Title :
Measurements of chirp and linewidth enhancement factor of DFB semiconductor lasers using a self-homodyne interferometric system
Author :
Saavedra, A.A. ; Passy, R. ; von der Weid, J.P. ; Manganote, E. ; Bordeaux, A.C.G.
Author_Institution :
Center of Telecommun. Studies, Pontificia Univ. Catolica do Rio de Janeiro, Brazil
Abstract :
A self-homodyne interferometric optical system fed by a modulated DFB semiconductor laser is used to obtain the AM and FM response, the chirp parameter and the linewidth enhancement factor of these lasers. Three different DFB lasers were measured and the results are in good agreement with those obtained by others techniques. The knowledge of these lasers characteristics are important in high-performance optical communications systems, to improve the FM response, the transmission data rates, predict channel densities and reduce crosstalk
Keywords :
amplitude modulation; distributed feedback lasers; frequency modulation; laser variables measurement; light interferometry; optical modulation; semiconductor lasers; spectral line breadth; AM response; DFB semiconductor lasers; FM response; chirp parameter; linewidth enhancement factor; modulated DFB laser; self-homodyne interferometric system; Chirp; Fiber lasers; Frequency modulation; Frequency shift keying; Intensity modulation; Optical fiber communication; Optical interferometry; Optical mixing; Optical modulation; Semiconductor lasers;
Conference_Titel :
Microwave and Optoelectronics Conference, 1997. Linking to the Next Century. Proceedings., 1997 SBMO/IEEE MTT-S International
Conference_Location :
Natal
Print_ISBN :
0-7803-4165-1
DOI :
10.1109/SBMOMO.1997.646904
