CN101641625A - Multicore lasso and manufacture method thereof with precision impact damper - Google Patents
Multicore lasso and manufacture method thereof with precision impact damper Download PDFInfo
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- CN101641625A CN101641625A CN200880009196A CN200880009196A CN101641625A CN 101641625 A CN101641625 A CN 101641625A CN 200880009196 A CN200880009196 A CN 200880009196A CN 200880009196 A CN200880009196 A CN 200880009196A CN 101641625 A CN101641625 A CN 101641625A
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Abstract
A kind of multicore (MF) lasso, wherein this lasso is to use the lasso molding embolus of process jig grinding to make, so that improve the buffer height tolerance of molded ferrule and the surface smoothness of region of interest (ROI), improves fabrication yield thus.
Description
Technical field
The present invention relates generally to multicore lasso and manufacture method thereof, in particular is used to make the improved method of buffer height tolerance and the improved multicore lasso of region of interest surface smoothness (multifiber ferrule) assembly.
Background technology
Many optical fiber that exist with independent or banded (ribbonized) form normally terminate with multi-core connector.For these optical fiber that interconnect with minimum amount of attenuation, corresponding multi-core connector can match, and is in contact with one another so that relative optical fiber is biased to.In order to realize optimal transmission under the situation of not using the refractive index match colloid, the fibre core of multi-core connector is through accurately calibration, and multi-core connector contacts physically.Accurate connector calibration is normally provided by a pair of pilot pin, and wherein this pilot pin is positioned at inside, hole, so that male ferrule is provided.In addition, this pilot pin also stretches out from the link of male ferrule, and is received in the corresponding pin-guide hole that is limited by female ferrule when pairing.Except the lasso calibration, the polishing geometric configuration of the geometric configuration of lasso, especially ring face also is very important for the coplanarity between optical fiber for guaranteeing that correct optical fiber touches indirectly.In this connection, to be called " region of interest " near at least a portion of each ring face of optical fiber here, and this part is preferably through polishing and/or handle so that limit a plane of extending and extending perpendicular to the mode of optic fibre hole thus perpendicular to the mode of the longitudinal axis that the hole limited.In addition, the flat surfaces that is limited by the part near each ring face of fiber openings is pinpoint with respect to optical fiber connector.Give an example, by appropriate polishing/processing geometric configuration, optical fiber can extend preset distance outside ring face, thereby is relatively setting up contacting of optical fiber and optical fiber between the optical fiber.But,, then might prevent or be extended other modes at the end face part of the relative lasso outside the optical fiber connector and contact to hinder between optical fiber and contact if polishing/processing geometric configuration is not accurately to limit.
Can be from Hickory, the conventional lasso that the Corning Cable Systems of NC obtains has not only comprised the ferrule main body that limits pilot pin and optic fibre hole, but also comprise the polishing impact damper, what wherein this impact damper served as is optical fiber to be polished to and end face polishing reference surface highly suitable apart and the appropriate coplanarity of realization between optical fiber.Concerning the lasso of end face with conventional rectangle, the polishing impact damper is normally around each side location of end face region of interest.Though optic fibre hole normally opens wide by region of interest, pin-guide hole normally opens wide by impact damper.In case optical fiber is polished to its suitable predetermined altitude, then impact damper can polish or move to a degree of depth of sinking from region of interest usually, thus the impact damper that they can physics contact matching connector.Therefore, after the optical fiber polishing, impact damper will be reduced to a height that is lower than optical fiber self projection.
With reference to Fig. 1 of prior art, what this figure showed is the multicore lasso molding embolus (molding insert) 10 of a routine.Embolus 10 comprises end face component part 12 and the impact damper component part 14 that is generally rectangle.The pin-guide hole forming pin remains on the inside of guide pin openings 16.The optic fibre hole forming pin then remains on the inside of fiber pin openings 18.Impact damper component part 14 is handled by electrodischarge machining (EDM) and is formed and/or handle (shown in the shadow region of mark 24), and region of interest 20 is then normally handled (shown in the shadow region of mark 26) that forms and/or handle by surfacing.Concerning manufacturer, when the marks for treatment that remaines in molding embolus link was checked in amplification, these treatment technologies all were conspicuous.
With reference to figure 3-5, wherein conventional lasso molding embolus is analyzed, and the end face of this molding embolus is handled through EDM and surfacing with regard to improved surface finish.Especially, with reference to figure 3, concerning the end face surface of the embolus handled through EDM, the chart of its composite roughness shows that produce is the mean roughness (R of 0.4877 μ m
a).Especially, with reference to figure 4-5, this figure shows respectively is that the end face surface smooth finish that obtains from the sample lasso embolus that those region of interest are handled through surfacings and the chart of flatness show.As shown, the surface smoothness of region of interest will produce the Ra of 0.266 μ m, and the fiber area flatness (Fig. 5) of 1.9 μ m.
For the polishing buffer height, its current tolerance is about 15+/-5 micron.But, comparatively it is desirable to controller buffer height tolerances more accurately in order to improve fabrication yield.Especially, if will permit tolerance to be specified to about 15+/-3 micron, will be very desirable so.Further, be 15+/-2 micron if tolerance is specified to, will be very desirable so.Further, concerning region of interest, its current tolerance is the Ra of 94nm.Correspondingly, comparatively it is desirable to develop a kind of improved lasso embolus surface treatment method, so that improve the surface smoothness of molded ferrule region of interest.Concerning the lasso molding embolus with improved improved surface finish, it can change into the lasso with improved improved surface finish.What thus, we needed is improved multicore lasso molding embolus disposal route.
Summary of the invention
In different embodiment, the method that the invention provides a kind of multicore lasso molding embolus and be used to handle lasso molding embolus improves the tolerance of the polishing buffer height of molded ferrule to use jig grinding, thereby improves fabrication yield.The present invention also provides a kind of method of surface smoothness of the region of interest component part that is used to improve lasso molding embolus, thereby improves the fabrication yield of lasso.These lasso embolus disposal routes comprise that the impact damper that uses jig grinder to finish this embolus constitutes the surface and region of interest constitutes the surface.Opposite with the conventional method of using the jig grinding wheel side, one of them specific embodiment comprises the bottom surface of using the coordinate emery wheel.
If will be among the present invention be used for the bumper portion of this embolus through the lasso molding embolus of jig grinding, the tolerance that is realized is about 15+/-3 micron so, and preferred then is 15+/-2 micron.Concerning the region of interest surface, its meeting is promoted to the Ra of the about 18nm that uses jig grinding technology of the present invention from the Ra of the 94nm of use surfacing technology.Bumper surface finish can be promoted to the Ra of about 18nm from the Ra of about 300nm.Compare with the embolus manufacture method of routine, use treatment technology of the present invention to significantly improve tolerance, produced the lasso of improved surface finish thus with lifting.
Here in the illustrative embodiments of Miao Shuing, multicore lasso embolus defines an end face component part that is generally rectangle.This end face defines a plurality of fiber openings, and these openings run through ferrule main body and are used to receive corresponding optical fiber end parts; Zone around the end face fiber openings is region of interest.Ferrule main body also defines at least one guide pin openings by end face, and this guide pin openings is adapted to admits one to be used for the end portion of corresponding optical fiber and the calibrated component of the respective end portions phase-splitting calibration of the relative optical fiber of pairing optical fiber ferrule.Guide pin openings defines a longitudinal axis, and this longitudinal axis to small part is extended by ferrule main body, and its longitudinal axis with optic fibre hole and ferrule main body is parallel.The a plurality of fiber openings normally center section by the ferrule main body end face are opened wide, guide pin openings then normally Outboard Sections by the ferrule main body end face open wide.Have at least one and preferably a pair of polishing impact damper on the forward direction for end face, to stretch out.Before the lasso pairing, impact damper finally can be ground to predetermined depth, and for example, impact damper can migrate to end face entirely down.
In subsequent detailed description, will set forth supplementary features of the present invention and advantage, by putting into practice invention described herein, those skilled in the art can partly know understanding supplementary features of the present invention and advantage, and wherein said invention has comprised subsequent detailed description, claim and accompanying drawing.
It should be understood that general description above and subsequent detailed description provides is illustrative embodiments of the present invention, these embodiment aim to provide a kind of general survey or framework that is used to understand claimed nature of invention and feature.In order further to understand the present invention, comprised accompanying drawing in this article, and described accompanying drawing will be introduced into and constitute the part of explanation.These accompanying drawings show different embodiments of the invention, and it is used from explanation principle of the present invention and operation together with describing one in detail.
Description of drawings
By reading detailed Description Of The Invention hereinafter with reference to the accompanying drawings, these and other features, aspect and the advantage that the present invention may be better understood, wherein:
Fig. 1 is the skeleton view of multicore (MF) lasso of prior art;
Fig. 2 is the front view according to the multicore lasso among Fig. 1 of conventional method structure, and wherein its impact damper is handled through EDM, and its region of interest is through grinding;
Fig. 3 is derived from the chart demonstration of polishing impact damper through the final roughness of the end face surface smooth finish of the sample lasso embolus among Fig. 1 of EDM processing;
Fig. 4 is derived from the chart demonstration of region of interest through the end face surface cleanliness of the sample lasso embolus among Fig. 1 of surfacing processing;
Fig. 5 is derived from the chart demonstration of region of interest through the end face flatness of the sample lasso embolus among Fig. 1 of surfacing processing;
Fig. 6 is the skeleton view according to the multicore lasso of illustrative embodiments structure of the present invention and processing;
Fig. 7 is the front view according to the multicore ring face among Fig. 6 of the present invention's structure and processing;
Fig. 8 is derived from the chart demonstration of region of interest through the end face surface cleanliness of the sample lasso embolus among Fig. 6 of jig grinding processing;
Fig. 9 is derived from the chart demonstration of region of interest through the end face flatness of the sample lasso embolus among Fig. 6 of jig grinding processing; And
Figure 10 has summarized by using EDM processing, surfacing processing and jig grinding to handle the chart of the improved surface finish of the embolus that produces.
Embodiment
Now, will come the present invention is described more fully with reference to the accompanying drawing that shows illustrative embodiments of the present invention hereinafter.But the present invention also can adopt multiple different form to implement, and the present invention should not to be interpreted into be the embodiment that is confined to set forth here.By these illustrative embodiments are provided, the present invention will be very comprehensive and complete, and scope of the present invention will fully be conveyed to those skilled in the art.In all different accompanying drawings, the parts that the index all the time of identical reference number is identical.
Among the embodiment of Miao Shuing, the invention provides a kind of multicore (MF) lasso that uses the lasso molding embolus manufacturing of handling through jig grinding here,, and improve fabrication yield thus so that improve the tolerance of the buffer height of molded ferrule.In addition, the present invention also provides the surface smoothness that promotes on the region of interest (ROI) of the lasso embolus that the region of interest surface component part by the molding embolus that passes through ground produces, improved fabrication yield thus.Used term " region of interest " to describe to be near at least a portion of the end face a plurality of fiber openings here.In all illustrative embodiments, the lasso disposal route comprises that all the impact damper that uses jig grinder to finish embolus constitutes the surface and region of interest constitutes the surface.Opposite with the conventional method of use emery wheel side during jig grinding, specific embodiment has comprised the ground of using special-purpose emery wheel bottom surface." MF lasso " used herein respectively index be lassos such as 2f, 4f, 8f, 12f, 24f, 32f, 48f, 72f.In addition, also considered application here at single fiber (IF) lasso.
Here among the embodiment of Miao Shuing, the lasso disposal route can realize that the modified lasso handles needed new tolerance, and wherein said lasso can be OptiTip and the Con2r that the Corning Cable Systems from Hickory NC obtains.If will be among the present invention be used for the bumper portion of this lasso through the lasso embolus of jig grinding, the tolerance that is realized is about 15+/-3 micron so, and preferred then is 15+/-2 micron.The region of interest surface will rise to the 18nm Ra that uses the jig grinding technology from the 94nm Ra that uses the surfacing method.This bumper surface finish will be promoted to 18nmRa from 300nm Ra.Thus, this processing from left to right and from top to bottom provides more accurate and definite buffer height.This more accurate buffer height can be offered help in manufacture process, so that move impact damper in more recursive mode under nothing " sliver " situation.At ring face, comparatively smooth impact damper surface will produce the more accurate reference surface that is used for determining the optical fiber coplanarity.
In various embodiment as described below, the multicore lasso embolus that is provided comprises the molded ferrule main body, and the port of this ferrule main body is handled after mold treatment.As here in the instructions employed, this processing comprises and is intended to remove the material that exceeds non-substantial amount or manufacturing or assembling that end face is shaped into predetermined structure are handled from end face, wherein for instance, described shaping can be undertaken by jig grinding.Processing used herein does not comprise optical fiber polishing and cleaning.End face defines a plurality of fiber openings, and these openings are to extend along corresponding optical fiber receiving end ferrule main body partly.This ferrule main body also defines at least one guide pin openings by end face, and this guide pin openings is adapted to admits one to be used for the end portion of corresponding optical fiber and the calibrated component of the respective end portions phase-splitting calibration of the relative optical fiber of pairing multicore lasso.Guide pin openings defines a longitudinal axis, and this longitudinal axis to small part is extended by ferrule main body, and parallel with the longitudinal axis of fiber openings and ferrule main body.
Such just as is known to the person skilled in the art, lasso can assemble according to any routine techniques that is used to assemble the multicore lasso.In an assembling example, lasso can be molded, so that limit a pair of guide pin openings and the fiber openings of the predetermined quantity that extends along ferrule main body, thereby admits many optical fiber.Can insert adhesive in fiber openings, what follow thereafter then is optical fiber.Concerning male ferrule, adhesive and pilot pin also are inserted in the guide pin openings.Then, the lasso accessory will be allowed to the dry in a known way or sulfuration of baking box, autoclave or the like in routine.
With reference to figure 6, the figure illustrates illustrative embodiments according to the molded optical fiber ferrule embolus of the present invention's structure and processing.As shown, the molded optical fiber ferrule embolus 30 that is installed in optical fiber connector part generally includes ferrule main body 40, and this ferrule main body 40 has around the lasso link and is generally the end face 34 of rectangle.Though the end face 34 of lasso 30 of the present invention comprises is region of interest (ROI) 32 near the end face 34 that is in the fiber openings 42, but the remainder of lasso 30 can have the shape of any expection, and the shape that at this point can have any conventional lasso, this comprising but be not limited to the multicore lasso, for example MTP, MT-RJ, MPO or SC/DC lasso, or single core retainer plate circle, for example SC, ST or LC lasso.
Ferrule main body 40 defines at least one and extends and be adapted to the fiber openings 42 of admitting the optical fiber (not shown) therein along longitudinal axis of ferrule main body 40.Though lasso can have the single core retainer plate circle that only defines single fiber openings 42, here show and the lasso described is the multicore lasso, and define and be adapted to a plurality of fiber openings 42 of admitting a plurality of optical fiber therein.In addition, though here the multicore lasso is shown as and only has single fiber openings 42, but molded ferrule can comprise the fiber openings 42 of any amount, and these openings can be arranged with any predetermined way, this comprising but be not limited to many row's light openings 42 (for example multirow, multicore array).Usually, the multicore lasso also comprises at least one and is generally a pair of guide pin openings 36 that this opening is adapted to admits corresponding calibrated component, for example pilot pin (not shown).
The described a plurality of fiber openings 42 normally center section of the end face 34 by ferrule main body 40 is opened wide, guide pin openings 36 then normally the side of the end face 34 by ferrule main body 40 partly open wide.At least one and preferably a pair of polishing impact damper 44 are outward extending on the forward direction for end face 34.Many optical fiber can extend in the position of the surperficial predetermined quantity that exceeds end face 34.In all embodiments, optical fiber can be from about 0 to about 15 microns from the scope of the protruding total amount that end face 34 stretches out, more preferably from about 3 microns to 15 microns.
In order to ensure the correct contact between the optical fiber, and guarantee that thus ring face 34 places have good light transmission, end face 34 should be polished, and this polishing is normally to carry out perpendicular to the mode of fiber openings 42.Guide pin openings 36 is parallel with fiber openings 42 usually, and this is to match lasso because guide pin openings 36 and pilot pin are used to calibration, especially matches the relative optical fiber of lasso.Impact damper 44 can provide surface polishing for a step in the processing of obtaining the optical fiber coplanarity.Equally, after polishing, the height of impact damper 44 can be determined the height of optical fiber as a benchmark.This impact damper 44 finally will be ground to predetermined depth, and for example, impact damper 44 can be adjourned end face 34 fully down.As mentioned above, after mold treatment, end face surface 32 is not passed through machining processes.
With reference now to Fig. 7,, what this figure showed is the end face surface 32 of the lasso molding embolus 30 of process jig grinding processing.As mentioned above, jig grinding can comprise the ground of having used coordinate emery wheel as known in the art bottom.In alternative embodiment, jig grinding can be included in the grinding of carrying out on the emery wheel side or using other precision rotary grinding face to carry out.Expection flatness of the present invention can also use diamond cut to produce.Use any surface of the lasso molded insert of processing described herein to determine that the weights and measures of optical fiber height and light coplanarity uses as being used for.As shown, impact damper 44 and region of interest 32 all are to pass through jig grinding, and grinding trace 38 can be seen through amplifying.
Provide an illustration lasso embolus here, and the front end of this lasso embolus is handled through jig grinding.Final products have been set forth improved result (Figure 10).Especially, with reference now to Fig. 8, what this illustrated is to be derived from the chart demonstration of polishing impact damper through the end face surface smooth finish of the sample lasso embolus of jig grinding processing.As shown, the surface smoothness of polishing impact damper has produced the big or small mean roughness (Ra) that is about 0.0124 μ m.Compared with prior art, this result is the improvement of a highly significant.Further, this disposal route allows manufacturer's controller buffer height tolerances more accurately.
With reference now to Fig. 9,, what this figure showed is the chart demonstration of region of interest through the end face flatness of the sample lasso embolus of jig grinding processing.As shown, to have produced size on fiber area be the flatness of 0.2 μ m to this region of interest.Moreover compared with prior art, this result is the improvement of a highly significant.
With reference now to Figure 10,, what this figure showed is to have summarized to use EDM processing, surfacing and jig grinding to handle the chart of the improved surface finish of the embolus that produces.By this chart as can be seen, the lasso of the embolus generation of process jig grinding processing has the most satisfactory improved surface finish.Further, jig grinding is handled the defective that has overcome prior art, and is expecting that tolerance is with lasso of interior generation.
The foregoing description provides the advantage that exceeds conventional MF lasso and relative manufacturing process.For example, illustrative embodiments described herein can improve fabrication yield in the buffer height tolerance and along aspect the improved surface finish of the region of interest of multicore ring face.
It will be apparent to those skilled in the art that under the situation that does not break away from the spirit and scope of the invention, all is feasible at various modifications and changes of the present invention.Thus, if fall at modifications and variations of the present invention in the scope of accessory claim and equivalent thereof, the present invention will comprise these modifications and changes so.
Claims (10)
1. lasso molding embolus comprises:
The region of interest component part, it has the surface through jig grinding; And
At least one impact damper forms part, and it has the surface through jig grinding.
2. as the lasso molding embolus of a molded ferrule part, comprising:
Ferrule main body, it defines at least one fiber openings that is used for admitting therein optical fiber;
End face, it is positioned at least one light around openings of ferrule main body link, and the end face plane is provided;
At least one guide pin openings is used for admitting therein pilot pin, and wherein at least one impact damper component part is positioned at around at least one guide pin openings, and wherein this end face not on described impact damper.
3. according to the molding embolus of claim 1 or 2, wherein this molding embolus produces is that the buffer height tolerance is the lasso of 15+/-3 micron.
4. according to the molding embolus of claim 1 or 2, wherein this molding embolus produces is that the buffer height tolerance is the lasso of 15+/-2 micron.
5. according to the molding embolus of claim 1～4, wherein use the region of interest surface of molded ferrule of this embolus and impact damper surface to have surface smoothness less than 25nm Ra.
6. according to the molding embolus of claim 1～5, wherein use the region of interest surface of molded ferrule of this embolus and impact damper surface to have surface smoothness less than 20nm Ra.
7. according to the molding embolus of claim 1～6, wherein this embolus is handled by using the emery wheel bottom to be subjected to jig grinding.
8. method that is used to make multicore lasso molding embolus comprises:
Region of interest component part on the molding embolus is carried out jig grinding to be handled; And
At least one impact damper component part on the molding embolus is carried out jig grinding to be handled.
9. method according to Claim 8, wherein the flatness of region of interest component part is about 0.2 μ m.
10. according to Claim 8 or 9 method, wherein the roughness of at least one impact damper component part is about 0.0124 μ m Ra.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US91922107P | 2007-03-21 | 2007-03-21 | |
| US60/919,221 | 2007-03-21 | ||
| US11/881,650 | 2007-07-27 |
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| CN101641625A true CN101641625A (en) | 2010-02-03 |
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| CN200880009196A Pending CN101641625A (en) | 2007-03-21 | 2008-03-19 | Multicore lasso and manufacture method thereof with precision impact damper |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110346883A (en) * | 2019-06-13 | 2019-10-18 | 武汉博昇光电股份有限公司 | A kind of production method and connector of separate type audio-video connector |
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- 2008-03-19 CN CN200880009196A patent/CN101641625A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110346883A (en) * | 2019-06-13 | 2019-10-18 | 武汉博昇光电股份有限公司 | A kind of production method and connector of separate type audio-video connector |
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