Abstract

We investigated the frequency bandwidth, autocorrelation function, and complexity of chaotic temporal waveforms in unidirectionally coupled semiconductor lasers with time-delayed optical feedback. The effective bandwidth, peak value of autocorrelation function, and maximum Lyapunov exponent were simultaneously optimized by searching several control parameters of the laser systems based on multiobjective genetic algorithms. We found a conflicting relation between the effective bandwidth enhancement and the time-delay signature suppression, and a detailed relationship between the maximum Lyapunov exponent and the peak value of autocorrelation function.

© 2022 Optical Society of America

Chaotic dimension enhancement by optical injection into a semiconductor laser under feedback

Jingya Ruan and Sze-Chun Chan
Opt. Lett. 47(4) 858-861 (2022)

Phased-array assisted time-delay signature suppression in the optical chaos generated by an external-cavity semiconductor laser

Pei Zhou, Qi Fang, and Nianqiang Li
Opt. Lett. 45(2) 399-402 (2020)

Enhanced complexity of optical chaos in a laser diode with phase-conjugate feedback

D. Rontani, E. Mercier, D. Wolfersberger, and M. Sciamanna
Opt. Lett. 41(20) 4637-4640 (2016)

Generation of flat wideband chaos based on mutual injection of semiconductor lasers

Lijun Qiao, Tianshuang Lv, Yong Xu, Mingjiang Zhang, Jianzhong Zhang, Tao Wang, Rikai Zhou, Qin Wang, and Hongchun Xu
Opt. Lett. 44(22) 5394-5397 (2019)

Chaotic optical communications of 12.5-Gbaud OOK and 10-Gbaud QPSK signals based on mutual injection of semiconductor lasers

Shunkai Xiang, Min Yang, and Jian Wang
Opt. Lett. 47(11) 2818-2821 (2022)