Design of a photonic crystal 4 × 2 encoder based on all-optical NOT and XOR logic gates. - Shahi, Mohsen; Sepahvandi, Vahid; Saghaei, Hamed; Nurmohammadi, Tofiq; Bahloul, Faouzi; Jafari, Behnam; Karar, Abdullah S.; Soroosh, Mohammad; Adibnia, Ehsan (Optical & Quantum Electronics, 2025)