Broadband supercontinuum generation in hollow-core
photonic crystal ¯bers in¯ltrated with chloroform
Tác giả: Thuy Nguyen Thi, Lanh Chu Van
Modern Physics Letters B
Quyển: Trang: 2350233
Năm xuất bản: 8/2023
Tóm tắt
The chloroform-in¯ltrated square lattice photonic crystal ¯bers (PCFs) are designed with the
di®erence of the air hole diameters in the cladding to improve chromatic dispersion and
nonlinear properties. Based on numerical simulation results, two optimal structures with °at
dispersion, high nonlinear coe±cient, and small con¯nement loss are used for supercontinuum
(SC) generation. The ¯rst ¯ber has an all-normal dispersion regime, a nonlinear coe±cient of
486.355W1.km1 generating an SC spectrum of 640.3nm within 30 dB levels at a pump
wavelength of 0.945 m with peak power as low as 1.44 kW. With anomalous dispersion
properties, the second ¯ber gives a very broad SC spectrum of 1471.8nm within 30 dB levels at a
1.4 m pumping wavelength with a peak power of 20 kW. All-¯ber SC sources operating with
low-power pump lasers can use these ¯bers to e®ectively replace glass-core ¯bers.
