BRANCHING DEVICE, OPTICAL SUBMARINE CABLE SYSTEM, AND POWER SUPPLY METHOD

A branching device to be used for branching a power supply path connecting a first trunk station and a second trunk station to a branch station, the branching device including: a first power reception port being connected with a first power supply path connected to the first trunk station; a second power reception port being connected with a second power supply path connected to the second trunk station; a third power reception port being connected with a third power supply path connected to the branch station; and a power supply unit configured to supply, via the third power reception port, power to the third power supply path by power supply from at least either of the first power supply path and the second power supply path.