Optical transmission system, optical device, and optical processing method
When a terminal point of an optical signal propagating through a submarine cable is extended in an optical transmission system, development man-hours and costs are increased. Thus, the optical transmission system according to the present invention includes: a first optical device configured to be connected to a plurality of first fibers and a second fiber associated with each of the plurality of first fibers; and a second optical device configured to be connected to the second fiber, the first optical device and the second optical device each include an optical function block, and the optical function block is configured to achieve an optical function defined for each of the plurality of first fibers.
1 . An optical transmission system comprising:
a first optical device configured to be connected to a plurality of first fibers and a second fiber associated with each of the plurality of first fibers; and
a second optical device configured to be connected to the second fiber, wherein
the first optical device and the second optical device each include an optical function block, and
the optical function block is configured to achieve an optical function defined for each of the plurality of first fibers,
the optical function block in the second optical device achieves the optical function for each of the plurality of first fibers through connection with the second fiber associated with each of the plurality of first fibers,
the optical function block includes an optical interface block including an optical interface,
the first optical device includes a first optical interface block being the optical interface block for each of the plurality of first fibers, and
the second optical device includes a second optical interface block being the optical interface block that is associated with the second fiber,
the optical function block includes:
a dummy light generation block including a dummy light generator to generate dummy light;
a submarine device control block including a controller for a submarine device connected to the plurality of first fibers;
an optical demultiplexing block including a demultiplexer for an optical signal; and
an optical amplification block including an optical amplifier, and
at least one of the first optical device and the second optical device further includes at least one of the dummy light generation block, the submarine device control block, the optical demultiplexing block, and the optical amplification block, and
the dummy light generation block includes:
the dummy light generator;
an optical splitter configured to split the dummy light and output a plurality of parts of split dummy light;
a first output connector configured to simultaneously output the plurality of parts of split dummy light; and
a second output connector configured to output the dummy light.
2 . The optical transmission system according to claim 1 , wherein
the first optical device includes a first dummy light generation block being the dummy light generation block, and
the first dummy light generation block is connected to each of the first optical interface blocks via the first output connector.
3 . The optical transmission system according to claim 1 , wherein
the first optical device includes a first dummy light generation block being the dummy light generation block, and
the first dummy light generation block is connected to the first optical interface block via the second output connector.
4 . The optical transmission system according to claim 1 , wherein
the second optical device includes a second dummy light generation block being the dummy light generation block, and
the second dummy light generation block is connected to the second optical interface block via the second output connector.
5 . The optical transmission system according to claim 1 , wherein
the optical interface block further includes an optical amplifier and an optical monitor.
6 . The optical transmission system according to claim 1 , wherein
the first optical device includes:
a first connector configured to be connected to the plurality of first fibers to be connected to a submarine optical device; and
a second connector configured to be connected to the second fiber laid on land.
7 . The optical transmission system according to claim 1 , wherein
the second optical device includes:
a third connector configured to be connected to the second fiber laid on land; and
a fourth connector configured to be connected to a third fiber to be connected to an optical transponder.
8 . An optical device comprising:
a first connector configured to be connected to a plurality of first fibers;
a second connector configured to be connected to a second fiber associated with each of the plurality of first fibers; and
an optical function block configured to achieve an optical function defined for each of the plurality of first fibers, wherein
the optical function block includes an optical interface block including an optical interface for each of the plurality of first fibers,
the optical function block further includes at least one of:
a dummy light generation block including a dummy light generator to generate dummy light;
a submarine device control block including a controller for a submarine device to be connected to the plurality of first fibers;
an optical demultiplexing block including a demultiplexer for an optical signal; and
an optical amplification block including an optical amplifier, and the dummy light generation block includes:
the dummy light generator;
an optical splitter configured to split the dummy light and output a plurality of parts of split dummy light;
a first output connector configured to simultaneously output the plurality of parts of split dummy light; and
a second output connector configured to output the dummy light.
9 . The optical device according to claim 8 , wherein the optical function block includes the dummy light generation block, and
the dummy light generation block is connected to each of the optical interface blocks via the first output connector.
10 . The optical device according to claim 8 , wherein
the optical function block includes the dummy light generation block, and
the dummy light generation block is connected to the optical interface block via the second output connector.
11 . The optical device according to claim 8 , wherein
the optical interface block further includes an optical amplifier and an optical monitor.
12 . The optical device according to claim 8 , wherein
the first connector is configured to be connected to the plurality of first fibers to be connected to a submarine optical device, and
the second connector is configured to be connected to the second fiber laid on land.
13 . An optical processing method comprising:
subjecting first light to first optical processing, the first light propagating through a plurality of first fibers; and
subjecting second light to second optical processing, the second light propagating through a second fiber associated with each of the plurality of first fibers, wherein
the first optical processing and the second optical processing are processes of achieving an optical function defined for each of the plurality of first fibers,
the first optical processing and the second optical processing achieve the optical function by combining any of processing of introducing dummy light as at least one of the first light and the second light, processing of controlling a submarine device to be connected to the plurality of first fibers, processing of demultiplexing at least one of the first light and the second light, and processing of amplifying at least one of the first light and the second light, and
the first optical processing includes processing of introducing the dummy light being the first light, and the processing of introducing the dummy light includes processing of generating the dummy light, processing of splitting the dummy light and generating a plurality of parts of split dummy light, and processing of simultaneously introducing the plurality of parts of split dummy light to each of the plurality of first fibers.