List of Articles Photonic Bandgap Open Access Article Abstract Page Full-Text 1 - An All-Optical NOR Gate based on Two-Dimensional Photonic Crystals Esmat Rafiee Fatemeh Abolghasemi 10.30495/jopn.2023.31310.1275 Open Access Article Abstract Page Full-Text 2 - Ultra-Fast All-Optical Half Subtractor Based on Photonic Crystal Ring Resonators Mohammad Soroosh Atefeh Mirali Ebrahim Farshidi Open Access Article Abstract Page Full-Text 3 - Ultra-Fast All-Optical Symmetry 4×2 Encoder Based on Interface Effect in 2D Photonic Crystal Farzan Khatib Mohsen Shahi Open Access Article Abstract Page Full-Text 4 - Photonic Crystal Resonators in Designing Optical Decoders Mohammad Javad Maleki Mohammad Soroosh Gholamreza Akbarizadeh Fariborz Parandin Fatemeh Haddadan 10.30495/jopn.2023.32220.1296