PURPOSE: To adhere optical fibers with a high reliability by using optical fibers where metallic coatings are provided on outside peripheral parts and splicing optical fibers mutually or the optical fiber and an apparatus or an element.
CONSTITUTION: In case of mutual splicing of optical fibers by soldering, a proper jig is used to put a solder 6 on butted end parts where sheaths are removed to expose metallic coatings. It is preferable that a copper V groove metallic fitting having a V groove 9 is used as the jig 6. The V groove 9 functions to fix fibers, prevent the break and cracks in the fiber junction part, and improve centering. Butted end parts of optical fibers and the jig are soldered integrally into one body to connect optical fibers.
YAMAGISHI YOSHIO
OKUBO SHUICHI
ADAMANDO KOGYO KK
NIPPON MINING CO