Vol. 17 No. 3 (2025)

View Vol. 17 No. 3 (2025)

This issue of Photonics Letters of Poland presents a diverse collection of photonics research, ranging from signal processing in optical fiber sensors to nonlinear optics, the dynamic laser speckle technique, and microwave engineering. Tresna et al. demonstrate how Fast Fourier Transform in Python can effectively denoise LSPR spectra, improving heavy metal detection. Kasztelanic et al. explore second-order nonlinearity in alkali-glass fibers, revealing promising results for nonlinear photonic applications. Li et al. propose a liquid crystal-based delay line for millimeter-wave systems, offering stable dispersion control across a wide frequency range. Patel et al. present a novel and cost-effective approach for detecting low-level adulteration in commercial honey, which is highly relevant for practical applications in food authentication and quality control.

Published: 2025-09-30

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