Patent ID: 6856767
Filing Date: 2005-02-15
Classification: H04B,H04J,H04Q

Abstract:
1. A method for the selection of optical signal quality for the transmission of data, comprising the steps of: (a) receiving an incoming optical signal; (b) splitting the incoming optical signal into a first split signal and a second split signal; (c) evaluating the quality of the first split signal in a first optical performance monitor; (d) generating and transmitting from the first optical performance monitor to a signal selector engine a first electrical message indicative of the quality of the first split signal; (e) evaluating the quality of the second split signal in a second optical performance monitor; (f) generating and transmitting from the second optical performance monitor to the signal selector engine a second electrical message indicative of the quality of the second split signal; (g) dropping from transmission one of the first or the second split signal that was evaluated to be of lesser quality than the other of the split signals; (h) generating and transmitting from the signal selector to an alarm indicator signal generator an electrical message indicative that both signals are unacceptable; (i) generating and transmitting from the alarm indicator signal generator to the signal selector an optical message if both signals are of unacceptable quality; and (j) continuing with the transmission of the other of the first or the second split signals that was indicated to be of higher quality than the other of the split signals.