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The world's fastest BB84 QKD through a 97-km installed fiber was demonstrated using PLC-based interferometers, SSPDs and WDM synchronization. By suppressing nonlinear crosstalk induced by the multiplexed clock, QBER of 2.8% was obtained after 97-km transmission.
This paper reduces the impact of backreflection in WDM single-fiber loopback access networks by using a gain-saturated SOA. We presented the concept and experimentally confirmed that the gain-saturated SOA significantly improves the SNR of upstream signal
A novel control scheme for fast laser diode (LD) wavelength switching with rapid stabilisation is proposed, which is the key technology for wavelength-division multiplexing (WDM) data cell transfer networks. The obtained characteristics are suitable for 600 Mbit/s asynchronous transfer mode (ATM) cell transfer networks. The proposed control scheme can be applied to over 10 Gbit/s cell speed networks...
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