CN2629050Y - Combined 1*4 optical fibre tree type coupling device - Google Patents
Combined 1*4 optical fibre tree type coupling device Download PDFInfo
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- CN2629050Y CN2629050Y CN 03247236 CN03247236U CN2629050Y CN 2629050 Y CN2629050 Y CN 2629050Y CN 03247236 CN03247236 CN 03247236 CN 03247236 U CN03247236 U CN 03247236U CN 2629050 Y CN2629050 Y CN 2629050Y
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Abstract
The utility model discloses a sectional 1X4 coupling of a optical fiber tree shape, which has a simple manufacturing technique, a low optical energy consumption, a good reliability, a smaller volume and a good damp-proof performance. Two output optical fibers of a Class I 1X2 optical fiber coupling are respectively corresponded with two input optical fibers of a Class II 1X2 optical fiber coupling into an identical optical fiber. Two optical fibers of the Class II 1X2 optical fiber coupling are arranged in parallel and packaged into a whole body through a plastic heat-shrinkable tube, a thermosetting epoxy resin and an ultraviolet setting glue that are equipped at two sides. The whole body and the Class I 1X2 optical fiber coupling are straightly arranged and disposed inside a metal tube. The Class I 1X2 optical fiber coupling is packaged through the thermosetting epoxy resin and the ultraviolet setting glue. The metal tube is filled with a silica gel. The utility model can be used in the optical fiber communication field.
Description
Technical field
The utility model relates to a kind of fiber coupler, particularly relates to the modular fiber optic tree type coupling mechanism that an a kind of port is imported the output of four ports.
Background technology
Fiber coupler is a kind of optical passive component that laser distributes that is used in optical-fibre communications.1 * 2 fiber coupler is the fiber coupler that the light distribution back of an optical fiber input is exported by two optical fiber.The opticator of combined type 1 * 4 optical fiber tree type coupling mechanism is to be combined by three 1 * 2 fiber couplers, one of them 1 * 2 fiber coupler is as the first order, the light of its two output optical fibre outputs is input to the input optical fibre of two 1 * 2 fiber couplers in the second level respectively, form tree, it is distributed into four the tunnel with the laser of the input optical fibre input of 1 * 2 fiber coupler of the first order, by four output optical fibre outputs of two 1 * 2 fiber couplers in the second level.Combined type 1 * 4 an optical fiber tree type coupling mechanism, but at its four output terminals optical fiber tree type coupling mechanism of each cascade one-level or secondary 1 * 4 again, thereby realize 1 * 16 or 1 * 64 optical branch device.Combined type 1 * 4 optical fiber tree type coupling mechanism is widely used in the fiber data net, and the signal user of optical fiber television transmission system distributes, and is one of basic device of realizing fiber broadband integrated service network.
Common combined type 1 * 4 optical fiber tree type coupling mechanism adopts modular encapsulating structure at present; it is to make like this: with two output optical fibres of one 1 * 2 fiber coupler (as the first order); use the optical fiber bonding machine; input optical fibre with other two 1 * 2 fiber couplers (as the second level) welds respectively; weld protects after containing metal-cored welding protection cover thermoplastic with one again; then above-mentioned parts are fixed in the metal shell; the first order 1 * 2 fiber coupler input optical fibre is as the input optical fibre of entire device; totally four output optical fibres are as the output optical fibre of entire device for two 1 * 2 fiber couplers in the second level, and this five optical fibers passes from five holes that the metal shell side leaves respectively.Such structure, its sealing is bad, thereby humidity resistance is poor, and owing to adopted optical fiber welding technology, the weld cover that needs protection, its manufacturing process is loaded down with trivial details, and the optical loss height, the poor reliability of entire device.In order to finish the welding optical fiber fabrication technology, corresponding optical fiber must leave sufficient length, and in order to coil and to be fixed in the metal shell, all optical fiber must leave enough surpluses, and this makes that the metal shell volume is bigger, is not suitable for the demand of network and transmission system miniaturization.
The utility model content
Technical problem to be solved in the utility model is to overcome the deficiencies in the prior art, provides that a kind of manufacturing process is simple, optical loss is low, good reliability, less combined type 1 * 4 optical fiber tree type coupling mechanism of volume.
The technical scheme that the utility model adopted is: the utility model mainly is made up of shell and two 1 * 2 fiber couplers of the first order 1 * 2 fiber coupler and the second level of being arranged at wherein, and two output optical fibres of the described first order 1 * 2 fiber coupler correspond to root optical fiber with the input optical fibre of two 1 * 2 fiber couplers in the described second level respectively.
Two 1 * 2 fiber coupler parallel arranged in the described second level, and being packaged into integral body by the plastic hot draw and the heat-curable epoxy resin and the ultra-violet curing glue that are arranged on described plastic hot draw two ends, the described first order 1 * 2 fiber coupler is by another plastic hot draw and be arranged on the heat-curable epoxy resin and the encapsulation of ultra-violet curing glue at described another plastic hot draw two ends.
The encapsulation integral body of two 1 * 2 fiber couplers of the described first order 1 * 2 fiber coupler and the described second level is arranged in a linear; Described shell is a metal tube, and the output optical fibre of two 1 * 2 fiber couplers of the input optical fibre of the described first order 1 * 2 fiber coupler and the described second level stretches out outside the pipe of described metal tube; Also be filled with silica gel in the described metal tube.
Described heat-curable epoxy resin is 353ND, and described ultra-violet curing glue is UV305.
The beneficial effects of the utility model are: because two output optical fibres of the utility model first order 1 * 2 fiber coupler correspond to root optical fiber with the input optical fibre of two 1 * 2 fiber couplers in the second level respectively, and do not adopt welded structure, thereby its technology is simple, optical loss is low, good reliability; Because three 1 * 2 fiber couplers of the utility model all have the plastic hot draw, heat-curable epoxy resin and the encapsulation of ultra-violet curing glue, thereby its humidity resistance is good, especially heat-curable epoxy resin adopts 353ND, and when ultra-violet curing glue adopted UV305, its humidity resistance was better; Because two 1 * 2 fiber coupler line spread of the utility model first order 1 * 2 fiber coupler and the second level, optical fiber is linearly and do not have coiling, and its shell is a slender metal pipe, thereby its overall volume is less; Owing to also be filled with silica gel in the utility model metal tube, thereby its whole humidity resistance is further enhanced.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Embodiment
As shown in Figure 1, the utility model mainly is made up of three 1 * 2 fiber couplers 2,3,4 and metal tube 1.Three 1 * 2 fiber coupler 2,3,4 length are 28mm, and splitting ratio is 50%; Metal tube 1 is φ 4.2 * 70mm stainless-steel tube, can certainly be with other suitable metal tube.
The utility model process for making is as described below:
After two 1 * 2 fiber coupler 3,4 parallel arranged, after the plastic hot draw 5 pyrocondensations encapsulation with φ a 3 * 30mm, be packaged into heat-curable epoxy resin 6 (353ND) and transparent ultra-violet curing glue 7 (UV305) at two ends as a whole, as second level coupling mechanism; Then the input optical fibre of these two 1 * 2 fiber couplers 3,4 is made the first order 1 * 2 fiber coupler 2 on the coupling mechanism drawing machine, and by the plastic hot draw 8 and be located at the heat-curable epoxy resin 9 (353ND) at its two ends and ultra-violet curing glue 10 (UV305) encapsulation.Can realize that like this two output optical fibres of the first order 1 * 2 fiber coupler 2 and two input optical fibres of the second level 1 * 2 fiber coupler 3,4 correspond to respectively with root optical fiber, and make this fiber lengths less than 10mm.Afterwards, with the encapsulation combination of the first order 1 * 2 fiber coupler 2 with two 1 * 2 fiber couplers in the second level 3,4, linearly penetrating in the metal tube 1.The output optical fibre of two 1 * 2 fiber couplers in the input optical fibre of the first order 1 * 2 fiber coupler 2 and the second level 3,4 is respectively outside the two ends mouth of pipe protruded tube by metal tube 1, and respectively as the input and output optical fiber of the utility model integral body.Filling gel 11 in metal tube 1 toasts a few hours down for 35 ℃～65 ℃ at oven temperature at last, forms combined type 1 * 4 optical fiber tree type coupling mechanism of integral sealing.
The utility model is not owing to have optical fiber pad, each road laser to be input to the fibre loss of output than existing The little 0.05dB of the used coiling structure of technology is arranged; It is used that the utility model overall volume can be decreased to prior art The sixtieth of coiling structure.
Claims (4)
1, a kind of combined type 1 * 4 optical fiber tree type coupling mechanism, mainly form by shell and two 1 * 2 fiber couplers of the first order 1 * 2 fiber coupler (2) and the second level (3,4) of being arranged at wherein, it is characterized in that two output optical fibres of the described first order 1 * 2 fiber coupler (2) correspond to root optical fiber with the input optical fibre of two 1 * 2 fiber couplers in the described second level (3,4) respectively.
2, according to described a kind of combined type 1 * 4 optical fiber tree type coupling mechanism of claim 1, it is characterized in that, two 1 * 2 fiber couplers in the described second level (3,4) parallel arranged, and being packaged into integral body by the plastic hot draw (5) and the heat-curable epoxy resin (6) and the ultra-violet curing glue (7) that are arranged on the described plastic hot draw (5) two ends, the described first order 1 * 2 fiber coupler (2) is by the plastic hot draw (8) and be arranged on the heat-curable epoxy resin (9) and ultra-violet curing glue (10) encapsulation at the described plastic hot draw (8) two ends.
According to described a kind of combined type 1 * 4 optical fiber tree type coupling mechanism of claim 2, it is characterized in that 3, the described first order 1 * 2 fiber coupler (2) is arranged in a linear with the encapsulation integral body of two 1 * 2 fiber couplers in the described second level (3,4); Described shell is metal tube (1), and the output optical fibre of two 1 * 2 fiber couplers in the input optical fibre of the described first order 1 * 2 fiber coupler (2) and the described second level (3,4) stretches out outside the pipe of described metal tube (1); Also be filled with silica gel (11) in the described metal tube (1).
4, according to claim 2 or 3 described a kind of combined type 1 * 4 optical fiber tree type coupling mechanisms, it is characterized in that described heat-curable epoxy resin (6,9) is 353ND, described ultra-violet curing glue (7,10) is UV305.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03247236 CN2629050Y (en) | 2003-06-16 | 2003-06-16 | Combined 1*4 optical fibre tree type coupling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03247236 CN2629050Y (en) | 2003-06-16 | 2003-06-16 | Combined 1*4 optical fibre tree type coupling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2629050Y true CN2629050Y (en) | 2004-07-28 |
Family
ID=34252319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03247236 Expired - Fee Related CN2629050Y (en) | 2003-06-16 | 2003-06-16 | Combined 1*4 optical fibre tree type coupling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2629050Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102043249A (en) * | 2010-11-15 | 2011-05-04 | 深圳朗光科技有限公司 | Encapsulating structure and encapsulating method of optical fiber combiner |
-
2003
- 2003-06-16 CN CN 03247236 patent/CN2629050Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102043249A (en) * | 2010-11-15 | 2011-05-04 | 深圳朗光科技有限公司 | Encapsulating structure and encapsulating method of optical fiber combiner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |