Bragg reflector waveguide and electro-optic modulator based on barium titanate epitaxial thin films

Zhifu Liu*, Pao Tai Lin, Bruce W. Wessels

*Corresponding author for this work

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


We report the nanofabrication of Bragg reflector waveguide structure based on a barium titanate (BTO) epitaxial thin film grown on MgO substrate and characterized its optical transmission. Low pressure nano-lithography was used for the formation of Bragg reflector waveguide structure. We demonstrate that there is sufficient refractive index contrast to form a well-defined stop band by forming gratings in a top strip layer of Si3N4 that was grown on BaTiO3 (BTO) thin film. Simulations of the optical transmission and stop band of TE mode, and electro-optic (EO) modulator tunability are also discussed. The non-linear photonic crystal waveguides are potentially suitable as tunable optical filters and ultra-wide bandwidth modulators.

Original languageEnglish (US)
Title of host publicationMaterials Research Society Symposium Proceedings - Three-Dimensional Nano- and Microphotonics
PublisherMaterials Research Society
Number of pages5
ISBN (Print)9781605604190
StatePublished - 2007
EventThree-Dimensional Nano- and Microphotonics - San Francisco, CA, United States
Duration: Apr 9 2007Apr 13 2007

Publication series

NameMaterials Research Society Symposium Proceedings
ISSN (Print)0272-9172


OtherThree-Dimensional Nano- and Microphotonics
Country/TerritoryUnited States
CitySan Francisco, CA

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering


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