1.55 micrometer ridge DFB laser integrated with a buried-ridge-stripe dual-core spot-size converter by quantum-well intermixing

Author

Hou, Lianping ; Zhu, Hongliang ; Kan, Qiang ; Ding, Ying ; Wang, Baojun ; Zhou, Fan ; Wang, Wei

Author_Institution

Nat. Res. Center for Optoelectron. Technol., Chinese Acad. of Sci., Beijing, China

Volume

17

Issue

11

fYear

2005

Firstpage

2259

Lastpage

2261

Abstract

A ridge distributed feedback laser monolithically integrated with a buried-ridge-stripe spot-size converter operating at 1.55 micrometre wavelength was successfully fabricated by means of low-energy ion implantation quantum-well intermixing and dual-core technologies. The passive waveguide was optically combined with a laterally exponentially tapered active core to control the mode size. The devices emit in a single transverse and single longitudinal mode with a sidemode suppression ratio of 38.0 dB. The threshold current was 25 mA. The beam divergence angles in the horizontal and vertical directions were as small as 8.0 degree X 12.6 degree, respectively, resulting in 3.0-dB coupling loss with a cleaved single-mode optical fiber.

Keywords

distributed feedback lasers; integrated optics; ion implantation; laser beams; laser modes; optical losses; semiconductor lasers; waveguide lasers; 1.55 mum; 25 mA; 3.0 dB; beam divergence angles; buried-ridge-stripe converter; cleaved optical fiber; coupling loss; distributed feedback laser; dual-core converter; laser diode; laser fabrication; low-energy ion implantation; mode size control; monolithically integrated laser; passive waveguide; quantum-well intermixing; ridge DFB laser; sidemode suppression ratio; single longitudinal mode emission; single transverse mode emission; single-mode optical fiber; spot-size converter; tapered active core; Distributed feedback devices; Ion implantation; Laser feedback; Laser modes; Optical waveguides; Particle beam optics; Quantum well lasers; Stimulated emission; Waveguide lasers; Wavelength converters; Distributed feedback (DFB) laser diode (LD); dual-waveguide; quantum-well intermixing (QWI); spot-size converter (SSC);

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2005.858137

Filename

1522286