Lithium niobate planar and ridge waveguides fabricated by 3 MeV oxygen ion implantation and precise diamond dicing

Autor: Xueshuai Jiao, Su-Mei Wang, Jinhua Zhao, Jin-Jun Gu, Lei Wang, Ming-Yang Bu, Yingying Ren
Rok vydání: 2021
Předmět:
Zdroj: Chinese Optics Letters. 19:060009
ISSN: 1671-7694
DOI: 10.3788/col202119.060009
Popis: We report on the fabrication and optimization of lithium niobate planar and ridge waveguides at the wavelength of 633 nm. To obtain a planar waveguide, oxygen ions with an energy of 3.0 MeV and a fluence of 1.5×1015 ions/cm2 are implanted in the polished face of LiNbO3 crystals. For planar waveguides, a loss of 0.5 dB/cm is obtained after annealing at 300°C for 30 min. The ridge waveguide is fabricated by the diamond blade dicing method on optimized planar waveguides. The guiding properties are investigated by prism coupling and end-face coupling methods.
Databáze: OpenAIRE