Out-of-phase properties of optical-waveguide Bragg-grating lenses caused by the linearly approximated grating lines and by mismatching of the propagation vectors of guided waves were theoretically investigated with a coupled-wave analysis. Two types of lens with straight and parabolic grating lines were fabricated by photolithography. Agreement of the experimental results with the theory enabled us to design a lens with the required properties.
© 1984 Optical Society of America
Original Manuscript: August 25, 1983
Published: June 1, 1984
Shun-ichi Tanaka, Gen-ichi Hatakoshi, Hirokatsu Yashiro, and Shinsuke Umegaki, "Out-of-phase properties of optical-waveguide Bragg-grating lenses," Appl. Opt. 23, 1754-1759 (1984)