We report on tellurium nanorods as a new type of saturable absorber (SA)-induced four-wave-mixing to construct an all-fiber multi-wavelength passively Q-switched erbium-doped-fiber laser. This proposed material is prepared via a green method of nanorod synthesis. The results show that the SA device simultaneously generates seven wavelengths within 1592.4–1599.6 nm waveband and mode spacing of 1.2 nm. Meanwhile, the Q-switched operation is attained with the minimum pulse width of 2.85 μs, maximum repetition rate is 44 kHz and maximum pulse energy of 50 nJ at 275 mW pump power. The number of the generated multi-wavelength lasing lines and the performance of Q-switched pulse fiber lasers have significant value for understanding the dynamics of laser physics and also have potential applications in different fields of photonics such as sensing, optical communication, optical metrology and spectroscopy.

我们报告碲纳米棒作为一种新型的可饱和吸收剂（SA）诱导的四波混合，以构建全光纤多波长被动调Q掺光纤激光器。拟议的材料是通过绿色棒纳米合成方法制备的。结果表明，SA器件可同时产生1592.4–1599.6 nm波段内的七个波长和1.2 nm的模式间隔。同时，在275 mW泵浦功率下，最小脉冲宽度为2.85μs，最大重复频率为44 kHz，最大脉冲能量为50 nJ，实现了Q开关操作。产生的多波长激射线的数量和调Q脉冲光纤激光器的性能对于理解激光物理学的动力学具有重要价值，并且在光子学的不同领域（例如传感，