CHAOS SYNCHRONIZATION OF InGaAsP LASERS
الباحث الأول:
Mohammed H.H. Al-Jassani
الباحثين الآخرين:
Aqeel I. Faris
Hussein H. Khudhur
المجلة:
East European Journal of Physics
تاريخ النشر:
4 سبتمبر، 2023
مختصر البحث:
The optical output of a semiconductor laser can fluctuate chaotically by modulating its direct current in limited conditions of the
modulated current signal parameters in terms of modulation frequency and modulation index. In this work, single, dou…
The optical output of a semiconductor laser can fluctuate chaotically by modulating its direct current in limited conditions of the
modulated current signal parameters in terms of modulation frequency and modulation index. In this work, single, double, and chaotic
pulses of an InGaAsP laser with direct current modulation, are numerically presented through a bifurcation diagram. Numerically, the
unidirectional optical coupling system realizes chaotic synchronization between two identical InGaAsP lasers with direct current
modulation, as the transmitter/receiver configuration. The transmission time for transmitting light from the transmitted laser to the
received laser is essential for controlling the quality of chaos synchronization. The transmission time applies on the order of
nanoseconds. Chaos synchronization quality is estimated by a correlation plot and calculated by the cross-correlation coefficient. This
study observed the best synchronization quality (complete chaos synchronization) when the two lasers are identical. On the other hand,
the chaotic synchronization between two non-identical InGaAsP lasers was investigated. In this case, complete chaos synchronization
is not found, and the quality of chaotic synchronization was observed to decrease as the mismatch between the parameters of the two
lasers increased.
