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An SDN reconfigurable metro-access network based on modular photonic integrated ROADM nodes with edgecomputing for beyond 5G application is demonstrated. Multi-degree switching ROADM nodes are used at the metrocore level, while access network is constituted by low-cost 2-degree ROADM nodes. Network scalability per node is met via a modular design where new modules are added in a pay-as-you grow manner to meet capacity demands. We present PIC for wavelength selective switches used in the metro-core network. Two distinct integration approaches i.e. monolithic on InP and hybrid integration of SiPh with InP are followed to enable low loss switching.
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N. Calabretta, N. Tessema, K. Prifti, A. Rasoulzadehzali, Yu Wang, S. Bhat, G. Delrosso, T. Aalto, R. Stabile, "Programmable modular photonic integrated switches for beyond 5G metro optical networks," Proc. SPIE 11690, Smart Photonic and Optoelectronic Integrated Circuits XXIII, 116900O (5 March 2021); https://doi.org/10.1117/12.2580374