Optical connector and fiber distribution unit

A fiber distribution unit, comprising:

• a tray movably mountable to a fiber distribution cabinet, wherein the tray further includes a face configured to receive a plurality of couplings, wherein each of the couplings is configured to receive an optical connector for terminating an optical fiber from a distribution line, wherein the connector comprises a housing configured to mate with a receptacle and a collar body disposed in the housing, wherein the collar body includes a fiber stub disposed in a first portion of the collar body, the fiber stub including a first optical fiber mounted in a ferrule and having a first end proximate to an end face of the ferrule and a second end, wherein the collar body includes a mechanical splice disposed in a second portion of the collar body, the mechanical splice configured to splice the second end of the fiber stub to an optical fiber from a distribution line, wherein the collar body also includes a buffer clamp configured within a third portion of the collar body, the buffer clamp configured to clamp at least a portion of a buffer cladding of the second fiber upon actuation.