Nonlinear coefficient measurements for dispersionshifted fibres using self-phase modulation method at 1.55 µm

Nonlinear coefficient measurements for dispersion shifted fibres (DSFs) using the self-phase modulation (SPM) method at 1.55 µm are presented for the first time. The nonlinear Kerr refractive index n2 for various DSFs is found to be ~2.31 × 10-20 m2/W (± 5 %) for random polarisation states at 1.55 µm.