A method is disclosed for monitoring and controlling the bit error rate (BER) in an optical communication network where an optical receiver in the optical transmission network. The method includes the steps of decombining a combined channel signal received from the network and then monitoring a real...http://www.google.de/patents/US7551815?utm_source=gb-gplus-sharePatent US7551815 - Method of monitoring and controlling the bit error rate (BER) in an optical communication network
