WDM-PON Preventive Optical Monitoring System with Colourless Reflectors

A new optical monitoring system for remote measurement of fibre attenuation in WDMPONs is reported. It uses colourless reflectors at ONU side, avoiding inventory complexity. Its performance is demonstrated with negligible penalty on 12.5Gb/s transmission.The research leading to these results has received funding from the Spanish Ministry of Economía y Competitividad under projects TEC2012-37983-C03-02 (CFOOT-TIC) and TEC2009-14718-C03-03, from the Comunidad de Madrid project under grant S2013/MIT-2790 (SINFOTON-CM) and support from the European Union under grant no. 318137 (DISCUS).European Community's Seventh Framework Progra