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In this paper, a real-time online fault monitoring technique for chaos-based passive optical networks (PONs) is proposed and experimentally demonstrated. The fault monitoring is performed by the chaotic communication signal. The proof-of-concept experiments are demonstrated for two PON structures, i.e., wavelength-division-multiplexing (WDM) PON and Ethernet PON (EPON), respectively. For WDM PON,...
Handwritten numeral recognition utilizing optoelectronic feedback reservoir computing is proposed and investigated in this paper. From zero to nine, ten kinds of handwritten numerals have been successfully recognized by numerical simulations. The influence of system parameters on the recognition results has been investigated by adjusting the various parameters of the system. The feedback coefficient...
The long-haul and low-cost chaotic optical secure communications with 1.25 Gbits/s-message and 2.5 Gbits/s-message are experimentally realized using discrete optical components, and the transmission distance reaches 143 km and 25 km, respectively. The former is the longest transmission distance for the chaos-based optical secure communication equipment in the world to the best of our knowledge.
We demonstrate for the first time WDM-PON secure optical communication based on chaotic-laser, and real-time online fiber-fault detection and location simultaneously, which will significantly improve WDM-PON reliability and reduce the cost of operation and maintenance.
A novel method for fiber-fault detection with chaotic laser theory is demonstrated and is verified by simulation and experimental results. The chaotic light is generated by optoelectrical feedback, and the simulation results show that the RF spectrum of the generated chaotic light is broad and flat. The PSLR and the FWHM of the autocorrelation curve are 20 and 0.01ns, respectively. Experimental results...
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