Low-loss single-mode integrated waveguides in soda-lime glass

• Published in: Applied physics. B, Lasers and optics Vol. 122; no. 9; pp. 1 - 7
• Main Authors: Dyakonov, I. V., Kalinkin, A. A., Saygin, M. Yu, Abroskin, A. G., Radchenko, I. V., Straupe, S. S., Kulik, S. P.
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01-09-2016; Springer Nature B.V
• Subjects: Applied physics; Beams (radiation); Bending; Cross sections; Engineering; Femtosecond; Lasers; Optical Devices; Optics; Photonics; Physical Chemistry; Physics; Physics and Astronomy; Quantum Optics; Slits; Soda-lime glass; Wave propagation; Waveguides; Refractive Index Change; Integrate Optical Device; Arrayed Waveguide Grating; Coupling Loss; Waveguide Cross Section
• ISSN: 0946-2171; 1432-0649
• DOI: 10.1007/s00340-016-6520-y

Low-loss single-mode optical waveguide fabrication process in extra-white soda-lime glass is demonstrated. Waveguiding structures are formed in bulk substrates employing femtosecond laser writing technology. The combination of a slit beam shaping method and a multiscan fabrication process enables writing of waveguides with a well-defined symmetric cross-sectional profile. Fabricated waveguides exhibit 0.86 dB/cm propagation loss for 800-nm wavelength. Bending loss in the waveguides is addressed experimentally and compared with a model for radiation loss.