JPS58209705A - Self-matching type multicore optical connector - Google Patents

Abstract

PURPOSE:To reduce the cost of manufacture and to hold excellent connection precision and reproducibility, by providing each core with a magnetic part and arraying N and S magnetic poles adequately, and permitting both cores to match themselves with each other by attraction and repulsion between magnetic parts when abutting on each other. CONSTITUTION:One core 5 is connected to the other core 5' and plural magnetic domains are formed in their abutting end surfaces corresponding to each other. The magnetic domains of one core are magnetized oppositely to those of the other core 5. Namely, N polses of magnetic domains of the core 5' correspond to S poles of the other, and S poles correspond to N poles respectively. Therefore, corresponding magnetic domains generate attractive force. When both cores 5 and 5' abut on each other in a housing 4 repulsive force is generated in a mismatching state or attracting force is generated in a matching state is generated and they are connected in the accurate matching state.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a multi-core optical connector that connects several original fibers at once.

Conventionally, the connector of this building has been constructed as shown in FIG. In the figure, reference numeral 1.1 is an array of source fibers with a pair of connectors, and each column is an array of source fibers 2, each having a number of connectors. The connector for connecting these consists of a rectangular core 8 provided at each end of the optical fiber array 1 and a housing 4 having a rectangular insertion hole into which the core 8 is inserted. It is what it is. The core 8 maintains the alignment of the optical fiber array 1, aligns the optical fibers 2 to be connected during connection, and protects the end face of the light guide path of each fiber 2. Connection t--This is to ensure proper connection. When connecting, the cores 8 of each optical fiber array 7 are inserted into the insertion holes from both ends of the housing 4, and the end surfaces of both cores 8 are butted together inside the housing 4, thereby completing the connection. Was.

By the way, the connection conditions for the original 7-AIPA require that the connection loss be small and the immersion characteristics be good. Therefore, the dimensions of the core 8, the dimensions of the insertion hole of the housing 4, the dimension i11 between the original fibers 2 in the core 8, and the distance between the core 3 and the center of the original fiber 2 as shown in FIG. Dimension to top surface or side (2): 11t, lls
Each of these is precisely processed with a dimensional thickness of 2 to 3 μm or less to maintain good connection accuracy and solidity. For this reason, such connectors require special processing techniques, which makes the product expensive.

The present invention was made in consideration of the above circumstances, and the processing of the housing and core ← Especially precision! It can be produced at low cost without
In addition, it provides a self-aligned multi-core type connector ft that can maintain good accuracy and densification, and has a magnetic part formed on each core.

5 (fi pole'?i: The magnetic parts of the green and annular cores are arranged excessively and aligned with each other so that they attract or repel each other and become self-aligned. There is a characteristic in this point.

Hereinafter, the present invention will be explained with reference to FIGS. 2 to ≠FIG.

FIG. 2 shows an embodiment of the present invention. In the figure, 1.1 is an original fiber array, 2 is an original fiber, and 4 is a housing, which are almost the same as those explained in the conventional example. It is configured. 5 and 5' are magnetic cores. These magnetic cores 5
．． 5' is made slightly more aggressively than the insertion hole of the housing 4 so that n1 can move vertically and horizontally. Yotako's magnetic cores 5 and 5' are made of magnetic powders such as ferrite, samarium cobalt, and nickel cobalt, and 7-enol resin, epoxy resin, and polyphenylene resin.
It is molded from a material made of a combination of plastic kU, and as shown in FIG. Adjacent ones of these &B sections are magnetized in opposite directions. In other words, the positions of N and S are magnetized in the opposite direction G+: layer magnetization.

Further, the other core 5' connected to this core 5 has m number of magnetic domains formed on its opposing end faces so as to correspond to the magnetic domains of the core 5. This magnetic domain is magnetized in the opposite direction to the magnetic domain of the opposing core 5. In other words, the part facing the pole of the magnetic domain on the core 5' side is Stj
In addition, the portion facing the S pole is magnetized to the N pole.

An attractive force is generated between the opposing magnetic domains. Therefore, when the two cores 5, 5' are butted together in the housing 4, if they are not aligned, an anti-acid force is generated, and if they are aligned, a suction force is generated, which prevents the cores from trying to align themselves in the correct position. This means that connections can be made in an accurate matching state.

Therefore, there is no need to align the cores 5.degree. and 5' using the housing 4 as a guide, and there is no need to make the outer dimensions of the two particularly precise. Therefore, it can be optically fabricated using a normal processing method, and since it is a self-aligning type, it is extremely easy to handle the connections at low cost.

Next, FIG. 3 shows another embodiment of the core in the connector of the present invention. In this figure, ■ is the original fiber array,
2 is the original fiber, and 6 is the magnetic core. This magnetic core 6
It is divided into Hiro's magnetic domain. These magnetic domains are formed symmetrically with respect to the central axis of the optical fiber row 1 that is in contact with them, and are oriented S= along the length direction of the optical fiber 2, and adjacent magnetic domains are opposite to each other. The magnetization is uneven in the direction. ! ! There is a precisely controlled positional relationship between the boundary of the magnetic domain and the original fiber l (IJ end circuit).On the other hand, the magnetic core (not shown) that faces and butts against this shell is located at a position T opposite to the N pole. It is conceived that the position T is the south pole, and the position opposite the south pole is the north pole.

Fig. 3 further shows another embodiment of the core I+II.

In the figure, 1 is an original fiber array, 2 is an optical fiber, and 7 is a magnetic core. On the end face of this magnetic core, magnetic domains divided into (number of unary fibers)+/ are layered. These magnetic domains are magnetized in a direction perpendicular to the length direction of the original fiber 2, and adjacent magnetic domains are stacked in opposite directions. ! ! The boundary between the magnetic domains and the end face of the optical fiber are magnetized so that the position between them is precisely controlled.

In any case, the magnetic core 6.7 shown in Fig. 3 and Fig.
Similarly to the core 5 shown in FIG. 2, the core 5 also self-aligns when a pair of insteps are butted against each other. Therefore, the advantage is that there is no need for particularly precise machining, unlike the conventional core and housing.

In addition, in the above-mentioned relaxation example, a structure was described in which 100 cores were molded from a mixed material containing a magnetic material. It may be formed and then pacified.

As explained above, the uninvented self-aligned multi-core optical fiber filter is manufactured by forming a magnetic part on the abutting surfaces of the cores provided at each end of the D-source fiber array. The magnetic part has N and S magnetic poles arranged appropriately, so when the cores are butted against each other, the two warm cores attract or repel, aligning the eyes to the normal position. For this reason, in order to match the end faces of the original fibers, it is uneasy to use the housing as a guide to match the cores, or to match the cores using the skin as a guide. It has the advantage that there is no need to mold the child to have a fine lip, it can be tabulated at low cost (quality and quality), and it is still good quality.

[Brief explanation of the drawing]

Fig. 1(a) is a square drawing of a 2E rice star, (b) is a drawing of Etsu Sakaki's core, and Fig. 2(a) is a square drawing of a connector according to the present invention. Figure, (b) is an inkstone drawing of the inside core, and Figure 3 is a practical drawing of the core pond according to the present invention.
The first picture and the second picture are illustrations showing an actual example of Koshi's Zara ni Penetration according to the present invention. l... Original fiber cable, 2... Optical fiber, 4... Housing, 5.5', fl
, ?・・・・・・Glowing casing core, 5a ・・・・End part.

Claims (1)

[Claims] A multi-fiber optical connector that connects optical fiber rows in which several mirror original fibers are aligned, wherein the alignment state of the single fiber row is maintained at each end of the connector of both optical fiber rows. Further, in the multi-core optical connector, a core is provided to protect the light guide path of the optical fiber, and the two optical fiber rows are connected by abutting the concave end portions of these cores. A magnetic portion is provided on the abutting end surfaces of both cores, and these magnetic portions are divided into n-Pn magnetic domains such that the magnetic holes of each core correspond to each other, and A self-matching shape connector characterized in that the magnetic domains between the pairs of connectors are magnetized in opposite directions.