针对在超长距10G光传输系统中,输出端光谱中发现明显的谱肩现象,并导致系统光信噪比限制的问题,本文分析提出其主要产生机制是由于入纤端10G小型可插拔(10 Gigabit Small Form Factor Pluggable,XFP)光调制模块所发出的调制信号与输入...针对在超长距10G光传输系统中,输出端光谱中发现明显的谱肩现象,并导致系统光信噪比限制的问题,本文分析提出其主要产生机制是由于入纤端10G小型可插拔(10 Gigabit Small Form Factor Pluggable,XFP)光调制模块所发出的调制信号与输入信号因满足相位匹配条件而导致带内简并四波混频现象的出现,进而在输出端与信号光谱合成成为明显谱肩。研究结果显示,随着入纤信号光传输功率的提高,谱肩现象愈加明显,并成为限制光传输功率大小的主导机制。本文基于四波混频理论通过数值仿真,将理论计算结果与实验数据拟合,深入分析了带内四波混频效应对光传输系统的限制因素,并进而提出了有效抑制此限制因素的三种方法。展开更多
We demonstrate a novel all-optical half-adder based on two semiconductor optical amplifiers(SOAs).Two optical band-pass filters are used to select the two idlers generated by four-wave mixing(FWM) effect of the first ...We demonstrate a novel all-optical half-adder based on two semiconductor optical amplifiers(SOAs).Two optical band-pass filters are used to select the two idlers generated by four-wave mixing(FWM) effect of the first SOA.Therefore,the AND gate and XNOR logic are realized simultaneously.The second SOA acts as a NOT gate,in which the NOR logic is achieved with the input of the logic XNOR.As a result,the output is the sum of the two input bits and the carry.In the experiment,all-optical half-addition calculation is achieved between two 10 Gb/s signals.展开更多
文摘针对在超长距10G光传输系统中,输出端光谱中发现明显的谱肩现象,并导致系统光信噪比限制的问题,本文分析提出其主要产生机制是由于入纤端10G小型可插拔(10 Gigabit Small Form Factor Pluggable,XFP)光调制模块所发出的调制信号与输入信号因满足相位匹配条件而导致带内简并四波混频现象的出现,进而在输出端与信号光谱合成成为明显谱肩。研究结果显示,随着入纤信号光传输功率的提高,谱肩现象愈加明显,并成为限制光传输功率大小的主导机制。本文基于四波混频理论通过数值仿真,将理论计算结果与实验数据拟合,深入分析了带内四波混频效应对光传输系统的限制因素,并进而提出了有效抑制此限制因素的三种方法。
基金supported by the National Nature Science Foundation of China (Grant No.60572013 and 60736035)the National "863"Program of China (Grant No. 2007AA01Z272)partly supported by the Program for New Century Excellent Talents in Ministry of Education of China
文摘We demonstrate a novel all-optical half-adder based on two semiconductor optical amplifiers(SOAs).Two optical band-pass filters are used to select the two idlers generated by four-wave mixing(FWM) effect of the first SOA.Therefore,the AND gate and XNOR logic are realized simultaneously.The second SOA acts as a NOT gate,in which the NOR logic is achieved with the input of the logic XNOR.As a result,the output is the sum of the two input bits and the carry.In the experiment,all-optical half-addition calculation is achieved between two 10 Gb/s signals.
