Extraction of laser rate equations parameters for representative simulations of metropolitan-area transmission systems and networks

Effects of Dispersion Fiber on CWDM Directly Modulated System Performance

“…We have to point out that the transmission performance of waveforms produced by directly modulated lasers in fibers with different signs of dispersion, depends strongly on the characteristics of the laser frequency chirp. For this reason, we have modeled two DMLs (made up of DFB-DMLs), by using the Laser Rate Equations in agreement with that reported in [Tomkos 2001b], both DMLs presenting extreme behaviors [Hinton 1993]: DML-A is strongly adiabatic chirp dominated;  = 2.2 and k = 28.7 *10 12 (W.s) -1 and DML-T is strongly transient chirp dominated;  = 5.6 and k = 1.5 *10 12 (W.s) -1 . The  and k values used in our simulation are in agreement with potential commercial devices [Osinki 1987, Peral 1998, Rodríguez 1995.…”

“…The optical power and chirping response of the semiconductor laser to the current waveform I(t) is determined by means of the large-signal rate equations [Tomkos 2001b], which describe the interrelationship of the photon density, carrier density, and optical phase (t), within the laser cavity.…”

Improvement in dispersion tolerance of high-speed fiber optic transmission link by optimization of laser modulation

“…The laser dynamics is modelled by standard rate equa− tions [5,6]. Two sets of parameters were used in the simula− tions presented herein.…”

“…It should be mentioned that Eq. (1) was derived for the single−mode Fabry−Perot (FP) lasers, but it is also widely used as good approximation for DFB ones [6][7][8]. Unfortunately, chirp pa− rameters are not usually specified by vendors thus, they should be measured for any particular laser type.…”

Directly modulated lasers in negative dispersion fiber links

“…It should be mentioned that Eq. (1) was derived for the single-mode Fabry-Perot (FP) lasers, but is also widely used as good approximation for DFB ones [6,[9][10][11]. Unfortunately, chirp parameters are usually not specified by vendors, thus should be measured for any particular laser type.…”