ELECTROOPTIC MODULATION AND SELF-POLING IN STRAIN-INDUCED WAVE-GUIDES IN BARIUM STRONTIUM-TITANATE NIOBATE Academic Article uri icon

abstract

  • Characterization of bulk single crystals and optical waveguides in Ba1-xSrxTiyNb2-yO6(BSTN) indicate it to be a promising new ferroelectric material for electrooptic devices. The electro-optic coefficient r33is measured to be 21812 pm/V, a factor of 7 greater than LiNbO3. Data on refractive indices, dielectric constant, and Curie temperature Tcin bulk samples are also presented. Strain-induced waveguides in Z-cut samples exhibited low losses (1.8 dB/cm for TM polarization and 2.5 dB/cm for TE polarization) at a wavelength of 1.3 m. Electro-optic modulation was demonstrated in these waveguides to frequencies >100 MHz. A "self-poling" effect was found, whereby strong electro-optic modulation is observed in the strain waveguides without repoling the crystal after processing at temperatures far above Tc. 1995 American Institute of Physics.

published proceedings

  • APPLIED PHYSICS LETTERS

author list (cited authors)

  • MARX, J. M., EKNOYAN, O., TAYLOR, H. F., TANG, Z., & NEURGAONKAR, R. R.

citation count

  • 19

complete list of authors

  • MARX, JM||EKNOYAN, O||TAYLOR, HF||TANG, Z||NEURGAONKAR, RR

publication date

  • January 1995