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 13.6 GHz within 3 dB is experimentally achieved.

© 2018 Optical Society of America

Evolution of the time delay signature of chaos generated in three types of optical injection systems

Biao Wang, Lijun Qiao, Xiaojing Wei, Mengmeng Chai, and Mingjiang Zhang
Appl. Opt. 62(18) 4899-4905 (2023)

Generation of flat wideband chaos with suppressed time delay signature by using optical time lens

Ning Jiang, Chao Wang, Chenpeng Xue, Guilan Li, Shuqing Lin, and Kun Qiu
Opt. Express 25(13) 14359-14367 (2017)

Time-delay signature suppression of polarization-resolved wideband chaos in VCSELs with dual-path chaotic optical injections

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Appl. Opt. 59(24) 7217-7224 (2020)

Chaos time delay signature suppression and bandwidth enhancement by electrical heterodyning

Chih-Hao Cheng, Yi-Cheng Chen, and Fan-Yi Lin
Opt. Express 23(3) 2308-2319 (2015)

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

Anbang Wang, Yibiao Yang, Bingjie Wang, Beibei Zhang, Lei Li, and Yuncai Wang
Opt. Express 21(7) 8701-8710 (2013)