Title :
Longitudinal-mode characteristics for 1.3 ¿m GaInAsP/InP DFB lasers just below the threshold current
Author :
Okuda, Haruhisa ; Kinoshita, J. ; Hirayama, Yuzo ; Uematsu, Yutaka
Author_Institution :
Toshiba Corporation, Research & Development Center, Kawasaki, Japan
Abstract :
The stopband and the Bragg wavelength in a DFB laser were clearly observed by measuring longitudinal-mode characteristics just below the threshold current. It became clear that the first-order longitudinal-mode oscillation did not always occur. Coupling coefficients ¿ for the DFB laser were deduced to be 10 to 40 cm¿1 from the stopband width.
Keywords :
III-V semiconductors; distributed feedback lasers; gallium arsenide; indium compounds; laser modes; p-n heterojunctions; semiconductor junction lasers; 1.3 micron; 10 top 40 cm-1; Bragg wavelength; GaInAsP/InP DFB lasers; III-V semiconductors; coupling coefficients; distributed feedback; first-order longitudinal mode oscillation; longitudinal mode characteristics; p-n heterojunctions; stopband width; threshold current;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19830251
