due to Fees
First Claim
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1. An optical device comprising:

  • a substrate; and

    a photonic crystal optical interconnect comprising;

    a first cladding layer over the substrate;

    a photonic crystal layer over the first cladding layer, the photonic crystal layer comprising at least one photonic crystal element comprising a plurality of pillars being spaced apart from each other; and

    a second cladding layer over the photonic crystal layer, wherein the pillars do not extend into the second cladding layer,wherein the photonic crystal element comprises a first region having a first photonic crystal structure, a second region having a second different photonic crystal structure, and a third region having a third photonic crystal structure different from that of the first region and the second region, wherein the difference in photonic crystal structure among the three regions is based on a difference in pillar characteristics including at least a difference in pillar shape or size, said photonic crystal element forming a wavelength filter for the interconnect.

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