Abstract

New waveguide grating lenses for coupling a guided wave to a spherical wave, focusing in the air, have been designed. The lenses have the advantages. of high efficiency and high practicability for fabrication. Chirped and curved grating lenses were fabricated on PMMA waveguides by an electron beam exposure system.

© 1984 Optical Society of America

Out-of-phase properties of optical-waveguide Bragg-grating lenses

Shun-ichi Tanaka, Gen-ichi Hatakoshi, Hirokatsu Yashiro, and Shinsuke Umegaki
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Grating lenses for the semiconductor laser wavelength

Gen-ichi Hatakoshi and Kenya Goto
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Grating lenses for optical branching

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Focusing waveguide grating coupler using a diffractive doublet

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Design, fabrication, and performance of preferential-order volume grating waveguide couplers

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