JP2010113048A - Part and method for connecting optical fiber - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a simple optical fiber connecting part and a connecting method, for making PC (physical contact) connection with sealing performance. <P>SOLUTION: The forward end faces 21, 31 of optical fibers 20, 30 are abutted on each other in an optical fiber aligning part 11 only by stress caused by bending the optical fibers 20, 30 formed in optical fiber bending parts 14, 15, thereby making physical contact connection. Further, the optical fibers 20, 30 are fixed using an adhesive agent 40 in optical fiber bonding parts 12, 13, and the inside of the optical fiber aligning part 11 is sealed. The optical fiber connecting part 10 is thus structured so that the optical fibers are simply fixed without needing any large force for physical contact to enable connection with long-term reliability. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an optical fiber connecting component and a connecting method for permanently connecting an optical fiber.

  For permanent optical fiber connection, a refractive index matching agent is interposed between the fusion fiber connection that melts the optical fiber by the heat of discharge and the Fresnel reflection from the air to suppress the reflection. There is a mechanical splice that is connected by abutting with a V groove. Fusion splicing requires a high-voltage power supply, and mechanical splices have problems such as lack of sealing properties such as water intrusion.

Further, in the semi-permanent optical fiber connection, there is a connector connection for performing a physical contact connection (hereinafter referred to as a PC connection) in which an optical fiber and an optical fiber are directly butted and connected. In this case, PC connection is established by polishing the end face of the optical fiber fixed to the ferrule with an adhesive. [Patent Document 1]
Usually, in order to make a PC connection without polishing, it must be matched with a strong force, but a method for realizing a PC connection with a weak force has been proposed [Non-Patent Document 1]. This method is a method of realizing the PC connection between the cores by performing only the process of removing the ripple since the ripple is generated in the circumferential portion on the cleavage plane of the optical fiber.
JP 2000-310723 A Proceedings of 2008 IEICE General Conference, “Examination of on-site assembly PC connector that does not require fiber end polishing”, B-13-14

  However, the fusion splicing described above requires an expensive and large dedicated device, and is not simple and low cost. In addition, the mechanical splice that can be easily connected has a problem that it depends on the durability and environmental resistance of the refractive index matching agent because the refractive index matching agent is indispensable in the connecting portion.

  The present invention has been made in view of the above problems, and an object of the present invention is to realize a simple optical fiber connecting component and a connecting method capable of performing PC connection and having sealing properties.

  PC connection is performed only by the bending stress of the optical fiber or the pushing force by the pushing mechanism. Moreover, long-term reliability is realized by fixing the optical fiber using an adhesive. By these means, a long-term reliable connection is possible by simply fixing the optical fiber without requiring a large force for PC connection.

  By making the structure of the optical fiber connecting part a structure in which the bending stress or pushing force of the optical fiber continues to work, the return force and bending stress or pushing force generated at the end face of the optical fiber cancel each other out at the optical fiber bonding part. Even when the fixing force in the shear direction of the adhesive is less than the pressing force required for the PC, the PC connection can be maintained.

  According to the present invention, it is possible to easily fix an optical fiber and enable a permanent connection with sealing properties. Accordingly, it is not necessary to use an expensive and large dedicated device such as a fusion splicing, and since the refractive index matching agent is not present in the connection, durability and environmental resistance can be improved as compared with the mechanical splice.

  An embodiment of the present invention will be described below with reference to the drawings. In addition, this invention is not restrict | limited by this embodiment.

  FIG. 1 is a schematic external view showing an optical fiber connecting component according to the first embodiment of the present invention, FIG. 2 is a side sectional view showing the optical fiber connecting component according to the first embodiment of the present invention, and FIGS. It is a figure which shows the front-end | tip part of the optical fiber used in 1st Embodiment.

  1 and 2, reference numeral 10 denotes an optical fiber connecting part (hereinafter referred to as a connecting part), which is made of, for example, a synthetic resin and has a rectangular parallelepiped shape. In addition, an optical fiber guide path is formed in the length direction in the connection component 10, and an optical fiber aligning section 11 is formed in the center of the guide path. Furthermore, optical fiber bonding portions 12 and 13 are provided on both sides of the optical fiber aligning portion 11 along the guide path so as to be connected to the optical fiber aligning portion 11. Further, optical fiber bending portions 14 and 15 are provided adjacent to the optical fiber bonding portions 12 and 13 along the guide path, and further, the optical fiber gripping is adjacent to the optical fiber bending portions 14 and 15 along the guide path. Portions 16 and 17 are provided.

  The optical fiber aligning portion 11 is composed of an optical fiber guide hole 111 formed on the guide path, and the end faces (cut end faces) 21 and 31 of the two optical fibers 20 and 30 are abutted to each other. The 30 axial center positions are matched within a predetermined error range.

  The optical fiber bonding portions 12 and 13 have optical fiber guide holes 121 and 131 having one end connected to the optical fiber bending portions 14 and 15 and an adhesive provided along the guide path and connected to the other ends of the optical fiber guide holes 121 and 131. There are provided agent filling spaces 122, 132, intrusion paths 123, 133 for allowing the adhesive 40 to enter the adhesive filling spaces 122, 132 from the outside, and filling ports 124, 134 for filling the adhesive 40. After the optical fibers 20 and 30 are inserted into the connection component 10, the adhesive filling spaces 121 and 131 are filled with the adhesive 40, whereby the optical fibers 20 and 30 are bonded and fixed by the adhesive 40. The wall surfaces of the adhesive filling spaces 122 and 132 are tapered so that the optical fibers 20 and 30 are guided to the optical fiber aligning portion 11.

  The optical fiber bending portions 14 and 15 are formed by bending spaces 141 and 151 for bending a part of the optical fibers 20 and 30 arranged in the guide path with a predetermined radius of curvature, and guide grooves (not shown) formed on the guide path. And provided adjacent to the optical fiber bonding portions 12 and 13 along the guide path.

  The optical fiber gripping portions 16 and 17 are provided adjacent to the optical fiber bending portions 14 and 15 along the guide path, and include optical fiber insertion ports 161 and 171, in which the optical fibers 20 and 30 are connected. The optical fibers 20 and 30 arranged in the guide path are gripped while maintaining the bent state.

  When optical fiber connection using the optical fiber connection component 10 in the present embodiment is performed, the distal ends of the two optical fibers 20 and 30 to be connected from the end portions of the optical fiber deflecting portions 14 and 15 to the distal ends. The coating corresponding to the portion is removed, the end face is cleaved, and the optical fibers 20 and 30 that are tapered are inserted. The coating removal range is not limited as long as the coating is removed at the optical fiber aligning portion 11.

  Each of the two optical fibers 20 and 30 connected by the optical fiber connecting component 10 has the tip surfaces 21 and 31 that have been cleaved and cut to remove burrs and corners on the tip surface as described above. It is. The tip portions of the optical fibers 20 and 30 are tapered as shown in FIGS. 3 to 6, and the cross-sectional shape thereof is an n-gon (n is an integer of 3 or more) or a circle. FIG. 3 is a side view of the distal end portion of the optical fibers 20 and 30, and FIGS. 4 to 6 are plan views when viewed from the distal end side of the tapered optical fibers 20 and 30, respectively.

  When the optical fibers 20 and 30 are connected by the optical fiber connecting component 10, the tip end portion is tapered as described above, and the tip end of one optical fiber 20 is inserted from the insertion port 161 into the guide hole and the guide groove. Along the center of the optical fiber aligning portion 11. Further, the tip of the other optical fiber 30 is inserted from the insertion port 171 and reaches the center of the optical fiber aligning portion 11 along the guide hole and the guide groove. It is abutted against the front end surface 21 of the fiber 20.

  At this time, the inserted optical fibers 20 and 30 are guided to the optical fiber aligning portion 11 along a guide path such as a guide hole or a guide groove, and are aligned to an axial deviation amount sufficient for connection. The fiber end faces 21 and 31 protrude from the center of the optical fiber aligning portion 11 by a predetermined amount. Two optical fibers are similarly inserted facing each other, and one or both of the optical fibers 20 and 30 are bent, and the tip surfaces 21 and 31 of the optical fibers 20 and 30 are PC-connected.

  That is, when the two optical fibers 20 and 30 are pushed in, one of the optical fibers 20 is bent in the space 141 in the optical fiber bent portion 14 by the pushing force, and the other optical fiber 30 is bent in the optical fiber bent portion 15. In FIG. In addition, it is preferable that the curvature radius of the bending of the optical fibers 20 and 30 is 2.5 mm or more. This is because if the optical fibers 20 and 30 are bent to a small diameter, the loss increases and the lifetime is shortened. Assuming that the service period is 20 years, a minimum fracture probability is obtained when a quartz fiber with a cladding diameter of 125 mmφ is used. This is because the bending radius is said to be 2.5 mm or more in order to maintain the above.

  In this manner, in the state where the two optical fibers 20 and 30 are bent in the optical fiber bending portions 14 and 15, the two optical fibers 20 and 30 are held by the optical fiber holding portions 16 and 17, respectively. 30 bent states are maintained.

  Since each of the optical fibers 20 and 30 is gripped by the optical fiber gripping portions 16 and 17, the distal end surface 21 of the optical fiber 20 and the distal end surface of the optical fiber 30 are caused by the stress generated by the bending formed in the optical fibers 20 and 30. 31 is strongly pressed in the optical fiber aligning part 11, and the front end surfaces 21 and 31 are abutted and PC-connected. Further, the optical fiber aligning portion 11 is sealed with an adhesive 40 filled in the optical fiber bonding portions 12 and 13.

  In this manner, the adhesive filling spaces 122 and 132 of the optical fiber bonding portions 12 and 13 are filled with the adhesive 40 in a state where the end faces 21 and 31 of the two optical fibers 20 and 30 are abutted with each other. The optical fibers 20 and 30 are bonded and fixed to the optical fiber bonding portions 12 and 13 by being cured. Thereby, the front end surfaces 21 and 31 of the optical fibers 20 and 30 are connected to two.

  In addition, the filling of the adhesive 40 into the optical fiber bonding portions 12 and 13 may be performed before the bending is formed. That is, since the adhesive 40 usually takes a predetermined time to be cured, the optical fibers 20 and 30 are bent after the adhesive 40 is filled to create a PC connection state of the optical fibers 20 and 30 and then bonded. A procedure in which the agent 40 is cured may be used.

  As described above, since the optical fiber connecting component 10 of the present embodiment has a structure in which the bending stress of the optical fiber continues to work, the return force and the bending stress generated at the end face of the optical fiber cancel each other at the optical fiber bonding portions 12 and 13. Therefore, even when the fixing force in the shearing direction of the adhesive 40 is less than the pressing force necessary for PC connection, the PC connection can be maintained. Moreover, long-term reliability can be realized by fixing the optical fibers 20 and 30 using the adhesive 40. As a result, by using the optical fiber connection component 10 of the present embodiment, the optical fibers 20 and 30 can be simply fixed and a long-term reliable connection is possible without requiring a large force for PC connection. It can be.

  Therefore, by using the optical fiber connection component 10 of the present embodiment, it is possible to easily fix the optical fiber and enable a permanent connection with a sealing property, as in the conventional fusion connection. It is not necessary to use an expensive and large dedicated device, and since no refractive index matching agent is interposed in the connection, durability and environmental resistance can be improved as compared with the mechanical splice.

  The optical fiber aligning portion 11 and the optical fiber bonding portions 12 and 13 may be configured by individual members, or may be integrally formed.

  Further, as shown in FIG. 7, the optical fiber aligning portion 11 is provided with a filling space 112 of the adhesive 40 and an adhesive intrusion passage 113 and an adhesive filling port 114 leading from the filling space 112 to the external space. A portion where the end faces 21 and 31 of the fibers 20 and 30 are abutted and connected may be fixed with the adhesive 40.

  Next, an optical fiber connecting component in the second embodiment of the present invention will be described.

  8 to 11 are views showing an optical fiber connecting component according to a second embodiment of the present invention. FIG. 8 is a schematic external view, FIG. 9 is a side sectional view, FIG. 10 is an exploded perspective view, and FIG. It is side surface sectional drawing. In these drawings, the same components as those in the first embodiment are denoted by the same reference numerals.

  The difference between the second embodiment and the first embodiment described above is that the optical fiber aligning portion 11 and the optical fiber bonding portions 12 and 13 are connected to each other and can be separated and removed from the other portions. It is that.

  In other words, the optical fiber connecting component 50 is configured by fitting the base 51, the connecting member 52, and the two gripping members 53 and 54.

  The base 51 is made of a rectangular parallelepiped member, and a fitting groove is formed in the center of the upper surface along the length direction. A fitting portion 511 for fitting the connection member 52 is formed at the center of the fitting groove, and fitting portions 512 and 513 for fitting the gripping members 53 and 54 are formed at both ends of the fitting groove. . Further, guide grooves (guide paths) (not shown) for guiding the optical fibers 20 and 30 are formed on the bottom surfaces of the fitting grooves 512 and 513 for fitting the gripping members 53 and 54, and are formed on the connection member 52. The optical fibers 20 and 30 are guided to the entrance side guide paths of the optical fiber bonding portions 12 and 13.

  The connection member 51 is formed of a rectangular parallelepiped member, and an optical fiber guide path is formed in the length direction inside the connection member 51, and the optical fiber aligning portion 11 is formed at the center of the guide path. Further, optical fiber bonding portions 12 and 13 are formed on both sides of the optical fiber aligning portion 11 along the guide path so as to be connected to the optical fiber aligning portion 11.

  The optical fiber aligning portion 11 is composed of a guide hole 111 of an optical fiber formed on the guide path, the end faces 21 and 31 of the two optical fibers 20 and 30 are abutted, and the axial centers of the respective optical fibers 20 and 30 are aligned. The positions are matched within a predetermined error range.

  The optical fiber bonding portions 12 and 13 have optical fiber guide holes 121 and 131 having one end connected to the optical fiber bending portions 14 and 15 and an adhesive provided along the guide path and connected to the other ends of the optical fiber guide holes 121 and 131. There are provided agent filling spaces 122 and 132, intrusion passages 123 and 133 for allowing the adhesive to enter the adhesive filling spaces 122 and 132, and filling ports 124 and 134 for filling the adhesive. After the optical fibers 20 and 30 are inserted into the connection component 10, the adhesive filling spaces 121 and 131 are filled with the adhesive, whereby the optical fibers 20 and 30 are bonded and fixed by the adhesive. The wall surfaces of the adhesive filling spaces 122 and 132 are tapered so that the optical fibers 20 and 30 are guided to the optical fiber aligning portion 11.

The gripping members 53 and 54 are members in which a plate-like member is bent at a right angle so that a side cross-section has an L shape. The other flat plate portions 532 and 542 are fitted to the fitting portions 512 and 513 so that the outer surfaces of the flat plate portions 532 and 542 are flush with the end surface of the base 51 in the length direction. That is,
In order to take out the connection member 52 from the base 51 after bonding the optical fiber, the gripping members 53 and 54 are formed to be removable from the base 51.

  In this state where the gripping members 53 and 54 are fitted to the fitting portions 512 and 513, spaces 141 and 151 of the optical fiber bending portions 14 and 15 are formed between the gripping members 53 and 54 and the base 51, and the gripping member Optical fiber gripping portions 16 and 17 are formed by the other flat plate portions 532 and 542 of 53 and 54 and the base 51.

  The optical fiber aligning portion 11 and the optical fiber bonding portions 12 and 13 only need to be connected to each other, and may be composed of separate members, or may be integrally formed. There may be.

  When the optical fiber connection using the optical fiber connection component 50 in the present embodiment is performed, the procedure is substantially the same as in the first embodiment described above. That is, the coating on the tip is removed, the end face is cleaved, and the optical fibers 20 and 30 with the tip tapered are inserted from the ends of the optical fiber grips 16 and 17 into the connection component 50 along the guide path. . The coating removal range is not limited as long as the coating removal is performed in the optical fiber aligning portion 11. The inserted optical fibers 20 and 30 are guided to the optical fiber aligning portion 11 along the guide path, and are aligned to an amount of axial deviation sufficient for connection. Finally, the optical fiber end faces 21 and 31 are aligned with the optical fibers. A predetermined amount protrudes from the center of the portion 11. Opposing optical fibers 20 and 30 are inserted in the same manner, and one or both optical fibers 20 and 30 are bent and PC-connected. In this state, the optical fiber bonding portions 12 and 13 are filled with the adhesive 40, and the optical fibers 20 and 30 are held and fixed. At this time, it is preferable that the curvature radius in the optical fiber bending parts 14 and 15 of the optical fibers 20 and 30 is 2.5 mm or more as described above.

  In addition, the filling of the adhesive 40 into the optical fiber bonding portions 12 and 13 may be performed before the bending is formed. That is, since the adhesive 40 normally takes a predetermined time to be cured, after the adhesive 40 is filled, the optical fibers 20 and 30 form a PC connection state by forming a bend, and thereafter the adhesive 40 is cured. It may be a procedure that occurs.

  In FIG. 11, after gripping and fixing both optical fibers 20 and 30 with the adhesive 40, the detachable grip members 53 and 54 are removed from the base 51 to expose the optical fibers 20 and 30, and then the connection member 52 is attached. It shows the state when it is taken out. Thus, by removing only the connection member 52, the part shape at the time of actual use can be reduced in size.

  Moreover, as shown in FIG. 12, durability and reliability can be improved by sealing the removed connection member 52 with a shrink member 60 such as a heat shrink sleeve.

  Further, by using the contraction member 60 as shown in FIG. 12, the optical fibers 20 and 30 can be PC-connected using only the connection member 52. That is, as shown in FIG. 12, the optical fibers 20 and 30 are inserted into the connection member 52 and the optical fiber bonding portions 12 and 13 are filled with the adhesive 40, that is, before the adhesive 40 is cured. The member 52 is sealed by a shrink member 60 such as a heat shrink sleeve to shrink the shrink member 60. As a result, the contraction member 60 contracts in a state where the optical fibers 20 and 30 are gripped by the end portions 61 and 62 of the contraction member 60, so that the optical fibers 20 and 30 are centered using the contractibility of the contraction member 60. The optical fibers 20 and 30 can be PC-connected. In this example, the optical fiber pushing mechanism is configured by the contraction member 60, the optical fiber gripping portions 16 and 17 are configured by the end portions 61 and 62 of the contraction member 60, and the connection member 52 and the end portions 61 and 62 of the contraction member 60. Optical fiber flexures 14 and 15 are formed by the space between the two.

  Moreover, you may comprise an optical fiber pushing mechanism using a spring as shown in FIG. In this case, the springs 142 and 152 whose one ends are connected to the lengthwise ends of the connection member 52, the gripping members 162 and 172 connected to the other ends of the springs 142 and 152, and the tubular member 70 are used. In this example, the optical fiber pushing mechanism is constituted by springs 142 and 152.

  When the optical fibers 20 and 30 are connected using the optical fiber connecting parts having the above-described configuration, immediately after the optical fibers 20 and 30 are inserted into the connection member 52 and the optical fiber bonding portions 12 and 13 are filled with the adhesive 40 In other words, before the adhesive 40 is cured, the optical fibers 20 and 30 are gripped by the gripping members 162 and 172 with the springs 142 and 152 extended, and the entirety thereof is inserted into the cylindrical member 70. As a result, the springs 142 and 152 give the gripping members 162 and 172 a force for returning to the original state, so that the gripping members 162 and 172 slide toward the connection member 52 along the inner surface of the tubular member 70, and the connection member 52 and the gripping members 162 and 172 Since the optical fibers 20 and 30 are bent between each of the optical fibers 20 and 30, and the optical fibers 20 and 30 are pushed toward the optical fiber aligning portion 11, the end faces 21 and 31 of the optical fibers 20 and 30 are pressed. PC connection.

  Further, as shown in FIG. 14, the connecting member 52 to which the optical fibers 20 and 30 are connected and the cylindrical member 70 into which the entire gripping members 162 and 172 are inserted are covered and sealed by a shrinking member 60 such as a heat shrink sleeve. , Durability and reliability can be improved.

  In the above embodiment, the optical fiber pushing mechanism is configured using the contraction sleeve 60 or the springs 142 and 152, but is not limited thereto, and may be configured using other types of springs such as a leaf spring. good.

1 is a schematic external view showing an optical fiber connecting component according to a first embodiment of the present invention. Side surface sectional drawing which shows the optical fiber connection component in 1st Embodiment of this invention The figure which shows the front-end | tip part of the optical fiber used in 1st Embodiment of this invention The figure which shows the front-end | tip part of the optical fiber used in 1st Embodiment of this invention The figure which shows the front-end | tip part of the optical fiber used in 1st Embodiment of this invention The figure which shows the front-end | tip part of the optical fiber used in 1st Embodiment of this invention Side surface sectional drawing which shows the other Example in 1st Embodiment of this invention. Schematic external view showing an optical fiber connecting component in a second embodiment of the present invention Side surface sectional view which shows the optical fiber connection component in 2nd Embodiment of this invention The disassembled perspective view which shows the optical fiber connection component in 2nd Embodiment of this invention. Side surface sectional drawing of the principal part of the optical fiber connection component in 2nd Embodiment of this invention Side surface sectional drawing which shows the other Example of the optical fiber connection component in 2nd Embodiment of this invention. Side surface sectional drawing which shows the other Example of the optical fiber connection component in 2nd Embodiment of this invention. Side surface sectional drawing which shows the other Example of the optical fiber connection component in 2nd Embodiment of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Optical fiber connection part, 11 ... Optical fiber alignment part, 12, 13 ... Optical fiber adhesion part, 14, 15 ... Optical fiber bending part, 16, 17 ... Optical fiber holding part, 20, 30 ... Optical fiber, 21 , 31 ... distal end surface, 40 ... adhesive, 50 ... optical fiber connection part, 51 ... base, 52 ... connection member, 53, 54 ... gripping member, 60 ... contraction member, 111 ... guide hole, 112 ... filled with adhesive Space, 113 ... Adhesive entry path, 114 ... Adhesive filling port, 121,131 ... Guide hole, 122,132 ... Adhesive filling space, 123,133 ... Intrusion passage, 124,134 ... Filling port, 141,151 ... Space, 161,171 ... Optical fiber insertion port, 511 ... fitting part, 512,513 ... fitting part, 531,532,541,542 ... flat plate part, 142,152 ... spring, 162,172 ... gripping member.

Claims (10)

An optical fiber connecting part for connecting the cut end faces of two optical fibers together,
A guide path comprising at least one of a guide hole or a guide groove for guiding two optical fibers;
An optical fiber aligning portion that is provided at the center in the length direction of the guide path and that matches the cut end faces of the two optical fibers so that the axial positions of the optical fibers coincide with each other within a predetermined error range. When,
An intrusion path through which an adhesive enters from the outside and a guide path for filling the adhesive are provided on both sides of the optical fiber alignment section along the guide path and connected to the optical fiber alignment section. Two optical fiber bonding portions for adhering and fixing an optical fiber disposed in the guide path to the guide path with an adhesive;
A space is provided adjacent to at least one side of the optical fiber bonding portion along the guide path and for bending a part of the optical fiber disposed in the guide path with a predetermined radius of curvature. An optical fiber flexure having
While being provided adjacent to the optical fiber bonding portion or the optical fiber bending portion along the guide path, the optical fiber insertion port is provided, and the optical fiber is kept bent in the optical fiber bending portion. An optical fiber connecting component comprising: two optical fiber gripping portions for gripping the optical fiber disposed in the guide path. The optical fiber gripping part is
A gripping member capable of moving in the direction of the optical fiber aligning portion while gripping the optical fiber;
The optical fiber connecting component according to claim 1, further comprising: an optical fiber pushing mechanism that applies a force to the gripping member to move the gripping member toward the optical fiber alignment unit. The optical fiber bending portion and the optical fiber gripping portion are formed so as to be able to remove the optical fiber disposed on the guide path by exposing the entire guide path to the outside.
The optical fiber aligning portion and the two optical fiber bonding portions are detached from the optical fiber bending portion and the optical fiber gripping portion in a state where the optical fiber aligning portion and the two optical fiber bonding portions are connected and fixed. The optical fiber connecting component according to claim 1, wherein the optical fiber connecting component is formed. An adhesive filling space and an adhesive intrusion path leading from the filling space to the external space are provided so that a portion where the two optical fibers are abutted and connected in the optical fiber aligning portion can be fixed with an adhesive. The optical fiber connecting part according to any one of claims 1 to 3, wherein the optical fiber connecting part is formed in an optical fiber aligning portion. The optical fiber bonding portion is characterized in that a wall surface of the adhesive filling space is formed in a tapered shape so as to guide the optical fiber from the adhesive filling space to a guide path leading to the optical fiber aligning portion. The optical fiber connection component according to any one of claims 1 to 4. An optical fiber connection method using the optical fiber connection component according to any one of claims 1 to 5,
Insert each of the two optical fibers that have been cleaved and cut to remove the burrs and corners of the tip surface from different optical fiber insertion ports of the optical fiber connection parts,
In a state where the tip surfaces of the two optical fibers are in contact with each other in the optical fiber aligning portion, the optical fiber is further pushed so that the optical fiber is bent in the space of the optical fiber bending portion,
An optical fiber connecting method, wherein the optical fiber is bonded and fixed by filling an adhesive filling space in the optical fiber bonding portion with the optical fiber held by the optical fiber holding portion. An optical fiber connection method using the optical fiber connection component according to claim 2,
Insert each of the two optical fibers that have been cleaved and cut to remove the burrs and corners of the tip surface from different optical fiber insertion ports of the optical fiber connection parts,
In a state where the front end surfaces of the two optical fibers are in contact with each other in the alignment portion, the optical fiber is further pushed so that the optical fiber is bent in the space of the optical fiber bending portion,
In a state where the optical fiber is gripped by the optical fiber gripping portion, after filling the adhesive into the adhesive filling space of the optical fiber bonding portion,
An optical fiber connection method comprising: covering the entirety with a contraction member and contracting the contraction member. An optical fiber connection method using the optical fiber connection component according to claim 3,
Insert each of the two optical fibers that have been cleaved and cut to remove the burrs and corners of the tip surface from different optical fiber insertion ports of the optical fiber connection parts,
In a state where the front end surfaces of the two optical fibers are in contact with each other in the alignment portion, the optical fiber is further pushed so that the optical fiber is bent in the space of the optical fiber bending portion,
In a state where the optical fiber is gripped by the optical fiber gripping portion, after filling the adhesive into the adhesive filling space of the optical fiber bonding portion,
An optical fiber connection method comprising: removing an optical fiber aligning portion and an optical fiber bonding portion, which are fixedly connected, from an optical fiber bending portion and an optical fiber gripping portion. The optical fiber connecting method according to claim 8, wherein the contracting member is contracted after covering the removed optical fiber aligning portion and the optical fiber bonding portion with the contracting member. An optical fiber connection method using the optical fiber connection component according to claim 4,
Insert each of the two optical fibers that have been cleaved and cut to remove the burrs and corners of the tip surface from different optical fiber insertion ports of the optical fiber connection parts,
In a state where the front end surfaces of the two optical fibers are in contact with each other in the alignment portion, the optical fiber is further pushed so that the optical fiber is bent in the space of the optical fiber bending portion,
In a state where the optical fiber is gripped by the optical fiber gripping portion, after filling the adhesive filling space in the adhesive filling space of the optical fiber bonding portion and fixing the optical fiber,
An optical fiber connecting method, wherein an adhesive is filled in a filling space of an optical fiber aligning portion, and a portion where two optical fibers are abutted and connected is fixed with an adhesive.

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