Optimum configuration and characteristic comparisons of multiwavelength erbium-doped fiber amplifier for hybrid digital/analog WDM systems
作者： Tsair-Chung Liang , Chia-Hsiung Chang , Yung-Kuang Chen
DOI: 10.1016/S0030-4018(00)00594-0
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摘要: Abstract We theoretically investigate various configurations of erbium-doped fiber amplifier (EDFA) for simultaneously amplifying AM-VSB analog CATV signal and multiple optical digital baseband signals in hybrid wavelength-division multiplexing (H-WDM) systems. The design criterion H-WDM EDFA is to keep the differential channel output power among channels at ≤0.2 dB while providing a high saturated ≥60 mW low noise figure ≤4 channel. A total nine are examined compared this work, including dual-forward, dual-backward, different bidirectional pumping schemes, each with without midway isolator. investigation provides optimum configuration both in-line amplifiers analog/digital WDM lightwave Such technology allows direct transmission AM-VSB/QAM video traffic from backbone supertrunking networks hybrid-fiber-coaxial (HFC), fiber-to-the-curb (FTTC), or fiber-to-the-home (FTTH) broadband access complicated costly format conversion head-end hubs.
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