当前位置: X-MOL 学术Opt. Quant. Electron. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
All-optical switchable logic gate using a single QD-SOA for RZ-BPSK signal inputs
Optical and Quantum Electronics ( IF 3 ) Pub Date : 2021-04-26 , DOI: 10.1007/s11082-021-02892-1
Akira Nabeyama , Hiroyuki Yashima

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.



中文翻译:

使用单个QD-SOA的RZ-BPSK信号输入的全光可切换逻辑门

在本文中,我们提出了一种使用单量子点半导体光放大器(QD-SOA)的全光可切换逻辑门。该逻辑门具有用于逻辑运算符和输入数量的开关功能。通过引入相移键控信号来实现所提出电路的多功能性。该门由单个QD-SOA,单个光学带通滤波器,单个3dB耦合器和单个功率组合器构成。最终输出是归零开关键控信号。基于数值模拟,我们说明了逻辑运算符和输入数量都可以通过外部信号进行控制。此外,我们证明了放大的自发发射噪声对消光比(ER)和品质因数(Q-factor)的影响。更多,我们根据ER和Q因子评估了建议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因数的值比两输入操作中获得的Q因数的值更好。所提出的配置具有多个优点,例如质量均匀,电路复杂度低和多功能性。

更新日期:2021-04-27
down
wechat
bug