Mode Division Multiplexing Bidirectional Transmission System using Double Clad Fiber for Mobile In-Building Solutions

This paper shows the conceptual model of the possibility of simultaneously transmitting data and power on the same optical fiber by adopting the Power Over Fiber PWoF concept and Mode Division Multiplexing MDM. MDM is the data transmission multiplexing scheme of choice where two modes of light are considered; one mode carries the downlink, while the other mode carries the uplink information. Adopting the PWoF, remote devices can be powered by the optical energy transferred on the same optical fiber. Double Clad Fibers DCF are introduced as the transmission medium. DCF consists of the core, which is a few-mode fiber core capable of handling the two needed modes, the inner cladding which has a relatively large diameter and is capable of handling the optical power, and the outer cladding. The proposed system can reduce the complexity and the operations cost, suitable to be used in In-Building Solutions IBS.