Optical performance of Bragg gratings fabricated in Ti:LiNbO3 waveguides by focused Ion beam milling - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Journal of Lightwave Technology Année : 2010

Optical performance of Bragg gratings fabricated in Ti:LiNbO3 waveguides by focused Ion beam milling

Résumé

In this paper we propose an efficient technique for micromachining lithium niobate that is used in Ti-diffused waveguides. The use of Focused Ion Beam (FIB) etching allows obtaining homogeneous periodic microstructures. Bragg gratings with a period of 1.05 mu m and an aspect ratio of 6:1 (depth-to-half period ratio) have been achieved. A reflectivity greater than 95% associated with a bandwidth at half maximum of about 100 nm within a window centered at 1550 nm, is demonstrated for a Bragg grating of period Lambda = 1.8 mu m and a length of 144 mu m, in good agreement with theoretical predictions.
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hal-00583018 , version 1 (17-04-2021)

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Kamal Ghoumid, Richard Ferriere, Badr-Eddine Benkelfat, Brahim Guizal, Tijani Gharbi. Optical performance of Bragg gratings fabricated in Ti:LiNbO3 waveguides by focused Ion beam milling. Journal of Lightwave Technology, 2010, 28 (23), pp.3488-3493. ⟨10.1109/JLT.2010.2080258⟩. ⟨hal-00583018⟩
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