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首页> 外文期刊>Optical and quantum electronics >All-optical switchable logic gate using a single QD-SOA for RZ-BPSK signal inputs
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All-optical switchable logic gate using a single QD-SOA for RZ-BPSK signal inputs

机译：所有光学切换逻辑门使用单个QD-SOA用于RZ-BPSK信号输入

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摘要

In this paper, we propose an all-optical switchable logic gate using a single quantum-dot semiconductor optical amplifier (QD-SOA). This logic gate has switching functions for logical operators, and for the number of inputs. The multifunctionality of the proposed circuit is achieved by introducing the phase-shift keying signal. This gate is constructed using a single QD-SOA, single optical bandpass filter, single 3-dB coupler, and single power combiner. The final output is a return-to-zero on-off keying signal. Based on numerical simulations, we illustrate that both the logical operators and the number of inputs can be controlled with external signals. In addition, we demonstrate the effect of the amplified spontaneous emission noise on the extinction ratio (ER) and the quality factor (Q-factor). Further, we evaluate the phase error tolerance of the proposed configuration in terms of the ER and Q-factor. The results show that switching of the logical operators does not affect the quality of the output signal; further, the values of the Q-factor in the three-input operation are better than those obtained with the two-input operation. The proposed configuration has several advantages such as uniform quality, low circuit complexity, and multifunctionality.
机译：在本文中，我们使用单量子点半导体光放大器（QD-SOA）提出了全光切换逻辑栅极。此逻辑门具有用于逻辑运算符的切换功能，以及输入的数量。通过引入相移键控信号来实现所提出的电路的多功能性。该门是使用单个QD-SOA，单光带通道滤波器，单3-DB耦合器和单功率组合器构建的。最终输出是返回零开关键控信号。基于数值模拟，我们说明了逻辑运算符和输入的数量可以用外部信号控制。此外，我们证明了扩增的自发发射噪声对消光比（ER）和质量因数（Q系数）的影响。此外，我们在ER和Q因子方面评估所提出的配置的相位误差容限。结果表明，逻辑运算符的切换不会影响输出信号的质量;此外，三输入操作中的Q系数的值优于使用双输入操作获得的值。所提出的配置具有诸如均匀的质量，低电路复杂性和多功能等优点。

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