Electro-Optically Tunable ${
m As}_{2}{
m S}_{3}$
Mach–Zehnder Interferometer on ${
m LiNbO}_{3}$
Substrate Academic Article uri icon


  • An electro-optically tunable vertically integrated As 2S 3 Mach-Zehnder interferometer side coupled to a Ti-diffused waveguide on LiNbO 3 substrate was designed and fabricated. Asymmetric coplanar strip electrodes were placed along the As 2S 3 path, which show strong electro-optic tuning capability, shifting the FSR of the interferometer. The tuning of the TM polarization with 7-mm-long electrodes having a 7-μm gap was observed with V πL=15.9 V-cm, giving a tuning rate of 0.028 nm/V at 1530 nm. To our knowledge, this is the first demonstration of electro-optic tuning of an As 2S 3 guided mode on LiNbO 3 substrate. © 2012 IEEE.

author list (cited authors)

  • Snider, W. T., Macik, D. D., & Madsen, C. K.

citation count

  • 5

publication date

  • July 2012