Optical connecting structure for connecting multi-core fibers

An optical connecting structure for connecting multi-core fibers, comprising:

• a plurality of first multi-core fibers of which each optical fiber includes a plurality of cores;
• a plurality of second multi-core fibers of which each optical fiber includes a plurality of cores;
• a first optical system which allows at least a part of light beams emitted from the cores of each first multi-core fiber to have different propagation directions;
• and
• a second optical system which allows each light beam emitted from each first multi-core fiber and propagated through the first optical system to be condensed on the plurality of second multi-core fibers,
• wherein a first fiber array where the first multi-core fibers are arrayed corresponds to a first core array where the cores in the respective optical fibers of the first multi-core fibers are arrayed, in a first surface intersecting an optical axis of the first optical system, and
• wherein a second fiber array where the second multi-core fibers are arrayed corresponds to a second core array where the cores in the respective optical fibers of the second multi-core fibers are arrayed, in a second surface intersecting an optical axis of the second optical system,
• wherein the first fiber array is similar to the first core array, and the second fiber array is similar to the second core array, and
• wherein the first fiber array, the first core array, the second fiber array and the second core array are one-dimensional arrays.

An optical connecting structure for connecting multi-core fibers, comprising:

• a plurality of first multi-core fibers of which each optical fiber includes a plurality of cores;
• a plurality of second multi-core fibers of which each optical fiber includes a plurality of cores;
• a first optical system which allows at least a part of light beams emitted from the cores of each first multi-core fiber to have different propagation directions;
• and
• a second optical system which allows each light beam emitted from each first multi-core fiber and propagated through the first optical system to be condensed on the plurality of second multi-core fibers,
• wherein a first fiber array where the first multi-core fibers are arrayed corresponds to a first core array where the cores in the respective optical fibers of the first multi-core fibers are arrayed, in a first surface intersecting an optical axis of the first optical system, and
• wherein a second fiber array where the second multi-core fibers are arrayed corresponds to a second core array where the cores in the respective optical fibers of the second multi-core fibers are arrayed, in a second surface intersecting an optical axis of the second optical system, and
• wherein the first multi-core fibers include at least three multi-core fibers and the second multi-core fibers include at least three multi-core fibers.