JP2000314813A - Optical connecting parts - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an optical connecting part that is capable of easily connecting optical components such as an optical element, optical circuit package and an optical circuit device, that is superior in manufacturing characteristics and that is easy to handle. SOLUTION: The optical connecting part is provided with a base material, a plurality of optical fibers having a terminal part for optically connecting to the end in a two-dimensional plane, a resin protective layer 2 fixing and protecting the optical fibers in a buried state, and a weir-like object 7 provided for the purpose of forming the resin protective layer 2; the resin protective layer 2 is surrounded by the weir-like object, with an intermediate weir 7a also installed inside the layer 2. In this case, it is desirable that the resin protective layer 2 is divided into zones with different film thicknesses by means of an intermediate weir.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical device, an optical circuit package, and an optical connection device for interconnecting optical devices, components, and devices used for optical communication and optical information processing such as optical circuit devices. Optical wiring board).

[0002]

2. Description of the Related Art Generally, in connection of a plurality of optical elements in an optical circuit package, between a plurality of optical circuit packages, or in optical connection of an optical circuit device on which the optical circuit package is mounted, an optical element or an optical circuit package is generally used. An optical connector is arranged at an end of an optical circuit device or the like and is connected to each other by an optical fiber. In this case, since the optical fibers need to be arranged with an extra length, for example, on the optical circuit package or inside and / or the back of the optical circuit device, complicated wiring by the optical fibers is formed in a bird's nest, Or at present, they are congested and occupy a large space. For an optical connection method that requires a great deal of space and connection labor for such complicated wiring, an optical fiber is arbitrarily wired on a two-dimensional plane to solve these problems easily. A method has been proposed. For example, as disclosed in Japanese Patent No. 2574611, there has been proposed an optical connecting part that uses a sheet or substrate coated with an adhesive and fixes an optical fiber thereby.

[0003] By the way, the optical connection component described in Japanese Patent No. 2574611 is manufactured by laying an optical fiber with an adhesive on a base material (base layer) or a fiber jacket to form a wiring pattern. Above,
An optical connection component is obtained by forming a protective layer by coating using a material similar to the material used for the base material. However, according to this method, as the number of laid optical fibers increases and the overlapping portion (crossover wiring) of the optical fibers in the formed wiring pattern increases, the thickness of the optical fiber wiring layer increases, and In the overlapping part of the optical fiber,
There is a problem in that the protective layer cannot be provided uniformly because the number of adhesive surfaces with which the optical fibers are in contact decreases. Further, there is a problem that the fixing force of the adhesive is weakened in the overlapping portion of the optical fiber in the wiring pattern, the optical fiber is moved, and the optical fiber in the wiring pattern is displaced (collapse of the wiring pattern).
Furthermore, a typical optical fiber has a diameter of 125 to 250 μm.
m, for example, 375 to 750 at three overlapping portions
When the thickness of the optical fiber is increased to μm and the number of overlapping portions of the optical fiber in the wiring pattern increases, a floating portion (air layer) of the protective layer is formed around the optical fiber below the protective layer, which causes a problem in reliability with respect to temperature and humidity. In addition to this, there is a problem that the optical wiring board is significantly weakened against destruction due to deformation such as bending. Further, since the film-like base material is provided on both sides of the two-dimensionally wired optical fiber, the flexibility of the optical connection part is significantly reduced, and the connection between the optical elements on the optical circuit package and the mutual connection between the optical circuit packages. In connection, it is necessary to provide a long and thin tab, and there is a problem that if the space for installing the optical connection component is narrow, it cannot be used because of insufficient flexibility and flexibility.

[0004] In order to solve these problems, it has been studied to fix a congested and wired optical fiber by forming a resin protective layer on the optical fiber wired on the adhesive layer. However, even in this case, where the optical fiber is congested and wired in multiple layers, the optical fiber plays a role of a reinforcing material, and the optical fiber that is congested in multiple layers and is connected to the optical fiber. Since the material and the resin protective layer have different follow-up properties with respect to bending, the flexibility of the entire optical wiring board is reduced, and Japanese Patent No. 2574611 is disclosed.
There is a problem that it cannot be used when the space for installing the optical connection component is narrow, as in the case of the optical connection component described in Japanese Unexamined Patent Publication (Kokai) No. H10-209686. Furthermore, since the optical fiber wired in multiple layers on the adhesive layer has a weak fixing force, the optical fiber is peeled off from the adhesive layer and lifted up by wiring or when forming the resin protective layer, so that the optical fiber is fixed. There is a problem that it is difficult to form a sufficient resin protective layer.

[0005]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems in the prior art. That is, an object of the present invention is to provide an optical device that can easily connect optical connection parts such as optical elements, optical circuit packages, and optical circuit devices as described above, has good manufacturability, and is easy to handle such as handling. To provide a connection component.

[0006]

An optical connecting part according to the present invention comprises at least a plurality of optical fibers having terminal portions for optically connecting to ends two-dimensionally wired;
A resin protective layer that fixes and protects the optical fiber in a buried state, and a weir-like material provided for forming the resin protective layer, wherein the weir-like material is in the resin protective layer. It is characterized by being provided as a middle weir.

[0007] The optical connection component of the present invention is roughly classified into a first embodiment having a base material and a second embodiment having no base material. A plurality of optical fibers each having a resin protection layer provided on the base material, and a terminal portion for optically connecting to a two-dimensionally wired end fixed in a state buried in the resin protection layer. ,
And a weir-like material provided for forming a resin protective layer, wherein the weir-like material is provided as a middle weir in the resin protective layer. In this case, the resin protective layer may be divided into zones having different film thicknesses by the middle weir.

The optical connection component according to the second aspect is characterized in that two laminated resin protective layers and two-dimensionally wired end portions fixed in at least one of the resin protective layers in a buried state. A plurality of optical fibers having terminal portions for optical connection to the optical fiber, and a weir-like object provided for forming a resin protective layer, wherein the weir is provided in the resin protective layer to which the optical fiber is fixed. The article is provided as a middle weir. In this case, the resin protective layer may be divided into zones having different film thicknesses by the middle weir.

[0009]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a plan view of an example of a wiring pattern in the optical connection component of the present invention, and FIG.
FIG. 3 is a plan view of an example of the optical connection component of the present invention in which a weir-like material is provided on the wiring pattern of FIG. 1 to form a resin protective layer, and FIG. 3 is a cross-sectional view taken along line AA of FIG. (A)) and BB sectional drawing (FIG.3 (b)). 2 and 3
In FIG. 1, a plurality of optical fibers 4 are two-dimensionally wired on one surface of a base material 1 with an adhesive layer 3 interposed therebetween, and these optical fibers 4 form a resin protective layer. 7, ie, the peripheral weir 7 b and the middle weir 7 a, and fixed in a state buried in the resin protective layer 2.
Is protected. An end of the optical fiber 4 is a terminal portion 5 for optical connection, and an optical component 6, for example, an optical connector is connected. Note that the terminal portion 5 and the optical component 6 may be integrated.

FIG. 4 is a cross-sectional view of a case where the weir-like object shown in FIG. 2 is divided into the same zones except for changing the height.
FIG. 4A is a cross-sectional view of the optical fiber in the wiring direction, and FIG.
Is a cross-sectional view in a direction perpendicular to the wiring direction of the optical fiber. In FIG. 4, the outer zone of the four zones divided by the three middle weirs 7a is such that the weir-like material 7b at the periphery thereof is lower than the height of the middle weir 7a, whereby the resin protection layer is formed. No. 2 is divided into zones having two different film thicknesses, and the optical connection component is lighter in weight as compared with the case where the entire resin protective layer has the same film thickness.

FIG. 5 is a plan view of another example of the optical connection component of the present invention in which a weir-like material is provided on the wiring pattern of FIG. 1 to form a resin protective layer, and FIG. FIG. 7 is a cross-sectional view taken along a line A (FIG. 6A) and a cross-sectional view taken along a line BB (FIG. 6B). In these figures, the middle weir 7a is the optical fiber 4
In this case, flexibility is improved in the wiring direction of the optical fiber 4. Further, the resin protection layer 2 is divided into four by the middle weir 7a, thereby having zones having two different film thicknesses.

FIG. 7 is a plan view of another example of the optical connection component of the present invention in which a weir-like object is provided on the wiring pattern of FIG. 1 to form a resin protective layer, and FIG. FIG. 7 is a cross-sectional view taken along a line A (FIG. 7A) and a cross-sectional view taken along a line BB (FIG. 7B), showing a case where a middle weir is provided in a direction perpendicular to the optical fiber wiring direction. . In these figures, five middle weirs 7a are provided in the resin protective layer 2 to further improve flexibility and strength. In addition, the resin protection layer 2 is divided into six zones by middle weirs having different heights, so that the resin protection layer is formed of zones having three different film thicknesses, so that the optical connection component is lighter. It has been made into.

FIG. 9 is a plan view of still another example of the optical connection component of the present invention in which a weir-like material is provided on the wiring pattern of FIG. 1 to form a resin protective layer, and FIG. A-A
9A and FIG. 9A and FIG.
(B)). In these figures, five intermediate weirs 7a are provided in the resin protection layer 2 in the wiring direction of the optical fiber 4, and the flexibility in the wiring direction of the optical fiber is further improved. In addition, the resin protection layer 2 is divided into six zones by middle weirs having different heights, so that the resin protection layer is formed of zones having three different film thicknesses, so that the optical connection component is lighter. It has been made into.

FIG. 11 shows an example of the optical connecting component of the present invention having no base material, in which a resin protective layer 2a is provided instead of the base material 1 in FIG.
(A) is a sectional view of the optical fiber in the wiring direction, and FIG.
(B) is a cross-sectional view in a direction perpendicular to the wiring direction of the optical fiber.

FIG. 12 is a plan view of another example of the optical connection component of the present invention having a base material, and FIG.
2 is a sectional view taken along the line AA (FIG. 13A) and a sectional view taken along the line BB (FIG. 13B). In these figures,
Middle weirs are provided in two ways: a wiring direction of the optical fiber and a direction orthogonal thereto.

In the optical connecting part of the present invention, the base material having a two-dimensional plane for supporting the wired optical fiber is not particularly limited. For example, a glass-epoxy resin composite substrate, a polyester film, Any material such as a polyimide film, a gel material, a rubber material or a foam material of an organic material such as silicone or polyurethane can be used as long as it is a substrate used in ordinary electronic parts and electric parts. Any shape and hardness may be used. In the present invention, it is most effective to use a flexible base material. However, even when a rigid base material is used, the adhesive layer of the optical fiber at the time of wiring or when forming the resin protective layer is used. There is an effect that the formation of the resin protective layer can be easily performed by preventing the resin protective layer from floating.

The optical fiber to be wired in the present invention is appropriately selected and used according to the application purpose of the optical connecting part. For example, a single mode optical fiber or a multi-mode optical fiber made of quartz or plastic is preferably used. You.

As an adhesive for fixing the optical fiber to a base material or a temporary base material such as a peelable film, an adhesive for maintaining the shape of the optical fiber against the tension generated by bending the optical fiber to be wired. Any material having power can be used, for example, urethane,
Acrylic, epoxy, nylon, phenol,
Various pressure-sensitive adhesives (adhesives) such as polyimide, vinyl, silicone, rubber, fluorinated epoxy, and fluorinated acrylic, thermoplastic adhesives, and thermosetting adhesives can be used. From the ease of optical fiber wiring,
Pressure sensitive adhesives and thermoplastic adhesives are preferably used.

The resin constituting the flexible resin protective layer in the optical connection part of the present invention is not particularly limited, but a gel or rubber organic material, an ultraviolet curable resin, an electron beam A curable resin such as a curable resin or a thermosetting resin having flexibility, a thermoplastic resin having flexibility, or the like is used. More specifically, examples of the gel organic material include a silicone gel, an acrylic resin gel, and a fluorine resin gel. Examples of the rubber organic material include a silicone rubber, a urethane rubber, and a fluorine rubber. Rubber, acrylic rubber, ethylene-acrylic rubber,
SBR, BR, NBR, chloroprene rubber, and the like. Examples of the flexible curable resin include an epoxy resin, an ultraviolet curable adhesive, and a silicone resin. Examples of the flexible thermoplastic resin include resins constituting a hot melt adhesive such as acrylic resins such as polyvinyl acetate and polyethyl methacrylate, vinylidene chloride resins, polyvinyl butyral resins, and polyamide resins.

In addition, if necessary, on the resin protective layer,
A protective layer may be provided as long as the flexibility of the optical connection component required for using the optical connection component and the flexibility of the resin protective layer are not impaired. As the protective layer, for example, a silicone hard coat material having a thickness of about 1 μm is used.

In the optical connecting part of the present invention, usually,
For connection with the optical connector, an optical fiber extends from a desired position (port) on the end face of the optical connection component to form a termination portion, to which the optical connector is connected or connected to the optical connector. Fusion spliced with the optical fiber.
The optical connector connected to the optical connection component of the present invention is not particularly limited, but a single-core or multi-core small optical connector is preferably selected. For example, MPO optical connector, MT optical connector, MU optical connector, FPC optical connector (NTT
R & D, Vol. 45 No. 6,589) and the like.

The method for producing the optical connection component of the first embodiment having the substrate of the present invention includes the following method. For example, first, an adhesive sheet is prepared in which the above-mentioned adhesive layer is provided on one surface of a flexible film-like base material having a two-dimensional plane. Next, an optical fiber is wired in a desired pattern on the adhesive layer. At this time, the end of the optical fiber is pulled out of the film-like base material so as to be a terminal portion for optical connection with an optical connector or the like. In addition, as a method of providing an adhesive layer, an adhesive is directly applied on a film-like substrate, or in a state of being dissolved in a solvent to form a coating solution, roll coating, bar coating, blade coating, casting, dispenser coating, Spray coating, a method of applying by a method such as screen printing, and an adhesive sheet having an adhesive layer formed on a peelable film in advance is adhered to the film-like substrate, and then the peelable film is removed. Is adopted. The thickness of the adhesive layer may be appropriately selected and used depending on the diameter of the optical fiber to be wired, but is usually 1 μm to 1 mm, preferably 5 μm to 500 μm.
More preferably, it is set in the range of 10 to 300 μm.

On the optical fiber wired as described above, a resin protective layer is formed using a resin material for forming a resin protective layer having flexibility so that the optical fiber is embedded and fixed. Thus, the optical connection component of the present invention can be manufactured.

In the present invention, a method for providing a resin protective layer on a substrate on which an optical fiber is wired is provided by providing a weir-like material in an arbitrary shape on the periphery of the substrate and on the surface of the substrate, and forming the weir-like material on the substrate. May be filled with a resin material and solidified. For example, a method in which a resin material is dropped in a state of a coating solution dissolved in an appropriate solvent, a method of drying, a method of dropping a thermosetting resin in a liquid state, a method of heating and curing, a method of dropping a thermoplastic resin melted by heating, Solidification by cooling,
A resin protective layer can be formed by filling the inside portion surrounded by the weir in a solid state, heating and melting, and then solidifying.

The weir-like material may be provided in any shape on the surface of the substrate as an intermediate weir over the entire periphery of the substrate and as an intermediate weir. However, when optical components such as an optical connector, an optical module, and an optical device are mounted near the periphery of the base material, the optical components may serve as a weir-like material. It is not necessary to provide a weir-like material in the portion where the components are placed. In addition, the position where the middle weir is provided may be appropriately selected according to the purpose of use, but preferably, the optical fiber is congested in multiple layers, and the place where the fixation with the adhesive is weak, or in use, particularly It is preferable to provide it in a place or a direction where flexibility is required. By providing the middle weir as described above, the resin protective layer can be easily formed, the flexibility of the resin protective layer can be ensured, and the optical fiber can be sufficiently fixed and protected.

The material constituting the weir-like material is not particularly limited, and may be suitably selected according to the purpose of application of the optical connection part. In particular, polyethylene, polypropylene, nylon, etc. A nonwoven fabric made of an organic fiber, a nonwoven fabric made of a glass fiber, and a sealing agent (filler) made of a silicone, epoxy, urethane or acrylic resin are preferably used. Weirs are
The size and shape are not limited as long as the resin material filled in the inner portion surrounded by the inner portion does not flow out.

Here, the thickness (height of the weir-like material or the middle weir) of the resin protective layer for fixing and protecting the wired optical fiber in a buried state is determined by the diameter of the optical fiber to be wired and the number of overlapping optical fibers. The optical fiber may be appropriately selected in such a manner that the optical fiber is protected and fixed. Usually, in the resin protection layer divided by the weir-like material, the thickness is required to be equal to or greater than the height at which the optical fiber is the maximum overlap.

In the optical connection part of the present invention, an adhesive sheet having an adhesive layer on both sides is used as a base material, optical fibers are wired on both sides of the base material, and a resin protective layer similar to the above is formed. Optical fibers may be wired on both sides of the substrate.

If necessary, it is also possible to provide a resin protective layer on which no optical fiber is wired, on the back surface of the base material. In this case, the thickness of the resin protective layer may be appropriately selected and used so as to reduce the rigidity of the substrate, depending on the purpose of using the optical connection component.
It is set in the range of about m to several cm, preferably 10 μm to 10 mm, more preferably 30 μm to 1 mm.

Further, as a method for producing the optical connection component of the second aspect having no base material of the present invention, the following method can be mentioned. First, a peelable film provided with an adhesive layer is prepared, and an optical fiber is wired in a desired pattern on the adhesive layer. A weir-like material or a middle weir is provided on the periphery of the peelable film and on the wired optical fiber, and a first resin protective layer is formed using a flexible resin material for forming a resin protective layer. Next, after removing the peelable film, a weir-like material is provided on the periphery of the formed first resin protection layer, and the second resin protection layer is formed using the same or different resin material as the first resin protection layer. Form a layer. Alternatively, after removing the peelable film, a plurality of optical fibers are wired on the exposed adhesive layer so as to have an end portion for optically connecting to an end of the optical fiber, and the first resin protection formed A weir-like material or a middle weir is provided on the periphery of the layer and on the wired optical fiber, and the second resin protective layer is formed using the same or different resin material as the first resin protective layer. In the case of the optical connection component of the second embodiment having no base material thus produced, the weir-like material provided as the middle weir in the resin protective layer improves flexibility and bendability. It functions as a reinforcing material for the resin protective layer and facilitates handling such as handling.

Further, a plurality of optical connection parts are prepared in advance by the above-mentioned method, and an adhesive layer is directly provided on the surface of the resin protective layer, or the adhesive layer is resin-protected from a resin sheet provided with the adhesive layer in advance. It is also possible to provide an adhesive layer by transferring to the layer surface and stick these optical connection parts to produce an optical connection part composed of a multilayered laminate.

In the optical connecting part of the present invention produced as described above, an optical connecting part such as an optical connector or an optical module is connected to the terminal end of the drawn optical fiber. For example, the end of an optical fiber that has been subjected to an end face treatment to be connected to the optical connector is connected to the optical connector, or the end face of the optical fiber fixed to the optical connector, and each of the optical fibers pulled out from the optical fiber wiring member. The end face is fusion-spliced.

[0033]

The present invention will be described below with reference to examples.
The present invention is not limited to this. Example 1 A film-like base material (size: 120 mm × 100 mm) was prepared by coating an acrylic pressure-sensitive adhesive on one surface of a polyimide film having a thickness of 125 μm so as to have a thickness of 100 μm. As shown in FIG. 1, an optical fiber core wire (250 μm diameter, manufactured by Furukawa Electric Co., Ltd.) was wired per port (portion for taking out the optical fiber from the optical connection part) as follows.
That is, four optical fibers are juxtaposed at a pitch of 250 μm (the length of the juxtaposed portion is 3 mm from the end face of the long side of the film base).
0 mm), 4 ports on each side of the long side of the polyimide film (each port is composed of 4 optical fibers) 30 m
It was produced at m pitch. Each optical fiber is wired from one long side of the polyimide film to the other long side, and the wiring to each port on both sides is designed so that the intersection of each optical fiber is the center of the sheet by design, and the maximum Was set to four.

Thereafter, a silicone-based filler (manufactured by Konishi Co., Ltd.) was placed on the polyimide film on which the optical fiber was wired.
Weir-like material was provided using a bath bond. That is, using the silicone-based filler, the peripheral edge of the polyimide film and the middle weir are perpendicular to the wiring direction of the optical fiber, and are each 20 mm short from the end face of the long side of the polyimide film. At the center of the side, width 1.
A weir having a size of 5 mm and a height of 1.2 mm was formed (see FIGS. 2 and 3). Next, a silicone gel coating solution (manufactured by Dow Corning Toray, SE
-1880) was dropped, the silicone gel was cured at 120 ° C. for 1 hour, and the optical fiber was fixed with a resin protective layer material, a peripheral weir-like material and a middle weir, and had a thickness of 1.4.
mm optical wiring board was produced. Thereafter, an MU connector was connected to the end of the drawn optical fiber to obtain an optical wiring board as a final product.

The manufactured optical wiring board has triple optical fibers,
By installing a middle weir in the center part that crosses four times,
There is no breakage of the wiring pattern due to the floating of the multi-layered optical fiber, etc., and the fixation of the optical fiber is completed, and the decrease in the flexibility due to the multi-layered optical fiber is improved. There was something.

The loss of all the connected optical fibers was measured.
It was 4 dB or less. In addition, the fabricated optical wiring board was subjected to a high-temperature and high-humidity test of leaving at 5,000C for 90 hours at 75 ° C and a temperature cycle test of -40 ° C to 75 ° C for 500 times. It was 0.2 dB or less, which proved that it could be sufficiently used as an optical connection part.

Example 2 In Example 1, the direction of the middle weir was the direction perpendicular to the wiring direction of the optical fiber, and the position of 20 mm from the end face of the long side of the polyimide film and the position of the center of the short side (50 mm from both ends). ), The width is 1.5 mm and the height is 1.
Three 2 mm middle weirs were provided, and weirs of the same width and height were provided on both side edges of two central zones (120 × 30 mm) formed by the middle weirs. Similarly, the remaining width of the polyimide film is 1.
5. A weir having a height of 0.3 mm was provided (see FIGS. 2 and 4).
reference). Instead of the silicone gel coating solution, a silicone rubber coating solution (TSE399, manufactured by Toshiba Silicone Co., Ltd.) was dropped into the inside surrounded by each weir, and the silicone rubber was cured at 25 ° C. for 24 hours. An optical wiring board was manufactured in the same manner as in Example 1 except for the above. Thereafter, an MU connector was connected to the end of the drawn optical fiber to obtain an optical wiring board as a final product.

The manufactured optical wiring board has triple optical fibers,
By installing a middle weir in the center part that crosses four times,
The wiring pattern does not collapse due to the floating of the optical fibers arranged in multiple layers, the fixing of the optical fibers is completed, and the decrease in flexibility due to the optical fibers arranged in multiple layers is improved, and the flexibility and flexibility are improved. There was something. Further, in this optical wiring board, three middle dams are provided in the resin protective layer, and the film thickness of the resin protective layer is divided into two types of zones of 1.2 mm and 0.3 mm, so that the overall film thickness is reduced. 1.
The total weight is about 30 compared to 2mm optical connection parts.
% Lighter and easier handling such as handling.

The loss of all the connected optical fibers was measured.
It was 5 dB or less. In addition, the fabricated optical wiring board was subjected to a high-temperature and high-humidity test of leaving at 5,000C for 90 hours at 75 ° C and a temperature cycle test of -40 ° C to 75 ° C for 500 times. It was 0.3 dB or less, which proved that it could be sufficiently used as an optical connection part.

Example 3 In Example 1, the direction of the middle weir was set to be parallel to the wiring direction of the optical fiber, and the position of 20 mm from the end face of the short side of the polyimide film and the position of the center of the short side (60 mm from both ends). ), The width is 1.5 mm and the height is 1.
Three 2 mm middle weirs were provided, and weirs of similar width and height were provided on both side edges of two central zones (40 × 100 mm) formed by the middle weirs. Similarly, the width 1.
5. A weir having a height of 0.3 mm was provided (FIGS. 5 and 6).
reference). In place of the silicone gel coating solution, a silicone rubber coating solution (TSE399, manufactured by Toshiba Silicone Co., Ltd.) was dropped into the zone surrounded by each weir-like material.
An optical wiring board was produced in the same manner as in Example 1 except that the silicone rubber was cured under the conditions of time. Thereafter, an MU connector was connected to the end of the drawn optical fiber to obtain an optical wiring board as a final product.

The optical wiring board thus manufactured is provided with a middle weir at the center where the optical fibers intersect fourfold and at the part where the optical fibers intersect twofolds, so that the multi-layered optical fibers are floated by floating or the like. The pattern was not collapsed, the fixing of the optical fiber was completed, and the reduction in flexibility due to the optical fibers wired in multiple layers was improved, and the film was supple and flexible. Further, in this optical wiring board, three intermediate weirs are provided in the resin protective layer, and the thickness of the resin protective layer is divided into two types of zones of 1.2 mm and 0.3 mm.
Compared with an optical connection part having an overall film thickness of 1.2 mm, the overall weight is reduced by about 25%, and handling such as handling becomes easy.

When the loss of all the connected optical fibers was measured, the loss including the connection loss of the optical connector was measured.
It was 6 dB or less. In addition, the fabricated optical wiring board was subjected to a high-temperature and high-humidity test of leaving at 5,000C for 90 hours at 75 ° C and a temperature cycle test of -40 ° C to 75 ° C for 500 times. It was 0.4 dB or less, which proved that it could be sufficiently used as an optical connection part.

Example 4 In Example 1, the direction of the middle weir was perpendicular to the wiring direction of the optical fiber, and the position of 35 mm from the end face of the long side of the polyimide film and the position of the center of the short side (50 mm from both ends). ), The width is 1.5 mm and the height is 1.
Three 2 mm middle weirs were provided, and weirs of similar width and height were provided on both side edges of two central zones (120 × 15 mm) formed by the middle weirs. In addition, each of the polyimide films has a length of 20
1.5mm width and 0.5mm height respectively
In addition, weirs having the same width and height were provided on both side edges of the rectangular weir and the rectangular zone formed by the said weir. Further, a width of 1.5 and a height of 0.3 are similarly applied to the remaining peripheral portion of the polyimide film.
mm weir-like material was provided (see FIGS. 7 and 8). Instead of the silicone gel coating solution, a silicone rubber coating solution (manufactured by Toshiba Silicone Co., Ltd.)
TSE399) was dropped, and an optical wiring board was produced in the same manner as in Example 1 except that the silicone rubber was cured at 25 ° C. for 24 hours. Thereafter, an MU connector was connected to the end of the drawn optical fiber to obtain an optical wiring board as a final product.

The manufactured optical wiring board has triple optical fibers,
By providing a middle weir in the middle part of the four-fold crossing and the part in front of the double overlap of the optical fiber, the wiring pattern is not collapsed due to the floating of the multilayer-wired optical fiber, etc.
The fixation of the optical fiber was completed, and the reduction in flexibility due to the optical fibers wired in multiple layers was improved, and the fiber was supple and flexible. In addition, this optical wiring board is provided with five middle weirs in the resin protective layer, and by dividing the thickness of the resin protective layer into three types of zones of 1.2 mm, 0.5 mm and 0.3 mm, the overall 1.2mm thick
The overall weight is reduced by about 45% as compared with the optical connection part of No. 1, and handling such as handling is easy.

The loss of all the connected optical fibers was measured.
It was 5 dB or less. In addition, the fabricated optical wiring board was subjected to a high-temperature and high-humidity test of leaving at 5,000C for 90 hours at 75 ° C and a temperature cycle test of -40 ° C to 75 ° C for 500 times. It was 0.2 dB or less, which proved that it could be sufficiently used as an optical connection part.

Example 5 In Example 1, the direction of the middle weir was parallel to the wiring direction of the optical fiber, and the position of 45 mm from the end face of the short side and the position of the center of the long side (60 mm from both ends) of the polyimide film. ), The width is 1.5 mm and the height is 1.
Three 2 mm middle weirs were provided, and weirs of similar width and height were provided on both side edges of two central zones (15 × 100 mm) formed by the middle weirs. In addition, each of the polyimide films is 20 mm from the short end face.
1.5mm width and 0.8mm height respectively
In addition, weirs having the same width and height were provided on both side edges of the rectangular weir and the rectangular zone formed by the said weir. Further, a width of 1.5 and a height of 0.3 are similarly applied to the remaining peripheral portion of the polyimide film.
mm weirs were provided (see FIGS. 9 and 10). Instead of the silicone gel coating solution, a silicone rubber coating solution (TSE399, manufactured by Toshiba Silicone Co., Ltd.) was dropped into the zone surrounded by each weir, and the silicone rubber was cured at 25 ° C. for 24 hours. An optical wiring board was manufactured in the same manner as in Example 1 except for the above. Thereafter, an MU connector was connected to the end of the drawn optical fiber to obtain an optical wiring board as a final product.

The optical wiring board thus prepared is provided with a multilayer weir by providing a central weir at the center where the optical fibers intersect fourfold and at the part where the optical fibers intersect twofold and threefold. There was no collapse of the wiring pattern due to floating of the fiber, etc., and the fixation of the optical fiber was complete, and the decrease in flexibility due to the optical fiber wired in multiple layers was improved, and it was supple and flexible. . Further, this optical wiring board is provided with five middle dams in the resin protective layer, and the thickness of the resin protective layer is divided into three types of zones of 1.2 mm, 0.8 mm and 0.3 mm, so that the overall 1.2m thick
m, the overall weight is reduced by about 40% as compared with the optical connection part of m, and handling such as handling becomes easy.

When the loss of all the connected optical fibers was measured, the loss including the connection loss of the optical connector was measured.
It was 5 dB or less. In addition, the fabricated optical wiring board was subjected to a high-temperature and high-humidity test of leaving at 5,000C for 90 hours at 75 ° C and a temperature cycle test of -40 ° C to 75 ° C for 500 times. It was 0.3 dB or less, which proved that it could be sufficiently used as an optical connection part.

Example 6 In the same manner as in Example 1, an acrylic pressure-sensitive adhesive coating solution having a film thickness of 10 μm was coated on a 75 μm-thick silicone release film.
An acrylic pressure-sensitive adhesive layer was formed by coating so as to have a thickness of 0 μm, and a sheet (size: 120 mm × 100 mm) was prepared. An optical fiber was wired in the same manner as in Example 2 except that this sheet was used to form a first resin protective layer.

Next, the silicone-based release film was peeled off, and a second resin protective layer was formed on the exposed backside pressure-sensitive adhesive layer. That is, a silicone-based filler (manufactured by Konishi Corporation, Bath Bond) is applied to the periphery of the pressure-sensitive adhesive layer on the back surface to form a weir having a width of 0.8 mm and a height of 0.3 mm.
A silicone rubber coating solution (TSE399, manufactured by Toshiba Silicone Co., Ltd.) was dropped on the inside, and cured at 25 ° C. for 24 hours to form a second resin protective layer. Thereafter, an MU connector was connected to the end of the drawn optical fiber to obtain an optical wiring board as a final product.

The manufactured optical wiring board has triple optical fibers,
By installing a middle weir in the center part that crosses four times,
The wiring pattern does not collapse due to the floating of the optical fibers arranged in multiple layers, the fixing of the optical fibers is completed, and the decrease in flexibility due to the optical fibers arranged in multiple layers is improved, and the flexibility and flexibility are improved. There was something. Also, in this optical wiring board, even if a film-shaped substrate is not present, by providing the middle weir in the resin protective layer, the middle weir serves as a reinforcing material and increases the strength of the optical wiring board. It was done. Further, the thickness of the resin protective layer (including the resin protective layer on the back surface) is divided into two types, 1.5 mm and 0.6 mm, by three middle dams provided in the resin protective layer. The total weight was reduced by about 30% as compared with the optical connection part having a film thickness of 1.5 mm, and handling such as handling became easy.

When the loss of all the connected optical fibers was measured, the loss including the connection loss of the optical connector was reduced to 0.
It was 7 dB or less. In addition, the fabricated optical wiring board was subjected to a high-temperature and high-humidity test of leaving at 5,000C for 90 hours at 75 ° C and a temperature cycle test of -40 ° C to 75 ° C for 500 times. It was 0.4 dB or less, which proved that it could be sufficiently used as an optical connection part.

Example 7 In Example 1, the direction of the middle weir was two directions, a direction parallel to the wiring direction of the optical fiber and a direction perpendicular thereto, and a length of 100 mm was set at 35 mm from the end face of the short side of the polyimide film. And a middle weir having a length of 120 mm at the center of the short side (50 mm from both ends) with a width of 1.5 mm and a height of 1.2 mm, respectively. Then, a laminate having the same width and height as above was formed (see FIGS. 12 and 13). Next, instead of the silicone gel coating solution, in each zone formed by the middle weir and the weir-like material at the peripheral edge,
Silicone rubber coating solution (TSE3, manufactured by Toshiba Silicone Co., Ltd.)
99) was dropped and an optical wiring board was produced in the same manner as in Example 1 except that the silicone rubber was cured at 25 ° C. for 24 hours. Thereafter, an MU connector was connected to the end of the drawn optical fiber to obtain an optical wiring board as a final product.

The manufactured optical wiring board has triple optical fibers,
By providing a central weir at the center part that crosses four times and at the part that crosses two times and three times, the wiring pattern is not collapsed due to the floating of the multi-layered optical fiber, and the optical fiber is fixed. Was completed, and the reduction in flexibility due to the optical fibers wired in multiple layers was improved, and the fiber was flexible and flexible.

When the loss of all the connected optical fibers was measured, the loss including the connection loss of the optical connector was reduced to 0.1.
It was 6 dB or less. In addition, the fabricated optical wiring board was subjected to a high-temperature and high-humidity test of leaving at 5,000C for 90 hours at 75 ° C and a temperature cycle test of -40 ° C to 75 ° C for 500 times. It was 0.4 dB or less, which proved that it could be sufficiently used as an optical connection part.

[0056]

The optical connection part of the present invention facilitates the manufacture of an optical connection part including a portion of a resin protective layer, in particular, where optical fibers are multiplexed and congested, and the handling of the optical connection part. By providing a weir-like material as a middle weir in the part or direction where flexibility is required for the property, the collapse of the wiring pattern due to the floating of the optical fiber etc. is eliminated,
The fixing of the optical fiber is completed, and the reduction in flexibility due to the optical fibers arranged in multiple layers is improved, and the optical fiber is supple and flexible. In addition, since the resin protection layer is divided by the middle weir, the thickness of each divided resin protection layer can be changed by adjusting the height of the middle weir. In this case, an effect is obtained that the weight is reduced and the weight is reduced as compared with an optical connection component having a resin protective layer having a constant film thickness. Furthermore, in the case of an optical connection component having no base material, the strength of the optical connection component is increased because the middle weir present in the resin protective layer serves as a reinforcing material, and handling such as handling is easier. And it can be easily connected to other optical components.

[Brief description of the drawings]

FIG. 1 is a plan view of an example of a wiring pattern in an optical connection component of the present invention.

FIG. 2 is a plan view of an example of the optical connection component of the present invention.

3 is a sectional view taken along line AA and a line BB of an example of FIG. 2;

FIG. 4 is a sectional view of another example of the optical connection component of the present invention.

FIG. 5 is a plan view of another example of the optical connection component of the present invention.

6 is a sectional view taken along line AA and a line BB of FIG. 5;

FIG. 7 is a plan view of another example of the optical connection component of the present invention.

8 is a sectional view taken along line AA and a line BB of FIG. 7;

FIG. 9 is a plan view of still another example of the optical connection component of the present invention.

10 is a sectional view taken along line AA and a line BB of FIG. 9;

FIG. 11 is a sectional view of an example of the optical connecting component of the present invention having no base material.

FIG. 12 is a plan view of still another example of the optical connection component of the present invention.

13 is a sectional view taken along line AA and a line BB of FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Base material, 2, 2a ... Resin protective layer, 3 ... Adhesive layer, 4 ...
Optical fiber, 5 end portion, 6 optical component, 7 weir, 7a middle weir, 7b peripheral weir.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Kyoichi Sasaki, Inventor Kyoichi Sasaki 3-1 Yomune Tomoecho, Shizuoka City, Shizuoka Pref. No. 1 Inside the Technical Research Laboratory of Hamakawa Paper Mills Co., Ltd. (72) Inventor Tatsushi Kobayashi 3-1, Yomunehacho, Shizuoka City, Shizuoka Prefecture Inside the Technical Research Laboratory of Hamakawa Paper Mills Co., Ltd. Nishi-Shinjuku 3-19-2 Nippon Telegraph and Telephone Corporation (72) Inventor Mamoru Hirayama 3-19-2 Nishi-Shinjuku, Shinjuku-ku, Tokyo Nippon Telegraph and Telephone Corporation F-term (reference) 2H001 DD17 DD18 DD19 2H036 LA06 PA13 QA00 2H038 AA25 CA52

Claims (5)

[Claims] 1. A plurality of optical fibers having at least end portions for optically connecting to ends wired in a two-dimensional plane, and a resin protective layer for fixing and protecting the optical fibers in a buried state. And a weir provided for forming the resin protective layer, wherein the weir is provided as a middle weir in the resin protective layer. 2. A substrate, a resin protective layer provided on one or both surfaces of the substrate, and optically connected to a two-dimensionally wired end portion fixed in a state of being buried in the resin protective layer. It comprises a plurality of optical fibers having terminal portions for, and a weir-like material provided for forming a resin protective layer, wherein the weir-like material is provided as a middle weir in the resin protective layer. The optical connection component according to claim 1. 3. The optical connection component according to claim 2, wherein the resin protective layer is divided into zones having different film thicknesses by a middle weir. 4. A laminated resin protective layer having a terminal portion for optically connecting to a two-dimensionally wired end portion fixed in a state of being buried in at least one of the resin protective layers. A plurality of optical fibers, and a weir-like material provided to form a resin protective layer, wherein the weir-like material is provided as a middle weir in the resin protective layer to which the optical fiber is fixed. The optical connection component according to claim 1. 5. The optical connection component according to claim 4, wherein the resin protective layer is divided into zones having different film thicknesses by a middle weir.