Abstract
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
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