Title :
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
fDate :
12/1/1990 12:00:00 AM
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/Ga0.97Al0.03As 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-Ga0.97Al0.03As; 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;
Journal_Title :
Lightwave Technology, Journal of
