Multi-wavelength tunable wavelength converter based on optical fiber forward stimulated Brillouin scattering

The invention discloses a multi-wavelength tunable wavelength converter based on optical fiber forward stimulated Brillouin scattering, wherein multi-wavelength to-be-converted light waves with equalintensity and frequency interval as forward stimulated Brillouin scattering frequency shift are incident into a conversion medium to excite a forward sound field. According to the converter, an optical fiber with a large effective area is selected as a working medium for multi-wavelength conversion. In the optical fiber with the large effective area, the forward sound field excited by the opticalwave to be converted and the optical wave with the target wavelength generate acousto-optic interaction, phase modulation of the optical wave with the target wavelength is achieved, and finally the center wavelength of the optical wave with multiple wavelengths to be converted is converted to the target wavelength. The wavelength conversion system has the advantages of high output stability, highsignal format transparency,