Citation
Jubera, M. and Villarroel, J. and García Cabañes, A. and Carrascosa, M. and Olivares, J. and Agullo Lopez, Fernando and Mendez Jaque, Angel and Ramiro Diaz, Jose Bruno
(2012).
Analysis and optimization of propagation losses in LiNbO3 optical waveguides produced by swift heavy-ion irradiation.
"App Phys B", v. 107
(n. 1);
pp. 157-162.
ISSN 1432-0649.
https://doi.org/10.1007/s00340-012-4897-9.
Abstract
The propagation losses (PL) of lithium niobate optical planar waveguides fabricated by swift heavy-ion irradiation (SHI), an alternative to conventional ion implantation, have been investigated and optimized. For waveguide fabrication, congruently melting LiNbO3 substrates were irradiated with F ions at 20 MeV or 30 MeV and fluences in the range 1013–1014 cm−2. The influence of the temperature and time of post-irradiation annealing treatments has been systematically studied. Optimum propagation losses lower than 0.5 dB/cm have been obtained for both TE and TM modes, after a two-stage annealing treatment at 350 and 375∘C. Possible loss mechanisms are discussed.
