EXCITATION LIGHT SOURCE DEVICE AND OPTICAL TRANSMISSION SYSTEM

摘要

An excitation light source device includes: an excitation light source to generate the Raman excitation light; a light source controller to control an intensity of the Raman excitation light; an amplified spontaneous emission noise measurer to measure an intensity of amplified spontaneous emission noise caused by the Raman excitation light; and a transmission line abnormality analyzer to detect abnormality in the transmission line on a basis of a control state of the light source controller and a measurement result of the amplified spontaneous emission noise measurer. In a state where the abnormality is not detected, the light source controller controls the intensity of the Raman excitation light to gradually increase to a set value. In a state where the abnormality is detected, the light source controller controls the excitation light source to stop or reduce generation of the Raman excitation light.

主权项

1. An excitation light source device that outputs Raman excitation light amplifying signal light to a transmission line on which the signal light is transmitted, the excitation light source device comprising:
an excitation light source to generate the Raman excitation light; a light source controller to control an intensity of the Raman excitation light generated by the excitation light source; an amplified spontaneous emission noise measurer to measure an intensity of amplified spontaneous emission noise which is caused by the Raman excitation light generated by the excitation light source; and a transmission line abnormality analyzer to detect abnormality in the transmission line on a basis of a control state of the light source controller and a measurement result of the amplified spontaneous emission noise measurer, wherein, in a state where the abnormality is not detected by the transmission line abnormality analyzer, the light source controller controls the intensity of the Raman excitation light generated by the excitation light source to gradually increase to a set value, and wherein, in a state where the abnormality is detected by the transmission line abnormality analyzer, the light source controller controls the excitation light source to stop or reduce generation of the Raman excitation light.