TY - JOUR
T1 - Evolution of ultra-short optical pulses in active DFB waveguides
AU - Chi, Jacques
AU - Als, Adrian
AU - Ghassemlooy, Zabih
PY - 2002/6
Y1 - 2002/6
N2 - We present a time-domain study on propagation of pico-second optical pulses in active semiconductor waveguides embedded with a Bragg grating. The nonlinear effects of gain saturation, limited carrier lifetime, as well as linewidth enhancement factor are taken into account. It is theoretically shown that the effective group velocity can be significantly enhanced by the grating, resulting in the so-called superluminal transmission. Moreover, the pulse propagation and reflection behaviors are greatly influenced by such parameters as Bragg coupling strength and optical gain in the waveguide.
AB - We present a time-domain study on propagation of pico-second optical pulses in active semiconductor waveguides embedded with a Bragg grating. The nonlinear effects of gain saturation, limited carrier lifetime, as well as linewidth enhancement factor are taken into account. It is theoretically shown that the effective group velocity can be significantly enhanced by the grating, resulting in the so-called superluminal transmission. Moreover, the pulse propagation and reflection behaviors are greatly influenced by such parameters as Bragg coupling strength and optical gain in the waveguide.
U2 - 10.1051/jp4:20020127
DO - 10.1051/jp4:20020127
M3 - Article
SN - 1155-4339
SN - 1951-6401
VL - 12
SP - 187
EP - 188
JO - Journal de Physique IV (Proceedings)
JF - Journal de Physique IV (Proceedings)
IS - 5
ER -