PHOTONIC CONVERTER OF PASSIVE OPTICAL NETWORK SIGNALS INTO RADIO SIGNALS OVER FIBER.

摘要

Presented is a photonic converter of passive optical networks into radio signals over fiber (photon converter from PON to RoF), which is formed by an optical combiner with two inlets, the first inlet being supplied by a PON signal having a single wavelength, centered to fPON frequency and the second inlet being supplied by a non-modulated optical tone, at a fLD frequency, generated by a laser diode, which polarization current and temperature are fixed in order the fLD frequency of the emitted optical tone may differ from the fPON frequency; the RoF signal is obtained at the output of the optical combiner, which is formed by the optical tone non-modulated to fLD and an optical tone modulated at fPON, the difference between the fLD and the fPON is a value equal to the RF frequency of the signal to be radiated that is generated after the photo detection and which range covers the whole microwave spectrum, including the millimeter signals. The PON to RoF photonic converter is arranged aft er the multiplexer of the WDM-PON network and before the PON and RoF distribution networks.