CN104677294A - Method for manufacturing seven-core fiber grating micro-scale measurement probe based on self-assembly principle - Google Patents
Method for manufacturing seven-core fiber grating micro-scale measurement probe based on self-assembly principle Download PDFInfo
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Abstract
The invention provides a method for manufacturing a seven-core fiber grating micro-scale measurement probe based on a self-assembly principle, and belongs to the technical field of precision instrument manufacture. The method is that the diameter of single-die optical fibers subjected to engraving of a fiber grating is reduced by a mechanical processing or hydrofluoric acid fiber corroding method; seven diameter-reduced single-mode fibers subjected to engraving of the fiber grating pass through fine tubes with inner taper angles, and the lower ends of the single-mode fibers are immersed into low-viscosity UV gel; self-assembly is performed according to the capillary phenomenon to form the most compact regular hexagonal structure; the seven diameter-reduced and self-assembled single-mode fibers subjected to engraving of the fiber grating are subjected to UV glue solidifying to obtain a seven-core fiber grating; the end surface of the seven-core fiber grating is ground through a fiber grinding machine; a spherical needle point is processed at the grinded end of the seven-core fiber grating by a fused fiber method or a microsphere installation method, so as to finish the processing of the seven-core fiber grating probe. The fiber grating is free of signal crosstalk, low in cost and low in loss.
Description
Technical field
The invention belongs to exact instrument manufacturing technology field, particularly a kind of seven core fibre grating micro-scale measurement probe manufacturing methods based on self assembly principle.
Background technology
Along with the development of aerospace industry, auto industry, electronics industry and sophisticated industry etc., for the demand sharp increase of accurate micro-member.Owing to being subject to the restriction of space scale and micro-member capture-effect to be measured and measuring the impact of contact force, the precision measurement of micro-member yardstick is more and more difficult to realize, especially the degree of depth measuring small inner chamber component is difficult to improve, and these become " bottleneck " of restriction industry development already.Measuring to realize smaller szie, increasing and fathom, the most widely used way is exactly that the inner chamber using elongated probe to go deep into micro-member detects, and is measured the small inside dimension on different depth by the mode aiming at sender.Therefore, the precision measurement method of current micro-member size is mainly based on the detection mode of coordinate measuring machine in conjunction with aiming triggering type probe, due to the development comparative maturity of measurement of coordinates machine technology, can provide accurate three-dimensional space motion, therefore the detection mode of aiming triggering type probe becomes the key of micro-member size detection system.And, fiber grating probe, with its sensor and the discrete advantage of measuring system, can overcome capture-effect completely, breaks through and fathoms to the restriction of probe, simultaneously fiber grating probe has miniaturization, the advantage such as anti-interference concurrently, is suitable for very much making micro-scale measurement probe.
At present, the micro-scale measurement probe based on fiber grating design comprises following several:
2011, China's Harbin Institute of Technology Cui Ji culture and education is awarded and is proposed a kind of pore size measurement mechanism based on FBG Bending and method with the people such as Yang Fuling, the method utilizes fiber grating probe and light source, pick-up unit to form and aims at triggering system, coordinate two-frequency laser interferometer measuring motion, the micro-pore diameter of different cross section can be obtained.When the fiber grating probe of the method touches and surveys distortion, the main stress of probe does not act on fiber grating, and the resolution of system is very low, do not have three-dimensional measurement ability, and performance is difficult to further raising.
2014, China's Harbin Institute of Technology Cui Ji culture and education awards the micro-scale measurement device and method proposed with the people such as Feng Kunpeng based on multi-core fiber grating, the method devises special multi-core fiber grating probe, probe is fully acted on fiber grating touching with workpiece the stress produced in survey process, improving a lot based on the pore size measurement mechanism of FBG Bending and the detection resolving power of method comparatively; And different multi-core fiber fibre core distributed architectures can realize two dimension, three-dimensional decoupling zero of surveying, and has good measurement character.But the method inscribes fiber grating on special multi-core fiber, on the one hand, the inscription cross-interference issue between fibre core and fibre core can be brought in multi-core fiber scribing process; On the other hand, the multi-core fiber of purchase makes probe and causes probe structure parameter can not autonomous Design.
In sum, in the existing micro-scale measurement probe based on fiber grating design, multi-core fiber grating probe is high with its resolving power, the feature of multidimensional measure decoupling zero by extensive concern, there is good application prospect, but mainly there is following problem in existing multi-core fiber grating probe:
1. consider the cost of manufacture problem of multi-core fiber grating probe, multi-core fiber can only select the peculiar model of optical fiber production producer, can not require that the multi-core fiber of design special construction is to be used for making multi-core fiber grating probe according to measuring.
2. when making multi-core fiber grating probe, need to utilize excimer laser phase masks to inscribe fiber grating on multi-core fiber, the fibre core spacing of multi-core fiber only has tens microns, can affect when the fibre core of a multi-core fiber is inscribed fiber grating and close on fibre core, produce and inscribe crosstalk, the multi-core fiber grating probe finally made, the fiber grating reflectivity in each fibre core is low and spectrum distortion serious, has a strong impact on the accuracy of measurement.
3. multi-core fiber grating probe in use, need to obtain the reflectance spectrum of every root fibre core inner fiber grating in multi-core fiber, therefore each multi-core fiber grating probe needs installation multi-core fiber fan-out joint to realize being coupled of multi-core fiber every root fibre core and outside single-mode fiber, but this joint price is high, light loss large, is not suitable for the popularization of multi-core fiber grating probe in micro-scale measurement, application.
Summary of the invention
The object of the invention is to solve multi-core fiber structure in multi-core fiber grating probe application to limit by manufacturer, inscribe crosstalk and the large problem of fan-out joint light loss, propose a kind of seven core fibre grating micro-scale measurement probe manufacturing methods based on self assembly principle, adopt the mode of self assembly that the general single mode fiber after inscription fiber grating is made seven core core fibre grating micro-scale measurement probes, and can according to measurement demand, design the structure of seven core fibre grating micro-scale measurement probes, and employing this method ensure that each channel of seven core fibre grating micro-scale measurement probes made is connected with a general single mode fiber, without the need to fan-out joint, reach structural design flexible, spectral signal is good, light loss is little, the object that cost is low.
Technical scheme of the present invention is: a kind of seven core fibre grating micro-scale measurement probe manufacturing methods based on self assembly principle, said method comprising the steps of:
(1). reduce the single mode fiber diameters after inscribing fiber grating
Getting seven length is that 100 ~ 1000mm inscribes the single-mode fiber after fiber grating, fiber grating grid region is in the position of one end 30 ~ 50mm of the single-mode fiber after inscribing fiber grating, fiber grating grid region length is 10 ~ 20mm, be that 50 ~ 80mm coat partly divests by the tip length of single-mode fiber near fiber grating grid region after inscription fiber grating, single-mode fiber after adopting the method for mechanical treatment to reduce inscription fiber grating afterwards divests the diameter of coat part: by stretching for the single-mode fiber inscribed after fiber grating, the stationary installation that two ends are fixed on synchronous rotation motor makes the pivot center of single-mode fiber after inscribing fiber grating overlap with the pivot center of synchronous rotation motor, the runner of a parcel abrasive sheet is housed above the single-mode fiber rotation axis after inscribing fiber grating, the runner of parcel abrasive sheet is near also contacting the single-mode fiber after inscribing fiber grating and divesting coat part uniform motion repeatedly along the single-mode fiber after inscription fiber grating, carry out grinding, adopt microscopic observation system to detect the diameter that the single-mode fiber after inscribing fiber grating divests coat part simultaneously, when the diameter that the single-mode fiber after inscription fiber grating divests coat part is decreased to 50 ~ 100 μm, stop grinding, after fiber grating grid region on single-mode fiber after inscription fiber grating after being reduced by diameter with optical fiber cutter, the single-mode fiber of 30 ~ 50mm cuts, the end of the single-mode fiber after the inscription fiber grating after making fiber grating grid region be in diameter reduction, and to protect fiber grating grid region length be 5 ~ 10mm, be positioned over afterwards in the supersonic cleaning machine that absolute ethyl alcohol is housed and wash 5 ~ 20 minutes,
(2). the self assembly of the single-mode fiber after the inscription fiber grating after seven diameters reduce
Prepare length 10 ~ 30mm, there is interior cone angle one end, internal diameter is the tubule of (50 ~ 100 μm) × 3+ (1 ~ 5) μm, single-mode fiber after inscription fiber grating after being reduced by seven diameters after (1) step process inserts from cone angle in tubule one end, ensures that the single-mode fiber end after the inscription fiber grating after seven diameters reductions is concordant and exceeds tubule one end 5 ~ 10mm; Vertical secure thin tube single-mode fiber after inscription fiber grating after being reduced by seven diameters exceeding tubule one end are immersed in and viscosity is housed is less than 3 ~ 6mm in the glass cylinder of the ultraviolet glue of 100cp, low viscosity ultraviolet glue moves upward along the single-mode fiber after the inscription fiber grating after seven diameters reductions under capillary forces, and making the single-mode fiber after the inscription fiber grating after seven diameters reductions tightly near forming the compactest regular hexagon structure, the single-mode fiber after the inscription fiber grating after reducing seven diameters carries out self assembly; After 5 ~ 15 minutes, single-mode fiber after inscription fiber grating after tubule and seven diameters wherein after self assembly being reduced takes out from ultraviolet glue, ensure that the single-mode fiber after the inscription fiber grating after seven diameters reductions after self assembly does not misplace, and the single-mode fiber after inscription fiber grating after reducing seven diameters after exceeding the self assembly of tubule one end with ultraviolet glue curing light source irradiates and within 1 ~ 10 minute, completes ultraviolet glue solidification, form seven core fibre gratings; Thereafter, cone angle place instillation heat-curable glue in tubule one end also fills up interior cone angle, is placed on by the tubule being inserted with seven core fibre gratings on 50 ~ 180 DEG C of constant temperature electric heaters and heats 10 ~ 60 minutes, the heat-curable glue in the interior cone angle of tubule one end is solidified;
(3). the end surface grinding of seven core fibre gratings
The tubule being inserted with seven core fibre gratings in (2) step is fixed on optic fiber polishing machine, adjustment tubule height, seven core fibre gratings are contacted with the abrasive sheet on optic fiber polishing machine, according to the lapping mode of FC/PC fibre-optical splice, its end face is ground afterwards, and confirm smooth, flawless and incomplete with endface viewing device, stop the end surface grinding of seven core fibre gratings and with dipping in spirituous dust-free paper by end face wiped clean;
(4). seven core fibre grating end ball needle points after end surface grinding make
Fused optic fiber method: the tubule of seven core fibre grating upper ends after end surface grinding in (3) step is vertically fixed, seven core fibre grating lower ends after regulating tubule height to make end surface grinding are in electric discharge machining apparatus two sparking electrode needle point central lower 0.5 ~ 3mm positions, regulate discharge time and the discharge current of electric discharge machining apparatus, the heat utilizing spark discharge to produce is by the fiber-fuse of seven core fibre grating lower end 0.5 ~ 3mm after end surface grinding, the surface tension of gravity and fused optic fiber is utilized to form a good optical fiber ball, seven core fibre grating lower ends after its cooling after end surface grinding form a spherical needle point of optical fiber, complete the processing of seven core fibre grating end ball needle points after end surface grinding, under an electron microscope the spherical needle point crudy of optical fiber is examined and determine, require that the right alignment of seven core fibre gratings after optical fiber ball needle point and end surface grinding is less than 5 μm, seven core fibre grating diameter ratios after optical fiber ball bubble-free and breakage, optical fiber ball diameter and end surface grinding are more than or equal to 1.2, select seven qualified core fibre grating probes, complete the making of seven core fibre grating probes.
Advantage of the present invention is:
1. adopt the single-mode fiber after inscribing fiber grating to make seven core fibre grating probes, the structural parameters of seven core fibre grating probes can be designed according to measurement demand, as seven core fibre grating probe diameter, length and spherical tip diameter etc.
2. adopt and inscribe the single-mode fiber after fiber grating and make seven core fibre grating probes, avoid directly that on multi-core fiber, inscribe fiber grating brings inscription crosstalk, the seven core fibre grating probes completed have the good feature of spectral signal.
3. adopt the single-mode fiber after inscribing fiber grating to make seven core fibre grating probes, seven core fibre grating probes carry single-mode tail fiber, avoid and use fan-out joint, reduce the cost in seven core fibre grating probes uses and light loss.
Accompanying drawing explanation
Fig. 1 is that the method for mechanical treatment reduces the single mode fiber diameters installation drawing after inscribing fiber grating;
Fig. 2 is the single-mode fiber self assembly installation drawing after inscribing fiber grating after diameter reduces;
Fig. 3 is the cut-open view of the A-A in Fig. 2;
Fig. 4 is capillary structure schematic diagram in Fig. 2;
Fig. 5 is seven core fibre grating end-face grinder figure;
Fig. 6 is that fused optic fiber method forms spherical needle tip device figure;
Fig. 7 is that the method for hydrofluorite fiber optical corrosive process reduces the single mode fiber diameters installation drawing after inscribing fiber grating;
Fig. 8 is the vertical view of Fig. 7;
Fig. 9 is that microballoon Method for Installation forms spherical needle point schematic diagram;
Figure 10 is B portion structure partial schematic diagram in Fig. 9;
In figure: 1. inscribe the single-mode fiber after fiber grating, 2. fiber grating grid region, 3. wrap up the runner of abrasive sheet, 4. synchronous rotation motor, 5. stationary installation, 6. the single-mode fiber after the inscription fiber grating after diameter reduction, 7. tubule, 8. interior cone angle, 9. glass cylinder, 10. ultraviolet glue, 11. 7 core fibre gratings, 12. optic fiber polishing machines, 13. abrasive sheets, seven core fibre grating 15. electrodes after 14. end surface grindings, 16. electric discharge machining apparatus, the spherical needle point of 17. optical fiber, 18. plastic drum lids, 19. Plastic Drums, 20. hydrofluoric acid solutions, the spherical needle point of 21. ruby, 22. levelling benches, 23.V shape groove, 24. six degree of freedom adjusting gears.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present invention is described in detail.
Based on seven core fibre grating micro-scale measurement probe manufacturing methods of self assembly principle, said method comprising the steps of:
(1). reduce the single mode fiber diameters after inscribing fiber grating
Getting seven length is that 100 ~ 1000mm inscribes the single-mode fiber 1 after fiber grating, fiber grating grid region 2 is in the position of one end 30 ~ 50mm of the single-mode fiber 1 after inscribing fiber grating, fiber grating grid region 2 length is 10 ~ 20mm, be that 50 ~ 80mm coat partly divests by the tip length of single-mode fiber 1 near fiber grating grid region 2 after inscription fiber grating, single-mode fiber 1 after adopting the method for mechanical treatment to reduce inscription fiber grating afterwards divests the diameter of coat part: by stretching for the single-mode fiber 1 inscribed after fiber grating, the pivot center of the single-mode fiber 1 in the stationary installation 5 that two ends are fixed on synchronous rotation motor 4 and after making inscription fiber grating overlaps with the pivot center of synchronous rotation motor 4, the runner 3 of a parcel abrasive sheet is housed above single-mode fiber 1 rotation axis after inscribing fiber grating, the runner 3 of parcel abrasive sheet is near also contacting the single-mode fiber 1 after inscribing fiber grating and divesting coat part uniform motion repeatedly along the single-mode fiber 1 after inscription fiber grating, carry out grinding, adopt microscopic observation system to detect the diameter that the single-mode fiber 1 after inscribing fiber grating divests coat part simultaneously, when the diameter that the single-mode fiber 1 after inscription fiber grating divests coat part is decreased to 50 ~ 100 μm, stop grinding, after fiber grating grid region 2 on single-mode fiber 6 after inscription fiber grating after being reduced by diameter with optical fiber cutter, the single-mode fiber of 30 ~ 50mm cuts, the end of the single-mode fiber 1 after the inscription fiber grating after making fiber grating grid region 2 be in diameter reduction, and to protect fiber grating grid region 2 length be 5 ~ 10mm, be positioned over afterwards in the supersonic cleaning machine that absolute ethyl alcohol is housed and wash 5 ~ 20 minutes,
(2). the self assembly of the single-mode fiber after the inscription fiber grating after seven diameters reduce
Prepare length 10 ~ 30mm, there is interior cone angle 8 one end, internal diameter is the tubule 7 of (50 ~ 100 μm) × 3+ (1 ~ 5) μm, single-mode fiber 6 after inscription fiber grating after being reduced by seven diameters after (1) step process inserts from cone angle 8 in tubule 7 one end, ensures that single-mode fiber 6 end after the inscription fiber grating after seven diameters reductions is concordant and exceeds tubule 7 one end 5 ~ 10mm; Vertical secure thin tube 7 single-mode fiber 6 after inscription fiber grating after being reduced by seven diameters exceeding tubule 7 one end are immersed in and viscosity is housed is less than 3 ~ 6mm in the glass cylinder 9 of the ultraviolet glue 10 of 100cp, low viscosity ultraviolet glue 10 moves upward along the single-mode fiber 6 after the inscription fiber grating after seven diameters reductions under capillary forces, and making the single-mode fiber 6 after the inscription fiber grating after seven diameters reductions tightly near forming the compactest regular hexagon structure, the single-mode fiber 6 after the inscription fiber grating after reducing seven diameters carries out self assembly; After 5 ~ 15 minutes, single-mode fiber 6 after inscription fiber grating after tubule 7 and seven diameters wherein after self assembly being reduced takes out from ultraviolet glue, ensure that the single-mode fiber 6 after the inscription fiber grating after seven diameters reductions after self assembly does not misplace, and the single-mode fiber 6 after inscription fiber grating after reducing seven diameters after exceeding tubule 7 one end self assembly with ultraviolet glue 10 curing light source irradiates and within 1 ~ 10 minute, completes ultraviolet glue solidification, form seven core fibre gratings 11; Thereafter, cone angle 8 place instillation heat-curable glue in tubule 7 one end also fills up interior cone angle 8, the tubule 7 being inserted with seven core fibre gratings 11 is placed on 50 ~ 180 DEG C of constant temperature electric heaters and heats 10 ~ 60 minutes, the heat-curable glue in the interior cone angle 8 of tubule 7 one end is solidified;
(3). the end surface grinding of seven core fibre gratings
The tubule 7 being inserted with seven core fibre gratings 11 in (2) step is fixed on optic fiber polishing machine 12, adjustment tubule 7 height, seven core fibre gratings 11 are contacted with the abrasive sheet 13 on optic fiber polishing machine 12, according to the lapping mode of FC/PC fibre-optical splice, its end face is ground afterwards, and confirm smooth, flawless and incomplete with endface viewing device, stop the end surface grinding of seven core fibre gratings 11 and with dipping in spirituous dust-free paper by end face wiped clean;
(4). the processing of seven core fibre grating end ball needle points after end surface grinding
Fused optic fiber method: the tubule 7 of seven core fibre grating 14 upper ends after end surface grinding in (3) step is vertically fixed, seven core fibre grating 14 lower ends after regulating tubule 7 highly to make end surface grinding are in electric discharge machining apparatus 16 two sparking electrode 15 needle point central lower 0.5 ~ 3mm positions, regulate discharge time and the discharge current of electric discharge machining apparatus 16, the heat utilizing spark discharge to produce is by the fiber-fuse of seven core fibre grating 14 lower end 0.5 ~ 3mm after end surface grinding, the surface tension of gravity and fused optic fiber is utilized to form a good optical fiber ball, seven core fibre grating 14 lower ends after its cooling after end surface grinding form a spherical needle point 17 of optical fiber, complete the processing of seven core fibre grating 14 end ball needle points after end surface grinding, under an electron microscope optical fiber spherical needle point 17 crudy is examined and determine, require that the right alignment of seven core fibre gratings 14 after optical fiber spherical needle point 17 and end surface grinding is less than 5 μm, seven core fibre grating 14 diameter ratios after optical fiber ball bubble-free and breakage, optical fiber spherical needle point 17 diameter and end surface grinding are more than or equal to 1.2, select seven qualified core fibre grating probes, complete the processing of seven core fibre grating probes.
In step (1), the processing mode that the diameter reducing the single-mode fiber 1 after inscribing fiber grating also can adopt hydrofluorite to corrode, single-mode fiber 1 after inscribing fiber grating is passed down through the micropore on plastic drum lid 18 and fixes, the hydrofluoric acid solution 20 that volume fraction is 10 ~ 50% is added in Plastic Drum 19, and the end immersion volume fraction making the single-mode fiber 1 after inscription fiber grating divest coat part is 60 ~ 90mm in the hydrofluoric acid solution 20 of 10 ~ 50%, every 20 ~ 30 minutes, the single-mode fiber 1 after inscription fiber grating is taken out from Plastic Drum 7, measure the diameter that the single-mode fiber 1 after inscribing fiber grating divests coat part under an electron microscope, when the diameter inscribing the single-mode fiber 1 after fiber grating and divest coat part be corroded be decreased to 50 ~ 100 μm time, single-mode fiber 6 after inscription fiber grating after being reduced by diameter takes out and puts into the glass tank that acetone is housed from Plastic Drum 19, the end that single-mode fiber 6 after inscription fiber grating after diameter is reduced divests coat part immerses 80 ~ 90mm in acetone, does 10 ~ 30 minutes sofening treatment, after fiber grating grid region 2 on single-mode fiber 6 after inscription fiber grating after being reduced by diameter with optical fiber cutter, the single-mode fiber of 30 ~ 50mm cuts, fiber grating grid region 2 on single-mode fiber 6 after inscription fiber grating after diameter is reduced is in the least significant end of the single-mode fiber 6 after the inscription fiber grating after diameter reduction, and ensure that fiber grating grid region 2 length on the single-mode fiber 6 after inscribing fiber grating is 5 ~ 10mm, afterwards, be positioned in the supersonic cleaning machine that absolute ethyl alcohol is housed and wash 5 ~ 20 minutes.
In step (2), the material of tubule 7 is quartz or metal.
In step (4), also seven core fibre grating 14 ends of microballoon Method for Installation after end surface grinding can be adopted to process a spherical needle point: be horizontally fixed on six degree of freedom adjusting gear 24 by the tubule 7 of seven core fibre grating 14 upper ends after end surface grinding in (3) step, and one end dispensing needle head after grinding smears ultraviolet glue 10, manual adjustments six degree of freedom adjusting gear 24 under visual surveillance system, after making end surface grinding, seven core fibre gratings 14 smear one end of ultraviolet glue 10 close to the spherical needle point 21 of ruby fixing in V-type groove 23 on levelling bench 22, seven core fibre gratings 14 after end surface grinding are after aiming at ruby spherical needle point 21 center, seven core fibre gratings 14 after end surface grinding are advanced to contact with the spherical needle point 21 of ruby, irradiate 1 ~ 10 minute with ultraviolet glue curing light source butt contact afterwards, complete the processing of seven core fibre grating 14 end ball needle points after end surface grinding, complete the processing of seven core fibre grating probes.
Seven core fibre grating 14 diameter ratios after ruby spherical needle point 21 diameter and end surface grinding are more than or equal to 1.2.
Based on the innovation point of seven core fibre grating micro-scale measurement probe manufacturing methods of self assembly principle and Advantageous Effects be: adopt the single-mode fiber after inscribing fiber grating to make seven core fibre grating probes, avoid and directly on multi-core fiber, inscribe fiber grating and bring inscription crosstalk, the seven core fibre grating probes completed have the good feature of spectral signal, can improve the signal to noise ratio (S/N ratio) of seven core fibre grating probe output signal; The present invention can design the structural parameters of seven core fibre grating probes according to measurement demand, as the diameter etc. of the diameter of seven core fibre grating probes, length and spherical needle point, have design, make feature flexibly; The seven core fibre grating probes that the present invention makes carry single-mode tail fiber, avoid using multi-core fiber fan-out joint, significantly reduce the cost in seven core fibre grating probes uses and light loss, be conducive to seven promotion and application of core fibre grating probe in micro-scale measurement field.
Claims (5)
1., based on seven core fibre grating micro-scale measurement probe manufacturing methods of self assembly principle, it is characterized in that: said method comprising the steps of:
(1). reduce the single mode fiber diameters after inscribing fiber grating
Getting seven length is that 100 ~ 1000mm inscribes the single-mode fiber after fiber grating, fiber grating grid region is in the position of one end 30 ~ 50mm of the single-mode fiber after inscribing fiber grating, fiber grating grid region length is 10 ~ 20mm, be that 50 ~ 80mm coat partly divests by the tip length of single-mode fiber near fiber grating grid region after inscription fiber grating, single-mode fiber after adopting the method for mechanical treatment to reduce inscription fiber grating afterwards divests the diameter of coat part: by stretching for the single-mode fiber inscribed after fiber grating, the stationary installation that two ends are fixed on synchronous rotation motor makes the pivot center of single-mode fiber after inscribing fiber grating overlap with the pivot center of synchronous rotation motor, the runner of a parcel abrasive sheet is housed above the single-mode fiber rotation axis after inscribing fiber grating, the runner of parcel abrasive sheet is near also contacting the single-mode fiber after inscribing fiber grating and divesting coat part uniform motion repeatedly along the single-mode fiber after inscription fiber grating, carry out grinding, adopt microscopic observation system to detect the diameter that the single-mode fiber after inscribing fiber grating divests coat part simultaneously, when the diameter that the single-mode fiber after inscription fiber grating divests coat part is decreased to 50 ~ 100 μm, stop grinding, after fiber grating grid region on single-mode fiber after inscription fiber grating after being reduced by diameter with optical fiber cutter, the single-mode fiber of 30 ~ 50mm cuts, the end of the single-mode fiber after the inscription fiber grating after making fiber grating grid region be in diameter reduction, and to protect fiber grating grid region length be 5 ~ 10mm, be positioned over afterwards in the supersonic cleaning machine that absolute ethyl alcohol is housed and wash 5 ~ 20 minutes,
(2). the self assembly of the single-mode fiber after the inscription fiber grating after seven diameters reduce
Prepare length 10 ~ 30mm, there is interior cone angle one end, internal diameter is the tubule of (50 ~ 100 μm) × 3+ (1 ~ 5) μm, single-mode fiber after inscription fiber grating after being reduced by seven diameters after (1) step process inserts from cone angle in tubule one end, ensures that the single-mode fiber end after the inscription fiber grating after seven diameters reductions is concordant and exceeds tubule one end 5 ~ 10mm; Vertical secure thin tube single-mode fiber after inscription fiber grating after being reduced by seven diameters exceeding tubule one end are immersed in and viscosity is housed is less than 3 ~ 6mm in the glass cylinder of the ultraviolet glue of 100cp, low viscosity ultraviolet glue moves upward along the single-mode fiber after the inscription fiber grating after seven diameters reductions under capillary forces, and making the single-mode fiber after the inscription fiber grating after seven diameters reductions tightly near forming the compactest regular hexagon structure, the single-mode fiber after the inscription fiber grating after reducing seven diameters carries out self assembly; After 5 ~ 15 minutes, single-mode fiber after inscription fiber grating after tubule and seven diameters wherein after self assembly being reduced takes out from ultraviolet glue, ensure that the single-mode fiber after the inscription fiber grating after seven diameters reductions after self assembly does not misplace, and the single-mode fiber after inscription fiber grating after reducing seven diameters after exceeding the self assembly of tubule one end with ultraviolet glue curing light source irradiates and within 1 ~ 10 minute, completes ultraviolet glue solidification, form seven core fibre gratings; Thereafter, cone angle place instillation heat-curable glue in tubule one end also fills up interior cone angle, is placed on by the tubule being inserted with seven core fibre gratings on 50 ~ 180 DEG C of constant temperature electric heaters and heats 10 ~ 60 minutes, the heat-curable glue in the interior cone angle of tubule one end is solidified;
(3). the end surface grinding of seven core fibre gratings
The tubule being inserted with seven core fibre gratings in (2) step is fixed on optic fiber polishing machine, adjustment tubule height, seven core fibre gratings are contacted with the abrasive sheet on optic fiber polishing machine, according to the lapping mode of FC/PC fibre-optical splice, its end face is ground afterwards, and confirm smooth, flawless and incomplete with endface viewing device, stop the end surface grinding of seven core fibre gratings and with dipping in spirituous dust-free paper by end face wiped clean;
(4). seven core fibre grating end ball needle points after end surface grinding make
Fused optic fiber method: the tubule of seven core fibre grating upper ends after end surface grinding in (3) step is vertically fixed, seven core fibre grating lower ends after regulating tubule height to make end surface grinding are in electric discharge machining apparatus two sparking electrode needle point central lower 0.5 ~ 3mm positions, regulate discharge time and the discharge current of electric discharge machining apparatus, the heat utilizing spark discharge to produce is by the fiber-fuse of seven core fibre grating lower end 0.5 ~ 3mm after end surface grinding, the surface tension of gravity and fused optic fiber is utilized to form a good optical fiber ball, seven core fibre grating lower ends after its cooling after end surface grinding form a spherical needle point of optical fiber, complete the processing of seven core fibre grating end ball needle points after end surface grinding, under an electron microscope the spherical needle point crudy of optical fiber is examined and determine, require that the right alignment of seven core fibre gratings after optical fiber ball needle point and end surface grinding is less than 5 μm, seven core fibre grating diameter ratios after optical fiber ball bubble-free and breakage, optical fiber ball diameter and end surface grinding are more than or equal to 1.2, select seven qualified core fibre grating probes, complete the making of seven core fibre grating probes.
2. according to claim 1 based on the method for making of seven core fibre grating micro-scale measurement probes of self assembly principle, it is characterized in that: described step (1) reduces the processing mode that the single mode fiber diameters after inscribing fiber grating also can adopt hydrofluorite to corrode: the single-mode fiber after inscribing fiber grating is passed down through the micropore on plastic drum lid and fixes, add in Plastic Drum volume fraction be the hydrofluoric acid solution of 10 ~ 50% and the single-mode fiber after making inscription fiber grating divest coat part end immerse volume fraction be 60 ~ 90mm in the hydrofluoric acid solution of 10 ~ 50%, every 20 ~ 30 minutes, the single-mode fiber after inscription fiber grating is taken out from Plastic Drum, measure the diameter that the single-mode fiber after inscribing fiber grating divests coat part under an electron microscope, when the diameter inscribing the single-mode fiber after fiber grating and divest coat part be corroded be decreased to 50 ~ 100 μm time, single-mode fiber after inscription fiber grating after being reduced by diameter takes out and puts into the glass tank that acetone is housed from Plastic Drum, the end that single-mode fiber after inscription fiber grating after diameter is reduced divests coat part immerses 80 ~ 90mm in acetone, does 10 ~ 30 minutes sofening treatment, after fiber grating grid region on single-mode fiber after inscription fiber grating after being reduced by diameter with optical fiber cutter, the single-mode fiber of 30 ~ 50mm cuts, the least significant end of the single-mode fiber after the inscription fiber grating after making fiber grating grid region be in diameter reduction, and ensure that fiber grating grid region length is 5 ~ 10mm, be positioned over afterwards in the supersonic cleaning machine that absolute ethyl alcohol is housed and wash 5 ~ 20 minutes.
3. according to claim 1 based on the method for making of seven core fibre grating micro-scale measurement probes of self assembly principle, it is characterized in that: in step (2), the material of tubule is quartz or metal.
4. according to claim 1 based on the method for making of seven core fibre grating micro-scale measurement probes of self assembly principle, it is characterized in that: in step (4), also the seven core fibre grating ends of microballoon Method for Installation after end surface grinding can be adopted to process a spherical needle point: be horizontally fixed on six degree of freedom adjusting gear by the tubule of seven core fibre grating upper ends after end surface grinding in (3) step, and one end dispensing needle head after grinding smears ultraviolet glue, manual adjustments six degree of freedom adjusting gear under visual surveillance system, after making end surface grinding, seven core fibre gratings smear one end of ultraviolet glue close to the spherical needle point of ruby fixing in V-type groove on levelling bench, seven core fibre gratings after end surface grinding are after aiming at the spherical needle point center of ruby, seven core fibre gratings after end surface grinding are advanced to contact with the spherical needle point of ruby, irradiate 1 ~ 10 minute with ultraviolet glue curing light source butt contact afterwards, complete the processing of the spherical needle point of seven core fibre gratings, make seven core fibre grating probes.
5. according to claim 4 based on the method for making of seven core fibre grating micro-scale measurement probes of self assembly principle, it is characterized in that: seven core fibre grating diameter ratios after the spherical tip diameter of ruby and end surface grinding are more than or equal to 1.2.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510111283.1A CN104677294B (en) | 2015-03-05 | 2015-03-05 | The seven core fibre grating micro-scale measurement probe manufacturing methods based on self assembly principle |
| US15/503,836 US10481325B2 (en) | 2015-03-05 | 2016-03-02 | Fabrication method of multi-core fiber Bragg grating probe used for measuring structures of a micro part based on the capillary self-assemble technique |
| PCT/CN2016/075270 WO2016138853A1 (en) | 2015-03-05 | 2016-03-02 | Fabrication method of multi-core fiber bragg grating probe used for measuring structures of a micro part based on the capillary self-assemble technique |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016138853A1 (en) * | 2015-03-05 | 2016-09-09 | Harbin Institute Of Technology | Fabrication method of multi-core fiber bragg grating probe used for measuring structures of a micro part based on the capillary self-assemble technique |
| CN109632133A (en) * | 2018-12-30 | 2019-04-16 | 北京信息科技大学 | A kind of temperature measuring device and method based on optical fiber |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110292965A1 (en) * | 2010-06-01 | 2011-12-01 | Mihailov Stephen J | Method and system for measuring a parameter in a high temperature environment using an optical sensor |
| CN102707373A (en) * | 2010-12-10 | 2012-10-03 | 中国航空工业集团公司北京航空材料研究院 | Composite-material braided prefabricated filling belt and preparation method of composite-material braided prefabricated filling belt |
| CN103759641A (en) * | 2014-01-17 | 2014-04-30 | 哈尔滨工业大学 | Three-dimensional microscale measuring device and method based on four-core fiber grating |
| CN103900467A (en) * | 2014-03-20 | 2014-07-02 | 哈尔滨工业大学 | Single-optical fiber coupling ball microscale sensor based on polarization state detection |
| CN103900481A (en) * | 2014-03-20 | 2014-07-02 | 哈尔滨工业大学 | Polarization-maintaining flat optical fiber coupling ball microscale sensor based on polarization state detection |
| CN104215197A (en) * | 2014-03-20 | 2014-12-17 | 哈尔滨工业大学 | Device and method for measuring shapes of spaces on basis of low-reflectivity three-core fiber grating arrays |
-
2015
- 2015-03-05 CN CN201510111283.1A patent/CN104677294B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110292965A1 (en) * | 2010-06-01 | 2011-12-01 | Mihailov Stephen J | Method and system for measuring a parameter in a high temperature environment using an optical sensor |
| CN102707373A (en) * | 2010-12-10 | 2012-10-03 | 中国航空工业集团公司北京航空材料研究院 | Composite-material braided prefabricated filling belt and preparation method of composite-material braided prefabricated filling belt |
| CN103759641A (en) * | 2014-01-17 | 2014-04-30 | 哈尔滨工业大学 | Three-dimensional microscale measuring device and method based on four-core fiber grating |
| CN103900467A (en) * | 2014-03-20 | 2014-07-02 | 哈尔滨工业大学 | Single-optical fiber coupling ball microscale sensor based on polarization state detection |
| CN103900481A (en) * | 2014-03-20 | 2014-07-02 | 哈尔滨工业大学 | Polarization-maintaining flat optical fiber coupling ball microscale sensor based on polarization state detection |
| CN104215197A (en) * | 2014-03-20 | 2014-12-17 | 哈尔滨工业大学 | Device and method for measuring shapes of spaces on basis of low-reflectivity three-core fiber grating arrays |
Non-Patent Citations (2)
| Title |
|---|
| 冯昆鹏: "四芯光纤光栅探针微尺度传感机理研究", 《中国优秀硕士学位论文全文数据库信息科技辑》 * |
| 裴丽等: "大长度高精度侧面研磨光纤关键技术及应用", 《红外与激光工程》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016138853A1 (en) * | 2015-03-05 | 2016-09-09 | Harbin Institute Of Technology | Fabrication method of multi-core fiber bragg grating probe used for measuring structures of a micro part based on the capillary self-assemble technique |
| US10481325B2 (en) | 2015-03-05 | 2019-11-19 | Harbin Institute Of Technology | Fabrication method of multi-core fiber Bragg grating probe used for measuring structures of a micro part based on the capillary self-assemble technique |
| CN109632133A (en) * | 2018-12-30 | 2019-04-16 | 北京信息科技大学 | A kind of temperature measuring device and method based on optical fiber |
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