Multi-beam light source using optical waveguide for optical recording

Author

Okumura, H. ; Arai, K. ; Kawamura, N. ; Tokumaru, H. ; Okuda, H.

Author_Institution

NHK Sci. & Tech. Res. Labs., Tokyo, Japan

fYear

2000

fDate

14-17 May 2000

Firstpage

101

Lastpage

103

Abstract

We have fabricated and tested a multi-beam light source using an optical waveguide. It had an optical output of 12 mW with a propagation efficiency of 30%. The crosstalk between neighboring channels was -17.69 dB. When the output power was increased from 0.5 to 10 mW, the wavefront aberration fell to less than /spl lambda//20. As a result, even when the mode type of the waveguide was multi-mode, it could focus the beam at the optical spot within the diffraction limit. This light source is thus a promising one for optical recording.

Keywords

aberrations; light sources; optical crosstalk; optical fabrication; optical focusing; optical storage; optical testing; optical waveguides; semiconductor laser arrays; 0.5 to 10 mW; 12 mW; crosstalk; diffraction limit; multi-beam light source; neighboring channels; optical fabrication; optical focusing; optical output; optical recording; optical spot; optical testing; optical waveguide; output power; propagation efficiency; wavefront aberration; Light sources; Magnetic heads; Optical arrays; Optical crosstalk; Optical propagation; Optical recording; Optical waveguides; Power generation; Power measurement; Wavelength measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Optical Data Storage, 2000. Conference Digest

Conference_Location

Whisler, BC, Canada

Print_ISBN

0-7803-5950-X

Type

conf

DOI

10.1109/ODS.2000.847994

Filename

847994