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