Chromatic dispersion management of high-index glass photonic crystal fiber

Chromatic dispersion engineering is one of the most promising advantages provided by the photonic crystal fiber, PCFs. Their two-dimensional photonic crystal permits to manage the waveguide dispersion as a function of their design parameters: inter-hole spacing, hole diameter, number of air rings and cladding refractive index. Most PCFs are silica-based and has a honeycomb cladding. This paper presents a dispersion design methodology of high-index glass photonic crystal fibers, based on a new-geometry. Its numerical results point out positive or nearly zero ultra-flattened dispersion in a wide wavelength range. The nearly zero case presents chromatic dispersion at λ=1.55 μm equal to -0.352 ps/km/nm and a quite low slope equal to 1 · 10^-3 ps/nm²/km at 1.5-1.6 μm window. The lowest obtained slope was 5 · 10^-4 ps/nm²/km.