JP6049828B2 - Optical fiber winding device and optical fiber coil manufacturing method - Google Patents

Description

  The present invention relates to an optical fiber winding device and a method of manufacturing an optical fiber coil, and in particular, an optical fiber winding device including a core portion around which an optical fiber is wound and a support portion that supports the core portion, and the device. The present invention relates to a method of manufacturing an optical fiber coil using the above.

  Optical fiber delay time adjustment devices, fiber lasers, optical amplifiers, laser guides, mode scramblers, dispersion compensators, optical antennas, optical fiber sensing devices, etc. are made by winding a long optical fiber into a coil. It is modularized using optical fiber coils.

  For example, an optical fiber coil used for an optical amplifier is a coil of an optical fiber doped with erbium in a core portion, and amplifies an optical signal on the optical path of the optical fiber. Here, in order to amplify the light, an erbium-doped optical fiber having a certain length is necessary. Therefore, in order to efficiently store the erbium-doped optical fiber in the optical amplifier, a long erbium-doped optical fiber is coiled. It is modularized in a bundled state.

  Similarly, for optical fiber coils used for other optical components such as delay time adjusting devices other than optical amplifiers, fiber lasers, laser guides, mode scramblers, optical fiber gyros, etc. Therefore, an optical fiber module incorporating an optical fiber coil is used.

  In the past, it was common to use an optical fiber coil with an optical fiber wound around a bobbin as an optical fiber module. However, the winding tension remained on the optical fiber wound around the bobbin. Because micro bendros may occur and the difference in linear expansion coefficient between the bobbin and the optical fiber, the stress due to the bobbin deformation is applied to the optical fiber, so the transmission loss may change depending on the temperature. Recently, a bobbin (or a winding drum portion that is a part of the bobbin) is removed when modularized, and the entire optical fiber coil is molded with resin so that the optical fiber does not fall apart (for example, Patent Document 1). Thru 3).

JP 2003-329846 A JP 2003-329852 A JP 2004-151538 A

  In the technique disclosed in Patent Document 1, six grooves are formed on the outer peripheral surface of a substantially cylindrical winding drum around which a fiber coil is wound in parallel to the central axis, and six pillars are arranged in the grooves. A take-up device is used, and after winding, a winding drum having a diameter larger than the diameter of the circle formed by each column is extracted. Therefore, since the optical fiber is in contact with the winding drum in a state where the winding tension is applied, there is a problem that a large force is applied to the optical fiber at the time of extraction, and the optical fiber is damaged.

  Further, in the techniques disclosed in Patent Documents 2 and 3, a slit is formed in the cylindrical portion and the collar portion of the winding portion, and the wound optical fiber is bent by bending the winding portion to narrow the slit. However, since the structure for taking out the winding portion around which the optical fiber is wound is complicated, there is a problem that the device becomes complicated and the cost of the device itself increases.

  The present invention has been made in view of the above points, and an object of the present invention is to provide an inexpensive optical fiber winding device that can be taken out without damaging the optical fiber coil. .

  An optical fiber winding device according to the present invention includes a core portion around which an optical fiber is wound and a support portion that supports the core portion, and the support portions are separable and are coupled to each other. A first support member and a second support member, wherein the core is attached to and supported by a first surface of the first support member facing the second support member. A first fiber receiving member; and at least one columnar second fiber receiving member attached to and supported by a first surface of the second support member facing the first support portion, the first support member In a state where the second support member and the second support member are coupled to each other, the second fiber receiving member is parallel to the plurality of first fiber receiving members and is perpendicular to the rotation axis of the optical fiber winding The first frame adjacent to The distance between the lever receiving members and the distance between the adjacent first fiber receiving member and the second fiber receiving member are substantially the same distance, and the first fiber receiving member and the second fiber receiving member An optical fiber is wound around.

  In a state where the first support member and the second support member are coupled to each other, the first fiber receiving member and the second fiber receiving member are substantially the same in a plane perpendicular to the rotation axis of the optical fiber winding. It is preferable to arrange on the circumference.

  In a preferred embodiment, the first support member and the second support member are plate-like members having a winding shaft attached to a central portion, and at least one of the first support member and the second support member In addition, a cut is provided that penetrates in the plate-shaped thickness direction and extends from the vicinity of the outer periphery toward the winding shaft, and the first fiber receiving member and the second fiber receiving member are disposed in the cut. Across the circumference. The cut may extend from the outer periphery toward the winding shaft.

  On the second surface opposite to the first surface of the first support member or the second support member in which the cut is formed, a drawn fiber holding portion for holding the optical fiber drawn from the cut is provided. It may be formed.

  The first fiber receiving member and the second fiber receiving member are preferably cylindrical.

  The second fiber receiving member has a receiving core portion and a sheath member detachably fitted in the receiving core portion, and the optical fiber is in contact with the sheath member in the second fiber receiving member. The structure wound up may be sufficient.

  In the second fiber receiving member, the friction between the receiving core portion and the sheath member on at least one of the surface where the receiving core portion contacts the sheath member and the surface where the sheath member contacts the receiving core portion. A configuration in which a lubricating member having a coefficient of 0.3 or less may be provided.

  The lubricant may be applied between the receiving core and the sheath member.

  The first fiber receiving member has a receiving core portion and a sheath member detachably fitted in the receiving core portion, and the optical fiber is in contact with the sheath member in the first fiber receiving member. The structure wound up may be sufficient.

  In the first fiber receiving member, the friction between the receiving core portion and the sheath member on at least one of the surface where the receiving core portion contacts the sheath member and the surface where the sheath member contacts the receiving core portion. A configuration in which a lubricating member having a coefficient of 0.3 or less may be provided.

  The lubricant may be applied between the receiving core and the sheath member.

  At least a part of the surface of the second fiber receiving member is provided with a lubricating member having a friction coefficient of 0.3 or less with respect to the optical fiber, and the optical fiber is lubricated in the second fiber receiving member. The structure wound up in contact with a member may be sufficient.

  The method of manufacturing an optical fiber coil of the present invention is a method of manufacturing an optical fiber coil using an optical fiber winding device including a winding core portion around which an optical fiber is wound and a support portion that supports the winding core portion. A winding step of winding the optical fiber using the optical fiber winding device, and a step of taking out the optical fiber coil in which the wound optical fiber has a donut shape from the optical fiber winding device. The support part includes a first support member and a second support member that are separable and coupled to each other, and the core part is opposed to the second support part. A plurality of parallel first pillar-shaped fiber receiving members attached to and supported by the first surface of the first support member, and attached to the first surface of the second support member facing the first support portion. And at least one columnar second fiber receiving member supported by the second fiber receiving member, and in the winding step, in the state where the first supporting member and the second supporting member are coupled to each other relative to each other, The receiving member is parallel to the plurality of first fiber receiving members, and the distance between the adjacent first fiber receiving members in a plane perpendicular to the rotation axis of the optical fiber winding, and the adjacent first fiber receiving members. The distance between the member and the second fiber receiving member is substantially the same distance, and an optical fiber is wound around the first fiber receiving member and the second fiber receiving member, and the second support The optical fiber coil is taken out after separating the member from the first support member.

  In the extraction step, the optical fiber coil may be bound by inserting a binding member into the donut-shaped central hole of the optical fiber coil, and then the second support member may be separated from the first support member. .

  The optical fiber winding device is provided with a drawing fiber holding unit that holds the optical fiber drawn out of the core, and the optical fiber is wound by a predetermined length in the winding process. A configuration may be employed in which after being taken out, it is drawn out from a portion that is wound up, and a part thereof is held in the drawn fiber holding portion, and is then wound up again on the portion that is wound up.

  The optical fiber winding device of the present invention has a plurality of first fiber receiving members attached to the first support member, a second fiber receiving member attached to the second support member, and the first support member and the first support member. The two support members are coupled to each other, and the first fiber receiving member and the second fiber receiving member wind up the optical fiber around the core portion, which is a constituent member. Therefore, the structure as a device is simple, and the first support Since the member and the second support member are separable, the wound optical fiber coil can be taken out easily and without being damaged.

1 is a schematic front view of an optical fiber winding device according to Embodiment 1. FIG. 4 is a schematic plan view of a first support member according to Embodiment 1. FIG. 3 is a schematic plan view of a second support member according to Embodiment 1. FIG. It is a typical enlarged view of the 2nd fiber receiving member. It is the schematic of optical fiber winding based on Embodiment 1. FIG. It is a typical perspective view of the bundled optical fiber coil. It is the schematic which showed the process with the optical fiber winding which concerns on Embodiment 2. FIG. It is the schematic which showed the process with the optical fiber winding which concerns on Embodiment 2. FIG. It is the schematic which showed the process with the optical fiber winding which concerns on Embodiment 2. FIG. It is the schematic which showed the process with the optical fiber winding which concerns on Embodiment 2. FIG. It is the schematic which showed the process with the optical fiber winding which concerns on Embodiment 2. FIG.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the following drawings, components having substantially the same function are denoted by the same reference numerals for the sake of brevity.

(Embodiment 1)
An optical fiber winding device 100 according to Embodiment 1 is shown in FIG. The optical fiber winding device 100 includes a core portion 10 around which the optical fiber is wound, and a support portion 20 that supports the core portion 10. As shown in FIGS. 2 and 3, the support unit 20 includes a disk-shaped first support member 21 and a second support member 22. The first support member 21 and the second support member 22 are respectively The first surfaces 31 and 32 are disposed so as to be substantially parallel to each other, and are coupled by a take-up shaft 23 at the central portion of both. The winding shaft 23 is formed by fitting a first winding shaft portion 23a on the first support member 21 side and a second winding shaft portion 23b on the second support member 22 side. This fitting portion is formed to be detachable, and the first support member 21 and the second support member 22 are separable.

  On the first surface 31 of the first support member 21, seven pin-shaped (cylindrical) first fiber receiving members 11a, 11a,... And one first receiving hole 11b are provided as the first winding shaft. It arrange | positions at each vertex of a regular octagon around the part 23a. The first fiber receiving members 11a, 11a,... Are arranged in parallel to each other.

  On the first surface 32 of the second support member 22, one pin-shaped (cylindrical) second fiber receiving member 12a and seven second receiving holes 12b, 12b,... Around the part 23b, it is arrange | positioned at each vertex of a regular octagon. Further, on the second surface 34 which is the back surface of the first surface 32, the second fiber receiving member 12 a protrudes also on the second surface 34 side.

  As shown in FIG. 4, the second fiber receiving member 12 a is formed by covering a pin-shaped receiving core portion 15 with a sheath member 16. The sheath member 16 has a cylindrical shape, and a lubricating member is provided on at least one of the receiving core portion 15 and the sheath member 16 so that the friction coefficient between the receiving core portion 15 and the sheath member 16 is 0.3 or less. The sheath member 16 can be slid and removed from the receiving core portion 15 with a small force. Moreover, the front-end | tip part of the receiving core part 15 which protrude | jumped out from the sheath member 16 is inserted and fitted in the 1st receiving hole 11b.

  The first support member 21 and the second support member 22 are coupled to each other with the first surfaces 31 and 32 facing each other and the first winding shaft portion 23a and the second winding shaft portion 23b are fitted to each other. Then, the tips of the first fiber receiving members 11a, 11a,... Fit into the second receiving holes 12b, 12b,..., And the tips of the second fiber receiving member 12a fit into the first receiving holes 11b. In this way, the first fiber receiving members 11a, 11a,... And the second fiber receiving member 12a are arranged in parallel to each other and on the same circumference around the rotation axis of winding, and at each vertex of the regular octagon. become. The distances between the adjacent first fiber receiving members 11a, 11a,... And the second fiber receiving member 12a are substantially the same.

  More precisely, in the state where the first support member 21 and the second support member 22 are installed facing each other, the portions of the first fiber receiving member 11a and the second fiber receiving member 12a that are in contact with the optical fiber are wound. They are arranged on substantially the same circumference in a plane perpendicular to the take-up shaft.

  The second support member 22 is a disk-shaped member having a diameter larger than that of the first support member 21, and four slits (cuts) 41, 41,... Are provided from the outer edge toward the center of the disk. . The four slits 41, 41,... Are notches penetrating in the disk-shaped thickness direction, and are provided by rotating about 90 ° around the take-up shaft. Are located on the inner side of the circumference formed by the first fiber receiving members 11a, 11a, ... and the second fiber receiving member 12a. That is, the slits 41, 41,... Cross the circumference described above.

  The optical fiber is wound using the optical fiber winding device 100 in the state shown in FIG. As shown in FIG. 5, the optical fiber 1 is wound around a first fiber receiving member 11a, 11a,... And a second fiber receiving member 12a (sheath member 16) around the winding shaft 23 to form a cylindrical shape (donut Shape) optical fiber coil. At the time of winding, an optical fiber coil can be formed so as not to collapse by applying a predetermined tension to the optical fiber 1 and winding it. The predetermined tension is a tension within a range in which the optical fiber behaves as an elastic body. Depending on the type of optical fiber, when it behaves as an elastic body, elongation of 0.2 to 0.5% occurs.

  The first fiber receiving members 11a, 11a,... And the second fiber receiving member 12a are arranged on the same circumference around the take-up shaft 23, and the optical fiber 1 is taken up along this circumference. Therefore, if a constant winding tension is applied, the fiber tension in the optical fiber coil becomes uniform at any location, and no part of the optical fiber coil is loosened or tightened during winding.

  When the optical fiber coil around which the optical fiber 1 having a predetermined length is wound is formed, the tape (bundling member) is passed from the tips 42, 42,... Of the slits 41, 41,. ) To bind the optical fiber coil. FIG. 6 shows the bundled optical fiber coil 3. Since the optical fiber coil 3 is bundled by the tape 45 at four positions at equal intervals, the shape is prevented from being broken. Are positioned on the inner side of the circumference formed by the first fiber receiving members 11a, 11a,... And the second fiber receiving member 12a. Therefore, even when the optical fiber 1 is wound around the optical fiber winding device 100, the tape 45 is inserted into the hollow portion of the optical fiber coil 3 from the tips 42, 42,. Can do.

  When the optical fiber coil is bound by the tape 45, the second support member 22 is removed from the optical fiber winding device 100. At this time, since the friction between the receiving core portion 15 and the sheath member 16 is small in the second fiber receiving member 12a, the sheath member 16 remains in the hollow portion of the optical fiber coil, and only the receiving core portion 15 is the second support. It is held by the member 22 and removed from the optical fiber coil. Thereby, in the removal process of the 2nd support member 22, it does not arise that the receiving core part 15 contacts the optical fiber coil 3. FIG. In this removal step, when the receiving core portion 15 comes into contact with the optical fiber coil 3, there is a risk of damaging the optical fiber, but in the apparatus of this embodiment, there is no possibility of damaging such an optical fiber.

  When the second support member 22 is removed from the optical fiber winding device 100, the tensile stress of the optical fiber in the optical fiber coil is relaxed, and the elongation of the optical fiber is eliminated. Therefore, a gap is formed between the optical fiber coil 3 and the first fiber receiving members 11a, 11a,..., And the optical fiber coil 3 can be easily taken out from the optical fiber winding device 100.

  In the optical fiber winding device 100 of the present embodiment, the first fiber receiving members 11a, 11a,... And the second fiber receiving member are wound around only the seven first fiber receiving members 11a, 11a,. It is 1.8% shorter than the length of one turn wound around 12a. Since the elongation strain of the optical fiber when the winding tension is lacking is 0.2 to 0.5%, the decrease in the loop length when the second fiber receiving member 12a is extracted as in this embodiment is 0. If it is larger than 0.5%, the optical fiber coil can be easily taken out from the first fiber receiving members 11a, 11a,... After the second support member 22 is removed from the optical fiber winding device 100.

  As described above, when an optical fiber is wound using the optical fiber winding device 100 of the present embodiment, it can be uniformly wound with a constant tension, and a cylindrical optical fiber coil can be easily manufactured. Can do. Since this optical fiber coil is held in the optical fiber winding device 100, it can be bundled with four tapes 45 using slits 41, 41,... Penetrating in the thickness direction of the second support member 22. The cylindrical shape of the coil 3 can be easily held. And the optical fiber coil 3 can be easily taken out from the optical fiber winding device 100 by removing the second support member 22 from the optical fiber winding device 100. The optical fiber winding device 100 of this embodiment has a simple structure and can be produced at low cost. Further, since the optical fiber coil 3 can be easily manufactured and easily taken out, the optical fiber coil 3 can be manufactured at a low cost and in a short time.

(Embodiment 2)
The optical fiber winding method according to the second embodiment is a method of winding an optical fiber coil having a four-layer structure using the optical fiber winding device 100 according to the first embodiment.

  The optical fiber coil having a four-layer structure is a single coil shape as shown in FIG. 6 in the appearance of the optical fiber coil itself. Each of the four output ends is formed. With this structure, a plurality of optical fiber coils can be compactly accommodated in one place, so that an apparatus using these optical fiber coils can be reduced in size.

  As shown in FIG. 7, the four-layer structure optical fiber coil is produced by four central guide rollers 81 to 81 provided on the second surface 34 opposite to the first surface of the second support member 22. 84 and eight outer guide rollers 71 to 78 and the first fiber receiving members 11a, 11a,... And the second fiber receiving member 12a protruding to the second surface 34 side, and the optical fiber 1 is hooked on them. This is done by securing four layers of input / output end portions. The central guide rollers 81 to 84 and the outer guide rollers 71 to 78 function as a drawing fiber holding unit that holds the optical fiber 1 drawn from the slit 41.

  A method for winding a four-layer structure optical fiber coil will be described in order.

  (1) First, as shown in FIG. 7, the end portion 61 of the optical fiber 1 is fixed to a part of the second surface of the second support member 22, and the optical fiber 1 is then connected to the outer guide rollers 71 and 72, The first fiber receiving members 11a and 11a, the outer guide rollers 73, 74, 75, and 76, the first fiber receiving members 11a and 11a, the outer guide roller 77, and the central guide roller 84 are hung in this order. And the optical fiber 1 is put into the 1st surface side of the 2nd supporting member 22 from the slit 41a, and the optical fiber 1 is started to be wound up by the winding core part. Note that reference numeral 90 denotes the first layer winding start portion.

  (2) FIG. 8 shows a state where the first layer 62 has been wound. Reference numeral 91 denotes a portion where the first layer 62 has been wound. The optical fiber 1 is drawn from the core portion through the slit 41b to the second surface 34 side of the second support member 22.

  (3) Next, on the second surface 34 side of the second support member 22, the optical fiber 1 is placed at the center guide roller 83, the outer guide roller 76, the first fiber receiving members 11 a and 11 a, the outer guide rollers 77, 78, 71, 72, first fiber receiving members 11a, 11a, outer guide rollers 73, 74, 75, 76, first fiber receiving members 11a, 11a, outer guide roller 77, and central guide roller 84, which are hung in this order. Then, the second layer is wound around the first side of the second support member 22 through the slit 41a, and the second layer is started to be wound around the core portion. Reference numeral 92 denotes a winding start portion of the second layer.

  (4) FIG. 10 shows a state in which the second layer 63 is wound on the first layer 62 (coil outer surface) and the winding is completed. Reference numeral 93 denotes a portion where the second layer 63 has been wound. Similarly to the end of winding of the first layer 62, the optical fiber 1 is drawn from the winding core portion to the second surface 34 side of the second support member 22 through the slit 41b.

  (5) After that, when the same steps as (3) and (4) are repeated twice, an optical fiber coil having a four-layer structure shown in FIG. 11 is completed. A third layer 64 is wound on the second layer 63, and a fourth layer 65 is wound thereon. Thereafter, the optical fiber coils are bundled with tape as in the first embodiment. Then, at 99, the optical fiber is cut, and the optical fibers hanging on the central guide rollers 83 and 84, the outer guide rollers 71 to 78, and the first fiber receiving members 11a and 11a are removed. The removed portion of the optical fiber becomes the input / output end of each of the first layer 62 to the fourth layer 65.

  Next, as in the first embodiment, the second support member 22 is removed from the optical fiber winding device 100, and then the optical fiber coil is taken out from the optical fiber winding device 100.

In the present embodiment, the same effects as in the first embodiment are obtained. Furthermore, an optical fiber coil having a four-layer structure can be easily manufactured.
(Other embodiments)
The above-described embodiment is an exemplification of the present invention, and the present invention is not limited to these examples, and these examples may be combined or partially replaced with known techniques, common techniques, and known techniques. Also, modified inventions easily conceived by those skilled in the art are included in the present invention.

  The second fiber receiving member may have a structure without a sheath member, that is, the same structure as the first fiber receiving member. In the case of the second fiber receiving member having such a structure, when the second support member is removed from the optical fiber winding device, the optical fiber can be obtained by moving the second support member parallel to the axial direction of the second fiber receiving member. Will not hurt. In this case, it is preferable that a lubrication member is provided on the surface of the second fiber receiving member or a lubricant is applied so that the coefficient of friction with the optical fiber is 0.3 or less. Since the friction during removal is low, the removal process can be performed easily and the optical fiber can be prevented from being damaged.

  Alternatively, the first fiber receiving member may have a structure composed of a receiving core portion and a sheath member similar to the second fiber receiving member of the first embodiment.

  The total number of the first fiber receiving member and the second fiber receiving member in the winding core portion need not be eight. It is sufficient that at least two first fiber receiving members and one second fiber receiving member are provided, and the upper limit of the number is that the decrease in the circumference when the second fiber receiving member is pulled out is the elongation of the optical fiber due to the winding tension. The number is equal to the rate. In addition, since the elongation rate of an optical fiber changes with kinds of optical fiber, it is difficult to limit here as a predetermined | prescribed numerical value. There may be a plurality of second fiber receiving members. In order to wind up the optical fiber coil into a cylindrical shape so that there is no inconvenience such as microbending, the total number of the first fiber receiving member and the second fiber receiving member is preferably 6 or more.

  It is preferable that a plurality of slits exist because the optical fiber coil can be bundled at a plurality of locations and the coil state can be stably maintained. In particular, it is preferable that three to six slits exist.

  A tape that is a binding member may be attached to a device before the optical fiber is wound, and then the optical fiber may be wound and the optical fiber coil may be bound with the tape. In this case, it is not necessary to cut the support member.

  As described above, the optical fiber winding device according to the present invention has a simple structure, can easily produce an optical fiber coil, and is useful as a device for producing a fiber laser, an optical amplifier, and the like.

DESCRIPTION OF SYMBOLS 1 Optical fiber 3 Optical fiber coil 10 Winding part 11a 1st fiber receiving member 12a 2nd fiber receiving member 15 Receiving core part 16 Sheath member 20 Supporting part 21 First supporting member 22 Second supporting member 23 Winding shaft 31 1st Surface 32 First surface 34 Second surface 41 Slit (cut)
41a, 41b Slit (cut)
45 Tape (Bundling member)
71-78 Outer guide rollers 81-84 Center guide roller 100 Optical fiber winding device

Claims (16)

A core portion around which the optical fiber is wound, and a support portion that supports the core portion,
The support portion includes a first support member and a second support member that are separable and coupled to each other.
The core portion is attached to and supported by a first surface of the first support member facing the second support member, and a plurality of parallel columnar first fiber receiving members, and the first support member. And at least one columnar second fiber receiving member attached to and supported by the first surface of the opposing second support member,
The number of the first fiber receiving members is different from the number of the second fiber receiving members,
In a state in which the first support member and the second support member are coupled to each other, the second fiber receiving member is parallel to the plurality of first fiber receiving members, and the optical fiber winding is rotated. The distance between the first fiber receiving members adjacent to each other on the plane perpendicular to the axis and the distance between the first fiber receiving member and the second fiber receiving member adjacent to each other are substantially the same distance, and the first An optical fiber is wound around the first fiber receiving member and the second fiber receiving member,
The second fiber receiving member has a receiving core portion and a sheath member detachably fitted to the receiving core portion,
An optical fiber winding device in which the optical fiber is wound in contact with the sheath member in the second fiber receiving member.   The optical fiber winding device according to claim 1, wherein the number of the first fiber receiving members is larger than the number of the second fiber receiving members.   In a state where the first support member and the second support member are coupled to each other, the first fiber receiving member and the second fiber receiving member are substantially the same in a plane perpendicular to the rotation axis of the optical fiber winding. The optical fiber winding device according to claim 1 or 2, which is arranged on a circumference. The first support member and the second support member are plate-like members to which a winding shaft is attached at a central portion,
At least one of the first support member and the second support member is provided with a notch extending through the plate-shaped thickness direction and extending from the vicinity of the outer periphery toward the winding shaft,
4. The optical fiber winding device according to claim 3, wherein the notch crosses a circumference where the first fiber receiving member and the second fiber receiving member are arranged. 5.   The optical fiber winding device according to claim 4, wherein the cut extends from the outer periphery toward the winding shaft.   On the second surface opposite to the first surface of the first support member or the second support member in which the cut is formed, a drawn fiber holding portion for holding the optical fiber drawn from the cut is provided. The optical fiber winding device according to claim 4 or 5, which is formed.   The optical fiber winding device according to any one of claims 1 to 6, wherein the first fiber receiving member and the second fiber receiving member are cylindrical. In the second fiber receiving member, the friction between the receiving core portion and the sheath member on at least one of the surface where the receiving core portion contacts the sheath member and the surface where the sheath member contacts the receiving core portion. The optical fiber winding device according to any one of claims 1 to 7 , wherein a lubricating member having a coefficient of 0.3 or less is provided. The optical fiber winding device according to any one of claims 1 to 7, wherein a lubricant is applied between the receiving core portion and the sheath member. The first fiber receiving member has a receiving core part and a sheath member detachably fitted to the receiving core part,
The optical fiber winding device according to any one of claims 1 to 9 , wherein the optical fiber is wound in contact with the sheath member in the first fiber receiving member. In the first fiber receiving member, the friction between the receiving core portion and the sheath member on at least one of the surface where the receiving core portion contacts the sheath member and the surface where the sheath member contacts the receiving core portion. The optical fiber winding device according to claim 10 , wherein a lubricating member having a coefficient of 0.3 or less is provided. The optical fiber winding device according to claim 10 , wherein a lubricant is applied between the receiving core portion and the sheath member. At least a part of the surface of the second fiber receiving member is provided with a lubricating member having a friction coefficient with the optical fiber of 0.3 or less,
The optical fiber winding device according to any one of claims 1 to 12 , wherein the optical fiber is wound in contact with the lubricating member in the second fiber receiving member. A method of manufacturing an optical fiber coil by using an optical fiber winding device including a core portion around which an optical fiber is wound and a support portion that supports the core portion,
A winding step of winding the optical fiber using the optical fiber winding device;
A step of taking out the optical fiber coil in which the wound optical fiber has a donut shape from the optical fiber winding device;
Contains
The support portion includes a first support member and a second support member that are separable and coupled to each other.
The core portion is attached to and supported by a first surface of the first support member facing the second support member, and a plurality of parallel columnar first fiber receiving members, and the first support member. And at least one columnar second fiber receiving member attached to and supported by the first surface of the opposing second support member,
The number of the first fiber receiving members is different from the number of the second fiber receiving members,
In the winding step, the second fiber receiving member is parallel to the plurality of first fiber receiving members in a state in which the first supporting member and the second supporting member are coupled to each other. The distance between the adjacent first fiber receiving members on the surface perpendicular to the rotation axis of the optical fiber winding, and the distance between the adjacent first fiber receiving member and the second fiber receiving member are substantially the same distance. And an optical fiber is wound around the first fiber receiving member and the second fiber receiving member,
In the taking out step, the optical fiber coil is taken out after separating the second supporting member from the first supporting member,
The optical fiber winding device is provided with a drawing fiber holding portion for holding the optical fiber drawn out of the core portion,
In the winding process, the optical fiber is pulled out from a portion that is wound after a predetermined length is wound, and a part of the optical fiber is held in the drawing fiber holding portion, and then wound. wound again on a portion, a method of manufacturing an optical fiber coil. The method of manufacturing an optical fiber coil according to claim 14 , wherein the number of the first fiber receiving members is larger than the number of the second fiber receiving members. The said extraction process WHEREIN: A bundling member is inserted in the hole of the said donut shape center of the said optical fiber coil, the said optical fiber coil is bundled, and the said 2nd support member is isolate | separated from the said 1st support member after that. A method of manufacturing the optical fiber coil described in 14 or 15 .

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