Title: Design of logic circuit for all optical sampling gate based on FIBRE-FWM nonlinear fibre

Authors: Yunhu Wu; Yarang Yang; Wei Zheng; Saidiwaerdi Maimaiti; Hui Peng

Addresses: College of Physics and Electrical Engineering, Kashi University, Kashi, 844000, China ' College of Physics and Electrical Engineering, Kashi University, Kashi, 844000, China ' College of Physics and Electrical Engineering, Kashi University, Kashi, 844000, China ' College of Physics and Electrical Engineering, Kashi University, Kashi, 844000, China ' College of Physics and Electrical Engineering, Kashi University, Kashi, 844000, China

Abstract: To solve the problems of limited sampling bandwidth and low sampling rate in existing optical sampling techniques, an all optical sampling gate logic circuit design based on FIBRE-FHM nonlinear fibre is adopted to measure high-speed optical signals, improving the bandwidth of traditional sampling methods. This design addresses significant limitations posed by electronic bottlenecks in high-speed optical signal measurement. Utilising the four-wave mixing (FWM) model of a semiconductor optical amplifier (SOA), a sampling gate is realised via a logic circuit leveraging nonlinear effects. These results confirm that after nonlinear processing, the pulse width increases by 80% to 0.1 μs. At 2 dBm signal light power, idle frequency light L′2 achieves a maximum conversion power of -11.7 dBm, while at 13 dBm, light L′1 has a minimum conversion power of -16.2 dBm. The logic circuit design for all optical sampling gate based on FIBRE-FWM nonlinear fibre effectively expands bandwidth.

Keywords: light sampling; nonlinear fibre; logic circuit; semiconductor optical amplifier; SOA; four-wave mixing; FWM.

DOI: 10.1504/IJBIC.2025.149058

International Journal of Bio-Inspired Computation, 2025 Vol.26 No.2, pp.119 - 129

Received: 22 Dec 2023
Accepted: 21 May 2024
Published online: 13 Oct 2025 *

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