Design of hybrid photonic crystal fibers for tailoring dispersion and confinement loss

This paper presents the proposal of a hybrid cladding photonic crystal fiber offering flat dispersion and low confinement operating in the Telecom bands. Simulation results reveal that near zero ultra flattened dispersion of 0 ± 1.20 ps/(nm.km) is obtained in a 1.25 to 1.70 μm wavelength range i.e. 450 nm flat band along with low confinement losses which is less than 10
⁻²
dB/km at operating wavelength 1.55 μm. Moreover, the sensitivity of the fiber dispersion properties to a ±1% to ±5% variation in the optimum parameters is studied for practical conditions.