Superluminescent diodes with bent waveguide

Author

Lin, Ching-Fuh ; Juang, Chaw-Shiuann

Author_Institution

Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan

Volume

8

Issue

2

fYear

1996

Firstpage

206

Lastpage

208

Abstract

Superluminescent diodes are fabricated with a bent waveguide to prevent optical feedback. The bent ridge waveguide is formed with one end normal to the cleaved facet and the other angled at 7/spl deg/ from the facet normal. The spectral ripple of these devices is around 10% at 6 mW output power. The farfield pattern emitted from the angled facet is crescent-shaped. As the device is set up in an external-cavity configuration, lasing operation is observed regardless of the additional 10.8 dB bending loss introduced by the bent waveguide.

Keywords

III-V semiconductors; aluminium compounds; gallium arsenide; gradient index optics; laser cavity resonators; optical fabrication; optical losses; optical waveguides; quantum well lasers; ridge waveguides; superluminescent diodes; vapour phase epitaxial growth; waveguide lasers; 10.8 dB; 6 mW; GaAs-AlGaAs; angled facet; bending loss; bent ridge waveguide; bent waveguide; cleaved facet; crescent-shaped pattern; external-cavity configuration; fabrication; facet normal; farfield pattern; lasing operation; optical feedback; output power; spectral ripple; superluminescent diodes; Chemical lasers; Coatings; Metallization; Optical device fabrication; Optical waveguides; Power generation; Power measurement; Superluminescent diodes; Waveguide components; Wet etching;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.484242

Filename

484242