Patent ID: 7195400

Claim:
An optical connector comprising: an optical connector ferrule having: a first end having a surface to be butt-connected to a corresponding first end surface of another optical connector ferrule; an optical fiber containing passage having an entrance hole at the other end of the optical connector ferrule to accept and contain the covered end of an optical fiber, the optical fiber-containing passage extending through the optical connector ferrule in communication with one end of a fine pore in the optical connector ferrule of a lesser diameter than the fiber-containing passage, the other end of the fine pore extending to the surface of the first end of the optical connector ferrule, the fine pore accepting an uncovered part of the optical fiber, the optical fiber having stress distribution differentiated in two orthogonal directions on a cross section of the optical fiber; wherein the length of the fine pore is not longer than one third of the entire length from the first end surface of the optical connector ferrule to the other end of the optical connector ferrule; and wherein the optical fiber-containing passage and fine pore form a positioning device on the ferrule to align the optical fiber inserted into the optical connector ferrule.