Abstract
We propose and demonstrate a novel scheme to generate time-delay-signature-suppressed broadband chaotic light by using an optically injected laser diode subjected to scattering light feedback. The achievement of broadband chaos is based on the interaction between the injection light and chaotic light from the scattering feedback semiconductor laser via beating. A single-mode fiber as a continuous scatterer is specially used as a feedback cavity to introduce random feedback, which could truly eliminate the time delay signature of chaotic light. The chaotic light with a power spectrum that extends to 13.6GHz within 3dB is experimentally achieved.
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