Fig. 1. Schematic design of all-solid-state ChG PCF

Fig. 2. CL and A_eff of PCF changing with Λ and d/Λ at 2 µm wavelength, simulated by COMSOL

Fig. 3. Variation of confinement loss ratio between LP₁₁ mode and LP₀₁ mode and A_eff with d/Λ of PCF at 2 µm wavelength, simulated by COMSOL

Fig. 4. Confinement loss of LP₁₁ mode and LP₀₁ mode and effective mode area of LP₀₁ mode of PCF in wavelength range of 1.5‒10 µm, simulated by COMSOL

Fig. 5. Variation of dispersion of LMA ChG PCF with Λ and material (Ge-As-Se glass) dispersion, simulated by COMSOL. Inset: enlargement at zero dispersion wavelength

Fig. 6. Parameters of Ge₁₀As₂₂Se₆₈ and As₂S₃ glass. (a) Refractive index and NA of two types of glass; (b) Fourier transform infrared transmission spectra of two types of glass (thicknesses of Ge₁₀As₂₂Se₆₈ glass_{and As2S3 glass are 7 mm and 2 mm, respectively)}

Fig. 7. Optical fiber preform and its composition. (a) 1 Ge₁₀As₂₂Se₆₈ rod and 18 Ge₁₀As₂₂Se₆₈/As₂S₃ rods; (b) jacket tube; (c) stacked preform

Fig. 8. Fabricated LMA all-solid-state ChG PCF. (a) Microscopic photo; (b) measured spot; (c) spot intensity

Fig. 9. Loss measurement results of LMA single-mode all-solid-state ChG PCF and unclad Ge₁₀As₂₂Se₆₈ fiber

Fig. 10. Schematic diagram of bending loss changing with bending radius at 2 µm