Photonic crystal-based optical decoders: design methods and prospective Hamed Alipour-Banaei, Somaye Serajmohammadi and Farhad Mehdizadeh Eur. Phys. J. Plus, 136 9 (2021) 970 Published online: 24 September 2021 DOI: 10.1140/epjp/s13360-021-01949-0