Planar optical waveguide in SrTiO3 crystal fabricated by carbon ion irradiation


Planar optical waveguide in SrTiO3 crystal fabricated by carbon ion irradiation

He, R.; Sun, S.; Xu, M.; Chen, F.; Akhmadaliev, S.; Zhou, S.

We report on the planar waveguide fabrication in SrTiO3 crystal by using carbon ion irradiation at energy of 15 MeV. The reconstructed refractive index profile of the waveguide shows the “barrier”-like distribution. The planar waveguide supports guidance along both of the TE and TM polarizations. The near-field mode distribution of the waveguide shows reasonable agreement with the simulated modal profile. After thermal annealing treatment at 260 °C in air, the propagation loss of waveguide is reduced to as low as 0.8 dB/cm.

Keywords: Optical waveguide; Ion irradiation; SrTiO3 crystal

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Permalink: https://www.hzdr.de/publications/Publ-18800
Publ.-Id: 18800