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We propose two novel wavelength-division-multiplexed passive-optical-network (WDM-PON) architectures where subcarriers are employed to transmit downstream data and optical carriers are reused for upstream transmission. Architecture I is designed for the situation where two short distribution fibers are available between the remote node (RN) and each optical network unit (ONU), whereas Architecture...
Series of sedimentary hydrothermal-diplogenetic copper deposits have been found scattering in the region along the middle-lower reaches of the Yangtze River, and their metallogenetic mechanism is still in hot debate. In order to reveal the ore-forming kinetics of sedimentary process and hydrothermal superimposition, and evaluate the role of sedimentary pyrite in the enrichment and precipitation of...
Recently, Fabry-Perot laser diodes (FPLDs) injection-locked by spectrum sliced amplified spontaneous emission (ASE) noise as a low cost light source for wavelength division multiplexed passive optical network (WDM-PON) has been proposed and gained much attention. Spectrum sliced ASE source inherently suffers from intensity noise (IN). This IN is relative to the filter bandwidth of a spectrum sliced...
We propose and demonstrate a novel protection scheme for WDM passive optical networks based on sub-ring architecture. Experiment of 10 Gb/s downstream and 1.25 Gb/s upstream transmissions was carried out to verify the proposed protection scheme.
All-optical 4-ASK signal generation based on four-wave-mixing is demonstrated experimentally. It shows that extinction ratio of original binary signals determines the spacing between signal levels. Experimental results indicates the possibility of signal transmission over 160 km
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