WO2005022229A1 - 光コネクタ - Google Patents
光コネクタ Download PDFInfo
- Publication number
- WO2005022229A1 WO2005022229A1 PCT/JP2004/012902 JP2004012902W WO2005022229A1 WO 2005022229 A1 WO2005022229 A1 WO 2005022229A1 JP 2004012902 W JP2004012902 W JP 2004012902W WO 2005022229 A1 WO2005022229 A1 WO 2005022229A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- optical connector
- optical
- plate
- optical fiber
- housing
- Prior art date
Links
Classifications
-
- 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
- G02B6/3825—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres with an intermediate part, e.g. adapter, receptacle, linking two plugs
-
- 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
-
- 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
Definitions
- the present invention relates to a structure for fixing an optical fiber in an optical connector.
- a conventional optical fiber connecting device will be described (for example, Japanese Patent Application Laid-Open No. 2000-193355 (page 3, column 3, line 45 to page 4, column 5, line 15). Refer to 1-4, 7-9).
- FIG. 10 is a perspective view of an optical fiber connection device for connecting two optical connectors A and B via an adapter C (shown broken) before connection.
- the optical fiber connection device is used to connect the first optical connector A, the second optical connector B, the adapter C, and the first optical connector A and the second optical connector B to the adapter C, respectively. It consists of two lock springs 6 1, 6 1, etc.
- the first optical connector A and the second optical connector B are formed by integrally fixing a large number of optical fibers 52 arranged side by side with a synthetic resin or the like into a flat plate shape.
- An alignment member 54 that holds the alignment member in an aligned state, an outer member 55 that holds the clamp member 53, the alignment member 54, and the like, and a second member that is detachably held in a recess 55a of the outer member 55.
- the alignment member 54 can slide in the axial length direction of each optical fiber 52 inside the outer shell member 55.
- An elastic member 56 b 1 is provided on the lower surface side (the side that presses each optical fiber 52) of the second fitting piece 56 b.
- the fitting piece either the first fitting piece 56a shown in FIG. 9 (A) or the second fitting piece 56b shown in FIG. 9 (B) is selected and used. Is done. As described later, the first fitting piece 5 6 a is fitted in the recess 55 a of the outer member 55, The portion of each optical fiber 52 located inside the outer member 55 and between the clamp member 53 and the alignment member 54 is not pressed. Further, in the same state, the second fitting pieces 56 b are located inside the outer shell member 55 and at the same time each optical fiber 52 located between the clamp member 53 and the alignment member 54. Is pressed as shown in FIG. 11 to hold each optical fiber 52 in this portion in a substantially straight line.
- the adapter C includes an alignment member 57 and an outer member 58 that holds the alignment member 57.
- the alignment member 57 has a V-groove substrate 5 on which the respective V-grooves holding the respective micro-sleeve 57 a and the respective micro-sleeve 57 a are formed in parallel. 7b, a holding plate 57c for holding the V-groove substrate 57b, etc., and holds the end of each optical fiber 52 in a permeable manner.
- the first fitting piece 56 a or the second fitting piece 56 b can be detachably attached to the concave portion 55 a of each outer member 55.
- a buckling load (contact force between the end surfaces of a pair of optical fibers) is applied to each optical fiber 52 of the first optical connector A or the second optical connector B when assembling the optical connector. (A load caused by bending of at least one optical fiber).
- each of the optical fibers 52 of the optical connectors A and B is bent by using the first fitting pieces 56 a for the optical connectors A and B, respectively. Can be. Therefore, a buckling load is generated in each optical fiber 52 of both optical connectors A and B, and the end faces of each optical fiber 52 of both optical connectors A and B are in pressure contact with each other.
- each optical fiber 52 is bent or not bent. Can be selected.
- the width of the two fitting pieces 56a, 56b is the same as the width of the outer member 55, and the second fitting piece 56b has an elastic member 56b1.
- the height must be large. Therefore, it is inevitable that the optical connectors A and B become large in size, and the entirety of the second fitting piece 56 b having the first fitting piece 56 a and the elastic member 56 b 1 Must be replaced.
- the present invention is intended to provide a compact optical connector that can improve the drawbacks of the above-mentioned conventional technology, and can obtain a buckling load by causing each optical fiber to bend with a simple structure. It is.
- the present invention employs the following means in order to solve the above problems.
- An optical connector that holds a plurality of optical fibers and connects each of the optical fibers with a plurality of optical fibers of a mating optical connector, wherein the optical connector has a housing and a V-groove portion that aligns each of the optical fibers.
- V-groove substrate 3 V-groove substrate 3
- a plate that presses each of the optical fibers toward the V-groove
- a clamp that fixes the plate to the holder. If the optical connector extends in the fitting direction and the plate is a short plate, the optical fiber bends when the optical connector is connected to the other-side optical connector, and the plate is a long plate. In this case, when the optical connector is connected to the mating optical connector, each of the optical fibers does not bend, and either the short plate or the long plate is not used.
- Optical connector can choose one.
- the tip surfaces of the optical fibers of the optical connector are aligned, slightly projecting from the tip surface of the front part of the housing in the case of the short plate, and the front surface in the case of the long plate.
- the optical connector according to the above item 1 which is located on substantially the same plane as the distal end surface of the section. 4. The optical connector according to 1 above, wherein a distal end surface of each optical fiber of the optical connector and a distal end surface of each optical fiber of the mating optical connector are abutted in an alignment member of an adapter.
- the housing has a bridge part facing a part of the V-groove part, and when the long plate is used, a part of the long plate is inserted between the ridge part and the V-groove part.
- FIG. 1 shows a pair of optical connectors according to one embodiment of the present invention.
- FIG. 1 (A) is a perspective view showing a state where one optical connector is inserted into an adapter and the other optical connector is not inserted into the adapter.
- (B) is a schematic cross-sectional view showing a state where both optical connectors are fitted.
- FIG. 2 is a perspective view showing a state where a V-groove substrate is housed in a housing of the optical connector.
- FIG. 3 is a perspective view of a state in which many optical fibers are inserted into the state of FIG.
- FIG. 4 is a perspective view of a state in which a shorter plate or a longer plate is stored in the state of FIG.
- FIG. 5 is a cross-sectional view of the state shown in FIG. 4, in which (A) shows the case of the same short plate, and (B) shows the case of the same long plate.
- FIG. 6 is a perspective view of a state in which the same V-groove substrate and the same short plate or long plate are fixed to the housing by the clamp in the state of FIG. 4, that is, a state in which assembly is completed.
- FIG. 7 is a perspective view of the same clamp.
- FIG. 8 is a perspective view of an optical connector in a conventional optical fiber connection device.
- FIG. 9 is a perspective view of a fitting piece of the optical connector, where (A) shows a first fitting piece and (B) shows a second fitting piece.
- FIG. 10 is an exploded perspective view of the optical connector.
- FIG. 11 is a cutaway perspective view showing a state where the second fitting piece presses each optical fiber.
- FIG. 12 is a cross-sectional view showing a state where the first fitting piece is used for each of a pair of the optical connectors in the optical fiber connection device.
- FIG. 13 is a cross-sectional view showing a state where the first fitting piece is used for one of the pair of optical connectors and the second fitting piece is used for the other of the pair of optical connectors in the optical fiber connection device.
- FIG. 1A is a perspective view showing a state before one optical connector 1 is inserted into the adapter 21 and the other optical connector 11 is inserted into the adapter 21.
- FIG. 1B is a schematic cross-sectional view showing a state where both optical connectors 1 and 11 are fitted.
- the optical fiber 2 of the optical connector 1 is sandwiched between a resin V-groove substrate 3 and a short plate 4a.
- the optical fiber 12 of the optical connector 11 is sandwiched between the V-groove substrate 13 and the long plate 14b.
- the distal end face of the optical fiber 2 and the distal end face of the optical fiber 12 are butted in the alignment member 22 of the adapter 21. This state is called a physical connection.
- the optical fiber 2 is moved upward as shown in the figure between the left end of the short plate 4a and the right end of the alignment member 22. And buckle. Since the members holding the optical fiber 12 are the long plate 14 b and the V-groove substrate 13, the optical fiber 12 is connected to the right end of the long plate 14 b and the right end of the V-groove substrate 13 and the alignment member 22 It is fixed horizontally between the left edges. According to Since the end face of the optical fiber 2 and the end face of the optical fiber 12 are in close contact with each other, light can be transmitted well between the two optical fibers 2 and 12.
- optical connector 11 is the same as the optical connector 1.
- the housing 5 of the optical connector 1 has a U-shaped front portion 5a, an intermediate portion 5b, and a rear portion 5c on which the many optical fibers 2 are inserted. And are formed integrally with a resin material.
- the front part 5a includes a left side part 5a1, a right side part 5a2, and a bridge part 5a3 connecting the left and right side parts 5a1, 5a2.
- the left and right sides 5a1 and 5a2 are provided with engagement openings 5a1a and 5a2a when the optical connector 1 is inserted into the adapter 21 respectively.
- through holes 5a 3a of each optical fiber 2 are provided.
- the V-groove substrate 3 and the short plate 4a or the long plate 4b are accommodated in the intermediate portion 5b and the through holes 5a3a.
- the V-groove substrate 3 has a large number of V-grooves 3a. As shown in FIG. 3, each optical fiber 2 is inserted from the rear portion 5c, is placed on each groove 3a, and penetrates through holes 5a 3a.
- the short plate 4 a or the long plate 4 b is placed on each optical fiber 2 as shown in FIGS. 4 and 5 (A) and (B).
- the assembly of the optical connector 1 is completed as shown in FIG.
- the upper surface 6a of the clamp 6 is provided with a hole 6a1 and a spring portion 6a2 protruding into the hole 6a1, and the side portions 6b, 6c have openings 6b1,6. c 1 is provided for each.
- the openings 6bl and 6c1 are locked by the locking portions 5b1 provided on both side surfaces of the intermediate portion 5b.
- the spring portion 6a2 presses the short plate 4a or the long plate 4b.
- each optical fiber 2 is sandwiched by applying a predetermined pressure between each V-groove 3 a of the V-groove substrate 3 and the short plate 4 a or the long plate 4 b.
- the tip surfaces of the optical fibers 2 are aligned and slightly protrude from the tip surface of the front part 5a in the case of the short plate 4a, and the tip of the front part 5a in the case of the long plate 4b. It is located on substantially the same plane as the plane.
- the bridge portion 5a3 of the housing 5 faces a part of the V-groove substrate 3, and a part of the long plate 4b is inserted between the bridge portion 5a3 and the V-groove substrate 3. .
- the long plate 4 b is securely held in the housing 5.
- the V-groove substrate 3 and the housing 5 are formed as separate members, but the design can be changed so as to be integrally formed.
- the design of the clamp 6 can be changed so that two or more spring portions 6a2 are provided.
- each fiber By exchanging the short and long plates, each fiber can be flexed or not flexed. Therefore, it is possible to obtain a buckling load by causing each optical fiber to bend with a simple structure, and to provide a compact optical connector.
- the housing has a bridge that faces a part of the V-groove (V-groove substrate 3). If a long plate is used, a part of the long plate is inserted between the ridge and the V-groove. You. Therefore, the long plate is securely held in the housing by the simple structure.
- V-groove substrate 3 By integrally molding the V-groove (V-groove substrate 3) and the housing, the number of parts is reduced, assembly and disassembly are simplified, and costs are reduced.
- each optical fiber is directly gripped in the V-groove portion, the plate is placed on each optical fiber, and the opening provided in the clamp is locked by the locking provided in the eight housing. Is completed. Therefore, assembly and disassembly can be easily performed.
- the present invention is a connector for directly connecting an optical fiber, it is possible to cope with a case where the optical fiber needs to be replaced, and to downsize the optical connector.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Coupling Of Light Guides (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002537354A CA2537354A1 (en) | 2003-09-01 | 2004-08-31 | Optical connector |
US10/569,856 US7641397B2 (en) | 2003-09-01 | 2004-08-31 | Optical connector |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003309137A JP3830102B2 (ja) | 2003-09-01 | 2003-09-01 | 光コネクタ |
JP2003-309137 | 2003-09-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005022229A1 true WO2005022229A1 (ja) | 2005-03-10 |
Family
ID=34269546
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/012902 WO2005022229A1 (ja) | 2003-09-01 | 2004-08-31 | 光コネクタ |
Country Status (5)
Country | Link |
---|---|
US (1) | US7641397B2 (ja) |
JP (1) | JP3830102B2 (ja) |
CN (1) | CN100443938C (ja) |
CA (1) | CA2537354A1 (ja) |
WO (1) | WO2005022229A1 (ja) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4202386B2 (ja) * | 2006-12-14 | 2008-12-24 | シャープ株式会社 | 光結合装置およびその製造方法、並びに、光結合装置を用いた電子機器 |
CN102472872B (zh) * | 2009-08-10 | 2014-08-27 | 日本电信电话株式会社 | 光连接器及其组装方法 |
JP5719796B2 (ja) * | 2012-04-02 | 2015-05-20 | 株式会社フジクラ | 光ファイバ接続工具および光ファイバ接続方法 |
CN103364887B (zh) * | 2012-04-09 | 2015-03-11 | 鸿富锦精密工业(深圳)有限公司 | 光纤连接器 |
TWI563301B (en) * | 2012-12-28 | 2016-12-21 | Hon Hai Prec Ind Co Ltd | Optical signal transmission device |
ES2904515T3 (es) | 2013-01-29 | 2022-04-05 | CommScope Connectivity Belgium BVBA | Conector de fibra óptica con protección de fibra en el extremo |
US9829643B2 (en) * | 2013-09-26 | 2017-11-28 | Commscope Technologies Llc | Optical connections system and methods for positioning an optical fiber within an alignment device |
WO2016043922A1 (en) | 2014-09-19 | 2016-03-24 | Tyco Electronics Raychem Bvba | Optical fiber connection system including optical fiber alignment device |
EP3234671B1 (en) | 2014-12-16 | 2024-03-20 | CommScope Connectivity Belgium BVBA | Fiber optic connector with fiber end protection |
EP3488278A4 (en) | 2016-07-22 | 2020-06-17 | Commscope Technologies LLC | FERRULE FREE OPTICAL FIBER CONNECTOR HAVING MULTIPLE OPTICAL FIBERS |
US11347005B2 (en) | 2016-07-29 | 2022-05-31 | CommScope Connectivity Belgium BVBA | Device for aligning optical fibers |
WO2018144128A2 (en) | 2016-12-05 | 2018-08-09 | Commscope Technologies Llc | Multi-fiber ferrule-less duplex fiber optic connectors with multi-fiber alignment devices |
WO2018105370A1 (ja) * | 2016-12-09 | 2018-06-14 | 株式会社村田製作所 | コネクタ |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08292344A (ja) * | 1995-04-25 | 1996-11-05 | Japan Aviation Electron Ind Ltd | 光ファイバの保持構造、及び光コネクタ |
JP2001208938A (ja) * | 2000-01-25 | 2001-08-03 | Japan Aviation Electronics Industry Ltd | 光コネクタに使用されるコネクタプラグ |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA1309240C (en) * | 1987-03-20 | 1992-10-27 | Minoru Seino | Method of connecting optical fibers |
US6026210A (en) * | 1997-02-14 | 2000-02-15 | 3M Innovative Properties Company | Fiber optic connector spring |
JP2000010355A (ja) | 1998-06-22 | 2000-01-14 | Minolta Co Ltd | 電子写真用液体現像剤 |
JP3200735B2 (ja) | 1998-06-29 | 2001-08-20 | 日本航空電子工業株式会社 | 光ファイバ接続装置 |
-
2003
- 2003-09-01 JP JP2003309137A patent/JP3830102B2/ja not_active Expired - Fee Related
-
2004
- 2004-08-31 CA CA002537354A patent/CA2537354A1/en not_active Abandoned
- 2004-08-31 CN CNB2004800251004A patent/CN100443938C/zh not_active Expired - Fee Related
- 2004-08-31 WO PCT/JP2004/012902 patent/WO2005022229A1/ja active Application Filing
- 2004-08-31 US US10/569,856 patent/US7641397B2/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08292344A (ja) * | 1995-04-25 | 1996-11-05 | Japan Aviation Electron Ind Ltd | 光ファイバの保持構造、及び光コネクタ |
JP2001208938A (ja) * | 2000-01-25 | 2001-08-03 | Japan Aviation Electronics Industry Ltd | 光コネクタに使用されるコネクタプラグ |
Also Published As
Publication number | Publication date |
---|---|
JP3830102B2 (ja) | 2006-10-04 |
CN1846160A (zh) | 2006-10-11 |
CA2537354A1 (en) | 2005-03-10 |
US7641397B2 (en) | 2010-01-05 |
JP2005077846A (ja) | 2005-03-24 |
US20060280409A1 (en) | 2006-12-14 |
CN100443938C (zh) | 2008-12-17 |
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