A continuously spacing-tunable multi-wavelength single-frequency fiber laser (MW-SFFL) at 1.06 μm is investigated based on cascaded four-wave mixing (CFWM) in a high-nonlinearity photonic crystal fiber (HN-PCF). By using two separate wavelength-tunable continuous-wave (CW) SFFLs for pumping the HN-PCF, the MW-SFFL with up to ten stable wavelengths is generated under a total pump power of 890 mW. Furthermore, when the wavelength and the power of pump lasers are appropriately manipulated, the wavelength spaces of the MW-SFFL can be tuned freely within 166 pm and the numbers of wavelengths can be controlled to 4, 6, 8, and 10, respectively. To our knowledge, it is demonstrated for the first time that the MW-SFFL based on CFWM at 1.0 μm band are directly excited by CW SFFLs.

基于高非线性光子晶体光纤 (HN-PCF) 中的级联四波混频 (CFWM)，研究了 1.06 μm的连续间距可调多波长单频光纤激光器 (MW-SFFL )。通过使用两个独立的波长可调连续波 (CW) SFFL 来泵浦 HN-PCF，在 890 mW 的总泵浦功率下产生了多达十个稳定波长的 MW-SFFL。此外，当泵浦激光器的波长和功率得到适当控制时，MW-SFFL 的波长空间可以在 166 pm 内自由调谐，波长数量可以分别控制为 4、6、8 和 10。据我们所知，首次证明了基于 CFWM 在 1.0 μ m 波段的 MW-SFFL直接被 CW SFFL 激发。