JP2004109237A - Optical wiring board device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enhance reliability and to improve workability by protecting exposed fibers for connecting optical wiring board ends and optical connecting parts by heat shrink tubes etc. <P>SOLUTION: The optical wiring board device comprises a main unit 1 which aligns and fixes the optical fibers 2 through tacky adhesive layers 8 to a substrate surface 7 and are covered by flexible substrate and rigid substrate from the upper part thereof and the optical fibers which are exposed from the ends of the main unit 1. The optical fibers exposed from the board 1 are covered and protected by the tubes or heat shrink tubes 3 and the tubes or the heat shrink tubes 3 is inserted at their one end into the main unit 1 and is stuck thereto. Since such a structure as to integrate the tubes to the board 1 is employed, gaps are not formed between the ends of the optical wiring boards and the ends of the tubes or the heat shrink tubes 3 etc., and as a result , there is no possibility of the breaking of the optical fibers 2 and the yield and workability of the optical wiring board are improved. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an optical wiring board device, and more particularly, to an optical wiring board device used for a high-speed communication device or an information processing device using an optical circuit such as an optical element, an optical component, an optical circuit board, and an optical circuit device. About.
[0002]
[Prior art]
2. Description of the Related Art In recent years, optical fiber cords using optical fibers as signal transmission lines have been frequently used with the advancement of communication devices. However, when a large number of optical fiber cords are connected to the front or rear surface of the device, the bundle of optical fiber cords occupies a large space, and at present, problems such as storability and incorrect connection occur. In order to solve these problems, an optical wiring board has been used (for example, see Patent Document 1).
[0003]
This optical wiring board has a structure in which at least one optical fiber strand arranged in an arbitrary shape is covered on a base material coated with an adhesive or the like with a resin or a flexible base material from the upper surface thereof. In addition, an optical fiber for connecting to an optical connection component such as an optical connector (hereinafter referred to as an optical connector) is exposed from an end of the optical wiring board.
[0004]
This optical fiber strand does not have a protective material around the optical fiber as compared with the optical fiber cord and is very thin. When attaching an optical connector or the like to an optical fiber exposed from the end of the optical wiring board, it is necessary to polish the end face of the optical connector or the like so as not to cause loss of light.
[0005]
When performing the polishing operation, the optical connector or the like attached to the optical fiber exposed from the end of the optical wiring board must be fixed to a polishing jig and then subjected to polishing. In this case, between the optical wiring board and the optical connector or the like, the optical fiber is broken unless careful attention is paid to the mounting of the polishing jig or the polishing process on the optical fiber. There is fear.
[0006]
Also, when the work of attaching the optical wiring board to the apparatus after the polishing is completed, the optical wiring board is attached and detached by attaching and detaching the optical connector or the like attached to the optical fiber exposed from the end of the optical wiring board. The optical fiber between the cable and the optical connector is easily broken. If the optical fiber in this portion breaks, the optical connector or the like is reattached, or if there is no remaining optical fiber length enough to reattach the optical connector or the like, the optical wiring board cannot be used.
[0007]
[Patent Document 1]
JP 2001-141936 A
[Problems to be solved by the invention]
As described above, since the optical fiber bare exposed from the end of the optical wiring board is easily broken, there is a problem that the yield of the optical wiring board is reduced, and the workability in attaching and detaching the optical wiring board to and from the optical wiring apparatus is reduced. Was. Furthermore, optical wiring devices are required to have high flame retardancy. However, for the main body of the optical wiring board, a flame-retardant base material such as polyimide can be used, but since the optical fiber does not have a flame-retardant coating material, the entire optical wiring board is completely However, there is a problem that high flame retardancy cannot be obtained.
[0009]
Conventionally, in order to solve these problems, the exposed optical fiber is covered with a tube, a heat-shrinkable tube or the like for protection. However, a gap is formed between the end of the optical wiring board and the end of the tube or the heat-shrinkable tube. As described above, when handling the optical fiber, the load is applied to the optical fiber in this gap. In this case, the optical fiber is easily broken at this point, and a gap is formed between the end of the optical wiring board and the end of the tube or the heat-shrinkable tube even in the flame retardancy. Therefore, the problem that high flame retardancy cannot be obtained still remains.
[0010]
The present invention has been made in view of such a problem, and its object is to improve the yield of an optical wiring board in mounting and polishing of an optical connection component, to improve workability in a removal work, and to shorten work time. It is an object of the present invention to provide an optical wiring board device capable of shortening the length of the wiring and preventing an accident of wire breakage.
[0011]
[Means for Solving the Problems]
In order to achieve such an object, the invention according to claim 1 provides at least one optical fiber strand arranged in an arbitrary shape on a substrate coated with an adhesive from an upper surface. An optical fiber exposed from the main body in an optical wiring board device having a main body having a structure covered with a resin, a flexible base or a rigid base, and an optical fiber exposed from the main body; The wire is covered and protected by a tube or a heat-shrinkable tube, and one end of the tube or the heat-shrinkable tube is inserted into and fixed to the main body.
[0012]
According to a second aspect of the present invention, in the first aspect of the present invention, a cutout portion is provided in the main body, and the optical fiber bare from the cutout portion is provided with the tube or the heat pipe inside the cutout portion. The shrinkable tube is inserted to protect the cover, and the upper surface and the lower surface of the cutout portion are covered with a flexible base material or a rigid base material that is slightly larger than the cutout portion.
[0013]
According to a third aspect of the present invention, in the first or second aspect, the optical fiber exposed from the main body is a single-core fiber or a multi-core fiber. .
[0014]
According to a fourth aspect of the present invention, in the first, second or third aspect, the optical fiber strand aligned and fixed to the main body is a single-mode optical fiber or a multi-mode optical fiber. It is characterized by the following.
[0015]
The invention according to claim 5 is the invention according to any one of claims 1 to 4, wherein the member for covering and protecting the optical fiber strand aligned and fixed to the main body has a flame-retardant tube or It is characterized by using a heat-shrinkable tube.
[0016]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. The embodiment described here is merely an example, and it goes without saying that various changes or improvements can be made without departing from the spirit of the present invention.
[0017]
1 and 2 are configuration diagrams for explaining an embodiment of the optical wiring board device of the present invention. FIG. 1 is a top view, and FIG. 2 is a cross-sectional view taken along line A'-A of FIG. In the figure, reference numeral 1 denotes an optical wiring board as a main body, 2 denotes an optical fiber, 3 denotes a tube or a heat-shrinkable tube, 4 denotes an optical connection part, 5 denotes a cutout, 6 denotes a sheet, 7 denotes a base material, Reference numeral 8 denotes an adhesive layer.
[0018]
In the optical wiring board device of the present invention, the optical fiber 2 is aligned and fixed to the substrate 7 via the adhesive layer 8, and is covered from above with a flexible substrate or a rigid substrate. It comprises a main body 1 having a configuration and an optical fiber exposed from an end of the main body 1. The optical fiber exposed from the optical wiring board 1 is covered and protected by a tube or a heat-shrinkable tube 3, and one end of the tube or the heat-shrinkable tube 3 is inserted into the main body 1 and fixed. As described above, the optical wiring board apparatus shown in FIG. 1 uses the flame-retardant tube, the heat-shrinkable tube, the sheet, and the like to protect the optical fiber 2 that connects the optical wiring board 1 and the optical connection component 4. The state is shown.
[0019]
In the optical wiring board device of the present invention, a notch 5 is formed in the optical wiring board 1 and a tube or a heat-shrinkable tube 3 or the like is used to protect the optical fiber 2 using a flame-retardant tube or a heat-shrinkable tube 3. The heat-shrinkable tube 3 and the like are inserted, and sheets 6 and the like are stuck to the optical wiring board main body 1 from both sides so as to cover the cutout portion 5. Are inserted into the optical wiring board 1 so as to be integrated with the optical wiring board 1.
[0020]
Since the structure is integrated with the optical wiring board 1, there is no gap between the end of the optical wiring board 1 and the end of the tube or the heat-shrinkable tube 3 as described above. The possibility of breaking the wire 2 is eliminated, the yield of the optical wiring board is improved, the workability is improved, and the use of a flame-retardant tube or a heat-shrinkable tube makes it possible to impart flame retardancy to the optical fiber portion, thereby improving reliability. Leads to the improvement of
[0021]
3 and 4 are configuration diagrams for explaining another embodiment of the optical wiring board device of the present invention. FIG. 3 is a top view, and FIG. 4 is a sectional view taken along line B'-B of FIG. In the drawing, reference numeral 9 denotes a weir-like object, and reference numeral 10 denotes a resin or the like. Components having the same functions as those in FIG. 1 are denoted by the same reference numerals.
[0022]
In the optical wiring board device in this embodiment, the optical fiber 2 is aligned and fixed to the base material 7 via the adhesive layer 8, and a resin protective layer 10 made of a silicone material is formed from above the resin protective layer 10. It is composed of a main body composed of a weir-like object 9 provided for forming the layer 10 and the optical fiber 2 exposed from the main body. As described above, the optical wiring board device shown in FIG. 3 uses the flame-retardant tube or the heat-shrinkable tube 3 to protect the optical fiber 2 connecting the optical wiring board 1 and the optical connection parts 4. The state is shown.
[0023]
In the optical wiring board device of this embodiment, the optical fiber 2 is inserted into the weir-like material 9 provided for forming the resin protective layer 10 by using a tube or a heat-shrinkable tube 3 so as to protect it. In this case, there is no gap between the end of the optical wiring board 1 and the end of the tube or the heat-shrinkable tube 3. Eliminating the risk of breaking the wire 2, improving the yield and workability of the optical wiring board, and providing flame retardancy to the optical fiber portion by using a flame-retardant tube, a heat-shrinkable tube, etc. It leads to improvement of sex.
[0024]
[Example 1]
FIG. 5 is a view showing a specific embodiment 1 of the optical wiring board device of the present invention, wherein the optical fiber having eight optical fibers from the terminal ends 11 to 18 on the left in the figure is a total of 64 optical fibers. The optical wiring board 123 has a function of shuffling the wires 59 to 122 so as to cross over to the right end portions 19 to 26 in the figure by three-dimensionally crossing in the optical wiring board main body.
[0025]
The structure of the optical wiring board main body 123 is such that an adhesive is applied onto a polyimide sheet having a thickness of 125 μm, an optical fiber having an outer diameter of 250 μm is laid out, and the polyimide sheet is again covered with a polyimide sheet having a thickness of 125 μm. It is. In order to cover and protect the optical fiber wires exposed from the main body portion 123, cutout portions 43 to 58 are formed in the optical wiring board main body portion 123, and the heat-shrinkable tubes 27 to 42 (which cover and protect the optical fiber wires). An electron beam crosslinked soft flame-retardant polyolefin resin (inner diameter before shrinkage of 3 mm) was inserted and shrunk, and then the notches 43 to 58 were covered with a 125 μm-thick polyimide sheet from the upper and lower surfaces.
[0026]
An 8-core MT optical connector as optical connection parts 11 to 26 was connected to both ends. By covering and protecting the optical fiber with the heat-shrinkable tubes 27 to 42 of the electron beam crosslinked soft flame-retardant polyolefin resin, the breakage of the optical fiber is eliminated, and the optical fiber is protected. It is easier to handle than when the optical fiber is in the bare state, which leads to improved workability and reliability.
[0027]
Also, by inserting the heat-shrinkable tubes 27 to 42 of the electron beam crosslinked soft flame-retardant polyolefin resin to the optical wiring board main body, there is no gap between the end of the optical wiring board and the heat-shrinkable tube end. The optical fiber was not broken. Further, by using the flame-retardant heat-shrinkable tube, flame retardancy can be imparted to the optical fiber portion, leading to improvement in reliability.
[0028]
Also, when the loss of the optical wiring board was measured, it was 0.5 dB or less, which is equivalent to the insertion loss of the optical connector. Therefore, there is no increase in loss due to the above-described cover protection structure, and the optical characteristics are highly practical. I understand.
[0029]
[Example 2]
FIG. 6 is a view showing a specific embodiment 2 of the optical wiring board device of the present invention, which has a function of separating two optical fiber strands 135 to 137 and 138 to 141 made into a tape into eight ports. 2 shows an optical wiring board 142 having the same.
[0030]
The structure of the optical wiring board device 142 is such that an adhesive is applied on a polyimide sheet having a thickness of 125 μm, an optical fiber is wired, and a weir 143 is provided therearound. The resin was poured. At this time, an optical fiber strand having an outer diameter of 250 μm that separates the optical fiber from the 4-core tape into eight ports is covered and protected by polyester elastomer tubes 144 to 151, and the polyester elastomer tubes 144 to 151 are inserted up to the weir 143. I let it.
[0031]
The optical connection parts of the 4-core MT optical connectors 132 to 133 and the MU optical connectors 124 to 131 were connected to the optical fiber formed into a 4-core tape and the eight optical fiber wires covered and protected by the polyester elastomer tubes 144 to 151, respectively. By inserting the polyester elastomer tubes 144 to 151 up to the weir-like object 143, there was no gap between the end of the optical wiring board and the end of the polyester elastomer tube, and the optical fiber was not broken.
[0032]
In addition, since there is no need to fear breakage, handling becomes easier, which leads to improvement in workability and reliability. Further, by using a flame-retardant polyester elastomer tube, flame retardancy can be imparted to the optical fiber portion, leading to improvement in reliability. Also, when the loss of the optical wiring board was measured, it was as good as 0.5 dB or less including the connection loss of the optical connector.
[0033]
As described above, specific embodiments of the present invention have been described. However, it is obvious that the present invention is not limited to the above-described embodiments, and each embodiment can be appropriately changed within the scope of the technical idea of the present invention. is there.
[0034]
【The invention's effect】
As described above, according to the present invention, an optical fiber wire connecting an optical wiring board and an optical connection component is covered and protected with a tube, a heat-shrinkable tube and the like, and a tube or a heat-shrinkable tube or the like is provided on the optical wiring board main body. By inserting the optical fiber and integrating it with the optical wiring board, it is possible to improve the yield of the optical wiring board by attaching optical connection parts, polishing, improve the workability in attaching and detaching to the optical wiring device, and shorten the work time And prevention of wire breakage accidents. Further, the coating material of the ordinary optical fiber does not have flame retardancy, but by using a flame-retardant tube or a heat-shrinkable tube, there is an effect that flame retardancy can be imparted to the optical fiber portion. .
[Brief description of the drawings]
FIG. 1 is a configuration diagram for explaining an embodiment of an optical wiring board device of the present invention, and is a diagram showing a top view.
FIG. 2 is a sectional view taken along line A'-A of FIG.
FIG. 3 is a configuration diagram for explaining another embodiment of the optical wiring board device of the present invention, and is a diagram showing a top view.
FIG. 4 is a sectional view taken along line B′-B.
FIG. 5 is a view showing a specific embodiment 1 of the optical wiring board device of the present invention.
FIG. 6 is a view showing a specific embodiment 2 of the optical wiring board device of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Optical wiring board 2 Optical fiber 3 Tube or heat shrink tube 4 Optical connection parts 5 Notch 6 Sheet 7 Base material 8 Adhesive layer 9 Barrier material 10 Resin etc. 11-26 Optical connection parts 27-42 Tube 43-58 Notch 59-122 Optical fiber 123 Optical wiring board 124-133 Optical connection part 134-141 Optical fiber 142 Optical wiring board 143 Weir 144-151 Tube or heat shrink Tube, etc.

Claims (5)

A main body having a structure in which at least one optical fiber strand arranged in an arbitrary shape on the base material coated with the adhesive is covered with a resin, a flexible base material, or a rigid base material from the upper surface; In an optical wiring board device having an optical fiber exposed from the main body,
An optical wiring board, wherein an optical fiber exposed from the main body is covered and protected with a tube or a heat-shrinkable tube, and one end of the tube or the heat-shrinkable tube is inserted into and fixed to the main body. apparatus. A cutout portion is provided in the main body portion, and the tube or the heat-shrinkable tube is inserted into the cutout portion of the optical fiber exposed from the cutout portion to cover and protect the optical fiber, and the upper surface and the lower surface of the cutout portion, The optical wiring board device according to claim 1, wherein the optical wiring board device is covered with a flexible base material or a rigid base material that is slightly larger than the cutout portion. The optical wiring board device according to claim 1, wherein the optical fiber exposed from the main body is a single-core fiber or a multi-core fiber. 4. The optical wiring board device according to claim 1, wherein the optical fiber line aligned and fixed to the main body is a single-mode optical fiber or a multi-mode optical fiber. The optical wiring board device according to any one of claims 1 to 4, wherein a flame-retardant tube or a heat-shrinkable tube is used as a member for covering and protecting the optical fiber wires aligned and fixed to the main body. .

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