Tunable Multi-wavelength Fiber Laser Based on Semiconductor Optical Amplifier
基于半导体光放大器的可调谐多波长光纤激光器

A novel continuously tunable multi-wavelength fiber ring laser is constructed by using semiconductor optical amplifier (SOA) as the gain medium. A Hi-Bi fiber loop mirror (Hi-Bi FLM) is inserted into the cavity as filter. More than 17 stable wavelengths with line-width less than 0.102 nm and more than 25 dB SNR spacing on ITU-grid (100 GHz) are obtained. The output peak power variation of eachwavelengthislessthan6dB.These17wavelengthscanbecontinuouslytunedtogetherwithin50GHz by proper control of the polarization controller of Hi-Bi FLM. The feasibility of using this multi-wavelength fiber ring laser in testing the characteristic of erbium-doped fiber amplifier (EDFA) is discussed experimentally.