Title :
Modulation bandwidth of waveguide distributed feedback lasers
Author :
Mossakowska, Agnieszka ; Szczepaliski, P. ; Wolidski, W.
Author_Institution :
Inst. of Microelectron. & Optoelectron., Warsaw Univ. of Technol., Poland
fDate :
2/1/1994 12:00:00 AM
Abstract :
The effect of the gain saturation of the active medium and system parameters such as loss coefficient, coupling coefficient, and waveguide geometry on the 3-dB modulation bandwidth in planar and fiber waveguide distributed feedback lasers is discussed for various transverse laser modes. Additionally, the influence of the amplitude and phase of the end reflectivity on the modulation bandwidth is analyzed for both structures. Moreover, the spatial hole burning effect on the modulation bandwidth f3 dB for the various system parameters is investigated. It is shown, that in general, the spatial hole burning effect increases the 3-dB modulation bandwidth in both structures
Keywords :
distributed feedback lasers; fibre lasers; optical hole burning; optical modulation; optical saturation; semiconductor lasers; DFB lasers; active medium; coupling coefficient; end reflectivity; fiber waveguide distributed feedback lasers; gain saturation; loss coefficient; modulation bandwidth; planar waveguide distributed feedback lasers; spatial hole burning effect; system parameters; transverse laser modes; waveguide distributed feedback lasers; waveguide geometry; Bandwidth; Distributed feedback devices; Fiber lasers; Geometrical optics; Laser feedback; Laser modes; Optical coupling; Planar waveguides; Reflectivity; Waveguide lasers;
Journal_Title :
Quantum Electronics, IEEE Journal of
