CN112955795B - Ferrule, ferrule with optical fiber, and method for manufacturing ferrule with optical fiber - Google Patents
Ferrule, ferrule with optical fiber, and method for manufacturing ferrule with optical fiber Download PDFInfo
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- CN112955795B CN112955795B CN201980071133.9A CN201980071133A CN112955795B CN 112955795 B CN112955795 B CN 112955795B CN 201980071133 A CN201980071133 A CN 201980071133A CN 112955795 B CN112955795 B CN 112955795B
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- side guide
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Abstract
The optical fiber connector can prevent the optical fiber hole of the ferrule body and the lens part of the lens plate from being misaligned when the guide pin holes of the ferrule body and the lens plate are not matched with each other in distance. The ferrule is characterized by comprising: a ferrule body having a 1 st body side guide hole for inserting a 1 st guide pin, a 2 nd body side guide hole for inserting a 2 nd guide pin, and a fiber holding portion for holding an optical fiber; and a lens plate including a 1 st-plate side guide hole for inserting the 1 st guide pin, a 2 nd-plate side guide hole for inserting the 2 nd guide pin, a lens portion, and an abutment surface for abutting against an end surface of the optical fiber, wherein the 1 st body side guide hole and the 1 st-plate side guide hole are formed so that the 1 st guide pin is fitted, either the 2 nd body side guide hole or the 2 nd-plate side guide hole is formed so that the 2 nd guide pin is fitted, and an inner diameter of the other of the 2 nd body side guide hole and the 2 nd-plate side guide hole is formed larger than an inner diameter at the time of fitting the 2 nd guide pin, the ferrule body includes a body side positioning portion, the lens plate includes a plate side positioning portion, and the body side positioning portion and the plate side positioning portion are brought into contact with each other in a direction perpendicular to a plane including a center axis of the 1 st-plate side guide hole and a center axis of the 2 nd-plate side guide hole, the lens plate is positioned with respect to the ferrule body.
Description
Technical Field
The invention relates to a ferrule, a ferrule with an optical fiber, and a method for manufacturing the ferrule with the optical fiber.
Background
Known methods include: a technique of a so-called lens connector in which optical fibers held by respective ferrules are optically connected to each other by facing the ferrules having lenses on end surfaces thereof to each other. As such a lens connector, a configuration is known in which a ferrule body holding an end portion of an optical fiber and a lens plate provided with a lens are separately configured. For example, patent document 1 discloses a ferrule structure in which an optical fiber hole of a ferrule body and a lens portion of a lens plate are accurately aligned via two guide pins.
Patent document 1: japanese patent laid-open publication No. 2018-92152
As described in patent document 1, in the ferrule body, the mutual positional relationship between two portions of the optical fiber hole and the guide pin hole is formed with high accuracy, and in the lens plate, the mutual positional relationship between two portions of the lens portion and the guide pin hole is formed with high accuracy. However, when the pitch between the guide pin hole of the ferrule body and the guide pin hole of the lens plate is not matched, the ferrule body and the lens plate may be deformed by insertion of the guide pin, and the optical fiber hole of the ferrule body and the lens portion of the lens plate may be displaced from each other.
Disclosure of Invention
The invention aims to prevent the situation that the optical fiber hole of the ferrule body and the lens part of the lens plate are displaced when the guide pin holes of the ferrule body and the lens plate are not matched with each other in distance.
In some embodiments of the present invention, a ferrule includes: a ferrule body having a 1 st body side guide hole for inserting a 1 st guide pin, a 2 nd body side guide hole for inserting a 2 nd guide pin, and a fiber holding portion for holding an optical fiber; and a lens plate including a 1 st-plate side guide hole for inserting the 1 st guide pin, a 2 nd-plate side guide hole for inserting the 2 nd guide pin, a lens portion, and an abutment surface for abutting against an end surface of the optical fiber, wherein the 1 st body side guide hole and the 1 st-plate side guide hole are formed so that the 1 st guide pin is fitted, either the 2 nd body side guide hole or the 2 nd-plate side guide hole is formed so that the 2 nd guide pin is fitted, and an inner diameter of the other of the 2 nd body side guide hole and the 2 nd-plate side guide hole is formed larger than an inner diameter at the time of fitting the 2 nd guide pin, the ferrule body includes a body side positioning portion, the lens plate includes a plate side positioning portion, and the body side positioning portion and the plate side positioning portion are brought into contact with each other in a direction perpendicular to a plane including a center axis of the 1 st-plate side guide hole and a center axis of the 2 nd-plate side guide hole, the lens plate is positioned with respect to the ferrule body.
Other features of the present invention will become apparent from the description of the specification and the drawings.
According to several embodiments of the present invention, it is possible to suppress the misalignment of the optical fiber hole of the ferrule body and the lens portion of the lens plate in the case where the guide pin holes of the ferrule body and the lens plate are not pitch-matched with each other.
Drawings
Fig. 1A is an overall perspective view of the ferrule structure 10 according to the present embodiment. Fig. 1B is an exploded perspective view of the ferrule structure 10 according to the present embodiment.
Fig. 2A is an exploded perspective view of the ferrule structure 10 of the present embodiment, as viewed from the lower side. Fig. 2B is a sectional view of the ferrule structure 10 with an optical fiber according to the present embodiment.
Fig. 3A and 3B are explanatory views showing a state in which the ferrule body 11 and the lens plate 12 of the ferrule structure 100 of the comparative example are assembled via the guide pins 13.
Fig. 4A and 4B are cross-sectional explanatory views showing a state in which the guide pin 13 is inserted into the main body side guide hole 21 and the plate side guide hole 32 according to the present embodiment.
Fig. 5 is a flowchart of a method (assembly step) for manufacturing the ferrule structure 10 with an optical fiber according to the present embodiment.
Fig. 6A to 6D are explanatory views showing a state in which the optical fiber hole 22 of the ferrule body 11 and the lens portion 33 of the lens plate 12 according to the present embodiment are aligned.
Detailed Description
At least the following matters will become clear from the description of the specification and the drawings described later.
A ferrule is characterized by comprising: a ferrule body having a 1 st body side guide hole for inserting a 1 st guide pin, a 2 nd body side guide hole for inserting a 2 nd guide pin, and a fiber holding portion for holding an optical fiber; and a lens plate including a 1 st plate side guide hole for inserting the 1 st guide pin, a 2 nd plate side guide hole for inserting the 2 nd guide pin, a lens portion, and an abutment surface for abutting an end surface of the optical fiber, wherein the 1 st body side guide hole and the 1 st plate side guide hole are formed so that the 1 st guide pin is fitted, either the 2 nd body side guide hole or the 2 nd plate side guide hole is formed so that the 2 nd guide pin is fitted, and an inner diameter of the other of the 2 nd body side guide hole and the 2 nd plate side guide hole is formed larger than an inner diameter at the time of fitting the 2 nd guide pin, the ferrule body includes a body side positioning portion, the lens plate includes a plate side positioning portion which is brought into contact with the body side positioning portion so as to be in a direction perpendicular to a plane including a center axis of the 1 st plate side guide hole and a center axis of the 2 nd plate side guide hole, the lens plate is positioned with respect to the ferrule body. According to such a ferrule, it is possible to suppress the misalignment between the optical fiber hole of the ferrule body and the lens portion of the lens plate when the pitches of the ferrule body and the guide pin hole of the lens plate are not matched.
Preferably, the 2 nd main body side guide hole is formed to fit the 2 nd guide pin, and an inner diameter of the 2 nd plate side guide hole is formed to be larger than an inner diameter of the 2 nd main body side guide hole. This can prevent the optical fiber hole of the ferrule body and the lens portion of the lens plate from being misaligned when the pitches of the guide pin holes of the ferrule body and the lens plate are not matched.
A ferrule with an optical fiber, comprising: an optical fiber; a ferrule body having a 1 st body side guide hole for inserting a 1 st guide pin, a 2 nd body side guide hole for inserting a 2 nd guide pin, and a fiber holding portion for holding the optical fiber; and a lens plate including a 1 st plate side guide hole for inserting the 1 st guide pin, a 2 nd plate side guide hole for inserting the 2 nd guide pin, a lens portion, and an abutment surface for abutting an end surface of the optical fiber, wherein the 1 st body side guide hole and the 1 st plate side guide hole are formed so that the 1 st guide pin is fitted, either the 2 nd body side guide hole or the 2 nd plate side guide hole is formed so that the 2 nd guide pin is fitted, and an inner diameter of the other of the 2 nd body side guide hole and the 2 nd plate side guide hole is formed larger than an inner diameter at the time of fitting the 2 nd guide pin, the ferrule body includes a body side positioning portion, the lens plate includes a plate side positioning portion which is brought into contact with the plate side positioning portion so as to be in a direction perpendicular to a plane including a center axis of the 1 st plate side guide hole and a center axis of the 2 nd plate side guide hole, the lens plate is positioned with respect to the ferrule body. According to such a ferrule with an optical fiber, it is possible to suppress the misalignment between the optical fiber hole of the ferrule body and the lens portion of the lens plate when the pitches of the guide pin holes of the ferrule body and the lens plate are not matched.
It is clear that a method for manufacturing a ferrule with an optical fiber, the ferrule with an optical fiber comprising: an optical fiber; a ferrule body having a 1 st body side guide hole for inserting a 1 st guide pin, a 2 nd body side guide hole for inserting a 2 nd guide pin, and a fiber holding portion for holding the optical fiber; and a lens plate having a 1 st plate side guide hole for inserting the 1 st guide pin, a 2 nd plate side guide hole for inserting the 2 nd guide pin, a lens portion, and an abutment surface for abutting an end surface of the optical fiber, wherein the 1 st body side guide hole and the 1 st plate side guide hole are formed so that the 1 st guide pin is fitted, either the 2 nd body side guide hole or the 2 nd plate side guide hole is formed so that the 2 nd guide pin is fitted, and the inner diameter of the other of the 2 nd body side guide hole and the 2 nd plate side guide hole is formed larger than the inner diameter at the time of the 2 nd fitting, the ferrule body has a body side positioning portion, the lens plate has a body side positioning portion, and the 1 st guide pin and the 2 nd guide pin are inserted into the 1 st body side guide hole and the 2 nd body side guide hole, respectively, the 1 st guide pin and the 2 nd guide pin are inserted into the 1 st plate side guide hole and the 2 nd plate side guide hole, respectively, and the body side positioning portion is brought into contact with the plate side positioning portion, whereby the lens plate is positioned with respect to the ferrule body in a direction perpendicular to a plane including a center axis of the 1 st plate side guide hole and a center axis of the 2 nd plate side guide hole. According to the method for manufacturing the ferrule with the optical fiber, the optical fiber hole of the ferrule body and the lens portion of the lens plate can be prevented from being displaced when the pitches of the guide pin holes of the ferrule body and the lens plate are not matched.
In this embodiment, the present invention is not limited to the embodiment
< overview of ferrule Structure 10 >
Fig. 1A is an overall perspective view of the ferrule structure 10 according to the present embodiment. Fig. 1B is an exploded perspective view of the ferrule structure 10 according to the present embodiment. Fig. 2A is an exploded perspective view of the ferrule structure 10 of the present embodiment, as viewed from the lower side. Fig. 2B is a sectional view of the ferrule structure 10 with an optical fiber according to the present embodiment. Fig. 2B is a cross-sectional view taken along a plane perpendicular to the left-right direction at the position of the center axis of the optical fiber 1.
In the following description, each direction is defined as shown in the drawings. That is, the direction of the optical fiber hole 22 is referred to as the "front-rear direction", the side of the optical fiber 1 inserted into the optical fiber hole 22 closer to the end face or the side of the lens plate 12 viewed from the ferrule body 11 is referred to as the "front", and the opposite side is referred to as the "rear". The arrangement direction of the two body side guide holes 21 (body side guide hole 21A and body side guide hole 21B) or the arrangement direction of the two board side guide holes 32 (board side guide hole 32A and board side guide hole 32B) is defined as the "left-right direction", the right side when the front side is viewed from the rear side is defined as the "right", and the opposite side is defined as the "left". In addition, a direction perpendicular to the front-rear direction and the left-right direction is referred to as an "up-down direction".
The ferrule structure 10 is a member for holding an end of the optical fiber 1 and optically connecting the optical fiber 1 to another optical component. The ferrule structure 10 is sometimes referred to as a "ferrule" only. The ferrule structure 10 includes a ferrule body 11 and a lens plate 12.
The ferrule body 11 is a member that holds the end portion of the optical fiber 1. The ferrule body 11 has two body-side guide holes 21 (a body-side guide hole 21A and a body-side guide hole 21B), a fiber hole 22, a fiber insertion port 23, an adhesive filling portion 24, and a body-side positioning portion 25.
The ferrule body 11 has a structure almost similar to that of an MT type optical connector (an F12 type optical connector established in JIS C5981, MT: mechanical Transferable), for example. However, in the present embodiment, as will be described later, the end face 3 of the optical fiber 1 protrudes from the front end face 20 of the ferrule body 11 (the opening face of the optical fiber hole 22), and the end face of the ferrule and the end face of the optical fiber are not polished. In addition, in a general MT optical connector, the end face of the optical fiber is exposed at the end face of the ferrule, but in the present embodiment, the lens plate 12 is disposed on the front side of the ferrule body 11, and the end face 3 of the optical fiber 1 is in a state of being in contact with the lens plate 12, and therefore, the end face of the optical fiber is not exposed to the outside.
The two main body side guide holes 21 (main body side guide hole 21A and main body side guide hole 21B) are holes for inserting the guide pins 13 (not shown in fig. 1A to 2B, refer to fig. 4A and 4B described later). As will be described later, the body-side guide hole 21 is also used for positioning between the optical fiber hole 22 of the ferrule body 11 and the lens portion 33 of the lens plate 12. The body-side guide hole 21 penetrates the ferrule body 11 in the front-rear direction, and two body-side guide holes 21 are opened in the front end face 20 of the ferrule body 11. The two main body side guide holes 21 are arranged at a distance in the left-right direction from each other with the plurality of optical fiber holes 22 therebetween. Details of the two body-side guide holes 21 will be described later.
The optical fiber hole 22 is a hole for inserting the optical fiber 1. In addition, the optical fiber hole 22 is a hole for positioning the optical fiber 1. Therefore, the fiber holes 22 are formed with high accuracy with respect to the body-side guide holes 21. The optical fiber hole 22 penetrates between the distal end surface 20 and the adhesive filling portion 24, and the optical fiber hole 22 is opened in the distal end surface 20 of the ferrule body 11. The bare optical fiber from which the coating is removed from the optical fiber core is inserted into the optical fiber hole 22. The optical fiber holes 22 are formed in the front-rear direction.
The ferrule body 11 of the present embodiment is formed with a plurality of optical fiber holes 22. In the present embodiment, the plurality of fiber holes 22 are arranged in the left-right direction. The optical fibers 1 constituting the optical fiber ribbon (optical fiber ribbon) are inserted into the optical fiber holes 22 arranged in the left-right direction, respectively. The number of the optical fiber holes 22 may not be plural. For example, only one fiber hole 22 may be formed. In this case, the optical fibers 1 inserted into the fiber holes 22 do not constitute an optical fiber ribbon (optical fiber ribbon).
The fiber insertion port 23 is an opening formed in the rear end surface of the ferrule body 11. The optical fiber 1 is inserted into the ferrule body 11 through the fiber insertion port 23. Since there is a case where a boot (not shown) is inserted into the ferrule body 11, the fiber insertion port 23 may be called a "boot hole".
The adhesive filling portion 24 is a hollow portion for filling the adhesive. The adhesive filling section 24 is filled with an adhesive for retaining the optical fiber 1 in the ferrule body 11. By filling the adhesive filling portion 24 with an adhesive, the adhesive is applied between the adhesive filling portion 24, the inner wall surface of the optical fiber hole 22, and the optical fiber 1, and the adhesive is cured to fix the optical fiber 1 to the ferrule body 11. Thereby, the end of the optical fiber 1 is held by the ferrule body 11. There are cases where the fiber hole 22 and the adhesive filling portion 24 are collectively referred to as a fiber holding portion.
The body-side positioning portion 25 is a portion for performing vertical positioning between the optical fiber hole 22 of the ferrule body 11 and the lens portion 33 of the lens plate 12. The main body side positioning portion 25 has a main body side positioning portion 25A formed on the upper side of the front end surface 20 and a main body side positioning portion 25B formed on the lower side of the front end surface 20. Details of the main body side positioning portion 25 (the main body side positioning portion 25A and the main body side positioning portion 25B) will be described later.
The lens plate 12 is an optical member provided with a plurality of lenses. The lens plate 12 is formed of a transparent resin that transmits an optical signal. The lens plate 12 is disposed on the front side of the ferrule body 11 in a state where a plate-side positioning portion 40 described later is in contact with the body-side positioning portion 25 of the ferrule body 11. The lens plate 12 has two plate side guide holes 32 (a plate side guide hole 32A and a plate side guide hole 32B), a lens portion 33, an abutment surface 36, and a plate side positioning portion 40.
The two plate side guide holes 32 (the plate side guide hole 32A and the plate side guide hole 32B) are holes for inserting the guide pins 13 (not shown in fig. 1A to 2B, refer to fig. 4A and 4B described later). The board-side guide hole 32 is used for positioning the optical fiber hole 22 of the ferrule body 11 and the lens portion 33 of the lens plate 12. Therefore, the pitch (interval) of the two board-side guide holes 32 is the same as the pitch (interval) of the two body-side guide holes 21 of the ferrule body 10. In the following, the pitch (interval) between the two guide holes (the two body-side guide holes 21 or the two plate-side guide holes 32) will be described as the distance between the center axes of the two guide holes. That is, the distance between the central axes of the two body-side guide holes 21 of the ferrule body 10 is the same as the distance between the central axes of the two body-side guide holes 32. The plate-side guide hole 32 penetrates the lens plate 12 in the front-rear direction, and two plate-side guide holes 32 are opened in the front end surface 30 and the bottom portion 41 (described later) of the lens plate 12. The details of the two board-side guide holes 32 will be described later.
The lens portions 33 are arranged corresponding to the end faces of the plurality of optical fibers 1 inserted into the plurality of optical fiber holes 22, respectively, and input and output optical signals to and from the end faces of the optical fibers 1 through the lens portions 33. As described above, in the present embodiment, the rows of the optical fiber holes 22 aligned in the left-right direction are arranged. Further, a row of lens units 33 arranged in the left-right direction is also arranged for the lens units 33. That is, the rows of lens portions 33 arranged in the left-right direction are arranged on the lens plate 12 so as to correspond to the end faces of the optical fibers 1 inserted into the rows of the optical fiber holes 22, respectively. Therefore, the lens portion 33 is formed with high accuracy with respect to the board-side guide hole 32. The lens portion 33 is formed to function as a collimator lens, for example. Since the optical signal having an enlarged diameter by the lens portion 33 is transmitted as collimated light by being incident and emitted, the connection can be stably performed even if dust intrudes between the connectors, and the transmission loss of the optical signal can be suppressed. Further, by inputting and outputting the optical signal whose diameter is enlarged by the lens portion 33, the optical signal propagates as collimated light, and therefore, even if a displacement of the optical path of the optical signal occurs between the connectors, the transmission loss of the optical signal can be suppressed. The lens portion 33 is formed on the front end surface 30 side of the lens plate 12 and on the front end surface of the ferrule structure 10. When the ferrule structures 10 are brought into contact with each other while facing each other, the lens portions 33 are formed at the bottom of the recess (lens arrangement portion 34) formed in the lens plate 12 in order to prevent the convex lens portions 33 from coming into contact with each other. When one optical fiber hole 22 is formed in the ferrule body 11, one corresponding lens portion 33 is also arranged.
The contact surface 36 is a contact surface for contacting an end surface of the optical fiber 1. The abutment surface 36 is formed at a bottom portion 41 of a recess provided at the rear side of the lens plate 12. Therefore, when the lens plate 12 is attached to the ferrule body 11 via the guide pin 13 (described later), the contact surface 36 faces the opening of the optical fiber hole 22 of the ferrule body 11. The width of the bottom portion 41 in the left-right direction is larger than the width of the row of the optical fiber holes 22 arranged in the left-right direction (larger than the width of the optical fiber ribbon). By forming the bottom portion 41, a gap is formed between the opening surface of the optical fiber hole 22 of the ferrule body 11 and the contact surface 36 of the lens plate 12. That is, by forming the bottom portion 41 in the lens plate 12, a gap is formed between the lens plate 12 and the ferrule body 11, and this gap serves as a matching agent filling portion for filling an adhesive agent having a function as a refractive index matching agent. However, the refractive index matching agent may not be filled in the gap between the lens plate 12 and the ferrule body 11. In the present embodiment, the bottom portion 41 is formed from the upper surface to the lower surface of the lens plate 12. Therefore, the bottom portion 41 (matching agent filling portion) opens on the upper and lower surfaces of the ferrule structure 10.
The plate-side positioning portion 40 is a portion for performing vertical alignment between the optical fiber hole 22 of the ferrule body 11 and the lens portion 33 of the lens plate 12 together with the aforementioned body-side positioning portion 25. The plate-side positioning portion 40 includes a plate-side positioning portion 40A formed on the upper side of the abutment surface 36 and a plate-side positioning portion 40B formed on the lower side of the abutment surface 36. As shown in fig. 2A, the plate-side positioning portion 40A and the plate-side positioning portion 40B are not formed for the portion where the bottom portion 41 is provided, respectively. The details of the plate-side positioning portion 40 will be described later.
< comparative example >
Fig. 3A and 3B are explanatory views showing a state in which the ferrule body 11 and the lens plate 12 of the ferrule structure 100 of the comparative example are assembled via the guide pins 13. Fig. 3A and 3B show cross-sectional views taken along a plane perpendicular to the vertical direction at the position of the center axis of the guide pin 13.
In the ferrule structure 100 of the comparative example, the optical fiber holes 22 are formed with high accuracy with respect to the body-side guide holes 21, as in the ferrule structure 10 of the present embodiment described above. The lens portion 33 is also formed with high accuracy with respect to the board-side guide hole 32. However, in the ferrule structure 100 of the comparative example, the relationship between the body side guide hole 21 and the board side guide hole 32 is not designed with high accuracy. Therefore, in the comparative example, there are cases where: when the ferrule structure 10 is manufactured, the pitch of the two body side guide holes 21 is different from the pitch of the two board side guide holes 32. For example, as shown in fig. 3A, there is a case where the pitches of the two body side guide holes 21 (body side guide holes 21A and body side guide holes 21B) are each formed at P1, whereas the pitches of the two plate side guide holes 32 (plate side guide holes 32A and plate side guide holes 32B) are formed at P2 which is smaller than P1 (P2 < P1). Here, as shown in fig. 3A, the two guide pins 13 (guide pins 13A and 13B) are fitted into the two body side guide holes 21 (body side guide holes 21A and 21B). Therefore, the two guide pins 13 (guide pins 13A and 13B) are not fitted into the two plate side guide holes 32 (plate side guide holes 32A and 32B). When the two guide pins 13 in this state are inserted into the two plate side guide holes 32, the lens plate 12 is deformed by the guide pins 13 pressing the inner surfaces of the plate side guide holes 32. Thus, as shown in fig. 3B, the lens portion 33 is caused to move with respect to the initial position. Thus, there are cases where: this causes misalignment in the relationship between the optical fiber hole 22 and the lens portion 33, which causes a decrease in coupling efficiency due to the misalignment of the axes when connecting the optical connectors to each other. This problem similarly occurs when the pitch of the two body-side guide holes 21 is made larger than the pitch of the two plate-side guide holes 32 (P2 > P1).
< positioning between ferrule body 11 and lens plate 12 in the present embodiment >
Fig. 4A and 4B are cross-sectional explanatory views showing a state in which the guide pin 13 is inserted into the main body side guide hole 21 and the plate side guide hole 32 according to the present embodiment. Fig. 4A is a cross-sectional explanatory view of the ferrule structure 10 according to the present embodiment cut along a plane perpendicular to the vertical direction. Fig. 4B is a cross-sectional explanatory view of the ferrule structure 10 according to the present embodiment cut along a plane perpendicular to the left-right direction.
The foregoing comparative examples are the following: although the optical fiber hole 22 is formed with high accuracy with respect to the main body side guide hole 21 and the lens portion 33 is formed with high accuracy with respect to the board side guide hole 32, the relationship between the main body side guide hole 21 and the board side guide hole 32 is not designed with high accuracy, and therefore, the pitch between the two main body side guide holes 21 and the two board side guide holes 32 is different when the ferrule structure 10 is manufactured. Therefore, in the comparative example, the two body side guide holes 21 and the two plate side guide holes 32 do not have the same pitch, and thus the lens plate 12 is deformed when the two guide pins 13 are inserted, and the relationship between the optical fiber holes 22 of the ferrule body 11 and the lens portions 33 of the lens plate 12 is displaced.
Therefore, in the present embodiment, the inner diameter of the body side guide hole 21 (body side guide hole 21A) into which one guide pin 13 (guide pin 13A) of the two guide pins 13 is inserted and the inner diameter of the plate side guide hole 32 (plate side guide hole 32A) are formed so that the guide pin 13 fits. The inner diameter of the plate-side guide hole 32 (plate-side guide hole 32B) into which the other guide pin 13 (guide pin 13B) is inserted is formed larger than the inner diameter when the guide pin 13 is fitted. In other words, board-side guide hole 32B is formed larger than board-side guide hole 32A. Thus, even when the pitch of the board-side guide holes 32 (board-side guide holes 32B) into which the other guide pins 13 (guide pins 13B) are inserted does not coincide with the pitch of the body-side guide holes 21 (body-side guide holes 21B), it is possible to suppress the displacement between the optical fiber holes 22 of the ferrule body 11 and the lens portions 33 of the lens plate 12.
As shown in fig. 4A and 4B, in the present embodiment, the main body-side guide hole 21A and the board-side guide hole 32A are formed so that the guide pin 13A fits therein. The main body side guide hole 21B is also formed to fit the guide pin 13B. The plate-side guide hole 32B is formed larger than the inner diameter of the guide pin 13B when fitted. Therefore, even when the pitch of the board-side guide holes 32B is formed differently from that at the time of manufacturing the ferrule structure 10, it is possible to suppress the position of the board-side guide holes 32B from being different from the width of the guide pins 13B fitted into the body-side guide holes 21B. This can prevent the guide pin 13B from pressing the inner surface of the plate side guide hole 32B and deforming the lens plate 12 when the guide pin is inserted into the plate side guide hole 32B.
In the present embodiment, the main body side guide hole 21A and the plate side guide hole 32A are formed so that the guide pin 13A fits therein, the main body side guide hole 21B is formed so that the guide pin 13B fits therein, and the plate side guide hole 32B is formed so as to have a larger inner diameter than that of the guide pin 13B when it fits therein. Therefore, by merely inserting the two guide pins 13 (the guide pins 13A and 13B) inserted into the ferrule body 11 into the two board-side guide holes 32 (the board- side guide holes 32A and 32B) of the lens plate 12, the lens plate 12 can be rotated with respect to the ferrule body 11 about the center axis of the board-side guide hole 32A (the body-side guide hole 21A) into which the guide pin 13A is inserted. That is, only by inserting the two guide pins 13 (guide pin 13A and guide pin 13B) inserted into the ferrule body 11 into the respective board-side guide holes 32 (board-side guide hole 32A and board-side guide hole 32B) of the lens plate 12, the lens portion 33 of the lens plate 12 cannot be aligned in the rotational direction with respect to the optical fiber hole 22 of the ferrule body 11 centered on the center axis of the board-side guide hole 32A (body-side guide hole 21A).
Therefore, as shown in fig. 4B, in the present embodiment, the main body side positioning portion 25 is provided. The main body side positioning portions 25 are portions with which the later-described plate side positioning portions 40 come into contact. The main body side positioning portion 25 is provided on the front side of the ferrule main body 11. The main body-side positioning portion 25 is constituted by a main body-side positioning portion 25A which is an inclined surface (wedge surface) inclined toward the front side as it goes downward, and a main body-side positioning portion 25B which is an inclined surface (wedge surface) inclined toward the front side as it goes upward. By bringing the main body side positioning portion 25 into contact with the plate side positioning portion 40, the positions of the lens plate 12 in the front-rear direction and the up-down direction with respect to the ferrule body 11 can be made uniform. Thereby, the lens portion 33 of the lens plate 12 can also be aligned in the rotational direction with respect to the center axis of the plate side guide hole 32A (body side guide hole 21A) of the optical fiber hole 22 of the ferrule body 11.
On the other hand, in the present embodiment, the plate side positioning portion 40 is provided. The plate-side positioners 40 are portions that contact the aforementioned main body-side positioners 25. The plate-side positioning portion 40 is provided on the rear side of the lens plate 12. The plate-side positioning part 40 includes a plate-side positioning part 40A which is an inclined surface (tapered surface) inclined to the rear side as it goes upward, and a plate-side positioning part 40B which is an inclined surface (tapered surface) inclined to the rear side as it goes downward. By bringing the plate-side positioning portion 40 into contact with the main body-side positioning portion 25, the positions of the lens plate 12 in the front-rear direction and the up-down direction with respect to the ferrule body 11 can be made uniform. This also enables the lens portion 33 of the lens plate 12 to be rotationally aligned with respect to the optical fiber hole 22 of the ferrule body 11 about the center axis of the plate-side guide hole 32A (body-side guide hole 21A).
Further, as shown in fig. 4B, in the present embodiment, the plate side positioning portions 40 (the plate side positioning portions 40A and the plate side positioning portions 40B) are provided so as to sandwich the plate side guide hole 32B from the up-down direction. Therefore, the plate-side guide hole 32B can be positioned from both sides in the vertical direction by the plate-side positioning portions 40 (the plate-side positioning portions 40A and the plate-side positioning portions 40B), and the position of the plate-side guide hole 32B in the vertical direction with respect to the guide pin 13B can be positioned with high accuracy.
< method for manufacturing ferrule structure 10 with optical fiber >
Fig. 5 is a flowchart of a method (assembly step) for manufacturing the ferrule structure 10 with an optical fiber according to the present embodiment. Fig. 6A to 6D are explanatory views showing a state in which the optical fiber hole 22 of the ferrule body 11 and the lens portion 33 of the lens plate 12 of the present embodiment are aligned. Fig. 6A to 6D illustrate the states of S103 and S104 in fig. 5. Fig. 6B and 6D show cross-sectional views taken through a plane perpendicular to the left-right direction at the position of the center axis of the guide pin 13B.
First, the worker prepares the ferrule body 11 and the lens plate 12 (S101). The worker also prepares the guide pin 13 for the next process. Further, the worker also prepares a jig or the like for assembling the ferrule body 11 and the lens plate 12 as necessary.
Next, the operator inserts the guide pin 13 into the body-side guide hole 21 in order to align the optical fiber hole 22 of the ferrule body 11 with the lens portion 33 of the lens plate 12 via the guide pin (S102). At this time, the guide pin 13A is inserted into the main body side guide hole 21A, and the guide pin 13B is inserted into the main body side guide hole 21B. As described above, the main body side guide hole 21A is formed to fit the guide pin 13A. The main body side guide hole 21B is formed to fit the guide pin 13B. Therefore, when the guide pin 13A is inserted into the main body side guide hole 21A, the guide pin 13A is fitted into the main body side guide hole 21A. Further, when the guide pin 13B is inserted into the main body side guide hole 21B, the guide pin 13B is fitted into the main body side guide hole 21B.
The worker inserts the guide pin 13 into the board-side guide hole 32 in order to align the optical fiber hole 22 of the ferrule body 11 with the lens portion 33 of the lens plate 12 via the guide pin (S103). At this time, the guide pin 13A is inserted into the board side guide hole 32A, and the guide pin 13B is inserted into the board side guide hole 32B. As described above, the guide pin 13A is fitted into the plate side guide hole 32A. Therefore, the guide pin 13A is fitted into the board-side guide hole 32A by inserting the guide pin 13A into the board-side guide hole 32A.
As described above, the plate side guide hole 32B is formed larger than the inner diameter when the guide pin 13B is fitted. Therefore, as shown in fig. 6A and 6B, merely by inserting the guide pins 13A and 13B into the plate side guide holes 32A and 32B, respectively, the guide pins 13A are fitted into the plate side guide holes 32A, and the plate side guide holes 32B have a margin around the outer peripheries of the guide pins 13B. Therefore, the lens plate 12 can rotate with respect to the ferrule body 11 around the center axis of the plate-side guide hole 32A.
Therefore, the worker brings the body-side positioning portion 25 into contact with the plate-side positioning portion 40 by relatively bringing the ferrule body 11 and the lens plate 12 close to each other (S104). Thereby, as shown in fig. 6C and 6D, the positions of the lens plate 12 in the front-rear direction and the vertical direction with respect to the ferrule body 11 can be matched. Thus, the lens portion 33 of the lens plate 12 is positioned with respect to the optical fiber hole 22 of the ferrule body 11 while being restricted in the rotational direction about the center axis of the plate-side guide hole 32A (body-side guide hole 21A). Since the guide pin 13B is in a state of having a margin on the outer periphery thereof on the board-side guide hole 32B side, the positional relationship between the ferrule body 11 and the lens plate 12 in the vertical direction is determined by the contact between the body-side positioning portion 25 and the board-side positioning portion 40 within the margin.
Further, the ferrule structure 10 to which the ferrule body 11 and the lens plate 12 are attached via the guide pin 13 may be set in a jig, thereby maintaining the state in which the body-side positioning portions 25 are in contact with the plate-side positioning portions 40.
In S104, when the optical fiber hole 22 of the ferrule body 11 and the lens portion 33 of the lens plate 12 are aligned, the positional relationship between the ferrule body 11 and the lens plate 12 is as shown in fig. 6C and 6D. At this time, a gap is formed between the lens plate 12 and the ferrule body 11 by the bottom portion 41 of the lens plate 12. The contact surface 36 of the lens plate 12 faces the opening of the optical fiber hole 22 of the ferrule body 11.
Next, the operator inserts each optical fiber 1 of the optical fiber ribbon into each optical fiber hole 22 of the ferrule body 11 (S105). Before inserting the optical fibers 1, the worker cuts the end faces of the optical fibers 1 of the optical fiber ribbon. The end face of the optical fiber 1 may be cut by laser, mechanically cut by a knife, or polished. After cutting the end faces of the optical fibers 1, the worker inserts the respective optical fibers 1 of the optical fiber ribbon into the fiber holes 22 of the ferrule body 11. The optical fiber 1 is projected from the front end surface 20 (the opening surface of the fiber hole 22) of the ferrule body 11. At this stage, the end face of the optical fiber 1 does not abut on the abutment surface 36 of the lens plate 12. This is because when the optical fiber 1 is inserted through the fiber hole 22, dirt or the like may adhere to the end face of the optical fiber 1.
The end face (not shown) of the optical fiber 1 may be cleaned before S106 (contact processing) and S107 (fiber retaining processing) described later. For example, the operator blows air or the like to blow away dirt adhering to the end face of the optical fiber 1 protruding from the distal end face 20 of the ferrule body 11. This makes it possible to remove contaminants adhering to the end surface of the optical fiber 1 when the optical fiber 1 is inserted into the fiber hole 22 (S105).
Next, the operator further inserts the optical fiber 1 and brings the end face of the optical fiber 1 into contact with the contact surface 36 of the lens plate 12 (106). In the present embodiment, the operator inserts the protector into the optical fiber insertion port 23. However, the hood need not be inserted into the fiber insertion port 23.
In S104 (alignment by the body-side positioning portion 25 and the plate-side positioning portion 40), the lens portion 33 of the lens plate 12 is aligned in the front-rear direction with respect to the optical fiber hole 22 of the ferrule body 11. At this time, due to manufacturing errors of the main body side positioning portion 25 and the board side positioning portion 40, the lens plate 12 may be displaced in the front-rear direction with respect to the ferrule body 11. In S106 (abutment process), the optical fiber 1 is inserted until the end face of the optical fiber 1 abuts against the abutment surface 36 in the present embodiment. Therefore, even when the lens plate 12 is displaced in the front-rear direction with respect to the ferrule body 11, the distance from the end face of the optical fiber 1 to the lens face of the lens portion 33 does not change. Therefore, such a misalignment of the lens plate 12 in the front-rear direction with respect to the ferrule body 11 is allowed.
Next, the operator leaves the optical fiber 1 in the ferrule body 11 (S107). In the optical fiber retaining process of S106, first, the worker fills the adhesive filling section 24 of the ferrule body 11 with an adhesive. Thereby, the adhesive is applied between the inner wall surface of the adhesive filling portion 24 and the optical fiber 1. When the adhesive filling portion 24 is filled with the adhesive, the adhesive penetrates between the inner wall surface of the optical fiber hole 22 and the optical fiber 1. Then, the worker fills the adhesive as the refractive index matching agent from the upper opening of the bottom portion 41. When the adhesive serving as the refractive index matching agent is filled in the bottom portion 41 in S107, the adhesive penetrates into a minute gap in the contact surface between the ferrule body 11 and the lens plate 12. Thus, when the adhesive is cured, the ferrule body 11 and the lens plate 12 can be fixed to each other. Therefore, the work of bonding and fixing the ferrule body 11 and the lens plate 12 is easy. Finally, the worker cures the adhesive. When an ultraviolet curable resin is used as the binder, the worker irradiates ultraviolet rays. In addition, when an ultraviolet curable resin is used as the binder, the worker heats the resin.
The term "other" means
In the above-described embodiment, the body-side guide hole 21A and the plate-side guide hole 32A are formed so that the guide pin 13A fits therein, the body-side guide hole 21B is formed so that the guide pin 13B fits therein, and the plate-side guide hole 32B is formed so as to have a larger inner diameter than that of the guide pin 13B when it fits therein. However, the state of fitting guide pin 13A and the state of fitting guide pin 13B may be reversed. That is, the main body side guide hole 21B and the plate side guide hole 32B may be formed so that the guide pin 13B fits therein, the main body side guide hole 21A may be formed so that the guide pin 13A fits therein, and the plate side guide hole 32A may be formed so as to have a larger inner diameter than that of the guide pin 13A when it fits therein. Thus, even when the pitch of the board side guide holes 32 (board side guide holes 32B) into which the other guide pins 13 (guide pins 13A) are inserted does not match the pitch of the body side guide holes 21 (body side guide holes 21A), it is possible to suppress the misalignment between the optical fiber holes 22 of the ferrule body 11 and the lens portions 33 of the lens plate 12.
Further, the plate side guide hole 32B may be formed to fit the guide pin 13B, and the body side guide hole 21B may be formed to have a larger inner diameter than that of the body side guide hole 13B. Thus, even when the pitch of the body-side guide holes 21 (body-side guide holes 21A) into which the other guide pins 13 (guide pins 13A) are inserted does not match the pitch of the board-side guide holes 32 (board-side guide holes 32B), it is possible to suppress the misalignment between the optical fiber holes 22 of the ferrule body 11 and the lens portions 33 of the lens plate 12.
The foregoing embodiments are for the purpose of facilitating understanding of the present invention, and are not to be construed as limiting the present invention. The present invention can be modified and improved without departing from the gist thereof, and it is needless to say that the present invention includes equivalents thereof.
Description of the reference numerals
An optical fiber; an end face; 10. a ferrule construct; a ferrule body; a lens plate; a guide pin (No. 1 guide pin); a guide pin (No. 2 guide pin); a front end face; a main body side guide hole (1 st main body side guide hole); a main body side guide hole (2 nd main body side guide hole); an optical fiber bore; an optical fiber insertion port; an adhesive fill; 25A, 25b.. main body side positioning portion; a front end face; a plate side guide hole (1 st plate side guide hole); a plate side guide hole (2 nd plate side guide hole); a lens portion; a lens arrangement portion; an abutment surface; a board side positioning portion; bottom.
Claims (4)
1. A ferrule is characterized by being provided with:
a ferrule body having a 1 st body side guide hole for inserting a 1 st guide pin, a 2 nd body side guide hole for inserting a 2 nd guide pin, and an optical fiber holding portion for holding an optical fiber; and
a lens plate having a 1 st plate side guide hole for inserting the 1 st guide pin, a 2 nd plate side guide hole for inserting the 2 nd guide pin, a lens portion, and an abutment surface for abutting an end surface of the optical fiber,
the 1 st body side guide hole and the 1 st plate side guide hole are formed so that the 1 st guide pin is fitted therein,
either the 2 nd body side guide hole or the 2 nd plate side guide hole is formed to be fitted with the 2 nd guide pin, and the other of the 2 nd body side guide hole and the 2 nd plate side guide hole is formed to have an inner diameter larger than that at the time of fitting with the 2 nd guide pin,
the ferrule main body is provided with a main body side positioning part,
the lens plate is provided with a plate-side positioning portion,
the main body side positioning part and the board side positioning part are in contact with each other, whereby the lens plate is positioned with respect to the ferrule body in a direction perpendicular to a plane including a center axis of the 1 st board side guide hole and a center axis of the 2 nd board side guide hole.
2. The ferrule of claim 1,
the 2 nd main body side guide hole is formed to fit the 2 nd guide pin, and an inner diameter of the 2 nd plate side guide hole is formed larger than an inner diameter of the 2 nd main body side guide hole.
3. A ferrule with an optical fiber, comprising:
an optical fiber;
a ferrule body having a 1 st body side guide hole for inserting a 1 st guide pin, a 2 nd body side guide hole for inserting a 2 nd guide pin, and a fiber holding portion for holding the optical fiber; and
a lens plate having a 1 st guide hole for inserting the 1 st guide pin, a 2 nd guide hole for inserting the 2 nd guide pin, a lens portion, and an abutment surface for abutting against an end surface of the optical fiber,
the 1 st body side guide hole and the 1 st plate side guide hole are formed so that the 1 st guide pin is fitted therein,
either one of the 2 nd body side guide hole and the 2 nd plate side guide hole is formed to be fitted with the 2 nd guide pin, and the other of the 2 nd body side guide hole and the 2 nd plate side guide hole is formed to have an inside diameter larger than an inside diameter at the time of fitting with the 2 nd guide pin,
the ferrule main body is provided with a main body side positioning part,
the lens plate is provided with a plate-side positioning portion,
the main body side positioning part is in contact with the board side positioning part, whereby the lens plate is positioned with respect to the ferrule body in a direction perpendicular to a plane including a center axis of the 1 st board side guide hole and a center axis of the 2 nd board side guide hole.
4. A method of manufacturing an optical fiber-equipped ferrule, the optical fiber-equipped ferrule having:
an optical fiber;
a ferrule body having a 1 st body side guide hole for inserting a 1 st guide pin, a 2 nd body side guide hole for inserting a 2 nd guide pin, and a fiber holding portion for holding the optical fiber; and
a lens plate having a 1 st plate side guide hole for inserting the 1 st guide pin, a 2 nd plate side guide hole for inserting the 2 nd guide pin, a lens portion, and an abutment surface for abutting an end surface of the optical fiber,
the method for manufacturing the ferrule with the optical fiber is characterized in that,
the 1 st body side guide hole and the 1 st plate side guide hole are formed so that the 1 st guide pin is fitted therein,
either the 2 nd body side guide hole or the 2 nd plate side guide hole is formed to be fitted with the 2 nd guide pin, and the other of the 2 nd body side guide hole and the 2 nd plate side guide hole is formed to have an inner diameter larger than that at the time of fitting with the 2 nd guide pin,
the ferrule main body is provided with a main body side positioning part,
the lens plate is provided with a plate-side positioning portion,
inserting the 1 st guide pin and the 2 nd guide pin into the 1 st main body side guide hole and the 2 nd main body side guide hole, respectively,
inserting the 1 st guide pin and the 2 nd guide pin into the 1 st plate side guide hole and the 2 nd plate side guide hole, respectively,
the main body side positioning part is in contact with the board side positioning part, whereby the lens plate is positioned with respect to the ferrule body in a direction perpendicular to a plane including a center axis of the 1 st board side guide hole and a center axis of the 2 nd board side guide hole.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018234026 | 2018-12-14 | ||
| JP2018-234026 | 2018-12-14 | ||
| JP2019097647A JP7123857B2 (en) | 2018-12-14 | 2019-05-24 | Ferrule, ferrule with fiber, and method for manufacturing ferrule with fiber |
| JP2019-097647 | 2019-05-24 | ||
| PCT/JP2019/036293 WO2020121618A1 (en) | 2018-12-14 | 2019-09-17 | Ferrule, ferrule provided with fiber, and method for manufacturing ferrule provided with fiber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112955795A CN112955795A (en) | 2021-06-11 |
| CN112955795B true CN112955795B (en) | 2022-08-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201980071133.9A Active CN112955795B (en) | 2018-12-14 | 2019-09-17 | Ferrule, ferrule with optical fiber, and method for manufacturing ferrule with optical fiber |
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| Country | Link |
|---|---|
| JP (1) | JP7123857B2 (en) |
| CN (1) | CN112955795B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08278427A (en) * | 1995-04-05 | 1996-10-22 | Furukawa Electric Co Ltd:The | Optical connector |
| CN1191982A (en) * | 1996-12-27 | 1998-09-02 | 住友电气工业株式会社 | Method of molding optical connector ferrule |
| JP2003029092A (en) * | 2001-07-19 | 2003-01-29 | Furukawa Electric Co Ltd:The | Guide pin and optical connector connecting method using the same |
| CN104880784A (en) * | 2014-02-28 | 2015-09-02 | 住友电气工业株式会社 | Optical Connector Ferrule |
| JP2016009081A (en) * | 2014-06-24 | 2016-01-18 | 富士通コンポーネント株式会社 | Method for manufacturing optical connector and optical connector |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004252244A (en) * | 2003-02-21 | 2004-09-09 | Nippon Telegr & Teleph Corp <Ntt> | Optical fiber collimator array |
| US7150569B2 (en) * | 2003-02-24 | 2006-12-19 | Nor Spark Plug Co., Ltd. | Optical device mounted substrate assembly |
| US20110026882A1 (en) * | 2009-07-31 | 2011-02-03 | International Business Machines Corporation | Lensed optical connector with passive alignment features |
| WO2013019622A2 (en) * | 2011-07-29 | 2013-02-07 | Molex Incorporated | Multi-fiber ferrule with a lens plate |
| JP5314119B2 (en) * | 2011-12-26 | 2013-10-16 | 株式会社フジクラ | Optical module |
| JP2016095410A (en) * | 2014-11-14 | 2016-05-26 | 住友電気工業株式会社 | Grin lens array, connector with lens, and connector system with lens |
| US10228520B2 (en) * | 2016-08-30 | 2019-03-12 | Corning Optical Communications LLC | Fiber-to-waveguide optical interface devices and coupling devices with lenses for photonic systems |
| JP2018169581A (en) * | 2017-03-30 | 2018-11-01 | 古河電気工業株式会社 | Optical connector |
-
2019
- 2019-05-24 JP JP2019097647A patent/JP7123857B2/en active Active
- 2019-09-17 CN CN201980071133.9A patent/CN112955795B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08278427A (en) * | 1995-04-05 | 1996-10-22 | Furukawa Electric Co Ltd:The | Optical connector |
| CN1191982A (en) * | 1996-12-27 | 1998-09-02 | 住友电气工业株式会社 | Method of molding optical connector ferrule |
| JP2003029092A (en) * | 2001-07-19 | 2003-01-29 | Furukawa Electric Co Ltd:The | Guide pin and optical connector connecting method using the same |
| CN104880784A (en) * | 2014-02-28 | 2015-09-02 | 住友电气工业株式会社 | Optical Connector Ferrule |
| JP2016009081A (en) * | 2014-06-24 | 2016-01-18 | 富士通コンポーネント株式会社 | Method for manufacturing optical connector and optical connector |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112955795A (en) | 2021-06-11 |
| JP2020098319A (en) | 2020-06-25 |
| JP7123857B2 (en) | 2022-08-23 |
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