Challenges toward a cost-effective implementation of optical OFDM - Rocha, Mônica de Lacerda; Ferreira, Rafael Jales Lima; Dourado, Diego Marques; Rodrigues, Matheus Martins; Ranzini, Stenio Magalhães; Rossi, Sandro Marcelo; Simões, Fábio Donati; Pataca, Daniel Moutinho (Optical Communications : advanced systems and devices for next generation networks, 2019)