| 摘要 |
<p>An optical transmission device and an optical repeating device based on an optical amplification repeating technique using a remote excitation. The optical repeating device (30) comprises a first optical transmission means (31), a first folded transmission means (32), a second optical transmission means (33), a second folded transmission means (34), and four optical couplers (50), wherein a transmission light and a reception light are sent over one optical fiber cable to reduce optical fiber laying and maintenance costs, a broken optical fiber is detected by a monitoring function using an excitation light and a residual excitation light to improve reliability and safety of the system, and an optical output level regulation at a relay station can be optimally set according to an actual transmission distance.</p> |
