Interferometric polarization-independent modulator in LiTaO/sub 3/ Academic Article uri icon


  • Polarization-independent Mach-Zehnder modulators that utilize the off-diagonal r51 electrooptic coefficient have been produced in LiTaO3. The waveguides are formed by Zn vapor diffusion. Extinction values of 85% at 0.633-μm wavelength have been demonstrated for both TE and TM polarizations using a single control voltage and thermal tuning. The relatively large voltage-length product values (VL ≥ 15 V-cm) attained in these initial devices is attributed to a weak overlap between optical and electrical field profiles. Electrode alignment and dielectric loading are critical factors for the optimization of device operation. © 1990 IEEE

altmetric score

  • 3

author list (cited authors)

  • Jung, H., Taylor, H. F., & Eknoyan, O.

citation count

  • 5

publication date

  • January 1990