JPS6029414Y2 - Optical fiber processing jig - Google Patents

Description

[Detailed description of the invention] (al Technical field of the invention This invention relates to an optical fiber processing jig, and in particular to an optical fiber processing jig that performs end face polishing, cleaning, and vapor deposition of an optical fiber in the same jig. It is.

(b) Background of technology With the progress of optical communication systems, many optical components related to demultiplexing, branching, connections, etc. have reached the practical stage.

The mainstream of these optical components is generally a three-dimensional component arrangement using lenses.

However, this format has problems with reliability, cost, etc.

Therefore, as a fiber-processed optical circuit replacing these lenses, etc., the end face of an optical fiber is polished and a dielectric multilayer film is deposited on the polished surface.

However, conventional polishing is performed on each optical fiber one by one, and vapor deposition on the polished surface is performed using an optical fiber processing jig having a plurality of flat grooves, but in this case, the polished surfaces of each optical fiber are uneven. Moreover, there was a problem that it was not suitable for mass production.

Therefore, there is a need for an optical fiber processing jig that is suitable for mass production and has high reliability.

(C) Prior Art and Problems Figure 1 shows the conventional optical fiber processing jig described above, with a being a front view, b being a side view, and 1 being an optical fiber mounting table made of metal such as stainless steel. A plurality of flat grooves 11 are provided in the longitudinal direction of the optical fiber mounting table 1, and a screw hole 12 into which the presser metal fitting 3 is screwed is bored.

Reference numeral 2 denotes an optical fiber to be processed. Reference numeral 3 denotes a holding fitting made of metal such as stainless steel. The holding fitting 3 is provided with a plurality of flat grooves 31 and has an insertion hole 32 for a screw 4 bored therein.

The end face polishing work of the optical fiber 2 to be processed is performed by separately processing one optical fiber 2, and after each optical fiber 2 is processed, the polished optical fiber 2 is inserted into a plurality of flat grooves 11 formed on the optical fiber mounting table 1. With the presser fitting 3 fitted, place the presser metal fitting 3 and screw it in place with the screw 4.

Then, a vapor deposited film is formed on the end face of the optical fiber 2.

However, with this jig, each optical fiber 2 is set in the flat groove 11, so the work efficiency is poor and it is not suitable for mass production.
Moreover, there was a drawback that the polished surface was uneven.

(d) Purpose of the invention In view of the above-mentioned drawbacks of the conventional technology, the present invention provides an optical fiber processing jig in which the flat grooves for fixing optical fibers are made into flat grooves that can arrange a large number of optical fibers, thereby improving mass productivity. The purpose is to

(e) Structure of the invention In order to achieve the above-mentioned object, the present invention comprises an optical fiber mounting table having a required inclination angle at one end and a flat groove of a predetermined width in the longitudinal direction, and the optical fiber mounting table. two presser metal fittings, each of which has a flat groove corresponding to the optical fiber mounting table, the holding metal fitting having an inclination angle matching the inclination angle at the tip thereof;
This is achieved by attaching a screw for screwing the presser fitting to the optical fiber mounting table and a presser plate for adhering the optical fiber during polishing.

(f) Embodiments of the invention Hereinafter, embodiments of the optical fiber processing jig according to the invention will be described in detail with reference to the drawings.

Figure 2 is a front view, b is a perspective view, C is a side view during polishing, and d is a side view during vapor deposition for explaining one embodiment of the present invention, and the same parts as the previous one are the same. Reference numeral 6 denotes an optical fiber mounting table made of metal, such as stainless steel, which has an inclined surface 63 forming an inclination angle of θ at one end of the optical fiber mounting table 6, and a flat groove 61 on the upper surface in the longitudinal direction. Further, screw holes 62 for screwing the presser fittings 7A and 7B are bored.

Reference numeral 7A denotes a presser metal fitting made of metal such as stainless steel, provided with a flat groove 71A corresponding to the flat groove 61 of the optical fiber mounting table 6, and having an insertion hole 72A for the screw 4, and 7B.
is made of metal, such as stainless steel, and has an inclined surface 73B formed with an inclination angle of θ at one end, a flat groove 71B corresponding to the flat groove 61 of the optical fiber mounting table 6, and an insertion hole 72B for the screw 4. 8 is a holding plate made of glass or the like, and 9 is an adhesive.

With the plurality of optical fibers 2 closely arranged in the flat grooves 61 formed on the optical fiber mounting table 6, first apply an adhesive 9, for example, a cyanoacrylate adhesive, to the polished side, and then apply a second layer using the presser plate 8. As shown in FIG. C, after the other end is pressed and bonded and the other end is screwed onto the metal fitting 7A with the screw 4, the polished surface of the optical fiber is polished along the inclined surface 63.

It is preferable that the optical fiber 2 and the optical fiber mounting table 6 are sufficiently bonded with the adhesive 9 using the presser plate 8 so that there are no gaps in order to prevent damage such as cracks to the optical fiber due to this polishing operation. .

When the polishing work is finished, a dielectric multilayer film is deposited on the polished surface, but the adhesive 9 becomes hot during the deposition process, causing the adhesive 9 to melt.
There is a possibility that the evaporation film will be softened and inhibit the vapor deposition, and furthermore, there is a possibility that the evaporation film will be formed on areas other than the polished end face of the optical fiber 2.

Therefore, after cleaning and removing the holding plate 8 with an organic solvent such as acetone, the inclined surface 73B of the holding plate 7B is aligned with the inclined surface 63 of the optical fiber mounting table 6, and screwed with the screw 4, as shown in FIG. 2d. If a predetermined vapor deposition operation is performed on the polished end surface of the optical fiber 2 in the attached state, no vapor deposited film will be formed on the surface other than the polished end surface of the optical fiber 2, as described above.

When the vapor deposition operation is completed, an optical fiber-processed optical circuit is formed on the polished end face of the optical fiber 2.

In this way, a plurality of optical fibers 2 are closely arranged in the flat groove 61, and polishing, cleaning, and vapor deposition can be efficiently performed without removing the optical fibers.

(g) Effect of the invention As is clear from the above explanation, the optical fiber processing jig according to the present invention can polish and deposit a large number of optical fibers compared to conventional jigs that process polishing and vapor deposition separately. Since the work can be done with the same jig, work efficiency is dramatically improved, and it greatly contributes to improving the reliability of optical fiber processing type optical circuits.

[Brief explanation of drawings]

Figure 1 is a diagram for explaining a conventional optical fiber processing jig.
2 is a front view, b is a side view, and FIG. 2 is a front view for explaining an embodiment of the optical fiber processing jig according to the present invention.
is a perspective view, C is a side view during polishing, and d is a side view during vapor deposition. In the figure, 1 and 6 are optical fiber mounting tables, 2 is an optical fiber, 3, 7A and 7B are holding fittings, 4 is a screw, and 8
is a holding plate, 9 is adhesive, 11 and 31 are flat grooves, 12 and 62 are screw holes, 32.72A and 72B are insertion holes, 61, 71A and 71B are flat grooves, 63 and 73B
indicate inclined planes, respectively.

Claims (1)

[Scope of utility model registration request] an optical fiber mounting table having a predetermined inclination angle formed at one end and a flat groove of a predetermined width in the longitudinal direction, and a presser metal fitting having an inclination angle matching the inclination angle at the tip of the optical fiber mounting table; It is characterized by consisting of two holding metal fittings provided with flat grooves corresponding to the optical fiber mounting table, a screw for screwing the holding metal fittings onto the optical fiber holding table, and a holding plate for adhering the optical fiber during polishing. Optical fiber processing jig.