TW202303204A - Optical fiber cutting method and cutting kit - Google Patents

Abstract

This optical fiber cutting method comprises a first step and a second step. At the first step, a first optical fiber wire (21) that is an optical fiber provided with a first core (23) and a first cladding (24), and a second optical fiber wire (22) that is disposed in parallel with the first optical fiber wire (21) are prepared. At the second step, a common blade (4) is moved relative to the first optical fiber wire (21) and the second optical fiber wire (22) to cut the first optical fiber wire (21) and the second optical fiber wire (22). At the second step, the blade (4) cuts into the second optical fiber wire (22) before cutting of the first optical fiber wire (21) is complete.

Description

Optical fiber cutting method and cutting set

The invention relates to an optical fiber cutting method and a cutting set.

A method of sequentially cutting a plurality of optical fibers with a disc-shaped cutting blade is known (see, for example, Patent Document 1 below). In the method described in Patent Document 1, a plurality of optical fibers arranged in the left-right direction are cut one by one by sliding the cutting blade in the left-right direction. The cut surface of the cut optical fiber is optically connected with other optical components. [Prior Art Literature] [Patent Document]

[Patent Document 1] Japanese Patent Laid-Open No. 2014-153477

[Problem to be Solved by the Invention]

In order to ensure the reliability of the optical connection between the cut surface of the optical fiber and other optical components, flatness is required for the cut surface of the optical fiber. However, in the method described in Patent Document 1, the pressure applied to the optical fiber drops rapidly when the cutting of the first optical fiber is about to be completed. As a result, it tends to vibrate when the blade moves, and thus irregularities are formed on the cut surface of the first optical fiber. As a result, there is a problem that the reliability of the optical connection at the cut surface of the optical fiber is low.

The invention provides an optical fiber cutting method capable of forming a flat cutting surface and a cutting set. [Technical means to solve the problem]

The present invention (1) includes a method for cutting an optical fiber. The method for cutting an optical fiber includes: a first step of preparing an optical fiber including a core and a cladding covering the core, that is, a first wire; The second line of arrangement; and the second step, which moves the common blade relative to the first line and the second line, and cuts the first line and the second line; and in the second step , before the cutting of the aforementioned first line ends, the aforementioned blade cuts into the aforementioned second line.

According to this method, in the second step, the blade cuts into the second line before finishing cutting the first line. That is, after the blade cuts into the second line, it finishes cutting the first line. Therefore, when the cutting of the first optical fiber is about to be completed, the pressure applied to the optical fiber by the blade is suppressed from decreasing rapidly. Therefore, shaking of the blade can be suppressed. Therefore, the first wire can be stably cut. As a result, the cut surface of the first wire can be flattened. Therefore, this first wire is excellent in optical connection reliability.

The present invention (2) includes the optical fiber cutting method of (1), wherein the blade cuts into the second wire when the blade cuts into the center of gravity of the first wire or before that.

According to this method, when the blade cuts into the center of gravity of the first wire or before, the blade cuts into the second wire, so vibration of the blade can be suppressed, and the first wire can be cut more stably.

The present invention (3) includes the optical fiber cutting method of (1) or (2), wherein the blade cuts into the second wire when the blade cuts into the core of the first wire or before that.

According to this method, when the blade cuts into the core of the first wire or before, the blade cuts into the second wire, so vibration of the blade can be suppressed, and the first wire can be cut more stably.

The present invention (4) includes the optical fiber cutting method of any one of (1) to (3), wherein the blade has a straight blade tip, and the direction along the blade tip is perpendicular to the moving direction of the blade. .

According to this method, since the direction along the edge of the blade is perpendicular to the moving direction of the blade, the area of the blade passing through the cross section of the optical fiber becomes smaller, thereby reducing damage to the optical fiber.

The present invention (5) includes the method of cutting an optical fiber according to any one of (1) to (4), wherein the second thread is an optical fiber.

According to this method, a plurality of optical fibers can be cut at one time.

The present invention (6) includes the cutting method of an optical fiber according to any one of (1) to (4), wherein the second line is a dummy optical fiber.

According to this method, since the second wire is a dummy optical fiber that does not transmit an optical signal, even if the cut surface of the second wire is uneven instead of flat, it can be tolerated. Also, by making the second line a dummy optical fiber instead of an optical fiber, the yield of the optical fiber at the time of manufacture can be improved.

The present invention (7) includes a cutting set, which is used to implement the cutting method of any one of (1) to (6), and includes: a holding member, which connects the aforementioned first wire and the aforementioned second The wire can pass through and can be held; and the blade has a straight edge, which can move in a direction inclined to the direction in which the first wire and the second wire held by the holding member are aligned, and can be aligned with the second wire. Move in the direction perpendicular to the direction of the aforementioned blade tip.

According to this cutting set, in the second step, the blade can cut into the second thread before ending the cutting of the first thread. That is, the blade can end the cutting of the first line after cutting into the second line. Therefore, the first wire can be stably cut. The cut surface of the first line can be flattened. As a result, the first wire can be cut so as to be excellent in optical connection reliability.

Also, according to the cutting set, since the direction along the edge of the blade can be perpendicular to the moving direction of the blade, the area of the blade passing through the cross section of the optical fiber becomes smaller, thereby reducing damage to the optical fiber. [Effect of Invention]

According to the cutting method and cutting set of the present invention, a flat cutting surface can be formed.

<An embodiment> Referring to FIG. 1A to FIG. 3 , an embodiment of an optical fiber cutting method and a cutting set will be described. In addition, in order to clearly show the relative arrangement of the first optical fiber 21, the second optical fiber 22, and the blade 4 (described later), the connector 5 is omitted in FIG. 1 (see FIG. 3 ).

＜Cutting method＞ The cutting method of the first optical fiber 21 and the second optical fiber 22 is implemented using the cutting set 2 .

＜Cutting set＞ As shown in FIG. 3 , the cutting set 2 includes a holding member 3 and a blade 4 .

The holding member 3 includes a connector 5 , a ferrule 6 , and an arrangement member 7 .

The connector 5 integrally includes a guide portion 8 and a ferrule fixing portion 9 .

The guide portion 8 includes a first guide plate 11 , a second guide plate 12 , and a connecting portion 16 . The first guide plate 11 and the second guide plate 12 are arranged to face each other with a gap therebetween. The opposing direction of the 1st guide plate 11 and the 2nd guide plate 12 is a front-back direction. The second guide plate 12 side is the front side. The first guide plate 11 side is the rear side. The first guide plate 11 is parallel to the second guide plate 12 . The first guide plate 11 has a substantially rectangular shape in front view. Furthermore, the front view means viewing from the front side. The first guide plate 11 has a first opening 13 penetrating in the front-rear direction. The first opening 13 has a substantially rectangular shape that is long in the left-right direction when viewed from the front side. The left-right direction is perpendicular to the front-back direction, which is the paper thickness direction in Figure 3. The first opening 13 has a size including the first optical fiber 21 and the second optical fiber 22 . One first opening 13 is provided on the first guide plate 11 .

The second guide plate 12 has a substantially rectangular shape in front view. The second guide plate 12 has a second opening 14 penetrating in the front-rear direction. The second opening 14 has a substantially rectangular shape that is long in the left-right direction. When projected in the front-rear direction, the second opening 14 includes the first opening 13 . The second opening 14 has a size including the first optical fiber 21 and the second optical fiber 22 . One second opening 14 is provided in the second guide plate 12 .

The connecting portion 16 connects the lower end of the first guide plate 11 and the lower end of the second guide plate 12 . The connecting portion 16 has a shape extending in the left-right direction.

The ferrule fixing portion 9 extends rearward from the rear surface of the first guide plate 11 . The ferrule fixing portion 9 has a rectangular tube shape that is long in the left-right direction. The inside of the ferrule fixing part 9 communicates with the first opening part 13 .

The ferrule 6 has a shape in which the length in the vertical direction is short, and the length in the front-rear direction and the length in the left-right direction are both long. The ferrule 6 is inserted into the first opening 13 of the first guide plate 11 and the ferrule fixing part 9 . Thereby, the ferrule 6 is fixed to the first guide plate 11 . The ferrule 6 has a plurality of (2) through holes 60 inside. The plurality of through-holes 60 are spaced apart from each other in the left-right direction.

As shown in FIG. 1A and FIG. 3 , the arrangement member 7 is an arrangeable member for arranging the first optical fiber 21 and the second optical fiber 22 . Arranging member 7 is attached to and fixed to connector 5 . The arrangement member 7 is arranged on the front side of the second guide plate 12 . The arrangement member 7 has a thin plate shape in the front-rear direction. As shown in FIG. 1A , the arrangement member 7 has a plurality of grooves 17 , 18 . Each of the plurality of grooves 17 , 18 is formed by cutting from the upper end surface of the arrangement member 7 to the lower side when viewed from the front side. Each of the plurality of grooves 17 and 18 is long in the vertical direction. The number of the plurality of grooves 17, 18 corresponds to the number of optical fibers. The plurality of grooves 17 and 18 include a first groove 17 and a second groove 18 .

The first tank 17 has a first bottom 19 . The shape of the first bottom 19 corresponds to the shape of the first optical fiber 21 .

The second groove 18 is spaced apart on the left side of the first groove 17 . The second groove 18 is longer than the first groove 17 in the vertical direction. The second tank 18 has a second bottom 20 . The shape of the second bottom 20 corresponds to the shape of the second optical fiber 22 .

The cutting set 2 is provided with one blade 4 . The one blade 4 is commonly used for cutting the first optical fiber 21 and the second optical fiber 22 . The blade 4 has a substantially rectangular shape in front view. The blade 4 has a cutting edge 41 at the lower end edge. The blade tip 41 has a linear shape. The blade tip 41 is along the left-right direction.

The blade 4 is relatively movable with respect to the holding member 3 . Specifically, the blade edge 41 can move relative to the first bottom portion 19 and the second bottom portion 20 . More specifically, the blade 4 can move up and down. The holding member 3 is immovable. The blade edge 41 is equipped on the holding member 3 so that it can be arrange|positioned between the 1st guide plate 11 and the 2nd guide plate 12. As shown in FIG.

＜Cutting method＞ A method of cutting the first optical fiber 21 and the second optical fiber 22 together using the cutting set 2 will be described. The cutting method of the first optical fiber 21 and the second optical fiber 22 includes a first step and a second step.

＜Step 1＞ In the first step, the first optical fiber 21 and the second optical fiber 22 are prepared.

The first optical fiber line 21 is an optical fiber. The first optical fiber 21 has a substantially circular cross section. The first optical fiber 21 has a first core 23 as an example of a core, and a first cladding 24 as an example of a cladding. The first core 23 has a substantially circular cross-section. The first core 23 has a common axis with the first optical fiber 21 . The first cladding layer 24 is arranged on the outer peripheral surface of the first core 23 . The first cladding layer 24 has a substantially circular ring shape in cross section. The first cladding layer 24 has a common axis with the first core 23 . The first cladding layer 24 has a lower refractive index than the first core 23 . As a material of the 1st optical fiber 21, resin and ceramics are mentioned, for example. As resin, an acrylic resin and an epoxy resin are mentioned, for example. As ceramics, glass is mentioned, for example. As the material of the first optical fiber 21, resin is preferably used from the viewpoint of flexibility. In this case, the first optical fiber wire 21 is called a plastic optical fiber (POF) wire. The size of the first optical fiber 21 is not particularly limited. The radius of the first optical fiber 21 is, for example, 5 μm or more and, for example, 500 μm or less.

The second optical fiber line 22 is an optical fiber. The second optical fiber 22 is arranged parallel to the first optical fiber 21 . The second optical fiber 22 has the same configuration (including materials and dimensions) as the first optical fiber 21 . Specifically, the second optical fiber 22 has a second core 25 and a second cladding 26 . The second core 25 and the second cladding 26 have the same configuration (including materials and dimensions) as those of the first core 23 and the first cladding 24 , respectively.

In the first step, specifically, the first optical fiber 21 and the second optical fiber 22 are set in the cutting set 2 . Specifically, the first optical fiber 21 and the second optical fiber 22 are inserted into the holding member 3 .

First, each of the first optical fiber 21 and the second optical fiber 22 is inserted into and passed through each of the plurality of through holes 60 of the ferrule 6 . Next, the ferrule 6 is inserted into the interior of the ferrule fixing portion 9 and the first opening 13 of the first guide plate 11 . Then, the first optical fiber 21 and the second optical fiber 22 are inserted into the first opening 13 and the second opening 14, respectively.

Next, the arrangement member 7 is attached to the connector 5 . The first optical fiber 21 is fixed to the first bottom 19 , and the second optical fiber 22 is fixed to the second bottom 20 . Furthermore, a pressing member not shown can be inserted into each of the first groove 17 and the second groove 18 from above the first optical fiber 21 and the second optical fiber 22, and the first optical fiber 21 and the second optical fiber 22 can be inserted together. 2. The upper ends of each of the optical fibers 22 are pressed against each of the first bottom 19 and the second bottom 20. Thereby, the first optical fiber 21 and the second optical fiber 22 pass through the holding member 3 and are held.

Thereby, as shown in FIGS. 1A to 1C , the center of gravity of the first optical fiber 21 does not overlap with the center of gravity of the second optical fiber 22 when projected in the left-right direction. On the other hand, when the lower edge of the first optical fiber 21 is projected in the left-right direction, it overlaps with, for example, a portion lower than the upper edge of the second optical fiber 22 .

Also, in this embodiment, as shown in FIG. 1B , the upper end edge of the second optical fiber 22 overlaps with, for example, a portion above the lower end edge of the first optical fiber 21 when projected in the left-right direction.

Preferably, as shown in FIG. 2A, the upper edge of the second optical fiber line 22 overlaps with the center of gravity of the first optical fiber line 21 when projected, or as shown in FIG. 2B and FIG. The upper part of the center of gravity of the line 21 overlaps.

More preferably, as shown in FIG. 2B, the upper edge of the second optical fiber 22 overlaps with the upper edge of the first core 23 of the first optical fiber 21, or as shown in FIG. The position overlaps with the part above the first core 23 .

The angle formed by the vertical direction and the direction in which the first optical fiber 21 and the second optical fiber 22 are arranged includes an acute angle of inclination β. The inclination angle β is not particularly limited. The inclination angle β is, for example, 20 degrees or more, preferably 45 degrees or more, more preferably 60 degrees or more, particularly preferably 70 degrees or more, more preferably 75 degrees or more, and, for example, 89 degrees or more, preferably 85 degrees or more. degree or more. The direction in which the first optical fiber 21 and the second optical fiber 22 are arranged is along a line passing through the center of gravity of the first optical fiber 21 and the center of gravity of the second optical fiber 22 in the cross section.

The distance P between the center of gravity of the first optical fiber 21 and the center of gravity of the second optical fiber 22 is not particularly limited. The distance P between the center of gravity of the first optical fiber 21 and the center of gravity of the second optical fiber 22 is, for example, not less than 0.1 mm and not more than 10 mm.

As shown in FIG. 2A , when the upper edge of the second optical fiber 22 overlaps with the center of gravity of the first optical fiber 21 , the following expression (A) is satisfied. cosβ=R/P (A) β: the inclination angle formed by the vertical direction and the direction in which the first optical fiber 21 and the second optical fiber 22 are arranged R: Radius of the second optical fiber line 22 P: the distance between the center of gravity of the first optical fiber line 21 and the center of gravity of the second optical fiber line 22

When the upper edge of the second optical fiber 22 overlaps with the center of gravity of the first optical fiber 21 as shown in FIG. 2A , or partially overlaps with the upper side of the center of gravity of the first optical fiber 21 as shown in FIG. 2B and FIG. 2C , it satisfies The following formula (1). cosβ≧R/P (1) β: the inclination angle formed by the vertical direction and the direction in which the first optical fiber 21 and the second optical fiber 22 are arranged R: Radius of the second optical fiber line 22 P: the distance between the center of gravity of the first optical fiber line 21 and the center of gravity of the second optical fiber line 22

In the second step, the common blade 4 is relatively moved relative to the first optical fiber 21 and the second optical fiber 22 to cut the first optical fiber 21 and the second optical fiber 22 . Specifically, the blade 4 is moved downward. Then, first, as shown in FIG. 1A , the blade edge 41 cuts into the first optical fiber 21 . Thereafter, as shown in FIG. 1B , the blade edge 41 cuts into the second optical fiber 22 . Thereafter, as shown in FIG. 1C , the cutting of the first optical fiber 21 is completed. Thereafter, the cutting of the second optical fiber 22 is completed.

Preferably, the blade 4 cuts into the second optical fiber 22 when the blade 4 cuts into the center of gravity of the first optical fiber 21 (see FIG. 2A ), or before that (see FIGS. 2B and 2C ).

More preferably, the blade 4 cuts into the second optical fiber 22 when the blade 4 cuts into the first core 23 of the first optical fiber 21 (see FIG. 2B ) or before that ( FIG. 2C ).

<Effect of one embodiment>

According to this method, in the second step, as shown in FIG. 1B , the blade 4 cuts into the second optical fiber 22 before finishing cutting the first optical fiber 21 . That is, as shown in FIG. 1C, after the blade 4 cuts into the second optical fiber 22, the cutting of the first optical fiber 21 ends. Therefore, it is suppressed that the pressure applied to the first optical fiber 21 by the blade 4 decreases rapidly when the cutting of the first optical fiber 21 is about to end. Therefore, rattling of the blade 4 can be suppressed. Therefore, the first optical fiber 21 can be stably cut. As a result, the cut surface of the first optical fiber 21 can be flattened. Therefore, the first optical fiber 21 is excellent in optical connection reliability.

When the blade 4 cuts into the center of gravity of the first optical fiber 21 (refer to FIG. 2A ), or before that (refer to FIG. 2B and FIG. 2C ), if the blade 4 cuts into the second optical fiber 22, the vibration of the blade 4 can be suppressed, and The first optical fiber 21 can be cut more stably.

When the blade 4 cuts into the first core 23 of the first optical fiber 21 (see FIG. 2B ), or before that (FIG. 2C), if the blade 4 cuts into the second optical fiber 22, the vibration of the blade 4 can be suppressed, and the Further, the first optical fiber 21 is stably cut.

In this cutting method, since an example of the second wire is the second optical fiber 22, the first optical fiber 21 and the second optical fiber 22 can be cut at one time. That is, a plurality of optical fibers can be cut at one time.

According to this cutting set 2, in the second step, as shown in FIG. 1B, the blade 4 can cut into the second optical fiber 22 before cutting the first optical fiber 21. That is, as shown in FIG. 1C, after the blade 4 cuts into the second optical fiber 22, cutting of the first optical fiber 21 can be completed. Therefore, the first optical fiber 21 can be stably cut. Therefore, the cut surface of the first optical fiber 21 can be flattened. As a result, the first optical fiber 21 can be cut with excellent optical connection reliability.

[Modification of one embodiment] In the following modified examples, the same reference numerals are assigned to the same components and steps as those in the above-mentioned one embodiment, and detailed description thereof will be omitted. In addition, the modified example can exhibit the same operation and effect as that of the first embodiment except for the special notes. Furthermore, one embodiment and its modifications can be combined appropriately.

In one embodiment, the blade 4 is moved relative to the first optical fiber 21 and the second optical fiber 22 . In the modified example, the first optical fiber 21 and the second optical fiber 22 are moved relative to the blade 4 . In the modified example, the blade 4 cannot move, but the first optical fiber 21 and the second optical fiber 22 can move. The cutting set 2 can move together with the first optical fiber 21 and the second optical fiber 22 .

In a variation example, as shown in FIG. 4 , the direction along the edge of the blade 41 and the moving direction of the blade may be inclined. In this variation, for example, the direction in which the first optical fiber 21 and the second optical fiber 22 are arranged is the left-right direction. The direction along the blade edge 41 is a direction inclined to both the left and right directions and the up and down directions. The moving direction of the blade 4 is the up and down direction as shown by the solid line arrow in FIG. 4 , or the left and right direction as shown by the imaginary line arrow in FIG. 5 .

The moving direction of the blade 4 is an example of changing the vertical direction, which is better than the moving direction of the blade 4 being a changing example of the left and right directions. The reason is that the area of the blade 4 passing through the cross-section of each of the first optical fiber 21 and the second optical fiber 22 is reduced, thereby reducing damage to the first optical fiber 21 and the second optical fiber 22 .

In this regard, according to the method of one embodiment, as shown in FIGS. 1A to 1C, because the direction along the blade tip 41 is perpendicular to the moving direction of the blade 4, the first optical fiber line 21 and the second optical fiber The area of the blade 4 in the section of each of the wires 22 becomes smaller, thereby reducing damage to the first optical fiber wire 21 and the second optical fiber wire 22 . Therefore, an embodiment is preferable to the above-mentioned modification examples.

In one embodiment, the second optical fiber line 22 is given as an example of the second line, but the second line may be a dummy optical fiber not shown. The dummy optical fiber is configured so that optical transmission cannot be performed. Specifically, the dummy optical fiber may have the same first core 23 and first cladding 24 as the first optical fiber 21 . The ends in the extending direction of the dummy optical fibers are closed. Alternatively, the dummy optical fiber may not have the first core 23 and the first cladding 24 . Since the second line is a dummy optical fiber that does not transmit an optical signal, even if the cut surface of the dummy optical fiber is uneven instead of flat, it can be tolerated. Also, by using the second wire as a dummy optical fiber instead of the second optical fiber wire 22, the yield of the first optical fiber wire 21 at the time of manufacture can be improved.

As shown in FIG. 5 , the common blade 4 can be used to cut the first optical fiber 21 , the second optical fiber 22 and the dummy optical fiber 27 . The dummy optical fiber 27 is disposed on the opposite side of the first optical fiber 21 to the second optical fiber 22 . The arrangement of the dummy optical fiber 27 with respect to the second optical fiber 22 is the same as the arrangement of the second optical fiber 22 with respect to the first optical fiber 21 . In this modification example, the second optical fiber line 22 is an example of the second line and also an example of the first line. In the second step, the blade 4 cuts into the dummy optical fiber 27 before ending the cutting of the second optical fiber 22 . Thereby, in addition to the first optical fiber 21, the cut surface of the second optical fiber 22 can also be flattened.

The number of optical fibers may be a plural number of 3 or more. That is, adjacent arbitrary optical fibers are the first line and the second line. Furthermore, a dummy optical fiber may be arranged on the left side of the leftmost optical fiber among the plurality of optical fibers. In this case, the center of gravity of the dummy fiber is shifted downward from the center of gravity of the leftmost fiber.

In a variation, the blade is a rotating blade. The blade tip has a circular arc shape.

In a variation, the first optical fiber 21 and/or the second optical fiber 22 may have a rectangular cross section.

In addition, although the above-mentioned invention is provided as embodiment of the illustration of this invention, it is only an illustration at the end, and is not interpreted restrictively. Variations of the present invention that are obvious to those familiar with the technology in the technical field are also included in the scope of the patent application described later. [Industrial availability]

The cutting set is used for cutting the optical fiber.

2: cut off set 3: Hold the component 4: blade 5: Connector 6: ferrule 7: Configuration components 8: Guidance department 9: Ferrule fixing part 11: The first guide plate 12: The second guide plate 13: The first opening 14: The second opening 16: Liaison Department 17: Slot 1 (Slot) 18: Slot 2 (slot) 19: 1st Bottom 20: 2nd Bottom 21: The first optical fiber line 22: The second fiber optic cable 23: 1st core 24: 1st cladding 25: 2nd core 26: 2nd cladding 27: Dummy optical fiber 41: blade tip 60: Through hole P: distance R: Radius of the second optical fiber line 22 X-X: line β: tilt angle

1A to 1C are diagrams illustrating an embodiment of the cutting method of the present invention. Figure 1A is the first step. Fig. 1B is the second step, and it is the state in which the blade cuts into the second optical fiber. Fig. 1C is the second step, and it is the state where the blade cuts the first optical fiber line. 2A to 2C are the second steps corresponding to FIG. 1B. Fig. 2A is a state in which the blade cuts into the center of gravity of the first optical fiber. Fig. 2B is a state where the blade cuts into the first core of the first optical fiber. Fig. 2C is a state where the blade cuts into the first cladding layer above the first core. Fig. 3 is a sectional view of a cutting set and a first optical fiber according to an embodiment of the present invention. Fig. 3 is a sectional view along line X-X of Fig. 1A. Fig. 4 is a variation example in which the direction along the edge of the blade and the direction of movement of the blade are inclined. Fig. 5 is a variation example of cutting the first optical fiber, the second optical fiber, and the dummy optical fiber with a common blade.

2: cut off set

4: blade

7: Configuration components

17: Slot 1 (Slot)

18: Slot 2 (slot)

19: 1st Bottom

20: 2nd Bottom

21: The first optical fiber line

22: The second fiber optic cable

23: 1st core

24: 1st cladding

25: 2nd core

26: 2nd cladding

41: blade tip

P: distance

R: Radius of the second optical fiber line 22

X-X: line

β: tilt angle

Claims (7)

A method of cutting an optical fiber, comprising: a first step of preparing a first wire, which is an optical fiber including a core and a cladding covering the core, and a second wire arranged in parallel to the first wire; and The second step is to move the common blade relative to the first line and the second line to cut the first line and the second line; and In the second step, the blade cuts into the second wire before the cutting of the first wire is completed. The optical fiber cutting method according to claim 1, wherein the blade cuts into the second wire when the blade cuts into the center of gravity of the first wire or before. The method for cutting an optical fiber according to claim 1 or 2, wherein the blade cuts into the second wire when the blade cuts into the core of the first wire or before that. The method for cutting an optical fiber according to claim 1 or 2, wherein the blade has a straight blade tip, and The direction along the aforementioned blade tip is perpendicular to the moving direction of the aforementioned blade. The cutting method of an optical fiber according to claim 1 or 2, wherein the second line is an optical fiber. The method for cutting an optical fiber according to claim 1 or 2, wherein the second line is a dummy optical fiber. A cutting set, which is used to implement the cutting method of any one of claims 1 to 6, and includes: a holding member capable of penetrating and holding the first wire and the second wire; and The blade has a straight edge and can move in a direction inclined to the direction in which the first line and the second line held by the holding member are aligned, and can move in a direction along the edge of the blade. Move in the opposite direction.

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