WO2024028954A1 - Optical connector and manufacturing method - Google Patents

Optical connector and manufacturing method Download PDF

Info

Publication number
WO2024028954A1
WO2024028954A1 PCT/JP2022/029531 JP2022029531W WO2024028954A1 WO 2024028954 A1 WO2024028954 A1 WO 2024028954A1 JP 2022029531 W JP2022029531 W JP 2022029531W WO 2024028954 A1 WO2024028954 A1 WO 2024028954A1
Authority
WO
WIPO (PCT)
Prior art keywords
optical
core
fibers
fiber
block
Prior art date
Application number
PCT/JP2022/029531
Other languages
French (fr)
Japanese (ja)
Inventor
宜輝 阿部
和典 片山
Original Assignee
日本電信電話株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 日本電信電話株式会社 filed Critical 日本電信電話株式会社
Priority to PCT/JP2022/029531 priority Critical patent/WO2024028954A1/en
Publication of WO2024028954A1 publication Critical patent/WO2024028954A1/en

Links

Images

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/26—Optical coupling means
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/36—Mechanical coupling means

Definitions

  • the present disclosure relates to an optical connector for connecting and disconnecting multi-core optical fibers.
  • Multi-core optical connectors for multi-core optical fibers use the same MT ferrules used in normal multi-core optical connectors for single-core fibers, and each multi-core optical fiber is inserted into the MT ferrule and rotated one by one.
  • Alternative methods include aligning the core position on the multi-core optical fiber end face MT in advance, or aligning the core position on the multi-core optical fiber end face MT one by one and gluing and fixing it to a member in units of one or two.
  • an object of the present invention is to provide a multi-core optical connector for multi-core optical fibers that does not require rotational alignment of the multi-core optical fibers, and a method for manufacturing the same. .
  • an optical connector according to the present invention is an optical connector for removably connecting multi-core optical fibers, and the core position of the multi-core optical fibers to be connected is An optical waveguide block with optical input/output ends formed at the transferred positions is interposed between the multi-core optical fibers.
  • the optical connector according to the present invention is an optical connector that connects multi-core fibers including a plurality of multi-core optical fibers, comprising an optical waveguide block in which the ends of the two multicore fibers are respectively connected to connection surfaces on both sides;
  • the optical waveguide block is An optical input/output end is formed on each of the connection surfaces at a position where the core of the multi-core optical fiber appearing at the end of the multi-core fiber to be connected comes into contact, and from one of the connection surfaces. It is characterized in that an optical waveguide is formed on the other connecting surface to connect the corresponding optical input/output ends.
  • the manufacturing method according to the present invention is a manufacturing method of an optical connector that connects multi-core fibers in which a plurality of multi-core optical fibers are arranged in parallel,
  • an optical waveguide block in which the ends of the two multicore fibers are respectively connected to the connection surfaces at both ends,
  • On each of the connection surfaces of the optical waveguide block a position where the core of the multi-core optical fiber appearing at the end of the multi-core fiber to be connected hits is an optical input/output end, and one of the connection surfaces It is characterized by forming an optical waveguide connecting the corresponding optical input/output ends from the connecting surface to the other connecting surface.
  • This optical connector has an optical waveguide block on which an optical waveguide is drawn, and on both connection surfaces of the optical waveguide block, the optical input/output of the optical waveguide is at the position where the core position of each multi-core fiber to be connected is transferred.
  • the edges are formed. Therefore, multi-core fibers can be connected to each other without rotationally aligning each multi-core fiber.
  • the present invention can provide a multi-core optical connector for multi-core optical fibers that does not require rotational alignment of the multi-core optical fibers, and a method for manufacturing the same.
  • the optical waveguide block of the optical connector according to the present invention includes: On one of the connection surfaces, one of the multi-core fibers is adhesively fixed so that each core of the multi-core optical fiber is connected to the optical input/output end, and on the other connection surface, The other multi-core fiber whose end portion is an MT ferrule is removably connected, and each core of the multi-core optical fiber and the optical input/output end are connected when the other multi-core fiber is connected.
  • the MT ferrule is characterized in that it has a guide pin that fits into the guide pin insertion hole of the MT ferrule so as to be connected to each other.
  • the optical waveguide block of the optical connector includes: The structure is such that it can be divided into one male block having the connecting surface and the other female block having the connecting surface, and are combined by fitting the guide pin of the male block into the guide pin insertion hole of the female block.
  • the structure is such that it can be divided into one male block having the connecting surface and the other female block having the connecting surface, and are combined by fitting the guide pin of the male block into the guide pin insertion hole of the female block.
  • the male block one of the multicore fibers is adhesively fixed on the connection surface so that each core of the multicore optical fiber and the optical input/output end are respectively connected;
  • the other multicore fiber is adhesively fixed to the connection surface so that each core of the multicore optical fiber and the optical input/output end are connected to each other, and
  • the optical waveguides may be located at predetermined positions, each of which appears on a merging surface where the male blocks are merged.
  • the present invention can provide a multi-core optical connector for multi-core optical fibers that does not require rotational alignment of the multi-core optical fibers, and a method for manufacturing the same.
  • multi-core optical fibers can be connected to each other without rotationally aligning the multi-core optical fibers. It becomes easier to manufacture a multi-core optical connector for multi-core optical fibers.
  • FIG. 1 is a diagram illustrating an optical connector according to the present invention.
  • FIG. 3 is a diagram illustrating an optical waveguide block included in the optical connector according to the present invention.
  • FIG. 2 is a schematic diagram of a connection end surface of an MT ferrule in a first example of an embodiment of an optical connector according to the present invention.
  • FIG. 2 is a schematic diagram of a connection end surface of an optical waveguide with an MT ferrule in a first example of an embodiment of an optical connector according to the present invention.
  • FIG. 2 is a schematic diagram of a connection end surface of a multi-core optical fiber that is adhesively and fixedly connected to an optical waveguide in a first example of an embodiment of an optical connector according to the present invention.
  • FIG. 2 is a schematic diagram of a connection end surface of an optical waveguide that is adhesively and fixedly connected to a multi-core optical fiber in a first example of an embodiment of an optical connector according to the present invention. It is a figure explaining the manufacturing method of the optical connector concerning the present invention. It is a schematic diagram showing a second example of an embodiment of an optical connector concerning the present invention. It is a schematic diagram of the multi-core optical fiber end surface of the left side plug in the second example of the embodiment of the optical connector according to the present invention.
  • FIG. 7 is a schematic diagram of a connection end surface of an optical waveguide adhesively fixed to a multi-core optical fiber of a left plug in a second example of an embodiment of an optical connector according to the present invention.
  • FIG. 7 is a schematic diagram of the connection end surface of the optical waveguide on the side that is not adhesively fixed to the multi-core optical fiber of the left plug in the second example of the embodiment of the optical connector according to the present invention.
  • FIG. 7 is a schematic view of the connection end surface of the optical waveguide on the side that is not adhesively fixed to the multi-core optical fiber of the right plug in the second example of the embodiment of the optical connector according to the present invention.
  • FIG. 1 is a schematic diagram illustrating an optical connector 301 of this embodiment.
  • the optical connector 301 is an optical connector that connects multi-core fibers (50a, 50b) including a plurality of multi-core optical fibers,
  • An optical waveguide block 100 is provided in which the ends (51a, 51b) of two multicore fibers are respectively connected to connection surfaces (11a, 11b) on both sides.
  • FIG. 2 is a diagram illustrating the optical waveguide block 100.
  • the optical waveguide block 100 is An optical input/output end 12 is formed on each connection surface (11a, 11b) at a position where the core 55 of the multicore optical fiber appearing at the end (51a, 51b) of the multicore fiber to be connected comes into contact. It is also characterized in that an optical waveguide 13 connecting the corresponding optical input/output ends 12 is formed from one connection surface 11a to the other connection surface 11b.
  • the optical waveguide block 100 is On the connection surface 11a, one multi-core fiber 50a is adhesively fixed so that each core of the multi-core optical fiber is connected to the optical input/output end 12, and on the connection surface 11b, the end portion is MT.
  • the MT ferrule is arranged so that the multi-core fiber 50b, which is the ferrule 200, is removably connected, and so that each core of the multi-core optical fiber and the optical input/output end 12 are connected to each other when the multi-core fiber 50b is connected. It is characterized by having a guide pin 21 that fits into a guide pin insertion hole 22 of 200.
  • a multi-core optical connector 301 for multi-core optical fibers includes an MT ferrule 200 to which four tape-shaped multi-core optical fibers are adhesively fixed, and four fibers on a connection surface 11a on the opposite side of the connection side to the MT ferrule 200.
  • the plug 150 includes an optical waveguide block 100 to which multi-core optical fibers are adhesively fixed and built into a plug member 155.
  • FIG. 3 is a diagram illustrating the end surface of the MT ferrule 200 on the plug 150 side.
  • a multi-core optical fiber end portion 51b of the multi-core fiber 50b appears on the end face. The positions of the cores 55 of each of the four multi-core optical fibers are not aligned.
  • the multi-core optical fiber end 51 is polished. Further, a guide pin hole 22 into which the guide pin 21 of the plug 150 fits is formed in the end surface.
  • FIG. 4 is a diagram illustrating the end surface of the plug 150 on the connection side with the MT ferrule 200.
  • the plug 150 includes an optical waveguide block 100, a flat substrate 120, a guide pin 21, and a plug member 155.
  • a V-groove 101 is formed in the optical waveguide block 100, a guide pin 21 is arranged in the V-groove 101, and the structure is covered with a flat substrate 120.
  • the optical waveguide block 100 covered with the flat substrate 120 is then housed in the plug member 155 to form the plug 150.
  • the optical input/output end 12 of the optical waveguide 13 is formed at a position where the arrangement of the core 55 of the multi-core optical fiber end portion 51b explained in FIG.
  • the multicore fibers can be connected to each waveguide 13 of the optical waveguide block 100 without rotationally aligning each multicore optical fiber of the multicore fiber 50b.
  • Each core of a 50b multi-core optical fiber can be connected.
  • FIG. 5 is a diagram illustrating a member 160 for adhesively fixing the multi-core fiber 50a to the connection surface 11a of the optical waveguide block 100.
  • FIG. 5 shows an end surface of the member 160 on the optical waveguide block 100 side.
  • the multi-core optical fiber of the multi-core fiber 50a is placed in the V-groove 165 of the V-groove substrate 161, and the lid substrate 162 is placed on top and fixed with adhesive. With this configuration, the member 160 and the multi-core optical fiber are integrated, and the position of the core 55 of each multi-core optical fiber is not aligned.
  • the multi-core optical fiber end 51a is polished.
  • FIG. 6 is a diagram illustrating the end surface of the plug 150 on the side that is adhesively fixed to the member 160.
  • the optical input/output end 12 of the optical waveguide 13 is formed at a position where the arrangement of the core 55 of the multi-core optical fiber end portion 51a described in FIG. 5 is transferred. Therefore, when the end face described in FIG. 5 and the end face in FIG. 6 are overlapped, the position of the core 55 of the multi-core optical fiber end portion 51a and the position of the optical input/output end 12 of the optical waveguide 13 match.
  • the multi-core optical fiber 50a can be connected to each waveguide 13 of the optical waveguide block 100 without rotationally aligning each multi-core optical fiber of the multi-core optical fiber 50a.
  • Each core of a multi-core optical fiber can be connected.
  • FIG. 7 is a diagram illustrating a manufacturing method for manufacturing the optical connector 301.
  • the manufacturing method is When producing an optical waveguide block 100 in which the ends (51a, 51b) of two multicore fibers (50a, 50b) are respectively connected to the connection surfaces (11a, 11b) at both ends, On each connection surface (11a, 11b) of the optical waveguide block 100, determine the position where the core of the multicore optical fiber appearing at the end (51a, 51b) of the multicore fiber (50a, 50b) to be connected hits. forming optical input/output ends 12 (step S01); and forming an optical waveguide 13 connecting the corresponding optical input/output ends 12 from the connection surface 11a to the connection surface 11b (step S02). It is characterized by
  • the optical waveguide block 100 is manufactured by a method of irradiating the inside of a glass member with a focused laser beam to form a core (optical waveguide 13).
  • a method of irradiating the inside of a glass member with a focused laser beam to form a core optical waveguide 13.
  • the route of the core within the glass member can be formed not only in a plane but also in three dimensions. Therefore, as shown in FIG. 2, the optical waveguide 13 can be formed such that the optical input/output ends 12 are arranged at desired positions on both end faces of the glass member.
  • step S01 the position of the core 55 of the multi-core optical fiber on the end face shown in FIGS. 3 and 5 is acquired as an image, and the position is digitized using coordinates.
  • the coordinates are applied to the end surfaces of the glass member (the connection surfaces 11a and 11b of the optical waveguide block 100), and are defined as the starting point and the ending point (light input/output end 12) of the optical waveguide 13.
  • step S02 the optical waveguide 13 is drawn by moving the condensing position of the laser beam from the starting point to the ending point.
  • the optical waveguide block 100 and the flat substrate 120 are adhesively fixed to the plug member 155.
  • the optical waveguide block 100 has two V-grooves 101 in which guide pins 21 are installed.
  • a guide pin 21 is adhesively fixed to the V-groove 101 with the optical waveguide block 100 and the flat substrate 120 stacked so as to cover the V-groove 101.
  • the guide pin 21 employs a guide pin used in an MT connector.
  • the center (intersection of two diagonal lines) of the four cores 55 connected to the core 55 of the multi-core optical fiber fixed to the MT ferrule 200 is aligned with the cross-sectional center of the guide pin 21 on the connection surface 11b.
  • the depth of the V-groove 101 is designed and cut so that it is located on the connected imaginary line.
  • the four multicore optical fibers of the multicore fiber 51b are adhesively fixed to the optical fiber insertion holes of the MT ferrule 200, and the ends 51b are polished.
  • the connection end surface of the MT ferrule 200 is designed so that the optical fiber insertion hole is located on an imaginary line connecting the centers of the guide pin holes 22.
  • connection surface 11a of the optical waveguide block 100 and the end surface of the member 160 are polished at an angle of 8 degrees to suppress Fresnel reflection in the connection of optical fibers.
  • the optical waveguide block 100 and the member 160 are aligned by active alignment in a state where light is conducted to the core of the multi-core optical fiber, and are fixed by adhesive.
  • the end surface of the MT ferrule 200 and the connection surface 11b of the optical waveguide block 100 may be polished at right angles.
  • a refractive index matching material whose refractive index is matched to that of the core 55 and the optical waveguide 13 of the multi-core optical fiber is filled between the two to eliminate Fresnel reflection caused by the difference in refractive index between the core 55 and the optical waveguide 13 and air. to achieve high return loss.
  • the end surface of the MT ferrule 200 and the connecting surface 11b of the optical waveguide block 100 may be polished at an angle of 8 degrees. A high return loss can be obtained without using a refractive index matching material.
  • the present invention can also be implemented as an MPO connector in which the MT ferrule is built into the plug housing and the guide pins and guide pin holes of the plug housings are fitted together within the adapter.
  • the optical waveguide side By incorporating the optical waveguide side into the plug housing of the MPO connector, the optical fiber and optical waveguide can be attached and detached simply by operating the plug housing.
  • FIG. 8 is a schematic diagram illustrating the optical connector 302 of this embodiment.
  • the optical connector 302 has a structure in which plugs of multi-core optical connectors are connected to each other instead of MT ferrules.
  • the optical waveguide block of the optical connector 302 can be divided into a male block 100a having a connection surface 11a and a female block 100b having a connection surface 11b. It has a structure that is assembled by fitting into the guide pin insertion hole 22 (present at a position not visible in FIG. 8) of the female block 100b.
  • the plug 150b includes a female block 100b, and is adhesively fixed to a member 160b at one end side (the connection surface 11b side of the female block 100b). That is, in the female block 100b, the multicore fibers 51b are adhesively fixed so that each core 55 of the multicore optical fiber and the optical input/output end 12 are connected to each other on the connection surface 11b.
  • FIG. 9 is a diagram illustrating a member 160b for adhesively fixing the multi-core fiber 50b to the connection surface 11b of the female block 100b.
  • FIG. 9 shows an end surface of the member 160b on the female block 100b side.
  • the multi-core optical fiber of the multi-core fiber 50b is placed in the V-groove 165 of the V-groove substrate 161, and the lid substrate 162 is placed on top and fixed with adhesive.
  • the member 160b and the multi-core optical fiber are integrated, and the position of the core 55 of each multi-core optical fiber is not aligned.
  • the multi-core optical fiber end 51b is polished.
  • FIG. 10 is a diagram illustrating the end surface of the plug 150b on the side that is adhesively fixed to the member 160b.
  • the optical input/output end 12 of the optical waveguide 13 is formed at a position where the arrangement of the core 55 of the multi-core optical fiber end portion 51b described in FIG. 9 is transferred. Therefore, when the end face described in FIG. 9 and the end face in FIG. 10 are overlapped, the position of the core 55 of the multi-core optical fiber end portion 51b and the position of the optical input/output end 12 of the optical waveguide 13 match.
  • the multi-core optical fibers of the multi-core fiber 50b can be connected to each waveguide 13 of the female block 100b without rotationally aligning each multi-core optical fiber of the multi-core optical fiber 50b.
  • Each core of optical fiber can be connected.
  • FIG. 11 is a diagram illustrating the combined surface 15b of the female block 100b on the side that is not adhesively fixed to the member 160b.
  • the input/output end 12 of the optical waveguide 13 is arranged at a predetermined position on the combining surface 15b.
  • the input/output ends 12 of the connecting surface 11b of the female block 100b are located at the positions of each core 55 of the multi-core optical fiber to be adhesively fixed, whereas the input/output ends 12 of the joining surface 15b are located at predetermined positions. There is a difference in that.
  • FIG. 12 is a diagram illustrating the joining surface 15a of the male block 100a on the side that is not adhesively fixed to the member 160a.
  • the input/output end 12 of the optical waveguide 13 is also arranged at a predetermined position on the combining surface 15a.
  • a V-groove 101 is formed in the optical waveguide block 100a, a guide pin 21 is arranged in this V-groove 101, and the structure is covered with a flat substrate 120.
  • the optical waveguide block 100a covered with the flat substrate 120 is then housed in the plug member 155 to form a plug 150a.
  • Member 160a is the same as member 160 described in FIG.
  • the adhesively fixed end face of the member 160a of the male block 100a is the same as the end face described in FIG. 6.
  • the positions of the optical waveguides 13 that appear on the joining surface (15a, 15b) where the male block 100a and the female block 100b are joined are at predetermined positions, so that the optical connector 302 is free from rotational deviation of the multi-core optical fiber.
  • the multi-core optical fibers of the multi-core fibers (50a, 50b) can be connected to each other regardless of the configuration. Note that Fresnel reflection between the end faces is suppressed by depositing a refractive index matching agent on the combined surfaces (15a, 15b).
  • the male block 100a and the female block 100b may be manufactured using the manufacturing method described with reference to FIG. 7, respectively. Moreover, the male block 100a and the female block 100b may be created by cutting the optical waveguide block 100 created by the manufacturing method described in FIG. 7 along a plane parallel to the connection surface 11a and the connection surface 11b. In this case, the cut surface becomes the combined surface (15a, 15b).
  • Embodiments 1 and 2 an optical connector for a four-core multi-core optical fiber having four cores has been described, but the configuration of the present invention is not limited to a multi-core optical fiber having four cores, but is applicable to a multi-core optical fiber having four cores. It can also be applied to multi-core optical fibers. Regarding the number of pieces, it can be applied to 2 pieces or 8 pieces or more.
  • Optical waveguide block 100a Male block 100b: Female block 101: V groove 120: Flat substrate 150: Plug 155: Plug members 160, 160a, 160b: Member 161: V groove substrate 162: Lid substrate 165: V groove 200 :MT ferrule 301, 302: Optical connector

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mechanical Coupling Of Light Guides (AREA)
  • Optical Couplings Of Light Guides (AREA)

Abstract

The purpose of the present invention is to provide a multicore optical connector for multicore optical fibers which does not require rotational alignment of the multicore optical fibers, and a manufacturing method therefor.　An optical connector (301) according to the present invention connects multicore fibers (50a, 50b) each including a plurality of multicore optical fibers. The optical connector (301) is provided with an optical waveguide block (100) having connection surfaces (11a, 11b) on both sides to which ends (51a, 51b) of the two multicore fibers (50a, 50b) are respectively connected. The optical waveguide block (100) is characterized in that optical input/output ends (12) are formed in positions where cores (55) of the multicore optical fibers appearing at the ends (51a, 51b) of the multicore fibers (50a, 50b) to be connected come into contact with the respective connection surfaces (11a, 11b), and in that optical waveguides (13) connecting corresponding optical input/output ends (12) are formed from one connection surface (11a) to the other connection surface (11b).

Description

光コネクタ及び製造方法Optical connector and manufacturing method
　本開示は、マルチコア光ファイバを着脱接続するための光コネクタに関する。 The present disclosure relates to an optical connector for connecting and disconnecting multi-core optical fibers.
　複数のコアを有するマルチコア光ファイバについて、複数本のマルチコア光ファイバを一括接続するための多心光コネクタが報告されている。マルチコア光ファイバの接続では、接続端面で複数のコア位置を一致させることが必要である。マルチコア光ファイバ用多心光コネクタでは、通常のシングルコアファイバ用多心光コネクタで使用しているＭＴフェルールを用いており、ＭＴフェルール内でマルチコア光ファイバを挿入した状態で１本毎に回転させてマルチコア光ファイバ端面におけるコア位置を調心する方法、もしくは、あらかじめマルチコア光ファイバ端面ＭＴにおけるコア位置を１本毎に調心して部材に１本もしくは２本単位で接着固定して、その部材をＭＴフェルールに挿入することでマルチコア光ファイバ端面におけるコア位置を調心する方法がある（例えば、非特許文献１を参照。）。マルチコア光ファイバ用多心光コネクタの作製においては、１本毎に回転して接続端面におけるマルチコア光ファイバのコア位置を調心することが必要であった。 Regarding multi-core optical fibers having multiple cores, a multi-core optical connector for collectively connecting multiple multi-core optical fibers has been reported. When connecting multi-core optical fibers, it is necessary to match the positions of a plurality of cores at the connection end face. Multi-core optical connectors for multi-core optical fibers use the same MT ferrules used in normal multi-core optical connectors for single-core fibers, and each multi-core optical fiber is inserted into the MT ferrule and rotated one by one. Alternative methods include aligning the core position on the multi-core optical fiber end face MT in advance, or aligning the core position on the multi-core optical fiber end face MT one by one and gluing and fixing it to a member in units of one or two. There is a method of aligning the core position on the end face of a multi-core optical fiber by inserting it into a ferrule (for example, see Non-Patent Document 1). In manufacturing a multi-core optical fiber connector for multi-core optical fibers, it is necessary to rotate each fiber to align the core position of the multi-core optical fiber on the connection end surface.
　通常の多心光ファイバはテープ化されて一体化されており、マルチコア光ファイバを用いて多心光ケーブルを作製した場合も、光ケーブル内ではマルチコア光ファイバはテープ化されることになる。テープ化されたマルチコア光ファイバを単心に分離して、１本毎に回転調心してマルチコア光ファイバ用多心光コネクタを作製することは実用的ではない。複数心のマルチコア光ファイバを並べてテープ化する段階で、マルチコア光ファイバのコア位置を精密に回転調心した状態でテープ化できれば、マルチコア光ファイバ用多心光コネクタの作製時には回転調心が不要になる。しかしながら、テープ化段階でマルチコア光ファイバを回転調心することは難しく、将来的にテープ化する際に一定の精度で回転調心できるようになったとしても、光コネクタで求められる精度で回転調心することは困難であることが予想される。 Ordinary multi-core optical fibers are integrated into a tape, and even when a multi-core optical cable is made using multi-core optical fibers, the multi-core optical fibers will be integrated into a tape within the optical cable. It is not practical to separate taped multi-core optical fibers into single cores and rotate and align each core to produce a multi-core optical connector for multi-core optical fibers. If the core position of the multi-core optical fiber can be made into a tape with precise rotational alignment when multiple multi-core optical fibers are lined up and made into a tape, then rotational alignment will not be necessary when manufacturing a multi-core optical connector for multi-core optical fibers. Become. However, it is difficult to rotationally align multi-core optical fibers at the stage of tape production, and even if it becomes possible to rotate and align multicore optical fibers with a certain degree of accuracy when tape production is performed in the future, rotation alignment cannot be achieved with the precision required for optical connectors. It is expected that it will be difficult to understand.
　そこで、本発明は上記の事情に鑑み提案されたものであって、マルチコア光ファイバの回転調心が不要であるマルチコア光ファイバ用の多心光コネクタ及びその製造方法を提供することを目的とする。 Therefore, the present invention has been proposed in view of the above circumstances, and an object of the present invention is to provide a multi-core optical connector for multi-core optical fibers that does not require rotational alignment of the multi-core optical fibers, and a method for manufacturing the same. .
　前記課題を解決するために、本発明に係る光コネクタは、多心のマルチコア光ファイバを着脱可能に接続するための光コネクタであって、両側の接続面の、接続するマルチコア光ファイバのコア位置を転写した位置に光入出力端を形成した光導波路ブロックをマルチコア光ファイバ間に介在させる構成とした。 In order to solve the above problems, an optical connector according to the present invention is an optical connector for removably connecting multi-core optical fibers, and the core position of the multi-core optical fibers to be connected is An optical waveguide block with optical input/output ends formed at the transferred positions is interposed between the multi-core optical fibers.
　具体的には、本発明に係る光コネクタは、複数のマルチコア光ファイバが含まれる多心ファイバ同士を接続する光コネクタであって、
　２つの前記多心ファイバの端部が両側の接続面にそれぞれ接続される光導波路ブロックを備えており、
　前記光導波路ブロックは、
　それぞれの前記接続面に、接続しようとする前記多心ファイバの端部に現れている前記マルチコア光ファイバのコアが当たる位置に光入出力端が形成されていること、及び
　一方の前記接続面から他方の前記接続面へ、対応する前記光入出力端同士を結ぶ光導波路が形成されていること
を特徴とする。 Specifically, the optical connector according to the present invention is an optical connector that connects multi-core fibers including a plurality of multi-core optical fibers,
comprising an optical waveguide block in which the ends of the two multicore fibers are respectively connected to connection surfaces on both sides;
The optical waveguide block is
An optical input/output end is formed on each of the connection surfaces at a position where the core of the multi-core optical fiber appearing at the end of the multi-core fiber to be connected comes into contact, and from one of the connection surfaces. It is characterized in that an optical waveguide is formed on the other connecting surface to connect the corresponding optical input/output ends.
　また、本発明に係る製造方法は、複数のマルチコア光ファイバが並列する多心ファイバを接続する光コネクタの製造方法であって、
　２つの前記多心ファイバの端部が両端の接続面にそれぞれ接続される光導波路ブロックを作製するときに、
　光導波路ブロックのそれぞれの前記接続面において、接続しようとする前記多心ファイバの端部に現れている前記マルチコア光ファイバのコアが当たる位置を光入出力端とすること、及び
　一方の前記接続面から他方の前記接続面へ、対応する前記光入出力端同士を結ぶ光導波路を形成すること
を特徴とする。 Further, the manufacturing method according to the present invention is a manufacturing method of an optical connector that connects multi-core fibers in which a plurality of multi-core optical fibers are arranged in parallel,
When producing an optical waveguide block in which the ends of the two multicore fibers are respectively connected to the connection surfaces at both ends,
On each of the connection surfaces of the optical waveguide block, a position where the core of the multi-core optical fiber appearing at the end of the multi-core fiber to be connected hits is an optical input/output end, and one of the connection surfaces It is characterized by forming an optical waveguide connecting the corresponding optical input/output ends from the connecting surface to the other connecting surface.
　本光コネクタは、光導波路が描画された光導波路ブロックを有しており、光導波路ブロックの両接続面において、接続すべき各マルチコアファイバのコア位置を転写した位置に当該光導波路の光入出力端が形成されている。このため、それぞれのマルチコアファイバを回転調心することなく、多心のマルチコアファイバ同士を接続することができる。 This optical connector has an optical waveguide block on which an optical waveguide is drawn, and on both connection surfaces of the optical waveguide block, the optical input/output of the optical waveguide is at the position where the core position of each multi-core fiber to be connected is transferred. The edges are formed. Therefore, multi-core fibers can be connected to each other without rotationally aligning each multi-core fiber.
　従って、本発明は、マルチコア光ファイバの回転調心が不要であるマルチコア光ファイバ用の多心光コネクタ及びその製造方法を提供することができる。 Therefore, the present invention can provide a multi-core optical connector for multi-core optical fibers that does not require rotational alignment of the multi-core optical fibers, and a method for manufacturing the same.
　本発明に係る光コネクタの前記光導波路ブロックは、
　一方の前記接続面において、前記マルチコア光ファイバの各コアと前記光入出力端とがそれぞれ接続するように、一方の前記多心ファイバが接着固定されていること、及び
　他方の前記接続面において、前記端部がＭＴフェルールである他方の前記多心ファイバが着脱可能に接続されるように、且つ他方の前記多心ファイバを接続した時に前記マルチコア光ファイバの各コアと前記光入出力端とがそれぞれ接続するように、前記ＭＴフェルールのガイドピン挿入孔に嵌合するガイドピンを有していること
を特徴とする。 The optical waveguide block of the optical connector according to the present invention includes:
On one of the connection surfaces, one of the multi-core fibers is adhesively fixed so that each core of the multi-core optical fiber is connected to the optical input/output end, and on the other connection surface, The other multi-core fiber whose end portion is an MT ferrule is removably connected, and each core of the multi-core optical fiber and the optical input/output end are connected when the other multi-core fiber is connected. The MT ferrule is characterized in that it has a guide pin that fits into the guide pin insertion hole of the MT ferrule so as to be connected to each other.
　本発明に係る光コネクタの前記光導波路ブロックは、
　一方の前記接続面を有する雄ブロックと他方の前記接続面を有する雌ブロックに分割可能であり、前記雄ブロックのガイドピンが前記雌ブロックのガイドピン挿入孔に嵌合することで合体する構造であること、
　前記雄ブロックは、前記接続面において、前記マルチコア光ファイバの各コアと前記光入出力端とがそれぞれ接続するように、一方の前記多心ファイバが接着固定されていること、
　前記雌ブロックは、前記接続面において、前記マルチコア光ファイバの各コアと前記光入出力端とがそれぞれ接続するように、他方の前記多心ファイバが接着固定されていること、及び
　前記雌ブロックと前記雄ブロックが合体する合体面に現れる前記光導波路の位置は、それぞれが予め定められた位置であること
を特徴とするであってもよい。 The optical waveguide block of the optical connector according to the present invention includes:
The structure is such that it can be divided into one male block having the connecting surface and the other female block having the connecting surface, and are combined by fitting the guide pin of the male block into the guide pin insertion hole of the female block. There is something
In the male block, one of the multicore fibers is adhesively fixed on the connection surface so that each core of the multicore optical fiber and the optical input/output end are respectively connected;
In the female block, the other multicore fiber is adhesively fixed to the connection surface so that each core of the multicore optical fiber and the optical input/output end are connected to each other, and The optical waveguides may be located at predetermined positions, each of which appears on a merging surface where the male blocks are merged.
　本発明は、マルチコア光ファイバの回転調心が不要であるマルチコア光ファイバ用の多心光コネクタ及びその製造方法を提供することができる。
　本発明に係る光コネクタによれば、マルチコア光ファイバを回転調心することなく、多心のマルチコア光ファイバ同士を接続できる。マルチコア光ファイバ用多心光コネクタの製造が容易になる。 The present invention can provide a multi-core optical connector for multi-core optical fibers that does not require rotational alignment of the multi-core optical fibers, and a method for manufacturing the same.
According to the optical connector according to the present invention, multi-core optical fibers can be connected to each other without rotationally aligning the multi-core optical fibers. It becomes easier to manufacture a multi-core optical connector for multi-core optical fibers.
本発明に係る光コネクタを説明する図である。FIG. 1 is a diagram illustrating an optical connector according to the present invention. 本発明に係る光コネクタが備える光導波路ブロックを説明する図である。FIG. 3 is a diagram illustrating an optical waveguide block included in the optical connector according to the present invention. 本発明に係る光コネクタの実施の形態の第一例におけるＭＴフェルールの接続端面の模式図である。FIG. 2 is a schematic diagram of a connection end surface of an MT ferrule in a first example of an embodiment of an optical connector according to the present invention. 本発明に係る光コネクタの実施の形態の第一例における光導波路のＭＴフェルールとの接続端面の模式図である。FIG. 2 is a schematic diagram of a connection end surface of an optical waveguide with an MT ferrule in a first example of an embodiment of an optical connector according to the present invention. 本発明に係る光コネクタの実施の形態の第一例における光導波路と接着固定で接続するマルチコア光ファイバの接続端面の模式図である。FIG. 2 is a schematic diagram of a connection end surface of a multi-core optical fiber that is adhesively and fixedly connected to an optical waveguide in a first example of an embodiment of an optical connector according to the present invention. 本発明に係る光コネクタの実施の形態の第一例におけるマルチコア光ファイバと接着固定で接続する光導波路の接続端面の模式図である。FIG. 2 is a schematic diagram of a connection end surface of an optical waveguide that is adhesively and fixedly connected to a multi-core optical fiber in a first example of an embodiment of an optical connector according to the present invention. 本発明に係る光コネクタの製造方法を説明する図である。It is a figure explaining the manufacturing method of the optical connector concerning the present invention. 本発明に係る光コネクタの実施の形態の第二例を示す概略図である。It is a schematic diagram showing a second example of an embodiment of an optical connector concerning the present invention. 本発明に係る光コネクタの実施の形態の第二例における左側プラグのマルチコア光ファイバ端面の模式図である。It is a schematic diagram of the multi-core optical fiber end surface of the left side plug in the second example of the embodiment of the optical connector according to the present invention. 本発明に係る光コネクタの実施の形態の第二例における左側プラグのマルチコア光ファイバと接着固定した光導波路の接続端面の模式図である。FIG. 7 is a schematic diagram of a connection end surface of an optical waveguide adhesively fixed to a multi-core optical fiber of a left plug in a second example of an embodiment of an optical connector according to the present invention. 本発明に係る光コネクタの実施の形態の第二例における左側プラグのマルチコア光ファイバと接着固定していない側の光導波路の接続端面の模式図である。FIG. 7 is a schematic diagram of the connection end surface of the optical waveguide on the side that is not adhesively fixed to the multi-core optical fiber of the left plug in the second example of the embodiment of the optical connector according to the present invention. 本発明に係る光コネクタの実施の形態の第二例における右側プラグのマルチコア光ファイバと接着固定していない側の光導波路の接続端面の模式図である。FIG. 7 is a schematic view of the connection end surface of the optical waveguide on the side that is not adhesively fixed to the multi-core optical fiber of the right plug in the second example of the embodiment of the optical connector according to the present invention.
　添付の図面を参照して本発明の実施形態を説明する。以下に説明する実施形態は本発明の実施例であり、本発明は、以下の実施形態に制限されるものではない。なお、本明細書及び図面において符号が同じ構成要素は、相互に同一のものを示すものとする。 Embodiments of the present invention will be described with reference to the accompanying drawings. The embodiments described below are examples of the present invention, and the present invention is not limited to the following embodiments. Note that components with the same reference numerals in this specification and the drawings indicate the same components.
　本明細書では、一例として、４つのコアを有するマルチコア光ファイバが４本並列するテープファイバを接続する多心光コネクタについて説明する。 In this specification, as an example, a multi-core optical connector that connects tape fibers in which four multi-core optical fibers each having four cores are arranged in parallel will be described.
（実施形態１）
　図１は、本実施形態の光コネクタ３０１を説明する概略図である。光コネクタ３０１は、複数のマルチコア光ファイバが含まれる多心ファイバ同士（５０ａ、５０ｂ）を接続する光コネクタであって、
　２つの多心ファイバの端部（５１ａ、５１ｂ）が両側の接続面（１１ａ、１１ｂ）にそれぞれ接続される光導波路ブロック１００を備える。 (Embodiment 1)
FIG. 1 is a schematic diagram illustrating an optical connector 301 of this embodiment. The optical connector 301 is an optical connector that connects multi-core fibers (50a, 50b) including a plurality of multi-core optical fibers,
An optical waveguide block 100 is provided in which the ends (51a, 51b) of two multicore fibers are respectively connected to connection surfaces (11a, 11b) on both sides.
　図２は、光導波路ブロック１００を説明する図である。光導波路ブロック１００は、
　それぞれの接続面（１１ａ、１１ｂ）に、接続しようとする多心ファイバの端部（５１ａ、５１ｂ）に現れているマルチコア光ファイバのコア５５が当たる位置に光入出力端１２が形成されていること、及び
　一方の接続面１１ａから他方の接続面１１ｂへ、対応する光入出力端１２同士を結ぶ光導波路１３が形成されていること
を特徴とする。 FIG. 2 is a diagram illustrating the optical waveguide block 100. The optical waveguide block 100 is
An optical input/output end 12 is formed on each connection surface (11a, 11b) at a position where the core 55 of the multicore optical fiber appearing at the end (51a, 51b) of the multicore fiber to be connected comes into contact. It is also characterized in that an optical waveguide 13 connecting the corresponding optical input/output ends 12 is formed from one connection surface 11a to the other connection surface 11b.
　本実施形態の場合、光導波路ブロック１００は、
　接続面１１ａにおいて、マルチコア光ファイバの各コアと光入出力端１２とがそれぞれ接続するように、一方の多心ファイバ５０ａが接着固定されていること、及び
　接続面１１ｂにおいて、前記端部がＭＴフェルール２００である多心ファイバ５０ｂが着脱可能に接続されるように、且つ多心ファイバ５０ｂを接続した時に前記マルチコア光ファイバの各コアと光入出力端１２とがそれぞれ接続するように、ＭＴフェルール２００のガイドピン挿入孔２２に嵌合するガイドピン２１を有していること
を特徴とする。 In the case of this embodiment, the optical waveguide block 100 is
On the connection surface 11a, one multi-core fiber 50a is adhesively fixed so that each core of the multi-core optical fiber is connected to the optical input/output end 12, and on the connection surface 11b, the end portion is MT. The MT ferrule is arranged so that the multi-core fiber 50b, which is the ferrule 200, is removably connected, and so that each core of the multi-core optical fiber and the optical input/output end 12 are connected to each other when the multi-core fiber 50b is connected. It is characterized by having a guide pin 21 that fits into a guide pin insertion hole 22 of 200.
　マルチコア光ファイバ用の多心光コネクタ３０１は、テープ化された４本のマルチコア光ファイバが接着固定されたＭＴフェルール２００と、ＭＴフェルール２００との接続側の反対側にある接続面１１ａに４本のマルチコア光ファイバが接着固定された光導波路ブロック１００をプラグ部材１５５に内蔵したプラグ１５０で構成されている。 A multi-core optical connector 301 for multi-core optical fibers includes an MT ferrule 200 to which four tape-shaped multi-core optical fibers are adhesively fixed, and four fibers on a connection surface 11a on the opposite side of the connection side to the MT ferrule 200. The plug 150 includes an optical waveguide block 100 to which multi-core optical fibers are adhesively fixed and built into a plug member 155.
　図３は、ＭＴフェルール２００のプラグ１５０側の端面を説明する図である。当該端面には、多心ファイバ５０ｂのマルチコア光ファイバ端部５１ｂが現れている。４本の各マルチコア光ファイバのコア５５の位置は調心されていない状態である。マルチコア光ファイバ端部５１は研磨されている。また、当該端面にはプラグ１５０のガイドピン２１が嵌合するガイドピン孔２２が形成されている。 FIG. 3 is a diagram illustrating the end surface of the MT ferrule 200 on the plug 150 side. A multi-core optical fiber end portion 51b of the multi-core fiber 50b appears on the end face. The positions of the cores 55 of each of the four multi-core optical fibers are not aligned. The multi-core optical fiber end 51 is polished. Further, a guide pin hole 22 into which the guide pin 21 of the plug 150 fits is formed in the end surface.
　図４は、プラグ１５０のＭＴフェルール２００との接続側の端面を説明する図である。プラグ１５０は、光導波路ブロック１００、平板基板１２０、ガイドピン２１、及びプラグ部材１５５を備える。光導波路ブロック１００にはＶ溝１０１が形成されており、このＶ溝１０１にガイドピン２１が配置されて平板基板１２０で蓋をされる構成である。そして、平板基板１２０で蓋をされた光導波路ブロック１００がプラグ部材１５５に収められてプラグ１５０となる。光導波路ブロック１００の接続端１１ｂには、図３で説明したマルチコア光ファイバ端部５１ｂのコア５５の配置を転写した位置に光導波路１３の光入出力端１２が形成される。このため、図３で説明した端面と図４の端面とを重ねるとマルチコア光ファイバ端部５１ｂのコア５５の位置と光導波路１３の光入出力端１２の位置とが一致する。 FIG. 4 is a diagram illustrating the end surface of the plug 150 on the connection side with the MT ferrule 200. The plug 150 includes an optical waveguide block 100, a flat substrate 120, a guide pin 21, and a plug member 155. A V-groove 101 is formed in the optical waveguide block 100, a guide pin 21 is arranged in the V-groove 101, and the structure is covered with a flat substrate 120. The optical waveguide block 100 covered with the flat substrate 120 is then housed in the plug member 155 to form the plug 150. At the connection end 11b of the optical waveguide block 100, the optical input/output end 12 of the optical waveguide 13 is formed at a position where the arrangement of the core 55 of the multi-core optical fiber end portion 51b explained in FIG. 3 is transferred. Therefore, when the end face described in FIG. 3 and the end face in FIG. 4 are overlapped, the position of the core 55 of the multi-core optical fiber end portion 51b and the position of the optical input/output end 12 of the optical waveguide 13 match.
　従って、光導波路ブロック１００の接続面１１ｂにＭＴフェルール２００を接続することで、多心ファイバ５０ｂの各マルチコア光ファイバを回転調心させることなく、光導波路ブロック１００の各導波路１３に多心ファイバ５０ｂのマルチコア光ファイバの各コアを接続できる。 Therefore, by connecting the MT ferrule 200 to the connection surface 11b of the optical waveguide block 100, the multicore fibers can be connected to each waveguide 13 of the optical waveguide block 100 without rotationally aligning each multicore optical fiber of the multicore fiber 50b. Each core of a 50b multi-core optical fiber can be connected.
　図５は、光導波路ブロック１００の接続面１１ａに多心ファイバ５０ａを接着固定させる部材１６０を説明する図である。図５は部材１６０の光導波路ブロック１００側の端面である。多心ファイバ５０ａのマルチコア光ファイバはＶ溝基板１６１のＶ溝１６５に置かれ、上から蓋基板１６２を載せて接着剤で固定する。この構成により部材１６０とマルチコア光ファイバは一体化しており、各マルチコア光ファイバのコア５５の位置は調心されていない。マルチコア光ファイバ端部５１ａは研磨されている。 FIG. 5 is a diagram illustrating a member 160 for adhesively fixing the multi-core fiber 50a to the connection surface 11a of the optical waveguide block 100. FIG. 5 shows an end surface of the member 160 on the optical waveguide block 100 side. The multi-core optical fiber of the multi-core fiber 50a is placed in the V-groove 165 of the V-groove substrate 161, and the lid substrate 162 is placed on top and fixed with adhesive. With this configuration, the member 160 and the multi-core optical fiber are integrated, and the position of the core 55 of each multi-core optical fiber is not aligned. The multi-core optical fiber end 51a is polished.
　図６は、プラグ１５０の部材１６０との接着固定側の端面を説明する図である。光導波路ブロック１００の接続面１１ａには、図５で説明したマルチコア光ファイバ端部５１ａのコア５５の配置を転写した位置に光導波路１３の光入出力端１２が形成される。このため、図５で説明した端面と図６の端面とを重ねるとマルチコア光ファイバ端部５１ａのコア５５の位置と光導波路１３の光入出力端１２の位置とが一致する。 FIG. 6 is a diagram illustrating the end surface of the plug 150 on the side that is adhesively fixed to the member 160. On the connection surface 11a of the optical waveguide block 100, the optical input/output end 12 of the optical waveguide 13 is formed at a position where the arrangement of the core 55 of the multi-core optical fiber end portion 51a described in FIG. 5 is transferred. Therefore, when the end face described in FIG. 5 and the end face in FIG. 6 are overlapped, the position of the core 55 of the multi-core optical fiber end portion 51a and the position of the optical input/output end 12 of the optical waveguide 13 match.
　従って、光導波路ブロック１００の接続面１１ａに部材１６０を突き当てることで、多心ファイバ５０ａの各マルチコア光ファイバを回転調心させることなく、光導波路ブロック１００の各導波路１３に多心ファイバ５０ａのマルチコア光ファイバの各コアを接続できる。 Therefore, by abutting the member 160 against the connection surface 11a of the optical waveguide block 100, the multi-core optical fiber 50a can be connected to each waveguide 13 of the optical waveguide block 100 without rotationally aligning each multi-core optical fiber of the multi-core optical fiber 50a. Each core of a multi-core optical fiber can be connected.
　図７は、光コネクタ３０１を製造する製造方法を説明する図である。当該製造方法は、
　２つの多心ファイバ（５０ａ、５０ｂ）の端部（５１ａ、５１ｂ）が両端の接続面（１１ａ、１１ｂ）にそれぞれ接続される光導波路ブロック１００を作製するときに、
　光導波路ブロック１００のそれぞれの接続面（１１ａ、１１ｂ）において、接続しようとする多心ファイバ（５０ａ、５０ｂ）の端部（５１ａ、５１ｂ）に現れている前記マルチコア光ファイバのコアが当たる位置を光入出力端１２とすること（ステップＳ０１）、及び
　接続面１１ａから接続面１１ｂへ、対応する光入出力端１２同士を結ぶ光導波路１３を形成すること（ステップＳ０２）
を特徴とする。 FIG. 7 is a diagram illustrating a manufacturing method for manufacturing the optical connector 301. The manufacturing method is
When producing an optical waveguide block 100 in which the ends (51a, 51b) of two multicore fibers (50a, 50b) are respectively connected to the connection surfaces (11a, 11b) at both ends,
On each connection surface (11a, 11b) of the optical waveguide block 100, determine the position where the core of the multicore optical fiber appearing at the end (51a, 51b) of the multicore fiber (50a, 50b) to be connected hits. forming optical input/output ends 12 (step S01); and forming an optical waveguide 13 connecting the corresponding optical input/output ends 12 from the connection surface 11a to the connection surface 11b (step S02).
It is characterized by
　光導波路ブロック１００は、集光させたレーザ光をガラス部材の内部に照射してコア（光導波路１３）を形成する方法で作製される。当該方法は、ガラス部材内でのレーザ光の集光位置を動かすことでガラス部材内でのコアのルートを平面だけでなく立体的に形成できる。このため、図２で示したように、ガラス部材の両端面において所望の位置に光入出力端１２を配置するように光導波路１３を形成できる。 The optical waveguide block 100 is manufactured by a method of irradiating the inside of a glass member with a focused laser beam to form a core (optical waveguide 13). In this method, by moving the focusing position of the laser beam within the glass member, the route of the core within the glass member can be formed not only in a plane but also in three dimensions. Therefore, as shown in FIG. 2, the optical waveguide 13 can be formed such that the optical input/output ends 12 are arranged at desired positions on both end faces of the glass member.
　具体的には、ステップＳ０１にて、図３と図５に示した端面におけるマルチコア光ファイバのコア５５の位置を画像で取得し、その位置を座標で数値化する。ガラス部材の端面（光導波路ブロック１００の接続面１１ａと１１ｂ）上に当該座標をあてはめ、光導波路１３の始点と終点（光入出力端１２）とする。そして、ステップＳ０２にて、レーザ光の集光位置を当該始点から終点へ動かすことで光導波路１３を描画する。 Specifically, in step S01, the position of the core 55 of the multi-core optical fiber on the end face shown in FIGS. 3 and 5 is acquired as an image, and the position is digitized using coordinates. The coordinates are applied to the end surfaces of the glass member (the connection surfaces 11a and 11b of the optical waveguide block 100), and are defined as the starting point and the ending point (light input/output end 12) of the optical waveguide 13. Then, in step S02, the optical waveguide 13 is drawn by moving the condensing position of the laser beam from the starting point to the ending point.
　図４と図６に示したように、光導波路ブロック１００と平板基板１２０はプラグ部材１５５に接着固定されている。光導波路ブロック１００にはガイドピン２１を設置するための２本のＶ溝１０１がある。Ｖ溝１０１に蓋をするように光導波路ブロック１００と平板基板１２０を重ねた状態でＶ溝１０１にガイドピン２１が接着固定されている。ガイドピン２１は、ＭＴコネクタで使用されるガイドピンを採用する。 As shown in FIGS. 4 and 6, the optical waveguide block 100 and the flat substrate 120 are adhesively fixed to the plug member 155. The optical waveguide block 100 has two V-grooves 101 in which guide pins 21 are installed. A guide pin 21 is adhesively fixed to the V-groove 101 with the optical waveguide block 100 and the flat substrate 120 stacked so as to cover the V-groove 101. The guide pin 21 employs a guide pin used in an MT connector.
　光導波路ブロック１００は、接続面１１ｂにおいて、ＭＴフェルール２００に固定されたマルチコア光ファイバのコア５５と接続する４個単位のコア５５の中心（対角線２本の交点）がガイドピン２１の断面中心を結んだ仮想的な線上に位置するようにＶ溝１０１の深さが設計され、切削加工されている。 In the optical waveguide block 100, the center (intersection of two diagonal lines) of the four cores 55 connected to the core 55 of the multi-core optical fiber fixed to the MT ferrule 200 is aligned with the cross-sectional center of the guide pin 21 on the connection surface 11b. The depth of the V-groove 101 is designed and cut so that it is located on the connected imaginary line.
　多心ファイバ５１ｂの４本のマルチコア光ファイバは、ＭＴフェルール２００の光ファイバ挿入孔に接着固定されて、端部５１ｂは研磨加工されている。ＭＴフェルール２００の接続端面では、ガイドピン孔２２の中心を結んだ仮想的な線上に光ファイバ挿入孔が位置するように設計されている。光導波路ブロック１００に固定されたガイドピン２１をＭＴフェルール２００のガイドピン孔２２に挿入することで、光導波路ブロック１００の光導波路１３の各光入出力端１２とＭＴフェルール２００に固定されているマルチコア光ファイバの各コアとが調心された状態で接続できる。ガイドピン２１とガイドピン孔２２を嵌合させた後で、ＭＴコネクタで使用されているクランプスプリングで嵌合状態を維持する。 The four multicore optical fibers of the multicore fiber 51b are adhesively fixed to the optical fiber insertion holes of the MT ferrule 200, and the ends 51b are polished. The connection end surface of the MT ferrule 200 is designed so that the optical fiber insertion hole is located on an imaginary line connecting the centers of the guide pin holes 22. By inserting the guide pin 21 fixed to the optical waveguide block 100 into the guide pin hole 22 of the MT ferrule 200, it is fixed to each optical input/output end 12 of the optical waveguide 13 of the optical waveguide block 100 and the MT ferrule 200. Each core of a multi-core optical fiber can be connected in an aligned state. After the guide pin 21 and the guide pin hole 22 are fitted, the fitted state is maintained by a clamp spring used in the MT connector.
　光導波路ブロック１００の接続面１１ａと、部材１６０の端面は、斜め８度に研磨され、光ファイバの接続におけるフレネル反射を抑制する。光導波路ブロック１００と部材１６０とは、マルチコア光ファイバのコアに光を導通させた状態で調心するアクティブアライメントで位置合わせを行い、接着固定している。 The connection surface 11a of the optical waveguide block 100 and the end surface of the member 160 are polished at an angle of 8 degrees to suppress Fresnel reflection in the connection of optical fibers. The optical waveguide block 100 and the member 160 are aligned by active alignment in a state where light is conducted to the core of the multi-core optical fiber, and are fixed by adhesive.
　一方、ＭＴフェルール２００の端面と光導波路ブロック１００の接続面１１ｂは直角研磨されてもよい。両者の間にはマルチコア光ファイバのコア５５及び光導波路１３と屈折率を整合させた屈折率整合材を充填し、コア５５及び光導波路１３と空気との屈折率の違いにより発生するフレネル反射を抑えて、高い反射減衰量を実現する。なお、ＭＴフェルール２００の端面と光導波路ブロック１００の接続面１１ｂを斜め８度に研磨してもよい。屈折率整合材を使用しなくても、高い反射減衰量を得ることができる。 On the other hand, the end surface of the MT ferrule 200 and the connection surface 11b of the optical waveguide block 100 may be polished at right angles. A refractive index matching material whose refractive index is matched to that of the core 55 and the optical waveguide 13 of the multi-core optical fiber is filled between the two to eliminate Fresnel reflection caused by the difference in refractive index between the core 55 and the optical waveguide 13 and air. to achieve high return loss. Note that the end surface of the MT ferrule 200 and the connecting surface 11b of the optical waveguide block 100 may be polished at an angle of 8 degrees. A high return loss can be obtained without using a refractive index matching material.
　また、ＭＴフェルールをプラグハウジングに内蔵して、アダプタ内でプラグハウジング同士をガイドピンとガイドピン孔を嵌合させるＭＰＯコネクタの形態としても、本発明を実施できる。光導波路側をＭＰＯコネクタのプラグハウジングに内蔵することで、プラグハウジングの操作のみで、光ファイバと光導波路を着脱できる。 The present invention can also be implemented as an MPO connector in which the MT ferrule is built into the plug housing and the guide pins and guide pin holes of the plug housings are fitted together within the adapter. By incorporating the optical waveguide side into the plug housing of the MPO connector, the optical fiber and optical waveguide can be attached and detached simply by operating the plug housing.
（実施形態２）
　図８は、本実施形態の光コネクタ３０２を説明する概略図である。光コネクタ３０２は、ＭＴフェルールではなく、多心光コネクタのプラグ同士が接続する構造である。
　図２の光導波路ブロック１００に対し、光コネクタ３０２の光導波路ブロックは、接続面１１ａを有する雄ブロック１００ａと接続面１１ｂを有する雌ブロック１００ｂに分割可能であり、雄ブロック１００ａのガイドピン２１が雌ブロック１００ｂのガイドピン挿入孔２２（図８では見えない位置に存在する）に嵌合することで合体する構造である。 (Embodiment 2)
FIG. 8 is a schematic diagram illustrating the optical connector 302 of this embodiment. The optical connector 302 has a structure in which plugs of multi-core optical connectors are connected to each other instead of MT ferrules.
In contrast to the optical waveguide block 100 in FIG. 2, the optical waveguide block of the optical connector 302 can be divided into a male block 100a having a connection surface 11a and a female block 100b having a connection surface 11b. It has a structure that is assembled by fitting into the guide pin insertion hole 22 (present at a position not visible in FIG. 8) of the female block 100b.
　プラグ１５０ｂは、雌ブロック１００ｂを備え、一端側（雌ブロック１００ｂの接続面１１ｂ側）において、部材１６０ｂと接着固定される。つまり、雌ブロック１００ｂは、接続面１１ｂにおいて、マルチコア光ファイバの各コア５５と光入出力端１２とがそれぞれ接続するように、多心ファイバ５１ｂが接着固定されている。 The plug 150b includes a female block 100b, and is adhesively fixed to a member 160b at one end side (the connection surface 11b side of the female block 100b). That is, in the female block 100b, the multicore fibers 51b are adhesively fixed so that each core 55 of the multicore optical fiber and the optical input/output end 12 are connected to each other on the connection surface 11b.
　図９は、雌ブロック１００ｂの接続面１１ｂに多心ファイバ５０ｂを接着固定させる部材１６０ｂを説明する図である。図９は部材１６０ｂの雌ブロック１００ｂ側の端面である。多心ファイバ５０ｂのマルチコア光ファイバはＶ溝基板１６１のＶ溝１６５に置かれ、上から蓋基板１６２を載せて接着剤で固定する。この構成により部材１６０ｂとマルチコア光ファイバは一体化しており、各マルチコア光ファイバのコア５５の位置は調心されていない。マルチコア光ファイバ端部５１ｂは研磨されている。 FIG. 9 is a diagram illustrating a member 160b for adhesively fixing the multi-core fiber 50b to the connection surface 11b of the female block 100b. FIG. 9 shows an end surface of the member 160b on the female block 100b side. The multi-core optical fiber of the multi-core fiber 50b is placed in the V-groove 165 of the V-groove substrate 161, and the lid substrate 162 is placed on top and fixed with adhesive. With this configuration, the member 160b and the multi-core optical fiber are integrated, and the position of the core 55 of each multi-core optical fiber is not aligned. The multi-core optical fiber end 51b is polished.
　図１０は、プラグ１５０ｂの部材１６０ｂとの接着固定側の端面を説明する図である。雌ブロック１００ｂの接続面１１ｂには、図９で説明したマルチコア光ファイバ端部５１ｂのコア５５の配置を転写した位置に光導波路１３の光入出力端１２が形成される。このため、図９で説明した端面と図１０の端面とを重ねるとマルチコア光ファイバ端部５１ｂのコア５５の位置と光導波路１３の光入出力端１２の位置とが一致する。 FIG. 10 is a diagram illustrating the end surface of the plug 150b on the side that is adhesively fixed to the member 160b. On the connection surface 11b of the female block 100b, the optical input/output end 12 of the optical waveguide 13 is formed at a position where the arrangement of the core 55 of the multi-core optical fiber end portion 51b described in FIG. 9 is transferred. Therefore, when the end face described in FIG. 9 and the end face in FIG. 10 are overlapped, the position of the core 55 of the multi-core optical fiber end portion 51b and the position of the optical input/output end 12 of the optical waveguide 13 match.
　従って、雌ブロック１００ｂの接続面１１ｂに部材１６０ｂを突き当てることで、多心ファイバ５０ｂの各マルチコア光ファイバを回転調心させることなく、雌ブロック１００ｂの各導波路１３に多心ファイバ５０ｂのマルチコア光ファイバの各コアを接続できる。 Therefore, by abutting the member 160b against the connection surface 11b of the female block 100b, the multi-core optical fibers of the multi-core fiber 50b can be connected to each waveguide 13 of the female block 100b without rotationally aligning each multi-core optical fiber of the multi-core optical fiber 50b. Each core of optical fiber can be connected.
　図１１は、雌ブロック１００ｂの部材１６０ｂと接着固定していない側の合体面１５ｂを説明する図である。合体面１５ｂにおいて光導波路１３の入出力端１２は予め定められた位置に配置される。つまり、雌ブロック１００ｂの接続面１１ｂの入出力端１２は、接着固定されるマルチコア光ファイバの各コア５５の位置にあることに対し、合体面１５ｂの入出力端１２は、予め定められた位置にあるという違いがある。 FIG. 11 is a diagram illustrating the combined surface 15b of the female block 100b on the side that is not adhesively fixed to the member 160b. The input/output end 12 of the optical waveguide 13 is arranged at a predetermined position on the combining surface 15b. In other words, the input/output ends 12 of the connecting surface 11b of the female block 100b are located at the positions of each core 55 of the multi-core optical fiber to be adhesively fixed, whereas the input/output ends 12 of the joining surface 15b are located at predetermined positions. There is a difference in that.
　雄ブロック１００ａは、接続面１１ａにおいて、前記マルチコア光ファイバの各コア５５と光入出力端１２とがそれぞれ接続するように、多心ファイバ５０ａが接着固定されている。
　図１２は、雄ブロック１００ａの部材１６０ａと接着固定していない側の合体面１５ａを説明する図である。合体面１５ａにも光導波路１３の入出力端１２が予め定められた位置に配置される。また、光導波路ブロック１００ａにはＶ溝１０１が形成されており、このＶ溝１０１にガイドピン２１が配置されて平板基板１２０で蓋をされる構成である。そして、平板基板１２０で蓋をされた光導波路ブロック１００ａがプラグ部材１５５に収められてプラグ１５０ａとなる。 In the male block 100a, the multicore fibers 50a are adhesively fixed on the connection surface 11a so that each core 55 of the multicore optical fiber and the optical input/output end 12 are connected to each other.
FIG. 12 is a diagram illustrating the joining surface 15a of the male block 100a on the side that is not adhesively fixed to the member 160a. The input/output end 12 of the optical waveguide 13 is also arranged at a predetermined position on the combining surface 15a. Further, a V-groove 101 is formed in the optical waveguide block 100a, a guide pin 21 is arranged in this V-groove 101, and the structure is covered with a flat substrate 120. The optical waveguide block 100a covered with the flat substrate 120 is then housed in the plug member 155 to form a plug 150a.
　部材１６０ａは、図５で説明した部材１６０と同じである。
　雄ブロック１００ａの部材１６０ａの接着固定側の端面は図６で説明した端面と同じである。 Member 160a is the same as member 160 described in FIG.
The adhesively fixed end face of the member 160a of the male block 100a is the same as the end face described in FIG. 6.
　光コネクタ３０２は、雄ブロック１００ａと雌ブロック１００ｂとが合体する合体面（１５ａ、１５ｂ）に現れる光導波路１３の位置が、それぞれが予め定められた位置であるため、マルチコア光ファイバの回転ずれによらず、多心ファイバ（５０ａ、５０ｂ）のマルチコア光ファイバ同士を接続することができる。なお、合体面（１５ａ、１５ｂ）において屈折率整合剤を付着させることで、端面間でのフレネル反射を抑制する。 In the optical connector 302, the positions of the optical waveguides 13 that appear on the joining surface (15a, 15b) where the male block 100a and the female block 100b are joined are at predetermined positions, so that the optical connector 302 is free from rotational deviation of the multi-core optical fiber. The multi-core optical fibers of the multi-core fibers (50a, 50b) can be connected to each other regardless of the configuration. Note that Fresnel reflection between the end faces is suppressed by depositing a refractive index matching agent on the combined surfaces (15a, 15b).
　雄ブロック１００ａと雌ブロック１００ｂは、それぞれを図７で説明した製造方法で作成してもよい。また、雄ブロック１００ａと雌ブロック１００ｂは、図７で説明した製造方法で作成した光導波路ブロック１００を接続面１１ａと接続面１１ｂに平行な面で切断して作成してもよい。この場合、切断面が合体面（１５ａ、１５ｂ）となる。 The male block 100a and the female block 100b may be manufactured using the manufacturing method described with reference to FIG. 7, respectively. Moreover, the male block 100a and the female block 100b may be created by cutting the optical waveguide block 100 created by the manufacturing method described in FIG. 7 along a plane parallel to the connection surface 11a and the connection surface 11b. In this case, the cut surface becomes the combined surface (15a, 15b).
（他の実施形態）
　実施形態１と２では、４つのコアを有するマルチコア光ファイバ４心用の光コネクタを説明したが、本発明の構成は、４つのコアを有するマルチコア光ファイバに限らず、４つ以外のコアをもつマルチコア光ファイバにも適用できる。本数についても２本や８本以上でも適用できる。 (Other embodiments)
In Embodiments 1 and 2, an optical connector for a four-core multi-core optical fiber having four cores has been described, but the configuration of the present invention is not limited to a multi-core optical fiber having four cores, but is applicable to a multi-core optical fiber having four cores. It can also be applied to multi-core optical fibers. Regarding the number of pieces, it can be applied to 2 pieces or 8 pieces or more.
１１ａ、１１ｂ：接続面
１２：光入出力端
１３：光導波路
１５ａ、１５ｂ：合体面
２１：ガイドピン
２２：ガイドピン孔
５０ａ、５０ｂ：多心ファイバ
５１ａ、５１ｂ：多心ファイバの端部
５５：コア
１００：光導波路ブロック
１００ａ：雄ブロック
１００ｂ：雌ブロック
１０１：Ｖ溝
１２０：平板基板
１５０：プラグ
１５５：プラグ部材
１６０、１６０ａ、１６０ｂ：部材
１６１：Ｖ溝基板
１６２：蓋基板
１６５：Ｖ溝
２００：ＭＴフェルール
３０１、３０２：光コネクタ 11a, 11b: Connection surface 12: Optical input/output end 13: Optical waveguides 15a, 15b: Combining surface 21: Guide pin 22: Guide pin hole 50a, 50b: Multicore fiber 51a, 51b: Multicore fiber end 55: Core 100: Optical waveguide block 100a: Male block 100b: Female block 101: V groove 120: Flat substrate 150: Plug 155: Plug members 160, 160a, 160b: Member 161: V groove substrate 162: Lid substrate 165: V groove 200 :MT ferrule 301, 302: Optical connector

Claims (4)

  1. 　複数のマルチコア光ファイバが含まれる多心ファイバ同士を接続する光コネクタであって、
    　２つの前記多心ファイバの端部が両側の接続面にそれぞれ接続される光導波路ブロックを備えており、
    　前記光導波路ブロックは、
    　それぞれの前記接続面に、接続しようとする前記多心ファイバの端部に現れている前記マルチコア光ファイバのコアが当たる位置に光入出力端が形成されていること、及び
    　一方の前記接続面から他方の前記接続面へ、対応する前記光入出力端同士を結ぶ光導波路が形成されていること
    を特徴とする光コネクタ。     An optical connector that connects multi-core fibers including multiple multi-core optical fibers,
    comprising an optical waveguide block in which the ends of the two multicore fibers are respectively connected to connection surfaces on both sides;
    The optical waveguide block is
    An optical input/output end is formed on each of the connection surfaces at a position where the core of the multi-core optical fiber appearing at the end of the multi-core fiber to be connected comes into contact, and from one of the connection surfaces. An optical connector characterized in that an optical waveguide is formed on the other connection surface to connect the corresponding optical input/output ends.
  2. 　前記光導波路ブロックは、
    　一方の前記接続面において、前記マルチコア光ファイバの各コアと前記光入出力端とがそれぞれ接続するように、一方の前記多心ファイバが接着固定されていること、及び
    　他方の前記接続面において、前記端部がＭＴフェルールである他方の前記多心ファイバが着脱可能に接続されるように、且つ他方の前記多心ファイバを接続した時に前記マルチコア光ファイバの各コアと前記光入出力端とがそれぞれ接続するように、前記ＭＴフェルールのガイドピン挿入孔に嵌合するガイドピンを有していること
    を特徴とする請求項１に記載の光コネクタ。     The optical waveguide block is
    On one of the connection surfaces, one of the multi-core fibers is adhesively fixed so that each core of the multi-core optical fiber is connected to the optical input/output end, and on the other connection surface, The other multi-core fiber whose end portion is an MT ferrule is removably connected, and each core of the multi-core optical fiber and the optical input/output end are connected when the other multi-core fiber is connected. The optical connector according to claim 1, further comprising a guide pin that fits into a guide pin insertion hole of the MT ferrule so as to connect each other.
  3. 　前記光導波路ブロックは、
    　一方の前記接続面を有する雄ブロックと他方の前記接続面を有する雌ブロックに分割可能であり、前記雄ブロックのガイドピンが前記雌ブロックのガイドピン挿入孔に嵌合することで合体する構造であること、
    　前記雄ブロックは、前記接続面において、前記マルチコア光ファイバの各コアと前記光入出力端とがそれぞれ接続するように、一方の前記多心ファイバが接着固定されていること、
    　前記雌ブロックは、前記接続面において、前記マルチコア光ファイバの各コアと前記光入出力端とがそれぞれ接続するように、他方の前記多心ファイバが接着固定されていること、及び
    　前記雌ブロックと前記雄ブロックが合体する合体面に現れる前記光導波路の位置は、それぞれが予め定められた位置であること
    を特徴とする請求項１に記載の光コネクタ。     The optical waveguide block is
    The structure is such that it can be divided into one male block having the connecting surface and the other female block having the connecting surface, and are combined by fitting the guide pin of the male block into the guide pin insertion hole of the female block. There is something
    In the male block, one of the multicore fibers is adhesively fixed on the connection surface so that each core of the multicore optical fiber and the optical input/output end are respectively connected;
    In the female block, the other multicore fiber is adhesively fixed to the connection surface so that each core of the multicore optical fiber and the optical input/output end are connected to each other, and 2. The optical connector according to claim 1, wherein the positions of the optical waveguides appearing on the joining surface where the male blocks are joined are predetermined positions.
  4. 　複数のマルチコア光ファイバが並列する多心ファイバを接続する光コネクタの製造方法であって、
    　２つの前記多心ファイバの端部が両端の接続面にそれぞれ接続される光導波路ブロックを作製するときに、
    　光導波路ブロックのそれぞれの前記接続面において、接続しようとする前記多心ファイバの端部に現れている前記マルチコア光ファイバのコアが当たる位置を光入出力端とすること、及び
    　一方の前記接続面から他方の前記接続面へ、対応する前記光入出力端同士を結ぶ光導波路を形成すること
    を特徴とする光コネクタ製造方法。     A method for manufacturing an optical connector for connecting multi-core fibers in which a plurality of multi-core optical fibers are arranged in parallel,
    When producing an optical waveguide block in which the ends of the two multicore fibers are respectively connected to the connection surfaces at both ends,
    On each of the connection surfaces of the optical waveguide block, a position where the core of the multi-core optical fiber appearing at the end of the multi-core fiber to be connected hits is an optical input/output end, and one of the connection surfaces A method for manufacturing an optical connector, comprising forming an optical waveguide connecting the corresponding optical input/output ends from the connecting surface to the other connecting surface.
PCT/JP2022/029531 2022-08-01 2022-08-01 Optical connector and manufacturing method WO2024028954A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2022/029531 WO2024028954A1 (en) 2022-08-01 2022-08-01 Optical connector and manufacturing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2022/029531 WO2024028954A1 (en) 2022-08-01 2022-08-01 Optical connector and manufacturing method

Publications (1)

Publication Number Publication Date
WO2024028954A1 true WO2024028954A1 (en) 2024-02-08

Family

ID=89848625

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2022/029531 WO2024028954A1 (en) 2022-08-01 2022-08-01 Optical connector and manufacturing method

Country Status (1)

Country Link
WO (1) WO2024028954A1 (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014178628A (en) * 2013-03-15 2014-09-25 Hitachi Ltd Fan-in/fan-out device for multiple core fiber connection, optical connection device, and optical connection method
US20140294350A1 (en) * 2013-03-28 2014-10-02 Ofs Fitel, Llc Apparatus For Alignment of A Multicore Fiber in A Multifiber Connector And Method of Using Same
JP2015145989A (en) * 2014-02-04 2015-08-13 住友電気工業株式会社 Multi-core fiber aligning method, connector manufacturing method, and ribbon fiber manufacturing method
WO2016031678A1 (en) * 2014-08-29 2016-03-03 古河電気工業株式会社 Multi-core connector, connector, and connector connection mechanism
JP2018194670A (en) * 2017-05-17 2018-12-06 コニカミノルタ株式会社 Optical element and optical connector
WO2019131441A1 (en) * 2017-12-27 2019-07-04 日本電信電話株式会社 Connection device, optical connector manufacturing device, connection method, and method for manufacturing optical connector
JP2019152804A (en) * 2018-03-05 2019-09-12 株式会社フジクラ Optical connector

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014178628A (en) * 2013-03-15 2014-09-25 Hitachi Ltd Fan-in/fan-out device for multiple core fiber connection, optical connection device, and optical connection method
US20140294350A1 (en) * 2013-03-28 2014-10-02 Ofs Fitel, Llc Apparatus For Alignment of A Multicore Fiber in A Multifiber Connector And Method of Using Same
JP2015145989A (en) * 2014-02-04 2015-08-13 住友電気工業株式会社 Multi-core fiber aligning method, connector manufacturing method, and ribbon fiber manufacturing method
WO2016031678A1 (en) * 2014-08-29 2016-03-03 古河電気工業株式会社 Multi-core connector, connector, and connector connection mechanism
JP2018194670A (en) * 2017-05-17 2018-12-06 コニカミノルタ株式会社 Optical element and optical connector
WO2019131441A1 (en) * 2017-12-27 2019-07-04 日本電信電話株式会社 Connection device, optical connector manufacturing device, connection method, and method for manufacturing optical connector
JP2019152804A (en) * 2018-03-05 2019-09-12 株式会社フジクラ Optical connector

Similar Documents

Publication Publication Date Title
US11125950B2 (en) Optical connector, and optical connector connection structure
EP2790046B1 (en) Junction structure for multicore optical fiber and method for manufacturing junction structure for multicore optical fiber
US10955622B2 (en) Connection device, optical connector manufacturing device, connection method, and method for manufacturing optical connector
US11105981B2 (en) Optical connectors and detachable optical connector assemblies for optical chips
JP5491440B2 (en) Fan-out parts for multi-core fiber
CN112305678B (en) Optical connector
WO2024028954A1 (en) Optical connector and manufacturing method
WO2022244039A1 (en) Optical connector and method for manufacturing same
JP7107194B2 (en) optical connection structure
WO2022269692A1 (en) Optical connector plug, optical connector, and optical waveguide production method
JP3517010B2 (en) Optical connector
JP2843338B2 (en) Optical waveguide / optical fiber connector
JPS62297809A (en) Optical waveguide type connection member for connecting bunch fiber and connector using same
CN218446077U (en) Non-contact multi-core optical fiber connector and connecting device
JP3298975B2 (en) Connection structure and connection method between optical coupler and optical fiber
WO2023175865A1 (en) Cylindrical multi-core ferrule and optical connector
US20230400637A1 (en) Method for constructing light transmission system, and on-site construction set
JP2005308918A (en) Optical connection structure and manufacturing method therefor, and optical device
WO2017094629A1 (en) Optical waveguide substrate and method for manufacturing same, optical connector system, and active optical cable
JP2002148486A (en) Multi-fiber optical connector
JP2019144510A (en) Optical connector, optical connection structure and method for manufacturing optical connector
JP2000310723A (en) Optical connector and its manufacture
JP2004177903A (en) Assembling method of optical connector plug for connecting photonic crystal fiber
JPH07318757A (en) Optical connector and its connecting method
JPH08160245A (en) Nonreflective termination part of optical fiber

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 22953943

Country of ref document: EP

Kind code of ref document: A1