| 摘要 |
<p>PROBLEM TO BE SOLVED: To monitor whether upstream burst signal light transmitted by an ONU is set as wavelength allocation by referring to a logical connection relation representing which optical transceiver receives the upstream burst signal light transmitted by the ONU with an output light wavelength as allocated, and determining whether the upstream burst signal light is received by an optical transceiver that is matched in the logical connection relation.SOLUTION: According to a wavelength monitoring method, a transmission source identification step and a determination step are implemented in order. In the transmission source identification step, an optical transceiver for which signal light transmitted by a slave node is selected in accordance with a wavelength of the signal light is identified and the slave node of a transmission source is identified from a frame included in the signal light beforehand. In the determination step, a logical connection table is referenced that indicates a correspondence between the slave node and the optical transceiver that receives the signal light transmitted by the slave node, and it is determined on the basis of a reference result whether the signal light outputted by the slave node identified in the transmission source identification step is received by the optical transceiver that is matched in the correspondence.</p> |
