Radio over WDM-PON by spatial multiplexing in few mode fiber

Abstract

In this paper, we propose mode division multiplexing in radio over fiber transmission system to increase the channel capacity in the uplink of wavelength division multiplexing (WDM) passive optical networks (PONs). The experiment is demonstrated in a 2×2 multiple input multiple output (MIMO) OFDM radio over fiber system including both wireless transmission and two-mode few-mode fiber (FMF) transmission. The MIMO digital signal processing algorithm can successfully compensate the crosstalk induced in wireless and FMF transmissions.