Impact of gain compression factor on modulation characteristics of InGaAs/GaAs self-assembled quantum dot lasers

This paper investigates the influence of gain compression factor on the modulation response of ingaas/gaas self-assembled quantum dot laser based on rate equations. for different gain compression factors the output power-current characteristics, lightemissions of quantumdot laser have been simulated and effect of gain compression factor changes on quantum dot laser is illustrated. also, small and large-signal response of quantumdot lasers is studied and the impact of the gain compression factor is presented. it explains that increase of gain compression factor, decreases small-signal modulation characteristics, nevertheless, improves large-signal response of quantumdot lasers. it helps to generate better laser signal quality, higher eye and smaller jitter. the large-signal behavior of a laser diode determines its capability for digital data transfer.themodulation speed of quantumdot lasers is of specific importance if such lasers are considered for optical communication systems.