研制了一种宽波长范围窄线宽波长连续可调的光纤激光器，激光器基于环形腔结构，采用980nm的半导体激光器作为泵浦源，掺铒光纤作为增益介质，使用一段未泵浦的保偏掺铒光纤作为饱和吸收体压窄线宽。使用光纤法布里-珀罗滤波器作为选频器件，通过调节光纤其驱动电压实现光纤激光器的波长扫描。利用激光器的相干长度与干涉仪干涉条纹的关系动态测量激光器的光谱线宽，最终得到了扫描范围为1515.1～1588.6nm，线宽小于0.025nm的波长连续可调的光谱输出。

A continuous wide wavelength scanning fiber laser with narrow linewidth is developed. The laser is based on a ring cavity structure, in which a 980nm semiconductor laser is used as the pump source, an erbium-doped fiber (Nufern, EDFC-980-HP) is used as the gain medium, an unpumped erbium-doped fiber (IXFiber, EDFC-980-PM) is used as the saturable absorber to compress the linewidth. A Fabry-Perot (F-P) tunable filter is used as the wavelength selector, the wavelength scanning of the fiber laser is achieved by changing the voltage applied on the tunable filter. The spectral linewidth of the laser is measured by the relationship between the coherent length of the laser and interference fringes of the interferometer, the wavelength scanning range from 1514.8nm to 1586.6nm and the linewidth less than 0.025nm are realized finally.