Observation of flat chaos generation using an optical feedback multi-mode laser with a band-pass filter | Zendy

Pu Li | Zendy; Qiang Cai | Zendy; JianGuo Zhang | Zendy; Bingjie Xu | Zendy; Yiming Liu | Zendy; Adonis Bogris | Zendy; K.A. Shore | Zendy; Yuncai Wang | Zendy

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Observation of flat chaos generation using an optical feedback multi-mode laser with a band-pass filter

Author(s) -

Pu Li,

Qiang Cai,

JianGuo Zhang,

Bingjie Xu,

Yiming Liu,

Adonis Bogris,

K.A. Shore,

Yuncai Wang

Publication year - 2019

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.27.017859

Subject(s) - optics , broadband , physics , chaotic , bandwidth (computing) , laser , semiconductor laser theory , filter (signal processing) , single mode optical fiber , mode (computer interface) , telecommunications , computer science , artificial intelligence , computer vision , operating system

We demonstrate experimentally that flat and broadband chaotic signals can be easily generated by combining a multi-mode laser diode subject to optical feedback with a band-pass filter. Measurements are made of the RF spectra of multi-mode and single-mode outputs from an external cavity Fabry-Perot (FP) semiconductor laser before and after the filtering procedure. In this way it is found that in the chaos regime the low-frequency energy of the single-mode output is enhanced by about 25 dB comparing with that of the multi-mode output. Moreover, the associated 3-dB chaos bandwidth can reach around 6 GHz for the single mode case. Numerical demonstrations show mode competition is the physical origin of the low-frequency enhancement in the single-mode chaotic outputs.

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