CN103018859A - Precise positioning and fixing structure for optical fiber coupling end - Google Patents
Precise positioning and fixing structure for optical fiber coupling end Download PDFInfo
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- CN103018859A CN103018859A CN2013100053979A CN201310005397A CN103018859A CN 103018859 A CN103018859 A CN 103018859A CN 2013100053979 A CN2013100053979 A CN 2013100053979A CN 201310005397 A CN201310005397 A CN 201310005397A CN 103018859 A CN103018859 A CN 103018859A
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Abstract
A precise positioning and fixing structure for an optical fiber coupling end comprises a packaging shell, a fixing frame, a photoelectric chip and a metalized optical fiber component. The section of the fixing frame is L-shaped, the photoelectric chip is arranged on the upper lateral side of a horizontal section of the fixing frame, the lower lateral side of the horizontal section of the fixing frame is connected with the packaging shell, and a vertical section of the fixing frame is provided with a U-shaped groove. A capillary tube is fixed at the position of the U-shaped groove and opposite to a light access face of the photoelectric chip, a metalized optical fiber section is sleeved in the capillary tube, and the coupling end is exposed outside and extends to a position close to the light access face of the photoelectric chip. The capillary tube and the metalized optical fiber section are fixedly adhered through ultraviolet curing adhesives, the capillary tube and the fixing frame are fixedly adhered through ultraviolet curing adhesives, and the capillary tube is made of quartz or ruby type light permeable materials. The precise positioning and fixing structure has the advantages of capability of solving the problem of coupling end deviation caused by the heat sealing process, convenience and simplicity in operation, high processing efficiency and high product quality.
Description
Technical field
The present invention relates to a kind of coupling fiber encapsulation technology of optoelectronic device, relate in particular to a kind of coupling fiber end accurately location and fixing structure.
Background technology
Semiconductor light-emitting device, light receiving element and fiber waveguide device are widely used in optical communication and the optical sensor system, realize conversion, modulation or switching function between light signal and the electric signal, and its core component is inner photoelectric chip.Light conduction in photoelectric chip and its place system between other assembly need to realize via optical fiber, therefore in these photoelectric devices, exist as the photoelectric chip of device core and the optically-coupled problem between the optical fiber, these problems are called in the industry the coupling fiber encapsulation of optoelectronic device.
The size that photoelectric chip advances exiting surface is quite little, in order to realize the good coupling between photoelectric chip and the metallized optical fibre assembly, need make the coupled end accurate contraposition that advances exiting surface and metallized optical fibre assembly of photoelectric chip, this wherein just relates to the problem of how coupled end of optical fiber accurately being located and fixing; For accurate location, its accuracy depends on operator's skilled operation degree and the duration of consumption, the relatively easy realization, maximum problem are on the contrary how to guarantee that the accuracy of location is not subject to the impact of positioning action in follow-up fixing operation after having finished accurate location; Generally be provided with two point of fixity at the metallized optical fibre assembly in the prior art, first point of fixity is used for the exact position between assurance coupled end and the photoelectric chip, and second point of fixity is for the relative position and the structural stability that guarantee between metallization optical fiber component and the encapsulating housing; Wherein, critical technological point is first point of fixity, in order to guarantee the accuracy of coupled end location, therefore first point of fixity needs the setting of local coupling end, industry adopts laser spot welding technique to come coupled end is fixed at present mostly, the temperature of laser spot welding is usually more than 200 ℃, the unevenness of expand with heat and contract with cold effect and scolder filling that the temperature variation that welding causes causes, cause easily near the metallized optical fibre modular construction body of coupled end that thermal deformation occurs in welding process, the coupling position that finally causes coupled end position deviation the best, device performance is descended even inefficacy, therefore, the technology difficulty of actual coupling operation is quite large, usually needs repeated several times location and fixing operation, couple state is met the demands, and production efficiency is very low; Such as a kind of typical coupled end technique for fixing in the prior art: adopt u tie with near the metallized optical fibre section cuff the coupled end on fixed mount, u tie and fixed mount are welded and fixed by laser spot welding, be difficult to accomplish being symmetrically welded the u tie two ends in the practical operation, add the caused device thermal deformation of welding high temperature, in welding process, must cause coupled end off-target coupling position.
Summary of the invention
For the problem in the background technology, the present invention proposes a kind of coupling fiber end accurately location and fixing structure, comprising: encapsulating shell, be arranged on fixed mount in the encapsulating shell, be arranged on the photoelectric chip on the fixed mount and be arranged on metallized optical fibre assembly on the encapsulating shell; Described metallized optical fibre assembly forms coupled end, metallized optical fibre section and metalized section in the axial direction from left to right successively, wherein, the turnover light of coupled end and photoelectric chip is in the face of just arranging, the structure at local coupling end position place is fixedly connected with fixed mount on the metallized optical fibre section, is fixedly connected with encapsulating shell after encapsulating shell is run through at the metalized section middle part;
Its improvement is: described fixed mount cross sectional shape shape such as L shaped, photoelectric chip is arranged at the upper side of fixed mount horizontal segment, the downside of fixed mount horizontal segment is connected with encapsulating shell, the large plane of the vertical section of fixed mount and the turnover light of photoelectric chip are in the face of just arranging, be provided with U-lag on vertical section of fixed mount, the zone that U-lag covers all covers the exiting surface that advances of photoelectric chip; The U-lag position is fixed with a kapillary on the fixed mount, and the turnover light of kapillary endoporus and photoelectric chip is in the face of just arranging, and the metallized optical fibre section is socketed in the kapillary, and coupled end is exposed outside and extend to and enter the exiting surface position near photoelectric chip; Fix by the ultra-violet curing glue bond between kapillary and the metallized optical fibre section; Fix by the ultra-violet curing glue bond between kapillary and the fixed mount; Described kapillary adopts the light transmissive material of quartz or ruby class to make.
The improvement of maximum of the present invention is: adopt adhesion process that the coupled end of metallized optical fibre assembly is installed the location, to avoid because adopting thermal weld technique to cause near the coupled end metallized optical fibre modular construction body generation thermal deformation, thereby the position that guarantees coupled end is not offset after positioning action is finished, and improves the production efficiency of device, the quality of assurance device; Although ultra-violet curing glue is tackifier commonly used in the electronic product, those skilled in the art do not use it for and substitute thermal weld technique in the photoelectric coupled device solving the coupled end offset problem that causes because of hot welding, and only with it as common bonding agent; High-quality special-purpose its shrinkage factor of ultra-violet curing glue of import can reach below 2% or 2%, almost can ignore to the position influence of coupled end; In addition, ultra-violet curing glue has good flowability when uncured, another defective of welding technology of the prior art is the mobile relatively poor of weld filler, thereby it is inhomogeneous to cause weld filler to fill, in welding process, coupled end is squeezed partially, the present invention utilizes preferably characteristics of ultra-violet curing glue flowability, adopt kapillary to come near the metallized optical fibre section the coupled end is fixed: the gap between kapillary and the optical fiber can form capillary effect by convection cell, when be coated with at an end capillaceous spread ultra-violet curing glue after, ultra-violet curing glue can flow to the other end capillaceous under the effect of capillary effect, thereby the most of zone in the endoporus length range capillaceous is infiltrated by ultra-violet curing glue, guarantee that gluing zone is enough large, improve structural stability, simultaneously, kapillary adopts the light transmissive material of quartz or ruby class to make, and can guarantee that follow-up ultraviolet light irradiation operation can shine kapillary inside, the ultra-violet curing glue of kapillary inside also is cured, guarantees structural stability.
In order to reduce device cost, described kapillary can adopt glass tube.
For the ease of smearing ultra-violet curing glue in the gap between kapillary and metallized optical fibre section, the present invention has also done following improvement: described outer end capillaceous port is hydraucone, hydraucone can make application device partly stretch in the kapillary, avoid glue to be deposited in capillary surface, and prevent that glue from overflowing.
Can generate heat during photoelectric chip work, and the encapsulating shell inner space is narrow and small, and be closed state, if temperature rise is not suppressed, certainly will cause the performance of photoelectric chip to reduce, in order to address this problem, the present invention has also done following improvement: be provided with semiconductor cooler between fixed mount and the encapsulating shell, fixed mount adopts the metal heat-conducting material to make.
Useful technique effect of the present invention is: can solve the coupled end offset problem that causes because of thermal weld technique, convenient and simple for operation, working (machining) efficiency is higher, and product quality is better.
Description of drawings
Fig. 1, structural representation of the present invention;
Parts shown in each mark are respectively among the figure: photoelectric chip 1, metallized optical fibre assembly 2, coupled end 2-1, metallized optical fibre section 2-2, metalized section 2-3, fixed mount 3, kapillary 4, encapsulating shell 5, semiconductor cooler 6, sleeve 7; The structure of position shown in the mark A is the U-lag on the fixed mount among the figure.
Embodiment
A kind of coupling fiber end is location and fixing structure accurately, comprising: encapsulating shell 5, be arranged on fixed mount 3 in the encapsulating shell 5, be arranged on the photoelectric chip 1 on the fixed mount 3 and be arranged on metallized optical fibre assembly 2 on the encapsulating shell 5;
Described metallized optical fibre assembly 2 forms coupled end 2-1 in the axial direction from left to right successively, metallized optical fibre section 2-2 and metalized section 2-3, wherein, the turnover light of coupled end 2-1 and photoelectric chip 1 is in the face of just arranging, the structure of the upper local coupling end 2-1 position of metallized optical fibre section 2-2 is fixedly connected with fixed mount 3, metalized section 2-3 middle part is fixedly connected with encapsulating shell 5 after running through encapsulating shell 5 (for the stability of the structure between optical fiber component 2 and the encapsulating shell 5 of guaranteeing to metallize, generally also be provided with sleeve 7 on encapsulating shell 5 surfaces, sleeve 7 is fixedly connected with encapsulating shell 5, is welded and fixed between sleeve 7 endoporus and the metalized section 2-3);
Its improvement is: described fixed mount 3 cross sectional shape shapes such as L shaped, photoelectric chip 1 is arranged at the upper side of fixed mount 3 horizontal segments, the downside of fixed mount 3 horizontal segments is connected with encapsulating shell 5, the large plane of fixed mount 3 vertical sections and the turnover light of photoelectric chip 1 are in the face of just arranging, be provided with U-lag on vertical section of fixed mount 3, the zone that U-lag covers all covers the exiting surface that advances of photoelectric chip 1; The U-lag position is fixed with a kapillary 4 on the fixed mount 3, the turnover light of kapillary 4 endoporus and photoelectric chip 1 is in the face of just arranging, metallized optical fibre section 2-2 is socketed in the kapillary 4, and coupled end 2-1 is exposed outside and extend to and enter the exiting surface position near photoelectric chip 1; Fix by the ultra-violet curing glue bond between kapillary 4 and the metallized optical fibre section 2-2; Fix by the ultra-violet curing glue bond between kapillary 4 and the fixed mount 3; Described kapillary 4 adopts the light transmissive material of quartz or ruby class to make.
Further, described kapillary 4 is glass tube.
Further, the outer end port of described kapillary 4 is hydraucone.
Further, be provided with semiconductor cooler 6 between fixed mount 3 and the encapsulating shell 5, fixed mount 3 adopts the metal heat-conducting material to make.
Implement for the ease of those skilled in the art, the inventor has also proposed following method for making:
1) preparation encapsulating shell 5, fixed mount 3, kapillary 4, photoelectric chip 1 and metallized optical fibre assembly 2;
2) encapsulating shell 5, fixed mount 3 and photoelectric chip 1 are positioned, behind the location three being fixed together forms integrally-built preset piece;
3) adopt the anchor clamps of different dimensions on the sextuple precision displacement table respectively preset piece and kapillary 4 to be carried out clamping, simultaneously, adopt the one dimension precision displacement table that metallized optical fibre assembly 2 is carried out clamping, adjust the position of anchor clamps on sextuple precision displacement table and the one dimension precision displacement table, kapillary 4 and metallized optical fibre assembly 2 are in place at preset piece;
4) the sextuple precision displacement table of operation and one dimension precision displacement table are accurately being located the mutual alignment between kapillary 4, coupled end 2-1, fixed mount 3 and the photoelectric chip 1 four under the active status monitoring; After having good positioning, ultra-violet curing glue is smeared in junction between kapillary 4 and fixed mount 3, ultra-violet curing glue is smeared at the place in the slit on kapillary 4 end faces, between metallized optical fibre section 2-2 and the kapillary 4, after ultra-violet curing glue flows to kapillary 4 inside, adopt ultraviolet light irradiation equipment that irradiation is carried out in the gluing position, ultra-violet curing glue is rapid curing under normal temperature condition, thereby the mutual alignment of device is fixed;
5) adopt common process, metalized section 2-3 and encapsulating shell 5 are welded and fixed (being welded and fixed herein because the distance of solder joint and coupled end 2-1 is relatively far away, can not caused coupled end 2-1 skew); With encapsulating shell 5 sealings, element manufacturing is finished at last.
Claims (4)
1. accurately location and fixing structure of a coupling fiber end comprises: encapsulating shell (5), be arranged on fixed mount (3) in the encapsulating shell (5), be arranged on the photoelectric chip (1) on the fixed mount (3) and be arranged on metallized optical fibre assembly (2) on the encapsulating shell (5);
Described metallized optical fibre assembly (2) forms coupled end (2-1), metallized optical fibre section (2-2) and metalized section (2-3) in the axial direction from left to right successively, wherein, coupled end (2-1) is faced with the turnover light of photoelectric chip (1) and is just arranged, the structure of upper local coupling end (2-1) position of metallized optical fibre section (2-2) is fixedly connected with fixed mount (3), is fixedly connected with encapsulating shell (5) after encapsulating shell (5) is run through at metalized section (2-3) middle part;
It is characterized in that: described fixed mount (3) cross sectional shape shape such as L shaped, photoelectric chip (1) is arranged at the upper side of fixed mount (3) horizontal segment, the downside of fixed mount (3) horizontal segment is connected with encapsulating shell (5), the large plane of the vertical section of fixed mount (3) and the turnover light of photoelectric chip (1) are in the face of just arranging, be provided with U-lag on vertical section of fixed mount (3), the zone that U-lag covers all covers the exiting surface that advances of photoelectric chip (1); The upper U-lag position of fixed mount (3) is fixed with a kapillary (4), the turnover light of kapillary (4) endoporus and photoelectric chip (1) is in the face of just arranging, metallized optical fibre section (2-2) is socketed in the kapillary (4), and coupled end (2-1) is exposed outside and extend to and enter the exiting surface position near photoelectric chip (1); Fix by the ultra-violet curing glue bond between kapillary (4) and the metallized optical fibre section (2-2); Fix by the ultra-violet curing glue bond between kapillary (4) and the fixed mount (3); Described kapillary (4) adopts the light transmissive material of quartz or ruby class to make.
2. coupling fiber end according to claim 1 is accurately located and fixing structure, and it is characterized in that: described kapillary (4) is glass tube.
3. coupling fiber end according to claim 1 is accurately located and fixing structure, and it is characterized in that: the outer end port of described kapillary (4) is hydraucone.
4. coupling fiber end according to claim 1 is accurately located and fixing structure, it is characterized in that: be provided with semiconductor cooler (6) between fixed mount (3) and the encapsulating shell (5), fixed mount (3) adopts the metal heat-conducting material to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100053979A CN103018859A (en) | 2013-01-08 | 2013-01-08 | Precise positioning and fixing structure for optical fiber coupling end |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013100053979A CN103018859A (en) | 2013-01-08 | 2013-01-08 | Precise positioning and fixing structure for optical fiber coupling end |
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| CN103018859A true CN103018859A (en) | 2013-04-03 |
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| CN2013100053979A Pending CN103018859A (en) | 2013-01-08 | 2013-01-08 | Precise positioning and fixing structure for optical fiber coupling end |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105739015A (en) * | 2016-04-29 | 2016-07-06 | 武汉光迅科技股份有限公司 | Coupling method of optical fiber and silicon optical chip, and silicon optical chip |
| CN108356177A (en) * | 2018-04-17 | 2018-08-03 | 苏州经贸职业技术学院 | A kind of accurate sanction filament mechanism |
| CN108594374A (en) * | 2018-06-06 | 2018-09-28 | 东莞理工学院 | A kind of optical fiber pigtail and processing method |
| CN109459827A (en) * | 2018-10-29 | 2019-03-12 | 西安微电子技术研究所 | A kind of optical-electric module air-tightness assemble method |
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| DE3630795C2 (en) * | 1986-09-10 | 1994-11-24 | Ant Nachrichtentech | Method for coupling an optical waveguide to an optoelectronic transmitting or receiving element |
| EP0264335A1 (en) * | 1986-10-17 | 1988-04-20 | Thomson Hybrides Et Microondes | Coupling module for a semiconductor laser with an optical fibre, and alignment method for this semiconductor device and this fibre |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105739015A (en) * | 2016-04-29 | 2016-07-06 | 武汉光迅科技股份有限公司 | Coupling method of optical fiber and silicon optical chip, and silicon optical chip |
| CN105739015B (en) * | 2016-04-29 | 2019-08-13 | 武汉光迅科技股份有限公司 | A kind of coupling process and its chip of optical fiber and silicon optical chip |
| CN108356177A (en) * | 2018-04-17 | 2018-08-03 | 苏州经贸职业技术学院 | A kind of accurate sanction filament mechanism |
| CN108594374A (en) * | 2018-06-06 | 2018-09-28 | 东莞理工学院 | A kind of optical fiber pigtail and processing method |
| CN109459827A (en) * | 2018-10-29 | 2019-03-12 | 西安微电子技术研究所 | A kind of optical-electric module air-tightness assemble method |
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Application publication date: 20130403 |