共查询到16条相似文献,搜索用时 58 毫秒
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给出了一种利用TSMC 0.18μm CMOS工艺实现的2.5 Gb/s跨阻前置放大器.此跨阻放大器的增益为66.3 dBΩ,3 dB带宽为2.18 GHz,等效输入电流噪声为112.54 nA.在标准的1.8 V电源电压下,功耗为7.74 mW.输入光功率为-10 dBm时,PCML单端输出信号电压摆幅为165 mVp-p.模拟结果表明该电路可以工作在2.5 Gb/s速率上. 相似文献
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基于0.5μm GaAs PHEMT标准工艺研制了850nm单片集成光接收机前端,集成方式为PIN光探测器和跨阻放大器。论文依据已发表的文献数据为基础并借助SILVACO公司的模拟软件建立探测器模型,实验结果表明,模型和实测结果对比有较好的一致性。光接收机最高工作速率5Gb/s,其中,探测器光敏面直径50μm,电容0.51pF,暗电流小于30nA。跨阻放大器-3dB带宽接近10GHz,跨阻增益约43dBΩ,最小等效输入噪声电流密度约为17.6pA/Hz^1/2。 相似文献
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提出并实现了一种利用抽样法实现高速数字通信系统比特误码率测试的新方法,可以利用低速误码仪对高速系统的误码率进行测量和分析。已利用15Mb/s误码仪实现了2.5Gb/s的误码测量,并成功地应用于我国第一个2.5Gb/sIM/DD光纤传输实验系统的研制工作中。 相似文献
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109公里2.5Gb/s无中继IM/DD光纤传输实验系统 总被引:2,自引:1,他引:1
对国内首次2.488Gb/s光纤传输系统实现结果进行了报道。系统工作波长1550nm,利用常规单模光纤实现了109公里无中继传,要用IM/DD方式,接收机灵敏度为-30.5dBm. 相似文献
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Amer Kotb 《Journal of Modern Optics》2020,67(12):1138-1144
In this paper, the unique features of the reflective semiconductor optical amplifiers (RSOAs) are exploited to numerically simulate the ultrafast performance of an all-optical NOT-AND (NAND) logic gate for the first time using a return-to-zero modulation format at a data rate of 120 Gb/s. A comparison is made between RSOAs and conventional SOAs through studying the dependence of the gate’s quality factor (QF) on the critical operational parameters, including the effects of both amplified spontaneous emission and operating temperature to get more realistic results. The results show that the all-optical NAND logic gate can be executed at 120 Gb/s using the RSOAs scheme with a higher QF than when using conventional SOAs. 相似文献
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报导了利用行波半导体激光放大器进行的140Mbit/s传输实验,对光放大器增益-电流、增益-输入功率以及输出-输入功率特性进行了测试,并分析了光滤波器对传输性能的影响。 相似文献
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Two-way time transfer through 2.4 Gb/s optical SDH system 总被引:1,自引:0,他引:1
Kihara M. Imaoka A. Imae M. Imamura K. 《IEEE transactions on instrumentation and measurement》2001,50(3):709-715
An experiment to transfer time and frequency over 2.488 Gb/s synchronous digital hierarchy (SDH) systems using a 175-km commercial optical fiber cable has been set up by Communication Research Laboratory (CRL) and Nippon Telegraph and Telephone Corporation (NTT) Laboratory. We confirm that the frequency stability of the time comparison data is 10-12/square root of tau for averaging times above 10 s. This stability equals that of the cesium frequency standard (HP5071A) used in this experiment. This means that the system can transfer the cesium frequency standard signal without deterioration. The time comparison resolution is of the order of 10-11 s (square root of time variance). The long-term stability of this system is expected to be better than 1 ns, including the temperature dependence of time information transmitters and receivers. Time comparison results agree well with GPS common-view results. Time accuracy is held to within 32 ns (this includes the anticipated time deviation caused by network elements) 相似文献