JP2000019356A - Optical connecting parts and their manufacture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable easy optical connection of congested optical fiber wiring. SOLUTION: The optical connecting parts have plural two-dimensionally flatly wired optical fibers 4 having terminal portions for optical connection at their ends and resin protective layers 1, 2 which are laminated via adhesive layers 3 and have flexibility. The optical fibers are fixed in the state that the optical fibers are embedded in the resin protective layers. The manufacture thereof is executed by a method of, for example, forming an adhesive layer on a resin film formed by coating and arranging the plural optical fibers thereon, then forming the resin protective layers by melting or coating, etc., thereon and fixing the optical fibers thereto in the state of embedding the optical fibers in the resin protective layers.

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) and a method for manufacturing the same.

[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. A simple method for solving these problems by arbitrarily wiring an optical fiber on a two-dimensional plane for an optical connection that requires a great deal of space and labor for such complicated wiring. 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.

Incidentally, the optical connecting part described in Japanese Patent No. 2574611 is manufactured by using
An optical fiber is laid with a pressure-sensitive adhesive on a polymer film substrate (base layer) made of flexible Mylar or Kapton having a thickness of 0 μm or a fiber jacket to form a wiring pattern. Is coated with a material similar to the material used for the base material to obtain an optical connecting part. However, in the optical connection component manufactured by this method, although a flexible but low-elongation polymer substrate is provided above and below a layer having a thickness of several hundred μm to several mm composed of an optical fiber and an adhesive, There has been a problem that the flexibility required by the optical connection component is reduced. In the optical connecting part described in Japanese Patent No. 2574611, a tab extending long is provided in the optical connecting part in order to avoid the difficulty of the optical connecting work due to such rigidity. Elongation increases the location of the connection portion and also complicates the manufacture of the optical connection component.

Further, US Pat. No. 5,292,390 discloses a method of filling an optical fiber wiring layer laid with thermoplastic polyurethane for the purpose of fixing and protecting an optical fiber. However, even in this method,
Although it has plasticity, it uses a Kapton film with small elongation as the base material of the adhesive layer and the thermoplastic polyurethane layer that fixes the optical fiber.
The optical fiber wiring layer is sandwiched between these films,
The problem of low flexibility has not been solved. Japanese Patent Application Laid-Open No. H10-68853 discloses that an optical fiber is laid on a laminate in which a film base and an adhesive layer are provided with a compressible layer, and an optical fiber wiring layer is sandwiched between the laminates. It is shown to make a connecting part. However, the layer having compressibility in the present invention is provided for the purpose of relieving the pressure applied to the optical fiber at the time of producing the optical connection part, and the film base is left on the laminate layers on both sides sandwiching the optical fiber wiring. Thus, the problem that the flexibility of the optical connection component is low has not been solved.

[0005] As described above, in the conventional optical connecting parts in which an optical fiber using a flexible base material is laid and wired, a Mylar or Kapton film base material is provided on both sides of the two-dimensionally wired optical fiber. Is provided. Therefore, since such a film substrate is provided on both sides of the optical fiber wiring layer having a thickness of several hundred μm to several mm, the flexibility of the optical wiring component is significantly reduced, and for optical connection, It is necessary to provide a long and thin tab. Further, in the connection between the optical elements on the optical circuit package and the connection between the optical circuit packages, if the space for installing the optical connection component is small, the flexibility and the flexibility cannot be used because the space is insufficient. .

[0006]

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 a highly flexible optical connection component capable of easily connecting optical components such as an optical element, an optical circuit package, and an optical circuit device as described above, and a method for manufacturing the same. It is in.

[0007]

The optical connecting part of the present invention does not have a film base such as Mylar or Kapton on both sides of the surface, and has an end portion for optical connection at an end. It is characterized by having a plurality of optical fibers wired in a two-dimensional plane and a resin protective layer having flexibility, wherein the optical fibers are fixed while being buried in the resin protective layer.

[0008] As a preferable example of the optical connection component of the present invention, a plurality of optical fibers which are two-dimensionally wired and have an end portion for optical connection at an end portion, and which are laminated via an adhesive layer, may be used. One having two flexible resin protective layers, wherein the optical fiber is buried and fixed in at least one of the two resin protective layers.

A first method of manufacturing an optical connecting part according to the present invention is to optically connect an optical fiber end to an adhesive layer of a laminate comprising a resin protective layer having flexibility and an adhesive layer. A plurality of optical fibers are wired so as to have an end portion of, and then a flexible resin protective layer made of the same or different resin material as the resin protective layer is formed on the optical fiber to form the optical fiber. It is characterized by being fixed.
In the laminate, a resin protective layer is formed on a support having a peelable two-dimensional plane, and an adhesive layer is formed on the flexible resin protective layer formed by removing the support. It is preferably formed and formed, and specifically, has flexibility obtained by coating a resin layer forming material on a peelable film and removing the peelable film. One produced by forming an adhesive layer on a resin film is exemplified.

[0010] In a second method of manufacturing an optical connecting part according to the present invention, the optical connecting part comprises an adhesive layer having an adhesive layer on a support having a peelable two-dimensional plane. A plurality of optical fibers were wired so as to have an end portion for optical connection to the fiber end, and a first resin protective layer having flexibility was formed on the wired optical fibers to fix the optical fibers. Thereafter, the peelable support on the back surface is peeled off, and a flexible second resin protective layer made of the same or different resin material as the resin protective layer is formed on the exposed adhesive layer. I do.

In the above-mentioned second manufacturing method, after forming the first resin protective layer and fixing the optical fiber, the peelable support on the back surface is peeled off, and the optical fiber end is placed on the exposed adhesive layer. A plurality of other optical fibers are wired so as to have an end portion for optically connecting to the portion, and the optical fiber having flexibility has the same or different resin material as the first resin protective layer on the wired optical fibers. Forming a second resin protective layer,
It is also possible to fix the optical fiber and produce an optical connection component.

[0012]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a partially broken plan view of an example of the optical connection component of the present invention, and FIG. 2 is a cross-sectional view showing the optical connection component manufactured by the first manufacturing method. FIGS. 3 and 4 are cross-sectional views of another example of the optical connecting component of the present invention, and show the case of the optical connecting component manufactured by the second manufacturing method. In the figure, a flexible lower resin protective layer 1 and a flexible upper resin protective layer 2 made of the same or different material
Are laminated with an adhesive layer 3 interposed therebetween, and a plurality of optical fibers 4 are wired on the adhesive layer 3, and these optical fibers 4 are fixed while being buried in the resin protective layer. I have. 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. Reference numeral 7 denotes a weir-like material provided for forming the resin protective layer.

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. Preferably, the optical fiber is a carbon-coated optical fiber. In general, the major factors that determine the life of an optical fiber are the intrusion of water and hydrogen in the atmosphere.However, the carbon-coated optical fiber suppresses the intrusion of water and hydrogen, resulting in high reliability and long life. is there. Further, in the optical connecting component of the present invention, since a cable sheath that provides environmental resistance performance such as a normal optical cable is not provided, it is more effective to use a highly reliable carbon-coated optical fiber.

In the present invention, the simplest method of wiring an optical fiber is to provide an adhesive layer, and the method of wiring is the simplest. I just need. For example, an optical fiber can be wired by providing a groove or a protrusion for optical fiber wiring in the resin protective layer. In this case, a flexible resin protective layer is formed on the wired optical fiber. ,
Without the adhesive layer, an optical connection component in which a plurality of optical fibers are fixed in a state of being buried in a flexible resin protective layer is formed.

As the adhesive constituting the adhesive layer for wiring the optical fiber, any adhesive having an adhesive force for maintaining the shape of the optical fiber corresponding to the tension generated by bending the optical fiber to be wired can be used. , Anything can be used,
For example, urethane type, acrylic type, epoxy type, nylon type, phenol type, polyimide type, vinyl type, silicone type, rubber type, fluorinated epoxy type, fluorinated acrylic type etc. various pressure sensitive adhesives (adhesives), Thermoplastic adhesive,
Thermosetting adhesives can be used. A pressure-sensitive adhesive and a thermoplastic adhesive are preferably used from the viewpoint of ease of wiring the optical fiber.

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 silicone gel, acrylic resin gel, and fluoro resin gel. Examples of the rubber organic material include silicone rubber, urethane rubber, fluorine rubber, and acrylic rubber. Rubber, ethylene-acrylic rubber, SB
R, BR, NBR, chloroprene rubber and the like. As a flexible curable resin, epoxy resin,
UV-curable adhesives, silicone resins and the like.
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,
As long as the flexibility required for the use of optical connection components is not compromised,
A protective layer may be provided. As the protective layer, for example, a silicone-based hard coat material 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).

In the first method for producing the optical connection component of the present invention, first, a flexible resin protective layer is formed on a support having a peelable two-dimensional plane,
By removing the peelable support, a flexible resin protective layer is formed. That is, when the resin protective layer forming material having flexibility is in a liquid state, directly, or in a solid state, for example, in a liquid state by heating, or dissolved in a solvent to form a coating liquid. , Peelable film, such as silicone film, Teflon film, polyethylene terephthalate film, roll coating, bar coating, blade coating, casting, dispenser coating, spray coating, etc., drying or curing Then, the peelable support is peeled off. In the present invention, for example, a plastic film, a plastic plate, a metal plate, or the like is used as the support having a two-dimensional plane that can be peeled off.

Next, an adhesive layer is formed on the formed flexible resin protective layer to produce a laminate comprising the resin protective layer and the adhesive layer. As a method of providing an adhesive layer, on a resin protective layer, in a state where an adhesive is directly or dissolved in a solvent to form a coating solution, roll coating, bar coating, blade coating, casting, dispenser coating, spray coating, etc. A method of applying an adhesive layer by applying the method, and a method of attaching an adhesive sheet having an adhesive layer formed thereon in advance to the resin protective layer on a peelable film, and then removing the peelable film. 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.

An optical fiber is wired in a desired pattern on the adhesive layer of the laminate obtained by the above method. At this time, the end of the optical fiber needs to be pulled out so as to be a terminal end for optical connection with an optical connector or the like.

Next, a flexible resin protective layer is formed on the laminated body having the wired optical fibers by using the same or different resin material as the resin protective layer of the laminated body. The optical fiber is fixed in a state where it is buried in the resin protective layer, and the state is protected.
Here, the thickness of the resin protective layer may be appropriately selected depending on the diameter of the optical fiber to be wired and the number of overlapping optical fibers, so that the optical fiber is protected and fixed. Usually, a thickness of (optical fiber diameter) × (overlapping number) or more is required.

The simplest method of providing a resin protective layer on a laminated body having wired optical fibers is to provide a weir-like material at the periphery of or near the periphery of the above-mentioned laminate, and to form an inside of the formed weir-like material. The portion may be filled with a resin material and solidified. For example, a method of dissolving a resin material in an appropriate solvent to form a coating liquid, dripping and drying, a method of dripping a thermosetting resin in a liquid state, a method of heating and curing, and a method of dripping a thermoplastic resin melted by heating Then, a method of solidifying by cooling, filling a resin material in a solid state into the inner part of the weir,
After being heated and melted, the resin protective layer can be formed by a method of solidifying or the like.

The weir-like material may be usually provided on the periphery of the base material or near the periphery and over the entire periphery. However,
When mounting optical components such as an optical connector, an optical module, and an optical device near the periphery of the base material, the optical components serve as weirs, so that the optical components are mounted. It is not necessary to provide a weir-like material in the area where the weir is located.

The material constituting the weir-like material is not particularly limited, and may be suitably selected according to the application purpose 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 inside does not flow out.

In the second method for producing the optical connection component of the present invention, first, an adhesive support having an adhesive layer on a support having a peelable two-dimensional plane is used. On top, the optical fibers are wired in the desired pattern. At this time, the end of the optical fiber needs to be pulled out so as to be a terminal end for optical connection with an optical connector or the like. Next, a flexible first resin protective layer is formed on the wired optical fiber, and the optical fiber is fixed. The formation of the resin protective layer can be performed by providing a weir-like material as described in the first method. Thereafter, the peelable support on the back surface is peeled off, and a second flexible material made of the same or different resin material as the first resin protective layer is formed on the exposed adhesive layer.
To form a resin protective layer. The second resin protective layer is most easily formed by providing a weir-like material, but it can also be formed by applying a coating method such as a dispenser or a spray.

In the second manufacturing method, the first
After forming the resin protective layer and fixing the first optical fiber, the peelable support on the back surface is peeled off, and the exposed adhesive layer has an end portion for optically connecting to the end of the optical fiber. A plurality of other optical fibers are wired as described above, and then a second flexible fiber made of the same or different resin material as the first resin protective layer is provided on the wired optical fibers.
May be formed. Thereby, as shown in FIG. 4, it is possible to manufacture an optical connection component in which each optical fiber is fixed by two resin protective layers.

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

[0029]

The present invention will be described below with reference to examples.
The present invention is not limited to this. Example 1 An adhesive sheet (size 210 mm × 297 mm) was prepared by applying an acrylic adhesive to a thickness of 100 μm on a silicone-based release film having a thickness of 75 μm.
To this, an optical fiber core wire (Furukawa Electric Co., Ltd., carbon coated optical fiber, 250 μm diameter) was wired per port (portion where the optical fiber was taken out from the optical connection member) as follows. That is, 16 optical fibers were arranged in parallel at a pitch of 300 μm, and eight ports (each port was composed of 16 optical fibers) were formed on both sides of the short side of the adhesive sheet at a pitch of 25 mm. Each optical fiber is wired from one short side to the other short side of the adhesive sheet, and the wiring to each port on both sides is designed by a desired free access wiring (128
And the maximum number of overlaps was three by adjusting the wiring of the optical fiber.

Thereafter, a non-woven fabric made of polypropylene fiber (P100SW-00X, manufactured by Tonen Tapils Co., Ltd., P100SW-00X) was used for a width of 5 m around the adhesive sheet on which the optical fibers were wired.
m, a weir-like material having a thickness of 1 mm was formed. Next, a silicone gel coating solution (manufactured by Dow Corning Toray Co., Ltd.)
SE-1880) was dropped, and the silicone gel was cured at 120 ° C. for 1 hour to form a resin protective layer, and the optical fiber was fixed while being buried in the resin protective layer.
Next, the silicone-based release film of the pressure-sensitive adhesive sheet on the back surface was peeled off, and a second resin protective layer was formed on the exposed adhesive layer. That is, a nonwoven fabric made of polypropylene fiber (PO15SW-00X, manufactured by Tonen Tapils)
To form a weir with a width of 5 mm and a thickness of 0.2 mm,
A silicone gel coating solution (SE-1880, manufactured by Dow Corning Toray Co., Ltd.) was dropped on the inside, and the silicone gel was cured at 120 ° C. for 1 hour to form a second resin protective layer. A 1.2 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 optical wiring board was flexible and flexible because it did not use a rigid base film and was formed only of silicone gel. Therefore, even when a very fragile optical fiber whose surface has been stripped to be connected to an optical connector and whose coating has been removed is connected to the MU connector, the uncoated optical fiber must be connected to the MU connector without being damaged. Was completed.
Further, when this optical wiring board was used for connection between boards in a rack in a very limited space, the optical wiring board was flexible and flexible, so it was attached to the optical wiring board. The connection between the optical connector and the optical connector drawn out of the wiring in the board could be easily implemented. Further, the optical wiring board is bent at a radius of 15 mm with a radius of 18 mm.
When the optical wiring board was bent at 0 °, it could be easily bent without breaking the optical wiring board, and no damage was left on the optical fiber. In addition, about the produced optical wiring board, 75 degreeC, 9
High temperature and humidity test left for 5000 hours at 0% RH, and-
When a temperature cycle test was performed 500 times from 40 ° C. to 75 ° C., both changes and fluctuations in optical loss were 0.2 dB or less, and it was found that they could be used sufficiently as optical connection parts.

Example 2 An epoxy resin paint comprising an epoxy resin (Epolite 400E, manufactured by Kyoei Yushi Co., Ltd.) and an equivalent amount of a curing agent (Epomate B002, manufactured by Yuka Shell Co., Ltd.) was prepared, and silicone having a thickness of 75 μm was prepared. Coating on a release film by roll coating
After curing for a time, the silicone-based release film was peeled off to produce a flexible epoxy resin layer having a thickness of 50 μm.

This epoxy resin layer and an adhesive sheet coated with an acrylic adhesive so as to have a thickness of 100 μm on a previously prepared silicone-based release film having a thickness of 75 μm are adhered to each other, and the silicone-based release film is peeled off. Thus, a laminate (size 210 mm × 297 mm) composed of an epoxy resin layer and an acrylic pressure-sensitive adhesive layer was produced. On the acrylic pressure-sensitive adhesive layer of this laminate, each port is composed of eight optical fibers.
Connector (8-fiber optical connector), the total number of all optical fibers is 64, and the maximum overlap of optical fibers is 2
Except for being a book, an optical fiber was wired in the same manner as in Example 1. Next, a resin protective layer was formed in the same manner as in Example 1 to produce an optical wiring board having a thickness of 600 μm. However, in place of the polypropylene non-woven fabric in Example 1, a nylon non-woven fabric having a width of 5 mm and a thickness of 500 μm (manufactured by Tonen Tapils Co., Ltd., NO50SS-00X) was used. ), An epoxy resin and an equivalent curing agent (Epomate B002, manufactured by Yuka Shell Co., Ltd.) were used to cure the epoxy resin at 150 ° C. for 1 hour.

Thereafter, an MT connector was connected to an end of the drawn optical fiber to produce an optical wiring board as a final product. This optical wiring board was made of only a flexible epoxy resin without using a rigid base film, and thus was flexible and flexible. Therefore, even when 8 cores of the very fragile optical fiber whose ends are treated to be connected to the optical connector and whose coating is removed are simultaneously connected to the MT connector at eight cores, the MT fiber can be connected to the MT connector without damaging the coated optical fiber. I was able to connect. Further, since this optical wiring board is flexible and flexible, when it is used for connection between boards in a rack in a very limited space, the optical wiring board is connected to an optical connector attached to the optical wiring board. The connection with the optical connector drawn from the wiring in the board could be easily performed. Further, when the optical wiring board manufactured as described above was bent at 180 ° with a curvature having a radius of 20 mm, no damage was left on the optical wiring board and the optical fiber.

The loss of all the connected optical fibers was measured.
It was 6 dB or less. For the produced optical wiring board, 75
When a high-temperature and high-humidity test left for 5000 hours at 90 ° C. and 90% RH and a temperature cycle test for 500 times at −40 ° C. to 75 ° C. were performed, both changes and fluctuations in optical loss were 0.2 dB.
It was as follows, and it turned out that it can fully be used as an optical connection part.

Example 3 In Example 2, instead of using a pressure-sensitive adhesive sheet, an ultraviolet curable pressure-sensitive adhesive (Viscotac PM-654, manufactured by Osaka Organic Chemical Industry Co., Ltd.) was used as a coating liquid for forming an adhesive layer, and an epoxy resin layer was used. Apply with a dispenser on top, 20m
An optical connection part was produced in the same manner as in Example 2, except that a laminated body was obtained by irradiating ultraviolet rays of W / cm ² for 2 minutes to provide an adhesive layer having a thickness of 50 μm.

Thereafter, an MT connector was connected to an end of the drawn optical fiber to produce an optical wiring board as a final product. This optical wiring board was made of only a flexible epoxy resin without using a rigid base film, and thus was flexible and flexible. Therefore, even in the case where 8 cores are simultaneously connected to the MT connector with the very fragile optical fiber whose end is treated to be connected to the optical connector and the coating is removed, the MT fiber can be connected to the MT connector without damaging the coated optical fiber. I was able to connect. Further, since this optical wiring board is flexible and flexible, when it is used for connection between boards in a rack in a very limited space, the optical wiring board is connected to an optical connector attached to the optical wiring board. The connection with the optical connector drawn from the wiring in the board could be easily performed. Further, the optical wiring board produced as described above is
When bent 180 ° at a curvature of 0 mm, no damage was left on the optical wiring board and the optical fiber.

It should be noted that, for the optical wiring board thus produced, 75%
When a high-temperature and high-humidity test was performed at 90 ° C. and 90% RH for 5000 hours, the change in light loss was 0.20 dB or less.
It turned out that it can be used enough as an optical connection part. When the optical loss was measured, it was 0.75 dB or less including the connection loss of the optical connector.

Example 4 In Example 1, instead of the silicone gel coating solution,
Silicone rubber coating solution (YE-5, manufactured by Toshiba Silicone Co., Ltd.)
822), and an optical wiring board was produced in the same manner as in Example 1 except that the composition was cured at 100 ° C. for 1 hour.

Thereafter, an MT connector was connected to the end of the drawn optical fiber to produce an optical wiring board as a final product. This optical wiring board was flexible and flexible because it did not use a rigid substrate film and was formed only of flexible silicone rubber. Therefore, a very fragile optical fiber, which has been subjected to an end face treatment to be connected to the optical connector and having the coating removed, is connected to the MT connector by 8 mm.
Even in the case of connecting the cores at the same time, the optical fiber from which the coating was removed could be connected to the MT connector without being damaged. Further, since this optical wiring board is flexible and flexible, when it is used for connection between boards in a rack in a very limited space, the optical wiring board is connected to an optical connector attached to the optical wiring board. The connection with the optical connector drawn from the wiring in the board could be easily performed. Further, the optical wiring board produced as described above was
When bent 180 ° at a curvature of 5 mm, no damage was left on the optical wiring board and the optical fiber.

Incidentally, regarding the manufactured optical wiring board, 75%
When a high-temperature and high-humidity test left for 5000 hours at 90 ° C. and 90% RH and a temperature cycle test for 500 times at −40 ° C. to 75 ° C. were performed, the change in light loss was 0.30 dB or less. It turned out to be usable. When the optical loss was measured, it was 0.85 dB or less including the connection loss of the optical connector.

Example 5 A silicone rubber coating solution (YE manufactured by Toshiba Silicone Co., Ltd., YE) was coated on a polyethylene terephthalate film having a thickness of 75 μm.
-5822), applied by roll coating, cured at 100 ° C. for 1 hour, and then peeled off from the polyethylene terephthalate film to give a film thickness of 100 μm.
m of the silicone rubber layer was formed.

On this silicone rubber layer, a silicone-based pressure-sensitive adhesive coating solution (SD45, manufactured by Dow Corning Toray Co., Ltd.)
90 / BY24-741 / SRX212 / toluene = 1
(00 / 1.0 / 0.9 / 50 parts by weight), applied by wire bar coating, dried at 100 ° C. for 3 minutes, and formed an adhesive layer having a thickness of 50 μm. A laminate comprising a protective layer and an adhesive layer was obtained.

After an optical fiber was wired on the adhesive layer of the obtained laminate in the same manner as in Example 1, a polypropylene nonwoven fabric (P100SW- manufactured by Tonen Tapils Co., Ltd.) was placed around the laminate where the optical fiber was wired. 00X) to prepare a weir-like material having a width of 5 mm and a thickness of 1 mm, and a silicone rubber coating solution (TSE399, manufactured by Toshiba Silicone Co., Ltd.) was dropped inside the weir-like material.
The silicone rubber was cured at 25 ° C. for 24 hours to form a resin protective layer, thereby producing an optical connection part having a thickness of 1.1 mm.

Thereafter, an MT connector was connected to an end of the drawn optical fiber to produce an optical wiring board as a final product. This optical wiring board was flexible and flexible because it did not use a rigid substrate film and was formed only of flexible silicone rubber. Therefore, a very fragile optical fiber, which has been subjected to an end face treatment to be connected to the optical connector and having the coating removed, is connected to the MT connector by 8.
Even in the case of connecting the cores at the same time, the optical fiber from which the coating was removed could be connected to the MT connector without being damaged. Further, since this optical wiring board is flexible and flexible, when it is used for connection between boards in a rack in a very limited space, the optical wiring board is connected to an optical connector attached to the optical wiring board. The connection with the optical connector drawn from the wiring in the board could be easily performed. Further, the optical wiring board produced as described above was
When bent 180 ° at a curvature of 5 mm, no damage was left on the optical wiring board and the optical fiber.

It should be noted that 75% of the produced optical wiring board was used.
When a high-temperature and high-humidity test left for 5000 hours at 90 ° C. and 90% RH and a temperature cycle test for 500 times at −40 ° C. to 75 ° C. were performed, both changes and fluctuations in optical loss were 0.2 dB or less. It turned out to be usable enough.

Example 6 A pressure-sensitive adhesive sheet (size 210 mm × 297 mm) was prepared by coating an acrylic pressure-sensitive adhesive to a thickness of 100 μm on a silicone-based release film having a thickness of 75 μm. Similarly, 128 optical fibers were wired for free access.

Thereafter, a non-woven fabric made of polypropylene fiber (P100SW-00X, manufactured by Tonen Tapyrus Co., Ltd.) having a width of 5 m was formed around the adhesive sheet on which the optical fibers were wired.
m, a weir-like material having a thickness of 1 mm was formed. Next, a silicone rubber coating solution (TSE, manufactured by Toshiba Silicone Co., Ltd., TSE
399) was dropped, and the silicone rubber was cured at 25 ° C. for 24 hours to form a first resin protective layer, and the optical fiber was fixed while being buried in the resin protective layer. Next, the silicone-based release film of the pressure-sensitive adhesive sheet on the back surface was peeled off, and 128 optical fibers were freely accessed on the exposed adhesive layer in the same manner as described above. Then, a non-woven fabric made of polypropylene fiber (Tonen Tapils, P.R.
100SW-00X) to form a dam having a width of 5 mm and a thickness of 1 mm. Next, a silicone rubber coating solution (YE-5822, manufactured by Toshiba Silicone Co., Ltd.) was dropped on the inside thereof, and the silicone rubber was cured at 100 ° C. for 1 hour to form a second resin protective layer. An optical wiring board of 2 mm 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.

This optical wiring board was flexible and flexible because it did not use a rigid substrate film and was formed only of silicone rubber. Therefore, even when a very fragile optical fiber whose surface has been stripped to be connected to an optical connector and whose coating has been removed is connected to the MU connector, the uncoated optical fiber must be connected to the MU connector without being damaged. Was completed.
Further, when this optical wiring board was used for connection between boards in a rack in a very limited space, the optical wiring board was flexible and flexible, so it was attached to the optical wiring board. The connection between the optical connector and the optical connector drawn out of the wiring in the board could be easily implemented. Further, this optical wiring board is 18 mm in radius of curvature of 25 mm.
When the optical wiring board was bent at 0 °, it could be easily bent without breaking the optical wiring board, and no damage was left on the optical fiber.

It is to be noted that, for the produced optical wiring board, 75
When a high-temperature and high-humidity test left for 5000 hours at 90 ° C. and 90% RH and a temperature cycle test for 500 times at −40 ° C. to 75 ° C. were performed, both changes and fluctuations in optical loss were 0.2 dB.
It was as follows, and it turned out that it can fully be used as an optical connection part.

[0051]

As described above, in the optical connection component of the present invention, a plurality of wired optical fibers are fixed in a state of being buried in a flexible resin protective layer, and a rigid base material is provided. Is absent and therefore flexible and flexible. That is, the optical connection component of the present invention is composed of only the wired optical fiber and the resin protective layer, or the optical fiber, the adhesive layer and the resin protective layer, and is a mylar or Kapton that is flexible but does not stretch. Since the substrate film is not provided on both sides of the surface, the flexibility of the optical connection component itself is very high. Therefore, even when the end of the optical fiber that has been pulled out from the optical connection component and has been subjected to the end face treatment for connection with the optical component and the coating has been removed is connected to an optical component such as an optical connector, the coating is removed. A very fragile optical fiber can be easily connected to an optical component such as an optical connector without damaging the optical fiber, and the yield in the production of an optical connection component is significantly improved as compared with the prior art. Also, in connection between boards in a rack in a very limited space, due to its flexibility, an optical component such as an optical connector attached to this optical connection component and an optical connector drawn out from wiring in the board. Can easily be connected to optical components, and workability is remarkably improved. Further, there is no need to prepare a long tab for facilitating the connection, the manufacture of the component is easy, and the mounting does not take up a large space.

[Brief description of the drawings]

FIG. 1 is a partially broken plan view of an example of an optical connection component of the present invention.

FIG. 2 is a cross-sectional view of the optical connection component of FIG.

FIG. 3 is a sectional view of another example of the optical connection component of the present invention.

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

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Lower resin protective layer, 2 ... Upper resin protective layer, 3 ... Adhesive layer, 4 ... Optical fiber, 5 ... Termination part, 6 ... Optical parts, such as an optical connector and an optical module, 7 ... Weir.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Tatsushi Kobayashi 3-1 Yosoba Tomoe-cho, Shizuoka City, Shizuoka Prefecture Inside the Technical Research Laboratory of Hamakawa Paper Co., Ltd. (72) Koichi Arishima 3-chome Nishishinjuku, Shinjuku-ku, Tokyo 19-2 Nippon Telegraph and Telephone Corporation (72) Inventor Mamoru Hirayama 3-19-2 Nishi-Shinjuku, Shinjuku-ku, Tokyo F-Term in Japan Telegraph and Telephone Corporation 2H037 AA01 BA35 CA00 DA04 DA17 DA35 DA37 5F041 AA41 AA42 EE01 EE06 FF14 5F088 BB01 JA14

Claims (9)

[Claims] 1. An optical fiber comprising a plurality of two-dimensionally wired optical fibers having an end portion for optically connecting to an end portion, and a flexible resin protective layer, wherein the optical fiber is formed of a resin protective layer. An optical connection component fixed in a state buried in a layer. 2. A plurality of two-dimensionally wired optical fibers each having an end portion for optically connecting to an end portion, and two flexible resin protective layers laminated via an adhesive layer. Wherein the optical fiber is fixed while being buried in at least one of the two resin protective layers. 3. The optical connection component according to claim 1, wherein the resin protective layer is formed of a gel-like or rubber-like organic material. 4. The optical connection component according to claim 1, wherein the resin protective layer is formed of a curable resin having flexibility. 5. The optical connection component according to claim 1, wherein the resin protective layer is formed of a thermoplastic resin having flexibility. 6. A plurality of optical fibers having an end portion for optically connecting to an end of an optical fiber is provided on the adhesive layer of a laminate comprising a resin protective layer having flexibility and an adhesive layer. Wiring, and then forming a flexible resin protective layer made of the same or different resin material as the resin protective layer on the optical fiber, and fixing the optical fiber, producing an optical connection component. Method. 7. A laminate in which a resin protective layer is formed on a support having a peelable two-dimensional plane, and a flexible resin protective layer formed by removing the support is formed on the resin protective layer. The method for producing an optical connection component according to claim 6, wherein the method is produced by forming an adhesive layer. 8. A pressure-sensitive adhesive support having an adhesive layer on a support having a two-dimensional peelable plane,
A plurality of optical fibers are wired so as to have an end portion for optical connection to an end of the optical fiber, and a flexible first resin protective layer is formed on the wired optical fiber to fix the optical fiber. Then, the peelable support on the back surface is peeled off, and a flexible second resin protective layer made of the same or different resin material as the resin protective layer is formed on the exposed adhesive layer. Method for producing an optical connecting part. 9. An adhesive support having an adhesive layer on a support having a peelable two-dimensional plane, on the adhesive layer,
A plurality of optical fibers are wired so as to have an end portion for optical connection to an end of the optical fiber, and a flexible first resin protective layer is formed on the wired optical fiber to fix the optical fiber. After that, the peelable support on the back surface is peeled off, and a plurality of optical fibers are wired on the exposed adhesive layer so as to have an end portion for optically connecting to the end of the optical fiber. Forming a flexible second resin protective layer made of the same or different resin material as the first resin protective layer on the fiber, and fixing the optical fiber; .