JPH11211918A - Holding structure for optical fiber, production jig therefor and production for the same structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the area to be occupied, and to enable stable holding without the occurrence of micro-bending or the like by laminating plural optical fibers at the same position in thickness-wise direction orthogonal with a plane circumferentially arranged while being deviated in the manner of plane so as not to generate crossing. SOLUTION: One long optical fiber 1 is integrally held by a sheet-shaped fixing material 2 so as not to deform its circumferential shape. The optical fibers 1 are circumferentially arranged in the shape of track while being mutually deviated in the manner of plane so as not to generate the mutual crossing of one fiber but in the thickness-wise direction of the fixing material 2 orthogonal with the circumferential plane, two optical fibers are laminated at the same position to become two layers. As the fixing material 2, for example, a silicon resin is applied since it has the merit of stability with no decomposition for a long time. Urethane rubbers, UV resins or epoxy resins can be used as well. Further, polyester resins or polypropylene resins can be used as well.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for holding one long optical fiber collectively, a manufacturing jig therefor, and a method of manufacturing the holding structure.

[0002]

2. Description of the Related Art Generally, in a device such as an optical fiber amplifier or an optical fiber gyroscope, a long optical fiber is used as an element.

For example, in an optical fiber amplifier, an amplification optical fiber doped with a rare earth element such as Er is provided in the core of the optical fiber. The optical amplification factor of the amplification optical fiber depends on the concentration of the doped element and the optical density. It depends on the so-called concentration length product, which is the product of the fiber length.

Therefore, in order to obtain a large amplification rate,
The concentration product may be set to a large value.In this case, however, if the concentration of the element to be doped is unnecessarily high, inconveniences such as vitrification may occur. The length is set to be somewhat longer.

As described above, when assembling a device using long optical fibers, it is necessary to collectively store the optical fibers in the device.

For this reason, conventionally, processing such as winding a long optical fiber around a reel, or laying the optical fiber in a device and mounting the same is performed.

However, when such a reel is used, dead capacity occurs due to the thickness of the central hollow portion of the reel and the thickness of the flange, and the mounting density is reduced. Further, since a high-strength material is used for the reel, it cannot have flexibility.

When the optical fiber is routed inside the apparatus, the optical fiber is hooked on a hook portion or the like at a predetermined pitch while maintaining an appropriate curvature so as not to increase bending loss or disperse. It has to be done and storage is troublesome.

Therefore, in order to avoid such inconvenience, the optical fibers are arranged so that their orbital positions are shifted from each other in a plane, and are sealed and held in a sheet shape with a soft resin or the like. Provided structure
(See Japanese Patent Application No. 6-224908).

According to this structure, there is an advantage that the entire structure is sheet-like, and the structure is thin. Moreover, since a soft resin is used, the structure has flexibility and is easy to mount.

[0011]

However, if the optical fibers are simply arranged with their orbital positions shifted from each other in a plane, the occupied area increases as the optical fibers become particularly long. . Therefore, if the upper limit of the occupied area is determined for a certain area, there is a limit in increasing the mounting density.

Moreover, simply shifting the orbital positions of the optical fibers in a plane causes a local intersection between the optical fibers, and a large bending occurs at the intersection. Loss cannot be achieved sufficiently.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and not only can the entire optical fiber be handled integrally without being separated, but also its occupied area can be reduced even if it is long. Moreover, it is another object of the present invention to enable stable holding without microbending or the like.

[0014]

The present invention employs the following structure in order to solve the above-mentioned problems.

That is, in the optical fiber holding structure according to the first aspect of the present invention, the optical fibers are arranged so as to be shifted from each other in a plane so as not to intersect with each other, and the optical fibers are arranged so as not to cross. In the thickness direction orthogonal to the plane, a plurality of fibers are stacked at the same position, and the optical fibers in this state are integrally held in a sheet shape by a fixing material such as an adhesive or a film.

According to the second aspect of the present invention, in the configuration of the first aspect, the optical fiber is integrally held together with a fixing part such as a washer in a sheet shape.

According to a third aspect of the present invention, in the configuration of the first or second aspect, the optical fibers are arranged in a track shape.

According to a fourth aspect of the present invention, there is provided a jig for manufacturing an optical fiber holding structure according to the present invention, wherein two winding cylindrical members for winding the optical fiber are arranged apart from each other by a predetermined dimension.
A pair of alignment side plate members is provided so as to sandwich the both winding column members up and down, and the thickness of the winding column member sandwiched between the alignment side plate members is a stack of optical fibers. The size is set according to the number.

According to a fifth aspect of the present invention, there is provided a method for manufacturing an optical fiber holding structure according to the present invention, wherein the manufacturing jig according to the fourth aspect is used, and one of the winding column members of the manufacturing jig is provided with an optical fiber. After hooking the intermediate portion, the optical fiber is wound around both winding cylindrical members, and in this state, a fixing material such as an adhesive is filled between the two alignment side plate members to fix the optical fiber. .

[0020]

1 and 2 are perspective views each showing an optical fiber holding structure.

In the optical fiber holding structure shown in FIG. 1, a single long optical fiber 1 is integrally held by a sheet-shaped fixing material 2 so that its orbital shape is not lost.

The optical fibers 1 are arranged in a track shape so as to be shifted from each other in a plane so as not to cross each other. Moreover, the optical fiber 1 has only one layer without being laminated in the thickness direction of the sheet-shaped fixing material 2 orthogonal to the orbiting plane.
(Hereinafter, this is referred to as a single-layer winding).

In the optical fiber holding structure shown in FIG.
Similarly, a single long optical fiber 1 is integrally held by a sheet-shaped fixing material 2 so that its orbital shape is not lost.

The optical fibers 1 are arranged in a track shape so as to be shifted from each other in a plane so as not to cross each other. However, unlike the case of FIG. 1, the optical fibers 1 are fixed at right angles to the surrounding plane. In the thickness direction of the material 2, two layers are laminated at the same position to form two layers (hereinafter, this is referred to as 2 layer).
Called layer winding).

In the examples shown in FIGS. 1 and 2, the optical fiber 1 is circulated only a small number of times for easy understanding. Since the case of a fiber is handled, the fiber is circulated much more times than the case shown in the figure. This is the same in the case of three or more layers described later.

As the fixing material 2, for example, a silicone resin is applied because it has an advantage that it is stable without being deteriorated for a long period of time. For example, urethane rubber, UV resin, epoxy resin Etc. can also be used. Further, a polyester resin, a polypropylene resin, a polyethylene resin, or the like can be used.

In order to manufacture the optical fiber holding structure as shown in FIGS. 1 and 2, for example, a manufacturing jig shown in FIG. 3 is used.

In this manufacturing jig 3, two winding cylindrical members 4a, 4b for winding the optical fiber 1 are arranged at a predetermined distance from each other, and these two winding cylindrical members 4a, 4b are arranged. A pair of alignment side plate members 6a and 6b having an elliptical shape are provided so as to sandwich the upper and lower sides, and one alignment side plate member 6a and both winding column members 4a and 4b are integrally formed. The other alignment side plate member 6b is fixed to the winding column members 4a and 4b by bolts 8 or the like.

Further, in each of the winding cylindrical members 4a and 4b, the thickness T sandwiched between the upper and lower alignment side plate members 6a and 6b is set to a size corresponding to the number of stacked optical fibers 1, and the diameter thereof is The dimensions are set so that excessive stress is not applied when the optical fiber 1 is wound, and there is no problem in the fracture life after shape retention. For example, in the case of the optical fiber 1 having a coating outer diameter of 250 μm, each of the winding cylindrical members 4a and 4b
The diameter is set so as to be about 0 mm.

Next, a manufacturing method for obtaining the optical fiber holding structure shown in FIGS. 1 and 2 will be described.

In order to obtain the structure for holding a single-layered optical fiber shown in FIG. 1, the thickness T of each of the winding column members 4a and 4b of the manufacturing jig 3 shown in FIG. Use one that is set to have a size corresponding to the diameter.

Then, as shown in FIG.
The end portions P1 and P2 are aligned and folded evenly into two,
As shown in FIG. 5 (A), the folded portion P3 is hooked on one of the winding column members of the manufacturing jig 3, for example, 4a.

Next, as shown in FIG. 5B, the two optical fibers generated by the folding are wound around the other winding cylindrical member 4b.

Thereafter, as shown in FIG. 5C, the optical fiber is sequentially wound over the two winding cylindrical members 4a and 4b.

In this manner, the optical fiber 1 has an eight-shaped shape at the beginning of its winding, but thereafter, it is spirally wound. In addition, in this case, the thickness T of the winding cylindrical members 4a and 4b of the manufacturing jig 3 is a dimension corresponding to the diameter of the optical fiber 1, so that the optical fibers 1 are stacked on each other in the thickness T direction. Not to be wound, cylindrical member 4 for winding
It is in a state of being overlapped only in the radial direction of a and 4b.

When the winding operation of the optical fiber 1 is completed, the fixing material 2 is filled between the alignment side plate members 6a and 6b in this state, and the fixing material 2 is cured. As a result, the optical fiber 1 is sealed in the sheet shape with the fixing material 2.

Next, after loosening the bolts 8 of the manufacturing jig 3 and removing the alignment side plate members 6b, the optical fiber 1 integrated with the fixing material 2 is extracted.

In order to make the handling easier, the optical fiber 1 integrated with the fixing material 2 may be laminated with a fixing material such as a film. Further, the holes in the portions where the winding column members 4a and 4b were located may be left hollow, but the fixing material 2 may be further injected to reinforce it by closing it.

On the other hand, in order to obtain the optical fiber holding structure of the two-layer winding shown in FIG. 2, the manufacturing jig 3 shown in FIG.
The thickness T of each of the winding cylindrical members 4a and 4b is
Is used so as to have a dimension corresponding to twice the diameter of the optical fiber 1 (that is, the length of two stacked optical fibers 1).

Then, as shown in FIG. 4, the optical fiber 1 is arranged so as to be evenly folded into two, and the folded portion P3 is formed as shown in FIG. It is hooked on one winding cylindrical member, for example, 4a.

Next, as shown in FIG. 6B, the two optical fibers generated by the folding are wound together around the other winding cylindrical member 4b.

Thereafter, as shown in FIG. 6C, the optical fiber is sequentially wound over the two winding cylindrical members 4a and 4b.

In this manner, the optical fiber 1 has a figure-eight shape at the beginning of its winding, but thereafter, it is spirally wound. Moreover, in this case, the thickness T of the winding cylindrical members 4a and 4b of the manufacturing jig 3 is a size corresponding to twice the diameter of the optical fiber 1, so that the optical fiber 1 is Two cylindrical members 4a and 4b are laminated in the thickness T direction and are multiplexed in the radial direction of the winding cylindrical members 4a and 4b.

When the winding operation of the optical fiber 1 is completed, the fixing material 2 is filled between the alignment side plate members 6a and 6b in this state, and the fixing material 2 is cured. As a result, the optical fiber 1 is sealed in the sheet shape with the fixing material 2.

Next, after loosening the bolt 8 of the manufacturing jig 3 and removing the alignment side plate member 6b, the optical fiber 1 integrated with the fixing material 2 is extracted from the manufacturing jig 3.

In this case, too, in order to make the handling easier, the optical fiber 1 integrated with the fixing material 2 is used.
May be laminated with a fixing material such as a film. Further, the holes in the portions where the winding column members 4a and 4b were located may be left hollow, but the fixing material 2 may be further injected to reinforce it by closing it.

In the optical fiber holding structure shown in FIGS. 1 and 2, since the optical fiber 1 is fixed by the fixing material 2, the entire structure can be integrally handled without being separated. For this reason, storage in the device can be easily performed.

Further, since the optical fiber 1 is circulated so as not to cross each other, the optical fiber 1 is stably held without microbending or the like.

Further, as shown in FIG. 2, when the optical fiber 1 is formed into a two-layer structure, the optical fiber 1 has a structure compared with a single-layer structure.
Although the thickness of the fixing material 2 becomes somewhat thicker, the increase in the thickness is a slight increase on the order of the diameter of the optical fiber 1. Therefore, the improvement in mounting density can be further expected.

Further, as shown in FIGS. 1 and 2, when the optical fiber 1 is arranged in a track shape, a straight line portion is formed on the drawing side of the optical fiber 1, so that another kind of optical fiber is connected. It is advantageous above. It is also advantageous for holding the writing portion of the fiber grating.

FIGS. 1 to 6 show the case where a holding structure of one-layer winding and two-layer winding is obtained. However, a holding structure of three-layer winding or more can be obtained.

First, in order to obtain a structure for holding a three-layered optical fiber, for example, as shown in FIG. 7, for a single continuous optical fiber 1, a part L2 (FIG. 1) and a one-layer winding part L1 (a part having the same structure as in FIG. 1), and these parts L1 and L2 are overlapped to form a three-layer winding holding structure. .

However, in this case, the two-layer winding portions L2 and 1
For example, if the two-layer winding part L2 is turned counterclockwise so that the optical fiber is not twisted at the point connecting the part with the layer winding part L1, the one-layer winding part L1 will be a clock. Orbit in the direction.

Specifically, as shown in FIG. 8, the optical fibers 1 are arranged in a loop. In this case, the length from the one end portion P1 of the optical fiber 1 to the portion indicated by the reference numeral P5 facing the both end portions P1 and P2 via the one folded portion P3 is 2/3 of the entire length of the optical fiber 1. Occupy
Also, from the other end portion P2 to the other folded portion P4
Through the optical fiber 1
Is set so as to occupy 1/3 of the total length.

Then, with respect to the portions P1 to P5 in FIG. 8, the folded portion P3 is hooked on the winding column member 4a of the manufacturing jig 3, and then the same procedure as shown in FIG. Winding is performed around the winding cylindrical members 4a and 4b so as to rotate in a counterclockwise direction to produce a two-layer winding portion L2.

Subsequently, with respect to the portions from P2 to P5 in FIG. 8, the folded portion P4 is hooked on the winding cylindrical member 4a of the manufacturing jig 3, and then in the same manner as shown in FIG. And wound around the winding cylindrical members 4a and 4b in a clockwise direction to form a single-layer winding portion L1 (FIG. 1).
See).

Then, the extra length portion (the portion before and after including P5) connecting these portions L1 and L2 is bent into an arc shape and the two portions L1 and L2 are overlapped. By integrating both parts L1 and L2, a three-layer winding holding structure is obtained.

It should be noted that, contrary to the above case, the portion L of the single-layer winding
After manufacturing 1 first, it is a matter of course that the two-layer winding portion L2 may be manufactured next.

In the example shown in FIGS. 7 and 8, the single-layer winding portion L1 and the double-layer winding portion L2 are overlapped to form a three-layer winding holding structure, but as shown in FIG. 9 or FIG. To
It is also possible to manufacture a single-layer winding portion at three locations L11, L12, and L13, and superimpose them to form a three-layer winding holding structure.

Specifically, in the case shown in FIG. 9, the portions L11, L12 and L13 of the single-layer winding are manufactured as follows.

As shown in FIG. 10, for one-third of the entire length from one end portion P1 of the optical fiber 1, one-layer winding is performed around the folded portion P3. Next, the winding end P
6 to 1/3 of the total length
Is wound around one layer. Finally, from the winding end P7 to the other end portion P2, one-layer winding is performed around the folded portion P5.

Each of these single-layer winding methods can be performed in the same manner as that shown in FIG. 5, but the light is applied to the extra length connecting the portions L11, L12, and L13 of each single-layer winding. To avoid twisting the fiber, for example,
If the part L11 of the layer winding is circling clockwise,
The rotation direction is alternately reversed so that the next single-layer winding portion L12 rotates counterclockwise and the final single-layer winding portion L13 further rotates clockwise.

In the case shown in FIG. 11, the portions L11, L12, L13 of the single-layer winding are manufactured as follows.

As shown in FIG. 12, the optical fibers 1 are arranged so as to be folded, and the end portions P1, P2
M1 and M2 which are divided into three equal parts from
For example, put a mark.

First, single-layer winding is performed in the same manner as shown in FIG. 5 toward the position of M1 with the folded portion P3 as the center.

Subsequently, single-layer winding is performed from the position M2 to the position M1. In this case, the winding is not started as shown in FIG. 5A, but the optical fiber 1 is wound around the two winding column members 4a and 4b from the beginning as shown in FIG. In addition, as shown in FIG. 13, a notch 10 is provided in the alignment side plate member 6 a of the manufacturing jig 3 so that the other portion L <b> 11 of the optical fiber which becomes a single layer does not interfere with the winding operation. It is convenient to allow the optical fiber connected to the single-layer wound portion L11 to escape through the notch 10.

Further, from the position of M2, both terminal portions P1,
One-layer winding is performed toward the position P2. In that case, FIG.
Perform in the same manner as described above.

In this case, the portions L11, L11,
In order to prevent the optical fiber 1 from being twisted at the extra length portion connecting between L12 and L13, the portions L11 and L1 of the single-layer windings respectively.
2. The circling direction is alternately reversed every L13.

Next, a case where a four-layer winding holding structure is obtained will be described.

In order to obtain the four-layered optical fiber holding structure, as shown in FIG. 14, for one continuous optical fiber 1, portions L21 and L22 (FIG. 2 and FIG. After manufacturing two parts having the same structure), these parts L21 and L22 are overlapped to form a four-layer winding holding structure.

Specifically, as shown in FIG. 15, the optical fibers 1 are arranged in a loop. In that case, the optical fiber 1
The length from one end portion P1 to the portion indicated by reference numeral P5 opposite to both end portions P1 and P2 via one folded portion P3, and P5 from the other end portion P2 via the other folded portion P4. The length of the optical fiber 1 is set so that the lengths up to the indicated portion are the same, that is, the length of the optical fiber 1 is divided into two before and after the position of P5.

Then, for each of the portions from P1 to P5 and the portions from P2 to P5 in FIG.
Winding is performed around P4 in the same manner as shown in FIG.

However, also in this case, each part L2 of the two-layer winding
To prevent the optical fiber from being twisted at the location connecting between the first and second layers L1 and L22, for example, if one double-layer winding L21 is turned clockwise, the other double-layer winding L
Reference numeral 22 denotes a counterclockwise rotation.

After the extra length portions (the front and rear portions including P5) connecting these portions L21 and L22 are bent in an arc shape, and the two portions L21 and L22 are overlapped, the fixing member 2 is used. If both parts L21 and L22 are integrated, 4
A layered holding structure is obtained.

The holding structure up to the four-layer winding has been described above, but the holding structure having the five-layer winding or more can be manufactured in the same manner. That is, in the case of the even number layer winding, the application of the four layer winding can be performed by stacking the two layer winding portions. In the case of an odd-numbered winding, it can be manufactured by stacking a single-layered winding on the last layer of an even-numbered winding.

Further, in the holding structure shown in FIGS. 1 to 15, the end portions P1 and P2 of the optical fiber 1 spirally wound are pulled out from the outer end side of the spiraled portion. However, on the contrary, the terminal portion P
It is also possible to adopt a structure in which 1, P2 is pulled out from the inner end side of the orbital portion.

For example, as shown in FIG. 1, FIG. 2, and FIG. 11, when two end portions P1 and P2 are drawn out of the fixing member 2 in parallel, they are drawn out. A predetermined extra length is secured for the end portions P1 and P2, and the end portions P1 and P2 are wound and fixed by the same fixing member as shown in FIG. 16, and then added to the already formed holding structure. What should I do?

As shown in FIGS. 7, 9 and 14, when the end portions P1 and P2 are pulled out one by one from the fixing member 2, the end portions drawn out are fixed. A predetermined extra length is secured for each of P1 and P2, and their end portions P1 and P2 are
As shown in (a) and (b), after winding and fixing with a fixing member, this may be added to the already formed holding structure.

As shown in FIGS. 16 and 17, when the end portions P1 and P2 of the optical fiber 1 are pulled out from the inner ends of the orbital portions, the degree of freedom in the pulling direction is large. Therefore, there is an advantage that the optical fiber 1 can be externally connected without causing large bending.

Further, the optical fiber 1 is fixed by using the fixing material 2.
When fixing the device, a fixing component such as a washer is arranged together with the optical fiber 1 and fixed integrally with the fixing material 2 to obtain a holding structure having a fixing portion in advance. Mounting becomes easy.

[0081]

According to the present invention, the following effects can be obtained.

(1) Since the optical fiber has a sheet shape as a whole, the optical fiber is thin, and can be handled integrally without separating the entirety, and can be easily arranged in the apparatus.

(2) Moreover, since the optical fiber is circulated so as not to cross each other, the optical fiber is stably held without microbending or the like.

(3) Further, if the optical fiber is wound in a plurality of layers, the thickness of the fixing material is somewhat thicker than in the case of the single-layer winding, but the increase in the thickness is slight. Yes,
Rather, even if it is long, the occupied area can be significantly reduced, so that the mounting density can be improved.

(4) When the optical fibers are arranged in a track shape, a straight portion is formed on the side from which the optical fibers are drawn, which is advantageous in connecting different kinds of optical fibers. It is also advantageous for holding the writing portion of the fiber grating.

(5) When fixing the optical fiber using the fixing member, if a fixing component such as a washer is also integrally disposed together with the optical fiber, a holding structure having a fixing portion in advance can be obtained. As a result, attachment to an apparatus or the like becomes easy.

(6) Also, by using the manufacturing jig of the present invention, the holding structure can be manufactured very easily and with a small number of steps.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a structure in which an optical fiber is further wound and held.

FIG. 2 is a perspective view showing a structure in which two layers of an optical fiber are wound and held.

FIG. 3 is a perspective view of a manufacturing jig used to obtain an optical fiber holding structure.

FIG. 4 is an explanatory view of a manufacturing method for obtaining the optical fiber holding structure shown in FIGS. 1 and 2;

FIG. 5 is an explanatory diagram showing a specific procedure when one layer of an optical fiber is wound.

FIG. 6 is an explanatory diagram showing a specific procedure for winding two layers of an optical fiber.

FIG. 7 is an explanatory view of an intermediate process for obtaining a structure in which an optical fiber is wound and held in three layers.

FIG. 8 is an explanatory view of a manufacturing method for obtaining the optical fiber holding structure shown in FIG. 7;

FIG. 9 is an explanatory view of an intermediate step for obtaining a structure in which an optical fiber is wound and held in three layers by another manufacturing method.

FIG. 10 is an explanatory view of a manufacturing method for obtaining the optical fiber holding structure shown in FIG. 9;

FIG. 11 is an explanatory view of an intermediate step for obtaining a structure in which an optical fiber is wound and held in three layers by another manufacturing method.

FIG. 12 is an explanatory view of a manufacturing method for obtaining the optical fiber holding structure shown in FIG.

FIG. 13 is an explanatory view of a manufacturing method in the course of obtaining the optical fiber holding structure shown in FIG.

FIG. 14 is an explanatory diagram of an intermediate process for obtaining a structure in which an optical fiber is wound and held in four layers.

15 is an explanatory diagram of a manufacturing method for obtaining the optical fiber holding structure shown in FIG.

FIG. 16 is an explanatory diagram of a configuration in which a terminal portion of an optical fiber is pulled out from an inner end side of a circling portion.

FIG. 17 is an explanatory diagram in a case where the terminal portion of the optical fiber is configured to be pulled out from the inner end side of the orbiting portion.

[Description of Signs] 1 ... optical fiber, 2 ... fixing member, 3 ... manufacturing jig, 4a,
4b: cylindrical member for winding; 6a, 6b: side plate member for alignment.

Continued on the front page. (72) Inventor: Kihiro Kawamura 4-3, Ikejiri, Itami-shi, Hyogo Mitsubishi Cable Industry Co., Ltd. Itami Works (72) Inventor: Kazuo Imamura 4-3-1, Ikejiri, Itami-shi, Hyogo Mitsubishi Cable Industries, Ltd. Inside the Itami Works

Claims (5)

[Claims] 1. A structure for fixing and holding one long optical fiber collectively, wherein said optical fiber is formed so that no crossing of one optical fiber occurs.
The optical fibers are arranged so as to be displaced from each other in a plane and are laminated at the same position in the thickness direction orthogonal to the encircling plane, and the optical fiber in this state is fixed with an adhesive or a film. An optical fiber holding structure, which is integrally held in a sheet shape by a material. 2. The optical fiber holding structure according to claim 1, wherein the optical fiber is integrally held in a sheet shape together with a fixing part such as a washer. 3. The optical fiber holding structure according to claim 1, wherein the optical fibers are arranged in a track shape. 4. A jig used for manufacturing the optical fiber holding structure according to claim 1, wherein two winding column members for winding the optical fiber are provided. A pair of alignment side plate members are provided so as to be separated from each other by a distance and sandwich the both winding column members vertically, and the winding column members are sandwiched by the alignment side plate members. The manufacturing jig characterized in that the thickness to be formed is set to a dimension corresponding to the number of stacked optical fibers. 5. The manufacturing jig according to claim 4, wherein an intermediate portion of the optical fiber is hooked on one of the winding cylindrical members of the manufacturing jig, and then the optical fiber is spread over both winding cylindrical members. A method of manufacturing an optical fiber holding structure, comprising: wrapping, and in this state, fixing an optical fiber by filling a fixing material such as an adhesive between the alignment side plate members.