Journal
OPTICS EXPRESS
Volume 27, Issue 9, Pages 12976-12986Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.27.012976
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Funding
- National Natural Science Foundation of China [61675008, 61805281]
- Shenzhen Science and Technology Innovation Commission [KQJSCX20170727163424873]
- Tsinghua-Berkeley Shenzhen Institute (TBSI) Faculty Start-up Fund
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Injecting a weak narrow-linewidth CW trigger to control the picosecond pulse pumped supercontinuum (SC) generation in a highly nonlinear dispersion shifted fiber (HNL-DSF), the Raman soliton at 2 mu m is experimentally observed. We demonstrate that the cascaded four-wave mixing (FWM) caused by the weak CW trigger accelerates soliton fission and collision, and the large red-shift by the Raman effect in fibers induces obvious Raman soliton occurring in the long wavelength range of SC. A reduced effect on spectral modification on the SC spectrum at higher pump powers is also observed in the experiment. Simulations of the spectral evolution and spectrogram are carried out to verify the experimental observation. Both experiment and simulation results show the SC characteristics in the mid-infrared region can be greatly improved by the triggering effect. (C) 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
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