A Novel Architecture of Millimeter-Wave Full-Duplex Radio-Over-Fiber System With Source-Free Bs Based on Polarization Division Multiplexing and Wavelength Division Multiplexing

Abstract

Abstract-In this paper, we propose a novel architecture of full-duplex millimeter-wave radio-over-fiber (RoF) system based on polarization division multiplexing (PDM) and wavelength division multiplexing (WDM) technology. In our scheme, the light waves for downlink and uplink transmission are provided by the same laser, which realize the source-free base station (BS) and multi-services transfer for next generation wireless access network. Since the uplink optical carrier is Y -polarized light wave which does not bear the downlink signal, no cross-talk from the downlink contaminates the uplink signal. At the BS, it is detected by a high-speed photoelectric diode (PD) to generate a 15 GHz intermediate frequency (IF) and a 63 GHz radio frequency (RF) signal. This reduces the system complexity and cost. The simulation with 2.5 Gbps NRZ signal transmission exhibits good performance both at 15 GHz (Ku-band) and 63 GHz (V-band).

Polarization division multiplexing for optical data communications

“…In this research, we investigate the viability of polarization division multiplexing (PDM), the separation of distinct parallel optical communication channels through the polarization properties of light [5,22,25,63,73]. Two or more linearly polarized optical signals (at different polarization angles) are transmitted through a common medium, filtered using aluminum nanowire optical filters fabricated on-chip, and received using individual silicon photodetectors (one per channel).…”

“…5 shows bottom view of printed wiring board (PWB) that was designed together with the custom chip for testing purposes. The chip is placed in socket that is soldered on the PWB.…”