A simple surface-emitting LED array useful for developing free-space optical interconnect

Author

Bare, H.F. ; Haas, F. ; Honey, D.A. ; Mikolas, D. ; Craighead, H.G. ; Pugh, G. ; Soave, R.

Author_Institution

Rome Lab., Griffiss AFB, NY, USA

Volume

5

Issue

2

fYear

1993

Firstpage

172

Lastpage

175

Abstract

A surface-emitting light source array of homojunction visible (660 nm) GaAsP light-emitting diodes (LEDs) has been developed to demonstrate the feasibility of new microimaging techniques in vertical optical interconnects. The fabrication process used to create arrays of these independently addressable light sources is described. A study of contact annealing showed that a two-step furnace anneal yielded higher radiance devices than rapid thermally annealed devices. A 4*4 array was used with a reflective focusing diffractive optic element to image light onto photodetectors, thereby proving the usefulness of this source in developing vertical optical interconnects.<>

Keywords

annealing; light emitting diodes; optical interconnections; rapid thermal processing; 4 by 4 array; 4*4 array; 660 nm; GaAsP; III-V semiconductor; contact annealing; fabrication process; free-space optical interconnect; higher radiance devices; homojunction visible GaAsP LED; light source array; microimaging techniques; rapid thermally annealed devices; reflective focusing diffractive optic element; simple surface-emitting LED array; two-step furnace anneal; vertical optical interconnects; Focusing; Furnaces; Light emitting diodes; Light sources; Optical arrays; Optical device fabrication; Optical diffraction; Optical interconnections; Rapid thermal annealing; Rapid thermal processing;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.195994

Filename

195994