1. SYMBOL-LEVEL PHYSICAL-LAYER ENCRYPTION DRIVEN BY COUPLED CHAOTIC MAPS FOR FIBER-THz INTEGRATED LINKS.
   Yang, Z., Wang, D., Zhou, S., Wang, X., Yu, N. and Yang, X. 2026. Ukr. J. Phys. Opt. 27: 04001 – 04015.
   doi: 10.3116/16091833/Ukr.J.Phys.Opt.2026.04001


2. INTELLIGENT SOYBEAN SEED FRACTION SEGMENTATION SYSTEM BASED ON THE INTEGRATION OF SPECTRAL SIGNATURES AND PRECISION NEURAL NETWORK ARCHITECTURES.
   Stepanenko, S. and Kuzmych, A. 2026. Ukr. J. Phys. Opt. 27: 04016 – 04033.
   doi: 10.3116/16091833/Ukr.J.Phys.Opt.2026.04016


3. THE INFLUENCE OF QUANTUM PARTICLE MASS ON THE DISCRETE ENERGY SPECTRUM OF MULTILAYER STRUCTURES: A FOURIER TRANSFORM APPROACH.
   Fitio, V., Yaremchuk, I., Shchetinin, M., Hladun, M. and Stakhira, P. 2026. Ukr. J. Phys. Opt. 27: 04034 – 04045.
   doi: 10.3116/16091833/Ukr.J.Phys.Opt.2026.04034


4. DETERMINATION OF POYNTING VECTOR CHARACTERISTICS.
   Mokhun, I., Danko, V., Kovalenko, A., Galushko, Yu. and Karabchyivskyi, M.. 2026. Ukr. J. Phys. Opt. 27: 04046 – 04053.
   doi: 10.3116/16091833/Ukr.J.Phys.Opt.2026.04046


5. QUIESCENT VECTOR OPTICAL SOLITONS WITH NONLINEAR DISPERSION.
   Arnous, A.H., Murad, M.A.S., Yildirim, Y. and Biswas, A. 2026. Ukr. J. Phys. Opt. 27: 04054 – 04076.
   doi: 10.3116/16091833/Ukr.J.Phys.Opt.2026.04054


6. THERMAL-FEEDBACK-INDUCED TRANSMISSION SYMMETRY BREAKING IN AN ASYMMETRIC MICROCAVITY.
   She, Min and Shi, Guohao. 2026. Ukr. J. Phys. Opt. 27: 04077 – 04087.
   doi: 10.3116/16091833/Ukr.J.Phys.Opt.2026.04077


7. MACHINE LEARNING APPROACH FOR OPTICAL NON-DESTRUCTIVE NANOMETROLOGY OF NANO (MICRO) SCALE ROUGH SURFACES.
   Zenkova, C., Angelsky, O., Ivanskyi, D., Tkachuk, V., Ryabyi, P., Koniakhin, A., Ursuliak, Yu. and Hanson, S. 2026. Ukr. J. Phys. Opt. 27: 04088 – 04101.
   doi: 10.3116/16091833/Ukr.J.Phys.Opt.2026.04088


8. STOCHASTIC (3+1)-DIMENSIONAL SPATIO-TEMPORAL SOLITONS IN A GENERALIZED EFFECTIVE FIBER BRAGG-GRATING ENVELOPE MODEL.
   Metwally, A.S.M., Alngar, M.E.M., Shohib, R.M.A., Shirsath, S.E. and Biswas, A. 2026. Ukr. J. Phys. Opt. 27: 04102 – 04127.
   doi: 10.3116/16091833/Ukr.J.Phys.Opt.2026.04102


9. ANNEALING-INDUCED CRYSTALLIZATION OF SILVER THIOARSENITES AND SILVER MIGRATION IN Ag_x(As₂S₃)_1–X GLASSES .
   Azhniuk, Yu., Pogodin, A., Filep, M., Lopushansky, V., Izai, V., Kryshenik, V., Voynarovych, I., and Gomonnai A.V. 2026. Ukr. J. Phys. Opt. 27: 04128 - 04142.
   doi: 10.3116/16091833/Ukr.J.Phys.Opt.2026.04128


10. STRUCTURAL, ELECTRONIC AND INFRARED PHOTOLUMINESCENCE PROPERTIES OF Pb_1-xEu_xTe THIN FILMS: EXPERIMENTAL AND FIRST-PRINCIPLES STUDY.
    Mehrabova, M.A., Sadigov, R.M., Jahangirli, Z.A., Samadov, S.F., Abiyev, A.S., Hasanov, M.H., Hasanova, S.I. and Asadullayeva, S.G.. 2026. Ukr. J. Phys. Opt. 27: 04143 – 04154.
    doi: 10.3116/16091833/Ukr.J.Phys.Opt.2026.04143

1. INTRODUCTION TO THE SPECIAL ISSUE ON SINGULAR OPTICS MODERN TRENDS AND PROSPECTS OF SINGULAR OPTICS.
   Angesky, O.V. 2026. Ukr. J. Phys. Opt. 27: S1001 – S1002.
   doi: 10.3116/16091833/Ukr.J.Phys.Opt.2026.S1001


2. CONTROLLABLE LOCALIZATION AND MANIPULATION OF OPTICAL HOLLOW TRAPS BY MEANS OF OPTICAL-VORTEX DIFFRACTION.
   Angelsky, O., Bekshaev, A., Zenkova, C., Mokhun, I. and Zhang, X. 2026. Ukr. J. Phys. Opt. 27: S1003 – S1016.
   doi: 10.3116/16091833/Ukr.J.Phys.Opt.2026.S1003