Fig. 1. SC generation in 13 cm-long Ge-As-Se fiber pumped with different wavelength^[20]

Fig. 2. Transmission loss characteristic of Ge-Sb-S fiber^[24]. (a) Loss diagram of Ge-Sb-S fiber (inset: output spot at 1.55 μm); (b) transmission efficiency of Ge-Sb-S fiber (inset: cross section of Ge-Sb-S fiber)

Fig. 3. The SC of Ge-Se-Te fiber^[9]. (a) Optical fiber preform and cross section of fiber under electron microscope; (b) loss and dispersion of fiber; (c) experimental setup for enerating SC; (d) SC generated under experiment; (e) SC generated under simulation

Fig. 4. Structure and optical properties of all-solid hybrid MOF^[30]. (a) Structure of As₂Se₃-AsSe₂-As₂S₅ fiber; (b) transmittance for three glasses; (c) dispersion curves of As₂Se₃-AsSe₂-As₂S₅ fiber with different core diameters

Fig. 5. Optical properties and structure of Ge-Sb-Se MOF^[31]. (a) Cross-section of fiber; (b) output of SC

Fig. 6. Structure and optical properties of four-hole chalcohalide suspended core fiber^[35]. (a) Cross section of four hole chalcohalide suspended core fiber; (b) transmittance for two glasses; (c) represents the SC produced by the experiment and simulation of four hole chalcohalide suspended core fiber at different wavelengths

Fig. 7. Optical properties of Ge-As-Se-Te tapered fiber^[38]. (a) Structure diagram of tapered fiber (inset: represent untapered, taper waist, and transition region respectively); (b) loss diagram of fiber (inset: transmittance of core glass); (c) dispersion curves of Ge-As-Se-Te fiber with different fiber core diameters; (d) output of SC

Fig. 8. Structure diagram of cascade pump^[43]

Fig. 9. Output SC of SiO₂-ZBLAN-As₂Se₃ PCF^[51]. (a) Cascade system structure for generating SC; (b) SC generated in ZBLAN fiber; (c) SC generated in As₂Se₃ fiber

Fig. 10. Double-cladding Ge-As-Se-Te fiber^[55]. (a) SC output under different pump conditions; (b) first-order coherence

Fig. 11. GeS₂-GaS₃-CsI chalcohalide microstructure fiber^[56]. (a) Cross section of optical fiber; (b) dispersion curves at different apertures; (c) SC output and coherence curve

Fig. 12. Double-cladding Ge-As-Se-Te tapered fiber^[11]. (a) Structure and refractive index profile; (b) dispersion curve; (c) SC output; (d) coherence curve

Table 1. Physical parameters of low loss chalcogenide fiber matrix materials

Table 2. Main research results of SC spectrum generation with three different types in recent year

Table 3. Main achievements of output power of chalcogenide fibers in recent years

Table 4. Main achievements of SC coherence of chalcogenide fibers with different types in recent years