Title :
Ultra-high Q photonic crystal waveguides for DFB laser operation
Author :
Gauthier-Lafaye, O. ; Larrue, A. ; Monmayrant, A. ; Bonnefont, S. ; Lozes-Dupuy, F.
Abstract :
In this paper, we show with 3D FDTD simulations that the affine deformation can be efficiently combined with a waveguide deformation to achieve extremely high quality factors (Q ~ 106) for one DFB mode. A 100 time´s fold increase of the Q factor is achieved between the standard W3 waveguide and the optimised deformed PhC waveguide. We also show that the Q factor is increased solely for one of the 2 DFB modes, thus increasing the modal selectivity of the laser cavity.
Keywords :
Q-factor; distributed feedback lasers; finite difference time-domain analysis; laser cavity resonators; optical waveguides; photonic crystals; semiconductor lasers; 3D FDTD simulation; DFB laser operation; affine deformation; high-quality factor; laser cavity; ultra-high Q photonic crystal waveguides; Distributed feedback devices; Frequency; Laser feedback; Laser modes; Optical arrays; Optical design; Optical waveguides; Photonic crystals; Q factor; Waveguide lasers;
Conference_Titel :
Lasers and Electro-Optics 2009 and the European Quantum Electronics Conference. CLEO Europe - EQEC 2009. European Conference on
Conference_Location :
Munich
Print_ISBN :
978-1-4244-4079-5
Electronic_ISBN :
978-1-4244-4080-1
DOI :
10.1109/CLEOE-EQEC.2009.5194801
