CN108319033A - A kind of arrayed optical fiber collimators - Google Patents
A kind of arrayed optical fiber collimators Download PDFInfo
- Publication number
- CN108319033A CN108319033A CN201810061917.0A CN201810061917A CN108319033A CN 108319033 A CN108319033 A CN 108319033A CN 201810061917 A CN201810061917 A CN 201810061917A CN 108319033 A CN108319033 A CN 108319033A
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- Prior art keywords
- optical fiber
- array
- axis parabolic
- parabolic mirror
- light
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/30—Collimators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
- B29C43/18—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles incorporating preformed parts or layers, e.g. compression moulding around inserts or for coating articles
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/08—Mirrors
- G02B5/10—Mirrors with curved faces
Abstract
The invention belongs to technical field of photo communication, and disclose a kind of arrayed optical fiber collimators, it is collectively formed by single mode optical fiber array and off-axis parabolic mirror array, the profile of optic fibre port of wherein each single mode optical fiber is arranged to, in the focal position of corresponding off-axis parabolic mirror, be consequently for light beam being input to reflection mirror array；Each off-axis parabolic mirror then executes collimation to the light from single mode optical fiber respectively, is achieved in the function of unified collimation.The invention also discloses the schemes that off-axis parabolic mirror is prepared using photocuring compression molding route, compared with prior art as used microlens array, the reflection mirror array optical fiber collimator based on precise compression molding has that cost is substantially reduced, coupling efficiency is more preferable, collimated light beam is high-quality, the advantages that no color differnece, is therefore particularly suitable for the application scenario of all kinds of high-performance selecting switch etc.
Description
Technical field
The invention belongs to technical field of photo communication, more particularly, to a kind of arrayed optical fiber collimators, based on off-axis
The speculum of paraboloid form to execute collimation to divergent beams, and have coupling efficiency height, good beam quality, no color differnece and at
The advantages that this is low, convenient for preparing.
Background technology
In optical communication field, it is often necessary to collimator array etc to its device, so as to the output of single mode optical fiber into
Row collimation.Currently, in the equipment such as optical crossbar switch, wavelength-selective switches, usually used collimator is usually transmission-type standard
Straight device finds that beam collimation efficiency is still not enough managed although they can also play the alignment function to optical fiber beam in practice
Think；In addition importantly, this kind of lenticule is usually prepared by glass wafer by dry etch process, critical optical surface
Performance for example roughness, face type etc. quality be difficult to meet the needs of high standard, exist simultaneously manufacturing cost it is very expensive, prepare
Procedure quality such as is difficult to control at multiple technical problems.Correspondingly, this field is there is an urgent need for making this further Improvement, so as to
Preferably meet growing New Generation Optical communications applications demand.
Invention content
For the above shortcoming and Improvement requirement of the prior art, the present invention provides a kind of arrayed optical fiber collimations
Device, wherein not only by the structural form as the lens settings of key component for off-axis parabolic mirror, but also further
The novel preparation route based on resin composite materials and compression molding technology is taken to it, has accordingly both efficiently solved existing light
The problems such as fine collimator array production cost is high, there are certain aberrations, additionally it is possible to free by the height of off-axis parabolic mirror
Degree processing method significantly improves the comprehensive performance of optical fiber collimator, is therefore particularly suitable for high-effect wavelength-selective switches etc
Application scenario.
To achieve the above object, it is proposed, according to the invention, provide a kind of arrayed optical fiber collimators, which is characterized in that the battle array
Column optical fiber collimator is collectively formed by fiber array and reflection mirror array, wherein：
The fiber array includes multiple single mode optical fibers being arranged in array, and the reflection mirror array, which includes multiple, is equally in
Array arrangement off-axis parabolic mirror and with the single mode optical fiber keep correspond；The profile of optic fibre of each single mode optical fiber
Port is arranged to the focal position of corresponding off-axis parabolic mirror, is consequently for light beam being input to the reflection
Lens array；
Each off-axis parabolic mirror of the reflection mirror array respectively executes the light from the single mode optical fiber
Collimation is achieved in the function that the light beam of the fiber array is executed to unified collimation.
As it is further preferred that for each off-axis parabolic mirror, preferably by light-cured resin
It is made up of press moulding mode, and has arbitrary free form surface shape.
As it is further preferred that the off-axis parabolic mirror is preferably prepared in the following ways：
(i) first, preferably simultaneously using plasma cleans substrate surface to substrate of glass；Then, anti-according to off axis paraboloid mirror
The face type feature of mirror is penetrated, processing obtains corresponding accurate die pressing mold；
(ii) coat suitable light-cured resin to the substrate under normal temperature condition, and by the accurate die pressing mold with
Substrate holding is opposed to be put on the light-cured resin, gentle pressure so that light-cured resin squeezes out, accordingly completely by
The photocurable resin material to form required off-axis parabolic mirror face type to be molded, and is then executed at photocuring to it
Reason；
(iii) resin material layer is formed by after curing after completing to demould, it is equal by vacuum coating mode on its surface
It is even to plate metallic reflective coating or multilayer dielectric reflective coating, thus to obtain final off-axis parabolic mirror product.
As it is further preferred that the accurate die pressing mold is preferably processed acquisition using single-point diamond lathe,
And the section for having multiple convexs is presented in it.
As it is further preferred that the convex is designed to the construction of off axis paraboloid mirror, and its quantity and the list
The quantity of mode fiber is consistent.
As it is further preferred that the cycle length of off-axis parabolic mirror array is preferably 100 microns~500 micro-
Rice, and be consistent with the optical fiber arrangement period length in corresponding fiber array.
As it is further preferred that the light-cured resin is preferably UV glue, and directly by apply ultraviolet light irradiation come
Curing molding.
As it is further preferred that described for the UV glue-lines for completing to be formed after solidification, thickness is preferably
10 microns~100 microns；For vacuum coating processing, it is preferably formed by UV glue-lines after finished curing most
Outside plates golden film, and its thickness is preferably set to 100 nanometers~200 nanometers.
As it is further preferred that the superficial layer of the accurate die pressing mold is preferably made of nickel metal material.
As it is further preferred that for being formed by resin material layer after completing to cure, thickness is preferably 10
Micron~100 microns.
As it is further preferred that the thickness of the metallic reflective coating is preferably 100 nanometers~200 nanometers.
As it is further preferred that above-mentioned arrayed optical fiber collimators are preferred for wavelength-selective switches system.
In general, through the invention it is contemplated above technical scheme is compared with the prior art, mainly have below
Technological merit：
1, the present invention can not only obtain the coupling of higher efficiency, but also more reality using off-axis parabolic mirror
Test shows the good beam quality of execution collimation processing, and aberration is small, is better than existing similar products；Also special root in the present invention
One of critical optical elements for being included namely reflecting optics are taken new based on resin composite materials and compression molding skill
Art had accordingly both efficiently solved the problems such as existing production cost is high, complicated there are certain aberration and light path, but also by off-axis
The high-freedom degree processing method of parabolic reflector minute surface type significantly improves applicable surface；In addition, have benefited from compression molding technology, from
The optical mirror slip of equal dies production has higher appearance and size consistency, thus adjustment hardly possible can be reduced in assembling process
Degree, can significantly reduce production cost and improve production efficiency.
2, it is different from traditional glass eyeglass and needs repeated measurement and modified complex process, which is produced into
This is relatively low, can be by replicating quickly production, and the minute surface pattern produced has preferable consistency.In addition, having benefited from multiple
Structure is closed, i.e. the thin resin layer depends on the smaller substrate of coefficient of thermal expansion (preferably glass material) so that this resin is multiple
Closing camber reflection eyeglass has preferable temperature stability, can meet the complicated performance requirement of all kinds of high-effect collimators；
3, in addition, the present invention is produced by using the technology of compression molding so that the pattern of off-axis parabolic mirror piece
Size has high consistency, is conducive to quick reverse mould production in production process；The eyeglass error of traditional grinding technics production
It is relatively large so that it needs, by finely tuning its position to reach expected optical property, not only to take work consuming in assembling process,
The machinery adjustment platform and measuring apparatus for needing customization expensive adjust to realize, are unfavorable for low-cost, high-volume production.It takes
After compression molding technology, the appearance and size of eyeglass has preferable consistency, can reach adjustment-free under the auxiliary of positioning tool
Or micro-adjustment can meet the requirement of light path, to realize quick assembling, equipment input cost is greatly lowered and improves production
Efficiency, and can realize large-scale production, production process yields is high；
4, arrayed optical fiber collimators according to the invention have identical collimating effect, effect of dispersion to the light of different-waveband
It is minimum, it is provided simultaneously with coupling efficiency height, good beam quality, the outstanding comprehensive performances such as aberration is small are therefore particularly suitable for efficiently
The application scenario of energy wavelength-selective switches etc.
Description of the drawings
Fig. 1 is the overall construction signal that the arrayed optical fiber collimators constructed by the present invention are shown as demonstration
Figure；
Fig. 2 is the technical process schematic diagram according to the invention for being used to prepare off-axis parabolic mirror.
In all the appended drawings, identical reference numeral is used for indicating identical element or structure, wherein：
1- fiber array 2- reflection mirror array 3- substrate 4- accurate die pressing mold 5- light-cured resin 6- metallic reflections
Film or multilayer dielectric reflective coating
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.As long as in addition, technical characteristic involved in the various embodiments of the present invention described below
It does not constitute a conflict with each other and can be combined with each other.
Fig. 1 is the overall construction signal that the arrayed optical fiber collimators constructed by the present invention are shown as demonstration
Figure.The arrayed optical fiber collimators are collectively formed by fiber array 1 and reflection mirror array 2, and wherein fiber array is used for input light
Beam, reflection mirror array 2 then execute collimation processing to the light beam inputted.Specific explanations will be carried out one by one to its component below to say
It is bright.
As shown in Figure 1, fiber array 1 includes multiple single mode optical fibers being arranged in array, reflection mirror array 2 includes multiple same
It off-axis parabolic mirror that sample is arranged in array and keeps corresponding with the single mode optical fiber；The optical fiber of each single mode optical fiber
Section port is arranged to the focal position of corresponding off-axis parabolic mirror, is consequently for light beam being input to described
Reflection mirror array.
Reflection mirror array 2 includes multiple off axis paraboloid mirror reflections made of press moulding mode light-cured resin completely
Mirror may include additionally for example substrate 3 made of glass.Each off-axis parabolic mirror is respectively to from single mode optical fiber
Light executes collimation, is achieved in the function that the light beam of the fiber array 1 is executed to unified collimation.
Traditional moulding process for preparing curved reflector includes mainly following three classes：The first kind is ground by tradition machinery
Grinding process is by glass processing at the spherical face shape on convex surface or concave surface；Second class, which first heats glass, makes its softening, then in a mold
Forming and tempering；Third class is so that the flat glass of tempering is become according to the curve form of mirror support by modes such as mechanical presses
Shape, and fixed by binder.However, for first kind scheme, spherical reflector can only be prepared, can not be prepared with parabolic
The curved reflector of face shape and other aspheric surfaces；For the second class scheme, due to needing the technology of introducing hot bending etc, this
Kind technique energy consumption is high, cost is complicated and is difficult to accurately control, and is not suitable for large batch of industrialized production；For third class side
Case is not suitable for preparing the especially micro- camber reflection lens array of small size.Correspondingly, there is an urgent need for make further changing for this field
Into to conform better in modern production to the quality requirement of high-precision micro curved reflector.
Based on above technology understanding and research, one of the key improvements as the present invention, specifically for off axis paraboloid mirror
The processing route of speculum has carried out Curve guide impeller.This improvement mechanism is more specifically explained below in conjunction with Fig. 2
It is bright.
Specifically, first, preferable glass or ceramics hold 3 surface of substrate to make the substrate 3 of for example plate
Row roughening and plasma cleans processing.
Then, according to the face type feature of off-axis parabolic mirror, processing obtains corresponding accurate die pressing mold 4；Herein
In the process, a preferred embodiment according to the invention, it is therein to execute to can be used single-point diamond machine tooling technology
Die fabrication step.Why design in this way, the advantage for the single-point diamond machine tooling technology that can not only combine closely is next high-precision
Degree, high efficiency obtain the curved surfaces for molding of various complicated types, and the precision die can preferably with light-cured resin phase
Cooperation, thus fully relies on light-cured resin and the high-precision control of opposite type can be realized, and effectively reduce eyeglass thermal dilation belt
The problems such as deformation come.For example, the molding die and processing index preferred design are as follows：Single-point diamond machine tool controller is preferred
Support programming resolution ratio of the precision higher than 1 nanometer and the feedback resolutions of 32 micromicrons, the surface roughness of the molding die small
In 5 nanometers, form error is less than 0.3 micron；More actual test shows single-point diamond machine tooling mold and photocuring
The combination of resin-molded technique may make the yields of final products to be up to 90% or more, be significantly higher than commonly used in the art
Manipulator or fixture etc processing method.
Then, suitable light-cured resin 5 is coated to the substrate, and under normal temperature condition by the accurate die pressing mold
4 are opposed to be put on the light-cured resin 5 with the holding of the substrate 3, and gentle pressure makes light-cured resin squeeze out, corresponding complete
Required off-axis parabolic mirror face type is formed to be molded by the photocurable resin material entirely, photocuring then is executed to it
Processing.In the process, a preferred embodiment according to the invention can be given the substrate that glass material is constituted by fixing piece
To fasten, and suitable UV glue is injected and coated to the sunk area under room temperature adjusting；Then, by nickel mold and glass base
Bottom keeps being put in setting on UV glue, gentle pressure so that UV glue is squeezed out from substrate side, and by by the UV rubber mouldings swaging at institute
The camber reflection minute surface type needed.In addition, in the present embodiment, can directly apply ultraviolet light from the bottom of the substrate of glass
F irradiates, and the UV glue-lines of preset thickness are obtained after the UV adhesive curings.
Finally, resin material layer is formed by after solidification after completing to demould, on its surface preferably by vacuum coating side
Formula uniformly plates metallic reflective coating or multilayer dielectric reflective coating 6, thus to obtain final off-axis parabolic mirror product.
According to the above design, on the one hand, since the face type in whole preparation process mean camber speculum is entirely to be consolidated by light
Change what resin was formed, not only can avoid the deformation operation of mechanical presses etc in this way, but also realize more complex aspherical song
Face lens shape, and obtain the pattern precision of higher curved reflector.On the other hand, pass through the processing to entire process route
Route and key parameter etc. carry out being directed to Journal of Sex Research and design, not only can adjust acquisition in real time according to operating mode actual needs
The off-axis parabolic mirror product of multiple types and Surfaces of Unusual Shape, and light-cured resin and single-point diamond machine tooling skill
The combination of art can significantly improve the Mass accuracy of manufactured speculum, substantially reduce the production cycle, realize on-demand on the spot
The extensive duplication of formula produces.
In addition, above-mentioned process on the whole can with more short cycle, arbitrary control plane type and high-volume scale can be suitable for
The mode of production obtains all kinds of curved reflector products, can realize substrate and the diversified combination of mold, the reflection obtained
Mirror product compared with the Grinding manufacturing technology of conventional eyeglass can the arbitrary control plane type of high-precision, be provided simultaneously with it is at low cost, convenient for behaviour
The features such as controlling, is adaptable is therefore particularly suitable for needing high-precision and flexibly the optical system application of control mirror surface type
Occasion
To sum up, according to the arrayed optical fiber collimators of the invention obtained and existing microlens array etc scheme phase
Than the mirror surface-shaped of the off-axis parabolic mirror array of high-precision, high quality can be prepared by photocuring compression molding route
The advantages that looks, are provided simultaneously with that cost is substantially reduced, coupling efficiency is more preferable, collimated light beam is high-quality, no color differnece.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, not to
The limitation present invention, all within the spirits and principles of the present invention made by all any modification, equivalent and improvement etc., should all include
Within protection scope of the present invention.
Claims (8)
1. a kind of arrayed optical fiber collimators, which is characterized in that the arrayed optical fiber collimators are by fiber array (1) and speculum
Array (2) collectively forms, wherein：
The fiber array (1) includes multiple single mode optical fibers being arranged in array, and the reflection mirror array (2) includes multiple same
It the off-axis parabolic mirror that is arranged in array and keeps corresponding with the single mode optical fiber；The optical fiber of each single mode optical fiber is disconnected
Face port is arranged to the focal position of corresponding off-axis parabolic mirror, is consequently for light beam being input to described anti-
Penetrate lens array；
Each off-axis parabolic mirror of the reflection mirror array (2) executes standard to the light from the single mode optical fiber respectively
Directly, it is achieved in the function that the light beam of the fiber array (1) is executed to unified collimation.
2. arrayed optical fiber collimators as described in claim 1, which is characterized in that each off axis paraboloid mirror is reflected
It for mirror, is preferably made up of press moulding mode of light-cured resin, and has arbitrary free form surface shape.
3. arrayed optical fiber collimators as claimed in claim 2, which is characterized in that the off-axis parabolic mirror is preferably adopted
It prepares with the following methods：
(i) first, it chooses substrate and using plasma cleans substrate surface；Then, according to the face of off-axis parabolic mirror
Type feature, processing obtain corresponding accurate die pressing mold；
(ii) coat suitable light-cured resin to the substrate under normal temperature condition, and by the accurate die pressing mold with it is described
Substrate holding is opposed to be put on the light-cured resin, and gentle pressure is so that light-cured resin squeezes out, accordingly completely by described
Photocurable resin material to form required off-axis parabolic mirror face type to be molded, and photocuring processing is then executed to it；
(iii) it is formed by resin material layer after curing after completing to demould, is uniformly plated by vacuum coating mode on its surface
Upper metallic reflective coating or multilayer dielectric reflective coating, thus to obtain final off-axis parabolic mirror product.
4. arrayed optical fiber collimators as claimed in claim 3, which is characterized in that the accurate die pressing mold preferably uses single
Point diamond machine tool is processed acquisition, and its presentation has the section of multiple convexs.
5. arrayed optical fiber collimators as claimed in claim 4, which is characterized in that the convex is designed to off axis paraboloid mirror
Construction, and its quantity and the quantity of the single mode optical fiber are consistent.
6. the arrayed optical fiber collimators as described in claim 3-5 any one, which is characterized in that the substrate is preferably glass
Glass material is made.
7. the arrayed optical fiber collimators as described in claim 3-6 any one, which is characterized in that the light-cured resin is excellent
It is selected as UV glue, and directly by applying ultraviolet light irradiation come curing molding.
8. arrayed optical fiber collimators as claimed in claim 7, which is characterized in that formed after the solidification for the completion
UV glue-lines for, thickness is preferably 10 microns~100 microns；For vacuum coating processing, preferably complete
Golden film is plated at the outermost for being formed by UV glue-lines after solidification, and its thickness is preferably set to 100 nanometers~200 nanometers.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810061917.0A CN108319033A (en) | 2018-01-23 | 2018-01-23 | A kind of arrayed optical fiber collimators |
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| CN201810061917.0A CN108319033A (en) | 2018-01-23 | 2018-01-23 | A kind of arrayed optical fiber collimators |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109412021A (en) * | 2018-11-26 | 2019-03-01 | 中国工程物理研究院应用电子学研究所 | A kind of precise space beam merging apparatus based on collimation reorientation off-axis parabolic mirror |
| CN112255815A (en) * | 2020-03-23 | 2021-01-22 | 中国科学院上海光学精密机械研究所 | Optical fiber collimator |
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| CN107505676A (en) * | 2017-10-19 | 2017-12-22 | 黄石晨信光电股份有限公司 | A kind of multi-channel optical fibre synchronization automatic coupling device |
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Effective date of registration: 20190813 Address after: 430074 Guanggu New World 8 7-4, 349 Guanshan Avenue, Hongshan District, Wuhan City, Hubei Province Applicant after: Song Wuzhou Address before: Room 205, Building No. 5, Huashiyuan North Road, Donghu New Technology Development Zone, Wuhan City, Hubei Province Applicant before: Wuhan Wright Optoelectronic Technology Co., Ltd. |
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