Abstract
An advanced low cost bidirectional wavelength-division-multiplexing hybrid fiber-wired/fiber-wireless/fiber-VLC/fiber-IVLC transmission system based on a self-seeded InP based quantum dash-laser diode (QD-LD) and reflective semiconductor amplifier (RSOA) is proposed and experimentally demonstrated. In this paper, 10 Gbps/50 GHz MMW and 10 Gbps/100 GHz MMW over 50-km SMF as well as 40-m optical and 10-m radio-frequency (RF) wireless link, and 10 Gbps baseband (BB) data stream over 50-km SMF are successfully transmitted by employing self-injection locking scheme on QD-LD in downlink. RSOA is utilized at the receiving site to broadcast 2.5 Gbps data signal over 50-km SMF plus 10-m free-space link in uplink by reusing the carrier, that makes the system cost-effective. High receiver sensitivity and signal-to-noise ratio (SNR), low bit-error-rate (BER) and low error vector magnitude (EVM), and excellent eye-diagrams in our proposed network build the system more reliable and stable with acceptable performance. Therefore, proposed hybrid transmission system could become prominent alternative not only for progressive fiber backbone network but also for RF/optical wireless feeder networks.
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