Abstract
We experimentally investigate the performance of 60 GHz double sideband (DSB) radio over fiber (RoF) links that employ dispersion compensating fiber (DCF). Error free transmission of 3 Gbps signals over 1 m of wireless distance is reported. In order to overcome experimentally observed chromatic dispersion (CD) induced power fading of radio frequency (RF) signal, we propose a method for improvement of RF carrier-to-noise (C/N) ratio through introduction of a degree of RF frequency tunability. Overall results improve important aspects of directly modulated RoF systems and demonstrate the feasibility of high carrier frequency and wide bandwidth RF signals delivery in RoF links including DCF fiber. Error free performance that we obtain for 3 Gbps amplitude shift-keying (ASK) signals enables uncompressed high-definition 1080p video delivery.
Highlights
The introduction of diverse bandwidth-demanding services requires an upgrade of current networks in order to provide higher bitrates for the end-user
We experimentally investigate the performance of 60 GHz double sideband (DSB) radio over fiber (RoF) links that employ dispersion compensating fiber (DCF)
We show through experiment and simulation that the use of DCF for a lightwave modulated by an radio frequency (RF) signal will be severely constrained by chromatic dispersion (CD) induced RF power fading
Summary
The introduction of diverse bandwidth-demanding services requires an upgrade of current networks in order to provide higher bitrates for the end-user. We consider that upconversion is made at the RN serving as an interface between metro and access parts of the network In this scenario, a coil of dispersion compensating fiber (DCF) could be installed at the end-user site to compensate the effects of chromatic dispersion on a digitally modulated lightwave. This paper is organized as follows: in Section 2 we present the laboratory setup and experimental performance assessment of the DSB 60 GHz DCF RoF link.
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