WO2017073408A1 - 光コネクタ及び光結合構造 - Google Patents
光コネクタ及び光結合構造 Download PDFInfo
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- WO2017073408A1 WO2017073408A1 PCT/JP2016/080863 JP2016080863W WO2017073408A1 WO 2017073408 A1 WO2017073408 A1 WO 2017073408A1 JP 2016080863 W JP2016080863 W JP 2016080863W WO 2017073408 A1 WO2017073408 A1 WO 2017073408A1
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- optical
- optical fiber
- ferrule
- face
- end surface
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/381—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres
- G02B6/3818—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres of a low-reflection-loss type
- G02B6/3822—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres of a low-reflection-loss type with beveled fibre ends
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/3873—Connectors using guide surfaces for aligning ferrule ends, e.g. tubes, sleeves, V-grooves, rods, pins, balls
- G02B6/3885—Multicore or multichannel optical connectors, i.e. one single ferrule containing more than one fibre, e.g. ribbon type
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/3833—Details of mounting fibres in ferrules; Assembly methods; Manufacture
- G02B6/3853—Lens inside the ferrule
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/3873—Connectors using guide surfaces for aligning ferrule ends, e.g. tubes, sleeves, V-grooves, rods, pins, balls
- G02B6/3882—Connectors using guide surfaces for aligning ferrule ends, e.g. tubes, sleeves, V-grooves, rods, pins, balls using rods, pins or balls to align a pair of ferrule ends
Definitions
- the present invention relates to an optical connector and an optical coupling structure.
- This application claims priority based on Japanese Patent Application No. 2015-210090 filed on Oct. 26, 2015, and incorporates all the content described in the above Japanese application.
- Patent Document 1 discloses a ferrule used for an optical connector that connects multi-core optical fibers.
- the ferrule includes a plurality of holes for holding a plurality of optical fiber cores, an inner surface for abutting and positioning the front ends of the plurality of optical fiber cores, and a front surface of the inner surface at the end surface. And a lens formed integrally with the recess.
- An optical connector has an optical fiber, a flat ferrule end face facing the counterpart optical connector, a ferrule that holds the optical fiber, and a ferrule end face provided on the ferrule end face. And a spacer for defining a distance from the counterpart optical connector, the tip surface of the optical fiber is exposed at the ferrule end surface, and each of the tip surface of the optical fiber and each of the ferrule end surfaces in the cross section along the optical axis of the optical fiber The normal direction is inclined with respect to the optical axis direction of the optical fiber, and the spacer has an opening through which an optical path extending from the front end surface of the optical fiber passes.
- An optical coupling structure includes first and second optical connectors that are connected to each other, and the first and second optical connectors have an optical fiber and a flat ferrule end face.
- a ferrule holding a fiber, and the ferrule end face of the first optical connector and the ferrule end face of the second optical connector are opposed to each other.
- light is transmitted at the ferrule end face.
- the front end surface of the fiber is exposed, and in the cross section along the optical axis of the optical fiber, each normal direction of the front end surface of the optical fiber and the end surface of the ferrule is inclined with respect to the optical axis direction of the optical fiber.
- a spacer that defines a distance between the ferrule end surface of the first optical connector and the ferrule end surface of the second optical connector, and the spacer includes an optical fiber of the first optical connector; Comprising an end face, an opening for passing the optical path extending between the front end surface of the optical fiber of the second optical connector.
- FIG. 1 is a side sectional view showing a configuration of an optical coupling structure according to an embodiment of the present invention.
- FIG. 2 is a cross-sectional view of the optical coupling structure taken along line II-II in FIG.
- FIG. 3 is an enlarged cross-sectional view showing the vicinity of the end face of the optical fiber.
- FIG. 4 is a front view showing the ferrule end face.
- FIG. 5 is an exploded perspective view of the spacer and the ferrule.
- FIG. 6 is a side sectional view showing a configuration of an optical coupling structure according to a modification.
- FIG. 7A is a side sectional view showing an example of the structure of a PC-type ferrule, and shows a state before connection.
- FIG. 7B is a side sectional view showing an example of the structure of a PC type ferrule, and shows a connected state.
- FIG. 8 is a side sectional view schematically showing an example of the structure of a ferrule in which a gap is provided between tip surfaces of optical fibers connected to each other and a lens is arranged in the gap portion.
- a PC (Physical Contact) system is generally known as a system for connecting connectors between optical fibers.
- 7A and 7B are side sectional views showing an example of the structure of a PC type ferrule.
- FIG. 7A shows a state before connection
- FIG. 7B shows a connection state.
- the ferrule 100 has a cylindrical appearance, and has a hole 102 for holding the optical fiber core wire 120 on the central axis.
- the optical fiber core wire 120 is inserted into the hole 102, and the distal end portion of the distal end surface 104 of the ferrule 100 slightly protrudes to the outside.
- the optical fiber cores 120 are efficiently optically connected to each other by pressing the distal ends of the optical fiber cores 120 in physical contact with the distal ends of the connection counterpart connectors (FIG. 7B). Combine.
- Such a system is mainly used when connecting single-core optical fibers.
- this method has the following problems. That is, if a connection is made with foreign matter attached to the ferrule end face, the foreign matter will adhere to the ferrule end face by the pressing force. In order to remove the adhered foreign matter, it is necessary to use a contact-type cleaner, and in order to prevent the foreign matter from sticking, it is necessary to frequently perform cleaning. In addition, when a plurality of optical fibers are connected at the same time, a predetermined pressing force is required for each optical fiber, so that a larger force is required for connection as the number of optical fibers increases.
- FIG. 8 is a side sectional view schematically showing an example of the structure of such a ferrule.
- the ferrule 200 includes a plurality of holes 202 for holding a plurality of optical fiber cores 120, an inner surface 204 that abuts the front end portions of the plurality of optical fiber core wires and positions the front end portions, and an end surface 205 includes a lens 208 provided in front of the inner surface 204.
- the position of the lens 208 in addition to the optical fiber core wire 120 needs to be accurately aligned. Accordingly, the number of parts requiring alignment work increases, and the positional error (tolerance) allowed for each part becomes severe, so that the alignment process becomes complicated and takes a long time.
- An object of the present invention is to provide an optical connector and an optical coupling structure that can be easily aligned.
- an optical connector and an optical coupling structure that can easily clean the ferrule end face, do not require a large force for connection even when a plurality of optical fibers are connected simultaneously, and are easily aligned. Can provide.
- An optical connector according to an embodiment of the present invention has an optical fiber, a flat ferrule end face facing the counterpart optical connector, a ferrule that holds the optical fiber, and a ferrule end face provided on the ferrule end face.
- a spacer for defining a distance from the counterpart optical connector, the tip surface of the optical fiber is exposed at the ferrule end surface, and each of the tip surface of the optical fiber and each of the ferrule end surfaces in the cross section along the optical axis of the optical fiber
- the normal direction is inclined with respect to the optical axis direction of the optical fiber, and the spacer has an opening through which an optical path extending from the front end surface of the optical fiber passes.
- An optical coupling structure includes first and second optical connectors that are connected to each other, and the first and second optical connectors have an optical fiber and a flat ferrule end face.
- a ferrule holding a fiber, and the ferrule end face of the first optical connector and the ferrule end face of the second optical connector are opposed to each other.
- light is transmitted at the ferrule end face.
- the front end surface of the fiber is exposed, and in the cross section along the optical axis of the optical fiber, each normal direction of the front end surface of the optical fiber and the end surface of the ferrule is inclined with respect to the optical axis direction of the optical fiber.
- a spacer that defines a distance between the ferrule end surface of the first optical connector and the ferrule end surface of the second optical connector, and the spacer includes an optical fiber of the first optical connector; Having an end face, an opening for passing the optical path extending between the front end surface of the optical fiber of the second optical connector.
- a spacer that defines the distance from the counterpart optical connector is provided on the ferrule end face.
- a spacer is provided that defines the distance between the ferrule end face of the first optical connector and the ferrule end face of the second optical connector.
- the normal directions of the front end face and the ferrule end face of the optical fiber are inclined with respect to the optical axis direction of the optical fiber. Thereby, the reflected return light in the front end surface of an optical fiber can be reduced.
- the inclined ferrule end face and the end face of the optical fiber can be easily formed by polishing or the like.
- a pair of guide holes formed side by side in the direction intersecting the cross section and into which the guide pins are respectively inserted are formed in the ferrule end face, and the center of the pair of guide holes is connected to the ferrule end face.
- the center position of the tip surface of the optical fiber may be displaced from the straight line.
- the optical path extending from the tip surface of the optical fiber is refracted at the tip surface. Tilt relative to the optical axis.
- the center position of the tip surface of the optical fiber is shifted with respect to the straight line connecting the centers of the pair of guide holes, so that the counterpart optical connector having the same configuration as the optical fiber is provided.
- the optical fiber can be suitably optically coupled.
- a pair of guide holes formed side by side in the direction crossing the cross section and into which the guide pins are inserted are formed in the ferrule end face, and the spacer has a pair of through holes through which the guide pins pass. Furthermore, you may have. Thereby, a spacer can be stably hold
- the optical axis of the optical fiber may be inclined with respect to the connection direction, and an optical path extending from the tip surface of the optical fiber may extend along the connection direction.
- the thickness of the spacer in the connecting direction may be 20 ⁇ m or more and 100 ⁇ m or less. Since the spacers are thin in this way, they can reach the optical fiber tip surface of the mating optical connector before the diameter of the light emitted from the optical fiber tip surface expands, thus suppressing a decrease in optical coupling efficiency. it can.
- the end face of the connector is an inclined surface of 8 ° in order to reduce the reflected return light. However, if it is closer than 20 ⁇ m, multiple reflections may occur due to the influence of the reflected return light and the optical characteristics may be deteriorated. is there. Therefore, by making the end face angle larger than 8 °, multiple reflection can be suppressed even if the spacer thickness is in the range of 10 ⁇ m to 20 ⁇ m, and the optical connection loss can be further reduced. .
- FIG. 1 is a side sectional view showing a configuration of an optical coupling structure 1A according to an embodiment of the present invention, and shows a cross section along an optical axis of an optical fiber 10.
- FIG. FIG. 2 is a cross-sectional view of the optical coupling structure 1A along the line II-II in FIG.
- the optical coupling structure 1 ⁇ / b> A of the present embodiment includes a first optical connector 2 ⁇ / b> A and a second optical connector 2 ⁇ / b> B that are connected to each other.
- the optical connectors 2A and 2B include a plurality of optical fibers 10 (eight examples are illustrated in FIG. 2) and a ferrule 11 that holds the plurality of optical fibers 10 together.
- the plurality of optical fibers 10 extend along the connection direction (arrow A1 in FIGS. 1 and 2), and are arranged side by side in the direction A2 that intersects the connection direction A1.
- Each optical fiber 10 has an optical fiber core wire 10a and a resin coating 10b covering the optical fiber core wire 10a, and the optical fiber 10b is removed by removing the resin coating 10b from the middle in the connecting direction to the distal end surface 10c.
- the core wire 10a is exposed.
- the number of the optical fibers 10 is not limited to 8, and may be 12 or 24, for example.
- the ferrule 11 has a substantially rectangular parallelepiped appearance and is made of, for example, resin.
- the ferrule 11 has a flat ferrule end surface 11a provided on one end side in the connection direction A1, and a rear end surface 11b provided on the other end side.
- the ferrule 11 has a pair of side surfaces 11c and 11d extending along the connection direction A1, a bottom surface 11e, and an upper surface 11f.
- the ferrule end surface 11a of the optical connector 2A and the ferrule end surface 11a of the optical connector 2B are opposed to each other.
- a pair of guide holes 11g and 11h are formed in the ferrule end face 11a so as to be aligned in a direction (direction A2 in the present embodiment) intersecting the cross section along the optical axis of the optical fiber 10.
- a pair of guide pins 21a and 21b are inserted into the guide holes 11g and 11h, respectively. The pair of guide pins 21a and 21b fix the relative positions of the optical connector 2A and the optical connector 2B.
- an introduction hole 12 for receiving a plurality of optical fibers 10 together is formed.
- a plurality of optical fiber holding holes 13 are formed so as to penetrate from the introduction hole 12 to the ferrule end surface 11a, and a plurality of optical fiber cores 10a are inserted into the optical fiber holding holes 13, respectively. Retained.
- the distal end surface 10c of each optical fiber core wire 10a is exposed at the ferrule end surface 11a, and is preferably flush with the ferrule end surface 11a.
- These front end surfaces 10c are optically coupled to the front end surfaces 10c of the optical fiber core wires 10a of the mating connector directly without using an optical element such as a lens and a refractive index matching agent (through only air). . Therefore, the light emitted from the front end surface 10c of one optical connector is incident on the front end surface 10c of the other optical connector while having a slight spread.
- FIG. 3 is an enlarged cross-sectional view showing the vicinity of the distal end face 10c of the optical fiber 10.
- the normal direction V1 of the tip surface 10 c and the ferrule end surface 11 a of the optical fiber 10 is inclined with respect to the optical axis direction V2 of the optical fiber 10. is doing. Thereby, the reflected return light in the front end surface 10c is reduced.
- the optical path L1 of the light emitted from the distal end surface 10c of the optical fiber 10 is refracted in the direction opposite to the inclination direction of the distal end surface 10c at the distal end surface 10c.
- FIG. 4 is a front view showing the ferrule end face 11a.
- the center position C1 of the tip face 10c of the optical fiber 10 is slightly shifted upward with respect to a straight line E1 connecting the centers of the pair of guide holes 11g and 11h.
- the central axis of the optical fiber 10 is slightly shifted toward the upper surface 11f side with respect to the center of the ferrule 11. Accordingly, even if the optical path L1 is refracted, the optical connectors 2A and 2B are connected to each other so that the optical axes of the respective optical fibers 10 are shifted in the vertical direction. Can be optically coupled.
- the optical connector 2A further includes a spacer 14.
- FIG. 5 is an exploded perspective view of the spacer 14 and the ferrule 11.
- the spacer 14 is provided on the ferrule end surface 11a, and defines the distance between the ferrule end surface 11a and the ferrule end surface 11a of the optical connector 2B.
- the spacer 14 has a plate shape having an opening 14a, one surface 14b is in contact with and adhered to the ferrule end surface 11a of the optical connector 2A, and the other surface 14c is connected to the optical connector 2B. At the time of connection, it abuts on the ferrule end surface 11a of the optical connector 2B.
- the bonding may be not only bonding using an adhesive but also mechanical bonding, chemical bonding, dispersion bonding, electrostatic bonding, or welding.
- the openings 14a allow a plurality of optical paths L1 extending between the tip surfaces 10c of the plurality of optical fibers 10 of the optical connector 2A and the tip surfaces 10c of the plurality of optical fibers 10 of the optical connector 2B to pass through.
- the thickness T (see FIG. 1) of the spacer 14 in the connection direction A1 is, for example, not less than 20 ⁇ m and not more than 100 ⁇ m. However, the thickness T of the spacer 14 may be reduced to 10 ⁇ m by increasing the inclination angle of the ferrule end face 11a to be greater than 8 °.
- the thickness T of the spacer 14 may be, for example, 10 ⁇ m or more and 100 ⁇ m or less.
- the material of the spacer 14 is preferably the same as the material of the ferrule 11, and for example, polyphenylene sulfide (PPS) containing glass filler is preferable, but the ferrule 11 and the spacer 14 may be made of different materials. .
- the spacer 14 further has a pair of through holes 14d and 14e through which the guide pins 21a and 21b pass, respectively. Accordingly, the spacer 14 is stably held by the guide pins 21a and 21b in a state where the optical connectors 2A and 2B are connected to each other.
- the spacer 14 that defines the distance from the counterpart optical connector is provided on the ferrule end surface 11a.
- a spacer 14 that defines a distance between the ferrule end surface 11a of the optical connector 2A and the ferrule end surface 11a of the optical connector 2B is provided.
- a non-contact optical connection structure can be realized, the adhesion of foreign matters can be reduced, and the ferrule end surface 11a can be easily cleaned (for example, an air duster) or can be eliminated.
- a large number of optical fibers 10 can be connected simultaneously without requiring a large force for connection.
- no lens is interposed, the number of optical members existing in the optical path can be reduced. Thereby, while being able to suppress an optical connection loss, an alignment process is facilitated, a manufacturing process can be reduced, and cost can be suppressed low.
- the normal directions of the tip surface 10c and the ferrule end surface 11a of the optical fiber 10 are inclined with respect to the optical axis direction of the optical fiber 10 (see FIG. 3). Thereby, the reflected return light in the front end surface 10c of the optical fiber 10 can be reduced. Further, since the spacer 14 and the ferrule 11 are separate members, the inclined ferrule end surface 11a and the front end surface 10c of the optical fiber 10 can be easily formed by polishing or the like.
- the center position C1 of the distal end surface 10c of the optical fiber 10 may be deviated from the straight line E1 connecting the centers of the pair of guide holes 11g and 11h on the ferrule end surface 11a.
- the normal line direction of the tip surface 10c of the optical fiber 10 is inclined with respect to the optical axis direction of the optical fiber 10
- the refraction at the tip surface 10c extends from the tip surface 10c of the optical fiber 10.
- the optical path L1 is inclined with respect to the optical axis of the optical fiber 10.
- the light having the same configuration can be obtained by shifting the center position C1 of the distal end surface 10c of the optical fiber 10 with respect to the straight line E1 connecting the centers of the pair of guide holes 11g and 11h.
- the optical fibers 10 of the connectors 2A and 2B can be suitably optically coupled.
- the thickness of the spacer 14 in the connection direction A1 may be 20 ⁇ m or more and 100 ⁇ m or less. Furthermore, the thickness of the spacer 14 in the connection direction A1 may be reduced to 10 ⁇ m by increasing the inclination angle of the ferrule end face 11a to more than 8 °. Since the spacer 14 is thin like this, the diameter of the light emitted from the distal end surface 10c of the optical fiber 10 does not expand, and the distal end surface 10c of the optical fiber 10 of the counterpart optical connector (optical connector 2B) is reached. Therefore, a decrease in optical coupling efficiency can be suppressed.
- FIG. 6 is a side sectional view showing a configuration of an optical coupling structure 1B according to a modification of the above embodiment, and shows a cross section along the optical axis of the optical fiber 10.
- the optical coupling structure 1B of the present embodiment includes a first optical connector 2C and a second optical connector 2D that are connected to each other.
- the difference between the optical connectors 2C and 2D of the present modification and the optical connectors 2A and 2B of the above embodiment is the angle of the optical fiber core wire 10a with respect to the connection direction A1 in the optical axis direction. That is, in this modification, the optical axis of the optical fiber core wire 10a is inclined with respect to the connection direction A1 in the cross section along the optical axis of the optical fiber core wire 10a. In other words, the optical axis of the optical fiber core wire 10a is inclined with respect to the extending direction of the guide holes 11g and 11h (see FIG. 2). Therefore, the optical path L1 extending from the distal end face 10c of the optical fiber 10 extends along (in parallel with) the connection direction A1.
- the configuration as in this modification example is also possible.
- the optical coupling of the optical connectors 2C and 2D can be suitably realized. That is, by appropriately selecting the angle of the ferrule end face 11a and the angle of the optical axis of the optical fiber 10 (the angle of the optical fiber holding hole 13), the extending direction of the optical path L1 can be arbitrarily set with respect to the connection direction A1. It becomes possible to set.
- permissible_range of the relative position accuracy (tolerance) of the optical connectors 2C and 2D in the connection direction A1 can be expanded.
- optical connector and the optical coupling structure according to the present invention are not limited to the above-described embodiments, and various other modifications are possible.
- the above-described embodiments may be combined with each other according to the necessary purpose and effect.
- the clearance gap between ferrule end surfaces is satisfy
- the present invention is applied to the multi-core optical connector in the above-described embodiment, it can also be applied to a single-core optical connector.
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Abstract
Description
本出願は、2015年10月26日出願の日本出願第2015-210090号に基づく優先権を主張し、前記日本出願に記載された全ての記載内容を援用するものである。
光ファイバ同士のコネクタ接続の方式として、一般的にPC(Physical Contact)方式が知られている。図7A及び図7Bは、PC方式のフェルールの構造の一例を示す側断面図である。図7Aは接続前の状態を示し、図7Bは接続している状態を示す。このフェルール100は、円柱状の外観を有しており、光ファイバ心線120を保持するための孔102を中心軸線上に有する。光ファイバ心線120は、孔102に挿通され、フェルール100の先端面104において先端部が外部に僅かに突出する。このPC方式では、光ファイバ心線120の先端部を、接続相手側コネクタの同先端部と物理的に接触させて押圧することにより(図7B)、光ファイバ心線120同士を効率的に光結合させる。このような方式は、主に単心光ファイバ同士を接続する際に用いられる。
本開示によれば、フェルール端面の清掃が容易であり、複数本の光ファイバを同時に接続する場合であっても接続に大きな力を必要とせず、調芯作業が容易な光コネクタ及び光結合構造を提供できる。
最初に、本発明の実施形態の内容を列記して説明する。本発明の一実施形態に係る光コネクタは、光ファイバと、相手側光コネクタと対向する平坦なフェルール端面を有し、光ファイバを保持するフェルールと、フェルール端面上に設けられて該フェルール端面と相手側光コネクタとの間隔を規定するスペーサとを備え、フェルール端面において光ファイバの先端面が露出しており、光ファイバの光軸に沿った断面において、光ファイバの先端面及びフェルール端面の各法線方向が光ファイバの光軸方向に対して傾斜しており、スペーサは、光ファイバの先端面から延びる光路を通過させる開口を有する。
本発明の実施形態に係る光コネクタ及び光結合構造の具体例を、以下に図面を参照しつつ説明する。なお、本発明はこれらの例示に限定されるものではなく、特許請求の範囲によって示され、特許請求の範囲と均等の意味及び範囲内でのすべての変更が含まれることが意図される。以下の説明では、図面の説明において同一の要素には同一の符号を付し、重複する説明を省略する。
図6は、上記実施形態の一変形例に係る光結合構造1Bの構成を示す側断面図であって、光ファイバ10の光軸に沿った断面を示している。図6に示されるように、本実施形態の光結合構造1Bは、互いに接続される第1の光コネクタ2C及び第2の光コネクタ2Dを備えている。
Claims (10)
- 光ファイバと、
相手側光コネクタと対向する平坦なフェルール端面を有し、前記光ファイバを保持するフェルールと、
前記フェルール端面上に設けられて該フェルール端面と前記相手側光コネクタとの間隔を規定するスペーサと、を備え、
前記フェルール端面において前記光ファイバの先端面が露出しており、
前記光ファイバの光軸に沿った断面において、前記光ファイバの前記先端面及び前記フェルール端面の各法線方向が前記光ファイバの光軸方向に対して傾斜しており、
前記スペーサは、前記光ファイバの前記先端面から延びる光路を通過させる開口を有する、光コネクタ。 - 前記断面と交差する方向に並んで形成されてガイドピンがそれぞれ挿入される一対のガイド孔が前記フェルール端面に形成されており、
前記フェルール端面において、前記一対のガイド孔の中心を結ぶ直線に対して前記光ファイバの前記先端面の中心位置がずれている、請求項1に記載の光コネクタ。 - 前記断面と交差する方向に並んで形成されてガイドピンがそれぞれ挿入される一対のガイド孔が前記フェルール端面に形成されており、
前記スペーサは、前記ガイドピンが通る一対の貫通孔を更に有する、請求項1に記載の光コネクタ。 - 前記断面において、前記光ファイバの光軸は接続方向に対して傾斜しており、
前記光ファイバの前記先端面から延びる光路が前記接続方向に沿って延びる、請求項1~3のいずれか一項に記載の光コネクタ。 - 接続方向における前記スペーサの厚さが10μm以上100μm以下である、請求項1~4のいずれか一項に記載の光コネクタ。
- 前記光ファイバの先端面は、前記フェルール端面と面一である、請求項1~5の何れか一項に記載の光コネクタ。
- 前記スペーサは、前記フェルール端面に接着されている、請求項1~6の何れか一項に記載の光コネクタ。
- 前記スペーサは、前記フェルールと同じ材料から構成されている、請求項1~7の何れか一項に記載の光コネクタ。
- 互いに接続される第1及び第2の光コネクタを備え、
前記第1及び第2の光コネクタは、光ファイバと、平坦なフェルール端面を有し前記光ファイバを保持するフェルールとをそれぞれ備え、
前記第1の光コネクタの前記フェルール端面と、前記第2の光コネクタの前記フェルール端面とが互いに対向し、
前記第1及び第2の光コネクタのそれぞれにおいて、前記フェルール端面において前記光ファイバの先端面が露出しており、前記光ファイバの光軸に沿った断面において、前記光ファイバの前記先端面及び前記フェルール端面の各法線方向が前記光ファイバの光軸方向に対して傾斜しており、
前記第1の光コネクタの前記フェルール端面と前記第2の光コネクタの前記フェルール端面との間隔を規定するスペーサを更に備え、
前記スペーサは、前記第1の光コネクタの前記光ファイバの前記先端面と、前記第2の光コネクタの前記光ファイバの前記先端面との間に延びる光路を通過させる開口を有する、光結合構造。 - 前記第1の光コネクタの前記光ファイバの先端面は、前記スペーサの開口内において空気のみを介して前記第2の光コネクタの前記光ファイバの先端面に光結合される、請求項9に記載の光結合構造。
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CN201680062496.2A CN108351478B (zh) | 2015-10-26 | 2016-10-18 | 光连接器及光耦合构造 |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019064773A1 (ja) * | 2017-09-26 | 2019-04-04 | 住友電気工業株式会社 | スペーサ、光コネクタ及び光接続構造 |
WO2019095690A1 (zh) * | 2017-11-20 | 2019-05-23 | 深圳太辰光通信股份有限公司 | 一种光纤连接器 |
JP2021026103A (ja) * | 2019-08-02 | 2021-02-22 | 住友電気工業株式会社 | 光コネクタ |
US11782222B2 (en) | 2019-04-14 | 2023-10-10 | Sumitomo Electric Industries, Ltd. | Optical fiber connection component and optical fiber connection structure |
US11927812B2 (en) | 2019-02-25 | 2024-03-12 | Sumitomo Electric Industries, Ltd. | Ferrule and optical connector |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10113837B2 (en) | 2015-11-03 | 2018-10-30 | N2 Imaging Systems, LLC | Non-contact optical connections for firearm accessories |
JP6597439B2 (ja) * | 2016-03-24 | 2019-10-30 | 住友電気工業株式会社 | 光コネクタフェルール、光コネクタ及び光結合構造 |
CN111045157A (zh) * | 2018-10-15 | 2020-04-21 | 康普技术有限责任公司 | 带套圈的光纤连接器以及用于将光纤定位在套圈中的方法 |
US10649150B1 (en) * | 2018-12-14 | 2020-05-12 | Afl Telecommunications Llc | Fiber optic connectors and interfaces |
US11143838B2 (en) | 2019-01-08 | 2021-10-12 | N2 Imaging Systems, LLC | Optical element retainers |
WO2022125443A1 (en) * | 2020-12-08 | 2022-06-16 | Ofs Fitel, Llc | Methods and apparatus for aligning and splicing optical fibers |
US20230236356A1 (en) * | 2022-01-25 | 2023-07-27 | Corning Research & Development Corporation | Single-mode optical fiber with dyed thin coating |
Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6268107U (ja) * | 1985-10-18 | 1987-04-28 | ||
JPH03120504A (ja) * | 1989-09-27 | 1991-05-22 | Hewlett Packard Co <Hp> | 光ファイバコネクタ |
US6104856A (en) * | 1998-06-16 | 2000-08-15 | Lucent Technologies Inc. | Optical air-gap attenuator |
JP2000231030A (ja) * | 1999-02-12 | 2000-08-22 | Sumitomo Electric Ind Ltd | 光ファイバアレイおよび光導波路 |
JP2003121679A (ja) * | 2001-10-11 | 2003-04-23 | Seiko Instruments Inc | 端面を斜め形状に成形した光ファイバを用いる光ファイバデバイス |
JP2003307647A (ja) * | 2002-04-15 | 2003-10-31 | Kyocera Corp | 光ファイバ用フェルールとその加工方法及びこれを用いた光モジュール用ピグテイル |
JP2004145140A (ja) * | 2002-10-25 | 2004-05-20 | Furukawa Electric Co Ltd:The | 光コネクタ及び光コネクタの接続構造 |
JP2007065490A (ja) * | 2005-09-01 | 2007-03-15 | Sumitomo Electric Ind Ltd | 光ファイバの接続端末およびその接続方法 |
JP2012163922A (ja) * | 2011-02-09 | 2012-08-30 | Hitachi Cable Ltd | 光スイッチ |
JP2014182379A (ja) * | 2013-03-15 | 2014-09-29 | General Electric Co <Ge> | 光学サブアセンブリとその製造方法 |
JP2016184106A (ja) * | 2015-03-26 | 2016-10-20 | 株式会社フジクラ | 光ファイバ付きフェルール、光コネクタシステム及び光ファイバ付きフェルールの製造方法 |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01229208A (ja) * | 1988-03-08 | 1989-09-12 | Oki Electric Ind Co Ltd | 光モジュール |
JP2633073B2 (ja) * | 1990-09-07 | 1997-07-23 | 株式会社精工技研 | 可変型光減衰器 |
JP3120504B2 (ja) | 1991-11-20 | 2000-12-25 | 松下電器産業株式会社 | 磁気ヘッド用スライダー |
US5319733A (en) * | 1992-01-02 | 1994-06-07 | Adc Telecommunications, Inc. | Variable fiber optical attenuator |
JPH07218777A (ja) * | 1994-01-26 | 1995-08-18 | Alps Electric Co Ltd | 光通信用モジュール |
JPH08304668A (ja) * | 1995-05-12 | 1996-11-22 | Oyo Koden Kenkiyuushitsu:Kk | 光学素子を固定するためのレーザ溶接方法 |
JPH09145957A (ja) * | 1995-11-20 | 1997-06-06 | Fujitsu Ltd | 光コネクタ |
JPH09222536A (ja) * | 1995-12-13 | 1997-08-26 | Furukawa Electric Co Ltd:The | 多心光コネクタ |
US6012852A (en) * | 1996-12-18 | 2000-01-11 | The Whitaker Corporation | Expanded beam fiber optic connector |
US6782162B2 (en) * | 2001-08-06 | 2004-08-24 | Nippon Sheet Glass Co., Ltd. | Optical module and method for assembling the same |
JP2006084498A (ja) * | 2004-09-14 | 2006-03-30 | Fujikura Ltd | 光減衰器 |
US9057841B2 (en) * | 2008-01-03 | 2015-06-16 | Oplink Communications, Inc. | Wavelength division multiplexing |
JP2011033849A (ja) * | 2009-08-03 | 2011-02-17 | Yazaki Corp | 中継光コネクタ |
US9563027B2 (en) | 2010-10-19 | 2017-02-07 | Us Conec, Ltd. | Unitary multi-fiber optical ferrule with integrated lenses |
TWM450737U (zh) * | 2011-06-14 | 2013-04-11 | Molex Inc | 光纖組件 |
US20130064509A1 (en) * | 2011-09-09 | 2013-03-14 | Mobius Photonics, Inc. | Optical fiber connector |
US20130163930A1 (en) * | 2011-12-22 | 2013-06-27 | Arrayed Fiberoptics Corporation | Non-contact optical fiber connector component |
US9366830B2 (en) * | 2013-02-28 | 2016-06-14 | Lifodas, Uab | Hybrid ferrule and fiber optical test device |
US10162127B2 (en) * | 2013-10-15 | 2018-12-25 | Commscope, Inc. Of North Carolina | Expanded beam array for fiber optics |
US9739949B2 (en) * | 2015-03-26 | 2017-08-22 | Fujikura Ltd. | Ferrule with optical fiber and optical connector system |
-
2016
- 2016-10-18 US US15/770,265 patent/US10444439B2/en active Active
- 2016-10-18 CN CN201680062496.2A patent/CN108351478B/zh active Active
- 2016-10-18 JP JP2017547744A patent/JP7033921B2/ja active Active
- 2016-10-18 WO PCT/JP2016/080863 patent/WO2017073408A1/ja active Application Filing
- 2016-10-18 SE SE1850210A patent/SE542973C2/en unknown
-
2021
- 2021-04-20 JP JP2021071329A patent/JP2021107942A/ja active Pending
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6268107U (ja) * | 1985-10-18 | 1987-04-28 | ||
JPH03120504A (ja) * | 1989-09-27 | 1991-05-22 | Hewlett Packard Co <Hp> | 光ファイバコネクタ |
US6104856A (en) * | 1998-06-16 | 2000-08-15 | Lucent Technologies Inc. | Optical air-gap attenuator |
JP2000231030A (ja) * | 1999-02-12 | 2000-08-22 | Sumitomo Electric Ind Ltd | 光ファイバアレイおよび光導波路 |
JP2003121679A (ja) * | 2001-10-11 | 2003-04-23 | Seiko Instruments Inc | 端面を斜め形状に成形した光ファイバを用いる光ファイバデバイス |
JP2003307647A (ja) * | 2002-04-15 | 2003-10-31 | Kyocera Corp | 光ファイバ用フェルールとその加工方法及びこれを用いた光モジュール用ピグテイル |
JP2004145140A (ja) * | 2002-10-25 | 2004-05-20 | Furukawa Electric Co Ltd:The | 光コネクタ及び光コネクタの接続構造 |
JP2007065490A (ja) * | 2005-09-01 | 2007-03-15 | Sumitomo Electric Ind Ltd | 光ファイバの接続端末およびその接続方法 |
JP2012163922A (ja) * | 2011-02-09 | 2012-08-30 | Hitachi Cable Ltd | 光スイッチ |
JP2014182379A (ja) * | 2013-03-15 | 2014-09-29 | General Electric Co <Ge> | 光学サブアセンブリとその製造方法 |
JP2016184106A (ja) * | 2015-03-26 | 2016-10-20 | 株式会社フジクラ | 光ファイバ付きフェルール、光コネクタシステム及び光ファイバ付きフェルールの製造方法 |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019064773A1 (ja) * | 2017-09-26 | 2019-04-04 | 住友電気工業株式会社 | スペーサ、光コネクタ及び光接続構造 |
WO2019095690A1 (zh) * | 2017-11-20 | 2019-05-23 | 深圳太辰光通信股份有限公司 | 一种光纤连接器 |
US11927812B2 (en) | 2019-02-25 | 2024-03-12 | Sumitomo Electric Industries, Ltd. | Ferrule and optical connector |
US11782222B2 (en) | 2019-04-14 | 2023-10-10 | Sumitomo Electric Industries, Ltd. | Optical fiber connection component and optical fiber connection structure |
JP2021026103A (ja) * | 2019-08-02 | 2021-02-22 | 住友電気工業株式会社 | 光コネクタ |
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US10444439B2 (en) | 2019-10-15 |
SE542973C2 (en) | 2020-09-22 |
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CN108351478A (zh) | 2018-07-31 |
CN108351478B (zh) | 2020-06-05 |
JP2021107942A (ja) | 2021-07-29 |
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SE1850210A1 (en) | 2018-02-23 |
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