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Ridged LiNbO _{3} Waveguide Fabricated By a Novel Wet Etching/MeV Oxygen Ion Implantation Method

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3 Author(s)
Wang, Lei ; Sch. of Phys., Shandong Univ., Jinan, China ; Jin-Hua Zhao ; Gang Fu

We report on a new wet etching/ion implantation method for fabricating ridge waveguide on z -cut LiNbO3. The ridge structures are produced on LiNbO3 crystal by anisotropic wet etching via minus z face. Mode guiding at wavelength of 632.8 nm has been realized by using direct 4.5 MeV oxygen implantation without any implantation mask. The ridge waveguide shows a reduced propagation loss of 1.3 dB/cm after the thermal annealing process.

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Lightwave Technology, Journal of  (Volume:28 ,  Issue: 9 )