Welcome to FOAN 2013 - 4th International Work Shop on Fiber Optics in Access Networks. After the successful workshops in Moscow (2010), Budapest (2011) and St. Petersburg (2012), next year’s workshop will be held in Almaty, Kazakhstan, from 11 until 12 September 2013. Workshop is co-locating with ICUMT 2013 (www.icumt.org), which is an important event in the world of Russian scientists in the field of telecommunications and control. And this years ICUMT will be organized by Kazakhtelecom in co-operation with Tampere University of Technology, Finland.