CN102662213A - 1*N arc chute type optical fiber coupler - Google Patents
1*N arc chute type optical fiber coupler Download PDFInfo
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- CN102662213A CN102662213A CN2012101586834A CN201210158683A CN102662213A CN 102662213 A CN102662213 A CN 102662213A CN 2012101586834 A CN2012101586834 A CN 2012101586834A CN 201210158683 A CN201210158683 A CN 201210158683A CN 102662213 A CN102662213 A CN 102662213A
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Abstract
The invention discloses a 1*N arc chute type optical fiber coupler, relates to a coupler, and solves the problems that the N*N*(1*N) optical fiber coupler manufactured by the conventional mixed rod method has a strict requirement on the type of optical fibers to be used, the N*N*(1*N) optical fiber coupler manufactured by the conventional fused tapering method is complicated in process and low in cladding coupling efficiency, beam splitting ratio is difficult to control, extra loss is formed and the like. The coupler comprises a main optical fiber (1) and N branch optical fibers (2), wherein N is a natural number which is more than 1; the main optical fiber (1) is connected with the N branch optical fibers (2) through corresponding chutes; and the types of the optical fibers to be used are not limited, so that the application range is relatively wide. The coupler couples fiber cores, so that the coupling efficiency is relatively high; fused tapering is not used, so that beam splitting ratio is easy to control, the loss is relatively low, and the stability is relatively high; and the 1*N arc chute type optical fiber coupler is suitable for the fields of optical fiber communication, optical fiber sensing, microwave photons and the like.
Description
Technical field:
The present invention relates to a kind of 1 * N arc grooved fiber coupler, fields such as particularly suitable optical fiber communication, Fibre Optical Sensor, microwave photon.
Technical background:
Fast development along with fields such as Fibre Optical Communication Technology, passive photonic loop, Optical CATV, EPON, optical fiber sensing technologies; The application of fiber coupler also more and more widely, the relevant expert thinks that photo-coupler and wavelength division multiplexer (WDM) will become the passive device new growth point.
Recently, owing to improve constantly (having reached the um magnitude) of machining precision, make that optical fiber is carried out finishing possibly become, and be widely used in the research and development of optical fibre device at present.
Adopt the mixing rod method to prepare N * N (1 * N) plastic optical fibre coupler at present; The Chinese patent patent No. 200510025264.3 has proposed the plastic optical fibre coupler of a kind of 1 * N; But its complex structure and can only realizing with plastic optical fiber is too harsh to the type requirements of optical fiber; No. 5017206 United States Patent (USP) and one Chinese patent application numbers 98116856.6 provided two kinds of diverse ways preparation 1 * N fiber couplers; Above-mentioned two kinds of schemes are all used the method for fused biconical taper; Complex manufacturing technology, and all be that not only coupling efficiency is not high through the covering coupling; And splitting ratio is wayward, and can bring excess loss.
Summary of the invention:
Technical matters to be solved by this invention is: conventional hybrid rod legal system is made N * N (1 * N) fiber coupler; Type requirements to used optical fiber is too harsh; Traditional fused biconical taper legal system is made N * N, and (1 * N) fiber coupler complex process is coupled through covering, and coupling efficiency is not high; Splitting ratio is wayward, and can bring problems such as excess loss.
Technical scheme of the present invention is:
A kind of 1 * N arc grooved fiber coupler comprises main fiber and N branch road optical fiber, N be greater than natural number, it is characterized in that: main fiber is connected through opening corresponding groove with N branch road optical fiber; First groove face, second groove face, the 3rd groove face, the 4th groove face of first groove face of each groove of main fiber, second groove face, the 3rd groove face and every branch road optical fiber of N branch road optical fiber are smooth; Have arc shaped groove on the 5th groove face of N each branch road optical fiber of branch road optical fiber, constitute by the 4th groove face; The fluting shape of main fiber changes according to the mode of grooving of N branch road optical fiber; Second groove face applying of corresponding with it branch road optical fiber in first groove face that guarantees each groove of main fiber when main fiber is with N branch road optical fiber combination and N the branch road optical fiber; First groove face of corresponding with it branch road optical fiber is fitted in second groove face of each groove of main fiber and N the branch road optical fiber; The 3rd groove face of corresponding with it branch road optical fiber is fitted in the 3rd groove face of each groove of main fiber and N the branch road optical fiber; And the terminal air line distance of each branch road optical fiber the 4th groove face of N branch road optical fiber should to expose the fibre core width identical with corresponding with it groove behind the main fiber fluting, matees each other with the assurance corresponding groove.
The present invention compares the beneficial effect that is had with prior art:
This 1 * N arc grooved fiber coupler is easy to realize N * N, and (1 * N) is coupled, and used optical fiber kind is not added restriction, makes that its range of application is wider; This coupling mechanism uses the fibre core coupling, so its coupling efficiency is higher, so owing to control more easily without the fused biconical taper splitting ratio, loss is also lower, stability is better.
Description of drawings:
Fig. 1 is main fiber 1 left view.
Fig. 2 is main fiber 1 vertical view.
Fig. 3 is main fiber 1 front view.
Fig. 4 is N branch road optical fiber 2 left views.
Fig. 5 is N branch road optical fiber 2 front views.
Fig. 6 is the A-A sectional view of Fig. 4.
Fig. 7 is 1 * N arc grooved fiber coupler left view.
Fig. 8 is 1 * N arc grooved fiber coupler front view.
Fig. 9 is the B-B sectional view of Fig. 8.
Embodiment:
Below in conjunction with accompanying drawing the present invention is further described.
Embodiment one:
A kind of 1 * 5 arc grooved fiber coupler referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9, comprises main fiber 1 and N branch road optical fiber 2, N=2; Main fiber 1 is a general single mode fiber, fibre core 11 diameters 65 um, covering 12 thickness 30um; N branch road optical fiber 2 is general single mode fiber, fibre core 21 diameters 65 um, covering 22 thickness 30um; First groove face 23 of first groove face 13 of main fiber 1 each groove, second groove face 14, the 3rd groove face 15 and N branch road optical fiber 2 every branch road optical fiber, second groove face 24, the 3rd groove face 25, the 4th groove face 26 are smooth; First groove face 13 of main fiber 1 each groove, the 3rd groove face 15 highly are 42.5 um; Second groove face, the 14 long limits of main fiber 1 each groove are that 118.43um, minor face are 93.44um; The long limits of first groove face 23 of N branch road optical fiber 2 every branch road optical fiber are that 125um, minor face are 93.44um, and second groove face 24, the 3rd groove face 25 long limits are that 125um, minor face are 43um, and the terminal air line distance of the 4th groove face 26 groove faces is 51.23um; Second groove face 24 of corresponding with it branch road optical fiber is fitted in first groove face 13 of main fiber 1 each groove and N the branch road optical fiber 2; First groove face 23 of corresponding with it branch road optical fiber is fitted in second groove face 14 of main fiber 1 each groove and N the branch road optical fiber 2, the 3rd groove face 25 applyings of corresponding with it branch road optical fiber in the 3rd groove face 15 of main fiber 1 each groove and N the branch road optical fiber 2; Exposing the fibre core width behind main fiber 1 fluting, to be 51.23um equal with the terminal air line distance of N corresponding branch road optical fiber 2 the 4th groove face respectively.
Embodiment two:
A kind of 1 * 5 arc grooved fiber coupler referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9, comprises main fiber 1 and N branch road optical fiber 2, N=2; Main fiber 1 is a plastic optical fiber, fibre core 11 diameters 65 um, covering 12 thickness 30um; N branch road optical fiber 2 is plastic optical fiber, fibre core 21 diameters 65 um, covering 22 thickness 30um; First groove face 23 of first groove face 13 of main fiber 1 each groove, second groove face 14, the 3rd groove face 15 and N branch road optical fiber 2 every branch road optical fiber, second groove face 24, the 3rd groove face 25, the 4th groove face 26 are smooth; First groove face 13 of main fiber 1 each groove, the 3rd groove face 15 highly are 42.5 um; Second groove face, the 14 long limits of main fiber 1 each groove are that 118.43um, minor face are 93.44um; The long limits of first groove face 23 of N branch road optical fiber 2 every branch road optical fiber are that 125um, minor face are 93.44um, and second groove face 24, the 3rd groove face 25 long limits are that 125um, minor face are 43um, and the terminal air line distance of the 4th groove face 26 groove faces is 51.23um; Second groove face 24 of corresponding with it branch road optical fiber is fitted in first groove face 13 of main fiber 1 each groove and N the branch road optical fiber 2; First groove face 23 of corresponding with it branch road optical fiber is fitted in second groove face 14 of main fiber 1 each groove and N the branch road optical fiber 2, the 3rd groove face 25 applyings of corresponding with it branch road optical fiber in the 3rd groove face 15 of main fiber 1 each groove and N the branch road optical fiber 2; Exposing the fibre core width behind main fiber 1 fluting, to be 51.23um equal with the terminal air line distance of N corresponding branch road optical fiber 2 the 4th groove face respectively.
Embodiment three:
A kind of 1 * 5 arc grooved fiber coupler referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9, comprises main fiber 1 and N branch road optical fiber 2, N=2; Main fiber 1 is a general single mode fiber, fibre core 11 diameters 65 um, covering 12 thickness 30um; N branch road optical fiber 2 is plastic optical fiber, fibre core 21 diameters 65 um, covering 22 thickness 30um; First groove face 23 of first groove face 13 of main fiber 1 each groove, second groove face 14, the 3rd groove face 15 and N branch road optical fiber 2 every branch road optical fiber, second groove face 24, the 3rd groove face 25, the 4th groove face 26 are smooth; First groove face 13 of main fiber 1 each groove, the 3rd groove face 15 highly are 42.5 um; Second groove face, the 14 long limits of main fiber 1 each groove are that 118.43um, minor face are 93.44um; The long limits of first groove face 23 of N branch road optical fiber 2 every branch road optical fiber are that 125um, minor face are 93.44um, and second groove face 24, the 3rd groove face 25 long limits are that 125um, minor face are 43um, and the terminal air line distance of the 4th groove face 26 groove faces is 51.23um; Second groove face 24 of corresponding with it branch road optical fiber is fitted in first groove face 13 of main fiber 1 each groove and N the branch road optical fiber 2; First groove face 23 of corresponding with it branch road optical fiber is fitted in second groove face 14 of main fiber 1 each groove and N the branch road optical fiber 2, the 3rd groove face 25 applyings of corresponding with it branch road optical fiber in the 3rd groove face 15 of main fiber 1 each groove and N the branch road optical fiber 2; Exposing the fibre core width behind main fiber 1 fluting, to be 51.23um equal with the terminal air line distance of N corresponding branch road optical fiber 2 the 4th groove face respectively.
Embodiment four:
A kind of 1 * 5 arc grooved fiber coupler referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9, comprises main fiber 1 and N branch road optical fiber 2, N=2; Main fiber 1 is a plastic optical fiber, fibre core 11 diameters 65 um, covering 12 thickness 30um; N branch road optical fiber 2 is general single mode fiber, fibre core 21 diameters 65 um, covering 22 thickness 30um; First groove face 23 of first groove face 13 of main fiber 1 each groove, second groove face 14, the 3rd groove face 15 and N branch road optical fiber 2 every branch road optical fiber, second groove face 24, the 3rd groove face 25, the 4th groove face 26 are smooth; First groove face 13 of main fiber 1 each groove, the 3rd groove face 15 highly are 42.5 um; Second groove face, the 14 long limits of main fiber 1 each groove are that 118.43um, minor face are 93.44um; The long limits of first groove face 23 of N branch road optical fiber 2 every branch road optical fiber are that 125um, minor face are 93.44um, and second groove face 24, the 3rd groove face 25 long limits are that 125um, minor face are 43um, and the terminal air line distance of the 4th groove face 26 groove faces is 51.23um; Second groove face 24 of corresponding with it branch road optical fiber is fitted in first groove face 13 of main fiber 1 each groove and N the branch road optical fiber 2; First groove face 23 of corresponding with it branch road optical fiber is fitted in second groove face 14 of main fiber 1 each groove and N the branch road optical fiber 2, the 3rd groove face 25 applyings of corresponding with it branch road optical fiber in the 3rd groove face 15 of main fiber 1 each groove and N the branch road optical fiber 2; Exposing the fibre core width behind main fiber 1 fluting, to be 51.23um equal with the terminal air line distance of N corresponding branch road optical fiber 2 the 4th groove face respectively.
Claims (1)
1. 1 * N arc grooved fiber coupler comprises main fiber (1) and N branch road optical fiber (2), and N is the natural number greater than 1, it is characterized in that: main fiber (1) is connected through opening corresponding groove with N branch road optical fiber (2); First groove face (23), second groove face (24), the 3rd groove face (25), the 4th groove face (26) of first groove face (13) of each groove of main fiber (1), second groove face (14), the 3rd groove face (15) and every branch road optical fiber of N branch road optical fiber (2) are smooth; Have arc shaped groove on the 5th groove face (25) of each branch road optical fiber of N branch road optical fiber (2), constitute by the 4th groove face (26); The fluting shape of main fiber (1) changes according to the mode of grooving of N branch road optical fiber (2); Second groove face (24) applying of corresponding with it branch road optical fiber in first groove face (13) that guarantees each groove of main fiber (1) when main fiber (1) makes up with N branch road optical fiber (2) and N the branch road optical fiber (2); First groove face (23) of corresponding with it branch road optical fiber is fitted in second groove face (14) of each groove of main fiber (1) and N the branch road optical fiber (2); The 3rd groove face (25) of corresponding with it branch road optical fiber is fitted in the 3rd groove face (15) of each groove of main fiber (1) and N the branch road optical fiber (2); And the terminal air line distance of each branch road optical fiber the 4th groove face (26) of N branch road optical fiber (2) should to expose the fibre core width identical with corresponding with it groove behind main fiber (1) fluting, matees each other with the assurance corresponding groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101586834A CN102662213A (en) | 2012-05-21 | 2012-05-21 | 1*N arc chute type optical fiber coupler |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012101586834A CN102662213A (en) | 2012-05-21 | 2012-05-21 | 1*N arc chute type optical fiber coupler |
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| CN2012101586834A Pending CN102662213A (en) | 2012-05-21 | 2012-05-21 | 1*N arc chute type optical fiber coupler |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04186305A (en) * | 1990-11-21 | 1992-07-03 | Honda Motor Co Ltd | Optical fiber coupler |
| CN1258012A (en) * | 1998-11-27 | 2000-06-28 | 三星电子株式会社 | Correction device for 1 X N light wave-division demultiplexing and 1 x N light wave-division demultiplexer |
| CN2927081Y (en) * | 2006-07-24 | 2007-07-25 | 深圳飞通光电子技术有限公司 | Planar optical waveguide power beam splitter |
| CN101046532A (en) * | 2007-02-08 | 2007-10-03 | 东南大学 | Compact 1XN light power shunt |
-
2012
- 2012-05-21 CN CN2012101586834A patent/CN102662213A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04186305A (en) * | 1990-11-21 | 1992-07-03 | Honda Motor Co Ltd | Optical fiber coupler |
| CN1258012A (en) * | 1998-11-27 | 2000-06-28 | 三星电子株式会社 | Correction device for 1 X N light wave-division demultiplexing and 1 x N light wave-division demultiplexer |
| CN2927081Y (en) * | 2006-07-24 | 2007-07-25 | 深圳飞通光电子技术有限公司 | Planar optical waveguide power beam splitter |
| CN101046532A (en) * | 2007-02-08 | 2007-10-03 | 东南大学 | Compact 1XN light power shunt |
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Application publication date: 20120912 |