Wavelength shifting in PONs with downstream signal remodulation is presented, allowing upstream transmission over trees with 25km feeder and 1:32 split with penalties <2dB,
originally Rayleigh backscattering limited. Side-mode suppression is analyzed for hybrid PONs.
CitationSchrenk, B.; Lázaro, J.; Prat, J. Wavelength conversion towards Rayleigh backscattering tolerant PONs via four-wave mixing in SOA-based ONUs. A: National Fiber Optic Engineers Conference. "National Fiber Optic Engineers Conference 2010". San Diego, CA: 2010.
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