JPS5916890Y2 - fiber optic holder - Google Patents

Description

[Detailed description of the invention] The present invention is an optical communication device for temporarily and easily making optical connections between two devices and optical fiber cables and between fiber cables during inspections, experiments, etc. This relates to the structure of the fiber holder.

Conventionally, this type of temporary optical fiber connection method generally includes a butting method using a V-shaped groove holder and a butting method using a fine adjustment table.

These conventional methods will be explained below with reference to the drawings.

First, in Fig. 1 showing the V-groove fitting method, 1 is a V-groove holder, 11 is a ■groove, 12 is a semicircular hole, 2 is an optical fiber cable, 21 is a cladding part, 22 is a cord part, 3 is a magnet shows.

■The clad part 21 and the cord part 22 of the optical fiber cable 2 are placed on the groove part 11 and the semicircular hole part 12 of the groove holder 1, respectively, and the magnet 3 is placed on top of them to form a holder. The optical fiber cables 2 are butted and connected.

Next, one of the other conventional techniques, the fine adjustment table matching method, was applied to the second method.
As shown in the figure.

In Fig. 2, 4 is a ■ groove holder, 11 is a V groove part, and 12 is a
2 is a semicircular hole, 2 is an optical fiber pull, 21 is a cladding portion, 22 is a cord portion, 3 is a magnet, and 5 is a fine adjustment table in the X, Y, and Z directions.

■The optical fiber cable 2 is formed by forming a holder with each other using the same method as the refreshing combination method, and by moving the fine adjustment table 5.
Match and connect.

However, in the above two methods, the diameter of the optical fiber is 130 mm.
µ, it is difficult to align the axes of the optical fiber cables 2 with each other as shown in Figures 1 and 2, requiring skill and time. The major drawback was that it was impossible to connect on a large table.

In order to eliminate these drawbacks, the present invention is characterized by integrating the centering part and the holding part of the optical fiber cable.
The purpose is to provide a holder that is inexpensive, has excellent workability, and enables connections with excellent optical performance.

Describing the structure of the present invention, the present invention has a structure in which two stepped semi-cylindrical bodies having a semicircular cross section at both the small diameter tip and the base are joined and held facing each other. The tip part is provided with a V-shaped groove for holding the optical fiber at the radial center of the semicircular cross section, and the inner space part of the base part temporarily determines the axial position of the optical fiber. Therefore, the optical fiber holder is provided with a mechanism for holding the optical fiber cord connected to the optical fiber.

Next, one embodiment of the present invention will be described in detail with reference to FIG.

In Fig. 3, 2 is an optical fiber cable, 21 is a cladding part, 22 is a cord part, 6 is a semicircular column, 61 is a V-shaped groove, 62 is a semicircular groove, 7 is a leaf spring, 8 is a hinge, and 9 is a Shows snap-type fasteners.

Figure a shows a semicircular column 6 with a semicircular cross section and a V-shaped groove 61 at the center of the radius, and figure b shows the appearance of two semicircular columns 6 mechanically combined with a hinge 8 and a snap-type stopper 9. shows.

To operate this, remove the snap-type stopper 9 from the state shown in Figure B, open the two semicircular columns 6 around the hinge 8 to the state shown in Figure 0, and then open the V-shaped groove 61 of the semicircular column 6. Half round groove 6
2, the cladding portion 21 of the optical fiber cable 2. The cord parts 22 are placed in correspondence with each other, the optical fiber cable 2 is sandwiched between the two semicircular columns 6, and the optical fiber cable 2 is held and fixed by the plate spring 7.

This operation forms a fiber holder as shown in Figure d.

Therefore, when this fiber holder is used, when two optical fiber cables 2 are to be optically connected, it is only necessary to use a cylindrical tube 10 as shown in FIG. 4.

In addition, as shown in FIG. 5, a conventional optical fiber receptacle 10
By inserting this fiber holder into the fiber holder, it is possible to apply the connection to utilize the fact that the light beam 102 passing through the rod lens 101 converges on the focal point 103.

As is clear from the above explanation, if the holder of the present invention is adopted, it is inexpensive and has excellent workability, and optically excellent connections are reliably made. The effect when connecting is great.

[Brief explanation of the drawing]

1 and 2 show top, side and perspective views of a conventional connection holder and its parts. FIG. 3 is a front view, a top view, and a side view of an embodiment of the present invention;
A sectional view is shown, and FIGS. 4 and 5 are sectional views of an application example of the present invention. The symbols used in the drawings indicate the following. 1...■Groove holder, 11...V groove part,
12... Semicircular hole part, 2... Optical fiber cable, 21... Clad part, 22...
・・Cord part, 3・・・Magnet, 4・・・・
...V-groove holder, 5...Fine adjustment table, 6...
・Semi-cylinder, 61... V-shaped groove, 62...
・Half-round groove, 7... Leaf spring, 8... Hinge, 9... Snap type stopper, 10...
・Cylindrical tube, 100...Receptacle, 101・
...Rod lens, 102...Light ray, 1
03...Focus.

Claims (1)

[Scope of utility model registration request] Two stepped semi-cylindrical bodies, both of which have semicircular cross-sections, face each other and are held together. A V-shaped groove for holding an optical fiber is provided, and the inner space of the base holds an optical fiber cord connected to the optical fiber in order to temporarily determine the axial position of the optical fiber. An optical fiber holder characterized by being provided with a mechanism for.