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<p>An all-optical Semiconductor Optical Amplifier (SOA) based NOR gate, RS, and JK flip flop have been presented in this paper. First, the NOR gate is designed, and then the gate is utilized in designing an RS and JK flip-flop. The switching operation is based on the cross-polarization modulation (XpolM) effect of SOA. The operational speed of the NOR gate, RS, and JK flip-flops circuits is high (~ 100&#xa0;Gb/s). The small size (~ 1&#xa0;mm) and lower power requirement (optical &lt; 1&#xa0;mW, injection current ~ 160&#xa0;mA) of SOAs make the NOR gate and flip-flop circuits simple and compact for modern optical ICs. The Quality Factor (QF), Extinction Ratio (ER), Contrast Ratio (CR), etc., of the proposed NOR gate, have been calculated (QF ~ 23&#xa0;dB, ER ~ 25&#xa0;dB, and CR ~ 32&#xa0;dB) and are suitable for practical uses. Different metric (QF, ER, and CR) variations have been shown against the circuit parameters like probe power, pump power, Spontaneous Emission Factor, etc.</p>

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Design of all-optical RS and JK flip-flop with semiconductor optical amplifier-based NOR gate

  • 期刊论文

  • 发表日期：

    2025年7月19日

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  • A. Raja,
  • K. Mukherjee,
  • J. N. Roy

摘要

An all-optical Semiconductor Optical Amplifier (SOA) based NOR gate, RS, and JK flip flop have been presented in this paper. First, the NOR gate is designed, and then the gate is utilized in designing an RS and JK flip-flop. The switching operation is based on the cross-polarization modulation (XpolM) effect of SOA. The operational speed of the NOR gate, RS, and JK flip-flops circuits is high (~ 100 Gb/s). The small size (~ 1 mm) and lower power requirement (optical < 1 mW, injection current ~ 160 mA) of SOAs make the NOR gate and flip-flop circuits simple and compact for modern optical ICs. The Quality Factor (QF), Extinction Ratio (ER), Contrast Ratio (CR), etc., of the proposed NOR gate, have been calculated (QF ~ 23 dB, ER ~ 25 dB, and CR ~ 32 dB) and are suitable for practical uses. Different metric (QF, ER, and CR) variations have been shown against the circuit parameters like probe power, pump power, Spontaneous Emission Factor, etc.