Verfahren und System zur Detektion einer Störung in einer optischen Zweiwegübertragung mit einer Einzelfaser

摘要

A method for detecting trouble occurring in a single-fiber two-way optical transmission system containing first and second optical terminal stations connected to each other through at least one two-way single optical fiber. In the method, (a) first abnormality in a first optical signal received at the first optical terminal station is detected; (b) a notice that the first optical terminal station will stop transmission of second optical signals, is transmitted from the first optical terminal station to the second optical terminal station when the first abnormality is detected; (c) the transmission of the second optical signals is stopped after the transmission of the notice; and (d) second abnormality in a third optical signal received at the first optical terminal station is detected after the stopping of the transmission of the second optical signals.