An improved wavelength-selective all-fiber cross-connect node

A flexible and transparent optical network, can be realised by deploying fully-optical cross-connect nodes (OXNs). We propose some modifications on previously reported all-fiber OXN. These modification aim to enhance the optical spectral efficiency, modularity and spectral response of the OXN. Simulations of the OXN and its modified version indicate a significant increase in the cascadability achieved by the modified OXN.