Shen L, Healy N, Xu L, Cheng H Y, Day T D, Price J H V, Badding J V, Peacock A C
Opt Lett. 2014 Oct 1;39(19):5721-4. doi: 10.1364/OL.39.005721.
An octave-spanning supercontinuum is generated in a hydrogenated amorphous silicon core fiber when pumped in the mid-infrared regime. The broadband wavelength conversion which extends from the edge of the telecommunications band into the mid-infrared (1.64-3.37 μm) is generated by four-wave mixing (FWM) and subsequent pulse break-up, facilitated by the high material nonlinear figure of merit and the anomalous dispersion of the relatively small 1.7 μm diameter core fiber. The FWM sidebands and corresponding supercontinuum can be tuned through the pump parameters, and show good agreement with the predicted phase-matching curves for the fiber.
当在中红外波段泵浦时，氢化非晶硅芯光纤中会产生一个倍频程跨度的超连续谱。从电信波段边缘延伸至中红外（1.64 - 3.37μm）的宽带波长转换是由四波混频（FWM）以及随后的脉冲分裂产生的，这得益于高的材料非线性品质因数和直径相对较小的1.7μm芯光纤的反常色散。FWM边带和相应的超连续谱可以通过泵浦参数进行调谐，并且与该光纤预测的相位匹配曲线显示出良好的一致性。
