Electronic-controlled route to chaos in a quantum-well laser diode is carri
ed out by a delayed-feedback technique. By introducing an extra delayed-fee
dback control term cS(n)(t - tau), chaotic light output can be achieved at
relatively low bias and small modulation depth. Bifurcation diagram, Poinca
re map, and Lyapunov exponents suggests quasi-periodicity route to chaos. (
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