Title :
Anamorphic Microlens Coupling Between Tapered Amplifier and Planar PPLN Waveguide
Author :
Matsuzawa, Hirofumi ; Sakai, Kiyohide ; Itakura, Shigetaka ; Akiyama, Tomohiro ; Hirano, Yoshihito
Author_Institution :
Inf. Technol. R&D Center, Mitsubishi Electr. Corp., Kamakura, Japan
Abstract :
We designed an aspheric anamorphic microlens for coupling between a tapered amplifier with a length of 3 mm and a planar-waveguide second-harmonic-generation device consisting of a periodically poled MgO-doped lithium niobate crystal core with a thickness of 3 μm. A coupling efficiency of 35% and corresponding green light generation with a power of 65 mW and conversion efficiency of 7.4% was experimentally demonstrated.
Keywords :
aspherical optics; lithium compounds; magnesium compounds; microlenses; optical harmonic generation; optical planar waveguides; semiconductor optical amplifiers; LiNbO:MgO; aspheric anamorphic microlens; conversion efficiency; coupling efficiency; efficiency 35 percent; efficiency 7.4 percent; green light generation; periodically poled MgO-doped lithium niobate crystal; planar PPLN waveguide; planar-waveguide second-harmonic-generation device; power 65 mW; size 3 mum; tapered amplifier; Couplings; Lenses; Microoptics; Optical fiber amplifiers; Planar waveguides; Waveguide lasers; Lenses; optical coupling; optical harmonic generation; semiconductor lasers;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2011.2177818
