Karasiński, Paweł, Cuma Tyszkiewicz, and Roman Rogoziński. “Rib Waveguides Based on the Sol-Gel Derived SiO2 :TiO2 Films”. Photonics Letters of Poland 2, no. 1 (March 31, 2010): pp. 40–42. Accessed April 30, 2024. https://photonics.pl/PLP/index.php/letters/article/view/2-14.