Husamettin Dogan was one of the 51 people convicted in the rape trial of French woman Gisele Pelicot.
Pelicot was the survivor of a mass rape planned and executed by her then-husband Dominique Pelicot at their home in the South France.
Pelicot, 72, has emerged as a global feminist figure after waiving her right to anonymity under French law and testifying against her alleged abusers in court.