High-efficiency two lens laser diode to single-mode fiber coupler with a silicon plano convex lens

Author

Karstensen, Holger ; Frankenberger, Rudolf

Author_Institution

Siemens AG, Munich, West Germany

Volume

7

Issue

2

fYear

1989

Firstpage

244

Lastpage

249

Abstract

A theory for the calculation of the spherical aberration loss of silicon planoconvex lenses is presented. The aberration losses are calculated as a function of the lens parameters. Furthermore, a theory for the coupling efficiency of a laser diode to single-mode fiber for a coupling arrangement consisting of a silicon planoconvex lens and a glass ball lens is given. The theoretical predictions are in good agreement with measurements. Experimentally, a coupling efficiency of 72% (1.4-dB coupling loss) was achieved for a laser diode with farfield angles of 20 degrees *33 degrees FWHM and a not yet fully optimized silicon planoconvex lens.<>

Keywords

aberrations; elemental semiconductors; integrated optics; lenses; optical couplers; optical fibres; optical losses; semiconductor junction lasers; silicon; 1.4 dB; 72 percent; Si; glass ball lens; integrated optics; laser diode; lens parameters; plano convex lens; single-mode fiber coupler; spherical aberration loss; Diode lasers; Glass; Lenses; Optical coupling; Optical fiber couplers; Optical fiber theory; Optical receivers; Optical refraction; Refractive index; Silicon;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/50.17762

Filename

17762