Broadband supercontinuum generation in a square lattice photonic crystal fiber with C6H6-core using low pump power

Circular lattice benzene-core PCFs with flat near-zero dispersion for low-power broad-spectrum supercontinuum generation

“…For #F 2 , the SC spectrum can be extended from a part of the visible to MIR with even hundreds of times smaller power and short fiber length. Studies [14,29,31,48] also take advantage of the first air-hole ring diameter control model, but the SC spectral widths obtained are still limited with P values ranging from 0.45 to 10 kW. Moreover, with the same circular lattice, the work of Thuy et al [47] also showed a disadvantage in terms of spectrum broadening even using 7.4 and 24.7 times more peak power than ours.…”

“…However, ANDi-SC sources typically require high peak powers from pump lasers. This can lead to fiber damage due to the photothermal effect [11][12][13][14]. On the other hand, for anomalous dispersion regimes, SCG can generate a wide SC spectrum at lower input power.…”

Design and analysis of the C6H6-filled circular photonic crystal fiber with ultra-flat dispersion for broadband supercontinuum generation with peak power of 130 W and 250 W

“…The comparisons between the SCG spectra width and peak power of our novel-designed PCFs with other studies are displayed in table 6. The flat anomalous dispersion, effective mode area is quite small 2.868 µm 2 (highly nonlinear coefficient of 2126.103 W -1 • km -1 ) and loss as low as 97.924 dB m −1 are favorable conditions for #F 3 , pumped in anomalous dispersion regime, to enable SCG with a spectral width of up to 3.026 µm corresponding to a bandwidth of 2.467 µm at the 30 dB with very low peak power, as low as 130 W. Table 6 also shows that this fiber has a similar large spectral width [38] but a peak power about 4.1 times lower. Although its spectral width is 0.9 times that of [39], the peak power is 6.08 times lower.…”

“…For an all-normal dispersion fiber, the SCG bandwidth at 15 dB is 1.3 µm but the peak power is very high, up to 55 kW. When the air hole size in the first ring near the core is smaller than the others, the PCFs investigated in the works [13,38,39] show better SCG spectrum broadening [32] with much lower peak power, ranging from about 450 W to 790 W. However, the ultra-flat dispersion with low value across a wide wavelength range, which is so beneficial for SCG spectral broadening, has not yet been found.…”