Two compact structures for perpendicular coupling of optical signals between dielectric and photonic crystal waveguides

Michael E. Potter, Richard W. Ziolkowski

Research output: Contribution to journalArticlepeer-review

23 Scopus citations

Abstract

Two structures are analyzed with numerical modeling as candidates for perpendicular coupling of optical signals from a dielectric waveguide to a photonic bandgap (PBG) waveguide. The first consists of a perfectly electric conducting (PEC) grating and PBG mirror to couple power out of the dielectric waveguide, along with a circular-like lens to couple that power into the PBG waveguide. The second consists of a slanted inline fiber Bragg grating to couple power out of the dielectric waveguide, and a graded-index (GRIN) lens to couple that power into the PBG waveguide. Power transfer efficiencies of 50% and 71%, respectively, are reported. Such structures would be useful in WDM applications, and/or where circuit real estate restrictions demand coupling perpendicular to the dielectric guide over small distances.

Original languageEnglish (US)
Pages (from-to)691-698
Number of pages8
JournalOptics Express
Volume10
Issue number15
DOIs
StatePublished - Jul 2002

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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