Editorial
SEDOPTICA Editorial
Lluís F. Marsal
Newsletters
SEDOPTICA Newsletters
María S. Millán, Luis Plaja e Ignacio Moreno
Informe de comités
Woman in Optics and Photonics committee's report
Verónica González-Fernández, Martina Delgado, Beatriz Santamaría
Obituario
In Memoriam Emilio Gómez González
C. Bellver-Cebreros, M. Rodríguez-Danta
Espectroscopía
Decoupling of Light Scattering and Absorption Contributions to Extinction in Pickering Emulsions
Diego M. Jiménez, Mavis L. Montero, William E. Vargas
Técnicas de la imagen
Optimized process for QR codes multiplexing and encryption
J. Vargas Valencia, A. Granados López1
Comunicaciones ópticas
BER improvement in 5G MU MIMO-OFDM systems using channel coding techniques
Mohammad A. Abdallah, Mohammad Nassr, Mohammad Anbar, Hamid Ali Abed Alasadi
La óptica en la educación
UNED (National Distance Education University) and the International Year of Light and light based Technologies and the International Day of Light in Spain
Carmen Carreras Béjar, Juan Pedro Sánchez Fernández
Historia de la óptica
Óptica Pura y Aplicada through the purple filter
Martina Delgado-Pinar, Rosa Ana Pérez-Herrera, Verónica González-Fernández
Noticias
OPA in the 21st century. Interview with the last three editors
Lluis F. Marsal, David Mas, Ignacio Moreno