An ultra-flattened chromatic dispersion in circular C6H6-infiltrated photonic crystal fibers

Abstract

Introduction:In this study, we report a new design of a circular lattice photonic crystal fiber and investigate its optical properties numerically. Methods: Near-zero ultra-flattened chromatic dispersion is achieved by allowing benzene (C 6 H 6 ) to infiltrate the hollow core and induce a difference in the air hole size in the cladding. By solving Maxwell's wave equations using the full-vector finitedifference eigenmode, the electromagnetic field modes are analyzed. Results: The results show that the variation in dispersion over the broad wavelength range of 527 nm is ± 0.753 ps/nm.km. The nonlinearity coefficient is significantly improved with a value of several thousands W −1 .km −1, which is favorable for supercontinuum generation with low input power even though the confinement loss has not yet reached its desired value. Conclusion: Two PCFs with optimal lattice parameters and suitable characteristic quantities are selected for supercontinuum generation orientation compatible with application fields such as spectroscopy, temperature sensing, and telecommunication.