Fig. 1. Schematic diagram of stimulated Raman scattering experimental device

Fig. 2. Output spectrum of stimulated Raman scattering experiment under different injected light powers

Fig. 3. Stimulated Raman scattering and suppression of experimental output optical power under different injected optical powers

Fig. 4. A schematic diagram of an experimental device for optical fiber stimulated Raman scattering suppression

Fig. 5. transmission characteristic curve of cascaded long-period fiber grating band-stop filter

Fig. 6. output spectra of stimulated Raman scattering suppression experiments under different injected light powers