His research activities and interests cover a wide range of subjects related to optical communications including microwave photonics (MWP), integrated optics, optical signal processing, and more recently quantum cryptography and quantum-photonic information processing. He has published over 550 papers in international refereed journals and conferences. He is the author of 15 patents. He was the general chair of the 41st European Conference on Optical Communications (ECOC) held in Valencia in 2015 and of the IEEE International Topical Meeting on Microwave Photonics in 2009.
He has been a member of the Technical Program Committees of over 50 international conferences in the field of photonics including ECOC, the Optical Fiber Conference (OFC), the Integrated Optics and Optical Communications Conference (IOOC), CLEO Europe, and the Optoelectronics and Communications Conference (OECC).
Professor Capmany is a Fellow of the IEEE, a Fellow of the Optical Society of America (OSA). He is also a founder and chief innovation officer of the spin-off company VLC Photonics (www.vlcphotonics.com) dedicated to the design of photonic integrated circuits and EPHOOX (www.ephoox.com) dedicated to MWP instrumentation.
Professor Capmany is the 2012 King James I Prize Laureate on novel technologies, the highest scientific distinction in Spain, for his outstanding contributions to the field of microwave photonics and in 2016 he was awarded with a European Research Council (ERC) Advanced Grant.
He was a member of the IEEE Photonics Society Board of Governors (2008-10) and a distinguished lecturer for the 2013-14 term, an associate Editor of IEEE Photonics Technology Letters (2010-2016) and the IEEE Journal of Lightwave Technology (2016-2018). He is the new Editor-in-Chief of the IEEE Journal of Selected Topics in Quantum Electronics.