Tailoring the Nonlinear Response of Hollow-core Photonic Bandgap Fibres

Abstract

We have fabricated 7-cell and 3-cell core hollow-core photonic bandgap fibres with core sizes ranging from ~ 16.7 µm to 6.5 µm. A numerical study of the nonlinear coefficient of fibres with different core sizes is carried out. We show that the nonlinearity is more effectively increased by a 3-cell core design than by reducing the size of a seven-cell core.