An optical fiber array having a plurality of optical-fiber bare fibers disposed
in alignment between two opposing plate members, which is characterized in that
optical-fiber bare fibers 5 are disposed in contact with a flat surface
of a plate member A, an adjustment layer 7 is interposed between another
plate member B and the plate member A, where the back of the plate member B is
made to serves as a disposition standard surface 3, and the adjustment layer,
which fulfills conditions of (dmax+r)H where the desired preset distance
from i) a central line of the optical-fiber bare fibers which is formed by connecting
central points of end cross sections in the optical-fiber bare fibers disposed
in alignment to ii) the disposition standard surface is represented by H, the maximum
value of the thickness dimension in the plate member B by dmax, and the radius
of the optical-fiber bare fibers by r, compensates a deviation from the preset
distance H that is caused by a non-uniformity in thickness dimension in the plate
member B, whereby the distance from the central points of the optical-fiber bare
fibers to the disposition standard surface is set identical or substantially identical
to the preset distance H.
