CAPILLARY FOR OPTICAL FIBER, FERRULE FOR OPTICAL CONNECTOR, AND CAPILLARY WITH OPTICAL FIBER

摘要

PROBLEM TO BE SOLVED: To provide a capillary for an optical fiber with which a low connection loss can be obtained easier than before without performing any troublesome aligning operations, a ferrule for an optical connector which uses the capillary, and a capillary with an optical fiber. SOLUTION: The capillary 20 for optical fiber is characterized in that the Ra value of the surface roughness of an internal hole 20a into which an optical fiber can be inserted is 0.1 to 0.5μm. The ferrule 21 for the optical connector has a chamfered part 21d which guides the insertion into a sleeve at one end of the capillary for the optical fiber and a flare part 21e which has an opening at the other end and guides the optical fiber into the internal hole 21a. Further, the capillary 22 with the optical fiber has the optical fiber 23 inserted into the internal hole 22a.