Periods of Energy Exchange Under the Mutual Effects of Four-Wave Mixing, Self-Phase Modulation and Cross-Phase Modulation. - Kasapeteva, Zara; Dakova-Mollova, Anelia; Dakova, Diana; Kovachev, Kamen; Kovachev, Lubomir; Biswas, Anjan (Optics (2673-3269), 2026)