CN203658624U

CN203658624U - Calibration system

Info

Publication number: CN203658624U
Application number: CN201420020758.7U
Authority: CN
Inventors: 童朝阳; 林麟; 刘蕾
Original assignee: Tyco Electronics Shanghai Co Ltd
Current assignee: Tyco Electronics Shanghai Co Ltd
Priority date: 2014-01-14
Filing date: 2014-01-14
Publication date: 2014-06-18
Anticipated expiration: 2024-01-14

Abstract

The utility model discloses a calibration system. The calibration system comprises: a calibration insertion core having an alignment guide hole; an alignment guide element which is used for making the center of the guide hole of an object insertion core aligned with the center of the alignment guide hole; a fiber core calibration element, wherein the center of the fiber core is located at a theory center determined by taking the center of the alignment guide hole as the locating reference; an optical vision system which is used for identifying the central position of the fiber core of an object fiber and the central position of the fiber core of the corresponding fiber core calibration element; and a control and movement system which is used for actively adjusting the position of the object fiber in the through hole of the object insertion core under the guide of the optical vision system to make the center of the fiber core of the object fiber aligned with the center of the fiber core of the corresponding fiber core calibration element so as to eliminate the insertion loss caused by radial deviation between the actual center of the fiber core of the fiber and the theory center determined by taking the center of the guide hole of the object insertion core as the locating reference.

Description

Calibration system

Technical field

The utility model relates to calibration system and the calibration steps in the position of the through hole of lock pin for fiber optic calibration, and the fiber stub assembly and the joints of optical fibre that utilize this calibration system and calibration steps to produce.

Background technology

Be applied to the lock pin of the joints of optical fibre, claim again pin body.Lock pin is the core component of the joints of optical fibre, and it is a kind of high precision components forming by precision processing technology.In joints of optical fibre manufacturing process, conventionally adopt and will peel off also clean bare fibre through the high precision lock pin through hole that is full of glue, then to it glue that is heating and curing, optical fiber is fixed in high precision lock pin, then makes required optical fiber connector via a series of programs such as polishing, polishing, tests.Because all manufacture processes can produce inevitable error and introduce artificially error for dimensional fits/assembling needs, for example, lock pin through-hole diameter must be greater than optical fiber external diameter so that optical fiber can penetrate in through hole, need to there is inborn error in optical fiber external diameter and lock pin clear size of opening like this, for another example, optical fiber axle center and lock pin through hole are owing to there being space to exist decentraction and lock pin through hole and alignment fiducials to have processing and manufacturing error etc., these factors all can cause that the lateral excursion in optical fiber axle center (also has other factors certainly, as angle mismatching etc.), thereby the insertion loss while affecting joints of optical fibre docking.

Because the mode field diameter of single-mode fiber is more much smaller (for most of optical fiber communications than the mode field diameter of multimode optical fiber, roughly 1/5 to 1/6 relation), therefore, the alignment precision of single-mode fiber requires will be far away higher than the alignment precision requirement to multimode optical fiber, like this, the lock pin precision that the lock pin precision that single-mode optical fiber connector uses will be used higher than multimode optical fiber connector far away.In order to guarantee to guarantee that in manufacture process single-mode optical fiber connector reaches the requirement of industry standard index of correlation, manufacture field at the joints of optical fibre at present, conventionally use respectively the lock pin of different accuracy requirement for list, multimode optical fiber, multimode optical fiber connector is distinguished with lock pin and single-mode optical fiber connector lock pin.Its outward appearance of single mode/multimode lock pin that the joints of optical fibre use, it is identical that structure seems, but single mode lock pin requires very high to the relative dimensions of lock pin, especially the concentricity accuracy requirement of the definite theoretical center in the center of the through hole of through-hole aperture and lock pin and center based on cylindrical or guide hole is high (conventionally will be in 1.5 microns, ultralow insertion loss while connection in order to meet docking, precision even will be controlled at sub-micron rank-be less than 1 micron), the most direct result of high-precision requirement is, the high cost of single mode connector that causes of single mode lock pin cost/price is high, especially outstanding for ultra-low loss connector, lock pin cost is almost difference at double.

Single mode porous optical fiber lock pin to the relative dimensions of lock pin require be mainly require at the quality of fit of the positional precision of lock pin optical fiber through-hole diameter precision alignment guidance pin hole relative to optical fiber through hole and a pair of alignment guidance pin hole that matches each other very high, the dimension precision requirement in the following aspects by contrast single mode lock pin and multimode lock pin below:

1) alignment guidance pin hole quality of fit

Single mode: lock pin alignment guidance pin diameter precision is generally +/-0.0005mm, and the guiding pin hole internal diameter precision of coupling is +/-0.001mm; To low-loss requirement, the accuracy requirement of alignment guidance pin diameter reaches +/-0.0001mm; The guiding pin hole internal diameter precision of coupling is +/-0.0003mm simultaneously;

Multimode: the guiding pin hole internal diameter precision of lock pin alignment guidance pin diameter precision and coupling is +/-0.001mm.

2) lock pin optical fiber through-hole diameter:

Single mode: the accuracy requirement of lock pin optical fiber through-hole diameter, at +/-0.00075mm, even requires +/-0.0003mm for low-loss single mode lock pin optical fiber clear size of opening;

Multimode: the accuracy requirement of lock pin optical fiber through-hole diameter is at +/-0.001mm.

3) positional precision of lock pin optical fiber through hole and alignment guidance pin hole:

Single mode: positional precision General Requirements reaches 0.003mm, for low-loss single mode lock pin, position accuracy demand even reaches 0.0018mm;

Multimode: positional precision General Requirements reaches 0.006mm.

Manufacture the deficiency in field for making up the joints of optical fibre, applicant of the present utility model has proposed the lock pin (it have compared with large through-hole aperture and compared with large eccentricity) of a kind of use based on low precision and has manufactured the novel technique of the single-mode optical fiber connector of low cost, high-performance (low insertion loss), easy operating in patented claim before.

This new technology is a kind of technology that realizes lock pin through hole that single-mode fiber is placed in low precision and produce high precision ferrule assembly, it is characterized by the fiber guides that protrudes from insertion core end face is entered to independently high precision alignment instrument, make the high-precision calibration hole of single-mode fiber clad to be made and high precision alignment instrument carry out close adjustment, and it is fixed in low precision lock pin to be made, thereby, produce high-precision fiber stub assembly and the joints of optical fibre with the lock pin of low precision.

But because this technology is the mechanism of aiming at based on optical fibre packages coating, it need to have the comparatively good precondition that is distributed as with the concentricity between optical fibre packages coating and fibre core, further, in the actual manufacture process of optical fiber, between clad and fibre core, can inevitably there is the error (eccentric) of decentraction, and in the process of aiming at by tool master, there is stochastic error in the diameter of optical fibre packages coating, the processing procedure control of batch error and different manufacturers all can cause some random differences to a certain extent, in addition, the possibility that cover surface exists the foreign matters such as a little molecule/dust to adhere to, like this after clad high precision alignment, can not guarantee that fibre core obtains consistent full accuracy and aims at.For this deficiency, spy proposes the utility model just.

Utility model content

The purpose of this utility model is intended to solve at least one aspect of the above-mentioned problems in the prior art and defect.

An object of the present utility model be to provide a kind of for fiber optic calibration calibration system and the calibration steps in the position of the through hole of lock pin, it can make the center take the guide hole of lock pin of being centrally located in of fibre core of optical fiber as the definite theoretical center place of positioning datum, thus eliminated optical fiber fibre core center and with the center of the guide hole of lock pin for the insertion loss that radial missing was caused between the definite theoretical center of positioning datum.

According to an aspect of the present utility model, a kind of calibration system is provided, the position for calibration target optical fiber at the through hole of target lock pin, wherein, described calibration system comprises:

There is the calibration lock pin of aiming at guide hole;

Aim at guide element, for making the center and the center aligning of aiming at guide hole of guide hole of target lock pin;

Fibre core calibrating element, the center that being centrally located in of the fibre core of described fibre core calibrating element aimed at guide hole is the definite theoretical center place of positioning datum;

Optical vision system, for identifying the center of fibre core of target optical fiber and the center of the fibre core of corresponding fibre core calibrating element; With

Control and mobile system, for under the guiding of optical vision system active adjustment target optical fiber in the position of the through hole of target lock pin, the center of the fibre core of target optical fiber is aimed at the center of the fibre core of corresponding fibre core calibrating element, thereby made the center take the guide hole of target lock pin of being centrally located in of fibre core of target optical fiber as the definite theoretical center place of positioning datum.According to the embodiment of an exemplary of the present utility model, described target lock pin has multiple through holes, and in each through hole, holds respectively a root object optical fiber; And described calibration system comprises and many root objects optical fiber many fibre core calibrating elements one to one, for calibrating respectively the position of every root object optical fiber at through hole separately.

According to the embodiment of another exemplary of the present utility model, described many fibre core calibrating elements are arranged in a line or multirow, and in every a line, the spacing between the center of wantonly two adjacent fibre core calibrating elements is identical.

According to the embodiment of another exemplary of the present utility model, described aligning guide element be fixed on calibration lock pin aligning guide hole in or with calibration lock pin integral.

According to the embodiment of another exemplary of the present utility model, described fibre core calibrating element be fixed on calibration lock pin through hole in or with calibration lock pin integral.

According to the embodiment of another exemplary of the present utility model, described aligning guide element is register pin, and insert respectively in the guide hole of calibration lock pin and target lock pin at the two ends of described register pin.

According to the embodiment of another exemplary of the present utility model, described optical vision system at least comprises: the first imaging device, for the first direction photographic subjects optical fiber along vertical with the central axis of aiming at guide element and the first image of fibre core calibrating element; The second imaging device, for the second direction photographic subjects optical fiber along vertical with the central axis of aiming at guide element and the second image of fibre core calibrating element, described second direction is perpendicular to first direction; And image recognition apparatus, for identifying the center of fibre core of target optical fiber and the center of the fibre core of fibre core calibrating element of the first image, and for identifying the center of fibre core of target optical fiber and the center of the fibre core of fibre core calibrating element of the second image.

According to the embodiment of another exemplary of the present utility model, described the first imaging device comprises: the first light source, is arranged on the side along first direction of aiming at guide element; With the first video camera, be relatively arranged on the first light source the opposite side along first direction of aiming at guide element.

According to the embodiment of another exemplary of the present utility model, described the second imaging device comprises: secondary light source, is arranged on the side along second direction of aiming at guide element; With the second video camera, be relatively arranged on secondary light source the opposite side along second direction of aiming at guide element.

According to the embodiment of another exemplary of the present utility model, described image recognition apparatus comprises the image processing system that the first image and the second image are processed.

According to the embodiment of another exemplary of the present utility model, protrude from the end face of target lock pin the end of described target optical fiber, and protrude and relative with the end part interval of described target optical fiber from the end face of calibration lock pin the end of described fibre core calibrating element.

According to the embodiment of another exemplary of the present utility model, the image of the end that described the first imaging device is relative with the interval of fibre core calibrating element with the second imaging device photographic subjects optical fiber.

According to the embodiment of another exemplary of the present utility model, described mobile system comprises: mechanical arm, has the fibre clip for clamping target optical fiber; And closed-loop feedback control system, the position of fibre clip is regulated until described error is zero or in predetermined scope for the error between the center of fibre core of target optical fiber and the center of the fibre core of fibre core calibrating element that detect according to optical vision system.

According to the embodiment of another exemplary of the present utility model, described preset range is-0.001mm to 0.001mm.

According to the embodiment of another exemplary of the present utility model, described preset range is-0.3um to 0.3um.

According to another aspect of the present utility model, provide a kind of for calibration target optical fiber the calibration steps in the position of the through hole of target lock pin, comprise the steps:

Provide have aim at guide hole calibration lock pin, aim at guide element and fibre core calibrating element, the center that being centrally located in of the fibre core of described fibre core calibrating element aimed at guide hole is the definite theoretical center place of positioning datum;

With the center of guide hole of aiming at guide element calibration target lock pin, make the center and the center aligning of aiming at guide hole of the guide hole of target lock pin; With

The position of active adjustment target optical fiber in the through hole of target lock pin under the guiding of optical vision system, makes the center of the fibre core of target optical fiber aim at the center of the fibre core of fibre core calibrating element.

According to the embodiment of an exemplary of the present utility model, described target lock pin has multiple through holes, and in each through hole, holds respectively a root object optical fiber; And described calibration system comprises and many root objects optical fiber many fibre core calibrating elements one to one, for calibrating respectively the position of every root object optical fiber at through hole separately.

According to the embodiment of another exemplary of the present utility model, described error comprise according to the first image detection to the center of fibre core of target optical fiber and the center of the fibre core of fibre core calibrating element between the first error and the second error between the center of fibre core of target optical fiber of arriving according to the second image detection and the center of the fibre core of fibre core calibrating element.

According to another aspect of the present utility model, a kind of calibration system is provided, the position for calibration target optical fiber at the through hole of target lock pin, wherein, described calibration system comprises:

There is the calibration lock pin of aiming at guide hole;

Optical vision system, for identifying the center of aiming at the center of guide hole and the guide hole of target lock pin, and for identifying the center of fibre core of target optical fiber and the center of the fibre core of corresponding fibre core calibrating element; With

Control and mobile system, for the center of the guide hole of active alignment target lock pin under the guiding of optical vision system and the center of aligning guide hole, and for active adjustment target optical fiber under the guiding of optical vision system in the position of the through hole of target lock pin, the center of the fibre core of target optical fiber is aimed at the center of the fibre core of corresponding fibre core calibrating element, thereby made the center take the guide hole of target lock pin of being centrally located in of fibre core of target optical fiber as the definite theoretical center place of positioning datum.

Fibre core calibrating element is provided and has the calibration lock pin of guide hole of aligning, the center that being centrally located in of the fibre core of described fibre core calibrating element aimed at guide hole is the definite theoretical center place of positioning datum;

The center of the center of the guide hole of active alignment target lock pin and aligning guide hole under the guiding of optical vision system; With

According to another aspect of the present utility model, a kind of method of manufacturing fiber stub assembly is provided, described fiber stub assembly comprises lock pin and is arranged in the optical fiber of through hole of lock pin, described method comprises the steps:

Utilize such alignment system or calibration steps to calibrate the position in the through hole of lock pin optical fiber, the center of fibre core of optical fiber and the center of the guide hole take lock pin are aimed at as the definite theoretical center of positioning datum; With

Utilize glue or equivalent curable body that optical fiber is fixed in the through hole of lock pin.

According to another aspect of the present utility model, a kind of fiber stub assembly is provided, comprise lock pin and be arranged in the optical fiber of through hole of lock pin, wherein, described fiber stub assembly utilizes preceding method to make.

According to another aspect of the present utility model, a kind of joints of optical fibre are provided, comprising:

Housing; With

Insert the fiber stub assembly in housing,

Wherein, described fiber stub assembly is aforementioned fiber stub assembly.

Fibre core calibrating element, the definite theoretical center place of the positioning datum that is centrally located in based target lock pin of the fibre core of described fibre core calibrating element;

Optical vision system, for identifying the center of fibre core of target optical fiber and the center of the fibre core of fibre core calibrating element; With

Mobile system, in the position of the through hole of target lock pin, makes the center of the fibre core of target optical fiber aim at the center of the fibre core of fibre core calibrating element for active adjustment target optical fiber under the guiding of optical vision system.

Provide fibre core calibrating element, the definite theoretical center place of the positioning datum that is centrally located in based target lock pin of the fibre core of described fibre core calibrating element; With

The utility model belongs to joints of optical fibre field, the utility model is different from the employing high precision lock pin of prior art or adopts low precision lock pin to be equipped with truing tool independently the technology of optical fibre packages coating being carried out to high precision alignment, but a kind of mobile device that uses carries out active alignment based on optical vision system to fibre core, realization utilizes the lock pin to be made of low precision or target lock pin (compared with the lock pin of standard, the lock pin to be made of this low precision has compared with large through-hole aperture and compared with large eccentricity) manufacture low cost, very-high performance (ultralow insertion loss), the fiber stub assembly of easy operating and innovating technologies of the joints of optical fibre, this technical scheme realizes the joints of optical fibre of the ultra-low loss of future generation that is close to 0dB loss (lossless).

Propose before applicant of the present utility model to pass through the technology that high precision alignment instrument carries out optical fiber align be the mechanism of aiming at based on optical fibre packages coating, utilized the concentricity between optical fibre packages coating and fibre core to there is this condition of comparatively good distribution, but, due in the actual manufacture process of optical fiber, between clad and fibre core, can inevitably there is the error of decentraction, and in the process of aiming at by tool master, there is random deviation in the diameter of optical fibre packages coating, batch deviation, the control deviation of manufacturer all can cause some random differences to a certain extent, in addition, the foreign matters such as a little molecule/dust that cover surface may be adhered to, like this after clad high precision alignment, realize lower junction loss, but because fibre core is difficult to obtain consistent, the aligning of full accuracy, be difficult to realize consistent ultra-low loss (lossless) connector.

The utility model is distinguished and is compared with passing through of proposing the before technical scheme that high precision alignment instrument carries out optical fibre packages coating aligning, what the utility model adopted is utilize image recognition fibre core profile by the fiber core active alignment in connector processed the fiber core in the fibre core in be fixed on high precision single mode ferrule assembly with high precision in calibration unit (its contained fibre core calibration is first has certain protruding fine length, the physical centre of its fibre core is accurately controlled in Nano grade with respect to the bias based on the definite theoretical center position of lock pin guide hole, close to 0), like this, aim at the fibre core of optical fiber rather than the clad of optical fiber by contactless image recognition, thereby evade the random difference of bias between fibre core and the clad of optical fiber processed completely, the random difference of clad diameter, the whether intact and clad outside surface clean conditions of fiber end face state etc. is easy to the factor impact of impact based on optical fibre packages coating alignment precision, reach Nano grade alignment precision, by being fixed in the low precision lock pin of system at optical fiber processed of having aimed at, from instrument, take out at ferrule assembly processed (at optical fiber processed based on fibre core high-precision calibration and be fixed in lock pin processed), through the necessary one-tenth end processing to end face, assembling, test, like this, by initiatively the low cost that high precision alignment is made being carried out in fibre core position, the superhigh precision joints of optical fibre of ultra-low loss complete.

Especially, for making multi-fiber connector, active alignment system contains high precision alignment guide element, including fibre core calibrates first high precision ferrule assembly (its contained fibre core calibration unit has certain protruding fine length, and be fixed in high precision single mode lock pin with high precision, be the physical centre of its fibre core with respect to the bias based on the definite theoretical center position of lock pin guide hole at Nano grade, close to 0) and three part compositions of fibre core profile vision alignment system, be respectively used to be aligned in guide hole and the high precision alignment guide element of the low precision lock pin of system, alignment fiducials at fiber core processed is provided, detection and the fiber core of active alignment in ferrule assembly processed and the fibre core in high precision single mode ferrule assembly are calibrated the positional precision between first fibre core, the deviation adjusting of the physical axis that makes two fibre cores in the two dimensional surface perpendicular to axle center, be registered in Nano grade.

Compared with the scheme of carrying out optical fibre packages coating aligning with use high precision alignment instrument, this technical scheme is the mode that adopts fibre core active alignment, thereby realize the ultimate controllability in fiber core positional precision processed, predictability, the high precision reproducibility of individuality to individuality, batch difference and random difference because of bare fibre diameter (clad diameter) are reduced to greatest extent, the impact of the factor such as bias and stochastic pattern between clad and fibre core, performance and the random interaction (ultralow insertion loss and ultralow random interworking insertion loss) of connector are improved so to greatest extent.

The utility model employing is carried out active calibration technology to fiber core and has been realized the high-quality single-mode optical fiber connector part based on low precision lock pin production low cost, ultra-low loss.

It should be noted that; although this technology is take the single-mode optical fiber connector of realizing ultra-low loss based on low precision lock pin as target; meanwhile, this technology is also applicable to being adjusted to the multimode optical fiber connector of making superhigh precision ultra-low loss, also within the scope of this utility model protection.

Although this technology illustrates utility model thought take multi-fiber connector as example, meanwhile, this technology be equally applicable to single fiber-optic connector, therefore, with this fabrication techniques single core connector also within the scope of this utility model protection.

By the description of hereinafter with reference to accompanying drawing, the utility model being done, other object of the present utility model and advantage will be apparent, and can help that the utility model is had to comprehensive understanding.

Accompanying drawing explanation

Fig. 1 shows according to the schematic diagram of the high precision alignment guide element of the calibration system of the embodiment of an exemplary of the present utility model and high precision fibre core calibrating element;

Fig. 2 A and Fig. 2 B show respectively the high precision fibre core calibrating element shown in Fig. 1 and fix transverse sectional view and the longitudinal sectional view of the amplification of the high-precision calibration lock pin of this high precision fibre core calibrating element;

Fig. 3 shows high precision alignment guide element is inserted with the cut-open view along horizontal fore-and-aft plane after in the guide hole of the target lock pin (lock pin to be made) of target optical fiber;

Fig. 4 shows according to the schematic diagram of the optical vision system of the calibration system of the embodiment of an exemplary of the present utility model;

Fig. 5 A demonstration utilizes the optical vision system shown in Fig. 4 along first direction (the direction X shown in Fig. 4), target optical fiber and high precision fibre core calibrating element to be carried out the schematic diagram of optical imagery;

Fig. 5 B demonstration utilizes the optical vision system shown in Fig. 4 along second direction (the direction Y shown in Fig. 4), target optical fiber and high precision fibre core calibrating element to be carried out the schematic diagram of optical imagery;

Fig. 6 shows and utilizes target optical fiber that the optical vision system shown in Fig. 4 photographs along first direction (the direction X shown in Fig. 4) and the first image of high precision fibre core calibrating element;

Fig. 7 is presented under the guiding of optical vision system, the center of the fibre core of target optical fiber to be initiatively moved into the center of the fibre core of high precision fibre core calibrating element and aims at image afterwards; With

Fig. 8 show according to the embodiment of an exemplary of the present utility model for controlling the schematic diagram of closed loop position feedback control system of mobile device.

Embodiment

Below by embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.In instructions, same or analogous drawing reference numeral is indicated same or analogous parts.Followingly with reference to accompanying drawing, the explanation of the utility model embodiment is intended to overall utility model design of the present utility model to make an explanation, and does not should be understood to a kind of restriction of the present utility model.

In the embodiment of an embodiment shown in Fig. 1 to Fig. 8, a kind of calibration system is provided, for calibration target optical fiber 30, in the position of the through hole 31 of target lock pin 20, wherein, described calibration system comprises: the high-precision calibration lock pin 200 with high precision alignment guide hole 201; High precision alignment guide element 100, aims at high precision alignment guide hole 201 center for the guide hole 21 center that makes target lock pin 20; High precision fibre core calibrating element 300, being centrally located in of the fibre core 302 of described high precision fibre core calibrating element 300 is the definite theoretical center place of positioning datum take high precision alignment guide hole 201 center; Optical vision system, for identifying the center of fibre core 32 of target optical fiber 30 and the center of the fibre core 302 of corresponding high precision fibre core calibrating element 300; With control and mobile system, for under the guiding of optical vision system active adjustment target optical fiber 30 in the position of the through hole 31 of target lock pin 20, the fibre core 32 center that makes target optical fiber 30 is aimed at the fibre core 302 center of corresponding high precision fibre core calibrating element 300, thereby makes the guide hole 21 center take target lock pin 20 of being centrally located in of fibre core 32 of target optical fiber 30 as the definite theoretical center place of positioning datum.

It should be noted that, the term " high precision " in the application refers to " precision is greater than or equal to the precision of the industry standard defined of the joints of optical fibre ".But, because the precision of the industry standard defined of the joints of optical fibre is constantly to change with the variation in epoch, therefore, the term " high precision " in the application is not limited to certain fixed numbers or certain fixed numbers scope, and it can change according to the variation in epoch.

Fig. 1 shows according to the schematic diagram of the high precision alignment guide element 100 of the calibration system of the embodiment of an exemplary of the present utility model and high precision fibre core calibrating element 300.Fig. 3 shows that high precision alignment guide element just inserts with the cut-open view along horizontal fore-and-aft plane after in the guide hole of the target lock pin (for the manufacture of the lock pin of fiber stub assembly or the joints of optical fibre) of target optical fiber (for the manufacture of the optical fiber of fiber stub assembly or the joints of optical fibre).

As shown in figures 1 and 3, target lock pin 20 is multicore lock pin, and this target lock pin 20 has multiple through holes 31, and holds respectively a root object optical fiber 30 in each through hole 31; And calibration system comprises and many root objects optical fiber 30 many high precision fibre core calibrating elements 300 one to one, for calibrating respectively the position of every root object optical fiber 30 at through hole 31 separately.

In the embodiment of an exemplary of the present utility model, as shown in Figure 3, the diameter of the through hole 31 of target lock pin 20 is much larger than the diameter of target optical fiber 30, be convenient to like this in through hole 31 that target optical fiber 30 is inserted into target lock pin 20, also can reduce the manufacturing cost of target lock pin 20, because do not need to provide and the high-precision through hole of target optical fiber 30 precision-fit.But, because the size of the through hole 31 of target lock pin 20 is larger, therefore, be difficult to guarantee the positional precision of target optical fiber 30 in the through hole 31 of target lock pin 20, be difficult to guarantee that the guide hole 21 center take target lock pin 20 of being centrally located in of fibre core 32 (referring to Fig. 6) of target optical fiber 30 is as the definite theoretical center place of positioning datum.

Fig. 2 A and Fig. 2 B show respectively the high precision fibre core calibrating element 300 shown in Fig. 1 and fix transverse sectional view and the longitudinal sectional view of the amplification of the high-precision calibration lock pin 200 of this high precision fibre core calibrating element 300.

As shown in Figure 1 to Figure 3, in illustrated embodiment, high precision alignment guide element 100 is fixed in the high precision alignment guide hole 201 of high-precision calibration lock pin 200.High precision fibre core calibrating element 300 is fixed in the through hole of high-precision calibration lock pin 200.As shown in Figure 2 B, high precision fibre core calibrating element 300 has fibre core 302 and the clad 301 that is coated on fibre core 302 outsides.In illustrated embodiment, the fibre core 302 center of many high precision fibre core calibrating elements 300 is positioned at respectively each theoretical center place determining take high precision alignment guide hole 201 center as positioning datum.

As shown in Figure 1 to Figure 3, many high precision fibre core calibrating elements 300 are separately fixed in multiple through holes of high-precision calibration lock pin 200.But the utility model is not limited to illustrated embodiment, many high precision fibre core calibrating elements 300 can form as one with high-precision calibration lock pin 200.

Please continue referring to Fig. 1 to Fig. 3, in the embodiment of illustrated exemplary, many high precision fibre core calibrating elements 300 are arranged in a line, and spacing between wantonly two adjacent high precision fibre core calibrating element 300 centers is identical.But the utility model is not limited to illustrated embodiment, many high precision fibre core calibrating elements 300 also can be arranged in multirow, and in every a line, the spacing between the center of wantonly two adjacent high precision fibre core calibrating elements is identical.

Please continue referring to Fig. 1 to Fig. 3, in the embodiment of illustrated exemplary, high precision alignment guide element 100 is hi-Fix pin, and insert respectively in the high precision alignment guide hole 201 of high-precision calibration lock pin 200 and the guide hole 21 of target lock pin 20 at the two ends of hi-Fix pin.Like this, utilize high precision alignment guide element 100, just can make the guide hole 21 center of target lock pin 20 and the high precision alignment guide hole 201 center of high-precision calibration lock pin 200 aim at.For example, make error between the guide hole 21 center of target lock pin 20 and the high precision alignment guide hole 201 center of high-precision calibration lock pin 200 in the scope of-0.001mm to 0.001mm, preferably, in the scope of-0.3 μ m to 0.3 μ m.

As shown in Figure 1 to Figure 3, the high precision alignment guide hole 201 center take high-precision calibration lock pin 200 of being centrally located in of the fibre core 302 of high precision fibre core calibrating element 300 is as the definite theoretical center place of positioning datum.

As previously mentioned, because the diameter of the through hole 31 of target lock pin 20 is much larger than the diameter of target optical fiber 30, therefore, after target optical fiber 30 inserts in the through hole 31 of target lock pin 20, be difficult to guarantee that the fibre core 32 center of target optical fiber 30 and guide hole 21 center take target lock pin 20 aim at as the definite theoretical center of positioning datum, be difficult to guarantee that the fibre core 32 center of target optical fiber 30 and the fibre core 302 center of high precision fibre core calibrating element 300 aim at, for example, shown in Fig. 3 along in the cut-open view of horizontal fore-and-aft plane, between the fibre core 302 center of the fibre core 32 center of target optical fiber 30 and high precision fibre core calibrating element 300, just there is a deviation △ e.

Fig. 4 shows according to the schematic diagram of the optical vision system of the calibration system of the embodiment of an exemplary of the present utility model; Fig. 5 A demonstration utilizes the optical vision system shown in Fig. 4 along first direction (the direction X shown in Fig. 4, it roughly becomes 45 degree with respect to horizontal fore-and-aft plane), target optical fiber and high precision fibre core calibrating element to be carried out the schematic diagram of optical imagery; Fig. 5 B demonstration utilizes the optical vision system shown in Fig. 4 along second direction (the direction Y shown in Fig. 4, it roughly becomes 135 degree with respect to horizontal fore-and-aft plane), target optical fiber and high precision fibre core calibrating element to be carried out the schematic diagram of optical imagery.

Shown in Fig. 5 A along in the longitudinal sectional view of the first direction vertical with the central axis of high precision alignment guide element 100 (the direction X in Fig. 4), between the fibre core 32 center of target optical fiber 30 and the fibre core 302 center of high precision fibre core calibrating element 300, just there is a first deviation e1; Shown in Fig. 5 B along in the longitudinal sectional view of the second direction vertical with the central axis of high precision alignment guide element 100 (the direction Y in Fig. 4), between the fibre core 32 center of target optical fiber 30 and the fibre core 302 center of high precision fibre core calibrating element 300, there is a second deviation e2.

Therefore, for accurate aligning the between the fibre core 32 center of realize target optical fiber 30 and the fibre core 302 center of high precision fibre core calibrating element 300, in the utility model, under the guiding of optical vision system, utilize the position of mobile system active adjustment target optical fiber 30 in the through hole 31 of target lock pin 20, until the first deviation e1 and the second deviation e2 are zero or in predetermined scope, for example, preset range can be-0.001mm to 0.001mm, preferably, preset range can be-0.3 μ m to 0.3 μ m.Like this, just make the fibre core 32 center of target optical fiber 30 and the fibre core 302 center of high precision fibre core calibrating element 300 aim at, thereby the fibre core 32 center of target optical fiber 30 and guide hole 21 center take target lock pin 20 are aimed at as the definite theoretical center of positioning datum.

Fig. 5 A and Fig. 5 B have shown respectively between the center of fibre core 32 of target optical fiber 30 and the center of the fibre core 302 of high precision fibre core calibrating element 300 two error e 1 and the e2 in two orthogonal two dimensional surfaces.Therefore, between the center of the fibre core 302 of the center of the fibre core 32 of target optical fiber 30 and high precision fibre core calibrating element 300, the error e in solid space can obtain according to aforementioned two error e 1 and e2.Particularly, can obtain error e according to formula (1) below:

e = \sqrt{e_{1}^{2} + e_{2}^{2}} - - - (1)

Therefore, for accurate aligning the between the fibre core 32 center of realize target optical fiber 30 and the fibre core 302 center of high precision fibre core calibrating element 300, in the embodiment of another exemplary of the present utility model, under the guiding of optical vision system, utilize the position of mobile system active adjustment target optical fiber 30 in the through hole 31 of target lock pin 20, until error e is zero or in predetermined scope, for example, preset range can be-0.001mm to 0.001mm, preferably, preset range can be-0.3um to 0.3um.

A specific embodiment of the position of active adjustment target optical fiber 30 in the through hole 31 of target lock pin 20 will be described by Fig. 4 to Fig. 8 in detail below.

As shown in Figure 4, optical vision system at least comprises: the first imaging device 411,412, for the first direction X photographic subjects optical fiber 30 along vertical with the central axis of high precision alignment guide element 100 and the first image of high precision fibre core calibrating element 300; The second imaging device 421,422, for the second direction Y photographic subjects optical fiber 30 along vertical with the central axis of high precision alignment guide element 100 and the second image of high precision fibre core calibrating element 300, second direction Y is perpendicular to first direction X; And image recognition apparatus is (not shown, can be computing machine), for identifying the center of fibre core 32 of target optical fiber 30 and the center of the fibre core 302 of high precision fibre core calibrating element 300 of the first image, and for identifying the center of fibre core 32 of target optical fiber 30 and the center of the fibre core 302 of high precision fibre core calibrating element 300 of the second image.

Particularly, as shown in Figure 4, in the embodiment of an exemplary of the present utility model, the first imaging device 411,412 comprises: the first light source 411, is arranged on the side along first direction X of high precision alignment guide element 100; With the first video camera 412, be relatively arranged on the opposite side along first direction X of high precision alignment guide element 100 with the first light source 411.The second imaging device 421,422 comprises: secondary light source 421, is arranged on the side along second direction Y of high precision alignment guide element 100; With the second video camera 422, be relatively arranged on the opposite side along second direction Y of high precision alignment guide element 100 with secondary light source 421.

Note that at the utility model and be not limited to illustrated embodiment, optical vision system can also comprise and similar the 3rd imaging device of the first and second imaging devices, the 4th imaging device or more imaging device.

As shown in Figure 5A, protrude from the end face of target lock pin 20 end of target optical fiber 30, and protrude and relative with the end part interval of target optical fiber 30 from the end face of high-precision calibration lock pin 200 end of high precision fibre core calibrating element 300.The first imaging device 411,412 is along the image of first direction X photographic subjects optical fiber 30 end relative with the interval of high precision fibre core calibrating element 300, thereby obtains first image as shown in Figure 6.

According to the first image shown in Fig. 6, can clearly be seen that, in the first image, fibre core (shinny part) the 32 center (as shown in the dotted line in Fig. 6) of target optical fiber 30 and fibre core (shinny part) 302 center (as shown in the dotted line in Fig. 6) misalignment of high precision fibre core calibrating element 300, between there is a deviation e1.It should be noted that, because the material of fibre core is different from clad, therefore, can directly clearly distinguish fibre core and clad according to the image of taking.If needed, also can process the first image with image processing system, make the border of fibre core more outstanding and be easier to identify.

Like this, mobile system can be under the guiding of optical vision system the position of active adjustment target optical fiber 30 in the through hole 31 of target lock pin 20, until according to the first image and the second image detection to the fibre core 32 of target optical fiber 30 and the fibre core 302 of high precision fibre core calibrating element 300 between deviation be zero or in predetermined scope.

For example, Fig. 7 is presented under the guiding of optical vision system the fibre core 32 center (as shown in the dotted line in Fig. 7) of target optical fiber 30 is initiatively moved into and aims at image afterwards with the fibre core 302 center (as shown in the dotted line in Fig. 7) of high precision fibre core calibrating element 300.

In order to move the high-precision position of realize target optical fiber 30, in an embodiment of the present utility model, mobile system comprises: and mechanical arm (not shown, for example, multi-freedom robot), there is the fibre clip for clamping target optical fiber 30; And closed-loop feedback control system, the position of fibre clip is regulated until error is zero or in predetermined scope for the error between the center of fibre core 32 of target optical fiber 30 and the center of the fibre core 302 of high precision fibre core calibrating element 300 that detect according to optical vision system.

Fig. 8 show according to the embodiment of an exemplary of the present utility model for controlling the schematic diagram of closed loop position feedback control system of fibre clip of mechanical arm.

As shown in Figure 8, whole closed loop position feedback control system can comprise input media, be arranged on the fibre clip on mechanical arm movably, drive unit, control device and the pick-up unit being made up of optical vision system etc. that driving device hand moves.Because position closed loop feedback control system belongs to classical control method, no longer it is described in more details here.

In the embodiment of another exemplary of the present utility model, high precision alignment guide element 100 can be integral with high-precision calibration lock pin 200.Similarly, high precision fibre core calibrating element 300 also can be integral with high-precision calibration lock pin 200.

In the embodiment of another exemplary of the present utility model, the high precision alignment guide hole 201 center of the guide hole 21 center of target lock pin 20 and high-precision calibration lock pin 200 can be identified by aforementioned optical vision system, and utilize and control and the guide hole 21 center of mobile system active alignment target lock pin 20 and the high precision alignment guide hole 201 center of high-precision calibration lock pin 200 under the guiding of optical vision system, and do not adopt aforementioned high precision alignment guide element 100 to carry out both alignings.For example, the position that can utilize control and mobile system active adjustment target lock pin 20 and/or high-precision calibration lock pin 200 under the guiding of optical vision system, aims at the guide hole 21 center of target lock pin 20 and the high precision alignment guide hole 201 center of high-precision calibration lock pin 200.

According to another aspect of the present utility model, also provide a kind of for calibration target optical fiber 30 calibration steps in the position of the through hole 31 of target lock pin 20, comprise the steps:

High-precision calibration lock pin 200, high precision alignment guide element 100 and the high precision fibre core calibrating element 300 with high precision alignment guide hole 201 are provided, and being centrally located in of the fibre core 302 of high precision fibre core calibrating element 300 is the definite theoretical center place of positioning datum take high precision alignment guide hole 201 center;

With the center of the guide hole 21 of high precision alignment guide element 100 calibration target lock pins 20, the guide hole 21 center of target lock pin 20 is aimed at high precision alignment guide hole 201 center; With

The position of active adjustment target optical fiber 30 in the through hole 31 of target lock pin 20 under the guiding of optical vision system, aims at the fibre core 32 center of target optical fiber 30 and the fibre core 302 center of high precision fibre core calibrating element 300.

According to another aspect of the present utility model, a kind of method of manufacturing fiber stub assembly is also provided, fiber stub assembly comprises lock pin 20 and is arranged in the optical fiber 30 of the through hole 31 of lock pin 20, comprises the steps:

Utilize such alignment system or calibration steps to calibrate the position in the through hole 31 of lock pin 20 optical fiber 30, the fibre core 32 center of optical fiber 30 and guide hole 21 center take lock pin 20 are aimed at as the definite theoretical center of positioning datum; With

Utilize glue or equivalent curable body that optical fiber 30 is fixed in the through hole of lock pin 20.

According to another aspect of the present utility model, a kind of fiber stub assembly is also provided, comprise lock pin 20 and be arranged in the optical fiber 30 of the through hole 31 of lock pin 20, wherein, fiber stub assembly utilizes preceding method to make.

According to another aspect of the present utility model, a kind of joints of optical fibre are also provided, comprising:

Housing; With

Insert the fiber stub assembly in housing,

Wherein, fiber stub assembly is aforementioned fiber stub assembly.

According to another aspect of the present utility model, a kind of calibration system is also provided, the position for calibration target optical fiber 30 at the through hole 31 of target lock pin 20, wherein, calibration system comprises:

High precision fibre core calibrating element 300, the definite theoretical center place of the positioning datum that is centrally located in based target lock pin 20 of the fibre core 302 of high precision fibre core calibrating element 300;

Optical vision system, for identifying the center of fibre core 32 of target optical fiber 30 and the center of the fibre core 302 of high precision fibre core calibrating element 300; With

Mobile system, in the position of the through hole 31 of target lock pin 20, aims at the fibre core 32 center of target optical fiber 30 and the fibre core 302 center of high precision fibre core calibrating element 300 for active adjustment target optical fiber 30 under the guiding of optical vision system.

Provide high precision fibre core calibrating element 300, the definite theoretical center place of the positioning datum that is centrally located in based target lock pin 20 of the fibre core 302 of high precision fibre core calibrating element 300; With

According to another aspect of the present utility model, a kind of calibration system is also provided, the position for calibration target optical fiber 30 at the through hole 31 of target lock pin 20, is characterized in that, described calibration system comprises:

There is the high-precision calibration lock pin 200 of high precision alignment guide hole 201;

High precision fibre core calibrating element 300, being centrally located in of the fibre core 302 of described high precision fibre core calibrating element 300 is the definite theoretical center place of positioning datum take high precision alignment guide hole 201 center;

Optical vision system, for identifying the center of the center of high precision alignment guide hole 201 and the guide hole 21 of target lock pin 20, and for identifying the center of fibre core 32 of target optical fiber 30 and the center of the fibre core 302 of corresponding high precision fibre core calibrating element 300; With

Control and mobile system, for guide hole 21 center and the high precision alignment guide hole 201 center of active alignment target lock pin 20 under the guiding of optical vision system, and for active adjustment target optical fiber 30 under the guiding of optical vision system in the position of the through hole 31 of target lock pin 20, the fibre core 32 center of target optical fiber 30 is aimed at the fibre core 302 center of corresponding high precision fibre core calibrating element 300, thereby make the guide hole 21 center take target lock pin 20 of being centrally located in of fibre core 32 of target optical fiber 30 as the definite theoretical center place of positioning datum.

According to another aspect of the present utility model, also provide a kind of for calibration target optical fiber the calibration steps in the position of the through hole of target lock pin, comprise the steps:

High precision fibre core calibrating element 300 and the high-precision calibration lock pin 200 with high precision alignment guide hole 201 are provided, and being centrally located in of the fibre core 302 of described high precision fibre core calibrating element 300 is the definite theoretical center place of positioning datum take high precision alignment guide hole 201 center;

The guide hole 21 center of active alignment target lock pin 20 and high precision alignment guide hole 201 center under the guiding of optical vision system; With

The utility model compared with prior art, has been abandoned and has been manufactured single mode and multimode optical fiber connector by the lock pin of distinguishing different accuracy specification in prior art.

Especially, in the time that needs are made low-loss or ultra-low-loss fiber connector, the method that existing technical staff uses is that the accuracy specification by improving lock pin (dwindles the through-hole aperture of lock pin, make the through-hole diameter of lock pin and the diameter of optical fiber mate as far as possible, and the center and concentricity based on the definite theoretical center of guide hole of improving the fibre core of optical fiber) realize the target of ultra-low loss, the distinct disadvantage of doing is like this that one, means a kind of expensive; They are two years old, because ultraprecise lock pin through hole becomes less, and the variation that the actual outside diameter of optical fiber also exists batch, it for wearing fibre (through whole lock pin through hole), is a challenge greatly, cause disconnected fine probability to increase, particularly dark damage can cause the reliability of light connector to reduce; Its three, for manufacturing in batches, always there is some individual eccentric discreteness, as long as occur, the random interworking insertion loss of light interface unit is destroyed, etc.

Simultaneously, compared with the technical scheme of carrying out optical fibre packages coating aligning with use high precision alignment instrument, this technical scheme adopts the mode to fiber core active alignment, and the high precision alignment of fibre core is remained in lock pin by fixing mode, be no longer dependent on the clad diameter of calibrating first optical fiber at optical fiber processed and/or fibre core, the bias of fibre core and clad, state (the angle of fiber end face, angle orientation, even integrity degree etc. weares and teares) and the impact of other factors on fibre core alignment precision such as clad outside surface clean conditions, thereby there is better the controllability in the positional precision of fiber core processed, predictability, consistance (the precision reproducibility of individuality to individuality), performance and the random interaction (ultralow insertion loss and ultralow random interworking insertion loss) of connector are improved so to greatest extent, meet the demand of optical interconnection of future generation to ultra-low loss or the lossless joints of optical fibre.

It will be appreciated by those skilled in the art that, embodiment described above is exemplary, and those skilled in the art can make improvements, the structure described in various embodiment can be carried out independent assortment in the case of the conflict aspect not recurring structure or principle.

Although by reference to the accompanying drawings the utility model is illustrated, in accompanying drawing, disclosed embodiment is intended to the utility model preferred implementation to carry out exemplary illustration, and can not be interpreted as a kind of restriction of the present utility model.

Although some embodiment of this overall utility model design are shown and explanation, those skilled in the art will appreciate that, in the case of not deviating from the principle and spirit of this overall utility model design, can make a change these embodiment, scope of the present utility model limits with claim and their equivalent.

It should be noted that word " comprises " does not get rid of other element or step, and word " " or " one " do not get rid of multiple.In addition, any element numbers of claim should not be construed as restriction scope of the present utility model.

Claims

1. a calibration system, the position for calibration target optical fiber (30) at the through hole (31) of target lock pin (20), is characterized in that, described calibration system comprises:

There is the calibration lock pin (200) of aligning guide hole (201);

Aim at guide element (100), for making the center and the center aligning of aiming at guide hole (201) of guide hole (21) of target lock pin (20);

Fibre core calibrating element (300), the center that being centrally located in of the fibre core (302) of described fibre core calibrating element (300) aimed at guide hole (201) is the definite theoretical center place of positioning datum;

Optical vision system, for identifying the center of fibre core (32) of target optical fiber (30) and the center of the fibre core (302) of corresponding fibre core calibrating element (300); With

Control and mobile system, for under the guiding of optical vision system active adjustment target optical fiber (30) in the position of the through hole (31) of target lock pin (20), the center of the fibre core (32) of target optical fiber (30) is aimed at the center of the fibre core (302) of corresponding fibre core calibrating element (300), thereby made the center take the guide hole (21) of target lock pin (20) of being centrally located in of fibre core (32) of target optical fiber (30) as the definite theoretical center place of positioning datum.

2. calibration system according to claim 1, is characterized in that,

Described target lock pin (20) has multiple through holes (31), and in each through hole (31), holds respectively a root object optical fiber (30); And

Described calibration system comprises and many root objects optical fiber (30) many fibre core calibrating elements (300) one to one, for calibrating respectively the position of every root object optical fiber (30) at through hole (31) separately.

3. calibration system according to claim 2, is characterized in that,

Described many fibre core calibrating elements (300) are arranged in a line or multirow, and in every a line, the spacing between the center of wantonly two adjacent fibre core calibrating elements (300) is identical.

4. calibration system according to claim 2, is characterized in that,

Described aligning guide element (100) be fixed on calibration lock pin (200) aligning guide hole (201) in or with calibration lock pin (200) integral.

5. calibration system according to claim 2, is characterized in that,

Described fibre core calibrating element (300) be fixed on calibration lock pin (200) through hole in or with calibration lock pin (200) integral.

6. according to the calibration system described in claim 4 or 5, it is characterized in that,

Described aligning guide element (100) is register pin, and

Insert respectively in the guide hole of calibration lock pin (200) and target lock pin (20) at the two ends of described register pin.

7. calibration system according to claim 6, is characterized in that, described optical vision system at least comprises:

The first imaging device (411,412), for first direction (X) the photographic subjects optical fiber (30) along vertical with the central axis of aiming at guide element (100) and the first image of fibre core calibrating element (300);

The second imaging device (421,422), for second direction (Y) the photographic subjects optical fiber (30) along vertical with the central axis of aiming at guide element (100) and the second image of fibre core calibrating element (300), described second direction (Y) is perpendicular to first direction (X); With

Image recognition apparatus, for identifying the center of fibre core (32) of target optical fiber (30) and the center of the fibre core (302) of fibre core calibrating element (300) of the first image, and for identifying the center of fibre core (32) of target optical fiber (30) and the center of the fibre core (302) of fibre core calibrating element (300) of the second image.

8. calibration system according to claim 7, is characterized in that, described the first imaging device (411,412) comprising:

The first light source (411), is arranged on the side along first direction (X) of aiming at guide element (100); With

The first video camera (412), is relatively arranged on the first light source (411) opposite side along first direction (X) of aiming at guide element (100).

9. calibration system according to claim 8, is characterized in that, described the second imaging device (421,422) comprising:

Secondary light source (421), is arranged on the side along second direction (Y) of aiming at guide element (100); With

The second video camera (422), is relatively arranged on secondary light source (421) opposite side along second direction (Y) of aiming at guide element (100).

10. calibration system according to claim 7, is characterized in that,

Described image recognition apparatus comprises the image processing system that the first image and the second image are processed.

11. calibration systems according to claim 9, is characterized in that,

Protrude from the end face of target lock pin (20) end of described target optical fiber (30), and protrude and relative with the end part interval of described target optical fiber (30) from the end face of calibration lock pin (200) end of described fibre core calibrating element (300).

12. calibration systems according to claim 11, is characterized in that,

The image of the end that described the first imaging device (412) is relative with the interval of fibre core calibrating element (300) with the second imaging device (422) photographic subjects optical fiber (30).

13. calibration systems according to claim 11, is characterized in that, described mobile system comprises:

Mechanical arm, has the fibre clip for clamping target optical fiber (30); With

Closed-loop feedback control system, regulates the position of fibre clip until described error is zero or in predetermined scope for the error between the center of fibre core (32) of target optical fiber (30) and the center of the fibre core (302) of fibre core calibrating element (300) that detect according to optical vision system.

14. calibration systems according to claim 13, is characterized in that, described preset range is-0.001mm to 0.001mm.

15. calibration systems according to claim 14, is characterized in that, described preset range is-0.3um to 0.3um.

16. 1 kinds of calibration systems, the position for calibration target optical fiber (30) at the through hole (31) of target lock pin (20), is characterized in that, described calibration system comprises:

Fibre core calibrating element (300), the definite theoretical center place of the positioning datum that is centrally located in based target lock pin (20) of the fibre core (302) of described fibre core calibrating element (300);

Optical vision system, for identifying the center of fibre core (32) of target optical fiber (30) and the center of the fibre core (302) of fibre core calibrating element (300); With

Mobile system, in the position of the through hole (31) of target lock pin (20), the center of fibre core (32) of target optical fiber (30) and the center of the fibre core (302) of fibre core calibrating element (300) are aimed at for active adjustment target optical fiber (30) under the guiding of optical vision system.

17. 1 kinds of calibration systems, the position for calibration target optical fiber (30) at the through hole (31) of target lock pin (20), is characterized in that, described calibration system comprises:

There is the calibration lock pin (200) of aligning guide hole (201);

Optical vision system, be used for identifying the center of aiming at the center of guide hole (201) and the guide hole (21) of target lock pin (20), and for identifying the center of fibre core (32) of target optical fiber (30) and the center of the fibre core (302) of corresponding fibre core calibrating element (300); With

Control and mobile system, for the center of the guide hole (21) of active alignment target lock pin (20) under the guiding of optical vision system and the center of aligning guide hole (201), and for active adjustment target optical fiber (30) under the guiding of optical vision system the position at the through hole (31) of target lock pin (20), the center of the fibre core (32) of target optical fiber (30) is aimed at the center of the fibre core (302) of corresponding fibre core calibrating element (300), thereby make the center take the guide hole (21) of target lock pin (20) of being centrally located in of fibre core (32) of target optical fiber (30) as the definite theoretical center place of positioning datum.