Fully powered-over-fibre remote antenna unit

In order to achieve a reliable ROF system with centralized wavelength operation, it is essential to provide enough power for remote antenna unit without the need of copper wires or any kind of batteries. Moreover, to ensure a high quality full-duplex communication when heterodyne generation is employed to obtain the microwave signal, a carefully choice of the laser sources is very important. Despite no wires or batteries and no laser stability control were used, error free transmission was obtained in an original scheme.