CN1025370C - Optical connector and mothod of making same - Google Patents

Optical connector and mothod of making same Download PDF

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Publication number
CN1025370C
CN1025370C CN 87107863 CN87107863A CN1025370C CN 1025370 C CN1025370 C CN 1025370C CN 87107863 CN87107863 CN 87107863 CN 87107863 A CN87107863 A CN 87107863A CN 1025370 C CN1025370 C CN 1025370C
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CN
China
Prior art keywords
optical
optical fiber
optical conenctor
substrate
pilot pin
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Expired - Fee Related
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CN 87107863
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Chinese (zh)
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CN87107863A (en
Inventor
柿井俊昭
齐藤和人
铃木修三
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Sumitomo Electric Industries Ltd
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Sumitomo Electric Industries Ltd
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Priority claimed from JP27253886A external-priority patent/JPS63125908A/en
Priority claimed from JP62114236A external-priority patent/JP2569329B2/en
Priority claimed from JP62224373A external-priority patent/JPH07104459B2/en
Priority claimed from JP22942087A external-priority patent/JPS6472104A/en
Application filed by Sumitomo Electric Industries Ltd filed Critical Sumitomo Electric Industries Ltd
Publication of CN87107863A publication Critical patent/CN87107863A/en
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Publication of CN1025370C publication Critical patent/CN1025370C/en
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Abstract

An optical connector comprises an optical fiber connector ferrule which comprises a substrate plate having at least one optical fiber groove and pin grooves each being formed at one surface thereof, and a cover plate joined to the substrate plate to form at least one optical fiber groove holes into which an optical fiber is inserted; a guide pin means to be inserted into the pin grooves for coupling the optical fiber connector ferrule with another; and means for absorbing the variation in the diameter of the guide pin means. A process for producing an optical connector is aslo disclosed.

Description

Optical connector and mothod of making same
The present invention relates to a kind of wire rod alignment connector, particularly a kind of optical conenctor that the optical conenctor muff coupling is fixed on optical fiber together light wave communication system appropriate location with pilot pin.The invention still further relates to a kind of method of making described connector.
Fig. 1 is the rough schematic of an exemplary of prior art optical conenctor.In Fig. 1, numeral 10 expressions are by the optical conenctor sleeve of the moulding one-tenth of resin, and ribbon fiber (A) comprises five optical fibers 15, optical fiber 15 for example 0.3 millimeter, is fixed side by side and is gone up in position with a spacing, pin-guide hole 16 is formed on the both sides of ribbon fiber, and its spacing is 3.6 millimeters.17 expression diameters are 0.7 millimeter pilot pin for example.Two such pilot pins 17 are inserted in the pin-guide hole 16 that forms on the optical conenctor sleeve 10, and then they are inserted another be on the sleeve with first sleeve registration position in the corresponding hole, these two optical conenctors just have been bound up on one.
With term " optical conenctor sleeve " representative optical fiber is fixed on the appropriate location so that the most important basic building block of the optical conenctor that they are bound up among the present invention.
When connecting multifilament optical conenctor 10, must be very accurate to getting optical fiber in the connector and the optical fiber in another connector, reduce to minimum so that connect loss.This requirement is particularly strict when to connect core diameter only be single-mode fiber about 10 microns, even this optical fiber also will cause very big connection loss when axially mismatch is not more than 1 micron between optical fiber.For avoiding producing this problem, must go up the optical fiber that will be installed on the optical conenctor in position with very high precision placement.When connecting two optical conenctors, also need pilot pin to locate them with pinpoint accuracy.
For the low-loss that realizes above-mentioned this multifilament optical conenctor connects, topmostly during all require to be made in optics guide hole and pin-guide hole on the position that designs with accurate machining exactly, even but this requirement is met, between optical fiber guide hole and the optical fiber and between pin-guide hole and pilot pin, still have some spaces, owing to there is this space, always can not reach low connection loss, even have only about 0.5 micron between optical fiber guide hole and the optical fiber and between pin-guide hole and the pilot pin and space, under extreme case, optical fiber also has the axial dipole field about 1 micron.
Therefore, realize low connection loss, just must eliminate these spaces fully, or each space almost completely is reduced to zero.Yet, consider the internal diameter deviation of optical fiber guide hole and pin-guide hole and the outside diameter tolerance of optical fiber and pilot pin, reduce these spaces easy thing of part anything but.If the internal diameter of optical fiber guide hole less than the external diameter that will insert optical fiber wherein, so not only can not insert into optical fiber, and optical fiber itself also may fracture.If the internal diameter of pin-guide hole less than the external diameter that will insert pilot pin wherein, so, the result of this pin-guide hole of pilot pin pressure, or is that pilot pin oneself breaks, or is that pin-guide hole breaks.
To insert a situation in the pin-guide hole on the multifilament optical connector to pilot pin below imagining.If the machining accuracy of pilot pin and pin-guide hole is all within ± 1 micron, the pilot pin diameter should be 0.700 millimeter, the endoporus of pin-guide hole should be 0.701 millimeter, and the external diameter of some pilot pin has been made 0.701 millimeter so probably, and the internal diameter of some pin-guide hole has been made 0.700 millimeter.In this case, the neither one pilot pin can be inserted in arbitrary pin-guide hole.
As mentioned above, up to now, making the space that exists between guide hole and wire rod (latter will be fixed in the appropriate location among the former) reduce to the minimum effort of being made is restricted because of the precision problem of machining, this just means, exists certain limit for reducing the effort that connects the connection loss that produces in the connector (such as the multifilament optical conenctor).So these problems have become the major obstacle that reaches optical conenctor low-loss connection.
For this optical conenctor as shown in Figure 1, need some spaces (g) (as shown in Figure 2) to allow pilot pin 17 to insert pin-guide hole 16 in the optical conenctor sleeve 10 smoothly.Yet, the problem that the connection loss that provides this space (9) just to cause to produce when connecting optical conenctor (particularly being used to reach the pinpoint optical conenctor that core diameter is 10 microns a single-mode fiber for those) circulates and changes because of repeatedly connection/dismounting.
More particularly, if because space (g) because of connections/dismounting round-robin result 0.5 micron variation takes place, connect the optical conenctor that produces 0.5 decibel of connection loss will produce pact ± 0.3 decibel after repeatedly connection and disassembling section variation so at first.This variation is the connection loss value greater than beginning.Therefore, connect and low-loss, obviously will reduce because this connection that the space (g) of pilot pin 17 causes/demolition variation in order to realize the latent fixed of single mode fibers.But, if reduce space (g), it is just difficult to make pilot pin 17 insert pin-guide hole 16 smoothly.
These problems can be resolved by the pilot pin that uses a kind of elastomeric slit pipe 18 forms as shown in Figure 3, and this otch pipe 18 has a longitudinal cut 18a.Yet, making external diameter is 0.7 millimeter, wall thickness is 0.1 millimeter an otch pipe, must make the internal diameter with 0.5 millimeter to pipe, and is difficulty and very expensive with the accurate pipe processing of this micromachining with the accuracy that obtains complete circularity on its external diameter and other form parameter.
In order to reduce the size of optical conenctor, will reduce the size of pilot pin, and the result, the diameter of each pilot pin has to be reduced to 0.5 millimeter, even 0.3 millimeter, this makes that the machining of elastomeric slit pipe 18 is more and more difficult.
Fig. 4 is another example, is the sectional view that is used as the multifilament silicon chip array optical connector 160 of optical connection member usually.Two silicon chip guide plates 161 that energy is all carved on its two sides are stacked together mutually, and optical fiber (A) is aimed on matching surface.Have the silicon guide plate 162 that connects guide groove and be mounted on another surface of each silicon chip guide plate 161, fix of the connection of this assembly with firm optical fiber with a clamping plate (not shown).
Because optical conenctor shown in Figure 4 does not use any pilot pin, therefore there are not problems more recited above.Yet, in this optical conenctor, the optical fiber connection reaches with guide groove, and the optical fiber that is coupled must then be fixed up with clamping plate, so this array connector can not resemble and easily be connected, dismantles or change with one other channel the common optical conenctor.In addition, this array connector by the silicon manufacturing very easily crashes and produce breach at its edge easily when collision (collision that produces when it is unloaded etc.).Moreover even the optical fiber that is coupled is fixing by clamping plate, but pressure is not applied directly on the surface that optical fiber connects mutually, and therefore, the joint that is provided by this optical conenctor is more weak for tensile force.
Fig. 5 is the sectional view of another example of expression prior art optical fiber coupling component, and in these parts, the slotted substrate that is formed with optic fibre channel guide on it engages with a plate that has one deck binding material, and this layer binding material is placed between substrate and this plate.As shown in the figure, the plate 201 that downside has one deck binding material 203 overlays above the slotted substrate 202 that upper surface has optic fibre channel guide 204 and pilot pin groove 205, and plate 201 and slotted substrate 202 usefulness one deck binding materials 203 are bonded together and have formed optical fiber guide hole and pin-guide hole.
Can know and find out by the Fig. 6 at interface is shown with the size of amplifying between plate 201 and the slotted substrate 202, this bonding material layer 203 do not exist only between plate 201 and the substrate 202 at the interface and also be present in upper plate 201 places above the optic fibre channel guide 204, the thickness t of the layer 203 on the guide groove 204 3Usually always greater than bed thickness t at the interface between plate 201 and the substrate 204 1, t 3Compare t 1The thick amount that goes out corresponding with that part of unnecessary binding material of extruding from interface zone.
Supposing to be inserted in each optical fiber (A) in the optical fiber guide hole contacts and keeps suitable position by setting up with three points (a) (see figure 7) in each optic fibre channel guide 204.So, even between plate 201 and slotted substrate 202, exist one deck binding material 203(as shown in Figure 8), if tack coat 203 has uniform thickness as shown in Figure 8, the optical fiber (A) that has same diameter with optical fiber shown in Figure 7 also contacts the position that keeps suitable by setting up with three points in optic fibre channel guide.
Yet when making optical fiber coupling component shown in Figure 6, plate 201 makes that layer binding material 203 solidify and is bonded together with slotted substrate 202 by bringing some pressure to bear.This just makes the tack coat 203 that exists between two members extrude to optic fibre channel guide 204 places.As a result, the thickness t of the tack coat 203 on groove 204 tops 3Just will be greater than the thickness t of other location tack coat 1(as shown in Figure 6), thus make optical fiber can not be inserted into groove 204 with predetermined outer diameter.
Absorb and suction-operated the shortcoming that the tack coat on the optic fibre channel guide 204 is easy to be infected with dust particle and other exterior materials in addition and produces high and low point on the wall of groove 204 owing to have.In addition, because dust particle has produced fuzzy hole profile, also can when the mould sectional drawing of measuring flume 204 is measured, cause inaccurate.
The still another example of prior art optical fiber coupling component shown in Fig. 9 A and the 9B.As shown in the figure, optical fiber (B) is inserted in the optic fibre channel guide 323 that forms on substrate 321 upper surfaces, and grip block 322 is placed on the slotted substrate 321, is placed with a layer binder therebetween, and to this subassembly pressurization, (B) is fixed in the optic fibre channel guide 323 optical fiber from top.
But the optical fiber coupling component of this prior art has following point:
(1). coupling component assembles by optical fiber is folded to be clipped in to fix between slotted substrate and the grip block, this method is unsuitable for assembling the multifilament coupling component, because this need use the substrate and the grip block of fluting, thereby make that the processing of optical fiber is complicated and exist a lot of difficulties aspect the accurate assembly operation reaching.
(2). cementing agent used between slotted substrate and the grip block may flow out from the side in the gap between two elements, and the outflow that will handle cementing agent simple thing by no means.
(3) if. before optical fiber is placed into these grooves cementing agent is added in the optic fibre channel guide, the operator just is not easy to guarantee optical fiber is placed on the correct position so.If add cementing agent after optical fiber is placed into guide groove, then cementing agent just can not filled up fully in the bottom of guide groove.
Shown in Figure 10 A to 10C, be formed with two pin-guide holes 421 on the optical conenctor sleeve 20 with resin-molded formation.Each optical fiber (B) in the fiber array (A) is gone up in position with respect to pin-guide hole 421 is accurately fixing.Two pilot pins 422 begin to be inserted in the pin-guide hole 421 of an optical conenctor sleeve, and then they are inserted another be on the sleeve with the first sleeve registration position place in the corresponding hole, two sleeves are bound up shown in Figure 10 C like that, optical conenctor shown in Figure 10 is four fine types, and its use external diameter is 0.7 millimeter a pilot pin; On the line in the axle center of pin-guide hole 421, the distance between the pin-guide hole axle center is 3.600 millimeters to each root optical fiber (B) with 0.25 millimeter spacing arrangement.
In actual applications, above-mentioned optical conenctor sleeve will stand the suitable processing second time according to its concrete application method.For example, sleeve is made flange, or shown in Figure 11 A, the grip wound packages forms an optical conenctor latch 423 that is easy to connect or disassembles from optical conenctor socket 424 in a shell.Otherwise, firm for the connection that makes two sleeves, with the anchor clamps 425 of the sort of type shown in Figure 11 B they are fixed.
There is following problem in the prior art optical conenctor that use pilot pin shown in Figure 10 A to 10C reaches connection: promptly after disassembling these two optical conenctors, do not know that two those meetings in the sleeve remain with pilot pin 422.If use two optical conenctor plugs 423 and a socket 424 with the connecting method shown in Figure 11 A, when disassembling pilot pin 422 and being inserted in plug of the inside at first, pilot pin takes place sometimes be left on situation in another plug.If this another plug is to be positioned in machine or the shell, perhaps it is the element (for example being a jack or an optics output terminal) on the wall, pilot pin on other joints of optical fibre just can not connect mutually with another plug in the socket, does not leave pilot pin unless the operator knows really in this another plug.
Behind the dismounting optical conenctor pilot pin stay position wherein randomness can by with pilot pin with being resolved in the permanently selected regularly fiber optic connector sleeve of cementing agent, but this just makes that connecting connector sleeve that two inside all permanently are fixed with pilot pin has become impossible thing.Another solution is in a predetermined side of each connector sleeve a pilot pin to be installed permanently, for example all be positioned on the right side of sleeve, but because in optical communication, sometimes need to connect two ribbon fibers that matching relationship is arranged between the identification number of each root optical fiber, in this case, before with a ribbon fiber and the connection of another root ribbon fiber, may need this root ribbon fiber is turned over turnback, the use of top so the sort of method is restricted.
Pilot pin is permanently secured in the fiber optic connector sleeve also has another problem: can not replace with conventional pin and become the pilot pin of shape, nor can be on demand with two connector muff couplings end face together grinding and buffing again.Because these shortcomings fail the idea that pilot pin for good and all is fixed in the fiber optic connector sleeve generally to promote in business management.
The purpose of this invention is to provide a kind of joints of optical fibre that do not have above-mentioned each problem.
Another object of the present invention provides a kind of joints of optical fibre that the pilot pin that diameter reduced is installed, and this joints of optical fibre have guaranteed high dimensional accuracy, and can produce in enormous quantities.
Another purpose of the present invention provides a kind of the permission because limited machining accuracy and certain size deviation that work in-process produces and make the wire rod can be by the pinpoint joints of optical fibre in space that reduced.
A further object of the present invention provides a kind of any pilot pin is not permanently affixed in the optical conenctor sleeve and can also make the operator differentiate accurately behind this a connector of dismounting pilot pin is stayed the joints of optical fibre in which connector sleeve.
Above-mentioned purpose of the present invention can reach by the following joints of optical fibre are provided: the pilot pin of these joints of optical fibre is formed by a complex, and this complex is made of a core component and the skin with low Young modulus with high Young's modulus.
Above-mentioned purpose of the present invention also can reach by the following joints of optical fibre are provided: wherein, the optical fiber guiding parts is to constitute by a flat board being placed on the slotted substrate that its upper surface is formed with pilot pin groove and optic fibre channel guide; The pilot pin groove is exposed to the outside, and dull and stereotyped and described substrate engages the optic fibre channel guide cover plate, is placed on pilot pin in the pilot pin groove of described exposure and leans on one to have the anchor clamps that make two joints of optical fibre reach the elastic pressure of connection and fix.
Above-mentioned purpose of the present invention can realize by a kind of joints of optical fibre with wire rod positioning element are provided.Wherein, provide the otch of a basic and axially parallel in the wall portion of guide hole with near the place of guide hole, otch communicates with guide hole.
Above-mentioned purpose of the present invention also can reach by the following joints of optical fibre are provided: wherein, the thickness of the bonding material layer of the optic fibre channel guide of slotted substrate top is less than the thickness of same material layer between slotted substrate and cover plate, or do not have bonding material layer above optic fibre channel guide.
Above-mentioned purpose of the present invention can reach by following light dimension connector is provided: wherein, thereon the slotted substrate of surface with the optic fibre channel guide that forms by machining with to overlay the cover plate that forms the optical fiber guide hole on the slotted substrate and be joined together, its joint method has at least the part joint to reach by thermal treatment rather than by what cementing agent of use.
Above-mentioned purpose of the present invention can realize that this method comprises the following steps: that the cover plate thin slice is overlayed its upper surface to be formed with on the fluting thin slice of a plurality of optic fibre channel guides by machining by the method that the following processing joints of optical fibre are provided; At high temperature heat two thin slices and form single assembly so that they are bonded together; This assembly is cut into independent optical fiber coupling component, and each parts are made up of slotted substrate sheet and the cover plate sheet that engages together.
Above-mentioned purpose of the present invention can reach by the following joints of optical fibre are provided, wherein, cover plate and its upper surface are combined by the slotted substrate that machining is formed with optic fibre channel guide, form the optical fiber guide hole, remove cover plate on that part of optic fibre channel guide in back forming a breach, that part of optic fibre channel guide in back is exposed to the outside.
Above-mentioned purpose of the present invention can realize that wherein, each pin-guide hole part from fiber optic connector sleeve comes out by the following joints of optical fibre are provided, and when two joints of optical fibre were bound up, pilot pin still was exposed in that zone of pin-guide hole.
Fig. 1 is the rough schematic of a representative instance of the expression prior art joints of optical fibre;
Fig. 2 has illustrated the problem that influences the joints of optical fibre shown in Figure 1;
Fig. 3 is the skeleton view of expression as the elastomeric slit pipe of pilot pin;
Fig. 4 is the rough schematic of the expression prior art joints of optical fibre;
Fig. 5 is the sectional view of another embodiment of the expression prior art joints of optical fibre;
Fig. 6 has schematically illustrated the problem relevant with the prior art joints of optical fibre;
Fig. 7 and Fig. 8 have illustrated how optical fiber locatees in these joints of optical fibre;
Fig. 9 A and 9B illustrate an example of the prior art joints of optical fibre;
Figure 10 A to Figure 10 C has shown an example of the prior art joints of optical fibre, and wherein, Figure 10 A is the top view before two connectors are attached to together, and Figure 10 B is that Figure 10 A is at arrow X 1-X 2Sectional view on the direction, Figure 10 C are that connector is in the top view under the connection state;
Figure 11 A uses the synoptic diagram of the optical conenctor of an optical conenctor plug and a socket for connecting purpose;
Figure 11 B is the synoptic diagram that can be used to fix the anchor clamps of two connector sleeves;
Figure 12 A is the longitudinal sectional view of the used pilot pin of an optical conenctor of the present invention;
Figure 12 B is the front elevation of pilot pin right-hand member shown in Figure 12 A;
Figure 12 C is the skeleton view of the optical conenctor sleeve in the optical conenctor of the present invention;
Figure 13 A has illustrated with 13B how two kinds of different distortion that cause solve in the low Young modulus parts of pilot pin;
Figure 14 A and 14B are the longitudinal diagram of pilot pin of the present invention;
Figure 15 A and 15B are the cross-sectional views of pilot pin of the present invention;
Figure 16 is the skeleton view of a kind of joints of optical fibre of the present invention;
Figure 17 is the front elevation of a kind of optical fiber guiding parts in the optical conenctor of the present invention;
Figure 18 is the longitudinal diagram of two optical conenctors shown in Figure 16;
Figure 19 is the sectional view of a kind of optical conenctor of the present invention;
Figure 20 A, 20B and Figure 21 are the sectional views of wire rod positioning element of the present invention;
Figure 22 is the skeleton view of wire rod positioning element of the present invention;
Figure 23 has illustrated the multifilament optical conenctor of wire rod positioning element application example of the present invention;
Figure 24 A to 24E represents to be used for various kerf of the present invention;
Figure 25 is the cross-sectional view of wire rod positioning element of the present invention;
Figure 26 and 27 is cross-sectional views of optic fibre channel guide near zone in the optical fiber coupling component of the present invention;
Figure 28 is the cross-sectional view of a kind of optical conenctor of the present invention;
Figure 29 A is the skeleton view of a kind of optical fiber coupling component of the present invention;
Figure 29 B is the cross-sectional view of optical fiber coupling component shown in Figure 29 A;
Figure 29 C is the top view of the optical fiber coupling component shown in Figure 29 A;
Figure 29 D is the side view of the optical fiber coupling component shown in Figure 29 A;
Figure 30 A to 30C shows the step of the several successive of making the joints of optical fibre that use the optical fiber coupling component shown in Figure 29 A and the 29B;
Figure 31 A to 31F shows the step of the several successive of making optical fiber coupling component of the present invention;
Figure 32 A to 32C illustrates the technology that realizes that direct silicon-silicon engages; And
Figure 33 is the skeleton view of mechanical engagement device of the present invention;
Figure 34 is the skeleton view that an optical fiber of the present invention links parts;
Figure 35 A and 35B show the optical fiber coupling component that is installed in the plastic casing;
Figure 36 is two top views that are contained in the optical fiber coupling component in the plastic casing;
It is how to prevent that cementing agent from flowing to the parts outside and coming that Figure 37 illustrates optical fiber coupling component of the present invention;
Figure 38 A is the skeleton view of the optical conenctor that is cut off of part optical conenctor sleeve of the present invention;
Figure 38 B is that connector shown in Figure 38 A is along arrow X 1-X 1The sectional view of direction;
Figure 38 C is the top view of Figure 38 A connector;
Figure 39 is used for connecting the side view of the pilot pin example of optical conenctor for the present invention;
Figure 40 A and 40B show the optical conenctor sleeve of having inserted pilot pin in it, and this sleeve is equipped with clamp system, and wherein, Figure 40 A is a longitudinal diagram, and Figure 40 B is a top view;
Figure 41 is the longitudinal diagram of two optical conenctor sleeves being bound up end-to-end by pilot pin;
Figure 42 A to 42C represents other embodiment of pin-guide hole exposure place;
Figure 43 is the sectional view of the optical conenctor sleeve of the present invention's one specific embodiment;
Figure 44 A to 44C is the sectional view of the optical conenctor sleeve of other specific embodiment of the present invention;
Figure 45 and 46 is sectional views of the optical conenctor of other example of expression the present invention.
Shown in Figure 12 A and 12B, pilot pin used in the present invention is made up of chipware 11 and outer 12, and chipware 11 is central components, and it is by making such as the such material of the metal with high Young's modulus; Outer 12 wrap in around the said chipware 11, and it is made by the material with low Young modulus (being typically plastics or synthetic rubber), and the center section of pilot pin has a small diameter portion 13, and the two ends of pilot pin are splayed shown in 14 such.
Make the method for optical conenctor sleeve 2: as described below can be with the plate that has the V-type groove 23 such as so hard, the crisp made of silicon or pottery, the surface has the V-type guide groove that is used for holding pilot pin and optical fiber thereon, topped on plate 23 with dull and stereotyped 24, the centre accompanies the skim cementing agent, forms triangle pin-guide hole 21 and optical fiber guide hole 22 thus.Each optical fiber (B) stationary positioned in the ribbon fiber (A) is in hole 22.
For the high Young's modulus member 11 of making pilot pin 1 and low Young modulus member 12 employed terms " Young modulus " should be to get its relative meaning, and when pilot pin 1 was inserted dowel hole 21, being easy to of the low Young modulus member 12 of part was out of shape in such a way: pilot pin 1 is fixedly contacted with pin-guide hole 21 and only leave a little space or do not interspace between pin and hole.
Small diameter portion 13 is made in the center section of pilot pin 1, so that the axial deformation that the skin of being made by low Young modulus material 12 is produced is absorbed by this small diameter portion 13.Except the shape shown in Figure 12 A, the protective seam 12 that also can remove the low Young modulus of pilot pin center section forms small diameter portion 13, shown in Figure 14 A.Perhaps make a plurality of small diameter portion 13 as shown in Figure 14B.
Can be easily and the distortion of uniformity for the skin 12 that makes low Young modulus, it is effective that leg-of-mutton pin-guide hole 21 is provided in optical conenctor sleeve 2.Like this, pilot pin 1 can contact so that three points are fixing as shown in FIG. 13A, and the space 3 that the distortion that pilot pin produced can be formed by an Atria place, summit naturally absorb.Should be noted that, if pilot pin cooperates with circular port as in the prior art, the space quantity that can absorb distortion so seldom, with in distortion pilot pin 1 patchhole the time, running into very big difficulty.
Much less, the skin 12 of low Young modulus is made for a kind of like this material, this material guarantees to have long-time high stability (being the little deformation of creep), can carry out machining so that the high precision size to be provided, chipware 11 to high Young's modulus produces good bonding, and shows high temperature resistance, moisture-resistant and chemically resistant material characteristic.Be more preferably, outer 12 usefulness show also that except above-mentioned characteristic the material of favorable elasticity makes, and in general, it is better to have a very big flexible synthetic rubber.But, estimate that the maximum of the distortion of generation is 2-3 μ m in the present invention, in this sense, this is the phenomenon that occurs in " little " deformation range, therefore, can replace synthetic rubber with plastic material effectively, the Young modulus of this plastic material is lower than the metal with high Young's modulus, and as can clearly be seen that from He Zhi (Hertz) contact theory, this plastic material is than metal easy deformation more.
Certainly, the chipware of high Young's modulus can be with making such as pottery or so hard, the crisp material of glass, makes with the metal material of precision that its outside dimension is provided but be more preferably with being easy to carry out machining.Can not be in the mood for processing with metal and other object with material of high Young's modulus, so that the high precision of outside dimension up to ± 1～2 μ m to be provided on commercial size, can be the suitable paint-on technique of constant with controlling dilatory speed, form the thin layer that hangs down Young modulus such as dip-coating, vacuum evaporation, sputter or spin coating, this can suitably select according to institute's materials used and the thicknesses of layers that will obtain.From reaching large-duty quick-setting viewpoint, the resin that can select to solidify with the UV radiation irradiation is as the material that hangs down Young modulus.
High Young's modulus member with pilot pin 1 is in the present invention formed core segment 11, and it provides the necessary intensity and the basic size of pilot pin.The skin 12 of low Young modulus is made of a topped thin layer, its part is easy to distortion when pilot pin inserts pin-guide hole 21, thereby guarantee that pilot pin is adjacent to hole wall, to realize the location of pilot pin uniformity, main progress of the present invention be eliminated fully pin-guide hole and and the pilot pin of its connection between the space, or make this space be reduced to the value of the sub-micron order of magnitude, and with requiring pilot pin 1 to reuse more than 10 times, but, for the maximal accuracy that guarantees to connect, can connect/take apart circulation at each and remove later pilot pin.
The distortion that low Young modulus member produces can be absorbed in two places: at first, pin-guide hole 21 is designed to have leg-of-mutton mode cross section, and as shown in FIG. 13A, the distortion that the pin circumferencial direction produces is absorbed by three summits 3 of triangular cross section; Secondly, the distortion 6 that pilot pin 1 produces is vertically absorbed by small diameter portion 13, shown in Figure 13 B, in the later case particularly importantly, small diameter portion 13 should be positioned at end face 5 places that any one optical conenctor and other connector connect mutually, and this is can not set up at they end faces separately and contact with each other completely because if axial deformation acts on this end face then two connectors.
In the superincumbent explanation, the chipware 11 of high Young's modulus is expressed as solid component, but it also can be the Cylinder shape constructional element form with hollow parts 15, shown in Figure 15 A.In addition, in order to improve the adhesive property with low Young modulus member 12, chipware 11 can have the middle layer 16 that connects media such as one deck, constitutes with the structure more than one deck, and this middle layer places between two members, shown in Figure 15 B.
Outer 12 material is particularly made better with zirconium dioxide with pottery.The Young modulus of zirconium dioxide material is lower than the metal material, has hard, smooth property, so that pilot pin is accurately worked.
Example
Narration is applied to notion of the present invention to have the optical conenctor of the array of 6 coated optical fiber below.
The method of having made pilot pin 1 as described below is as follows: stainless steel bar of machining, made external diameter and be-0.001mm) chipware 11 for the 0.297mm+ tolerance, on the chipware coated have the plastic sheeting of the low Young modulus material of about 2.5 μ m thickness, (tolerance is-0.001mm) skin 12 to have the 0.302mm external diameter to provide.The center section of each pilot pin has 3 small diameter portion 13, and the middle part of each small diameter portion 13 has the external diameter of about 0.250mm like this.The about 7mm of the length overall of each pilot pin of Zhi Zaoing like this, the length of each small diameter portion 13 is approximately 0.8mm.The two ends of each pilot pin 1 splay shown in 14 like that, so that the top end diameter that is not more than 0.2mm to be provided.Make the optical conenctor sleeve 2 that is suitable for pilot pin with silicon, it has triangle pin-guide hole 21, shown in Figure 12 C.Critically pin-guide hole is carried out machining, make inscribed circle of a triangle have 0.300mm diameter (tolerance for-0.002mm).Because this size relationship, (tolerance for its diameter, stands the distortion of minimum 1 μ m and maximum 4 μ m for the low Young modulus skin 12 of-0.001mm) pilot pin to have the 0.302mm external diameter.
Pilot pin 1 that use is narrated above and optical conenctor sleeve 2 are made and are used for connecting the optical conenctor of 6 single-mode fibers in the array, and identify its characteristic.
50 samples to pilot pin are measured, the variation of the connection loss that produces owing to 25 connection/dismounting cycles (N=2.5) for average loss 0.23dB within ± 0.05dB.These data show that the connection loss that optical conenctor of the present invention produces is a uniformity, and it is irrelevant with the variation of pilot pin, in other words, because the connection that cause in the space between pilot pin and the pin-guide hole/dismounting changes and reduced significantly, and the connection loss of optical conenctor of the present invention generation depends primarily on the initial excentricity of optical fiber.
The thermal cycling test (30 ℃～+ 70 ℃) that optical conenctor of the present invention was stood 10 days, 10 days heat resistance test (relative humidity 90%, 60 ℃ of temperature), identified its reliability, in each test, connection loss that optical conenctor causes changes in+0.03dB scope, and this shows that its guarantees the ability that optical fiber uniformity connects.
The example that provides above is one embodiment of the present of invention, and the thickness of low Young modulus layer can reduce (＜2.5 μ m) or increase (＞2.5 μ m), and but, if the thickness of external coating is too thick, then controlling dimension will be met difficulty.Therefore, it is better that outer field maximum ga(u)ge is not more than 50 μ m, supposes to take place the distortion of 5 μ m, about 10 times of distortion that Here it is.If require the connection of superhigh precision, so for the distortion that is no more than 0.5 μ m, the preferred design external coating has the thickness that is not more than 5 μ m.
As mentioned above, optical conenctor of the present invention uses pilot pin, each pilot pin is formed by the chipware of making such as the such high Young's modulus material of metal with the external coating that low Young modulus material film is made, when these pilot pins are inserted the pin-guide hole that is associated, make low Young modulus member produce little distortion, producing enough pressure is fixed in the pin-guide hole pilot pin, the result, eliminated fully otherwise can pilot pin and with pin-guide hole that this pilot pin cooperates between the space that produces, perhaps make it be reduced to very little value, thereby the low-loss that realizes the uniformity of optical fiber connect.
If make pin-guide hole become the triangular-section, the place of the circumferential deformation that absorbs the pilot pin generation just is provided, pilot pin just can contact with pin-guide hole on three points tightly, guarantees the reliable connection with pin-guide hole.
In optical conenctor of the present invention, a small diameter portion can be provided at the center section of each pilot pin, this small diameter portion not only provides the place of the axial deformation that absorbs the pilot pin generation, and guarantee that two optical conenctors contact with each other completely in their end face realization, between high Young's modulus member and low Young modulus member, produce the adhesive property that improves simultaneously, can use the step portion that forms by small diameter portion, use the clamp pilot pin, can be at an easy rate when this makes and need change pilot pin pull down or connect pilot pin from the optical conenctor sleeve.
In the optical conenctor shown in Figure 12 C, the upper surface that has the plate 23 of V-shaped groove has the V-shaped groove of pilot pin and the V-arrangement guide groove of optical fiber, and it covers with dull and stereotyped 24, to form leg-of-mutton pin-guide hole 21 and optical fiber guide hole 22.But, can use the plate that has groove 30 24 above the V-shaped groove that when overlay 23, is positioned at register pin ', make pin-guide hole 21 ' inside center 40 and the inside center 41 of optical fiber guide hole 22 arrange in a line, as shown in figure 43, further can use as Figure 44 A to the quarter shown in the 44C plate 23 of groove ' and plate 24 ' constitute optical conenctor sleeve, wherein pilot pin contacts with pin-guide hole at least three points and is fixed in the pin-guide hole.
In addition, in order to absorb the pin-guide hole diameter variation, the Young modulus of cover plate materials can be different from the Young modulus of substrate.
Figure 16 is the skeleton view of the optical conenctor of another embodiment of the present invention.Figure 17 is the front view of the optical fiber guiding element of optical conenctor of the present invention, and Figure 18 is the longitudinal profile of two connective elements of optical conenctor shown in Figure 16.
The structure of the optical fiber guiding element 101 of optical conenctor of the present invention is shown in Figure 17, the upper surface of having carved the substrate 111 of groove has optic fibre channel guide 113 and the pilot pin groove 114 that is used for fixing fiber orientation, with dull and stereotyped 112 overlays 111, place the centre to come adhesive board 112 and the said substrate 111 of having carved groove with skim cementing agent 115, and dull and stereotyped 112 cover optic fibre channel guide 113 and pilot pin groove 114 are exposed.
Shown in Figure 16 and 18, the anchor clamps 103 of the flexible force of compression of apparatus are fixed from the rear end of optical fiber guiding element 101, simultaneously the front end of pilot pin 102 from guiding element 101 inserted, two optical conenctors are bound up, pilot pin 102 is fixed in the pilot pin groove 114 by the elastic compression power of anchor clamps 103 as a result.
Each pilot pin 102 has at least two small diameter portion 121, that part in the bottom side of small diameter portion 121 residing cutting substrates 111 has clip groove 116, the direction of this groove is axial perpendicular to each pilot pin 102, the part of exerting pressure of anchor clamps 103 is used for compressing and fixing pilot pin 102, make its location, the part of exerting pressure is positioned at the small diameter portion of pilot pin 102, the groove 116 on another bottom side that partly is arranged in cutting substrate 111 of exerting pressure.
The width of anchor clamps 103 is done to such an extent that equal or is slightly larger than the width of the cutting substrate 111 of optical fiber guiding element 101, and the decision of anchor clamps 103 height makes the height of its full-size greater than optical fiber guiding element 101.
Figure 19 is the cross-sectional view of the optical conenctor of another embodiment of the present invention.In this embodiment, anchor clamps 103 are divided into two parts of separating, and their structure is to connect from the beside of optical fiber guiding element 101 or to pull down.In this case, the trend of the clip groove of making on cutting substrate 111 117,117 is parallel to the axial of pilot pin 102, and anchor clamps 103 have an extension, this extension contacts with each small diameter portion 121 of pilot pin, is positioned the small diameter portion that is associated of pilot pin thus.
In optical conenctor of the present invention, the pilot pin groove 114 of optical fiber guiding element 1 is not covered by dull and stereotyped 112 and directly is exposed.Therefore, insert in these grooves 114 pilot pin 102 by with each groove 114 only 2 contact supported, and the upside of each pilot pin 102 contacts with anchor clamps 103, decompression is to the bottom of groove 114, thereby pilot pin can be fixed in the groove, in this connection, should emphasize, because anchor clamps 103 can elastic deformation, so any slight variation of pilot pin diameter can both be absorbed by the elastic deformation of anchor clamps 103 effectively, in fact, the pilot pin diameter departs from predetermined value (for example 0.7mm), and approximately the variation of 0.1mm can be by anchor clamps absorption fully without difficulty, even the pilot pin of diameter 1.0mm also can insert in the pilot pin groove effectively, as further advantage, even the diameter of two used pilot pins is slightly different, two optical conenctors also can be bound up without difficulty.
In optical conenctor of the present invention, pilot pin 102 is pressed to the bottom of pilot pin groove 114 by anchor clamps 103, this has such advantage: if external force is added on the pilot pin 102, then stress can not pass on the substrate 111 of having carved groove, but rely on the distortion of anchor clamps 103 and be absorbed, in order to obtain this result, anchor clamps 103 must be flexibly to be out of shape, so that make to the substrate 111 of having carved groove before substrate portion ground damages acting on stress on the pilot pin 102, just it can be absorbed, the elastic compression power of anchor clamps 103 can be easy to regulate by the material and the thickness that change anchor clamps, and be easy to set a value, it can hold the substrate 111 of having carved groove and damage the stress that can allow before.
Another characteristics of optical conenctor of the present invention are, are registration by the small diameter portion of each pilot pin 102 of anchor clamps 103 location with the clip groove 116 of having carved the substrate 111 of groove.These characteristics reduce effectively and may and carve the slip that takes place between the substrate 111 of groove at pilot pin 102, and since this antiskid action with having the acting force that the optical conenctor that connects is drawn back in resistance, thereby increase the reliability of two connectors connections.The power that this resistance connector is separated depends on pilot pin 102 and has carved friction force between the substrate 111 of groove, can be by increasing the force of compression of anchor clamps 103, perhaps by making the shaggy way of pilot pin produce the friction force of enhancing at an easy rate, experiment has shown that optical conenctor constructed in accordance can withstand the pulling force up to 2.8 kilograms, and does not produce slip at pilot pin between the substrate of groove with having carved.In theory, they can be modified to such an extent that withstand pulling force up to the 4-5 kilogram; And for practical purpose, the intensity that then stands about 2 kilograms of pulling force just is enough to guarantee to make two optical conenctors of connection to work reliably.
In preferred embodiment of the present invention, anchor clamps 103 have such size: its width is equal to, or greater than the width of the substrate 111 of having carved groove, and its maximum height is greater than the height of optical fiber guiding element 101.Anchor clamps with such size are used for protecting optical fiber guiding element 101 not to be subjected to any external force; for example act on the stamping press on the optical conenctor; be to use when making particularly such as so hard, the crisp material of silicon at the substrate 111 of having carved groove and dull and stereotyped 112; anchor clamps 103 just can be used as an effective protector, the fracture of silicon materials when preventing to apply impulsive force.
As mentioned above, employed anchor clamps have been undertaken diversified effect in the optical conenctor of the present invention, and this optical conenctor adopts the optical fiber guiding element and the pilot pin of a fixed structure, so that these anchor clamps produce these effects with effective and efficient manner.
Example:
Make a kind of optical conenctor of structure as shown in figure 16 that has, the quarter of this connector groove substrate and dull and stereotyped make with silicon, utilize etching operation on the upper surface of substrate, to make optic fibre channel guide and pilot pin groove, in the optical conenctor of Zhi Zuoing, 12 optic fibre channel guides in the 0.25mm spacing, have been made in this example.The used pilot pin of this optical conenctor has the diameter of 0.7mm, and each all has the small diameter portion of diameter 0.4mm.As shown in figure 16, having designed anchor clamps can connect or pull down it from the rear end of optical fiber guiding element, and pilot pin can insert from the front end of guiding element, made clip groove in the substrate bottom side of having carved groove, its trend is axial perpendicular to each pilot pin, the part of exerting pressure of anchor clamps is positioned at small diameter portion two places of clip groove and pilot pin, thereby they can compress and fixing pilot pin, make its location.
Optical conenctor of the present invention recited above has following advantage:
(1) anchor clamps that can elastic deformation are positioned on the pilot pin groove, so the stress that acts on the substrate of having carved groove when pilot pin inserts the pilot pin groove is absorbed by these anchor clamps, have carved the substrate of groove with protection.
(2) because anchor clamps flexibly are out of shape when pilot pin insertion pilot pin groove, thus any variation of pilot pin diameter can both be absorbed by anchor clamps effectively, thereby two optical conenctors can not be bound up not difficultly.In addition, the diameter that will insert two pilot pins of the pilot pin groove that is arranged in two sides of optical fiber guiding element needn't equate mutually, and this has eliminated when using with optical conenctor of the present invention control to the strictness of pilot pin diameter.
(3) anchor clamps are to fix the location with being made in the groove on the bottom side of the substrate of having carved groove and the small diameter portion of each pilot pin, this reduces the slip that may occur between pilot pin and the pilot pin groove effectively, and have the acting force that the optical conenctor that connects is drawn back in resistance, thereby guaranteed two reliabilities that connector connects.
(4) anchor clamps are designed to have the size greater than the optical fiber guiding element, so it can protect the optical fiber guiding element to be without prejudice.
(5) each pilot pin that uses in optical conenctor of the present invention all has small diameter portion, and this small diameter portion makes pilot pin be easy to insert the pilot pin groove as the draw-in groove of pilot pin, also therefrom pulls out easily again.
Figure 20 A is the cross-sectional view that the wire rod positioning element of a specific embodiment of the present invention has been seen from the front.This wire rod positioning element is by the substrate 501 of having carved V-shaped groove and compress dull and stereotyped 502 and form, upper surface at substrate 501 is made V-shaped groove, flat board 502 and substrate 501 bondings, to form guide hole 503 in component internal, wire rod (A) inserts by this guide hole, each guide hole 503 has 4 breaches 504, their trend is arranged essentially parallel to the axle of guide hole 503, and communicate with these guide holes 503, the wire rod (A) that inserts guide hole 503 is at three points (a), (b), (c) contact with the guide hole wall, at lower two points (b) and (c), wire rod (A) also contacts with the part of two beam bars 505 that limited by 4 breaches 504.Therefore, even the external diameter of wire rod (A) is slightly larger than the inscribe diameter of a circle of guide hole 503, the beam bar 505 that contacts with wire rod will be out of shape, shown in Figure 20 B, thereby make wire rod insert guide hole 503 smoothly, in other words, breach 504 makes the wall of guide hole 503 can partly stand elastic deformation, and absorb any slight variation of wire rod (A) diameter, thereby guarantee the three-point support of wire rod and between wire rod and guide hole 503, do not stay the space.
If desired, can round the bottom of each breach 504, with prevent this zone in rupture, according to the present invention, near breach 504 or 503 li of guide holes, perhaps this hole, and, the whole intensity of positioning element is degenerated owing to there is such breach.The beam bar 505 that particularly stands big distortion may be subjected to acting near the influence of the bending stress beam bar 505 base portions or breach 504 bottoms, if little initial collapse has taken place adding man-hour in this zone, it will be further developed into big fracture so, may finally damage beam bar 505, therefore, the bottom that rounds each breach 504 can prevent initial collapse to improve the whole intensity of positioning element.
Figure 21 is the cross-sectional view of having seen from the front according to the wire rod positioning element of another specific embodiment of the present invention.As shown in the figure, some breach 504 usefulness materials 507 fill up, the elasticity of material 507 is different from the elasticity of the material of making positioning element, this embodiment is effective for the elastic strength that changes beam bar 505, if act on the wire rod (A) that inserts guide hole 503 such as the such external force of bending stress, stress will pass on the wall of guide hole 503 so, but a part passes the stress of coming to be absorbed by the elastic deformation of beam bar 505, in addition, the intensity of beam bar 505 can be regulated by the material 507 that fills up breach 504.Therefore, according to embodiment shown in Figure 21, positioning element can stand external force and not rupture, but also can regulate to such an extent that can withstand the distortion of appropriate amount.
Figure 22 is the skeleton view of wire rod positioning element according to still another embodiment of the invention, except filling up some breaches with certain material 507 as embodiment shown in Figure 21, the intensity of beam bar 505 can also be by providing other breach 508 to regulate on the direction of the axle that is substantially perpendicular to guide hole 503, as shown in figure 22, if make the breach 508 of one or more, intensity at the beam bar 505 between the adjacent breach 508 is just decided to the distance another breach 508 by a breach 508 so, therefore, for the intensity of regulating beam bar 505 expediently, breach 508 also is effective.
Example:
Figure 23 represents multiple joints of optical fibre of using the example of wire rod positioning element of the present invention.
Two critical piece-Ke of the multiple joints of optical fibre substrate 511 of groove and pressure strip 512-each all make with silicon, because silicon is hard, crisp characteristic, they are not yielding under external force, on connector, make two pin-guide holes 513 and 5 optical fiber guide holes 514, pilot pin and optical fiber insert respectively in these guide holes 513 and 514, thereby they can stationary positioned in these holes, each guide hole 513 has 3 breaches 515, to limit two beam bars 517, each guide hole 514 also has 3 breaches 516, to limit two beam bars 518, pilot pin 519 has external diameter 0.35mm, optical fiber 520 has external diameter 0.125mm, and guide hole 513 and 514 designs like this, and the internal diameter that makes them is than the little very little amount of size that pilot pin 519 and optical fiber 520 are freely inserted respectively.The actual pilot pin that uses and the external diameter of optical fiber have tolerance, and these tolerances are ± and the order of magnitude of 2 μ m, this is easy to be absorbed by the elastic deformation of part guide hole wall (being beam bar 517 and 518).Therefore, optical conenctor shown in Figure 23 has such advantage: all pilot pins and optical fiber can be bearing in reliably on 3 points and not stay the space to guide hole.
In above-mentioned example, with the silicon of super resistance to deformation material as the wire rod positioning element, if do not have breach as guide hole in the prior art, then can not make external diameter insert guide hole fully greater than the wire rod (little) of guide hole internal diameter no matter how many this difference is, yet, wire rod positioning element of the present invention absorbs the diameter difference of the 2-3 μ m order of magnitude and has no problem, and because the beam bar is arranged, even the hard material resemble silicon also can stand a certain amount of distortion, thereby the space between guide hole and the wire rod is reduced to minimum possible level, do not have breach with having guide hole and produce 0.38dB on average to connect the multiple joints of optical fibre of the prior art of loss (to single-mode fiber) relatively, the multiple joints of optical fibre of the present invention reach 0.18dB average connection loss this just prove that the present invention can finish high-precision location.
Should be noted that, the position of the breach that provides in the wire rod positioning element of the present invention is defined on the part guide hole wall anything but, breach can be near guide hole any zone, as long as this breach limits the beam bar that can stand a small amount of distortion, other parameter of breach, for example their quantity, width and the degree of depth also can be set at any required value.
Figure 24 A represents to be used for various breach structure of the present invention to 24E.In Figure 24 A, two breaches 504 leave guide hole 503 1 segment distances.In Figure 24 B, single breach 504 leaves asymmetric guide hole 503 1 segment distances, and Figure 24 C represents to provide the situation of the breach 504 with different depth and width.In the situation shown in Figure 24 D, breach 504 is not only on the wall of guide hole 503, and covering on the pressure strip on the said guide hole 502, so that absorb the diameter variation that to insert the wire rod (A) in the guide hole more easily, in the situation shown in Figure 24 E, with resin 509(epoxy resin for example) replace silicon, and make guide hole 503 and breach 504 with molding methods.
Figure 25 represents to use the cross-sectional view that another example of wire rod positioning element of the present invention has been seen from the front.In this example, positioning element is used for the optical conenctor sleeve 524 of monofiber connector, two optical conenctor sleeves 524 relative to each other are positioned on the substrate 521 of having carved groove and with anchor clamps 526 and fix, make V-shaped groove 522 and breach 523 on the substrate 521, in Figure 25, the optical fiber of numeral 525 expression stationary positioned in each optical conenctor sleeve 524.
In addition, the cross-sectional view of Figure 45 and 46 expressions other specific embodiment of the present invention.
In Figure 45, with pressure strip 502 ' supporting wire rod 519, do not stay the space, pressure strip 502 ' have groove 530 and the notch portion on groove 530 531, wire rod 519 insertion grooves 503 to guide hole 503.Groove 530 and notch portion 531 are along the longitudinal extension of the guide hole 503 on the substrate 511 of having carved groove.
Outshot 532 will produce distortion, so that wire rod 519 inserts guide hole 503 smoothly and be supported, and stay the space for guide hole 503.
In Figure 46, pressure strip 502 ' on the groove 530 made have resilient material 533, it makes wire rod 519 stationary positioned in guide hole 503, in the above-described embodiments, the inwall of guide hole is at least with 3 somes supporting resilient materials.
In the various embodiments described above, the material of pilot pin can be made of pottery, especially can constitute with zirconium, and zirconium is harder than aluminium, and its crystal external diameter is not more than 0.5 μ m, and its surface is just more level and smooth like this.
In addition, according to the present invention, have at least one can be made by silicon, pottery or plastics in substrate and the pressing plate, the former with the latter is different on material.
Wire rod positioning element of the present invention has following advantage.
(1),,, can remove the stress that acts on the wire rod that inserts this guide hole because the guide hole wall produces slight deformation so also can insert this guide hole even be slightly larger than the wire rod of guide hole internal diameter because the guide hole wall can be out of shape.
(2) if positioning element is to use such as so hard, the crisp material of silicon to make, so when wire rod inserts guide hole, said positioning element very easily produces slight crack near receiving the edge that inserts wire rod at this guide hole, this problem has reduced in positioning element of the present invention greatly, is out of shape according to the insertion of wire rod because the guide hole wall energy is enough.
(3) can easily regulate the intensity that makes the guide hole wall energy stand to be out of shape and do not rupture with various methods, for example use the material different to fill up breach on the guide hole wall with the elasticity of the material of making positioning element, perhaps change the degree of depth and the width of breach, other breach perhaps is provided on the direction that is basically perpendicular to the guide hole axle.
(4) if the breach bottom is round, they are enough to anti-fracture so, in case the damage of fastening position parts.
Figure 26 represents in the optical fiber coupling component of a specific embodiment of the present invention, near the cross-sectional view in a zone the optic fibre channel guide.As shown in the figure, with method brushing one deck bonding dull and stereotyped 201 chemistry or physics and the binding material 203 of having carved the substrate 202 of groove, make the thickness t that is positioned at the binding material on the optic fibre channel guide 204 2Less than other local thickness t 1, a method that obtains this result is as follows: use the sort of resist used in the lithography step in the integrated circuit production as binding material, allow the stripper solution of dissolving resist flow into groove 204, so that erode the resist layer on the groove 204.
In addition, in the embodiment of Figure 26, preferably use the binding material 203 that contains resilient material as binding material, so that prevent the variation of pilot pin position.
Figure 27 is as Figure 26, in the optical fiber coupling component of expression another specific embodiment of the present invention, near the cross-sectional view in a zone the optic fibre channel guide, in this embodiment, that removes tack coat 203 is not used for adhesive board 201 and carved the redundance of the substrate 202 of groove, and its degree of removing is not damage two cohesive strengths between the plate.
Structure shown in Figure 26 has been avoided the problem that is associated with prior art effectively, promptly because binding material 203 partly puts in groove 204, make optical fiber can not insert the problem of optic fibre channel guide 204 smoothly with predetermined outer diameter, the thickness of the tack coat on the regulating tank 204 is the height in space in the control flume 204 within the specific limits, this has simplified the height optimization that makes space in the groove 204 effectively, to obtain to be suitable for most the value of the optical fiber external diameter in will insertion groove 204.
In structure shown in Figure 27, on optic fibre channel guide, there is not cementing agent, this is effective for preventing that dust granule and other exterior materials are deposited on this zone, the result reduces that the existence owing to dust forms projection or concave point on the wall of groove 204, and optical fiber is smoothly in the insertion groove and do not stagnate attached in groove.
Usually, the shape of cross section of measuring optical fiber guide hole is parallel to the light of the longitudinal propagation of groove by emission, and utilizes the projection of endpiece to determine the position in hole, propagates light produces the appearance profile of groove, if have dust granule on the cell wall part, directly projection goes out the dust particle shape, produces coarse groove appearance profile, yet, in structure shown in Figure 27, the dust granule that is deposited in the groove minimizes, can be with the appearance profile of very high precision measure groove.
If desired, as Figure 27 206 shown in be positioned at the tack coat 203 that plate 201 is bonded to the zone on the substrate 202 of having carved groove and can remove, it removes degree is not damage two cohesive strengths between the plate, in this embodiment, if optical fiber insertion groove 204 is also then fixed with cementing agent, cementing agent also will fill up and remove the space that stays after the tack coat 203 so, thereby increase plate 201 is bonded to the area on the substrate 202 of having carved groove, and further strengthen the cohesive strength between these parts, above said " cementing agent " be used for fixed fiber in groove 204, it has bigger cohesive strength than " binding material " that be used for cementing agent 201 and carved the substrate 202 of groove.
Example:
Figure 28 is the cross-sectional view of optical conenctor of using an example of optical fiber coupling component of the present invention.
Bonding material layer 203 in this connector has the thickness of about 1 μ m, in order to form thin like this tack coat, binding material needs quite low glutinousness, in this example, tack coat 203 is to form with the sort of resist used in the lithography step in the integrated circuit production, plate 201 is silicon plates of thick 0.5mm, and the substrate of having carved groove also is the silicon plate, thick 1.5mm.
The pilot pin groove 205 that the connector of making in this example has optic fibre channel guide 204 that optical fiber will insert and pilot pin to insert, tack coat 203 is all removed in the zone from these grooves 204 and 205.As already mentioned, tack coat 203 usefulness resists form, so after liquid resist stripper is poured into groove 204 and 205, about 130 ℃ to assembly heating 2-3 minute, remove resist layer, only had the thick resist layer of about 1 μ m in very short time, to dissolve at an easy rate.
Resist did not resemble originally has very strong cementation power the cementing agent, its cohesive strength is less than common cementing agent, but, by fill up space between optical fiber and the optic fibre channel guide 204 with more effective cementing agent (cohesive strength is greater than resist) after optical fiber is inserted guide groove 204, then the plate 201 and the bonding of having carved between the substrate 202 of groove can guarantee actual use.
Advantage of the present invention:
As mentioned above, in optical fiber coupling component of the present invention, thin than on other zones of bonding material layer on the optic fibre channel guide zone, by regulating the thickness of this bonding material layer, under the situation in the gap that does not produce increase, even external diameter has the optical fiber of some variation also to insert and be fixed in the optic fibre channel guide.
Perhaps, remove bonding material layer fully at the optic fibre channel guide upper area, this is very effective to stoping dust granule and other foreign matters to deposit in the groove, because this has reduced on the guide groove wall owing to dust accumulates the convex-concave point that causes, optical fiber can be at an easy rate simultaneously in the insertion groove, utilize and launch the light of broadcasting, can very accurately determine the section configuration of each groove.
As needs, the interface of the substrate of plate and trough of belt can be provided with some open space, wherein there is not bonding material layer in the case, being connected and can being further strengthened by charging into a kind of material to described space between plate and trough of belt substrate, this material can produce the cohesive strength bigger than described binding material during with subsequently step insertion groove when optical fiber.
Figure 29 A to 29D has shown optical fiber coupling component according to still another embodiment of the invention.
As shown in Figure 29 A and 29B, one is placed on the trough of belt substrate 311 that has optic fibre channel guide 313 and be formed with pilot pin groove 314 on its top surface, cover plate 312 on its top is heated to high temperature under the situation of not using cementing agent, to produce holistic assembly, this assembly have the optical fiber guide hole 313 that portion within it forms ' and pin-guide hole 314 ', one is formed with otch 315 in the position of cover plate 312, so that the exposure of the part of optic fibre channel guide, thereby the optical fiber that is beneficial to subsequently inserts.
Trough of belt substrate 311 is connected with cover plate 312 in the following manner, making also, high dimensional accuracy ground polishes the surface that two parts will link, and temporary transient directly connect with bonding carrying out, subsequently assembly is heated to high-temperature, as 1000 ℃ or higher, impurity between two parts on the interface, water and other unnecessary materials evaporate, thereby make surface active to making them directly be bonded into the degree of a black box, as describing in this instructions back, can adopt two big plate unit, as wafer, wafer is the trough of belt wafer that has a plurality of optic fibre channel guides that form with machining, and another is the cover plate wafer, engage the slice, thin piece that also is cut into separation subsequently as these two wafers with said method, just can produce the coupling component of a plurality of shapes simultaneously.
Can by being inserted and be fixed in these guide holes, optical fiber produce simply owing on optical fiber coupling component 310 of the present invention, had 313 ' one optical connectors of optical fiber guide hole or mechanical engagement device, and need be with the combination operation of the difficulty in any prior art.
Figure 30 A to 30C has shown the making step of making the optical connector that adopts the optical fiber coupling component among Figure 29 A and the 29B, at first, shown in Figure 30 A, optical fiber (B) in the fiber array (A) from the otch 315 at the rear portion of the cover plate 312 of coupling component 310 be inserted into optical fiber guide hole 313 ', subsequently, shown in Figure 30 B, optical fiber (B) with cementing agent 316 be fixed in guide hole 313 ' in; Subsequently, shown in Figure 30 C, coupling component 310 is placed in the shell 317 and two this coupling component unit are placed in aspectant mode, wherein pilot pin (C) insert the pin-guide hole 314 of each coupling component ', so that two coupling components are connected to each other, use clip (D) that coupling component is fixed at last.
Figure 31 A to 31F has shown the production run of making optical fiber coupling component of the present invention with commercial size.
At first, provide that available silicon is made and the cover plate wafer 332 of a plurality of rectangular windows 334 is arranged, the trough of belt silicon chip 331(that also provides a plurality of optic fibre channel guides made from machining 333 is shown in Figure 31 B), the surface to be joined of two silicon chips is made of and is polished to very high dimensional accuracy, and with the bonding the method temporary joint.Subsequently, assembly is heated to as 1000 ℃ and higher temperature, with the activation composition surface two silicon chips closely is bonded together and forms a black box, and needn't be with what cementing agent (seeing Figure 31 C).
Engage about direct silicon-silicon theoretical, can be referring to Denki Joho Tsnshin Gakkai-shi(Japanese) volume, 70, No. 6,593-595 page or leaf, in June, 1987, wherein mention: " there is OH group on the Si oxide surface, and it is because of producing with the water reaction.The surface of silicon chip is in identical state, because it has produced simultaneously oxide film, if these OH groups are activated and enter direct contact, just produces hydrogen bond (Figure 32 A).Further heating again, OH group can experience dehydration and condense, and produces Si-O-Si key (Figure 32 B).If the oxide film during silicon-silicon engages is thin especially, oxygen will be diffused in the silico briquette, thereby form silicon-silicon bond (Figure 32 C).
As mentioned above, silicon has impurity and water in its surface adsorption under normal conditions, these adsorbates have stoped silicon-silicon to engage, if silicon is heated to a high temperature, as 1000 ℃ or higher, these adsorbates will be evaporated, thereby provide an activation silicon face, yet, for the large tracts of land composition surface, this method is inapplicable, because these evaporation adsorbates do not have passage usually, provide the additional groove of passage but in the present invention, the trough of belt wafer has a plurality of optic fibre channel guides that form on its surface and can have the evaporation that is used to that strides across it.In addition, the cover plate wafer has a plurality of rectangular windows, and these grooves and window will help effective joint of two wafers altogether.
With said method, trough of belt wafer 331 and cover plate wafer 332 are bonded into a black box 335, subsequently, shown in Figure 31 F, cut these assemblies along direction 337 with the direction 336 that is parallel to described groove perpendicular to optic fibre channel guide 333, thereby produce the optical fiber coupling component 310 of some shapes, shown in Figure 31 E, at this moment, along the center that direction 337 cutting perpendicular to optic fibre channel guide 333 causes striding across the window 334 of cover plate wafer 332, thereby this cutting operation will produce the otch 315 at each cover plate 312 rear portion simultaneously.
After the separating sheet that obtains optical fiber coupling component 310, the optical fiber in the fiber array (A) be fixed in optical fiber guide hole 313 ' in.Each sheet is loaded in the shell 317 subsequently, forms the optical conenctor shown in Fig. 4 (f).
Example:
Make and polish two silicon chips, so that a minute surface to be provided, continuous pattern in these silicon chips with V-arrangement optic fibre channel guide and pilot pin groove, these guide grooves are made with same cutting wheel, just the degree of depth of optic fibre channel guide is different from the pilot pin groove, an example of the method for silicon chip is just processed in cutting, available etching of same result or mold pressing and obtain, the shape of the groove of made is not limited to V-arrangement, optic fibre channel guide and pilot pin groove are the V-arrangements at about 60 ° of angles, and accurately be worked in the 0.1 μ m precision, thereby making it to hold the incircle that diameter is respectively 0.125 μ m and 0.500 μ m, optic fibre channel guide has the spacing of 6 0.25mm.And make two pilot pin grooves that the pitch of 0.5mm be arranged, the surface that this and another wafer will engage is cleaned up hill and dale, two plates with after bonding and temporary joint and placing heat-treat under about 1000 ℃ high temperature, in this thermal treatment, two wafers are clamped with a ceramic clip, to guarantee that they closely are bonded together, the result, two wafers almost successfully are being bonded together on the whole zone, and cut made assembly to produce a plurality of separating sheet with optical fiber coupling component of required size.
Each sheet shape optical fiber coupling component all load onto optical fiber and the shell of packing into to make the six fibers connector.External diameter is that the pilot pin of 0.499mm is inserted in any pin-guide hole of two joints of optical fibre making it and links together, and these connectors have provided 0.21dB as the mean value of 120 optical fiber to the connection loss measurement of single-mode fiber.Except their low loss characteristic, these connectors are easy to assembling.
In order to evaluate the reliability of these connectors at composition surface, they have stood various experiments, comprise thermal cycle (40 ℃ to+70 ℃) experiment, heat resistance experiment (80 ℃ * 90%rh), extrusion experiment and inefficacy experiment, in all these experiments, connector not appearance can cause the phenomenon of problem in actual applications.
Above stated specification to example relates to optical conenctor, but should note, optical fiber coupling component of the present invention can be used for the mechanical engagement device of type shown in Figure 33, wherein when cover plate 312 is connected to the top surface of slotted substrate 311 optic fibre channel guide 313 in exposed at both sides, and wherein optical fiber inserts in these guide grooves, to cause their interlocks each other in the optical fiber guide hole.Figure 34 has shown a kind of distortion of optical fiber coupling component of the present invention, when trough of belt substrate 311 is connected with cover plate 312 when being in same plane with the end surfaces that causes them, part optic fibre channel guide 313 obtains exposing, and is provided with the step portion 318 that is used for fixing fiber array at the rear portion of trough of belt substrate.
As previously mentioned, optical fiber coupling component of the present invention is different from the prior art part and is that it does not adopt sandwich construction, utilized the cementing agent that is added between them in this sandwich construction cover plate with executing to engage with slotted substrate, on the contrary, the optical fiber guide hole of optical fiber coupling component of the present invention is by directly cover plate being engaged with the trough of belt substrate under the situation that does not adopt cementing agent through thermal treatment.Coupling component of the present invention can be by inserting the optical fiber guide hole to optical fiber and assembling easily.Optical fiber coupling component of the present invention has very strong clinging power, can be worked into high dimensional accuracy and has high reliability between cover plate and trough of belt substrate.
The method according to this invention, (one is the substrate silicon chip that has the guide groove that is machined into to two wafers, another is the cover plate silicon chip) be engaged, and assembly is cut into and separates the coupling unit sheet, its cover plate and slotted substrate are joined so integral body, thereby, technology of the present invention is suitable for large-scale production optical fiber coupling component, engaging in the two plates with thermal treatment, water on each silicon chip surface and impurity must be removed, and this can utilize guide groove and other to cross over the groove of two plates assembly and realization effectively.
Shown in Figure 29 A to 29D, cover plate 312(generally makes of silicon) engage with slotted substrate (also available silicon making) 311, substrate 311 has optic fibre channel guide 313 and the pilot pin groove made from machining process 314 on its top surface, has optical fiber guide hole 313 to be provided at its inside, and pin-guide hole 314 ' assembly, cover plate 312 parts that are positioned at top, optic fibre channel guide 311 rear portions are removed to form otch 315, make optical fiber can insert easily optical fiber guide hole 313 ', on the other hand, cover plate 312 parts that are positioned at pilot pin groove 314 tops are not removed, and make optical fiber be fixed in optical fiber guide hole 313 ' and groove 313 and can not flow into pilot pin groove (seeing Figure 37) to inject cementing agent 318.
In optical fiber coupling component of the present invention, the optical fiber guide hole is by making a trough of belt substrate and a substrate in conjunction with constituting simply, and therefore, optical fiber can insert and assemble easily, so that the accurately coupling component of fixed fiber of energy size to be provided.
Optical fiber coupling component of the present invention can be made by accurately engaging the trough of belt substrate that a cover plate and has the groove that accurate processing produces.Therefore, by adopting wafer, can under the situation that does not influence the hookup dimensional accuracy, make a large amount of optical fiber coupling components simultaneously as initial trough of belt substrate and cover plate silicon chip.
The feature of optical fiber coupling component of the present invention also is to provide an otch by the cover plate part of removing top, optic fibre channel guide rear portion, this makes optical fiber can easily insert optical fiber guide hole, in the case, if do not remove the cover plate part (promptly still engaging) of guiding cotter way top, just can guarantee to enter outside not inflow of the cementing agent system of fixed fiber the pilot pin groove with the trough of belt substrate.
Example:
Shown in Figure 31 A, the wafer 332 that is used as cover plate is provided with a plurality of rectangular windows made from proper method (as corroding) 334.Shown in Figure 31 B, another wafer 331 as the trough of belt substrate is provided with optic fibre channel guide and the pilot pin groove that is cut into the V-arrangement diamond wheel.Pilot pin groove and optic fibre channel guide be accurately processing all, makes it can hold respectively the incircle of 0.5mm and 0.125mm diameter.Rectangular window 334 can be made with ultrasonic method rather than etch method, and V-shaped groove can utilize the anisotropy of silicon to form by erosion.
Two silicon chips 332 and 331 accurately engage subsequently, to produce the assembly 335 shown in Figure 31 C.Accurately direct silicon-silicon of joint useful binders thin layer or employing high-temperature heat treatment engages and reaches.The assembly that produces is cut into reservation shape along the line shown in Figure 31 D 336 and 337, thereby makes discrete of optical fiber coupling component 310, and they respectively have at optic fibre channel guide 313(sees Figure 31 E) otch 315 on the cover plate 312 of top, rear portion.
The optical fiber coupling component 310 of sheet shape is loaded in the plastic casing 316, as shown in Figure 35 A and 35B.
Figure 35 A and 35B have shown the optical fiber coupling component that is contained in the plastic casing; Figure 35 A is a side view, Figure 35 B shows the longitudinal sectional view that is fixed in the optical fiber in the optical fiber coupling component 310, shown in each, plastic casing 316 has single order shape part 318, wherein fiber array (A) will be fixed by adhesive joint, in embodiment illustrated in fig. 2, plastic casing 316 also has otch 317 at its top surface corresponding to the zone of optical fiber coupling component 310 cover plates 312.Otch 317 be convenient to optical fiber (B) insert optical fiber guide hole 313 ', shown in Figure 35 A and 35B, the distance that optical fiber coupling component 310 stretches out about 0.5mm from the front of the plastic casing 301 of adorning it.This zone that has caused making and to polish only limits to this advantage of front of optical fiber coupling component.
Figure 36 is the top view of 310 2 unit of optical fiber coupling component in the plastic casing 316, and they connect together with pilot pin and be fixing with clip 319.For evaluating the performance of optical fiber coupling component of the present invention, to make six single-mode optical fiber connectors and be used for experiment, the average connection loss of they and refractive index match medium is very low, only 0.23dB.Aforementioned explanation to example is at optical connector.But should notice that optical fiber coupling component of the present invention also can be used for the mechanical engagement device certainly, wherein optical fiber is aimed at connection by contacting with each other in same guide groove.In the case, also can on the cover plate part, provide otch, influence other zones of contact maker to prevent cementing agent from flowing out optic fibre channel guide.
As previously mentioned, optical fiber coupling component of the present invention makes optical fiber can insert the optical fiber guide hole easily, thereby improves the efficient of connection operation.
In optical fiber coupling component of the present invention, otch is located on the cover plate part of optic fibre channel guide top, and the cover plate pilot pin groove above does not partly touch and maintenance engages with slotted substrate and be positioned at.This set stops the bonding agent of injection fibre guiding groove to flow into directing pin groove or outflow system.
In addition, optical fiber coupling component of the present invention is by can producing on high productivity ground as initial slotted substrate and cover plate with wafer.
Figure 38 A to 38C has shown optical connector according to an embodiment of the invention, and Figure 38 A is a side view, and Figure 38 B is that Figure 38 A is along arrow X 1-X 1The cut-open view that direction is seen; Figure 38 C is a top view.
In Figure 38 A to 38C, the optical connector sleeve that 401 expressions are made with proper technology (as the resin mold platen press), it has two pin-guide holes 402.Single optical fiber (B) in the fiber array (A) is accurately fixed with respect to pin-guide hole 402.Two first pin-guide holes 402 that insert on a connector sleeve 401 of pilot pin insert in the respective aperture of another sleeve that aligns with first sleeve, so that two sleeves couple together again.
In the embodiment shown in Figure 38 A to 38C, the part of optical connector sleeve 401 has been cut off, so that the pin-guide hole in zone shown in 403 402 can expose.The pilot pin of the pin-guide hole 402 that exposes by this part of inserting connector sleeve 401 when two optical connectors and when connecting, pilot pin also exposes in pin-guide hole area exposed 403.
Figure 39 is a side view.An example that has shown the pilot pin 404 that is used for connection optical conenctor of the present invention.Will be in when as shown in the figure, pilot pin 404 is in the pin-guide hole 402 that inserts connector sleeve 401 shown in Figure 38 A to 38C when it on the part in the zone 403 and be provided with groove 405.Pilot pin 404 can play a role in groove and fixed by the mode that clamp apparatus will be described with the instructions back.Groove 405 is not set always.If be provided with it, pilot pin can be clamped by apply necessary transverse pressure on pin.
Figure 40 A and 40B have shown an optical conenctor sleeve, and pilot pin has inserted wherein, and it also is equipped with clamping device.Figure 40 A is a longitudinal sectional view, and Figure 40 B is a top view.
In the embodiment of Figure 40 A and 40B, optical conenctor sleeve 401 has flange 406 at its rear portion, and this flange 406 has clamping device as its part.More particularly, the top of flange 406 provides an elastic beam bar 407, and inserted link 408 stretches out downwards from 407.By compression elasticity beam bar 407, inserted link 408 moves down the bottom of the groove 405 in contacting pilot pin 404.According to the present invention, optical conenctor disconnects after inserted link contacts groove 405 bottoms, has in the connector sleeve of pressurized elastic beam bar thereby pilot pin 404 is always stayed.
Figure 41 is the longitudinal sectional view of two optical conenctor sleeve 401a and 401b, and end and end link by pilot pin 404 mutually for they.As shown in the figure, connector cover 401a and 401b have flange 406a and the 406b of elastic beam bar 407a and 407b respectively.Elastic beam bar 407a shown in Figure 41 the right is depressed.Groove 405a bottom connection in inserted link 408a and the pilot pin 404 is touched.On the other hand, another elastic beam bar 407b pressurized not.Thereby inserted link 408b keeps not contact with the bottom of another groove 405b in the pilot pin 404, if connector sleeve 401a at this moment separates with another sleeve 401b, pilot pin 404 is stayed among the sleeve 401a shown in Figure 41 right side certainly.
If used connecting method is Figure 11 A shown type, optics attachment plug links to each other with adapter in the shell.In the case, can provide one to depress or the pressure applying portion in plug, make when plug breaks away from adapter, clamping device acts on the pilot pin in the plug naturally.And operating personnel can transfer to pilot pin and plug in the lump.
Figure 42 A to 42C has shown other embodiment of pin-guide hole area exposed.
Figure 42 A shows an optical conenctor sleeve, wherein silicon plate 411 is stacked in one on the trough of belt silicon chip 410 that has optic fibre channel guide and pilot pin groove on the top surface, and two parts combine by therebetween skim cementing agent, form optical fiber guide hole 413 and pin-guide hole 412.As shown in the figure, on the part of top board 411, be provided with otch 414, thereby the pilot pin slot part in these zones is exposed, and inserted link is moved down, make them contact the bottom of exposed region 414, to clamp pilot pin.
Figure 42 B has shown an embodiment, wherein the optical conenctor sleeve is by connecting trough of belt silicon chip 410 and top silicon chip 411 is made as shown in Figure 42 A, in this embodiment, the part of pin-guide hole 412 is exposed by the rear portion of all removing top board 411, rank shape part 415 is located at the rear portion of slotted substrate 410, as the zone of fixed fiber array.
Figure 42 C has shown the situation that adopts the pilot pin 404 of being longer than the optical connector sleeve, and in this embodiment, the part 416 of stretching out from the rear portion of sleeve is used as the zone of exposing pilot pin.
As previously mentioned, optical connector of the present invention is characterised in that the zone that pin-guide hole exposes is provided on the part of optical connector sleeve, makes pilot pin expose in this zone.If this structure combines with clamping device, the operator can connect or separated light connector sleeve, and which cover the pilot pin that can know for sure is simultaneously stayed in.
Shown the clamping device example that works by exerting pressure among Figure 40 A, the 40B and 41, but according to specific use or connector sleeve size, various change shape can be by introducing some specific characteristic in the flange or connector plug design of shell that will install on the sleeve under the situation that does not break away from the scope of the invention and spirit.
Example:
One four fiber optics connector sleeve is made by a trough of belt silicon chip of Colaesce and a flat silicon chip, and it has the shown style of Figure 42 A to 42C.A band edge pressure applying means as shown in Figure 3 is contained on the sleeve, and this assembly is experimentized.The pilot pin external diameter of using in this sleeve is 0.7mm and has the groove that external diameter is 0.3mm.Each pilot pin length overall 8mm.The groove of pilot pin both sides is that 1.5mm is long.The band edge pressure applying means makes with plastics and for good and all is fixed on the silicon connector sleeve with cementing agent.
Experimentize is for assessing following parameter: the optical link loss; Change because of repeating to connect/dismantle the optical link loss that causes; And pilot pin stays success ratio in the suitable sleeve after dismounting, on average connect loss and be 0.28dB and repeatedly connections/dismounting circulate caused connection loss variation within ± 0.08dB.In connection/dismounting experiment (n=500), pilot pin is always stayed in the sleeve that pressure applying means presses, this show the operator connecting/during disassembling section, can recognize which cover pilot pin is stayed in.
In the invention described above optical conenctor, the part pilot pin exposes in the connector sleeve, if these characteristics combine with clamping device, the operator can accurately understand directing pin and stay behind lock out operation in which cover, and this makes the operator can more effectively connect and dismantle optical conenctor.
As mentioned above, according to the present invention, very little value is eliminated or is reduced in the gap that takes place between pilot pin and its pin-guide hole that will be connected fully, thereby the optical fiber low-loss that has realized consistent mode connects.In addition, optical conenctor sleeve of the present invention can accurately and easily be dismantled and connect.Also have, method of the present invention is suitable for extensive optical conenctor production.

Claims (28)

1, a kind of optical conenctor comprises:
A fiber optic connector sleeve, it comprises that one has at least one optical fiber duct that is formed at respectively on the surface thereof and the substrate and a cover plate that engages with described substrate of cotter way, thereby forms the optical fiber slotted eye that at least one inserts optical fiber;
Insert the pin assembly in the described cotter way, be used for described fiber optic connector sleeve and another fiber optic connector sleeve are connect;
Be used to absorb the device of the vary in diameter of described pin assembly;
It is characterized in that: described pin assembly comprises a chipware with high Young's modulus, described absorption plant comprises the skin that at least one is covered with described chipware and low Young modulus is arranged, and described cover plate engages with described substrate and forms the cotter way hole of inserting described pin assembly.
2, the described optical conenctor of a kind of claim 1, wherein said skin makes with plastics.
3, the described optical conenctor of a kind of claim 1, wherein said skin is formed by the resilient material coating.
4, a kind of optical conenctor of claim 1, wherein the described pin assembly of at least a portion forms a small diameter portion.
5, a kind of optical conenctor of claim 1, wherein said pin-and-hole has the triangular-section.
6, the described optical conenctor of a kind of claim 1, wherein said pin-and-hole has polygonal cross-section.
7, a kind of optical conenctor comprises:
A fiber optic connector sleeve, it comprises that one has at least one optical fiber duct that is formed at respectively on the surface thereof and the substrate and a cover plate that engages with described substrate of cotter way, thereby forms the optical fiber slotted eye that at least one inserts optical fiber;
Insert the pin assembly in the described cotter way, be used for described fiber optic connector sleeve and another fiber optic connector sleeve are connect;
Be used to absorb the device of the vary in diameter of described pin assembly;
It is characterized in that: described absorption plant comprises a clip with elastic pressure, and wherein said pin assembly is arranged in and exposes and be the fixing cotter way of described clip.
8, a kind of optical conenctor of claim 7, wherein said pin assembly is made by pottery.
9, the described optical conenctor of a kind of claim 7, wherein said pin assembly is made by zirconia.
10, a kind of optical conenctor of claim 1, wherein said substrate is joined together to form described at least one optic fibre hole and pin-and-hole with one deck binding material that adds therebetween with described cover plate, does not have described bonding material layer on described at least one optic fibre channel guide and described cotter way.
11, a kind of optical conenctor of claim 10, wherein said binding material is made with resist.
12, a kind of optical conenctor comprises:
A fiber optic connector sleeve, it comprises that one has at least one optical fiber duct that is formed at respectively on the surface thereof and the substrate and a cover plate that engages with described substrate of cotter way, thereby forms the optical fiber slotted eye that at least one inserts optical fiber;
Insert the pin assembly in the described cotter way, be used for described fiber optic connector sleeve and another fiber optic connector sleeve are connect;
Be used to absorb the device of the vary in diameter of described pin assembly;
It is characterized in that: at least one described at least one optical fiber duct and described cotter way have the seam that the axis direction that is basically parallel to described at least one optical fiber duct and described cotter way stretches, and its connects described at least one optical fiber duct and described cotter way.
13, a kind of optical conenctor of claim 12, wherein said pin assembly is made with pottery.
14, a kind of optical conenctor of claim 12, wherein said pin assembly is made with zirconia.
15, a kind of optical conenctor of claim 1, at least one in wherein said substrate and the cover plate made with silicon.
16, a kind of optical conenctor of claim 1, at least one in wherein said substrate and the cover plate made with pottery.
17, a kind of optical conenctor of claim 1, wherein, at least one in described substrate and the cover plate is made of plastic.
18, a kind of optical conenctor of claim 17, wherein, described pin assembly is made with pottery.
19, a kind of optical conenctor of claim 17, wherein, described pin assembly is made with zirconia.
20, a kind of optical conenctor of claim 1, wherein, described cover plate has the groove that is positioned at described pin-and-hole top, and described absorption plant is included in the elastic layer in the described groove.
21, a kind of optical conenctor of claim 1, wherein, described cover plate and described substrate are made with silicon, rely on Si-O-Si key the former with the latter to connect.
22, a kind of optical conenctor of claim 1, wherein, described cover plate and described substrate are made with silicon, rely on Si-Si key the former with the latter to connect.
23, a kind of optical conenctor of claim 1, wherein said cover plate engage with described substrate without binding material.
24, a kind of optical conenctor of claim 1, wherein, described pin assembly has circular cross section, and described cotter way has non-circular cross sections, 3 contacts of the former with the latter.
25, a kind of optical conenctor of claim 24, wherein said cover plate and substrate join to form described at least one optic fibre hole and pin-and-hole, the part that described cover plate is positioned at top, described at least one optical fiber duct rear portion is removed to form an otch, and wherein its rear portion is exposed and described cover plate is positioned at the part of top, described pin-and-hole rear portion and does not remove.
26, a kind of optical conenctor of claim 1, wherein said cover plate engages with substrate to form the cotter way hole, each described pin-and-hole partly exposes from described fiber optic connector sleeve, even described pin assembly also exposes at exposed region when two optical connectors are bound up.
27, a kind of optical conenctor of claim 26 also comprises clamping device, is used for acting on the zone that pin assembly exposes.
28, a kind of optical conenctor of claim 27, wherein said pin assembly are provided with groove in the zone that it exposes and described clamping device acts on the described groove.
CN 87107863 1986-11-15 1987-11-14 Optical connector and mothod of making same Expired - Fee Related CN1025370C (en)

Applications Claiming Priority (10)

Application Number Priority Date Filing Date Title
JP272538/86 1986-11-15
JP27253886A JPS63125908A (en) 1986-11-15 1986-11-15 Optical connector
JP288539/86 1986-12-03
JP8761/87 1987-01-16
JP62114236A JP2569329B2 (en) 1987-05-11 1987-05-11 Optical connector
JP114236/87 1987-05-11
JP224373/87 1987-09-08
JP62224373A JPH07104459B2 (en) 1987-09-08 1987-09-08 Optical fiber coupling member and manufacturing method thereof
JP22942087A JPS6472104A (en) 1987-09-11 1987-09-11 Optical fiber coupling member
JP229420/87 1987-09-11

Publications (2)

Publication Number Publication Date
CN87107863A CN87107863A (en) 1988-09-28
CN1025370C true CN1025370C (en) 1994-07-06

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CN 87107863 Expired - Fee Related CN1025370C (en) 1986-11-15 1987-11-14 Optical connector and mothod of making same

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Publication number Priority date Publication date Assignee Title
US8529138B2 (en) * 2010-07-15 2013-09-10 Tyco Electronics Corporation Ferrule for optical transports
JP6496611B2 (en) * 2015-06-05 2019-04-03 三和電気工業株式会社 Boots for optical connector ferrules
CN106646759A (en) * 2016-11-04 2017-05-10 潮州三环（集团）股份有限公司 Guide pin and preparation method thereof
CN107717295A (en) * 2017-10-31 2018-02-23 芜湖普威技研有限公司 The clamp system of weld bolt

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