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试析‘子母船’与“大站化”管理模式
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作者 吴华 《南方水运》 1996年第3期14-18,共5页
本文主要通过介绍现有航道、航标、船舶的发展状况,以及对比的分析,说明了“大站化”的管理的可行性和有推广必要性。
关键词 船舶 管理 子母船 大站化 管理模式
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Multiple-frequency basestation RoF system based on po-larization multiplexed FWM in SOA
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作者 向玉 张崇富 +2 位作者 尹树华 陈晨 邱昆 《Optoelectronics Letters》 EI 2012年第6期464-467,共4页
An approach of multiple-frequency millimeter-wave(mm-wave)signal generation is proposed for radio-over-fiber(RoF)system with multiple-frequency basestations(MFBSs).Two groups of orthogonally polarized signals are inje... An approach of multiple-frequency millimeter-wave(mm-wave)signal generation is proposed for radio-over-fiber(RoF)system with multiple-frequency basestations(MFBSs).Two groups of orthogonally polarized signals are injected into a semiconductor optical amplifier(SOA),and subsequently ten new different wavelengths are generated via four-wave mix-ing(FWM)effect.At each MFBS,different wavelengths are filtered out using demultiplexer and then input to a photodiode(PD)to generate the mm-wave signals with the frequencies from 52 GHz to 68 GHz at the interval of 2 GHz.Simulation results verify that the proposed multiple-frequency generation for MFBS RoF system can work properly. 展开更多
关键词 Base stations DIODES Millimeter waves Signal generators
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