Midinfrared supercontinuum generation via As2Se3 chalcogenide photonic crystal fibers.

摘要: Using numerical analysis, we compare the results of optofluidic and rod filling techniques for broadening supercontinuum spectra generated by As2Se3 chalcogenide photonic crystal fibers (PCFs). The show that when air-holes constituting innermost ring in a PCF made As2Se3-based glass are filled with rods glass, over wide range mid-IR wavelengths, an ultra-flattened near-zero dispersion can be obtained, while total loss is negligible nonlinearity very high. simulations also 50 fs input optical pulse 10 kW peak power center wavelength 4.6 μm launched into mm long rod-filled PCF, ripple-free spectral as 3.86 obtained.