Hexagonal photonic crystal waveguide based on barium titanate thin films

Jianheng Li, Zhifu Liu, Bruce W Wessels, Yongming Tu, Seng-Tiong Ho, Alexandra Joshi-Imre, Leonidas E. Ocola

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations


The simulation, fabrication and measurement of nonlinear photonic crystals (PhCs) with hexagonal symmetry in epitaxial BaTiO3 were investigated. The optical transmission properties of a PhC were simulated by a 2-D finite-difference time domain (FDTD) method. A complete bandgap exists for both the TE and TM optical modes. The fabricated PhC has a well-defined stop band over the spectral region of 1525 to 1575 nm. A microcavity structure was also fabricated by incorporation of a line defect in the PhC. Transmission of the microcavity structure over the spectral region from 1456 to 1584nm shows a well-defined 5 nm wide window at 1495nm. Simulations indicate that the phase velocity matched PhC microcavity device of 0.5 mm long can potentially serve as modulator with a 3 dB bandwidth of 4 THz.

Original languageEnglish (US)
Title of host publicationOptical Components and Materials VIII
StatePublished - May 2 2011
EventOptical Components and Materials VIII - San Francisco, CA, United States
Duration: Jan 25 2011Jan 26 2011


OtherOptical Components and Materials VIII
Country/TerritoryUnited States
CitySan Francisco, CA


  • Bandgap
  • EO modulator
  • Hexagonal PhC

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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