JP2568690Y2 - Reinforcement substrate for optical fiber fusion splicing part - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reinforcing substrate for an optical fiber fusion splicing portion used for reinforcing an optical fiber fusion splicing portion.

[0002]

2. Description of the Related Art As shown in FIGS. 8 and 9, a conventional reinforcing substrate for an optical fiber fusion splicing portion is provided on one side of a tape-like hot melt film 11.
Rectangular glass ceramic plate 1 having the same width and length as
2 is attached.

In order to reinforce an optical fiber fusion spliced portion using this reinforcing substrate, as shown in FIGS. 10 and 11, the optical fiber 14 of the optical fiber 13 from which the coating has been stripped is used. The fiber fusion spliced portion 15 is sandwiched between a pair of glass ceramic plates 12 of a reinforcing substrate such that the hot melt film 11 is on the inside, and is heated by pressing both glass ceramic plates 12 while pressing. As shown in FIGS. 12 and 13, both hot melt films 11 are melted to form an adhesive layer 16, and the optical fiber fusion spliced portion 15 is reinforced by two reinforcing glass ceramic plates 12.

[0004]

In this conventional reinforcing substrate for an optical fiber fusion splicing portion, an optical fiber whose optical fiber fusion splicing portion is reinforced by using the reinforcing substrate is accommodated in an extra length storage body. In this case, as shown in FIG. 14, generally, the length L of the reinforcing substrate is set in consideration of the reliability of the optical fiber.
The sum of the length (60 mm) and the length twice as long as the maximum bending radius R (about 30 mm) of the fiber is the minimum length of one side of the accommodation space, and there is a disadvantage that a large space is required.

Accordingly, an object of the present invention is to provide a reinforcing substrate for an optical fiber fusion splicing portion which can reduce the accommodation space for an optical fiber after reinforcing the optical fiber fusion splicing portion.

[0006]

The reinforcing substrate for an optical fiber fusion splicing part of the present invention comprises a plurality of rectangular glass ceramics having a tape-shaped hot melt film on one side and both ends having an arc-shaped convex curved surface. The plate is an arc of a glass ceramic plate
Arc-shaped convex curve of the glass ceramic plate next to the convex curved surface
It is stuck linearly in a state facing the surface .

[0007]

In the above means, the adjacent glass ceramic plates can move along the respective convex curved surfaces.

[0008]

Next, an embodiment of the present invention will be described with reference to the drawings.

1 and 2 are a perspective view and a sectional view, respectively, of a reinforcing substrate for an optical fiber fusion splicing part according to an embodiment of the present invention.

The reinforcing substrate for an optical fiber fusion splicing portion is formed by attaching the hot melt film 1 to one side (the upper surface in FIGS. 1 and 2) of a tape-like hot melt film 1 which melts when heated and becomes an adhesive. A plurality of rectangular glass-ceramic plates 3 having the same width and having arcuate convex curved surfaces 2 at both end surfaces are linearly attached.

In order to reinforce an optical fiber fusion spliced portion using the reinforcing substrate having the above structure, as shown in FIGS.
The optical fiber fusion spliced portion 6 of the optical fiber 5 of the optical fiber 4 from which the coating has been stripped is sandwiched between the glass ceramic plates 3 of the pair of reinforcing substrates so that the hot melt film 1 is on the inside. Then, by pressing and heating the glass ceramic plates 3 facing each other, as shown in FIGS. 5 and 6, both the hot melt films 1 are melted to become the adhesive layer 7 and the optical fiber fusion spliced portion 6 is formed. Are reinforced by a plurality of pairs of glass ceramic plates 3 opposed to each other.

When the optical fiber 4 whose optical fiber fusion spliced portion 6 is reinforced by using two reinforcing substrates is accommodated in an extra length storage body (not shown), as shown in FIG. Since the adjacent glass ceramic plates 3 can move along the respective convex curved surfaces 3, the reinforcing portion of the optical fiber 4 can be formed with a curvature of about the minimum bending diameter of the fiber.

[0013]

As described above, according to the reinforcing substrate for an optical fiber fusion splicing part of the present invention, the adjacent glass ceramic plate can move along each convex curved surface. The reinforcing portion of the reinforced optical fiber can be formed with a curvature approximately equal to the minimum bending diameter of the fiber, and the space for accommodating the fiber can be made smaller than before.

[Brief description of the drawings]

FIG. 1 is a perspective view of a reinforcing substrate according to an embodiment of the present invention.

FIG. 2 is a sectional view of the reinforcing substrate according to the embodiment of the present invention;

FIG. 3 is a perspective view when the optical fiber is held between the reinforcing substrates according to the embodiment of the present invention;

FIG. 4 is a cross-sectional view when the optical fiber is held between the reinforcing substrates according to the embodiment of the present invention;

FIG. 5 is a perspective view of an optical fiber reinforced by using a reinforcing substrate according to an embodiment of the present invention;

FIG. 6 is a cross-sectional view of an optical fiber reinforced by using a reinforcing substrate according to an embodiment of the present invention.

FIG. 7 is a plan view showing a state in which the optical fiber reinforced by using the reinforcing substrate according to the embodiment of the present invention is formed so as to be accommodated in the extra length storage body.

FIG. 8 is a perspective view of a conventional reinforcing substrate.

FIG. 9 is a cross-sectional view of a conventional reinforcing substrate.

FIG. 10 is a perspective view when an optical fiber is held between conventional reinforcing substrates.

FIG. 11 is a cross-sectional view when an optical fiber is held between conventional reinforcing substrates.

FIG. 12 is a perspective view of an optical fiber reinforced using a conventional reinforcing substrate.

FIG. 13 is a sectional view of an optical fiber reinforced using a conventional reinforcing substrate.

FIG. 14 is a plan view showing a state in which an optical fiber reinforced by using a conventional reinforcing substrate is formed so as to be accommodated in an extra length storage body.

[Explanation of symbols]

 1 Hot melt film 2 Convex curved surface 3 Glass ceramic plate

Claims (1)

(57) [Scope of request for utility model registration] On one side of the 1. A tape-like hot-melt film, a plurality of glass-ceramic plate of rectangular shape with the both end faces an arcuate convex surface is arcuate convex piece of the glass ceramic plate
The surface is paired with the arc-shaped convex curved surface of the adjacent glass ceramic plate.
A reinforcing substrate for an optical fiber fusion splicing part, which is linearly affixed in a facing state .