JP2003215383A - V groove stage for splicing tape-like secondary coated optical fibers - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a V groove stage which can collectively splice a plurality of tape-like secondary coated optical fibers. <P>SOLUTION: A plurality of sets of V grooves 12, each of which has a plurality of V grooves 12 for positioning a plurality of optical fibers 21 of one tape- like secondary coated optical fiber 20, are formed on a substrate 11. V grooves 12 in each set 13 are formed with the same pitch as an arrangement pitch a of optical fibers 21 of the tape-like secondary coated optical fiber. A center interval b between the innermost V grooves 12 of adjacent sets 13 of V grooves is set twice as long as ((the thickness of a coating 22 of the side face of the tape-like coated optical fiber)+(the radius of optical fibers)). Tops 14 between innermost V grooves of adjacent sets of V grooves are made higher than tops 15 between V groves 12 in each set. Thus all the optical fibers 21 of a plurality of tape-like secondary coated optical fibers 20 can be naturally dropped to V grooves 12 and can be easily collectively spliced. <P>COPYRIGHT: (C)2003,JPO

Description

Description: BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to a V-groove stage used to connect a plurality of tape-shaped optical fibers at a time. 2. Description of the Related Art A conventional V-groove stage for connecting an optical fiber ribbon has a plurality of V-grooves formed on a substrate at the same pitch as the arrangement pitch of the optical fibers of the optical fiber ribbon. It has a formed structure. [0003] In an inspection process of a tape-shaped optical fiber core, a tape-shaped optical fiber core to be inspected is connected to the inspection device side using the above-described V-groove stage. The connection with the tape-shaped optical fiber is repeatedly performed. In such a case, if a plurality of tape-shaped optical fiber cores can be connected at a time on the V-groove stage, it becomes possible to inspect a plurality of tape-shaped optical fiber cores at one time, Efficiency is improved. The same can be said for the connection of the optical fiber ribbon other than the inspection. However, since the conventional V-groove stage has a structure in which a plurality of V-grooves are formed at a constant pitch, for example, if two tape-shaped optical fiber cores are arranged side by side to perform collective connection with a counterpart. Then, the interval between the innermost optical fibers of the adjacent tape-shaped optical fiber cores is wider than the interval between the optical fibers in each tape-shaped optical fiber core, so that they can be easily dropped into V-grooves at a constant pitch. Is difficult. For this reason, it has been difficult for the conventional V-groove stage to connect a plurality of tape-shaped optical fibers at a time. [0005] Accordingly, an object of the present invention is to provide a V-connector capable of connecting a plurality of tape-shaped optical fibers at a time.
It is to provide a groove stage. A tape-shaped optical fiber core wire connecting V-groove stage according to the present invention positions a plurality of optical fibers of one tape-shaped optical fiber core member on a substrate. Plural V-grooves are formed as one set, and a plurality of sets of V-grooves are formed, and the V-grooves in each set are formed at the same pitch as the arrangement pitch a of the optical fibers of the tape-shaped optical fiber core. The center interval b of the V-grooves located on the innermost side of the set of grooves is set to twice (the coating thickness of the side surface of the tape-shaped optical fiber core + the radius of the optical fiber), and The peaks between the V-grooves located on the innermost side are formed higher than the peaks between the V-grooves in each set. Hereinafter, embodiments of the present invention will be described.
This will be described in detail with reference to the drawings. FIG. 1 and FIG. 2 show an embodiment of the present invention. This V-groove stage 10 is for connecting two 4-core optical fiber core wires 20 at a time, and is exposed on the substrate 11 at the end of one tape-type optical fiber core wire 20. The four V-grooves 12 for positioning the four optical fibers (bare optical fibers) 21 are one set, and two sets 13 of four V-grooves 12 are formed. The V-grooves 12 in each set 13 are formed at the same pitch as the arrangement pitch a of the optical fibers 21 of the tape-shaped optical fiber 20 as in the conventional case. On the other hand, the center interval b between the innermost V-grooves 12 of the set 13 of adjacent V-grooves is
(The thickness of the coating 22 on the side surface of the tape-shaped optical fiber core cable 20 + the radius of the optical fiber 21). Further, the peaks 14 between the innermost V-grooves 12 of the sets 13 of adjacent V-grooves are formed higher than the peaks 15 between the V-grooves 12 in each set 13. The material of the substrate 11 is generally zirconia, but may be ceramic, cemented carbide, brass, or the like. If such a V-groove stage 10 is used, it is possible to easily drop all the optical fibers 21 into the V-groove 12 with the two tape-shaped optical fiber cores 20 arranged side by side and adjacent to each other. Yes, two tape-shaped optical fiber cores
20 can be easily connected together. In the above-described embodiment, a case has been described in which two four-core tape-shaped optical fiber cores are collectively connected. However, two two-core tape-shaped optical fiber cores are collectively connected in the same V-groove stage. It is also possible to connect. Further, when three or more tape-shaped optical fibers are connected collectively, three or more sets of V-grooves may be formed on the substrate in the same manner as in the above embodiment. Since the tape-shaped optical fiber V-groove stage according to the present invention has the above-described configuration, a plurality of tape-shaped optical fiber cores are arranged side by side and adjacent to each other. Thus, all the optical fibers can be easily dropped into the V-groove, and a plurality of tape-shaped optical fiber core wires can be easily connected together.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view showing a V-groove stage according to an embodiment of the present invention in relation to a tape-shaped optical fiber core. FIG. 2 is a perspective view of a V-groove stage of FIG. 10: V-groove stage 11: substrate 12: V-groove 13: set of V-grooves 14: peak between V-grooves 12 located on the innermost side of adjacent set 13: peak between V-grooves 12 in set 13 20: Tape-shaped optical fiber core wire 21: Optical fiber 22: Coating

Claims (1)

Claims: 1. A plurality of V-grooves are formed on a substrate, with a plurality of V-grooves for positioning a plurality of optical fibers of one tape-shaped optical fiber core as one set. The V-grooves in each set are formed at the same pitch as the arrangement pitch a of the optical fibers of the tape-shaped optical fiber, and the center distance b between the innermost V-grooves of the set of adjacent V-grooves is ( (The coating thickness on the side surface of the tape-shaped optical fiber core + the radius of the optical fiber), and the peak between the innermost V-grooves in the set of adjacent V-grooves is V in each set. A V-groove stage for connecting a tape-shaped optical fiber core, wherein the V-groove stage is formed higher than a peak between grooves.