Highly Confining Proton Exchanged Waveguides on Z-Cut LiNbO3 With Preserved Nonlinear Coefficient

• Published in: IEEE photonics technology letters Vol. 26; no. 15; pp. 1557 - 1560
• Main Authors: Stepanenko, Oleksandr, Quillier, Emmanuel, Tronche, Herve, Baldi, Pascal, De Micheli, Marc
• Format: Journal Article
• Language: English
• Published: New York IEEE 01.08.2014; The Institute of Electrical and Electronics Engineers, Inc. (IEEE); Institute of Electrical and Electronics Engineers
• Subjects: Indexes; Lithium niobate; Nonlinear optics; Optical device fabrication; Optical waveguides; Optics; Physics; Protons; nonlinear optics; optical planar waveguides; fabrication; Dielectric waveguides; lithium compounds •optical fabrication •optical harmonic generation •optical planar waveguides

We propose a new proton exchange process to reproducibly realize on lithium niobate highly confining (δn e = 0.1) planar waveguides without degrading the nonlinear coefficient of the crystal. Waveguides were fabricated with different acidic baths and the crystallographic changes, the index profiles...