一种高性能环形可调谐光纤光栅激光器研究

研制了一种新型的高性能环形可调谐光纤光栅激光器。该激光器使用980nm LD作为泵浦源,使用长度为10. 8m的新型增益平坦掺铒光纤作为增益介质,采用可调谐光纤光栅滤波器进行波长调谐,调谐范围可达41nm (1528nm～1569nm) ,中心波长可精确调谐到C波段指定的ITU - T标准中心波长处, 3dB 带宽< 0. 08nm, 25dB带宽< 0. 2nm,波长稳定性优于0. 01nm,边模抑制比> 60dB。最大输出功率46. 94mW,功率稳定性优于±0. 02dB,阈值泵浦功率7. 3mW,斜率效率为39. 75%。并分析了不同腔长、不同输出耦合比对输出功率的影响。

Study of a High-performance Ring Wavelength Tunable Fiber Bragg Grating Laser

A new-style high-performance ring wavelength-tunable fiber Bragg grating laser is studied, which used 980nm LD as pump source and 10.8m new-style gain flatting erbium-doped fiber as gain medium. Precisely locked to the ITU-T wavelength grid with the stability of 0.01nm using tunable fiber Bragg grating is demonstrated. The tuning range of 41nm(1528nm~1569nm), linewidth in 3 dB<0.08nm and in 25dB<0.2nm, and edge-mode suppression ratio>60dB have been achieved. The maximum output power is 46.94 mW, and the stability of power is better than0.02dB. The threshold and slope efficiency of laser are 7.3 mW and 39.75%.The output power of fiber ring laser influenced by difference split ratio of output couplers or different length of Er-doped fiber are discussed.