Numerical simulation of coherent visible-to-near-infrared supercontinuum generation in the CHCl3-filled photonic crystal fiber with 1.06 μm pump pulses

作者：Wang, Chun-can^*; Li, Wei-min; Li, Na; Wang, Wen-quan

来源：Optics and Laser Technology, 2017, 88: 215-221.

DOI：10.1016/j.optlastec.2016.09.020

• Supercontinuum spectrum
• Highly nonlinear liquid
• Hollow-core photonic crystal fiber

The hollow-core photonic crystal fiber (PCF) is filled by highly nonlinear liquid chloroform (CHCl3) in the center core. The CHCl3-filled PCF with an appropriate geometric parameters exhibits a normal dispersion profile in the visible-to-near-infrared (NIR) region, where the values of group velocity dispersion (GVD) in the vicinity of 1060-nm pump wavelength can be tuned in the range from -20 to-50 ps/nm/km. Furthermore, the nonlinear parameters at wavelengths <1100 nm are higher than 0.7 W-1 m(-1), which can lead to a significant enhancement of the spectral broadening, especially on the blue side. The numerical results show that, when 100-fs pulses centered at 1060 nm are launched in the 0.01 m-long fiber (47 kW peak power), the generated supercontinuum (SC) spectra with high degree of coherence can cover near 2 octaves spanning from 340 to 1360 nm at -20 dB level. The spectral variations are < 5 dB in the wavelength range of 365-1315 nm.

• 出版日期2017-2
• 单位北京交通大学