Patent ID: 9608734
Date: 2017-03-28
CPC Classifications: G02B,H04B,H04J

Claim:
1. An optical transmission system, comprising: a reception apparatus configured to receive signal light separated from wavelength division multiplexing light; and a management apparatus configured to manage a plurality of optical transmission apparatuses that transmit the wavelength division multiplexing light, wherein the reception apparatus further comprises: an amplification section configured to amplify each power of electric signals for demodulating the signal light within a predetermined tolerance level, the electric signals being converted from mixed light of local light and the signal light input into the reception apparatus, an adjustment section configured to adjust at least one of power of the signal light input into the reception apparatus and power of the local light, and a controller configured to control the adjustment section based on an adjustment amount notified by the management apparatus, the management apparatus includes a computer, and the computer is configured to perform: an estimation process to estimate, when a number of channels of the wavelength division multiplexing light is to be changed, an extreme value of the power of the signal light that fluctuates due to the change based on management information for each of the optical transmission apparatuses; a calculation process to calculate the adjustment amount, when the extreme value of the power of the signal light is not within a tolerance level of the power of the signal light in accordance with the tolerance level of the amplification section, based on the extreme value of the power of the signal light, and an upper limit value or a lower limit value in the tolerance level of the power of the signal light; and a notification process to notify the reception apparatus of the adjustment amount calculated by the calculation process.