Provided are an optical connector and an optical tomograph, in which no noise occurs and a high quality image without a distortion can be obtained. To form the optical connector, optical fibers are inserted in a cavity of a tube from opposite ends thereof one of the optical fibers is secured to the tube and the other optical fiber is held so as to be movable relative to the tube an end of one of the optical fibers is spaced from an end of the other optical fiber to define a gap therebetween in the cavity a connecting portion which connects the external space of the tube and the gap is formed and a liquid or fluid made of a material which permits light to pass therethrough is received in the external space, the gap, and the connecting portion. Consequently, a significant pressure variation in the matching liquid does not occur if the distance between the opposed optical fibers changes.
