Title :
Linewidth dependence on side-mode suppression in three-electrode DFB laser
Author :
Oberg, M.G. ; Broberg, B. ; Nilsson, S. ; Backbom, L. ; Eriksson, G. ; Lundgren, L. ; Vuorela, Timo
Author_Institution :
Swedish Inst. of Microelectron., Kista, Sweden
Abstract :
A 1000 mu m-long three-electrode DFB laser with a large side-tuning and with a minimum linewidth of 4 MHz is demonstrated. The correlation between the main mode linewidth and DFB submode suppression is large. Side-modes on the opposites sides of the stop band are seen to broaden the linewidth to different extents. A Fabry-Perot mode 50 nm away has no observable effect on the linewidth.
Keywords :
distributed feedback lasers; laser frequency stability; optical communication equipment; semiconductor junction lasers; 1 mm; 4 MHz; linewidth; mode linewidth; side-mode suppression; side-tuning; stop band; submode suppression; three-electrode DFB laser;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19890121
