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All-optical XOR and AND logic gates based on optically pumped semiconductor optical amplifiers.

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Title: All-optical XOR and AND logic gates based on optically pumped semiconductor optical amplifiers.
Authors: Kotb, Amer1,2 (AUTHOR) amer.kotb@xjtlu.edu.cn, Zoiros, Kyriakos E.3 (AUTHOR)
Source: Optical & Quantum Electronics. Apr2026, Vol. 58 Issue 4, p1-20. 20p.
Subjects: Semiconductor optical amplifiers, Optical pumping, Optical switching, Photonics, Interferometers, Optical computing, Logic circuits
Abstract: We present a numerical study of all-optical logic gates implemented in a Mach–Zehnder interferometer (MZI) configuration using optically pumped semiconductor optical amplifiers (OP–SOAs). The coupled rate equations, which account for carrier density, carrier heating, and spectral hole burning effects, are solved under optical pumping conditions to evaluate the performance of XOR and AND logic operations. The optical pump facilitates faster carrier recovery and enhances gain dynamics, supporting stable logic gate operation. Simulation results indicate that the proposed XOR and AND gates achieve output quality factors of 53.70 and 22.14, respectively, at a data rate of 80 Gb/s. Additionally, the gates' performance is analyzed with respect to key operational parameters, demonstrating their robustness and suitability for practical applications. These results highlight the potential of OP–SOAs as compact, integrated platforms for high-speed all-optical logic circuits. [ABSTRACT FROM AUTHOR]
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Database: Engineering Source
Description
Abstract:We present a numerical study of all-optical logic gates implemented in a Mach–Zehnder interferometer (MZI) configuration using optically pumped semiconductor optical amplifiers (OP–SOAs). The coupled rate equations, which account for carrier density, carrier heating, and spectral hole burning effects, are solved under optical pumping conditions to evaluate the performance of XOR and AND logic operations. The optical pump facilitates faster carrier recovery and enhances gain dynamics, supporting stable logic gate operation. Simulation results indicate that the proposed XOR and AND gates achieve output quality factors of 53.70 and 22.14, respectively, at a data rate of 80 Gb/s. Additionally, the gates' performance is analyzed with respect to key operational parameters, demonstrating their robustness and suitability for practical applications. These results highlight the potential of OP–SOAs as compact, integrated platforms for high-speed all-optical logic circuits. [ABSTRACT FROM AUTHOR]
ISSN:03068919
DOI:10.1007/s11082-026-08754-y