High-power synchronous multi-wavelength solitons from a multimode mode-locked fiber laser system

Abstract

In this Letter, we implement a multimode fiber (MMF) laser system mode-locked by a nonlinear polarization rotation technique for controllable synchronous multi-wavelength soliton generation. The synchronization of the repetition rates for different wavelengths is realized by the special mode transmission in MMF. For dual-wavelength mode-locking at 1566.7 nm and 1617.2 nm, each of the synchronously mode-locked solitons consists of a train of quasi-periodic beat pulses with a pulse width of 84 fs and period of 162 fs. The total output power reaches 532 mW with optimally balanced two-color intensities. Furthermore, switchable dual- and tri-wavelength synchronized femtosecond pulses are also obtained. In contrast to previous reports, this synchronously mode-locked multi-wavelength is output directly from a laser oscillator, which provides a simpler candidate to achieve pulse synchronization.

Spatiotemporal mode-locking and dissipative solitons in multimode fiber lasers

“…By precisely tuning the NL-MMI filter, tunable dual-wavelength STML can be realized with two wavelength emissions showing distinct characteristics 170 . Nearly 500 mW power output with optimally balanced two-color intensities was realized using the NL-MMI for mode-locking in a MMF laser 172 , which provide a promising synchronous multi-color pulse source for THz-wave generation and Raman scattering spectroscopy 173 , 174 . The damage threshold for all-fiber devices needs to be considered for high power applications, but it is promising to realize high power MMF lasers with a compact form factor and high robustness.…”

Multi-wavelength mode-locked erbium-doped fiber laser employing NPR and multi-mode fiber

“…It has the advantages of passive mutual coherence and common-mode noise cancellation [6][7] . In this letter, an Erbium-doped fiber laser is designed to realize asynchronously switchable dual-wavelength and three-wavelength mode-locked pulses by using the multi-mode interference filtering effect of multi-mode fibers [8] . Compared with previous studies on multi-wavelength fiber lasers, the structure designed in this experiment is simpler and easier to operate.…”

Fixed/Predefined-time synchronization of memristor-based complex-valued BAM neural networks for image protection

“…Synchronization has important applications in many fields, such as secure communication, nonlinear control systems, pattern recognition, and information processing (Alimi et al, 2019 ; Ouyang et al, 2020 ). Synchronization also plays an important role in laser systems, superconducting materials, and conventional bus dispatching (Gkiotsalitis et al, 2020 ; Wang et al, 2021 ). In addition, Su et al ( 2020 ) studied the manipulator control based on an improved recurrent neural network.…”