CN207067546U - A kind of step multimode fibre optical tweezer based on skew ray annular light field - Google Patents
A kind of step multimode fibre optical tweezer based on skew ray annular light field Download PDFInfo
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- CN207067546U CN207067546U CN201721083580.0U CN201721083580U CN207067546U CN 207067546 U CN207067546 U CN 207067546U CN 201721083580 U CN201721083580 U CN 201721083580U CN 207067546 U CN207067546 U CN 207067546U
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- multimode fibre
- step multimode
- light field
- oblique incidence
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Abstract
The utility model discloses a kind of step multimode fibre optical tweezer based on skew ray annular light field, including light source (1), single-mode fiber (2), step multimode fibre (4) and capture tweezer head (6)；In light source optical coupling injection single-mode fiber, single-mode fiber notes light to the oblique incidence of step multimode fibre, light spiral onwards transmission and is formed annular light field in the form of skew ray in step multimode fibre, and circular cone structure of the ring light in step multimode fibre end face is totally reflected convergence, produces strong trapping stiffness.The device can capture a unicellular and grade microlayer model of ascending to heaven, and change note angular, position, spacing by oblique incidence adjusting means, realize that the accurate capture to cell, carrying, ejection, screening etc. operate.
Description
Technical field
The utility model belongs to accurate medical research experiment equipment field, and in particular to one kind is based on skew ray annular light field
Step multimode fibre optical tweezer.
Background technology
In light field most strength, i.e., optical tweezer is using the gradient force that distribution of light intensity spatial variations are formed the stable capture of particulate
The focal position of light beam.When laser beam moves, can drives particulate to move together, realizes and the precision of particulate is manipulated.Cell
It is the base unit of life 26S Proteasome Structure and Function, optical tweezer is used to conform exactly to cell, Asia carefully the characteristics of manipulating particulate in micrometer range
The research of born of the same parents' level.In the contention that 20 end of the centurys various new technologies are vied with each other for glamour, optical tweezer studies living cells with its dynamic
Unique function, show credit human eye purpose brilliance radiance.Traditional optical tweezer is built based on optical microscope system, and it is logical
Micro objective is crossed by laser beam focusing, ligh trap is formed using the gradient field of force near focusing center, realizes and particulate is caught
Obtain and manipulate.Traditional optical tweezer is complicated, bulky, expensive, and operative skill requires high, and sample one-movement-freedom-degree is small,
Limit it and be widely applied value.Compared with based on microscopical conventional optical optical tweezers system, the miniature probe formula light based on single fiber
Tweezers system is simple in construction, compact, and it is big to catch sunken scope, manoeuvrable, is conveniently adjusted, is adapted to more biological cells and biology
The light microoperation demand of molecule, application of the micro- manipulation technology of laser in life science is expanded, is had a wide range of applications
Prospect.
Utility model content
In consideration of it, the utility model provides a kind of step multimode fibre optical tweezer based on skew ray annular light field.The device
A unicellular and grade microlayer model of ascending to heaven can be captured, note angular, position, spacing are changed by oblique incidence adjusting means, realized to thin
The operation such as the accurate capture of born of the same parents, carrying, ejection, screening.
The purpose of this utility model realized by such technical scheme, a kind of rank based on skew ray annular light field
Jump multimode fibre optical tweezer, including light source 1, single-mode fiber 2 and step multimode fibre 4, and the end of step multimode fibre sets capture
Tweezer first 6；In light source optical coupling injection single-mode fiber, single-mode fiber notes light, step multimode fibre to the oblique incidence of step multimode fibre
Middle light spiral onwards transmission and is formed annular light field in the form of skew ray, and ring light converges in the first 6 end face total reflection of capture tweezer
It is poly-, produce strong trapping stiffness；Also include oblique incidence adjusting means I3-1 and oblique incidence adjusting means II3-2, the oblique incidence regulation
The horizontal clamping step multimode fibres of device II, the oblique orientation clamping single-mode fibers of oblique incidence adjusting means I.
Further, the X-axis that the oblique incidence adjusting means I includes being used to adjust single-mode fiber position on horizontal level is adjusted
Save part I, adjust part I and for adjusting single-mode fiber emergent light for adjusting the Y-axis of single-mode fiber position on vertical position
The rotating disk of shooting angle rotates regulation part I.
Further, the incident section that the oblique incidence adjusting means II includes being used to adjust step multimode fibre is in horizontal level
The X-axis regulation part II of upper position, the Y-axis regulation part of incident section position on vertical position for adjusting step multimode fibre
The II and rotating disk rotation regulation part II for adjusting step multimode fibre incidence section angle.
Further, the capture tweezer head is using bare fibre grinding technique, and system is processed to step multimode fibre tail end
Into passing sequentially through that coat is divested, cut, grinding, step multimode fibre tail end is processed into the symmetrical frustum of a cone by polishing step
Structure.
Further, the optical fiber optical tweezers also include micro- behaviour's hand 5, and micro- behaviour's hand is used for the position for adjusting multimode step optical fiber latter end
Put.
By adopting the above-described technical solution, the utility model has the following advantages：
It is fine in multimode fibre the utility model proposes a kind of step multimode fibre optical tweezer based on skew ray annular light field
Using the meridional ray in the method elimination fibre core of oblique incidence in core, the annular light field being made up of completely skew ray is constructed, is used
After bare fibre grinding technique processes circular cone structure in multimode fibre end face, by the ring of the skew ray transmitted in multimode fibre composition
After the convergence of shape light field, intensity gradient field is produced, is configured to strong trapping stiffness single fiber optical tweezers, can capture unicellular, can also captured
Ascend to heaven a grade microlayer model；Note angular, position, spacing are changed by oblique incidence adjusting means, can effectively change optical tweezer emergent light
The distribution of field and light intensity etc., so as to adjust capture point position and force trapping, and then utilize cheap step-index multimode
Optical fiber, realize that the accurate capture to cell, carrying, ejection, screening etc. operate.The utility model proposes skew ray wire loop square
Multimode fibre optical tweezer, force trapping is big, and catch position is adjustable, the screening of microcosmic particle, move, store and carrying in terms of there is pole
High application value, had broad application prospects in accurate medical research experimental field.
Brief description of the drawings
In order that the purpose of this utility model, technical scheme and advantage are clearer, below in conjunction with accompanying drawing to this practicality
It is new to be described in further detail, wherein：
Fig. 1 is overall structure composition schematic diagram of the present utility model；
Fig. 2 is that skew ray transmits schematic diagram in a fiber；
Fig. 3 is that skew ray is projected in fiber end face schematic diagram；
Fig. 4 is skew ray annular light field step multimode fibre optical tweezer light field mechanism figure.
Embodiment
Below with reference to accompanying drawing, preferred embodiment of the present utility model is described in detail；It is it should be appreciated that it is preferred that real
Example is applied only for illustrating the utility model, rather than in order to limit the scope of protection of the utility model.
A kind of step multimode fibre optical tweezer based on skew ray annular light field, including light source 1, single-mode fiber 2, oblique incidence tune
Regulating device I3, oblique incidence adjusting means II3-2, step multimode fibre 4, for adjust step multimode fibre outgoing fragment position it is micro-
Hand 5, microscope 7 are grasped, the end of step multimode fibre sets capture tweezer first 6；Light source optical coupling is by being installed in single module optical fiber
In the optical coupling lens injection single-mode fiber of front end, make single-mode fiber oblique to step multimode fibre with oblique incidence adjusting means I
Penetrate note light, light spiral onwards transmission and is formed annular light field in the form of skew ray in step multimode fibre, and ring light is being caught
The first 6 end face total reflection convergence of tweezer is obtained, strong trapping stiffness is produced, a unicellular and grade microlayer model of ascending to heaven can be captured, step multimode fibre
The position of incident section by oblique incidence adjusting means II control, by oblique incidence adjusting means I, II change note angular, position,
Away from, it can effectively change optical tweezer and be emitted distribution and light intensity of light field etc., the regulation capture under the auxiliary of microscope and micro- behaviour's hand 5
Point position and force trapping, and then cheap step-index multimode fiber is utilized, realize the accurate capture to cell, remove
The operations such as fortune, ejection, screening.
In the present embodiment, described light source 1 is 980nm lasers, and it uses butterfly semiconductor, is protected with reference to optical fiber FBG
It is stable to demonstrate,prove spectral wavelength, power is continuously adjustable, and after 980nm single-mode fibers, peak power output is more than 400mW.
In the present embodiment, described single-mode fiber 2 is 980nm single-mode fibers, and numerical aperture 0.2,980nm corresponds to mould field
4.2 μm of diameter, 3.6 μm of core diameter, 125 μm of cladding diameter, front end are coupled by coupled lens with 980nm light sources 1.
In the present embodiment, described oblique incidence adjusting means I, II is that two accurate adjustment frames form, each adjustment frame
It is respectively provided with X-axis, Y-axis displacement regulating platform and rotating disk and rotates regulation part, the capillary tubing that may be inserted into optical fiber is fixed with rotating disk
And fiber stub, the horizontal clamping multimode fibres 4 of wherein oblique incidence adjusting means II, the oblique orientation clampings of oblique incidence adjusting means I are single
Mode fiber 2, adjusted by the cooperation of both sides oblique incidence adjusting means, it is oblique to step multimode fibre can effectively to change single-mode fiber
Note angular, the position and spacing of incidence note light, realize that the accurate capture to cell, carrying, screening etc. operate；When regulation single mode
When optical fiber is with step multimode fibre end face face, step multimode fibre outgoing light field only has thrust, completes the ejection to cell.
In the present embodiment, described step multimode fibre 4 is glass-clad step-index multimode fiber, numerical aperture
0.22,105 μm of optical fiber core diameter, 125 μm of cladding diameter.
In the present embodiment, described capture tweezer first 6 is using bare fibre grinding technique, to the tail end of step multimode fibre 4
It is processed and is made, passes sequentially through coat and the step such as divest, cut, grinding, polishing and be processed into the tail end of multimode fibre 4 symmetrically
Circular cone structure.
The making to unicellular precisely detection means building block is described further below.
1st, tweezer head manufacturing process is captured：As shown in figure 1, one section of length of interception is 2m, outer cladding diameter is 125 μm, fibre core is straight
The step-index multimode fiber that 105 μm of footpath, coat 2cm is removed using Miller pincers at its both ends, alcohol is dipped with non-woven fabrics
Wiped clean, and it is using optical fiber cutter that its ends cutting is smooth, the step-index multimode fiber cut flat with is installed in light
On fine grinding system, optical fiber is pushed, it, into 37.5 ° of inclination angle, optical fiber rotation synchronization is carried out with 8000 mesh sand paper with abrasive disk
Grinding.When grinding depth to 34.5 μm, upper lift optical fiber, change 12000 mesh sand paper polishing optical fiber and grind face 2 hours, ensure light
Fine inclined-plane is substantially flat；980nm laser device lasers are injected into single-mode fiber, light is noted in single-mode fiber oblique incidence to multimode fibre, tiltedly
Incident method eliminates the meridional ray in fibre core, as shown in Figure 2；Construct the annular light field being made up of completely skew ray, such as Fig. 3
Shown, the annular light field of the skew ray composition transmitted in multimode fibre produces light intensity after circular cone structure reflecting focal is ground
Gradient fields, strong trapping stiffness single fiber optical tweezers are configured to, can capture unicellular, a grade microlayer model of ascending to heaven can be also captured, such as Fig. 4 institutes
Show.
2nd, oblique incidence adjusting means operates：Long 2m 980nm single-mode fibers are intercepted, clamping peeling optical fibre both ends using Miller applies
Each 2cm of coating, fibre cladding is cleaned up with alcohol, both ends of the surface are cut to smooth, tail end installation coupling with optical fiber cutter
Lens couple with 980nm light sources 1, capillary tubing and fiber stub on other end insertion oblique incidence adjusting means I rotating disks；It will grind
Capillary tubing and optical fiber on the non-abrasive tip insertion oblique incidence adjusting means II rotating disks of step-index multimode fiber of milled are inserted
Core, and it is horizontal positioned；Oblique incidence adjusting means I single-mode fibers X-axis and Y-axis regulating platform, and rotary turnplate are adjusted, is allowed to oblique incidence
Into step multimode fibre, adjusted by the cooperation of both sides adjustment frame, can effectively change single-mode fiber to step multimode fibre
Note angular, the position and spacing of light are noted in oblique incidence, realize that the accurate capture to cell, carrying, screening etc. operate.
3rd, experimental provision is overall：In 980nm light sources optical coupling injection single-mode fiber, make list with oblique incidence adjusting means I, II
Mode fiber gives step multimode fibre oblique incidence note light, and spiral onwards transmission is simultaneously in the form of skew ray for light in step multimode fibre
Annular light field is formed, circular cone structure of the ring light in step multimode fibre end face is totally reflected convergence, produces strong trapping stiffness, can catch
Obtain a unicellular and grade microlayer model of ascending to heaven；Note angular, position, spacing are changed by oblique incidence adjusting means I, II, can be effective
Change distribution and light intensity of optical tweezer outgoing light field etc., so as to adjust capture point position and force trapping, and then utilize cheap
Step-index multimode fiber, realize that the accurate capture to cell, carrying, ejection, screening etc. operate.It can observe under the microscope
Operational circumstances of the optical tweezer to cell.
The utility model proposes a kind of step multimode fibre optical tweezer based on skew ray annular light field, given by single-mode fiber
Light is noted in multimode fibre oblique incidence, light spiral onwards transmission in the form of skew ray in multimode fibre, and in multimode fibre fibre core
End face forms annular light field, using bare fibre grinding technique in multimode fibre end surface grinding circular cone structure, multimode fibre fibre core
In annular light field be totally reflected and converge in fiber end face circular cone structure, convergence focus area produces strong trapping stiffness, can capture winged
Upgrade microlayer model and unicellular, for unicellular accurate control and unicellular micro-administration.Adjusted by the cooperation of both sides adjustment frame
Section, it can effectively change note angular from light to multimode fibre oblique incidence, position and spacing that single-mode fiber notes, for cell sieve
Choosing；When adjusting single-mode fiber with multimode fibre end face face, multimode fibre outgoing light field only has thrust, completes the bullet to cell
Penetrate.
Preferred embodiment of the present utility model is the foregoing is only, is not limited to the utility model, it is clear that this area
Technical staff can to the utility model carry out it is various change and modification without departing from spirit and scope of the present utility model.This
Sample, if these modifications and variations of the present utility model belong to the utility model claims and its equivalent technologies scope it
Interior, then the utility model is also intended to comprising including these changes and modification.
Claims (5)
- A kind of 1. step multimode fibre optical tweezer based on skew ray annular light field, it is characterised in that：Including light source (1), single-mode optics Fine (2) and step multimode fibre (4), the end of step multimode fibre set capture tweezer head (6)；Light source optical coupling injects single-mode optics In fibre, single-mode fiber gives step multimode fibre oblique incidence note light, in step multimode fibre light in the form of skew ray spiral to Preceding to transmit and form annular light field, ring light converges in the total reflection of capture tweezer head (6) end face, produces strong trapping stiffness；Also include oblique Incident adjusting means I (3-1) and oblique incidence adjusting means II (3-2), the horizontal clamping steps of the oblique incidence adjusting means II are more Mode fiber, the oblique orientation clamping single-mode fibers of oblique incidence adjusting means I.
- A kind of 2. step multimode fibre optical tweezer based on skew ray annular light field according to claim 1, it is characterised in that： The X-axis that the oblique incidence adjusting means I includes being used to adjust single-mode fiber position on horizontal level adjusts part I, for adjusting The Y-axis regulation part I of whole single-mode fiber position on vertical position and the rotating disk for adjusting single-mode fiber emergent light shooting angle Rotate regulation part I.
- A kind of 3. step multimode fibre optical tweezer based on skew ray annular light field according to claim 2, it is characterised in that： The oblique incidence adjusting means II includes being used to adjust the X-axis regulation of incident section position on horizontal level of step multimode fibre Part II, the Y-axis regulation part II of incident section position on vertical position for adjusting step multimode fibre and for adjusting rank The rotating disk for the multimode fibre incidence section angle that jumps rotates regulation part II.
- A kind of 4. step multimode fibre optical tweezer based on skew ray annular light field according to claim 1, it is characterised in that： The capture tweezer head is using bare fibre grinding technique, and step multimode fibre tail end is processed and is made, passes sequentially through coating Layer is divested, cut, grinding, step multimode fibre tail end is processed into symmetrical circular cone structure by polishing step.
- A kind of 5. step multimode fibre optical tweezer based on skew ray annular light field according to claim 1, it is characterised in that： The optical fiber optical tweezers also include micro- behaviour's hand (5), and micro- behaviour's hand is used for the position for adjusting multimode step optical fiber latter end.
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| CN201721083580.0U CN207067546U (en) | 2017-08-28 | 2017-08-28 | A kind of step multimode fibre optical tweezer based on skew ray annular light field |
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| CN201721083580.0U CN207067546U (en) | 2017-08-28 | 2017-08-28 | A kind of step multimode fibre optical tweezer based on skew ray annular light field |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107357044A (en) * | 2017-08-28 | 2017-11-17 | 重庆三峡医药高等专科学校 | A kind of step multimode fibre optical tweezer based on skew ray annular light field |
| CN110993140A (en) * | 2019-11-15 | 2020-04-10 | 桂林电子科技大学 | Single-core optical fiber-multi-core optical fiber combined optical motor system |
-
2017
- 2017-08-28 CN CN201721083580.0U patent/CN207067546U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107357044A (en) * | 2017-08-28 | 2017-11-17 | 重庆三峡医药高等专科学校 | A kind of step multimode fibre optical tweezer based on skew ray annular light field |
| CN110993140A (en) * | 2019-11-15 | 2020-04-10 | 桂林电子科技大学 | Single-core optical fiber-multi-core optical fiber combined optical motor system |
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