Optical fiber array and production method thereof

Abstract

An optical fiber array has an upper substrate, a lower substrate where a V-groove is formed, and optical fibers inserted and arranged on the V-groove, the upper substrate and the lower substrate being fixed with an adhesive, and the optical fibers being fixed and aligned on the V-groove. In the optical fiber array, the upper substrate has a fiber presser substrate for pressing the optical fibers on the V-groove and a coated fiber housing substrate for housing coated optical fibers, and a housing groove for coated-optical fibers and an adhesive inflow groove portion in the direction of a fiber axis are formed in the coated fiber housing substrate. An optical fiber array is a half-pitched optical fiber array having two levels of coated optical fibers. The adhesive is composed of a first adhesive for bonding the fiber presser substrate and the lower substrate and a second adhesive for bonding the coated optical fiber between the coated fiber housing substrate and the lower substrate, and the first adhesive has a Young's modulus larger than the second adhesive.