JP2021148810A - Housing for optical wiring component, optical wiring component and electronic apparatus - Google Patents

Abstract

To provide a housing for an optical wiring component capable of preventing deterioration of transmission efficiency in accommodated optical wiring while being small-sized, an optical wiring component being small-sized with a lower loss, and an electronic apparatus capable of saving a space for accommodating an optical wiring component while having high reliability.SOLUTION: A housing for an optical wiring component is for accommodating optical wiring, has a tabular shape, and includes: a bottom part having a bottom face; and a wall part projecting from the bottom face and having a frame-like shape when the bottom face is seen in planar view. The wall part includes a groove opening inside the wall part, extending in a direction including an element parallel to the bottom face, and designed to have the optical wiring inserted therein.SELECTED DRAWING: Figure 2

Description

The present invention relates to a housing for an optical wiring component, an optical wiring component, and an electronic device.

Patent Document 1 discloses an optical connector plug attached to a branch cable branched from a wire optical cable and an optical connector plug attached to an optical fiber routed from an optical terminal device. An optical terminal box in which an optical connector plug on the optical line optical cable side and an optical connector plug on the optical terminal device side are connected is disclosed inside the box body.

Further, the box body described in Patent Document 1 has a rectangular parallelepiped shape. Then, a sealing introduction metal fitting is attached so as to penetrate the box body. The branch cable and the optical fiber are introduced into the inside of the box body via the sealing introduction metal fittings, respectively. Further, in Patent Document 1, the extra length of the branch cable introduced inside the box body is wound.

Japanese Unexamined Patent Publication No. 10-90524

In order to reduce the size of the optical terminal box described in Patent Document 1, it is necessary to reduce the size of the box body. In that case, when the extra length of the branch cable is wound inside the box body, it is necessary to reduce the diameter of the winding body, that is, the diameter of the ring formed by the branch cable. However, in order to reduce the diameter of the ring, it is necessary to bend the branch cable with a smaller radius of curvature, which causes a large stress on the branch cable. Then, for example, at a branch point of the branch cable or a connection point of a plurality of cables, there is a problem that the transmission efficiency of the branch cable is lowered.

An object of the present invention is to house a housing for an optical wiring component which is small and can suppress a decrease in transmission efficiency in the accommodated optical wiring, an optical wiring component which is small and has little loss, and an optical wiring component. The purpose is to provide electronic devices that can save space and have high reliability.

Such an object is achieved by the present invention of the following (1) to (11).
(1) A housing for optical wiring components that accommodates optical wiring.
A plate-shaped bottom with a bottom and
A wall portion that is provided so as to project from the bottom surface and has a frame shape when the bottom surface is viewed in a plane.
With
A housing for an optical wiring component, wherein the wall portion opens inside the wall portion, extends in a direction including a component parallel to the bottom surface, and has a groove into which the optical wiring is inserted. body.

(2) The cross-sectional shape of the optical wiring has an anisotropic shape having a short axis and a long axis longer than the short axis.
The housing for an optical wiring component according to (1), wherein the length of the groove in the direction orthogonal to the bottom surface is shorter than the length of the long axis.

(3) The wall portion has the first mounting portion to which an adapter to which one end of the optical wiring is connected can be mounted, and the second mounting portion to which an adapter to which the other end is connected can be mounted (1). ) Or the housing for optical wiring components according to (2).

(4) The wall is
An adapter mounting portion having the first mounting portion and the second mounting portion, and
A groove forming portion facing the adapter mounting portion and having the groove,
The housing for optical wiring components according to (3) above.

(5) The housing for an optical wiring component according to any one of (1) to (4) above, wherein both ends of the groove in the extending direction are also opened on the side opposite to the bottom surface.

(6) The housing for an optical wiring component according to any one of (1) to (5) above, wherein the groove penetrates the wall portion in the extending direction of the groove.

(7) The housing for optical wiring components according to any one of (1) to (6) above,
The optical wiring housed in the housing for the optical wiring component with a part inserted in the groove, and the optical wiring.
An optical wiring component characterized by being provided with.
(8) The optical wiring component according to (7) above, wherein the optical wiring has a function of distributing light.

(9) The optical wiring according to (7) or (8) above, wherein the optical wiring includes a first optical fiber, a second optical fiber, and an optical waveguide connecting the first optical fiber and the second optical fiber. parts.

(10) The optical wiring component according to (9) above, wherein the optical wiring is housed in a state where the optical waveguide is inserted into the groove and the first optical fiber and the second optical fiber are wound. ..

(11) An electronic device including the optical wiring component according to any one of (7) to (10) above.

According to the present invention, it is possible to obtain a housing for an optical wiring component that is compact and can suppress a decrease in transmission efficiency in the accommodated optical wiring.
Further, according to the present invention, an optical wiring component that is small and has little loss can be obtained.

Further, according to the present invention, it is possible to save space for accommodating optical wiring components, and it is possible to obtain a highly reliable electronic device.

It is a perspective view which shows the optical wiring component which concerns on 1st Embodiment. It is an exploded view of the optical wiring component shown in FIG. FIG. 3 is a plan view showing a state in which the lid of the optical wiring component shown in FIG. 1 is removed. It is a top view which shows the extended state of the light guide part housed in the housing among the optical wiring parts shown in FIG. It is an enlarged view of the part A of FIG. It is sectional drawing of the light guide part shown in FIG. It is sectional drawing of the light guide part shown in FIG. FIG. 6 is an enlarged view of part B in FIG. FIG. 3 is a cross-sectional view taken along the line CC of the housing for optical wiring components shown in FIG. FIG. 3 is a cross-sectional view taken along the line DD of the housing for optical wiring components shown in FIG. It is a figure which shows typically the positional relationship between the light guide part and a groove shown in FIG. It is a partially enlarged view of FIG. It is a perspective view of the housing for an optical wiring component included in the optical wiring component which concerns on 2nd Embodiment. FIG. 13 is a cross-sectional view taken along the line HH of the housing for optical wiring components shown in FIG. It is a perspective view of the housing for an optical wiring component included in the optical wiring component which concerns on 3rd Embodiment.

Hereinafter, the housing for optical wiring components, the optical wiring components, and the electronic device of the present invention will be described in detail based on the preferred embodiments shown in the accompanying drawings.

1. 1. First Embodiment 1.1. Optical Wiring Parts First, the optical wiring parts according to the first embodiment will be described.

FIG. 1 is a perspective view showing an optical wiring component according to the first embodiment. FIG. 2 is an exploded view of the optical wiring component shown in FIG. FIG. 3 is a plan view showing a state in which the lid of the optical wiring component shown in FIG. 1 is removed. FIG. 4 is a plan view showing a state in which the light guide portion housed in the housing is extended among the optical wiring components shown in FIG. FIG. 5 is an enlarged view of part A of FIG. 6 and 7 are cross-sectional views of the light guide portion shown in FIG. 5, respectively. FIG. 8 is an enlarged view of part B of FIG. FIG. 9 is a sectional view taken along line CC of the housing for optical wiring components shown in FIG. FIG. 10 is a cross-sectional view taken along the line DD of the housing for optical wiring components shown in FIG.

In addition, in FIG. 6 and FIG. 7, a part of the optical waveguide is simplified. Further, in each figure, the X-axis, the Y-axis, and the Z-axis are set as three axes orthogonal to each other, and each axis is indicated by an arrow. The tip side of the arrow is the plus side of each axis, and the base end side is the minus side. Further, in the following description, for convenience of explanation, the positive side of the Z axis will be referred to as “upper” and the negative side will be referred to as “lower”.

The optical wiring component 100 shown in FIGS. 1 to 3 includes a first optical fiber 1, a second optical fiber 2, a third optical fiber 3, an optical waveguide 4, and a housing 5. Of these, the first optical fiber 1, the second optical fiber 2, and the third optical fiber 3 are optically connected via the optical waveguide 4, as shown in FIG. As a result, the light guide unit 10 (optical wiring) is configured. The light guide portion 10 shown in FIG. 2 is bent so as to be curved in the middle in the XY plane, and is housed inside the housing 5 in that state.

As shown in FIG. 2, the housing 5 includes a container 5a and a lid 5b.
The lid 5b is fitted into the opening of the container 5a. As a result, a space is formed inside the housing 5, and the light guide portion 10 can be accommodated in the space.

The core portion 44 shown in FIG. 5 is formed in the optical waveguide 4, and the core portion 44 is branched into two at the branch portion 46. Therefore, for example, the light incident on the first optical fiber 1 from the outside is branched into two at the branch portion 46 and distributed to the second optical fiber 2 and the third optical fiber 3. Therefore, the optical wiring component 100 in this case functions as an optical distributor. On the other hand, the light incident on the second optical fiber 2 and the third optical fiber 3 from the outside is mixed into one at the branch portion 46 and aggregated in the first optical fiber 1. Therefore, the optical wiring component 100 in this case functions as an optical mixer.

Hereinafter, each part of the optical wiring component 100 will be described in detail.
1.1.1. Housing The housing 5 (housing for optical wiring components) includes a container 5a and a lid 5b as described above. Of these, as shown in FIG. 2, the container 5a has a bottomed box shape having an opening that opens on the plus side of the Z axis.

The container 5a includes a bottom 501, a wall 500, and three fixing portions 509. Of these, as shown in FIG. 10, the bottom portion 501 includes a bottom surface 502 and a back surface 503 that are plate-shaped and have a front-back relationship with each other. The bottom surface 502 is the Z-axis plus side surface of the bottom 501, and the back surface 503 is the Z-axis minus side surface of the bottom 501.

The wall portion 500 is provided so as to project from the edge portion of the bottom surface 502 toward the Z-axis plus side, and has a frame shape in which the inside is a space. Further, the wall portion 500 includes the above-mentioned side walls 51, 52, 53 and 54. Of these, the side wall 51 includes penetrating portions 511 and 512 that penetrate the inside and the outside, as shown in FIG. Then, as shown in FIG. 2, the first optical adapter 6 is attached to the penetrating portion 511. Further, as shown in FIG. 2, a second optical adapter 7 is attached to the penetrating portion 512. The first optical adapter 6 has a shape that protrudes inside and outside the wall portion 500, respectively. Similarly, the second optical adapter 7 has a shape that protrudes inside and outside the wall portion 500, respectively.

The fixing portion 509 is provided with a screw hole that protrudes outward from the outer surface of the wall portion 500 and penetrates in the Z-axis direction. The housing 5 can be fixed to the fixed member by passing a screw through the screw hole and screwing it to the fixed member.

The first optical fiber 1 is inserted into the first optical adapter 6 as shown in FIG. 3, and the second optical fiber 2 and the third optical fiber 3 are inserted into the second optical adapter 7 as shown in FIG. ing.

The light guide portion 10 in a state of being wound in an annular shape is in contact with the side wall 52. In other words, when the light guide portion 10 in the state of being wound in an annular shape, that is, in the wound state comes into contact with the side wall 52, the light guide portion 10 is prevented from expanding and the wound state of the light guide portion 10 is maintained. be able to. However, it is not essential that the light guide portion 10 comes into contact with the side wall 52. Further, it is not essential that the light guide portion 10 is wound in an annular shape.

Further, the container 5a further includes two side walls 53 and 54 parallel to the YZ plane. The side wall 53 is located on the X-axis plus side of the bottom surface 502, and the side wall 54 is located on the X-axis minus side of the bottom surface 502.

The lid 5b has a plate shape that can cover the opening of the container 5a, and the plan view shape seen from the direction along the Z axis is the same as that of the container 5a.

The shape of the housing 5 described above is an example, and is not limited to this. For example, the container 5a and the lid 5b may be connected to each other. Further, the container 5a may be an assembly formed by assembling a plurality of parts.

Examples of the constituent material of the container 5a and the lid 5b include polyolefins such as polyethylene, polypropylene, ethylene-propylene copolymer, ethylene-vinyl acetate copolymer (EVA), cyclic polyolefin, modified polyolefin, and polychloride. Vinyl, polyvinylidene chloride, polystyrene, polyamide, polyimide, polyamideimide, polycarbonate (PC), poly- (4-methylpentene-1), ionomer, acrylic resin, acrylonitrile-butadiene-styrene copolymer (ABS resin), Acrylonitrile-styrene copolymer (AS resin), butadiene-styrene copolymer, polyoxymethylene, polyvinyl alcohol (PVA), ethylene-vinyl alcohol copolymer (EVOH), polyethylene terephthalate (PET), polybutylene terephthalate (PBT) ), Polycyclohexane terephthalate (PCT) and other polymers, polyether, polyether ketone (PEK), polyether ether ketone (PEEK), polyetherimide, polyacetal (POM), polyphenylene oxide, modified polyphenylene oxide, polysulfone, polyether. Sulfone, polyphenylene sulfide, polyarylate, aromatic polyester (liquid crystal polymer), polytetrafluoroethylene, polyvinylidene fluoride, other fluororesins, styrene-based, polyolefin-based, polyurethane-based, polyester-based, polyamide-based, polybutadiene-based, transformer Various thermoplastic elastomers such as polyisoprene type, fluororubber type, chlorinated polyethylene type, epoxy resin, phenol resin, urea resin, melamine resin, unsaturated polyester, silicone resin, etc., or blends mainly composed of these, polymer alloys Etc., and one or a combination of two or more of these can be used.

Among these, as the constituent material of the container 5a and the constituent material of the lid 5b, one selected from the group consisting of polyamide, polyvinyl chloride, polycarbonate, acrylic resin, polyethylene terephthalate and ABS resin is preferably used. These are useful as constituent materials because of their relatively high bending strength.

Further, as shown in FIGS. 2 and 9, the housing 5 has a groove 57 which is open to the inner surface (inner surface) of the side wall 52 and extends in a direction including a component parallel to the bottom surface 502. .. In the example shown in FIGS. 2 and 9, the groove 57 extends in a direction parallel to the bottom surface 502, that is, in the X-axis direction. By inserting a part of the light guide portion 10, particularly the optical waveguide 4, into the groove 57, the optical waveguide 4 can be held in a constant posture. As a result, the optical waveguide 4 is less likely to be loaded. As a result, it is possible to obtain a housing 5 capable of realizing the optical wiring component 100 which is small and has less loss. The groove 57 will be described in detail later.

Further, the container 5a includes pedestals 504 and 505 having a trapezoidal shape protruding from the bottom surface 502. The pedestal portion 504 is provided at a position corresponding to the penetrating portion 511. Further, the pedestal portion 505 is provided at a position corresponding to the penetrating portion 512.

As shown in FIGS. 2 and 3, the first optical adapter 6 is mounted on the upper surface of the pedestal portion 504. Further, as shown in FIGS. 2 and 3, a second optical adapter 7 is placed on the upper surface of the pedestal portion 505.

Then, as described above, the first optical fiber 1 of the light guide unit 10 is inserted into the first optical adapter 6. Further, as described above, the second optical fiber 2 and the third optical fiber 3 of the light guide unit 10 are inserted into the second optical adapter 7. Further, as shown in FIG. 3, a part of the light guide portion 10 is housed in the space 56 between the side wall 52 and the pedestals 504 and 505 in a state of being wound in an annular shape.

1.1.2. First Optical Fiber The first optical fiber 1 includes a first optical fiber main body 11 and a first optical connector 12 attached to an end portion of the first optical fiber main body 11.

Among these, examples of the first optical fiber main body 11 include a glass optical fiber, a plastic optical fiber, and the like.

Further, the waveguide mode of the first optical fiber main body 11 may be a single mode or a multi-mode, but the multi-mode is preferable. In the multi-mode, the tolerance for misalignment during alignment is larger than in the single mode. Therefore, the multi-mode first optical fiber main body 11 can facilitate the connection work at the time of optical connection with the optical waveguide 4, and is useful from the viewpoint of improving the ease of assembling the optical wiring component 100. be.

The first optical fiber main body 11 shown in FIGS. 6 and 7 has a circular cross-sectional shape, and has a core portion 111 located at the center thereof and a clad portion 112 covering the side surface thereof. The first optical fiber main body 11 may have a covering portion that covers the side surface of the clad portion 112, if necessary. Examples of the constituent material of the covering portion include a resin material, a glass material, a metal material, a fiber-reinforced composite material, and the like.

Note that FIG. 6 is a cross-sectional view taken along a line from the first optical fiber 1 to the second optical fiber 2 via the optical waveguide 4. Further, FIG. 7 is a cross-sectional view taken along a line from the first optical fiber 1 to the third optical fiber 3 via the optical waveguide 4.

Further, of the two end faces of the first optical fiber main body 11, the end face on the optical waveguide 4 side shown in FIGS. 6 and 7 is designated as the first light entrance / exit surface 113. The first light entrance / exit surface 113 and the optical waveguide 4 are optically connected via a first adhesive portion 81, which will be described later.

The first optical connector 12 has an insertion hole (not shown), and the first optical fiber main body 11 is held by inserting the end portion of the first optical fiber main body 11 into the insertion hole.

Examples of the first optical connector 12 include a ceramic optical connector, a glass optical connector, and a plastic optical connector. Further, the first optical connector 12 may have these various optical connectors as a main body, and metal fittings may be attached to the main body.

Further, the first optical connector 12 may be an assembly of a ferrule and a housing into which the ferrule can be inserted. The housing has a shape according to various standards for optical connection. Examples of this standard include SC, FC, MU, D, DJ, ST, LC, SCF, SCH, MT, MPO, MT-RJ and the like.

11.3. The second optical fiber The second optical fiber 2 includes a second optical fiber main body 21 and a second optical connector 22 attached to an end portion of the second optical fiber main body 21.

Among these, examples of the second optical fiber main body 21 include a glass optical fiber, a plastic optical fiber, and the like.

Further, the waveguide mode of the second optical fiber main body 21 may be a single mode or a multi-mode, but the multi-mode is preferable. In the multi-mode, the tolerance for misalignment during alignment is larger than in the single mode. Therefore, the multi-mode second optical fiber main body 21 can facilitate the connection work at the time of optical connection with the optical waveguide 4, and is useful from the viewpoint of improving the ease of assembling the optical wiring component 100. be.

The second optical fiber main body 21 shown in FIG. 6 has a circular cross-sectional shape, and has a core portion 211 located at the center thereof and a clad portion 212 covering the side surface thereof. The second optical fiber main body 21 may have a covering portion that covers the side surface of the clad portion 212, if necessary. Examples of the constituent material of the covering portion include a resin material, a glass material, a metal material, a fiber-reinforced composite material, and the like.

Further, of the two end faces of the second optical fiber main body 21, the end face on the optical waveguide 4 side shown in FIGS. 6 and 8 is designated as the second light entrance / exit surface 213. The second light entrance / exit surface 213 and the optical waveguide 4 are optically connected via a second adhesive portion 82, which will be described later.

The second optical connector 22 has an insertion hole (not shown), and the second optical fiber main body 21 is held by inserting the end portion of the second optical fiber main body 21 into the insertion hole.

Examples of the second optical connector 22 include a ceramic optical connector, a glass optical connector, and a plastic optical connector. Further, the second optical connector 22 may have these various optical connectors as a main body, and metal fittings may be attached to the main body.

Further, the second optical connector 22 may be an assembly of a ferrule and a housing into which the ferrule can be inserted. The housing has a shape according to various standards for optical connection. Examples of this standard include SC, FC, MU, D, DJ, ST, LC, SCF, SCH, MT, MPO, MT-RJ and the like.

1.1.4. The third optical fiber The third optical fiber 3 includes a third optical fiber main body 31 and a third optical connector 32 attached to an end portion of the third optical fiber main body 31.

Among these, examples of the third optical fiber main body 31 include a glass optical fiber, a plastic optical fiber, and the like.

Further, the waveguide mode of the third optical fiber main body 31 may be a single mode or a multi-mode, but the multi-mode is preferable. In the multi-mode, the tolerance for misalignment during alignment is larger than in the single mode. Therefore, the multi-mode third optical fiber main body 31 can facilitate the connection work when optically connecting to the optical waveguide 4, and is useful from the viewpoint of improving the ease of assembling the optical wiring component 100. be.

The third optical fiber main body 31 shown in FIG. 7 has a circular cross-sectional shape, and has a core portion 311 located at the center thereof and a clad portion 312 covering the side surface thereof. The third optical fiber main body 31 may have a covering portion that covers the side surface of the clad portion 312, if necessary. Examples of the constituent material of the covering portion include a resin material, a glass material, a metal material, a fiber-reinforced composite material, and the like.

Further, of the two end faces of the third optical fiber main body 31, the end face on the optical waveguide 4 side shown in FIG. 7 is designated as the third light entrance / exit surface 313. The third light entrance / exit surface 313 and the optical waveguide 4 are optically connected via a third adhesive portion 83, which will be described later.

The third optical connector 32 has an insertion hole (not shown), and the third optical fiber main body 31 is held by inserting the end portion of the third optical fiber main body 31 into the insertion hole.

Examples of the third optical connector 32 include a ceramic optical connector, a glass optical connector, and a plastic optical connector. Further, the third optical connector 32 may have these various optical connectors as a main body, and metal fittings may be attached to the main body.

Further, the third optical connector 32 may be an assembly of a ferrule and a housing into which the ferrule can be inserted. The housing has a shape according to various standards for optical connection. Examples of this standard include SC, FC, MU, D, DJ, ST, LC, SCF, SCH, MT, MPO, MT-RJ and the like.

1.1.5. Optical Waveguide As described above, the optical waveguide 4 is provided between the first optical fiber 1, the second optical fiber 2, and the third optical fiber 3, and optically connects them.

The optical waveguide 4 shown in FIG. 8 is a sheet-like laminated body in which a lower protective layer 47, a clad layer 41, a core layer 43, a clad layer 42, and an upper protective layer 48 are laminated in this order from the lower side. I have. Further, as shown in FIG. 5, a linear core portion 44 and a side clad portion 45 provided adjacent to the core portion 44 are formed in the core layer 43.

Hereinafter, each part of the optical waveguide 4 will be described in more detail.
11.5.1. Core layer The side surface of the core portion 44 shown in FIG. 5 is surrounded by the side clad portion 45 shown in FIG. 5 and the clad layers 41 and 42 shown in FIG. The refractive index of the core portion 44 is higher than that of the side clad portion 45 and the clad layers 41 and 42. As a result, light can be confined and propagated in the core portion 44.

In the core layer 43, the refractive index distribution in the plane orthogonal to the optical path may be any distribution, for example, a so-called step index (SI) type distribution in which the refractive index changes discontinuously. It may be a so-called graded index (GI) type distribution in which the refractive index is continuously changed.

Further, the cross-sectional shape of the core portion 44 by the plane orthogonal to the optical path of the core portion 44 is not particularly limited, and the cross-sectional shape of the core portion 44 is not particularly limited. It may have other irregular shapes.

Further, the average thickness of the core layer 43 is not particularly limited, and the coupling loss is minimized according to the diameters of the core portions 111, 211, and 311 of the first optical fiber main body 11, the second optical fiber main body 21, and the third optical fiber main body 31. However, it is preferably about 1 to 500 μm, more preferably about 10 to 300 μm, and even more preferably about 30 to 100 μm. This ensures the optical properties and mechanical strength required for the core 44.

Examples of the constituent material (main material) of the core layer 43 include acrylic resin, methacrylic resin, polycarbonate, polystyrene, cyclic ether resin such as epoxy resin and oxetane resin, polyamide, polyimide, polybenzoxazole, and the like. Polysilane, polysilazane, silicone resin, fluororesin, polyurethane, polyolefin resin, polybutadiene, polyisoprene, polychloroprene, polyester such as PET and PBT, polyethylene succinate, polysulfone, polyether, and benzocyclobutene resin. And various resin materials such as cyclic olefin-based resins such as norbornene-based resins can be mentioned. As the resin material, a composite material in which materials having different compositions are combined may be used.

Further, the core portion 44 shown in FIG. 5 includes a branch portion 46. In the branch portion 46, one core portion 44 is branched into two. Thereby, for example, the light incident on one core portion 44 can be distributed to the two core portions 44 at the branch portion 46.

11.5.2. Clad layer The average thickness of the clad layers 41 and 42 is preferably about 1 to 200 μm, more preferably about 3 to 100 μm, and even more preferably about 5 to 60 μm. This ensures the optical properties and mechanical strength required for the clad layers 41, 42.

Further, as the constituent material of the clad layers 41 and 42, for example, the same material as the constituent material of the core layer 43 described above can be used.

The clad layers 41 and 42 may be provided as needed or may be omitted. At this time, for example, if the core layer 43 is exposed to the outside air (air), the outside air functions as the clad layers 41 and 42.

Further, the side surface clad portion 45 in the core layer 43 and one or both of the clad layer 41 and the clad layer 42 may be integrated.

11.5.3. Protective layer The lower protective layer 47 and the upper protective layer 48 protect the core layer 43 and the clad layers 41 and 42, suppress the decrease in transmission efficiency of the core portion 44 due to the external environment and the like, and the optical waveguide 4 Increase mechanical strength.

Examples of the constituent materials of the lower protective layer 47 and the upper protective layer 48 include materials containing various resins such as polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polyolefins such as polyethylene and polypropylene, polyimide, and polyamide. Can be mentioned.

The average thickness of the lower protective layer 47 and the upper protective layer 48 is not particularly limited, but is preferably about 5 to 500 μm, and more preferably about 10 to 400 μm.

Further, the lower protective layer 47 and the upper protective layer 48 may have the same configuration or different configurations from each other.

The lower protective layer 47 and the upper protective layer 48 may be provided as needed, and at least one of them may be omitted.

1.1.6. Adhesive portion Of the optical waveguide 4, the end face on the first optical fiber 1 side shown in FIGS. 6 and 7 is designated as the fourth light inlet / output surface 491, and the end face on the second optical fiber 2 side shown in FIG. 6 and the third end surface shown in FIG. The end surface on the optical fiber 3 side is designated as the fifth light entrance / exit surface 492. The first light entrance / exit surface 113 of the first optical fiber 1 and the fourth light entrance / exit surface 491 of the optical waveguide 4 are optically connected via the first adhesive portion 81. Further, the second light entrance / exit surface 213 of the second optical fiber 2 and the fifth light entrance / exit surface 492 of the optical waveguide 4 are optically connected via the second adhesive portion 82. Further, the third light entrance / exit surface 313 of the third optical fiber 3 and the fifth light entrance / exit surface 492 of the optical waveguide 4 are optically connected via the third adhesive portion 83. The second adhesive portion 82 and the third adhesive portion 83 may be integrated with each other so that the boundary cannot be determined.

As the first adhesive portion 81, the second adhesive portion 82, and the third adhesive portion 83, any adhesive can be used as long as it is a light-transmitting adhesive. For example, an epoxy adhesive or an acrylic adhesive. , Urethane-based adhesives, silicone-based adhesives, olefin-based adhesives, various hot melt adhesives (polyester-based, modified olefin-based) and the like.

The curing principles of the first adhesive portion 81, the second adhesive portion 82, and the third adhesive portion 83 are not particularly limited, and may be a thermosetting type, a curing agent mixed type, a solvent volatilization type, or the like. It is preferably a photocurable type. That is, it is preferable that the first adhesive portion 81, the second adhesive portion 82, and the third adhesive portion 83 each contain a cured product of a photocurable adhesive. The photocurable adhesive can be cured in a short time while holding the object to be adhered with a light-transmitting jig or the like. Therefore, the optical waveguide 4 and the first optical fiber 1, the second optical fiber 2, and the third optical fiber 3 can be fixed accurately and easily in a aligned state. As a result, the optical coupling efficiency of the connecting portion can be further increased. The photocurable type includes an ultraviolet curable type.

When the first adhesive portion 81, the second adhesive portion 82, and the third adhesive portion 83 contain a cured product of the photocurable adhesive, the first adhesive portion 81, the second adhesive portion 82, and the third adhesive portion The elastic modulus of 83 can be made relatively large. Specifically, the elastic moduli of the first adhesive portion 81, the second adhesive portion 82, and the third adhesive portion 83 are preferably about 100 to 20000 MPa, more preferably about 300 to 15000 MPa, and even more preferably about 300 to 15000 MPa. It is about 500 to 12500 MPa, and particularly preferably about 1000 to 10000 MPa. By setting each elastic coefficient of the first adhesive portion 81, the second adhesive portion 82, and the third adhesive portion 83 within the above range, the first adhesive portion 81, the second adhesive portion 82, and the third adhesive portion 83 are deformed. Therefore, after aligning the optical waveguide 4, the first optical fiber 1, the second optical fiber 2, and the third optical fiber 3, misalignment is less likely to occur. Therefore, the photocoupling efficiency can be maintained well.

The elastic moduli of the first adhesive portion 81, the second adhesive portion 82, and the third adhesive portion 83 are measured by the method specified in JIS K 7127, and the measurement temperature is 25 ° C.

Further, the refractive index of the first adhesive portion 81 is not particularly limited, but is preferably a value between the refractive index of the core portion 111 of the first optical fiber main body 11 and the refractive index of the core portion 44 of the optical waveguide 4. .. By setting the refractive index of the first adhesive portion 81 within the above range, the first adhesive portion 81 has a refractive index adjusting function. Therefore, it is possible to suppress the occurrence of coupling loss due to the difference in refractive index between the first optical fiber 1 and the optical waveguide 4, and it is possible to realize an optical wiring component 100 having good optical coupling efficiency. ..

Similarly, the refractive index of the second adhesive portion 82 is not particularly limited, but is a value between the refractive index of the core portion 211 of the second optical fiber main body 21 and the refractive index of the core portion 44 of the optical waveguide 4. preferable. By setting the refractive index of the second adhesive portion 82 within the above range, the second adhesive portion 82 has a refractive index adjusting function. Therefore, it is possible to suppress the occurrence of coupling loss due to the difference in refractive index between the second optical fiber 2 and the optical waveguide 4, and it is possible to realize an optical wiring component 100 having good optical coupling efficiency. ..

Similarly, the refractive index of the third adhesive portion 83 is not particularly limited, but is a value between the refractive index of the core portion 311 of the third optical fiber main body 31 and the refractive index of the core portion 44 of the optical waveguide 4. preferable. By setting the refractive index of the third adhesive portion 83 within the above range, the third adhesive portion 83 has a refractive index adjusting function. Therefore, it is possible to suppress the occurrence of coupling loss due to the difference in refractive index between the third optical fiber 3 and the optical waveguide 4, and it is possible to realize an optical wiring component 100 having good optical coupling efficiency. ..

1.1.7. Optical Adapter Of the two surfaces intersecting the Y-axis of the first optical adapter 6, the surface on the minus side of the Y-axis is provided with one insertion portion 61 into which the first optical fiber 1 can be inserted, as shown in FIG. Has been done. On the other hand, as shown in FIGS. 2 and 3, one insertion portion 62 into which the optical fiber of the connection partner optically connected to the first optical fiber 1 can be inserted is provided on the surface on the positive side of the Y-axis. .. Therefore, the first optical fiber 1 and the optical fiber of the connection partner are optically connected via the first optical adapter 6.

The first optical adapter 6 may comply with various standards relating to the optical connector housing. Examples of this standard include SC, FC, MU, D, DJ, ST, LC, SCF, SCH, MT, MPO, MT-RJ and the like.

Of the two surfaces intersecting the Y-axis of the second optical adapter 7, the surface on the minus side of the Y-axis has an insertion portion 71a into which the second optical fiber 2 can be inserted and a third optical fiber 3 as shown in FIG. An insertable portion 71b is provided. The two insertion portions 71a and 71b are aligned along the X axis. On the other hand, on the surface on the positive side of the Y-axis, insertion portions 72a and 72b into which the optical fiber of the connection partner optically connected to the second optical fiber 2 or the third optical fiber 3 is inserted are provided. Therefore, the second optical fiber 2 and the third optical fiber 3 and the two optical fibers to be connected to each other are optically connected via the second optical adapter 7. The two insertion portions 72a and 72b are aligned along the X axis.

The second optical adapter 7 may comply with various standards relating to the optical connector housing. Examples of this standard include SC, FC, MU, D, DJ, ST, LC, SCF, SCH, MT, MPO, MT-RJ and the like.

The second optical adapter 7 may be divided into a portion having the insertion portions 71a and 72a and a portion having the insertion portions 71b and 72b.

1.1.8. Accommodation of the light guide portion in the housing The first optical fiber 1, the second optical fiber 2, and the third optical fiber 3 shown in FIGS. 2 and 3 are housed in the space 56 in a wound state. In the following description, the first optical fiber 1, the second optical fiber 2, and the third optical fiber 3 may be referred to as "first optical fiber 1, etc." In the first optical fiber 1 and the like curved in this way, a restoring force that tries to return from the curved state is generated. Therefore, the winding body formed by the first optical fiber 1 or the like, that is, the ring, tends to be deformed in the direction of increasing its diameter. Along with this, the first optical fiber 1 and the like are pressed against the inner surface of the wall portion 500.

On the other hand, in the present embodiment, the optical waveguide 4 provided between the first optical fiber 1, the second optical fiber 2, and the third optical fiber 3 is inserted into the groove 57. When the optical waveguide 4 is inserted into the groove 57, the displacement of the optical waveguide 4 inside the housing 5 is regulated by the groove 57. Therefore, the optical waveguide 4 and the connection portion between the optical waveguide 4 and the first optical fiber 1 and the like can be held in a constant posture. This posture means, for example, a posture in which the optical waveguide 4 and the connection portion between the optical waveguide 4 and the first optical fiber 1 and the like are straightly extended along the groove 57.

By holding in such a posture, it is possible to suppress the application of a mechanical load to the optical waveguide 4 and to suppress the generation of a large stress. Further, it is possible to suppress the mechanical load from being applied to the connection portion between the optical waveguide 4 and the first optical fiber 1, that is, the first adhesive portion 81, the second adhesive portion 82, and the third adhesive portion 83, resulting in a large stress. Can be suppressed. As a result, it is possible to suppress a decrease in the transmission efficiency of the light guide unit 10. In the following description, the first adhesive portion 81, the second adhesive portion 82, and the third adhesive portion 83 may be referred to as "first adhesive portion 81 or the like".

Further, since the optical waveguide 4 is fixed to the housing 5 and is less likely to swing, there is an advantage that the transmission efficiency of the light guide unit 10 is suppressed from being lowered due to the swing.

As described above, the housing 5 which is the housing for the optical wiring component according to the present embodiment has a plate shape and is provided with a bottom portion 501 having a bottom surface 502 and a bottom portion 502 protruding from the bottom surface 502, and the bottom surface 502 is viewed in a plan view. It is provided with a container 5a having a wall portion 500 having a frame shape. The wall portion 500 has a groove 57 that opens inside the wall portion 500 and extends in a direction that includes a component parallel to the bottom surface 502, and into which the light guide portion 10 that is an optical wiring is inserted.

According to such a housing 5, as described above, by inserting the optical waveguide 4 into the groove 57, the optical waveguide 4 and the first adhesive portion 81 and the like are stretched straight along the groove 57. Can be retained. As a result, it is possible to suppress the application of a mechanical load to the optical waveguide 4, the first adhesive portion 81, and the like, and to suppress the generation of a large stress. As a result, it is possible to suppress a decrease in the transmission efficiency of the light guide unit 10. Further, since the light guide portion 10 can be housed in the housing 5 in a small wound state while suppressing a decrease in transmission efficiency in this way, it is possible to obtain a compact optical wiring component 100 with little loss. can.

FIG. 11 is a diagram schematically showing the positional relationship between the light guide portion 10 and the groove 57 shown in FIG. FIG. 12 is a partially enlarged view of FIG. Note that FIG. 12 shows the light guide portion 10 in addition to the container 5a shown in FIG.

Further, the optical waveguide 4 which is a part of the light guide portion 10 has a sheet shape having two main surfaces having a front and back relationship with each other. That is, the cross-sectional shape of the optical waveguide 4 is an anisotropic shape having a short axis extending in the vertical direction of FIG. 5 and a long axis extending in the horizontal direction of FIG. 5 and longer than the short axis. .. The length W1 of the groove 57 in the direction orthogonal to the bottom surface 502 shown in FIG. 12 (Z-axis direction) is preferably shorter than the length of the long axis, that is, the width W of the optical waveguide 4 shown in FIG. As a result, the optical waveguide 4 inserted in the groove 57 can be held in the posture shown in FIG.

Specifically, even if the optical waveguide 4 inserted into the groove 57 shown in FIG. 11 tries to rotate with the X axis as the rotation axis in the groove 57, further rotation is caused by the inner surface of the groove 57 at a certain angle. Be regulated. Therefore, the optical waveguide 4 can be held in a constant posture, that is, in a posture in which the main surface intersects the Z axis.

Further, when the length of the groove 57 in the Y-axis direction, that is, the depth of the groove 57 shown in FIG. 12 is D1, the depth D1 of the groove 57 is equal to or larger than the width W of the optical waveguide 4 shown in FIG. Is preferable. As a result, the optical waveguide 4 can be sufficiently accommodated in the groove 57. As a result, it becomes easier to hold the optical waveguide 4 in a constant posture.

When the width W0 of the first adhesive portion 81 or the like shown in FIG. 5 is wider than the width W of the optical waveguide 4 shown in FIG. 5, the depth D1 of the groove 57 shown in FIG. 12 is the first. The width W0 or more of the adhesive portion 81 or the like may be used.

Further, the width of the first optical fiber 1 or the like may be wider than the width W of the optical waveguide 4 shown in FIG. For example, when the second optical fiber 2 and the third optical fiber 3 are in parallel, the total width of both may exceed the width W of the optical waveguide 4. In such a case, the depth D1 of the groove 57 shown in FIG. 12 is preferably equal to or larger than the width of the first optical fiber 1 or the like.

The position of the groove 57 on the side wall 52 is not particularly limited, but is preferably about half the height H0 of the side wall 52 shown in FIG. Specifically, the length from the bottom surface 502 to the lower end of the groove 57 in the Z-axis direction, that is, the height H2 of the groove 57 shown in FIG. 12 is about 20 to 80% of the height H0 of the side wall 52. Is preferable, and more preferably about 30 to 70%. As a result, it is possible to prevent the position of the groove 57 from being too low or too high, and further reduce the load applied to the optical waveguide 4, the first adhesive portion 81, and the like.

The posture of the optical waveguide 4 in the groove 57 is not limited to the shown posture. That is, the shape and the like of the groove 57 is not particularly limited as long as the optical waveguide 4 can be inserted. For example, the main surface of the optical waveguide 4 may be held in a posture facing the bottom surface of the groove 57, that is, in a posture intersecting the Y-axis, or may be held in a posture other than that. It may be like this.

Further, in FIG. 3, the optical waveguide 4 is inserted into the groove 57, and the first optical fiber 1 and the like in a wound state are housed in the space 56 between the side wall 52 and the pedestals 504 and 505. By accommodating the light guide portion 10 (optical wiring) in such a state, the first optical fiber 1 and the like generate a force in the direction in which the ring expands due to its own elasticity. Therefore, the light guide portion 10 is settled in a state of being pressed against the inner surface of the wall portion 500. At that time, the optical waveguide 4 is held in a state of being inserted into the groove 57. As a result, even if an impact or the like is applied to the optical wiring component 100, the probability that the optical waveguide 4 will come out from the groove 57 can be reduced. Therefore, the optical waveguide 4 can be held in the groove 57 by utilizing the restoring force of the light guide unit 10 without using a member or the like for fixing the optical waveguide 4.

Further, the wall portion 500 includes a through portion 511 (first mounting portion) to which the first optical adapter 6 to which one end (first optical fiber 1) of the light guide portion 10 which is an optical wiring is connected can be mounted, and a light guide portion. It has a through portion 512 (second mounting portion) to which a second optical adapter 7 to which the other end of 10 (second optical fiber 2 and third optical fiber 3) is connected can be mounted.

Since such a housing 5 can easily mount the first optical adapter 6 and the second optical adapter 7, it contributes to improving the workability of assembling the optical wiring component 100.

Here, the wall portion 500 includes a side wall 51 and a side wall 52 as described above, of which the side wall 51 includes a penetrating portion 511 (first mounting portion) and a penetrating portion 512 (second mounting portion). ) Is the adapter mounting part. On the other hand, the side wall 52 is a groove forming portion facing the side wall 51 and having a groove 57.

In this way, the side wall 51 and the side wall 52 provided at positions facing each other via the space 56 ensure the maximum distance from each other within the limited size of the housing 5. As a result, since the area of the space 56 is sufficiently secured, it is not necessary to reduce the diameter of the wound body by the first optical fiber 1 or the like more than necessary, and the bending loss of the first optical fiber 1 or the like can be suppressed. As a result, it is possible to suppress an increase in the transmission loss of the light guide unit 10 without inviting an increase in the size of the housing 5.

Further, the optical wiring component 100 includes a housing 5 and a light guide unit 10 housed in the housing 5. The light guide portion 10 is housed in a state in which a part thereof is inserted in the groove 57, that is, a state in which the optical waveguide 4 is inserted in the groove 57 in the present embodiment. According to such a configuration, the optical waveguide 4 and the like can be held in a straightened state even when the first optical fiber 1 and the like are wound in a small size. As a result, it is possible to realize the optical wiring component 100 which is small in size but has little loss.

Further, in the optical wiring component 100, the light guide unit 10 has a function of branching (distributing) light. That is, the core portion 44 of the optical waveguide 4 includes a branch portion 46. Since such an optical wiring component 100 suppresses a decrease in the S / N ratio in the light guide unit 10 in a bent state, it becomes a compact and highly reliable optical distributor or optical mixer in optical communication. ..

The optical waveguide 4 may have a function other than the above. Functions other than the above include, for example, attenuation of optical signals. When the optical waveguide 4 has such a function, the third optical fiber 3 can be omitted from the above-mentioned optical wiring component 100, and the optical wiring component 100 is small and has high reliability in optical communication. It becomes an attenuator.

Further, in the present embodiment, the light guide unit 10 described above is taken as an example of the optical wiring, but the optical wiring is not limited to this. For example, the optical waveguide 4 may be replaced by an optical fiber.

Further, the light guide unit 10 includes a first optical fiber 1, a second optical fiber 2, a third optical fiber 3, and an optical waveguide 4 that connects the first optical fiber 1, the second optical fiber 2, and the third optical fiber 3. As described above, the optical waveguide 4 can be provided with various functions. Therefore, by connecting the first optical fiber 1, the second optical fiber 2, and the third optical fiber 3 via the optical waveguide 4, a long light guide portion 10 having various functions can be obtained, and further. , It is possible to obtain an optical wiring component 100 having various functions.

A member for fixing the light guide portion 10 to the housing 5 may be provided. Examples of such a member include an adhesive tape, an adhesive tape, an adhesive, an adhesive and the like.

Further, the holding property of the light guide portion 10 may be enhanced by accommodating a resin material such as a potting agent in the housing 5 and preferably filling the housing 5.

Here, as shown in FIG. 4, the length of the first optical fiber 1 is L1, the length of the second optical fiber 2 is L2, and the length of the third optical fiber 3 is L3.

The length L2 and the length L3 may be the same as each other, but are preferably different from each other as shown in FIG. As a result, when the shorter of the second optical fiber 2 and the third optical fiber 3 is curved so as to be inward, the position of the second optical connector 22 and the position of the third optical connector 32 can be easily aligned. .. Then, at that time, the extra length of the optical fiber is less likely to occur. As a result, it is possible to prevent the load from being applied to the second adhesive portion 82 or the third adhesive portion 83 due to the extra length.

Further, the length L1 of the first optical fiber 1 may be longer than both the length L2 of the second optical fiber 2 and the length L3 of the third optical fiber 3, but in FIG. 4, it is shorter than both. That is, it is preferable that the light guide unit 10 satisfies L1 <L2 and L1 <L3.

In the light guide unit 10 that satisfies such a relationship, the ratio of the lengths L2 and L3 to the total length becomes large. Then, when the light guide portion 10 is bent, for example, even when the bending radius varies due to a manufacturing error or the like, the second optical fiber 2 or the third optical fiber 3 is less likely to have an extra length. In other words, by increasing the proportion of the lengths L2 and L3 in the total length, the range of the bending radius that can suppress the occurrence of bending can be expanded. As a result, it is possible to realize the light guide portion 10 capable of suppressing an increase in the photobonding loss in the second adhesive portion 82 or the third adhesive portion 83.

The number of branches of the core portion 44 in the branch portion 46 of the optical waveguide 4 is not limited to the above two, and may be three or more. In that case, a fourth optical fiber, a fifth optical fiber, ..., In addition to the second optical fiber 2 and the third optical fiber 3, may be added to the branch side.

Further, when the number of branches of the core portion 44 is three or more, the second optical adapter 7 may be capable of connecting the above-mentioned fourth optical fiber, fifth optical fiber, and so on.

When the longest side of each side of the main surface of the optical waveguide 4 is set as the long axis, the length L4 of the long axis of the optical waveguide 4 shown in FIG. 4 is slightly different depending on the number of branches, but 5 to 5 It is preferably about 80 mm, more preferably about 7 to 50 mm.

Further, when the length of the short axis orthogonal to the long axis of the optical waveguide 4 is taken as the width, the width W of the optical waveguide 4 shown in FIG. 5 is about 1.0 to 15 mm, although it differs slightly depending on the number of branches. Is preferable, and more preferably about 1.5 to 10 mm.

Further, the thickness t of the optical waveguide 4 shown in FIGS. 6 and 7 is preferably about 50 to 500 μm, more preferably about 100 to 300 μm.

The diameter φ1 of the first optical fiber main body 11, the diameter φ2 of the second optical fiber main body 21, and the diameter φ3 of the third optical fiber main body 31 are not particularly limited, but are preferably about 100 to 1000 μm, preferably about 200 to 800 μm. It is more preferable to have it. Thereby, the mechanical characteristics of the first optical fiber main body 11, the second optical fiber main body 21, and the third optical fiber main body 31 can be optimized. As a result, when the light guide portion 10 is bent, it is possible to achieve both rigidity that does not bend and a restoring force that is not too large.

The total length of the light guide unit 10 is not particularly limited, but is preferably about 5 to 200 cm, more preferably about 10 to 100 cm.

2. Second Embodiment Next, the housing for optical wiring components and the optical wiring components according to the second embodiment will be described.
FIG. 13 is a perspective view of a housing for an optical wiring component included in the optical wiring component according to the second embodiment. FIG. 14 is a sectional view taken along line HH of the housing for optical wiring components shown in FIG.

Hereinafter, the second embodiment will be described, but in the following description, matters different from those of the first embodiment will be described, and the same matters will be omitted. In addition, in FIG. 13 and FIG. 14, the same reference numerals are given to the same configurations as those in the first embodiment.

In the housing 5 according to the first embodiment described above, the side wall 52 has a groove 57, and the groove 57 opens in a direction other than the Y-axis plus side as shown in FIGS. 2 and 9. Not done.

On the other hand, in the housing 5C according to the present embodiment, as shown in FIGS. 13 and 14, both ends of the groove 57 in the extending direction are opened on the side opposite to the bottom surface 502. Specifically, the housing 5C shown in FIGS. 13 and 14 has a groove 57 extending in the X-axis direction and a groove 58 extending upward from both ends of the groove 57 to open the groove 57 to the outside. And have.

By providing such grooves 57 and 58, the work of accommodating the light guide portion 10 in the housing 5C can be performed more efficiently.

More specifically, when the light guide portion 10 is housed in the housing 5C, it is necessary to insert the optical waveguide 4, the first adhesive portion 81, and the like into the groove 57 as described above. This insertion work tends to apply a large stress to the optical waveguide 4 and the first adhesive portion 81 depending on the bending condition of the light guide portion 10, and requires caution, so that there is a problem that it is difficult to improve the work efficiency. ing.

Therefore, in the present embodiment, when the light guide portion 10 is housed in the housing 5C, first, as shown in FIG. 14, it is possible to go through the step of suspending the light guide portion 10 from above in a U shape. do. At this time, the position of the optical waveguide 4 in the X-axis direction is adjusted so that the optical waveguide 4 is located at the lower end of the light guide unit 10.

Next, the hanging position of the optical waveguide 4 in the Y-axis direction is adjusted so that the suspended optical waveguide 4 is inserted into the groove 57. At this time, when the optical waveguide 4 is inserted into the groove 57, the first optical fiber 1 and the like connected to the optical waveguide 4 pass through the groove 58. By passing the first optical fiber 1 or the like through the groove 58 in this way, it is possible to prevent the first optical fiber 1 or the like from interfering with the side wall 52, and the optical waveguide 4 is smoothly guided to the groove 57. Can be done. As a result, the accommodation work of the light guide unit 10 can be efficiently performed.

In FIG. 14, the length of the groove 58 in the X-axis direction is d1, and the length of the groove 57 in the X-axis direction is d2.

The length d1 of the groove 58 is preferably 10 times or more and 50 times or less the diameter φ1 of the first optical fiber main body 11, the diameter φ2 of the second optical fiber main body 21, and the diameter φ3 of the third optical fiber main body 31. It is more preferably 35 times or more and 35 times or less. As a result, the suspended light guide portion 10 can be smoothly inserted into the groove 58 while avoiding that the length d2 of the groove 57 becomes too short. Therefore, the accommodation work of the light guide unit 10 can be performed more efficiently.

The length d2 of the groove 57 is preferably equal to or longer than the length L4 of the long axis of the optical waveguide 4 shown in FIG. As a result, the optical waveguide 4 can be sufficiently accommodated in the groove 57. As a result, it becomes easier to hold the optical waveguide 4 in a constant posture.
Also in the second embodiment as described above, the same effect as that of the first embodiment can be obtained.

3. 3. Third Embodiment Next, the housing for the optical wiring component and the optical wiring component according to the third embodiment will be described.
FIG. 15 is a perspective view of a housing for an optical wiring component included in the optical wiring component according to the third embodiment.

Hereinafter, the third embodiment will be described, but in the following description, matters different from those of the second embodiment will be described, and the same matters will be omitted. In FIG. 15, the same reference numerals are given to the same configurations as those in the second embodiment.

In the housing 5C according to the second embodiment described above, the groove 57 is located inside the wall portion 500. Therefore, the groove 57 is not exposed to the outside of the housing 5C.

On the other hand, in the housing 5D according to the present embodiment, the groove 57 penetrates the wall portion 500 in the extending direction thereof. That is, as shown in FIG. 15, the groove 57 extends in the X-axis direction, penetrates the side walls 53 and 54, respectively, and is exposed to the outside of the housing 5D. Further, in the housing 5D shown in FIG. 15, the groove 58 is also widened in the X-axis direction, penetrates the side walls 53 and 54, and is exposed to the outside of the housing 5D.

According to such a configuration, when the light guide portion 10 is suspended as shown in FIG. 14, the first optical fiber 1 and the like can be projected to the outside of the wall portion 500. That is, as shown in FIG. 14, when the light guide portion 10 is suspended in a U shape from above, it is not necessary to forcibly fit the first optical fiber 1 or the like inside the wall portion 500. As a result, the work of inserting the suspended optical waveguide 4 into the groove 57 can be performed without making the minimum bending radius of the light guide portion 10 when suspended in a U shape unnecessarily small. As a result, it is possible to more efficiently perform the accommodating work of the light guide unit 10 while suppressing damage to the light guide unit 10 due to bending.

The groove 57 preferably penetrates both the side walls 53 and 54, but may penetrate only one of them. Similarly, the groove 58 preferably penetrates both the side walls 53 and 54, but may penetrate only one of them.
Also in the third embodiment as described above, the same effect as that of the second embodiment can be obtained.

4. Electronic Equipment According to the optical wiring components according to the above-described embodiment, it is possible to realize a small-sized optical wiring component with little loss. Therefore, an electronic device provided with such an optical wiring component can save space for accommodating the optical wiring component and is highly reliable.

The electronic device of the present invention includes, for example, information and communication devices such as smartphones, tablet terminals, mobile phones, game machines, router devices, WDM devices, personal computers, televisions, servers, supercomputers, as well as instruments for vehicles, aircraft, and ships. Kind, automobile control equipment, aircraft control equipment, railroad vehicle control equipment, ship control equipment, spacecraft control equipment, mobile control equipment such as rocket control equipment, power plants, refineries, steel mills, chemical complexes, etc. It is applied to plant control equipment that controls plants.

The housing for optical wiring components, optical wiring components, and electronic devices of the present invention have been described above based on the illustrated embodiments, but the present invention is not limited thereto.

For example, in the housing for optical wiring components and the optical wiring components of the present invention, the configurations of each part of the embodiment may be replaced with arbitrary configurations having the same functions, and the configurations of the above embodiments may be arbitrary. The configuration of may be added.

1 1st optical fiber 2 2nd optical fiber 3 3rd optical fiber 4 Optical waveguide 5 Housing 5C Housing 5D Housing 5a Container 5b Lid 6 1st optical adapter 7 2nd optical adapter 10 Light guide 11 1st optical fiber body 12 1 Optical connector 21 2nd optical fiber main body 22 2nd optical connector 31 3rd optical fiber main body 32 3rd optical connector 41 Clad layer 42 Clad layer 43 Core layer 44 Core part 45 Side clad part 46 Branch part 47 Lower protection layer 48 Upper protection Layer 51 Side wall 52 Side wall 53 Side wall 54 Side wall 56 Space 57 Groove 58 Groove 61 Insertion part 62 Insertion part 71a Insertion part 71b Insertion part 72a Insertion part 72b Insertion part 81 First adhesive part 82 Second adhesive part 83 Third adhesive part 100 Light Wiring parts 111 Core part 112 Clad part 113 1st light input / output surface 211 Core part 212 Clad part 213 2nd light input / output surface 311 Core part 312 Clad part 313 3rd light input / exit surface 491 4th light input / output surface 492 5 Light input / output surface 500 Wall 501 Bottom 502 Bottom 503 Back surface 504 Pedestal 505 Fixed 591 Fixed part 511 Penetration part 512 Penetration part

Claims (11)

A housing for optical wiring components that houses optical wiring.
A plate-shaped bottom with a bottom and
A wall portion that is provided so as to project from the bottom surface and has a frame shape when the bottom surface is viewed in a plane.
With
A housing for an optical wiring component, wherein the wall portion opens inside the wall portion, extends in a direction including a component parallel to the bottom surface, and has a groove into which the optical wiring is inserted. body. The cross-sectional shape of the optical wiring has an anisotropic shape having a short axis and a long axis longer than the short axis.
The housing for an optical wiring component according to claim 1, wherein the length of the groove in the direction orthogonal to the bottom surface is shorter than the length of the long axis. The wall portion according to claim 1 or 2, wherein the wall portion has a first mounting portion to which an adapter to which one end of the optical wiring is connected can be mounted, and a second mounting portion to which an adapter to which the other end is connected can be mounted. The housing for the optical wiring components described. The wall part
An adapter mounting portion having the first mounting portion and the second mounting portion, and
A groove forming portion facing the adapter mounting portion and having the groove,
The housing for optical wiring components according to claim 3. The housing for an optical wiring component according to any one of claims 1 to 4, wherein both ends of the groove in the extending direction are also opened on the side opposite to the bottom surface. The housing for an optical wiring component according to any one of claims 1 to 5, wherein the groove penetrates the wall portion in the extending direction of the groove. The housing for optical wiring components according to any one of claims 1 to 6.
The optical wiring housed in the housing for the optical wiring component with a part inserted in the groove, and the optical wiring.
An optical wiring component characterized by being provided with. The optical wiring component according to claim 7, wherein the optical wiring has a function of distributing light. The optical wiring component according to claim 7 or 8, wherein the optical wiring includes a first optical fiber, a second optical fiber, and an optical waveguide connecting the first optical fiber and the second optical fiber. The optical wiring component according to claim 9, wherein the optical wiring is accommodated in a state in which the optical waveguide is inserted into the groove and the first optical fiber and the second optical fiber are wound. An electronic device comprising the optical wiring component according to any one of claims 7 to 10.

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