Patent ID: 6997620

Claim:
An optical plug for being mounted to an optical fiber cable including a fiber, a core wire which covers the fiber, high tensile strength wires which cover the core wire and an outer sheath which covers the high tensile strength wires, the optical plug comprising: a tubular ferule which holds the fiber and the core wire of the optical fiber cable such that the fiber of the optical fiber cable is exposed from a distal end of the ferule; a tubular adapter housing in which the distal end of the ferule is inserted; a tubular plug body which includes a projecting portion which is inserted into the inside of the adapter housing and an extending portion in which a plurality of annular grooves are formed and which is covered with the high tensile strength wires of the optical fiber cable; a compression coil spring which is formed in the inside of the projecting portion of the plug body and biases the ferule toward the adapter housing; a tubular compression bonding sleeve which includes a crimp portion which covers the extending portion of the plug body from above the high tensile strength wires of the optical fiber cable and a support portion provided at a proximal end side of the crimp portion; wherein the diameter of the crimp portion is uniformly narrowed, and the high tensile strength wires of the optical fiber cable are compression-bonded to the annular grooves of the extending portion of the plug body.