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AssigneeMitsubishi Denki Kabushiki Kaisha
InventorsSatoshi Kumayasu, Eiichi Nakagawa
Estimating the term…
A plurality of submarine cable transmission paths extending from a plurality of land-based terminal stations are connected with each other in a submarine branching apparatus, and an electric power feeding line is arranged between each land-based terminal station and an electric power feeding line switching unit of the submarine branching apparatus to supply electric power from the electric power feeding line to a communication signal of the corresponding submarine cable transmission path through repeaters. The electric power feeding lines are connected with each other in the electric power feeding line switching unit. A control signal superposed on the communication signal is sent to the electric power feeding line switching unit through one submarine cable transmission path, and the connection of the electric power feeding lines is switched according to the control signal. Because the switching is performed when the electric power feeding lines are electrically set to a stable state, no electric arc is generated in the switching. Also, each submarine cable transmission path is formed of an optical fiber, so that the electric power is supplied from one electric power feeding line to the control signal of the submarine cable transmission path. Therefore, the control signal is not attenuated, and the connection of the electric power feeding lines can be reliably switched.
An electric power feeding line switching method, in which electric power is supplied from each of a plurality of electric power feeding lines to one of a plurality of repeaters with which a plurality of optical fiber transmission paths having a branching point arc connected to supply the electric power to an optical communication signal transmitting through the optical fiber transmission paths, comprising the steps of:
An electric power feeding line switching apparatus, in which a connection of a plurality of electric power feeding lines, each of which is connected with an optical fiber transmission path through a repeater to supply electric power from the electric power feeding lines to an optical communication signal of the optical fiber transmission paths through the repeaters, is switched, comprising:
An electric power feeding line switching system, in which a connection of a plurality of electric power feeding lines, each of which is connected with an optical fiber transmission path through a repeater to supply electric power from the electric power feeding lines to an optical communication signal of the optical fiber transmission paths through the repeaters, is switched, comprising:
Dependencies are inferred from the claim text.