An optical switch is provided with an optical-fiber-arraying-member 1
in
which a plurality of optical fiber fixing grooves 1a extending along
radial directions of a virtual circle are radially formed in a predetermined surface
of a base material, a plurality of array-side optical fibers 2 arrayed in
the plurality of optical fiber fixing grooves 1a of the optical-fiber-arraying-member
1, and a moving-side optical fiber 4 to be selectively optically
connected to either of the plurality of array-side optical fibers 2; the
moving-side optical fiber 4 and the optical-fiber-arraying-member 1
are rotated relative to each other about a center axis 1o of the
virtual circle, and the moving-side optical fiber 4 is selectively optically
connected to the array-side optical fiber 2 selected.