Sun Junjie, Wang Zefeng, Wang Meng, Zhou Zhiyue, Tang Ni, Chen Jinbao, Gu Xijia
Appl Opt. 2017 Nov 10;56(32):9114-9118. doi: 10.1364/AO.56.009114.
A watt-level tunable 1.5 μm narrow linewidth fiber ring laser using a temperature tuning π-phase-shifted fiber Bragg grating (π-PSFBG) is demonstrated here, to the best of our knowledge, for the first time. The π-PSFBG is employed as both a narrow band filter and a wavelength tuning component, and its central wavelength is thermally tuned by a thermo-electric cooler. The maximum laser power is about 1.1 W with a linewidth of ∼318 MHz (∼2.57 pm) and a power fluctuation of less than 3%. The wavelength tuning range of the laser is about 1.29 nm with a sensitivity of ∼14.33 pm/°C, and the wavelength fluctuation is about 0.2 pm. This work provides important reference for tunable fiber lasers with both high power and narrow linewidth.
据我们所知，首次展示了一种使用温度调谐π相移光纤布拉格光栅（π-PSFBG）的瓦级可调谐1.5μm窄线宽光纤环形激光器。π-PSFBG用作窄带滤波器和波长调谐组件，其中心波长由热电冷却器进行热调谐。最大激光功率约为1.1W，线宽约为318MHz（约2.57pm），功率波动小于3%。激光器的波长调谐范围约为1.29nm，灵敏度约为14.33pm/°C，波长波动约为0.2pm。这项工作为兼具高功率和窄线宽的可调谐光纤激光器提供了重要参考。
