Title :
AlGaInAs–InP Microcylinder Lasers Connected With an Output Waveguide
Author :
Wang, Shi-Jiang ; Lin, Jian-Dong ; Huang, Yong-Zhen ; Yang, Yue-De ; Che, Kai-Jun ; Xiao, Jin-Long ; Du, Yun ; Fan, Zhong-Chao
Author_Institution :
State Key Lab. on Integrated Optoelectron., Chinese Acad. of Sci., Beijing, China
Abstract :
AlGaInAs-InP microcylinder lasers connected with an output waveguide are fabricated by planar technology. Room-temperature continuous-wave operation with a threshold current of 8 mA is realized for a microcylinder laser with the radius of 10 μm and the output waveguide width of 2 μm. The mode Q-factor of 1.2 x 104 is measured from the laser spectrum at the threshold. Coupled mode characteristics are analyzed by 2-D finite-difference time-domain simulation and the analytical solution of whispering-gallery modes. The calculated mode Q-factors of coupled modes are in the same order as the measured value.
Keywords :
III-V semiconductors; Q-factor; aluminium compounds; finite difference time-domain analysis; gallium compounds; indium compounds; optical planar waveguides; semiconductor lasers; whispering gallery modes; 2D finite-difference time-domain simulation; AlGaInAs-InP; continuous-wave operation; current 8 mA; microcylinder lasers; mode Q-factor; output waveguide; planar technology; temperature 293 K to 298 K; threshold current; whispering-gallery modes; Analytical models; Coupled mode analysis; Finite difference methods; Laser modes; Planar waveguides; Q measurement; Threshold current; Time domain analysis; Waveguide lasers; Whispering gallery modes; Coupled modes; microresonators; optical resonators; semiconductor laser;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2010.2056361
