Supercontinuum Generation in Dual Core Photonic Crystal Fibre

Supercontinuum generation study in dual core square lattice photonic crystal fibre made of multicomponent glass was performed. The fiber was excited by 100 fs pulses of Ti:Sapphire based optical parametric amplifier system with tunability range of 1100 - 1500 nm. Zero dispersion point of the relevant modes in the studied fiber is in area 1200 - 1300 nm, so there was a possibility to excite the fiber in both normal and anomalous dispersion region. The registration was performed in the whole near-IR spectral region. Selective excitation of each core and their selective near-field profile spectral registration was ensured during the experiments. Significant difference between the spectral features for excitation in the normal and anomalous dispersion region was observed. Solitonic behavior was identified with rapidly expanding spectral width of supprcontinuum with increasing of excitation energy in anomalous dispersion region.