Title :
Comparison of coupling characteristics for several spotsize-converter-integrated laser diodes in the 1.3-μm-wavelength region
Author :
Kawano, K. ; Kohtoku, M. ; Okamoto, H. ; Itaya, Y. ; Naganuma, M.
Author_Institution :
NTT Opto-Electron. Labs., Kanagawa, Japan
fDate :
4/1/1997 12:00:00 AM
Abstract :
Four types of spotsize-converter-integrated laser diodes (SS-LDs) are numerically compared from the viewpoint of the coupling characteristics to the single-mode fiber in the 1.3-μm-wavelength region. The comparison is based on the semivectorial three-dimensional (3-D) finite-difference (FD) beam propagation method (BPM). The SS-LDs investigated here are categorized into a group with vertical tapers and a group with a combination of a lateral taper and a thin-film core. The features of the SS-LDs are clarified.
Keywords :
finite difference methods; infrared sources; laser theory; laser transitions; optical fibre couplers; quantum well lasers; semiconductor device models; vectors; /spl mu/m-wavelength region; 1.3 mum; MQW lasers; coupling characteristics; lateral taper; multiple quantum well lasers; semivectorial 3D finite-difference beam propagation method; single-mode fiber coupling; spotsize-converter-integrated laser diodes; thin-film core; vertical tapers; Coupling circuits; Diode lasers; Finite difference methods; Laser beams; Optical coupling; Optical films; Optical propagation; Quantum well devices; Structural engineering; Transistors;
Journal_Title :
Photonics Technology Letters, IEEE
