CN105404068B - A kind of two dimensional tunable beam direction regulation and control method based on optical waveguide - Google Patents
A kind of two dimensional tunable beam direction regulation and control method based on optical waveguide Download PDFInfo
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- CN105404068B CN105404068B CN201510310389.4A CN201510310389A CN105404068B CN 105404068 B CN105404068 B CN 105404068B CN 201510310389 A CN201510310389 A CN 201510310389A CN 105404068 B CN105404068 B CN 105404068B
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- 230000003287 optical effect Effects 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 26
- 239000012530 fluid Substances 0.000 claims abstract description 176
- 238000004891 communication Methods 0.000 claims abstract description 5
- 238000009792 diffusion process Methods 0.000 claims description 14
- 230000001105 regulatory effect Effects 0.000 claims description 9
- 230000002572 peristaltic effect Effects 0.000 claims description 3
- 239000007788 liquid Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000007493 shaping process Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
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Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/29—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the position or the direction of light beams, i.e. deflection
- G02F1/295—Analog deflection from or in an optical waveguide structure]
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
Abstract
A kind of two dimensional tunable beam direction regulation and control method based on optical waveguide, the fluid lenticule of use includes optical waveguide, incident laser device and beam reception face, the runner for carrying microfluid is provided on optical waveguide, sandwich layer fluid inlet, up and down inlet side communication of four covering fluid inlets with fluid microcavity, the outlet side of fluid microcavity is connect with two fluid outlets, fluid outlet is connected with outflow fluid reservoir, and two dimensional tunable beam direction regulation and control method is as follows：The left and right for realizing refractive index of the centre by the velocity ratio for adjusting the covering fluid of left and right two deviates, the downward shift of refractive index of the centre is realized by the velocity ratio for adjusting two covering fluids up and down, by adjusting the velocity ratio of the two covering fluids in left and right simultaneously, the velocity ratio of upper and lower two covering fluids realizes offset of the refractive index of the centre in output plane any direction.The present invention can dynamic tuning, integrated level it is high, simple in structure, easy to make, of low cost.
Description
Technical field
The present invention relates to beam shaping technical field, especially a kind of tunable light beam direction regulation and control method.
Background technology
The shaping technique of light beam includes the regulation and control such as focusing, collimation, deflection, beam splitting, the coupling to light beam, usually regulates and controls light
The controls such as focusing, collimation, deflection, beam splitting to incident beam can be conveniently realized by learning the index distribution of medium.In recent years
It is to we provide the new method of beam shaping to carry out fast-developing micro-fluidic optical technology, and principle is by controlling fluid stream
It moves to realize the control to light micro-scale (Mao X, Lin SS, Lapsley MI, Shi J, Juluri BK, Tunable
Liquid gradient refractive index (L-GRIN) lens with two degrees of freedom,
Lab.Chip.,9(2009):2050-2058 has the tunable liquid gradual index lens of 2 degree of freedom regulating powers,
On piece laboratory, 9 (2009):2050-2058；Yang Y,Liu AQ,Chin LK,Zhang XM,Tsai DP,Lin CL,Lu
C, Wang GP, Zheludev NI, Optofluidic waveguide as a transformation optics device
For lightwave bending and manipulation, Nat.Commun., 3 (2012):651-657, it is curved for light wave
Bent and control the transfer optics based on optofluidic waveguide, nature-communication, 3 (2012):651-657).In consideration of it, miniflow
Control technology and system can be introduced into design and system of the beam direction along the free adjustable fluid lenticule of one or more dimensions
In work.First with diffusion and convection current of a kind of higher fluid of refractive index in the relatively low fluid of refractive index, forming one kind can
Regulate and control the optical waveguide of index distribution, then existed by the index distribution of dynamic regulation optical waveguide to tune light wave
The deflection and focusing of exit end obtain one or more dimension light beam deflections and the effect focused on.
There is no beam direction at present, freely adjustable lens arrangement, the adjusting of beam direction need along one or more dimensions
It is realized by external accurate machine construction, therefore structure is sufficiently complex, size is big, and can not realize beam direction
Continuous dynamic is adjustable.It is difficult to the active demand for meeting field of photodetection and light sensing field.To meet the urgent of application field
Demand, the present invention propose the two dimensional tunable beam direction regulation and control method based on optical waveguide.
Invention content
In order to overcome the external accurate machine construction of the needs of existing lenticule realize lens beam direction tuning, structure it is multiple
Miscellaneous, bulky dimensions make difficult, the regulation and control deficiency that flexibility is poor, integrated level is low, and a kind of integrated level of present invention offer is high, structure
Simply, easy to make, the low-cost two dimensional tunable beam direction regulation and control method based on optical waveguide.
The technical solution adopted by the present invention to solve the technical problems is：
A kind of two dimensional tunable beam direction regulation and control method based on optical waveguide, beam direction regulation and control method use
Fluid lenticule, the fluid lenticule include optical waveguide, incident laser device and beam reception face, the optical waveguide
On be provided with runner for carrying microfluid, the runner includes a sandwich layer fluid inlet, up and down four covering fluids
Entrance, fluid microcavity and upper and lower two fluid outlets, the two covering fluid inlets in left and right are symmetrical arranged with the central axis of microcavity,
Upper and lower two covering fluid inlets and upper and lower two fluid outlets are symmetrical arranged with the central axis of microcavity, the sandwich layer fluid
The inlet side communication of entrance, four covering fluid inlets with the fluid microcavity, the outlet side of the fluid microcavity and two
Fluid outlet connects, and the incident laser device and beam reception face are coaxially arranged, the incident laser device and beam reception face
Axis is parallel with fluid flow direction and direction is unanimously along the central axial direction of microcavity, the sandwich layer fluid inlet and covering stream
To adjust the flow rate regulating device of fluid velocity, the flow rate regulating device controls sandwich layer fluid and covering for installation in body entrance
Fluid flow rate is to realize beam direction along the free adjustable effect of two dimensions；
The sandwich layer fluid and covering fluid only exist diffusion and convective motion each other, and covering fluid ring is around sandwich layer
Fluid, the sandwich layer fluid and covering fluid are two kinds of fluids for having different refractivity, the sandwich layer fluid and covering fluid
Flowing collectively forms optical waveguide in fluid microcavity；
The two dimensional tunable beam direction regulation and control method is as follows：It is real by the velocity ratio for adjusting the covering fluid of left and right two
The left and right offset of existing refractive index of the centre, by the velocity ratio for adjusting two covering fluids up and down realize refractive index of the centre up and down partially
It moves, by adjusting the velocity ratio of the two covering fluids in left and right simultaneously, the velocity ratio of upper and lower two covering fluids realizes that center reflects
Rate is in the offset of output plane any direction.
Further, the velocity ratio of the two covering fluids in increase left and right, refractive index of the centre deviate to the right, reduce the packet of left and right two
The velocity ratio of layer fluid, refractive index of the centre deviate to the left；The velocity ratio of two covering fluids, refractive index of the centre are downward above and below increase
Offset, reduces the velocity ratio of two covering fluids up and down, and refractive index of the centre is offset up.
Further, the flow rate regulating device is the peristaltic pump for injecting fluid.
Further, the covering fluid refractive index is higher than the sandwich layer fluid refractive index.
The present invention technical concept be：Utilize the diffusion and convection current of two kinds of fluids of the sandwich layer and covering for forming optical waveguide
Process dynamics regulate and control waveguide index, influence two kinds of fluid diffusions and convection process simultaneously and then influence optical waveguide refractive index point
The principal element of cloth includes the selection of the flow velocity and different refractivity microfluid of sandwich layer and covering fluid.In time-limited micro- ditch
If fluid flow rate is than relatively low in road, diffusion effect is apparent, and the either cross-sectional direction of microcavity is still along fluid at this time
Flow direction will consider influence of the diffusion effect to concentration gradient, and diffusion of the sandwich layer fluid in covering fluid is exactly gradual change
The theoretical foundation that refractive fluid optical waveguide can be realized.Further, it is rolled over the gradual change in the past based on micro-fluidic optical technology
Rate lens difference is penetrated, the flow velocity of side covering is allowed to be more than opposite side, forms the distribution of offsets of the higher core region of refractive index, and
The deflection of light beam and focusing are carried out with this.Therefore, by control sandwich layer fluid and covering fluid flow velocity and type of fluid not
The spatial distribution of fluid diffusion concentration and refractive index only can be effectively controlled, the deflection of light wave can also be controlled to be imitated with focusing on
Fruit.
Beneficial effects of the present invention are mainly manifested in：1st, the beam shaping method based on micro-fluidic optical technology, with two kinds
Convection current and diffusion process between fluid form fluid optical waveguide structure, by the flow velocity and stream that control sandwich layer and covering fluid
Body type can obtain flexible and changeable index distribution, realize the tunable lenticule of focus direction, and the angle and coke deflected
Away from can adjust in real time；2nd, by the tunable lenticule of beam direction of the invention based on optical waveguide, one kind can be built and had both
The novel beam direction of integration and tunable function is along the adjustable fluid lenticule of Two Dimensional Free；3rd, direction of beam propagation along
Adjustability of the graded--index planar waveguides to lenticule beam direction has been effectively ensured in the central shaft liquid flow direction of lenticule；
4th, compared with traditional beam direction regulation and control method, have and do not need to external mechanical mechanism, light beam can be realized in single lenticule
The advantages of direction dynamic regulation, and have many advantages, such as that integrated level is high, simple in structure, easy to make, of low cost.
Description of the drawings
Fig. 1 is that the present invention is based on signal of the beam direction of optical waveguide along the adjustable fluid lenticule of Two Dimensional Free
Figure.
Fig. 2 be the present invention is based on the beam direction of optical waveguide along the adjustable fluid lenticule of Two Dimensional Free fluid light
Waveguide carries the cavity schematic diagram of microfluid.
Fig. 3 is to increase left side covering flow rate of liquid to realize that refractive index of the centre is turned right the refractive index profile of offset.
Fig. 4 is to increase downside covering flow rate of liquid to realize the refractive index profile deviated above refractive index of the centre.
Fig. 5 is to increase left side and downside covering flow rate of liquid simultaneously to realize the refractive index that refractive index of the centre is deviated toward upper right side
Distribution map.
Fig. 6 is to work as side covering flow velocity during 1fr increases to 9fr, the variation of the offset at index distribution center.
Fig. 7 is that side covering flow velocity is 3fr (i.e. Qleft=1.5 × 104When pL/s), the distribution of offsets figure at refractive index center.
Fig. 8 is that side covering flow velocity is 2fr (i.e. Qleft=1 × 104When pL/s), the distribution of offsets figure at refractive index center.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.
With reference to Fig. 1~Fig. 5, a kind of two dimensional tunable beam direction regulation and control method based on optical waveguide, the light beam side
To regulation and control method using fluid lenticule, the fluid lenticule includes optical waveguide 1, incident laser device 2 and beam reception
Face 3, is provided with the runner for carrying microfluid on the optical waveguide 1, the runner include a sandwich layer fluid inlet 4,
Four covering fluid inlets 5, fluid microcavity 6 and upper and lower two fluid outlets 7 up and down, left and right two covering fluid inlets with
The central axis of microcavity is symmetrical arranged, and upper and lower two covering fluid inlets and upper and lower two fluid outlets are with the central shaft of microcavity
Line is symmetrical arranged, inlet side communication of described 4, the four covering fluid inlets 5 of sandwich layer fluid inlet with the fluid microcavity 6,
The outlet side of the fluid microcavity 6 is connect with two fluid outlets 7, and the incident laser device 2 and the beam reception face 3 are coaxial
The axis in arrangement, the incident laser device and the beam reception face is consistent with fluid flow direction, the sandwich layer fluid inlet 4
With installation in covering fluid inlet 5 to adjust the flow rate regulating device of fluid velocity, the flow rate regulating device controls sandwich layer
Fluid and covering fluid flow rate are to realize beam direction along the free adjustable effect of two dimensions.
The sandwich layer fluid and covering fluid only exist diffusion and convective motion each other, and covering fluid ring is around sandwich layer
Fluid, the sandwich layer fluid and covering fluid are two kinds of fluids for having different refractivity, the sandwich layer fluid and covering fluid
It is flowed in fluid microcavity, collectively forms optical waveguide；
The two dimensional tunable beam direction regulation and control method is as follows：It is real by the velocity ratio for adjusting the covering fluid of left and right two
The left and right offset of existing refractive index of the centre, by the velocity ratio for adjusting two covering fluids up and down realize refractive index of the centre up and down partially
It moves, by adjusting the velocity ratio of the two covering fluids in left and right simultaneously, the velocity ratio of upper and lower two covering fluids realizes that center reflects
Rate is in the offset of output plane any direction.
Further, the velocity ratio of the two covering fluids in increase left and right, refractive index of the centre deviate to the right, reduce the packet of left and right two
The velocity ratio of layer fluid, refractive index of the centre deviate to the left；The velocity ratio of two covering fluids, refractive index of the centre are downward above and below increase
Offset, reduces the velocity ratio of two covering fluids up and down, and refractive index of the centre is offset up.
Further, the flow rate regulating device is the peristaltic pump for injecting fluid, it is of course also possible to use other flow velocitys
Adjustment equipment.
Further, the covering fluid refractive index is higher than the sandwich layer fluid refractive index.
The beam direction of the present embodiment realizes the method packet of beam direction regulation and control along the adjustable fluid lenticule of Two Dimensional Free
Include following steps：
(1) the sandwich layer fluid and covering fluid only exist diffusion and convective motion (sandwich layer fluid and covering each other
Fluid does not chemically react each other), covering equal flows around sandwich layer fluid, the sandwich layer fluid and covering stream
Body is two kinds of fluids for having different refractivity, and the sandwich layer fluid and covering fluid are flowed in fluid microcavity, collectively formed
Optical waveguide；
(2) laser beam for setting wavelength is incident on the optical waveguide, direction of beam propagation by the incident laser device
Consistent with fluid flow direction, the beam reception face receives the light beam exported after optical waveguide；
(3) by selecting microfluid type, the high refractive index of the sandwich layer fluid is controlled in the refraction of the covering fluid
Rate；
(4) by adjusting fluid flow rate, the spatial distribution of fluid diffusion process and refractive index is controlled, realizes the poly- of light beam
Free deflection of the burnt and beam direction along two dimensions.
In the present embodiment, in the step (3), pass through the type for selecting sandwich layer fluid and covering fluid and the step
Suddenly in (4), by controlling the flow velocity of sandwich layer fluid and covering fluid that can effectively control the process of diffusion and convection current, so as to control
Fluid is spread and the spatial distribution of refractive index；It is specific as follows：
1) influence of flow velocity refractive index distribution keeps other parameter constant, selects along fluid flow direction difference position
Put the index distribution of cross-section, flow velocity Qright=Qleft=5 × 103pL/s,Qcore=1.5 × 104pL/s,Qup=
Qdown=1.5 × 104pL/s。
2) index distribution in convection current microcavity is spread, with the various index distribution situations of the variation of covering flow velocity.
The refractive index of the centre that the flow velocity realization for individually increasing left side covering liquid and downside covering liquid is set forth in Fig. 3 and Fig. 4 is past
The refractive index profile of right and top offset.Fig. 5 shows while increases the flow velocity of left side and downside covering liquid, refractive index center
Toward the situation of upper right side offset.The direction of propagation of light is deviated towards the higher direction of refractive index.Fig. 6 gives, QleftFrom 1fr
Increase to during 9fr, the offset of refractive index of the centre increases to 35.2 μm from 0 μm.
Claims (4)
- A kind of 1. two dimensional tunable beam direction regulation and control method based on optical waveguide, it is characterised in that：The beam direction tune Prosecutor method uses fluid lenticule, and the fluid lenticule includes optical waveguide, incident laser device and beam reception face, described The runner for carrying microfluid is provided on optical waveguide, the runner includes a sandwich layer fluid inlet, up and down four A covering fluid inlet, fluid microcavity and upper and lower two fluid outlets, the two covering fluid inlets in left and right are with the central shaft of microcavity Line is symmetrical arranged, and upper and lower two covering fluid inlets and upper and lower two fluid outlets are symmetrical arranged with the central axis of microcavity, The inlet side communication of the sandwich layer fluid inlet, four covering fluid inlets with the fluid microcavity, the fluid microcavity Outlet side is connect with two fluid outlets, and the incident laser device and beam reception face are coaxially arranged, the incident laser device and The axis in beam reception face is parallel with fluid flow direction and direction is unanimously along the central axial direction of microcavity, the sandwich layer fluid It installs to adjust the flow rate regulating device of fluid velocity in entrance and covering fluid inlet；The sandwich layer fluid and covering fluid only exist diffusion and convective motion each other, and covering fluid ring is around sandwich layer stream Body, the sandwich layer fluid and covering fluid are two kinds of fluids for having different refractivity, and the sandwich layer fluid and covering fluid exist Flowing collectively forms optical waveguide in fluid microcavity；The two dimensional tunable beam direction regulation and control method is as follows：In being realized by the velocity ratio for adjusting the covering fluid of left and right two The downward shift of refractive index of the centre is realized in the left and right offset of heart refractive index by the velocity ratio for adjusting two covering fluids up and down, By adjusting the velocity ratio of the two covering fluids in left and right simultaneously, the velocity ratio of upper and lower two covering fluids realizes that refractive index of the centre exists The offset of output plane any direction.
- 2. the two dimensional tunable beam direction regulation and control method based on optical waveguide as described in claim 1, it is characterised in that： The velocity ratio of the two covering fluids in increase left and right, refractive index of the centre deviate to the right, reduce the velocity ratio of the two covering fluids in left and right, Refractive index of the centre deviates to the left；The velocity ratio of two covering fluids, refractive index of the centre are offset downward above and below increase, two above and below reduction The velocity ratio of a covering fluid, refractive index of the centre are offset up.
- 3. the two dimensional tunable beam direction regulation and control method based on optical waveguide, feature exist as claimed in claim 1 or 2 In：The flow rate regulating device is the peristaltic pump for injecting fluid.
- 4. the two dimensional tunable beam direction regulation and control method based on optical waveguide, feature exist as claimed in claim 1 or 2 In：The covering fluid refractive index is higher than the sandwich layer fluid refractive index.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101101356A (en) * | 2007-07-25 | 2008-01-09 | 中国科学院上海光学精密机械研究所 | Method for preparing microfluid optical waveguide on glass substrate using femtosecond laser |
| CN101120275A (en) * | 2005-02-17 | 2008-02-06 | 皇家飞利浦电子股份有限公司 | An optical waveguide |
| CN101825743A (en) * | 2010-03-19 | 2010-09-08 | 西北工业大学 | Fluid optical waveguide structure |
| CN103792664A (en) * | 2014-01-26 | 2014-05-14 | 浙江工业大学 | Light beam shaping method based on microfluidic optical technology |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8320049B2 (en) * | 2009-07-15 | 2012-11-27 | The Penn State Research Foundation | Tunable liquid gradient refractive index lens device |
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- 2015-06-08 CN CN201510310389.4A patent/CN105404068B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101120275A (en) * | 2005-02-17 | 2008-02-06 | 皇家飞利浦电子股份有限公司 | An optical waveguide |
| CN101101356A (en) * | 2007-07-25 | 2008-01-09 | 中国科学院上海光学精密机械研究所 | Method for preparing microfluid optical waveguide on glass substrate using femtosecond laser |
| CN101825743A (en) * | 2010-03-19 | 2010-09-08 | 西北工业大学 | Fluid optical waveguide structure |
| CN103792664A (en) * | 2014-01-26 | 2014-05-14 | 浙江工业大学 | Light beam shaping method based on microfluidic optical technology |
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Application publication date: 20160316 Assignee: GUANGXI WUZHOU MICRO-MAGNET TECHNOLOGY Co.,Ltd. Assignor: JIANG University OF TECHNOLOGY Contract record no.: X2023980054260 Denomination of invention: A two-dimensional tunable beam direction control method based on fluid optical waveguides Granted publication date: 20180706 License type: Common License Record date: 20231227 |
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