Stackable optical ferrule and connector using same

A mold operable to injection mold a unitary, optical ferrule, the mold comprising:

• a first part configured to form:
• a contact surface of a stacking member of the unitary, optical ferrule;
• one or more elements of the unitary, optical ferrule configured to receive and secure an optical waveguide;
• and
• one or more elements of the unitary, optical ferrule configured to redirect input light within the unitary optical ferrule;
• and
• a second part configured to form:
• at least one output window of the unitary, optical ferrule configured to transmit the redirected light out of a mating surface of the unitary, optical ferrule;
• and
• an extension of the stacking member comprising a distal end extending beyond the mating surface, the distal end configured to interface with a corresponding contact surface of a corresponding optical ferrule;
• wherein respective first and second surfaces of the first and second parts form one or more parting line artifacts, the one or more parting line artifacts including a parting line artifact extending substantially around an external perimeter of the unitary optical ferrule.