Title :
Circular, narrow beam emission of 1.3-µm surface-emitting laser with monolithically-integrated InP lens for direct fiber coupling
Author :
Shinoda, K. ; Adachi, K. ; Shiota, T. ; Kitatani, T. ; Fukamachi, T. ; Sugawara, T. ; Aoki, Masaki
Author_Institution :
Central Res. Lab., Hitachi, Ltd., Kokubunji
Abstract :
Circular, narrow beam emission of a lens-integrated surface-emitting laser operated at 1.3-mum wavelength was demonstrated. The laser consists of a distributed feedback laser cavity monolithically integrated with an etched 45deg total reflection mirror and an etched InP lens. The profile of the etched InP lens was estimated to be a highly symmetrical parabolic shape that is ideal for the collimation of a Gaussian beam. A fabricated lens-integrated surface-emitting laser exhibited a circular, narrow far-field pattern with full-width at half-maximums of 3.9deg times 3.5deg. A highly efficient direct coupling to a single-mode fiber with a coupling efficiency of - 2.7 dB was also confirmed.
Keywords :
III-V semiconductors; distributed feedback lasers; fibre lasers; indium compounds; integrated optics; laser cavity resonators; lenses; mirrors; optical fibres; reflection; surface emitting lasers; Gaussian beam; InP; direct fiber coupling; distributed feedback laser cavity; etching; monolithically-integrated lens; narrow beam emission; single-mode fiber; surface-emitting laser; symmetrical parabolic shape; total reflection mirror; Distributed feedback devices; Etching; Fiber lasers; Indium phosphide; Laser beams; Laser feedback; Lenses; Optical coupling; Surface emitting lasers; Surface waves;
Conference_Titel :
Indium Phosphide & Related Materials, 2009. IPRM '09. IEEE International Conference on
Conference_Location :
Newport Beach, CA
Print_ISBN :
978-1-4244-3432-9
Electronic_ISBN :
1092-8669
DOI :
10.1109/ICIPRM.2009.5012434
