Aging and structure-change processes in proton-exchange waveguides in lithium niobate crystals

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Аuthors

Zhundrikov A. V., Kichigin V. I., Petukhov I. V., Shevtsov D. I.

Perm State University,

Abstract

Time variations of the refraction index of proton-exchanged guiding layers on lithium niobate (X cut), which reflect slow aging (stabilization) processes in waveguides, were studied by mode spectroscopy technique. Structural changes in channel proton-exchanged waveguides after long-term stabilization (3 years) were studied by wet chemical etching of proton-exchanged layers and 3D profilometry.

Keywords:

optical waveguide, lithium niobate, proton, exchange, aging of proton-exchanged waveguides.


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