A plasmonic modulator based on metal-insulator-metal waveguide with barium titanate core


  • Viktoriia E. Babicheva DTU Fotonik, Technical University of Denmark
  • Andrei V. Lavrinenko DTU Fotonik, Technical University of Denmark




We design a plasmonic modulator which can be utilized as a compact active device in photonic integrated circuits. The active material, barium titanate (BaTiO3), is sandwiched between metal plates and changes its refractive index under applied voltage. Some degree of switching of ferroelectric domains from the in-plane to out-of-plane orientation provides the change of the refractive index, which can be exploited for effective light modulation. By numerical analysis we prove that the π phase change can be achieved with a 12…15 μm length device having propagation losses 0.05…0.2 dB/μm.

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How to Cite

V. E. Babicheva and A. V. Lavrinenko, “A plasmonic modulator based on metal-insulator-metal waveguide with barium titanate core”, Photonics Lett. Pol., vol. 5, no. 2, pp. pp. 57–59, Jun. 2013.