Multi-wavelength random fiber laser with a spectral-flexible characteristic

In past decades, multi-wavelength lasers have attracted much attention due to their wide applications in many fields. In this paper, we demonstrate a multi-wavelength random fiber laser with customizable spectra enabled by an acousto-optic tunable filter. The operating wavelength range can be tuned from 1114.5 to 1132.5 nm with a maximal output power of 5.55 W, and spectral channel tuning can also be realized with a maximal number of five. The effect of gain competition and the interaction between Raman gain and insertion loss are also analyzed. Furthermore, the output spectra can be ordered by radiating appropriate radio frequency signals to the acousto-optic tunable filter. This work may provide a reference for agile shape spectrum generation and promote multi-wavelength random fiber laser practicability in sensing, telecommunications, and precise spectroscopy.(c) 2023 Chinese Laser Press

Automated summary

In this paper, a multi-wavelength random fiber laser with customizable spectra is demonstrated using an acousto-optic tunable filter. The operating wavelength range can be tuned from 1114.5 to 1132.5 nm, with a maximal output power of 5.55 W and up to five spectral channels. The paper also analyzes the effects of gain competition and the interaction between Raman gain and insertion loss. Additionally, the output spectra can be ordered by radiating appropriate radio frequency signals to the acousto-optic tunable filter. This work provides a reference for agile shape spectrum generation and promotes the practicality of multi-wavelength random fiber lasers in sensing, telecommunications, and precise spectroscopy.