Low-loss electrooptic BaTiO3 thin film waveguide modulator

Pingsheng Tang*, D. J. Towner, Anthony L. Meier, B. W. Wessels

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

37 Scopus citations


A strip-loaded electrooptic waveguide modulator based on an epitaxial BaTiO3 thin film was fabricated and characterized for the first time. The strip-loaded waveguide structure greatly improves waveguide propagation and polarization-dependent loss performance. A propagation loss of 1.1 dB/cm and polarization dependent loss of 0.1 dB/cm were measured. The electrooptic waveguide modulator exhibited a half-wave voltage-interaction length product of 4.5 V · cm at a wavelength of 1542 nm. The measured effective electrooptic coefficient of the as-grown BaTiO3 waveguide modulator was 38 pm/V. The experimental results indicate that a strip-loaded thin film waveguide modulator is suitable for photonic applications.

Original languageEnglish (US)
Pages (from-to)1837-1839
Number of pages3
JournalIEEE Photonics Technology Letters
Issue number8
StatePublished - Aug 2004

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering


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