Optical Fiber Connector

An optical fiber connector attached to a distal end side of an optical fiber that includes a fiber wire and a jacket surrounding the fiber wire and that has on the distal end side a cladding part where the fiber wire is exposed, the optical fiber connector comprising,

• a housing detachably coupled to an adaptor,
• a rigid ferrule accommodated in the housing in a movable manner along an axis line direction with having a distal end extended outwards from the housing, the ferrule having a proximal end side with a first axial hole that has a first inner diameter larger than an outer diameter of the jacket and a distal end side with a second axial hole that is communicated to a distal end of the first axial hole and that has a second inner diameter smaller than the first inner diameter and larger than an outer diameter of the fiber wire,
• a bias member that biases the ferrule toward the distal end side of the optical fiber within the housing, and
• a flexible tube inserted around the proximal end side of the ferrule so that at least a part thereof is extended toward the proximal end side than the ferrule to form a proximal-end-side extended part, wherein
• the proximal-end-side extended part of the flexible tube has an inner diameter that is larger than the outer diameter of the jacket and that is smaller than the first inner diameter.