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Stable Proton Exchanged Waveguides in Lithium Tantalate

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4 Author(s)
Busacca, A.C. ; Dipt. di Ing. Elettr., Univ. of Palermo, Palermo ; D'Asaro, E. ; Sanseverino, S.R. ; Assanto, G.

alpha, beta1, and kappa2 phases are investigated for planar waveguide fabrication by proton exchange in congruent lithium tantalate. The effective indices of planar waveguide eigenmodes were monitored over time, revealing that the exchange process induces aging instabilities in all phases except alpha .

Published in:

Photonics Technology Letters, IEEE  (Volume:20 ,  Issue: 24 )