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Article Dans Une Revue Journal of Optics A: Pure and Applied Optics Année : 2008

A novel approach for the analysis of distributed partially proton-exchanged Ti:LiNbO3 waveguides

Résumé

Proton exchange is becoming widely accepted as a complementary technique to titanium indiffusion for the fabrication of optical waveguides on LiNbO3. In this paper, we propose, for the first time to our knowledge, a novel approach to analyze optical distributed waveguides formed by local index variation, combining two processes, titanium (Ti) indiffusion, and localized proton exchange (PE), yielding the distributed parameter waveguides. We present a straightforward extension of the ray-approximation method (RAM) covering the computation of a single diffusion effective index, as well as multiple successive diffusions with a specific graded index profile. The efficiency of the method is shown by varying some of the optical distributed waveguide parameters, such as the index modulation or the proton-exchanged depth. The simulation results in particular show that the evolution of the transmission spectrum is in good agreement with previous experimental results

Dates et versions

hal-01372486 , version 1 (27-09-2016)

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Georges Bou Abboud, Badr-Eddine Benkelfat, Nicolas Grossard, Qin Zou. A novel approach for the analysis of distributed partially proton-exchanged Ti:LiNbO3 waveguides. Journal of Optics A: Pure and Applied Optics, 2008, 10 (5), pp.055306-1 - 055306-8. ⟨10.1088/1464-4258/10/5/055306⟩. ⟨hal-01372486⟩
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