CN1211678C - Plastic fiber connector - Google Patents
Plastic fiber connector Download PDFInfo
- Publication number
- CN1211678C CN1211678C CN 03145056 CN03145056A CN1211678C CN 1211678 C CN1211678 C CN 1211678C CN 03145056 CN03145056 CN 03145056 CN 03145056 A CN03145056 A CN 03145056A CN 1211678 C CN1211678 C CN 1211678C
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- plastic optical
- connector
- optical fiber
- optical fibre
- nut
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Abstract
The present invention relates to an optical element, particularly to the structure of a plastic optical fiber connector and a connection method thereof. The present invention is characterized in that the internal surfaces of screw caps (1 and 3) has internal conic surfaces and internal threads, and through holes are arranged in connecting bodies (2 and 7); the external surface of each connecting body has screw threads, and both ends of the connecting body form cones; 3 to 5 through grooves are arranged on each cone, and the through grooves have equal angles in a radial direction. When the screw caps (1) and (3) are screwed down, the internal conic surfaces can make tapered claw-like bodies on the connecting bodies clamp plastic optical fibers under stress. The plastic fiber connector has the advantages of simple structure, convenience, high reliability and low price; therefore, the present invention is suitable for large-scale popularization and application.
Description
Affiliated technical field
The present invention relates to a kind of optical element, particularly relate to structure of a kind of plastic optical fibre connector and attaching method thereof.
Background technology
Plastic optical fiber be a kind of cost low, in light weight, be convenient to install and use, soft data transmission media, it is particularly suitable for short distance, middle low capacity, uses the many system'ss (as Access Network) of connector.In existing wire transmission medium, long apart from hicap, belong to the application of quartzy single-mode fiber undoubtedly.And short distance, medium and small capacity system mainly are the applications of copper cabling now, but along with the development of plastic optical fiber, and the decline of it and relevant components and parts cost adds the growth of user to bandwidth demand, and party morning is substituted by plastic optical fiber.The plastic optical fiber diameter is big, connect and aim at easily, for core diameter is that phase step type plastics optical fibre and the core diameter of 980 μ m is the gradational plastic optical fibre of 500 μ m, even have in the connection ± skew of 30 μ m do not have a strong impact on coupling loss (increasing loss 0.03dB approximately), thereby can use cheap injection moulding connector, thereby significantly reduce the total cost of system.Present existing plastic optical fibre connector, and in the plastic optical fibre connector patent, realized between plastic optical fiber and light emission, light receiving element and the plastic optical fiber one to one or two pairs two be connected.In the plastic optical fiber LAN (Local Area Network) and Access Network of reality, need to use various coupling mechanisms.At present, use comparatively general be mixing rod taper coupler and mixing rod star-type coupler (seeing Fig. 3, Fig. 4), these coupling mechanisms also need connector.A kind of method that solves this class coupling mechanism connection in the past is to adopt heat-shrinkable T bush [optical engineering .38 rolls up 1024～1028 pages of 6 phases, and .Opt.Eng.38 (6) 1024～1028.1999 in 1999].Its durability of this connector, reliability are all inadequate.
Summary of the invention
In order to overcome deficiencies such as durability, reliability that existing heat-shrinkable T bush connects be relatively poor, the invention provides a kind of plastic optical fibre connector, this class of mixing rod coupling mechanism and phase step type plastics optical fibre is connected the another kind of solution that proposes, make it more solid, reliable, and method is also fairly simple.
The technical solution adopted for the present invention to solve the technical problems is: this plastic optical fibre connector, comprise two nuts and a connector composition, and the inside surface of each nut has inner conical surface and internal thread; A through hole is arranged in the connector, and outside surface is a cone for the screw thread two ends, has 3-5 groove on the cone, these grooves radially are being equal angles, when tightening nuts, its inner conical surface can make the stressed clamping of claw shaped body of band tapering on the connector, and claw shaped body is then held plastic optical fiber tightly; Each nut is identical with thread rotary orientation on the connector; The material of two nuts and connector is preferentially selected transparent thermoplastics polycarbonate for use with the hot expansibility thermoplastics similar to plastic optical fiber so that in connection procedure be connected the position and the situation of observing plastic optical fiber afterwards; The plastic optical fiber diameter that the present invention is suitable for but considers that with practical conditions diameter should be advisable greater than 400 μ m, is preferably more than 600 μ m in principle without limits; When junction loss being limited under the low especially situation, can between coupling mechanism both ends of the surface and fiber end face, use index-matching fluid.
The invention has the beneficial effects as follows: the coupling arrangement between another mixing rod coupling mechanism and the phase step type plastics optical fibre is provided.This plastic optical fibre connector is simple in structure, convenient, reliable, cheap.Be suitable for large-scale promotion application.
Description of drawings
The cut-open view that Fig. 11 * 7 mixing rod taper coupler is connected with plastic optical fiber
The cut-open view that Fig. 27 * 7 mixing rod star-type couplers are connected with plastic optical fiber
Fig. 31 * 7,1 * 19 mixing rod taper coupler
Fig. 47 * 7,19 * 19 mixing rod star couplers
The cut-open view that two plastic optical fibers of Fig. 5 connect
Embodiment
Implement 1:
The (see figure 1) that is connected of 1 * 7 mixing rod taper coupler and phase step type plastics optical fibre.Mixing rod taper coupler 4 is taper, and a side is connected with single plastic optical fiber, and opposite side is connected (see figure 3) with the plastic optical fiber bundle of being made up of 7 optical fiber.Nut 1, connector 2 are polycarbonate with the material of nut 3, make by injection mo(u)lding.Nut 1, nut 3 have inner conical surface and internal thread.When tightening nuts 1, nut 3, inner conical surface can make the stressed clamping of claw shaped body of three band taperings on the connector 2, and claw shaped body is then held plastic optical fiber tightly.The tapering of inner conical surface and claw shaped body is 1/20.Nut 1, nut 3 are identical with thread rotary orientation on the connector 2, are dextrorotation.Larger aperture on the connector 2 is suitable with the plastic optical fiber bundle of band sheath; Connector 2 less straight hole length are L.Use a bit of heat-shrinkable T bush 6 that 7 plastic optical fibers of removing one section sheath are tightly fettered, after neat cutting, form the plastic optical fiber bundle perpendicular to the fibre bundle direction.Minimum for junction loss is dropped to, between the end face of coupling mechanism and plastic optical fiber, need use index-matching fluid.Index-matching fluid is the silicone oil identical with fiber core refractive index, and for the plastic optical fiber of polymethylmethacrylate (PMMA) core, its refractive index is 1.49.With the matching fluid bottle of band aciculiform point mouth, splash into index-matching fluid to the bellmouth of connector 2,1 * 7 mixing rod taper coupler 4 is inserted into the position of matching, splash into index-matching fluid once more.The plastic optical fiber bundle that insertion is made up of 7 plastic optical fibers makes it closely contact with mixing rod, tightening nuts 3.Insert the single plastic optical fiber of handling end face well at opposite side, the plastic optical fiber length of removing sheath is (L+1) millimeter, tightening nuts 1, and connection is finished.
Implement 2:
Be connected (see figure 2) between 7 * 7 mixing rod star couplers and the phase step type plastics optical fibre.7 * 7 mixing rod star couplers are straight clavate (as Fig. 4), and 7 * 7 mixing rod star couplers 5 are inserted into the position that connector 7 matches.Minimum for junction loss is dropped to, between the end face of coupling mechanism and plastic optical fiber, need use index-matching fluid.Matching fluid bottle with band aciculiform point mouth splashes into index-matching fluid in the aperture of connector 7; The plastic optical fiber bundle that insertion is made up of 7 plastic optical fibers, tightening nuts.Splash into index-matching fluid at opposite side; Insert same plastic optical fiber bundle, it is closely contacted with mixing rod, tighten another nut 3, connection is finished.
Implement 3:
Connection between two plastic optical fibers.In the time will realizing two connections between the plastic optical fiber, connect as shown in Figure 5.Connector 7 apertures are less, are used for realizing the butt joint of optical fiber.Minimum for junction loss is dropped to, between the end face of coupling mechanism and plastic optical fiber, need use index-matching fluid.Matching fluid bottle with band aciculiform point mouth injects index-matching fluid in aperture.Plastic optical fiber is removed one section sheath, handle end face well.Removing the length of the plastic optical fiber of sheath, is that 1/2nd aperture lengths add 1 millimeter.The plastic optical fiber of handling end face well is inserted connector 7.Tightening nuts 1 is tightly clamped plastic optical fiber.Then that another root is same plastic optical fiber inserts from opposite side, and two optical fiber are closely contacted, and tightens another nut 1.Connection is finished.
Claims (8)
1. plastic optical fibre connector, comprise two nuts (1,3) and a connector (2,7) composition, it is characterized in that: the inside surface of nut (1,3) has inner conical surface and internal thread, connector has a through hole in (2,7), its outside surface is a cone for the screw thread two ends, has 3-5 groove on the cone, and these grooves radially are being equal angles, when tightening nuts (1) and nut (3), its inner conical surface can make the stressed clamping plastic optical fiber of claw shaped body of the band tapering on the connector (2,7).
2. plastic optical fibre connector according to claim 1 is characterized in that: the through hole of connector (2) is stepped through hole, and the through hole of connector (7) is single diameter through hole.
3. plastic optical fibre connector according to claim 1 is characterized in that: the material of nut (1,3) connector (2,7) is polycarbonate.
4. plastic optical fibre connector according to claim 1 is characterized in that: the diameter of optical fiber should be greater than 400 μ m.
5. plastic optical fibre connector according to claim 1 is characterized in that: when junction loss being limited under the low especially situation, can use index-matching fluid between coupling mechanism both ends of the surface and fiber end face.
6. plastic optical fibre connector according to claim 1 is characterized in that: the tapering of nut (1,3) inner conical surface and connector (2,7) claw shaped body is 1/20.
7. plastic optical fibre connector according to claim 1 is characterized in that: nut (1,3) is identical with the thread rotary orientation of connector (2,7).
8. plastic optical fibre connector according to claim 4 is characterized in that: the diameter of optical fiber should be greater than 600 μ m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03145056 CN1211678C (en) | 2003-06-17 | 2003-06-17 | Plastic fiber connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03145056 CN1211678C (en) | 2003-06-17 | 2003-06-17 | Plastic fiber connector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1487322A CN1487322A (en) | 2004-04-07 |
| CN1211678C true CN1211678C (en) | 2005-07-20 |
Family
ID=34155864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03145056 Expired - Fee Related CN1211678C (en) | 2003-06-17 | 2003-06-17 | Plastic fiber connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1211678C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101334507B (en) * | 2007-06-30 | 2010-04-21 | 中国科学院西安光学精密机械研究所 | Plastic Optical Fiber Rotary Connector |
| CN102129100B (en) * | 2010-01-12 | 2012-09-26 | 东莞市一普实业有限公司 | Plastic optical fiber connector |
| CN114415299B (en) * | 2022-03-30 | 2022-06-24 | 深圳市埃尔法光电科技有限公司 | Optical fiber signal direct-guiding type optical module |
-
2003
- 2003-06-17 CN CN 03145056 patent/CN1211678C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1487322A (en) | 2004-04-07 |
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |