Fig. 1. Magnesium fluoride PCF. (a) Schematic of structure; (b) field distribution of fundamental mode

Fig. 2. Relationship between the total dispersion and duty ratio when the air hole diameter is constant

Fig. 3. Relationship between total dispersion and hole diameter when the duty ratio does not change

Fig. 4. Waveguide dispersion and total dispersion for generating SC

Fig. 5. Output spectra under different fiber lengths

Fig. 6. Supercontinuum spectra under different pulse widths

Fig. 7. Supercontinuum spectra under different pump light power peaks