Design and analysis of all- optical dual control dual SOA Tera Hertz asymmetric demultiplexer based half adder
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Design and analysis of all‑ optical dual control dual SOA Tera Hertz asymmetric demultiplexer based half adder Kousik Mukherjee1 · Kajal Maji1,2 · Mrinal Kanti Mandal2 Received: 25 February 2020 / Accepted: 29 August 2020 © Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract Semiconductor Optical Amplifier based half adder in dual control configuration in a nonlinear optical loop mirror is proposed in this communication at 100 Gbps rate. The device is analyzed numerically and Extinction Ratio (ER ~ 81 dB), Contrast Ratio (CR ~ 82 dB), Q value (Q ~ 85 dB) are calculated and their dependence on control pulse energy and spontaneous noise factor is studied. Large relative eye opening of the order of 99.52% for SUM and 95.23% for CARRY output respectively ensure practical feasibility of this device. Almost negligible bit error rate and power penalty make this device suitable for all optical communication systems. Keywords Dual control TOAD · Optical logic gate · Half adder · Semiconductor optical amplifier
1 Introduction Present day communication system requires higher speed and reliability and electronic systems are possibly about to reach their bottleneck. The core of the next generation all optical communication systems (AOCS) are the switches with an extreme compactness and high- speed response (Cong et al. 2018). For development of such AOCS, design of highspeed optical logic gates and processors are basic requirements. Many proposals of such devices are made in last few years (Kotb and Zoiros 2019; Kumar and Medhekar 2019; Ramachandran et al. 2018; R-Salgado and G-Castrejon 2017; Rani et al. 2016; Gayen et al. 2014) using different types of switching. Tera Hertz optical Asymmetric Demultiplexer (TOAD) using Semiconductor Optical Amplifier (SOA) is an important device for designing all optical logic gates due its compact size, low switching energy and high speed of operation(Gayen et al. 2014; Upadhyay et al. 2018; Sivakumar and Li 2019; Mondal https://doi.org/10.1142/S0218126619501561). Various kinds of logic gates and processors are designed using TOAD based on single SOA (Gayen et al. 2014; Mondal 2014; Bhattacharya et al. 2016; Goutham et al. 2016; Kaur and Bhatia 2015) using different types of * Kousik Mukherjee [email protected] 1
Department of Physics, Banwarilal Bhalotia College, Asansol, India
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National Institute of Technology Durgapur, Durgapur, India
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encoding techniques for representation of states of information. All optical adders are very important building blocks for all optical communication and computation systems. Adder and Subtractor find applications in arithmetic logic unit (ALU), counters, encryption/ decryption systems, optical header processing systems etc. Semiconductor Optical Amplifier (SOA) is an attractive nonlinear device due to its attractive properties like small size, high gain, and application in all-optical signal processing (Connelley 2007). Few proposals for all
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