Abstract :
This Special Issue contains a selection of extended papers from the Fifteenth European Conference on Integrated Optics held on 7??9 April 2010. The First European Conference on Integrated Optics in the series was held in London, UK thirty years ago, and the conference has been held biannually across Europe since then, the most recent being ECIO??10 in Cambridge. The IET ?? and its forerunner, the IEE ?? have played a sponsoring role in both the first and the most recent of the meetings.