A new guided-wave lens structure

Author

Minot, Mark M. ; Lee, Chin C.

Author_Institution

Dept. of Electr. & Comput. Eng., California Univ., Irvine, CA, USA

Volume

8

Issue

12

fYear

1990

fDate

12/1/1990 12:00:00 AM

Firstpage

1856

Lastpage

1865

Abstract

A guided-wave lens is reported. The present lens structure is realized by embedding a low-index lens-shaped waveguide region in a surrounding higher-index planar waveguide. Very large index differences between the lens region and host waveguide are realizable using this technique, making it possible to fabricate low f-number lenses with low spherical aberration. The lens exhibits excellent off-axis performance, low chromatic aberration, and high polarization independence. A prototype f/2 lens in a GaAs/Ga_0.97Al_0.03As waveguide has been designed and fabricated using Corning 7059 glass and SiO₂ for the lens waveguide structure

Keywords

aberrations; integrated optics; lenses; optical waveguides; refractive index; Corning 7059 glass; GaAs-Ga_0.97Al_0.03As; SiO₂; embedding; f/2 lens; guided-wave lens structure; high polarization independence; higher-index planar waveguide; index differences; low chromatic aberration; low f-number lenses; low spherical aberration; low-index lens-shaped waveguide region; off-axis performance; Etching; Gallium arsenide; Glass; Lenses; Optical refraction; Optical waveguides; Planar waveguides; Polarization; Prototypes; Semiconductor waveguides;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/50.62883

Filename

62883