Patent ID: 8348520

Claim:
An optical connector structure comprising: an optical fiber having a laser beam entrance end to which a quartz chip is integrally connected; a ferrule into which a portion of the optical fiber including the quartz chip is inserted and which holds the portion of the optical fiber; and a receptacle surrounding the ferrule, and including a large-diameter hole formed toward an opening and a small-diameter hole formed toward a back of the receptacle so as to be connected to the large-diameter hole, where a shoulder is formed between the large-diameter hole and the small-diameter hole, wherein a front end portion of the ferrule is inserted into the small-diameter hole located toward the back of the receptacle, and a back body portion of the ferrule is inserted into the large-diameter hole of the receptacle, and wherein the ferrule includes an engagement member engaging the receptacle such that only the front end portion is inserted into the small-diameter hole of the receptacle, the engagement member being movable along a length of the ferrule in order to enable adjustment of an extent to which the front end portion of the ferrule is inserted into the small-diameter hole of the receptacle.