JPH06273624A - Grinding method for optical fiber - Google Patents

Abstract

PURPOSE:To fix the end part of an optical fiber to a mouth piece with an adhesive without using a fixing jig to grind it and to detach the optical fiber from the mouth piece after grinding. CONSTITUTION:An end part of an optical fiber 1 is inserted to a mouth piece 3 so that it projects to the front of the mouth piece 3, and this end part 2 is fixed to the mouth piece 3 by a liquid soluble material 4 and is ground. Consequently, the end part 2 of the optical Fiber 1 is easily ground because of being adhered to the mouth piece 3. Since the optical fiber 1 is detached from the mouth piece 2 after grinding, the optical fiber 1 can be used for a desired purpose, and the field of the use is extended. Since the front shape of the optical fiber 1 is miniaturized, an apparatus or a connection part using this optical fiber 1 can be miniaturized. The end part 2 is superior in thermal resistance.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a polishing method used for polishing an end portion of an optical fiber strand.

[0002]

2. Description of the Related Art An end portion of an optical fiber element, particularly an end surface thereof, has a high optical coupling efficiency when it is abutted with an end surface of another optical fiber, or light entering and exiting from the same end surface. Polishing is performed so that the light can be efficiently input and output. In order to polish the end face of the optical fiber strand, the optical fiber strand must be fixed as it is.

Therefore, conventionally, in the case of an individual optical fiber element wire, the end face thereof is fixed by a jig and polished, and in the case of a Banfor fiber in which a large number of optical fiber element wires are converged, it is passed through a mouthpiece, It was fixed to the base with an adhesive and then polished.

[0004]

However, the above-mentioned polishing method has the following problems. ． In the polishing method in which the jig is used for fixing, the end portion of the optical fiber element wire is cracked or broken, resulting in poor yield and poor workability and work efficiency. ． In the polishing method of fixing to the base with the adhesive, there is no particular problem during polishing, but since the optical fiber element wire cannot be removed from the base after polishing, it is used as a light guide while being fixed to the base. When used as a light guide, the base part has high heat resistance due to the high heat of the light source, but the heat resistance of the adhesive is limited. There was a problem of being influenced by sex.

An object of the present invention is to polish an end of an optical fiber element wire by fixing it to a die with an adhesive without using a fixing jig.
Moreover, it is to realize a method for polishing an optical fiber element wire which allows the optical fiber element wire to be removed from the die after polishing.

[0006]

As shown in FIG. 1, the method of polishing an optical fiber element wire of the present invention uses an end piece 2 of the optical fiber element wire 1 so that the end portion 2 of the optical fiber element wire 1 is projected toward the tip of the mouthpiece 3. The end portion 2 is inserted, the end portion 2 is fixed to the mouthpiece 3 with the liquid-soluble substance 4, and the end portion 2 is polished.

[0007]

In the polishing method for optical fiber of the present invention, the base 3
Since the optical fiber element wire 1 inserted in the inside is fixed to the mouthpiece 3 with a liquid-soluble substance (for example, pine or lantern) 4, after polishing, the liquid-soluble substance 4 is dissolved with a liquid 5, for example, alcohol as shown in FIG. The optical fiber strand 1 can be detached from the base 3.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the polishing method for optical fiber strands of the present invention will be described in detail with reference to FIG. In this embodiment, a case where the end face 6 of the end 2 of the optical fiber element wire 1 is polished will be described.

In FIG. 1, the liquid-soluble substance 4 is applied to the end 2 of the optical fiber element wire 1 from which the coating layer 7 has been peeled off, and then the end 2 is inserted into the base 3 to remove the end 2 The tip 2 is fixed to the base 3 with the liquid-soluble substance 4 while the tip is projected from the base 3. In this state, the end face 6 of the end 3 of the end 2
Is mirror-polished with a conventional polishing tool.

Although pine syrup is suitable as the liquid-soluble substance 4, any substance other than pine syrup may be used as long as it can be dissolved in a liquid after polishing. Alcohol, for example, is suitable as the dissolving liquid, but any other liquid can be used as long as it can dissolve the liquid-soluble substance 4.

The optical fiber element wire 1 whose end face 6 has been polished by the polishing method of the present invention is put into the liquid at the end portion 2 together with the base 3 to dissolve the liquid-soluble substance 4, and the optical fiber element wire 1 Is removed from the base 3. This polished optical fiber element wire 1 is used for a desired purpose. The polishing method of the present invention is not limited to polishing the end surface 6 of the end 2 of the optical fiber strand 1, but can also polish the outer peripheral surface 8 of the end 2 of the optical fiber strand 1.

[0012]

The method of polishing an optical fiber strand according to the present invention has the following effects. ． Since the end portion 2 of the optical fiber strand 1 is bonded to the base 3 with the liquid-soluble substance 4, it is easy to polish. ． After polishing, the liquid-soluble substance 4 can be dissolved in a liquid to remove the optical fiber strand 1 from the base 3. Therefore, after polishing, only the optical fiber strand 1 is used, and the optical fiber strand 1 is used as desired. Can be used for a wide range of applications. ． After the liquid-soluble substance 4 is dissolved, the same end portion 2 becomes only the optical fiber element wire 1, so that the tip shape of the optical fiber element wire 1 becomes smaller, and the device or connection part using this optical fiber element wire 1 becomes smaller. Can be downsized. ． Since the liquid soluble substance 4 is not attached to the end portion 2,
The end portion 2 has excellent heat resistance.

[Brief description of drawings]

1A and 1B are process explanatory views showing an embodiment of a method for polishing an optical fiber element wire of the present invention.

2 (a) and 2 (b) are process explanatory views when the optical fiber element wire is removed from the die after being polished by the method for polishing an optical fiber element wire of the present invention.

[Explanation of symbols]

 1 optical fiber strand 2 end 3 base 4 liquid soluble substance

Claims (1)

[Claims] 1. An end portion 2 of an optical fiber element wire 1 is inserted into the base 3 so as to project toward the tip of the base 3, and the end 2 is fixed to the base 3 with a liquid-soluble substance 4. A method for polishing an optical fiber element wire, which comprises polishing the end portion 2.