The power equalization of multi-wavelength fiber laser based on SOA

A multi-wavelength erbium-doped fiber laser power equalization structure is demonstrated. A semiconductor optical amplifier is incorporated in the cavity of an erbium-doped fiber ring laser. By taking advantage of the SOA gain saturation effect and the transversely coupled fiber Fabry-Perot resonator. A stable four wavelengths lasing operation with wavelength spacing of 2 nm is realized at room temperature, the power fluctuation of the laser is 1.8 dB.