1. PHOTOCHROMISM OF DOPED Bi₁₂SiO₂₀ CRYSTALS.
   Т. V. Panchenko, M. P. Trubitsyn and V. Laguta. 2026. Ukr. J. Phys. Opt. 27: 01001 – 01015.
   doi: 10.3116/16091833/Ukr.J.Phys.Opt.2026.01001


2. A NEW PHOTONIC SCHEME FOR GENERATING 10-FOLD FREQUENCY MILLIMETER-WAVE SIGNALS BASED ON FOUR PARALLEL POLARIZATION MODULATORS.
   Dongfei Wang, Yang Mu, Weiping Zhu, Xiaoling Cheng, Ling Xu, Yu Wang, Jinju Tang, Cheng Yao, Xiaokun Yang and Xiangqing Wang. 2026. Ukr. J. Phys. Opt. 27: 01016 – 01026.
   doi: 10.3116/16091833/Ukr.J.Phys.Opt.2026.01016


3. COMPARATIVE ANALYSIS OF GRADED-INDEX AND STEP-INDEX OPTICAL FIBERS FOR STED MICROSCOPY.
   O. V. Angelsky, P. P. Maksymiak and S. P. Shchukin. 2026. Ukr. J. Phys. Opt. 27: 01027 – 01039.
   doi: 10.3116/16091833/Ukr.J.Phys.Opt.2026.01027


4. JUDD-OFELT ANALYSIS AND CONCENTRATION-DEPENDENT LUMINESCENCE QUENCHING BEHAVIOR OF Dy³⁺-DOPED NaYGeO₄ PHOSPHORS PREPARED BY SOLID-STATE REACTION.
   Shengyi Liu, Duan Gao, Jiade Dong, Han Yin, Haoyu Liu, Li Wang and Wenbin Song. 2026. Ukr. J. Phys. Opt. 27: 01040 – 01053.
   doi: 10.3116/16091833/Ukr.J.Phys.Opt.2026.01040


5. MORPHOLOGICAL ENGINEERING OF PLASMONIC NANOSTRUCTURES: SIMULATION OF OPTICAL RESPONSE FOR NANOPARTICLES WITH BASIC GEOMETRIES.
   T. Bulavinets, V. Grokhotov, I. Helzhynskyy, B. Bulavinets, P. Stakhira and I. Yaremchuk. 2026. Ukr. J. Phys. Opt. 27: 01054 – 01069.
   doi: 10.3116/16091833/Ukr.J.Phys.Opt.2026.01054