Theoretical Estimation of Refractive Index of Continuous Wave UV Induced Waveguide in LiNbO Considering Temperature Dependent Absorption Coefficient

A theoretical modeling of continuous wave UV laser induced waveguides in congruent LiNbO 3 is presented considering temperature dependent absorption coefficients at 305 nm and 275 nm writing wavelengths. The extrapolated empirical relations of absorption coefficient with temperature, extracted from...

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Bibliographic Details
Published in:Journal of lightwave technology 2013-08, Vol.31 (16), p.2728-2734
Main Authors: Ghosh, Tapas, Samanta, Bidyut, Jana, Paresh Chandra, Ganguly, Pranabendu
Format: Article
Language:English
Subjects:
Absorption
Absorption coefficient
CW UV-written waveguide
Li-diffusion
LiNbO _{3}
Lithium niobate
Optical waveguides
refractive index distribution
Temperature distribution
temperature profile
Waveguide lasers
Writing
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Summary:A theoretical modeling of continuous wave UV laser induced waveguides in congruent LiNbO 3 is presented considering temperature dependent absorption coefficients at 305 nm and 275 nm writing wavelengths. The extrapolated empirical relations of absorption coefficient with temperature, extracted from the published experimental data, is used for the purpose. Some of the previously published experimental findings of the fabricated waveguides are justified with this model, which otherwise seem impossible.
ISSN:0733-8724
1558-2213
DOI:10.1109/JLT.2013.2272997