Abstract

Integrating the information of the first cycle of an optical pulse in a cavity into the input of a neural network, a bidirectional long short-term memory (Bi_LSTM) recurrent neural network (RNN) with an attention mechanism is proposed to predict the dynamics of a soliton from the detuning steady state to the stable mode-locked state. The training and testing are based on two typical nonlinear dynamics: the conventional soliton evolution from various saturation energies and soliton molecule evolution under different group velocity dispersion coefficients of optical fibers. In both cases, the root mean square error (RMSE) for 80% of the test samples is below 15%. In addition, the width of the conventional soliton pulse and the pulse interval of the soliton molecule predicted by the neural network are consistent with the experimental results. These results provide a new insight into the nonlinear dynamics modeling of the ultrafast fiber laser.

© 2023 Optica Publishing Group

Design and analysis of recurrent neural networks for ultrafast optical pulse nonlinear propagation

Gustavo R. Martins, Luís C. B. Silva, Marcelo E. V. Segatto, Helder R. O. Rocha, and Carlos E. S. Castellani
Opt. Lett. 47(21) 5489-5492 (2022)

Mutual dynamics between synchronous solitons in a bidirectional mode-locked fiber laser

Yujia Li, Chao Wang, Dongmei Huang, Hongjie Chen, and Feng Li
Opt. Lett. 47(9) 2170-2173 (2022)

Unveiling external motion dynamics of solitons in passively mode-locked fiber lasers

Yusheng Zhang, Lin Huang, Yudong Cui, and Xueming Liu
Opt. Lett. 45(17) 4835-4838 (2020)

“Invisible” pulsation and period-doubling bifurcation of harmonic mode locking in a bidirectional fiber laser

Qingbo Wang, Pan Wang, Zhifeng Shi, Qiaoqiao Xu, Shijie Sun, Jiangyong He, Zhi Wang, and Yan-Ge Liu
Opt. Lett. 48(23) 6160-6163 (2023)

Full-field real-time characterization of creeping solitons dynamics in a mode-locked fiber laser

Yusheng Zhang, Yudong Cui, Lin Huang, Limin Tong, and Xueming Liu
Opt. Lett. 45(22) 6246-6249 (2020)