Detection of connection of optical fibers

Abstract

Abstract PURPOSE:To facilitate detection of the connected condition of optical fibers by arranging a film for blocking transmission of a light at the opposite end face of a transparent tube, into which the optical fibers are to be inserted, so that the detection light from the outside may be guided into the fibers. CONSTITUTION:The light coming from its source 7 arranged outside especially for detection goes into a glass tube 3 and is reflected on its inclined wall 5 so that it advances toward the connected portion of optical fibers 1 and 2. Since, in this instance, reflecting films 8 and 9 are mounted in the opposite end faces of glass tubes 3 and 4, all the light to go into the tube 4 from the tube 3 is the light to pass through the overlapped portions of the end faces of the fibers 1 and 2 so that it is reflected to the outside from the wall 5. The quantity of the light is detected by a light receiving element 6 to know the connected condition, and the fibers 1 and 2 can be efficiently connected by adjusting the tubes 3 and 4 in a manner to maximize the light quantity. With the use of such simple construction, it is possible to easily detect the condition of the connected portions of the long optical fibers.

Inventors

• 👤 Teruhito Matsui

Bibliographic Details