Abstract
Three radio over fiber link types are compared to assess their relative
performance for the optical transmission of next generation wireless signals
having multiple wideband radio channels with high-level modulation. These
links differ in their choice of modulation device; either a directly
modulated laser (DML) or external modulation using a Mach–Zehnder
modulator (MZM) or a reflective semiconductor optical amplifier (RSOA). The
DML and RSOA link types are shown to suffer minimal degradation of the
uplink wireless range compared to the baseline value without an optical
link, using optimum components in terms of cost and performance. The optimum
technology depends on the relative merits of simplicity (DML) or optical
network architecture flexibility (RSOA).
© 2010 IEEE
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