Generation of wideband chaos with suppressed time-delay signature by delayed self-interference | Zendy

Anbang Wang | Zendy; Yibiao Yang | Zendy; Bingjie Wang | Zendy; Beibei Zhang | Zendy; Lei Li | Zendy; Yuncai Wang | Zendy

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Generation of wideband chaos with suppressed time-delay signature by delayed self-interference

Author(s) -

Anbang Wang,

Yibiao Yang,

Bingjie Wang,

Beibei Zhang,

Lei Li,

Yuncai Wang

Publication year - 2013

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.21.008701

Subject(s) - chaotic , wideband , physics , optics , interference (communication) , spectral density , signal (programming language) , oscillation (cell signaling) , signature (topology) , semiconductor laser theory , optical chaos , random number generation , laser , computer science , telecommunications , mathematics , algorithm , channel (broadcasting) , geometry , artificial intelligence , biology , genetics , programming language

We demonstrate experimentally and numerically a method using the incoherent delayed self-interference (DSI) of chaotic light from a semiconductor laser with optical feedback to generate wideband chaotic signal. The results show that, the DSI can eliminate the domination of laser relaxation oscillation existing in the chaotic laser light and therefore flatten and widen the power spectrum. Furthermore, the DSI depresses the time-delay signature induced by external cavity modes and improves the symmetry of probability distribution by more than one magnitude. We also experimentally show that this DSI signal is beneficial to the random number generation.

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