基于双波长相干超短脉冲光源的超连续谱产生

Supercontinuum Generation Based on Dual-Wavelength Coherent Ultrashort Pulses

提出在1550 nm波段采用双波长相干超短脉冲光源抽运高非线性光纤获得超连续谱。双波长脉冲抽运能够加强光纤中的四波混频和交叉相位调制过程,从而在相同抽运光功率下,可获得宽度远大于单波长脉冲抽运的超连续谱。利用基于脉冲切割器和Mamyshev再生器的25 GHz双波长相干超短脉冲光源,在入纤功率为24.1 d Bm时,获得了130 nm宽度的超连续谱,并进一步证实了所获超连续谱谱线之间的相干性。

Supercontinuum around 1550 nm using a dual- wavelength coherent ultrashort pulse source is demonstrated.Dual-wavelength pulse pumping can strengthen the processes of four-wave-mixing and crossphase- modulation, thus, it generates a much broader supercontinuum than regular single- wavelength pumping at the same pump power. Based on pulse carver and Mamyshev regenerator 25 GHz dual-wavelength coherent ultrashort pulse source,130 nm supercontinuum is experimentally obtained with a pump power of24.1 dBm.Coherence between the spectral lines is also verified.