G. Giannoulis, P. Toumasis, K. Kanta, G. Poulopoulos, K. Tokas, D. Apostolopoulos, H. Avramopoulos
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Integrated Photonic Filters for Flexible Analog-based Mobile Fronthauling
A Wavelength Division Multiplexing (WDM)-enabled analog mobile fronthaul architecture is presented supporting enhanced flexibility by exploiting the fine filtering properties of a fully reconfigurable, silicon photonics-based filtering element. The use of Photonic Integrated Circuit (PIC)-based elastic optical circuitries to support wavelength selectivity, reconfigurability and advanced signal processing at the optical edge is thoroughly discussed. Numerical studies are presented emphasizing on the flexibility, low-energy consumption and the compatibility of our proposed PIC-based implementations with the analog Radio over Fiber (RoF)-based mobile transport schemes. Proof-of-concept analog photonic processing of 1 Gbaud Quadrature Phase Shift Keying (QPSK)-modulated radio is successfully demonstrated through Intermediate Frequency over Fiber (IFoF) transmission experiments.
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