Title :
1.55-μm spot-size converter integrated laser diode with conventional buried-heterostructure laser process
Author :
Sang-Wan Ryu ; Sung-Bock Kim ; Jae-Sik Sim ; Jeha Kim
Author_Institution :
Electron. & Telecommun. Res. Inst., Taejon, South Korea
Abstract :
A 1.55-μm spot-size converter integrated laser diode is demonstrated with conventional buried-heterostructure laser process. For the spot-size converter, we employed a double-waveguide structure in which a ridge-based passive waveguide was incorporated. The passive waveguide was optically combined with a laterally tapered active waveguide to control mode size. The threshold current was measured to be 5 mA together with high slope efficiency of 0.45 W/A. The beam divergence angles in the horizontal and vertical directions were as small as 9.0/spl deg/ and 7.8/spl deg/, respectively.
Keywords :
infrared sources; laser modes; laser transitions; optical communication equipment; optical fabrication; ridge waveguides; semiconductor lasers; waveguide lasers; 1.55 micron; 1.55-/spl mu/m spot-size converter integrated laser diode; beam divergence angles; buried-heterostructure laser process; double-waveguide structure; horizontal directions; laterally tapered active waveguide; mode size; optically combined; passive waveguide; ridge-based passive waveguide; semiconductor lasers; slope efficiency; threshold current; vertical directions; Associate members; Diode lasers; Laser beams; Laser modes; Optical coupling; Optical device fabrication; Optical fiber devices; Optical waveguides; Power lasers; Waveguide lasers;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2002.805770
