CN1013999B - Fiber-optic multipole coupler and its mfg. method - Google Patents
Fiber-optic multipole coupler and its mfg. methodInfo
- Publication number
- CN1013999B CN1013999B CN 89102461 CN89102461A CN1013999B CN 1013999 B CN1013999 B CN 1013999B CN 89102461 CN89102461 CN 89102461 CN 89102461 A CN89102461 A CN 89102461A CN 1013999 B CN1013999 B CN 1013999B
- Authority
- CN
- China
- Prior art keywords
- optical fiber
- coupler
- fibre bundle
- fiber optic
- fiber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Landscapes
- Mechanical Coupling Of Light Guides (AREA)
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
Abstract
The present invention relates to a multi-port optical fiber coupler and a manufacture method thereof, particularly to an optical fiber coupler for optical fiber communication networks or optical fiber sensor arrays. An optical fiber bundle twisted by n optical fibers is heated by a laser bundle; the optical fiber bundle is cut off after being pulled into a taper in a melting mode; broken ends are melted into ball ends with the focusing function to form a ball end focusing type multi-port optical fiber coupler. The method can also be used for manufacturing 2*2 directional couplers and n*n star couplers. The coupler has the advantages of good structural stability and thermal stability, high coupling efficiency, low additional insertion loss, simple and convenient manufacture, reliability, etc., and satisfies different requirements of optical fiber transmission networks.
Description
The present invention is a kind of method that is used to make Networks of Fiber Communications or fibre optic sensor arra usefulness fiber coupler, belongs to the optical fiber technology field.
Making optical fiber 2 * 2 directional couplers, n * n star-type coupler and terminated optical fiber device at present adopts flame (or arc discharge) to add hot-drawing method or grinding splicing method usually.Wherein flame heating extension adopts gas flame (H for example
2-O
2Flame or CO-O
2Flame) or other temperature be higher than 1800 ℃ the direct or indirect heating optical fiber bundle of flame, its gradually thin consolidation that stretches is formed.The shortcoming of these class methods is that heating process is difficult for grasping and inconvenience realizes dynamic monitoring, and the flame scope is big, can make optical fiber protective seam damaged on every side, and the easy brittle failure of fibre bundle is difficult to carry out packaging protection, the manufactured goods poor stability.The mill spelling is fibre bundle to be arranged bunchy be spliced behind the grinding and polishing again, and the shortcoming of these class methods is processing time consuming expense material, and lower with the coupling efficiency of other optical device, can not adapt to the use needs of Networks of Fiber Communications or fibre optic sensor arra fully.
The objective of the invention is at the deficiencies in the prior art, provide a kind of easy reliable, efficient is high, be easy to carry out the method for the manufacturing fiber optic multiport coupler of dynamic monitoring, this method can be suitable for making optical fiber 2 * 2 directional couplers, n * n star-type coupler and 1 * n or n * 1 multipole coupler, the coupling mechanism of making is had insert that loss is low, coupling efficiency is high and characteristics such as structural stability, good heat stability.
The present invention adopts and adds hot-drawing method making fiber optic multiport coupler, is characterized in n root optical fiber is twisted into fibre bundle, adopts laser beam heats, makes the fibre bundle fused biconical taper, makes fiber optic multiport coupler.Fibre bundle after drawing awl place with a tight waist puts heat-shrinkable T bush and it is shunk fixingly can make 2 * 2 directional couplers or n * n star-type coupler again; If after drawing awl, fibre bundle eel-like figure place is cut off, then the fibre bundle that cuts off is vertically placed, used the end of laser beam heats cut-off part again, under gravity and surface tension synergy, the section scorification is become to have the pommel of focussing force, can make pommel focus type multipole coupler.The size of optical fiber radical n is definite as required, but requires laser beam can cover fibre bundle, and general desirable 2～100; In heating process, can adopt light power meter to carry out dynamic monitoring, so that obtain desirable luminous power distribution ratio; Can control the height of heating-up temperature by regulating laser works electric current or focus state, can utilize optical gate or power switch to realize the switch control of laser beam.
The present invention compared with prior art, have make simple, reliable, be easy to grasp and realize dynamic monitoring, advantages such as the fiber coupler of making inserts that loss is low, coupling efficiency is high, structural stability and Heat stability is good.Owing to adopt laser beam as high temperature heating source more than 1800 ℃, thereby can make full use of the various characteristics of LASER HEATING, laser beam spot is little, heat energy is concentrated, the zone that airless impacts in the melting process, optical fiber is burnt is very little, thereby be easy to take the packaging protection measure, make fiber coupler thermal stability and the structural stability made good; Because inclusion-free pollutes in the manufacturing process, thereby additional insertion loss is low; Owing to the pommel focussing force, can increase the numerical aperture of fibre bundle, so the coupling efficiency height; Owing in manufacturing process, can realize that electricity is transferred and light regulation and control system by changing laser works electric current, focusing situation and optical gate switch, therefore process easy reliable, high efficiency, yield rate height, practicality are very strong, also can further programme in advance and realize control automatically.
Method of the present invention can be chosen optical fiber radical n(n=2～100 according to different request for utilizations) make multi-form fiber optic multiport coupler, to satisfy the different needs of optical fiber transmission network.
Fig. 1 is a fibre bundle fused biconical taper synoptic diagram; Fig. 2 is that fibre bundle draws the scorification of awl section to be the pommel structural representation.
The present invention can implement in the following way: elder generation is with the protective seam and the coating removal of position to be heated in the middle of each simple optical fiber; then with the suitable twisting bunchy of n root optical fiber; and with on the framework that is placed in after the curing of 502 instant glues as shown in Figure 1; wherein a side is fixing by binding clasp (2), makes fused biconical taper to be heated district (4) be positioned at laser instrument (3) (CO for example just
2Laser instrument) laser beam institute is in light path, and opposite side is hang by rolling pulley (5), and can suitably add the weight (6) (for example plasticine etc.) of stretching usefulness, makes the fibre bundle downslide that can stretch when molten condition.As the need dynamic monitoring, can import a certain size luminous power from optic fibre input end 1, send light power meter (7) monitoring with fiber-optic output.Open laser instrument, progressively strengthen working current or change the focusing situation, fibre bundle is carried out LASER HEATING,, when to be met the requirements, just turn-off the laser instrument optical gate or cut off the electricity supply, stop heating according to the coupled optical power size control fusion drawn state of monitoring.If the making directional coupler then is set to heat-shrinkable T bush heating stretching position.With electric blower heat-shrinkable T bush is shunk, fixing protection coupling regime.If make the multipole coupler of 1 * n or n * 1, then fibre bundle fused biconical taper to suitable dimension (for example φ 30～φ 100 μ m) can be cut off at place with a tight waist again, then under vertical laying state as shown in Figure 2, utilize the laser beam heats section, make it under gravity and surface tension synergy, form the focus ball end face, make fiber optic multiport coupler with focusing performance.
Claims (4)
1, a kind of manufacture method that is used for the fiber optic multiport coupler of Networks of Fiber Communications or fibre optic sensor arra, employing adds hot-drawing method and makes, after it is characterized in that n root optical fiber twisted into fibre bundle, adopt laser beam heats fibre bundle fused biconical taper, make fiber optic multiport coupler.
2, the manufacture method of fiber optic multiport coupler according to claim 1 is characterized in that the place with a tight waist of the fibre bundle after drawing awl puts heat-shrinkable T bush, with electric blower heat-shrinkable T bush is shunk, fixing protection coupling regime.
3, the manufacture method of fiber optic multiport coupler according to claim 1, it is characterized in that after drawing awl the eel-like figure of fibre bundle is cut off everywhere, then the fibre bundle that cuts off is vertically placed, use laser beam heats cut-off part end again, under gravity and surface tension synergy, the section scorification is become to have the pommel of focussing force.
4, according to the manufacture method of claim 1,2 or 3 described fiber optic multiport couplers, it is characterized in that adopting in the manufacturing process light power meter to carry out dynamic monitoring, adopt adjusting laser works electric current and focusing situation and control heating-up temperature, utilize optical gate to realize the switch control of laser beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89102461 CN1013999B (en) | 1989-10-19 | 1989-10-19 | Fiber-optic multipole coupler and its mfg. method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89102461 CN1013999B (en) | 1989-10-19 | 1989-10-19 | Fiber-optic multipole coupler and its mfg. method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1040870A CN1040870A (en) | 1990-03-28 |
| CN1013999B true CN1013999B (en) | 1991-09-18 |
Family
ID=4854734
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89102461 Expired CN1013999B (en) | 1989-10-19 | 1989-10-19 | Fiber-optic multipole coupler and its mfg. method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1013999B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9787968B2 (en) | 2010-05-26 | 2017-10-10 | Saturn Licensing Llc | Transmission apparatus, transmission method, reception apparatus, reception method, and transmission/reception system using audio compression data stream as a container of other information |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1095426C (en) * | 2000-03-15 | 2002-12-04 | 东南大学 | Tube-type heating and drawing method for plastic optical fibre |
| US7504834B2 (en) * | 2006-12-20 | 2009-03-17 | 3M Innovative Properties Company | Detection system |
| CN101324683B (en) * | 2008-07-29 | 2010-09-22 | 中山大学 | Method for preparing polymer nanometer optical waveguide coupling beam divider |
| CN105068187B (en) * | 2015-07-31 | 2018-01-30 | 中国科学技术大学 | A kind of preparation method of particular fiber mode coupler |
| CN105891954A (en) * | 2016-07-18 | 2016-08-24 | 浙江师范大学 | Quartz capillary fused biconical taper method taking carbon dioxide laser as heat source |
| CN108333144A (en) * | 2018-01-18 | 2018-07-27 | 桂林电子科技大学 | A kind of self-reference micron plastic optical fiber liquid refractive index sensor of coupled structure |
-
1989
- 1989-10-19 CN CN 89102461 patent/CN1013999B/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9787968B2 (en) | 2010-05-26 | 2017-10-10 | Saturn Licensing Llc | Transmission apparatus, transmission method, reception apparatus, reception method, and transmission/reception system using audio compression data stream as a container of other information |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1040870A (en) | 1990-03-28 |
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| GR02 | Examined patent application | ||
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| 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 |