CN109407207A - A kind of wrong row's double-layer fiber array for integral field unit - Google Patents
A kind of wrong row's double-layer fiber array for integral field unit Download PDFInfo
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- CN109407207A CN109407207A CN201811017371.5A CN201811017371A CN109407207A CN 109407207 A CN109407207 A CN 109407207A CN 201811017371 A CN201811017371 A CN 201811017371A CN 109407207 A CN109407207 A CN 109407207A
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Classifications
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- 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
- G02B6/04—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings formed by bundles of fibres
- G02B6/06—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings formed by bundles of fibres the relative position of the fibres being the same at both ends, e.g. for transporting images
- G02B6/08—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings formed by bundles of fibres the relative position of the fibres being the same at both ends, e.g. for transporting images with fibre bundle in form of plate
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Coupling Of Light Guides (AREA)
Abstract
本发明属于天文学研究领域，具体涉及一种用于积分视场单元的错排双层光纤阵列。由上基板、下基板、被放置于V型槽a中的光纤阵列以及V型槽b组成，上基板和下基板上均有V型槽a，且上基板的V型槽a和下基板的V型槽a相互交错排列并且间距相等，上基板的V型槽a和下基板的V型槽a在水平方向错开65微米，光纤阵列放置于V型槽a内。本装置的光纤阵列排列方式相对比其他单排或者简单的双排方式制作工艺以及封装的难度并没有增加，反而由于错排的排列方式使封装变得更加简便，此外排列方式有了明显的改进，错排的方法使光纤排列更加紧密，将狭缝端长度减小为原来的一半，减少了望远镜的制作成本。
The invention belongs to the field of astronomy research, and in particular relates to a staggered double-layer optical fiber array used for an integrating field of view unit. It consists of an upper substrate, a lower substrate, an optical fiber array placed in a V-shaped groove a, and a V-shaped groove b. There are V-shaped grooves a on the upper and lower substrates, and the V-shaped grooves of the upper substrate and the lower substrate are The V-grooves a are staggered and spaced at equal intervals. The V-groove a of the upper substrate and the V-groove a of the lower substrate are staggered by 65 microns in the horizontal direction. The fiber array is placed in the V-groove a. Compared with other single-row or simple double-row methods, the optical fiber array arrangement of the device does not increase the difficulty of the manufacturing process and packaging. On the contrary, the staggered arrangement makes the packaging easier, and the arrangement is significantly improved. , the staggered arrangement makes the arrangement of the optical fibers more compact, reduces the length of the slit end to half of the original, and reduces the production cost of the telescope.
Description
Technical field
The invention belongs to astronomy research fields, and in particular to a kind of to arrange the double-deck optical fiber array for the wrong of integral field unit
Column.
Background technique
Integral field unit (IFU) is to sample the extanded source target in two-dimensional field of view, then that each sampling is single
The energy of member is sent in spectrometer, obtains three-dimensional information (spatial domain (x, y) and the spectral domain of extanded source simultaneously by single exposure
λ).IFU includes lenticule end and slit ends, and slit ends fiber array needs specific structure to be fixed.
Developing the method for fiber array both at home and abroad is mainly boring method, optical channel close-spaced method and V-groove method etc..In IFU
Mainly optical fiber is fixed using V-groove.V-groove method is suitble to make intensive fiber array, and production method is flexible, user
Just and structure is accurate.
The fiber array made at present is mainly one-dimensional fiber array, but for the structure of IFU, one-dimension optical-fiber battle array
Be listed in need to arrange it is thousands of with optical fiber when, the length of slit ends can be too long, and increases difficulty in encapsulation and manufacture craft
Degree.So two-dimensional fiber array is best selection.
A kind of Chinese patent (CN104765101A) multi-clamping position optical fiber arranging fixture, while realizing the array of one-dimension optical-fiber
Laying and clamping, but the apparatus structure of the patent is complicated and can only clamp single row of fiber array, the meeting when being applied on IFU
Increase slit ends length, increases spectrometer quantity, greatly enhance the manufacturing cost of telescope.Chinese patent
(CN101587305A) a kind of two-dimensional double-layer fiber array, equally realizes the arrangement of fiber array, but what this patent was mentioned
Device needs the fiber array of additional fixture or protective device deprotection surface layer not suffer oppression or injure, and increases the body of device
Product.Chinese patent (CN105242354A) rectangle fiber array device, the device which mentions are also a kind of optical fiber of multilayer
Array, but the device needs that optical fiber is first fixed as optical fiber layer when placing optical fiber to place by several times again, wastes a large amount of time,
And mutually sliding is easy between the V-groove substrate optical fiber for placing this face to generate dislocation or squeeze, it is this for IFU
It is clearly not applicable for needing the very high fiber array sortord of position precision.
In conclusion existing in the prior art, encapsulation and manufacture craft difficulty are big, telescope manufacturing cost is high, apparatus body
The problems such as product is big, effect is bad.
Summary of the invention
It is an object of the invention to reduce the volume of IFU slit ends fiber array, makes efficient fiber array and constitute
Element keeps the arrangement of slit ends optical fiber closer, and the quantity for reducing spectrometer reduces the cost of manufacture of telescope and in high stable
It is improved service life under the premise of property and precision.
A kind of wrong row's double-layer fiber array for integral field unit, by upper substrate 01, lower substrate 02, is placed on V
Fiber array in type groove a and V-groove b composition, there is V-groove a on upper substrate 01 and lower substrate 02, and upper substrate 01
The V-groove a of V-groove a and lower substrate 02 is intertwined and spacing is equal, the V-groove a of upper substrate 01 and lower substrate 02
V-groove a is staggered 65 microns in the horizontal direction, and fiber array is placed in V-groove a.
The upper substrate 01 and lower substrate 02 are quartz plate, and quartz plate is by polishing.
The distance of the bottom surface 03 of the distance between two tips V-groove a of the V-groove a is 110 microns, the bottom surface 03 of V-groove a and stone
The distance of English plate real estate 04 is 50 microns, is divided into 130 microns between each slot of same row's V-groove a.
Optical fiber used in the fiber array is the optical fiber that diameter is 125 microns, and optical fiber is solid with epoxy resin 301-2
It is scheduled in V-groove a.
The both ends of V-groove a of the V-groove b on upper substrate 01, lower substrate 02, V-groove b subtended angle width maximum are
360 microns, the fibre diameter being placed in V-groove b is 355 microns, bottom surface and the stone that the subtended angle of V-groove b is 60 ° and V-groove b
English plate real estate 04 is overlapped.
The beneficial effects of the present invention are:
The fiber array arrangement mode of the present apparatus compare other single or simple double mode manufacture crafts and
The difficulty of encapsulation is there is no increasing, and instead since the arrangement mode of mistake row makes encapsulation become easier, furthermore arrangement mode has
It is significantly improved, the method for mistake row keeps optical fiber arrangement even closer, slit ends length is reduced to original half, reduces
The cost of manufacture of telescope.In the case where and fibre core pitch-limited identical in fibre core diameter, mistake row's fiber array allows optical fiber to have more
Thick coat, guarantees that optical fiber has better flexing resistance, substantially increases stability and the service life of IFU.And due to making
It is communication universal optical fibre, adapts it to other field and the difference of fiber array is required, widened this fiber array
Practicability.
Detailed description of the invention
Fig. 1 is the schematic cross-section of wrong row's double-layer fiber array；
Fig. 2 is structure of the fiber array when being fixed with resin glue；
Fig. 3 is position view of the locating slot in slit ends fiber array；
Fig. 4 is the appearance diagram after wrong row's double-layer fiber array encapsulation.
Specific embodiment
The present invention is described further with reference to the accompanying drawing.
In Fig. 1: the bottom surface of 03-V type groove a；04- quartz plate real estate；
In Fig. 2: 05- cover board；
In Fig. 3: 01- upper substrate；02- lower substrate；
The present invention is a kind of fiber array V-shaped type groove substrate for being used for integral field unit (IFU) device.In the slit of IFU
End needs to be distributed a large amount of optical fiber, and V-groove has the function of fixed optical fiber.This V-groove substrate is by fiber array V-shaped type groove and positioning V
Type groove two parts composition, on the two panels quartz plate placed up and down, one layer of V-groove of respectively arranging, optical fiber arrangement is in V-groove
Fiber array is formed, and since two panels quartz plate is staggered relatively, two layers of fiber array can be formed, every layer of fiber array can be with
It places several optical fiber, and its open end arrangement mode is not common mutual to its mode, and is horizontally oriented interlaced.
Respectively there is a positioning V-shaped slot opposing upper and lower in the position of quartzy board ends, can playing fixed V-groove substrate, so that it will not send out
The function of raw sliding.The length of IFU slit ends can be reduced to original half by this V-groove fiber array mode, be reduced
The quantity of spectrometer reduces the manufacturing cost of telescope.And relative to single technology, mistake row's fiber array allows optical fiber to have more
Thick coat, to improve service life and the stability of IFU.
A kind of wrong row's double-layer fiber array for IFU slit ends, has substrate, two-layer substrate two rows are mutually handed over
The wrong and identical V-groove of spacing.It is fixed when optical fiber is placed in V-groove using adhesive.
Two layers of fiber array is distributed on different quartz plates.
Since upper layer and lower layer V-groove is staggered relatively, this fiber array is not necessarily to additional cover board and protective device.
Two pieces of quartz plates are by polishing, surface Glabrous thorn, to the generation of collocation component is scratched therewith and retardance is existing
As.
The distance of the distance between two tips bottom surface 03 of V-groove a is 110 microns.
The bottom surface 03 of V-groove is 50 microns at a distance from quartz plate real estate 04.
It is inclined-plane in the cut surface of production two V-grooves of starting and quartz plate.
It is the optical fiber that diameter is 125 microns used in this mistake row's fiber array.
It is 130 ± 1 microns that the interval of the same each slot of row's V-groove, which is identical,.
The upper layer and lower layer quartz plate sliding of wrong row in order to prevent, V-groove a respectively opens at both ends a positioning and uses on two pieces of substrates
V-groove b.
V-groove b is to play fixed function, and subtended angle width maximum is 360 ± 1 microns.
The fibre diameter being placed in V-groove b is 355 microns.
The subtended angle of V-groove b is that 60 ° and V-groove b of bottom surface is overlapped with quartz base plate bottom surface 04
The present invention relates to astronomy fields, mainly a kind of novel slit ends V-type involved in integral field unit (IFU)
Slot fiber array.
Integral field unit (IFU) is to sample the extanded source target in two-dimensional field of view, then that each sampling is single
The energy of member is sent in spectrometer, obtains three-dimensional information (spatial domain (x, y) and the spectral domain of extanded source simultaneously by single exposure
λ).IFU includes lenticule end and slit ends, and slit ends fiber array needs specific structure to be fixed.
Developing the method for fiber array both at home and abroad is mainly boring method, optical channel close-spaced method and V-groove method etc..In IFU
Mainly optical fiber is fixed using V-groove.V-groove method is suitble to make intensive fiber array, and production method is flexible, user
Just and structure is accurate.
The fiber array made at present is mainly one-dimensional fiber array, but for the structure of IFU, one-dimension optical-fiber battle array
Be listed in need to arrange it is thousands of with optical fiber when, the length of slit ends can be too long, and increases difficulty in encapsulation and manufacture craft
Degree.So two-dimensional fiber array is best selection.
A kind of Chinese patent (CN104765101A) multi-clamping position optical fiber arranging fixture, while realizing the array of one-dimension optical-fiber
Laying and clamping, but the apparatus structure of the patent is complicated and can only clamp single row of fiber array, the meeting when being applied on IFU
Increase slit ends length, increases spectrometer quantity, greatly enhance the manufacturing cost of telescope.Chinese patent
(CN101587305A) a kind of two-dimensional double-layer fiber array, equally realizes the arrangement of fiber array, but what this patent was mentioned
Device needs the fiber array of additional fixture or protective device deprotection surface layer not suffer oppression or injure, and increases the body of device
Product.Chinese patent (CN105242354A) rectangle fiber array device, the device which mentions are also a kind of optical fiber of multilayer
Array, but the device needs that optical fiber is first fixed as optical fiber layer when placing optical fiber to place by several times again, wastes a large amount of time,
And mutually sliding is easy between the V-groove substrate optical fiber for placing this face to generate dislocation or squeeze, it is this for IFU
It is clearly not applicable for needing the very high fiber array sortord of position precision.
It is an object of the invention to reduce the volume of IFU slit ends fiber array, makes efficient fiber array and constitute
Element keeps the arrangement of slit ends optical fiber closer, and the quantity for reducing spectrometer reduces the cost of manufacture of telescope and in high stable
It is improved service life under the premise of property and precision.
The equal V-groove of the identical quantity of size, the spacing of every two V-groove are got on the identical quartz plate of two pieces of thickness
It is 130 microns, V-groove depth is 110 microns.And its depth is 50 microns lower than quartz plate, and optical fiber is facilitated to fix.And two
Block quartz plate has one end of V-groove staggered relatively but does not contact.Optical fiber can be made interlaced after being put into optical fiber in V-groove but not
It squeezes.
Although V-groove spacing on two pieces of quartz plates is equal, quantity is identical.But position is different, the V on two panels quartz plate
Type groove position differs 65 microns, so that V-groove is just staggered up and down.Form the emphasis of this patent: the fiber array of mistake row.
It does not need to peel off coat when optical fiber is placed in V-groove in the present apparatus, protection can be played by remaining coated with layer
Optical fiber not will receive acting on for glue and generate unnecessary corrosion or abrasion.
V-groove is suitable for 125 micron optical fibers in this patent, which is the common-use size of telecommunication optical fiber, no longer needs to volume
Outer design optical fiber.
It after optical fiber is put into, is fixed with solidification glue epoxy resin 301-2, V-type is entered by the method slowly penetrated
In slot, this method does not generate blistering and increases optical fiber and the contact area of V-groove improves stability and service life.
A positioning V-shaped slot is made a call to the both ends of required V-groove are each, when packaged the position of positioning V-shaped slot and fiber array
It is different with the wrong row of V type groove, it faces, does not deviate in the horizontal direction.
The spacing of positioning V-shaped slot is 360 ± 1 microns, and V-groove subtended angle is 60 °.One can be just placed in the locating slot
Diameter is 355 microns of optical fiber, and the optical fiber core diameter applied in this optical fiber ratio IFU is much greater, so in insertion optical fiber and carrying out
Can prevent two quartz plates from will not move left and right after fixation, and using optical fiber positioned relative to use other quartz or
Metal is lighter, is physically easier to perform.
Compared with prior art, the beneficial effects of the present invention are: the fiber array arrangement mode of the present apparatus compares it
He is single or simply double mode manufacture craft and the difficulty of encapsulation are there is no increasing, instead due to the arrangement side of mistake row
Formula makes encapsulation become easier, and furthermore arrangement mode, which has, is significantly improved, and the method for mistake row keeps optical fiber arrangement even closer,
Slit ends length is reduced to original half, reduces the cost of manufacture of telescope.And fibre core spacing identical in fibre core diameter by
In the case where limit, mistake row's fiber array allows optical fiber to have thicker coat, guarantees that optical fiber has better flexing resistance, greatly improves
The stability of IFU and service life.And due to using communication universal optical fibre, other field is adapted it to for optical fiber
The different of array require, and have widened the practicability of this fiber array.
Understand to make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing, to the present invention into
One step is described in detail.
Referring to figs. 1 to Fig. 4, the present invention is a kind of V-groove fiber array device for IFU slit ends, including upper substrate
01, lower substrate 02 and the fiber array being placed in V-groove.
Fig. 1 is the schematic cross-section of wrong row's fiber array proposed by the present invention.As shown in Figure 1, being used for IFU slit ends optical fiber
The V-groove of array is distributed on two quartz plates, and the depth of each V-groove is 110 microns, is spaced 130 microns.V-groove a's
Bottom surface 03 differs 50 microns with the real estate 04 of quartz plate, and the V-groove and quartz plate intersecting lateral faces of initial position are higher than V-groove portion
Divide to extend along V-groove side surface direction and cut, without deflection angle.V-groove is staggered relatively on upper and lower two panels quartz plate, in level side
To 65 microns of the position of being staggered.Optical fiber can be placed in V-groove, and each V-groove can place an optical fiber, with epoxy resin 301-
2 is fixed.
When fixed in two steps, first upper and lower base plate V-groove is put in upward in specified level fixture, optical fiber is put in two groups of V
In type groove, then glue will be fixed and instilled along optical fiber arrangement direction, and so that it is slowly penetrated V-groove, along with cover board 05 is compacted optical fiber
Array removes cover board 05 after gelling to be fixed is solid, by upper and lower base plate formation 2-D optical fibre array staggered relatively, as shown in Figure 2.This
Kind method can reduce the generation of bubble.Pay attention to dosage simultaneously, should make have a small amount of colloid from V-groove just after standing a period of time
Bottom end exudation preferably, glue amount can be such that optical fiber loosens in observation use process very little influences image quality, and dosage can make too much
Colloid overflows compressing optical fiber, influences fiber exit efficiency and coke ratio.
As shown in figure 3, the V-groove b that fixed function is played at both ends is mutual corresponding, the angle of fixing groove in the horizontal direction
It is 360 ± micron for 60 ° of spacing, the diamond structure that upper and lower two V-grooves are formed is just enough to the light that a diameter is 355 microns
Fibre passes through, and the diameter of this optical fiber is bigger than test optical fiber, can consolidate to slit ends fiber array after pouring into fixed glue
Fixed, so that it will not move left and right.
As shown in figure 4, be the schematic diagram of integral field unit (IFU) slit ends tooling, it will when quartz plate etches V-groove
V type groove is located in the same position of upper and lower two pieces of quartz plates, the position of fixing groove to the left or is only moved right 65 microns, in this way
Manufacture difficulty is reduced, Production Time has been saved.It is not necessarily to cover board when packaged, this tooling inherently has the work of protection optical fiber
With.And the quantity of V-groove can be increased according to actual demands of engineering.
When assembling fiber array, the specific steps are as follows:
Required optical fiber is divided into two groups according to the positioning relation between slit ends and microwell plate.
It has arranged in the V-groove a on upper substrate 01 and lower substrate 02 optical fiber, has been fixed with epoxide-resin glue respectively,
Fiber array is formed, is layered on fiber array with one piece of flat and smooth cover board 05, is compacted optical fiber, was bonded in glue
Be not in opposite sliding in journey, keep optical fiber in the same plane.
After fiber array is fixed on substrate, cover board 05 is removed.It is put in the positioning V-shaped slot b at 02 both ends of lower substrate
Set positioning optical fiber.Upper substrate 01 and the pressing of lower substrate 02 are fixed again.
For being exposed to the optical fiber of slit ends outer end, first cut short with optical fiber pincers, then end face is polished with special instrument
Processing.
The encapsulation of fiber array of the invention relative to one-dimension optical-fiber array for, encapsulation is more easier, and due to
Its device does not include cover board and is 2-D optical fibre array after integrally assembling, and improves the density of fiber array, reduction is fabricated to
This, increases stability and the service life of IFU.
Above description describes in detail the present invention, it should be appreciated that the present invention is not limited thereto, either shape
Or material constitutes any variation, all structures provided using this patent are designed, and are belonged to a kind of deformation of the invention, are belonged to
Within protection scope of the present invention.
Claims (5)
1. a kind of wrong row's double-layer fiber array for integral field unit, by upper substrate (01), lower substrate (02), is placed on
Fiber array and V-groove b composition in V-groove a, it is characterised in that: have V-groove on upper substrate (01) and lower substrate (02)
A, and the V-groove a of the V-groove a of upper substrate (01) and lower substrate (02) is intertwined and spacing is equal, upper substrate (01)
V-groove a and the V-groove a of lower substrate (02) be staggered in the horizontal direction 65 microns, fiber array is placed in V-groove a.
2. a kind of wrong row's double-layer fiber array for integral field unit according to claim 1, it is characterised in that: institute
It states upper substrate (01) and lower substrate (02) is quartz plate, and quartz plate is by polishing.
3. a kind of wrong row's double-layer fiber array for integral field unit according to claim 1, it is characterised in that: institute
The distance for stating the bottom surface (03) of the distance between two tips V-groove a of V-groove a is 110 microns, the bottom surface (03) of V-groove a and quartz plate base
The distance of plate face (04) is 50 microns, is divided into 130 microns between each slot of same row's V-groove a.
4. a kind of wrong row's double-layer fiber array for integral field unit according to claim 1, it is characterised in that: institute
Stating optical fiber used in fiber array is the optical fiber that diameter is 125 microns, and optical fiber is fixed on V-groove a with epoxy resin 301-2
It is interior.
5. a kind of wrong row's double-layer fiber array for integral field unit according to claim 1, it is characterised in that: institute
The both ends of V-groove a of the V-groove b on upper substrate (01), lower substrate (02) are stated, V-groove b subtended angle width maximum is 360 micro-
Rice, the fibre diameter being placed in V-groove b are 355 microns, bottom surface and the quartz plate that the subtended angle of V-groove b is 60 ° and V-groove b
Real estate (04) is overlapped.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811017371.5A CN109407207A (en) | 2018-09-01 | 2018-09-01 | A kind of wrong row's double-layer fiber array for integral field unit |
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| CN201811017371.5A CN109407207A (en) | 2018-09-01 | 2018-09-01 | A kind of wrong row's double-layer fiber array for integral field unit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109917510A (en) * | 2019-03-21 | 2019-06-21 | 哈尔滨工程大学 | A Self-Focusing Fiber Array for Integrating Field of View Units |
| CN111198417A (en) * | 2020-03-17 | 2020-05-26 | 中山市美速光电技术有限公司 | 2XN optical fiber array and manufacturing method thereof |
| CN111338023A (en) * | 2020-04-20 | 2020-06-26 | 上海雍邑光电科技有限公司 | Panda-type polarization-maintaining fiber array with small core pitch and preparation method thereof |
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| CN111338023A (en) * | 2020-04-20 | 2020-06-26 | 上海雍邑光电科技有限公司 | Panda-type polarization-maintaining fiber array with small core pitch and preparation method thereof |
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