All-optical logic NOR gate using a single quantum-dot SOA-assisted an optical filter
All-optical logic NOR gate using a single quantum-dot SOA-assisted an optical filter
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DOI：
10.1007/s11082-018-1384-5
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发表时间：
2018-02
影响因子：
3
通讯作者：
K. Komatsu;G. Hosoya;H. Yashima
中科院分区：
文献类型：
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作者：
K. Komatsu;G. Hosoya;H. Yashima
我们使用单量子点半导体光放大器 (QD-SOA) 和光滤波器 (OF) 彻底探索了用于 160 Gb/s 归零高斯数据信号的超快全光 NOR 门的特性。在这个提出的方案中，除了数据信号作为泵之外，我们还采用光学时钟信号作为探针，在泵之间执行布尔“或非”函数。通过数值模拟，我们研究并评估了各种关键因素对消光比和 Q2 因子的影响。这使我们能够指定时钟波长的裕度、数据和时钟信号的峰值功率、电流密度、从激发态到基态的电子弛豫时间、线宽增强因子、QD-SOA的小信号增益、OF带宽和阶次、数据信号和时钟之间的到达时间差的允许范围以及放大自发发射的影响。此外，我们证明所提出的器件可以应用于多输入或非门。结果表明，当满足指定条件时，所提出的或非门可以实现逻辑正确性和高质量。
We thoroughly explore the characteristics of an ultrafast all-optical NOR gate for 160 Gb/s return-to-zero Gaussian data signals using a single quantum-dot semiconductor optical amplifier (QD-SOA) and an optical filter (OF). In this proposed scheme, we employ an optical clock signal as a probe in addition to data signals as pumps between which the Boolean NOR function is executed. By conducting numerical simulations, we investigate and evaluate the effects of various critical factors on the extinction ratio andQ2-factor. This enables us to specify the margins of clock wavelength, peak power of data and clock signals, current density, electron relaxation time from the excited state to the ground state, linewidth enhancement factor, small signal gain of QD-SOA, OF bandwidth and order, the permissible extent of arrival time difference between data signals and clock, and the effect of amplified spontaneous emission. Moreover, we demonstrate that the proposed device can be applied to a multiple-input NOR gate. The results show that the proposed NOR gate can be achieved with both logical correctness and high quality when the specified conditions are satisfied.