Optical fiber connector with reference hole

An optical fiber connector comprising:

• a mating portion defining a coupled direction and comprising pairs of lenses and a pair of guiding portions;
• the pair of guiding portions each defining a guiding hole through a front face thereof in the coupled direction;
• the guiding hole comprising an inner bottom face perpendicular to the coupled direction and inner side faces perpendicular to the inner bottom face;
• wherein the inner side faces are provided with at least three planes under a condition an imaginary circle perpendicular to the coupled direction is defined inscribed with said three planes.

An optical fiber connector assembly comprising:

• a first part and a second part mated with each other in an axial direction;
• the first part defining a pair of guiding posts spaced from each other in a transverse direction perpendicular to said axial direction, each of said guiding posts essentially having a circular cross-section configuration thereof;
• a plurality of first optical components associated with the first part;
• the second part defining a pair of guiding holes spaced from each other in said transverse direction, each of said guiding holes adapted to receive the corresponding guiding post, said guiding hole defining a cross-section contour composed essentially by a plurality of linear segments;
• and
• a plurality of second optical components associated with the second part for coupling to the corresponding first optical components, respectively, wherein each of guiding holes, at least adjacent two of said linear segments being angularly symmetric with each other by two sides of an imaginary horizontal center line which extends in the transverse direction and is defined by a center level of each of said guiding holes in a vertical direction perpendicular to both said transverse direction and said axial direction so as to have centers of said pair of guiding posts essentially comply with said horizontal center line, when mated in the axial direction.