Multiplexed computer-generated waveguide hologram using gratings with different spatial frequencies

Author

Li, Ming ; Kristjansson, Sigurgeir ; Eriksson, Niklas ; Larsson, A.

Author_Institution

Dept. of Optoelectron. & Electr. Meas., Chalmers Univ. of Technol., Goteborg, Sweden

Volume

8

Issue

12

fYear

1996

Firstpage

1653

Lastpage

1655

Abstract

We propose and experimentally demonstrate a multiplexed off-plane computer-generated waveguide hologram, using waveguide gratings with different spatial frequencies. Two spot arrays are produced at different deflection angles and simultaneously focused at different focal lengths above the waveguide. Electron-beam lithography and reactive ion beam etching were used in fabricating this device. The uniformity error and the diffraction efficiency were measured to be approximately 10% and 55%, respectively.

Keywords

computer-generated holography; electron beam lithography; holographic gratings; measurement errors; multiplexing; optical fabrication; optical waveguides; 10 percent; 55 percent; deflection angles; diffraction efficiency; electron-beam lithography; focal lengths; focused; holographic gratings; multiplexed computer-generated waveguide hologram; multiplexed off-plane computer-generated waveguide hologram; reactive ion beam etching; spatial frequencies; spot arrays; uniformity error; waveguide gratings; Arrayed waveguide gratings; Focusing; Frequency; Optical arrays; Optical diffraction; Optical filters; Optical refraction; Optical variables control; Optical waveguides; Pattern recognition;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.544708

Filename

544708