Photonics applications and web engineering: WILGA 2021

Wilga 2021 Summer Symposium on Photonics Applications and Web Engineering was the 48th edition of the research and technical meetings series [1,2]. Traditionally, the whole week lasting annual series of technical conferences and topical sessions was scheduled to be held on 26 May – 02 June 2020 in Wilga resort near Warsaw, owned by the Warsaw University of Technology. Nearly 150 participants took part in all of the Wilga 2021 events, most of them being young researchers active in all aspects of photonics, electronics and ICT science and technology. Wilga Symposium also embraces hardware and software technologies associated with photonics like optics, optical engineering, optoelectronics, electronics and electrical engineering, mechatronics, chemical and material engineering, applied physics, industrial solutions and applications. Around 100 papers were presented during Wilga 2021, oral and poster. Out of this number, some papers chosen by authors are published in this volume of Proc. SPIE mostly related to photonics. The major change was that during Wilga 2020 and 2021 Symposia, during summer editions, no traditional large young researcher sessions at large were possible to be organized.