Proactive Fiber Damage Detection in Real-time Coherent Receiver - Fabien Boitier; Vincent Lemaire; Jelena Pesic; Lucia Chavarría; Patricia Layec; Sébastien Bigo; Eric Dutisseuil (European Conference on Optical Communication, ECOC 2017, Gothenburg, Sweden, September 17-21, 2017, 2017)