CN108710200A - A kind of optical filter of flat-head type - Google Patents
A kind of optical filter of flat-head type Download PDFInfo
- Publication number
- CN108710200A CN108710200A CN201810713123.8A CN201810713123A CN108710200A CN 108710200 A CN108710200 A CN 108710200A CN 201810713123 A CN201810713123 A CN 201810713123A CN 108710200 A CN108710200 A CN 108710200A
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- China
- Prior art keywords
- optical filter
- light
- fiber
- eyeglass
- optic
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- 230000003287 optical effect Effects 0.000 title claims abstract description 60
- 241000755266 Kathetostoma giganteum Species 0.000 title claims abstract description 11
- 239000000835 fiber Substances 0.000 claims abstract description 27
- 238000001914 filtration Methods 0.000 claims abstract description 22
- 230000005540 biological transmission Effects 0.000 claims abstract description 12
- 241001270131 Agaricus moelleri Species 0.000 claims abstract description 11
- 238000012545 processing Methods 0.000 claims abstract description 10
- 238000010586 diagram Methods 0.000 description 7
- 239000013307 optical fiber Substances 0.000 description 5
- 238000004891 communication Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
-
- 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
- G02B27/10—Beam splitting or combining systems
Abstract
The present invention relates to optical filter fields, and in particular to a kind of optical filter of flat-head type.The optical filter includes optic fibre input end and fiber-optic output, and the optically filtering path being arranged between optic fibre input end and fiber-optic output, the optically filtering path includes collimation lens, grating and wavelength tuning module, and the optical filter further includes that the light being arranged in optically filtering path becomes eyeglass.The light becomes eyeglass and light path is divided into two-way, forms two different beam Gaussian beams of two beam center wavelength, and the two beams Gaussian beam is superimposed to form a branch of flat top beam by processing module again；The optical filter is additionally provided with shell, and the collimation lens, transmission grating, wavelength tuning module and light become eyeglass and is arranged in the cavity of shell, realizes the filtering of tunable flat-top, and miniaturization simple in structure.
Description
Technical field
The present invention relates to optical filter fields, and in particular to a kind of optical filter of flat-head type.
Background technology
Optical filter is the instrument for carrying out wavelength selection, it can pick out required wave from numerous wavelength
It is long, and the light in addition to this wavelength will be rejected and pass through.
In modern intelligent optical communication net, tunable optical filter is indispensable device, and flat-top, miniaturization are them
Development trend.The optically filtering in optical fiber communication network may be implemented there are mainly four types of scheme from operation principle, be base respectively
In optical fiber Bragg raster structure, it is based on film filtering slice, based on Fabry-Perot resonant cavities and based on Free Space Optics
The tunable optic filter of structure.
But the equal existing defects of said program, specifically：
1. based on the optical filter of optical fiber Bragg raster structure, all optical fibre structure and flat-top may be implemented, but compare
Hardly possible tuning.
2. tunable and flat-top may be implemented in the optical filter based on film filtering slice, but device is complicated, more difficult
Miniaturization.
3. it is simple in structure based on the optical filter of Fabry-Perot resonant cavities, but job stability is poor.
4. based on the tunable optic filter of Free Space Optics structure, due to its centre wavelength range is wide, tuning precision is high,
At low cost, so the filter is current most widely used structure, but its passband is generally Gaussian, to realize flat-top
Slit diaphragm may be used, but structure is more complex, size is larger.
So a kind of tunable optical filter of miniaturization flat-head type of design is that primary study is asked always for this field
Topic.
Invention content
The technical problem to be solved in the present invention is, for the drawbacks described above of the prior art, provides a kind of light of flat-head type
Filter is learned, overcomes that not tunable, device be complicated and the defect of the operation is stable performance difference.
To solve the technical problem, the present invention provides a kind of optical filter of flat-head type, and the optical filter includes
Optic fibre input end and fiber-optic output, and the optically filtering path that is arranged between optic fibre input end and fiber-optic output, institute
It includes collimation lens, transmission grating and wavelength tuning module to state optically filtering path, and the optical filter further includes that setting exists
Light in optically filtering path becomes eyeglass, the light become eyeglass include by the plane mirror of two intersections, two plane mirrors along
The median centre in optically filtering path is symmetrical arranged.
Wherein, preferred version is that the light becomes eyeglass as prism, and the plane mirror is the two sides of prism, described three
Prism is set to any position in optically filtering path.
Wherein, it is 160~180 degree that preferred version, which is the corner angle of the two sides composition of the prism,.
Wherein, preferred version is between the thickness of the prism is 0.5~20mm.
Wherein, preferred version is that the light becomes eyeglass as reflecting optics, and the wavelength tuning module includes MEMS modules, institute
It states light and becomes the two plane mirrors setting of eyeglass in MEMS modules.
Wherein, it is 160~180 degree that preferred version, which is the angle of intersection of described two plane mirrors,.
Wherein, preferred version is the speculum that the wavelength tuning module includes MEMS modules and is connect with MEMS modules,
The optical filter further includes the double-fiber connector being connect respectively with optic fibre input end and fiber-optic output.
Wherein, preferred version is between the adjustable range of the MEMS modules is 0~10 degree.
Wherein, it further includes the processing module being connect with fiber-optic output, the place that preferred version, which is the optical filter,
Reason module is superimposed the Gaussian beam exported from fiber-optic output to form flat top beam.
Optical filter according to claim 1, it is characterised in that：The optical filter includes shell, described
Collimation lens, transmission grating, wavelength tuning module and light become eyeglass and are arranged in the cavity of shell, the optic fibre input end
It is arranged by double-fiber connector with fiber-optic output and is connected on shell, and with the cavity of shell.
The beneficial effects of the present invention are compared with prior art, the present invention is by being arranged a kind of optics filter of flat-head type
Wave device, the optical filter are provided with light and become eyeglass, and the light becomes eyeglass and light path is divided into two-way, forms two beam center wavelength
Two different beam Gaussian beams；Further, the optical filter is additionally provided with processing module, and the two beams Gaussian beam is logical
Processing module is crossed to be superimposed to form flat top beam；Finally, the optical filter is additionally provided with shell, the collimation lens, transmission
Grating, wavelength tuning module and light become eyeglass and are arranged in the cavity of shell, the optic fibre input end and fiber-optic output
It is arranged by double-fiber connector and is connected on shell, and with the cavity of shell, realizes the filtering of tunable flat-top, and simple in structure
Miniaturization.
Description of the drawings
Present invention will be further explained below with reference to the attached drawings and examples, in attached drawing：
Fig. 1 is the structural schematic diagram of optical filter embodiment one of the present invention；
Fig. 2 is the structural schematic diagram of optical filter embodiment two of the present invention；
Fig. 3 is the structural schematic diagram of optical filter embodiment three of the present invention；
Fig. 4 is the structural schematic diagram of optical filter example IV of the present invention；
Fig. 5 is the structural schematic diagram of optical filter embodiment five of the present invention；
Fig. 6 is the structural schematic diagram of processing module of the present invention；
Fig. 7 is that the present invention is based on the structural schematic diagrams of the optical filter of shell.
Specific implementation mode
In conjunction with attached drawing, elaborate to presently preferred embodiments of the present invention.
As shown in Figure 1, the present invention provides a kind of preferred embodiment of the optical filter of flat-head type.
A kind of optical filter of flat-head type, the optical filter include optic fibre input end 111 and fiber-optic output
112, and the optically filtering path that is arranged between optic fibre input end 111 and fiber-optic output 112, the optically filtering path
Including collimation lens 120, transmission grating 130 and wavelength tuning module, the optical filter further includes being arranged in optically filtering
Light in path becomes eyeglass 100, and it includes by the plane mirror of two intersections that the light, which becomes eyeglass 100, and two plane mirrors are along light
The median centre for learning filter paths is symmetrical arranged.
Two kinds of preferred versions are specifically provided,
Scheme one, and with reference to figure 1, the wavelength tuning module includes MEMS modules 150 and is connect with MEMS modules 150
Speculum 140, the optical filter include the double-fiber connector being connect respectively with optic fibre input end 111 and 112 end of optical fiber output
110。
Specifically, light is injected from the optic fibre input end 111 of double-fiber connector 110, is divided into two beam centers by optical mirror slip 100
Wavelength has the Gaussian beam of certain gap, by collimation lens 120 collimation after by transmission grating 130 by the light of different wave length from
It is injected after being separated in angle on the speculum 140 being arranged in MEMS modules 150, then returned light path original road by speculum 140
It returns, return light by collimation lens 120 by being converged again after transmission grating 130, after convergence in backtracking to double-fiber connector 110
Fiber-optic output 112.
Scheme two, and with reference to figure 5, the wavelength tuning module includes MEMS modules 150 and is connect with MEMS modules 150
Refracting telescope 140.
Specifically, light is injected from optic fibre input end 111, by light become eyeglass 100 be divided into two beam center wavelength have it is certain poor
Away from Gaussian beam, by collimation lens 120 collimation after by transmission grating 130 by the light of different wave length from angle separate after
It injects on the refracting telescope 140 being arranged in MEMS modules 150, then light beam is incident upon by fiber-optic output by refracting telescope 140
112。
In the present embodiment, the adjustable range of the MEMS modules is 0~10 degree.
In the present embodiment, light change eyeglass intersects angled plane mirror by two sides and forms, two plane mirrors
It is symmetrical arranged along the median centre in optically filtering path.
As shown in Figure 1 to Figure 3, the present invention provides a kind of preferred embodiment of the optical filter based on prism.
The light becomes eyeglass 100 as prism.Prism is the transparent body that optically cross section is triangle.It is by saturating
Section that bright material is made optical instrument triangular in shape, belongs to one kind of dispersing prism, polychromatic light can be made to pass through prism
Shi Fasheng dispersions.
The polychromatic light that sunlight is made of the light of many different frequencies, these light are different for the refractive index of same medium,
After light beam enters prism, the angle that the deflects different refractions (law of refraction of light：The sine of incidence angle is proportional to folding
The sine of firing angle, proportionality coefficient are refractive index), refractive index depends on the rate in the medium of light, depends on the frequency of light indirectly
Rate.The frequency of light is bigger, and wavelength is smaller, and the rate of decaying in the medium is bigger, and rate in the medium is smaller, and refractive index is just
It is bigger.So the light beam that a direction is advanced originally will be broken down by the tactic light belt of deflection angle.(deflection angle=
Refraction angle-incidence angle)
Referring to figs. 1 to Fig. 3, the prism 100 can be arranged in three positions, respectively double-fiber connector 110 and collimation
Between lens 120, between collimation lens 120 and transmission grating 130 and between transmission grating 130 and wavelength tuning module.
Preferably, the corner angle that the two sides of the prism are constituted is 160~180 degree.The thickness of the prism
Between 0.5~20mm.
As shown in figure 4, the present invention provides a kind of preferred embodiment of the optical filter based on reflecting optics.
The light becomes eyeglass as reflecting optics 100, and the wavelength tuning module includes MEMS modules 150.
With reference to figure 4, two plane mirrors that the light becomes eyeglass 100 are arranged in MEMS modules 150, and two planes
The angle of intersection of mirror is 160~180 degree.
As shown in fig. 6, the present invention provides a kind of preferred embodiment of the optical filter based on processing module.
With reference to figure 6, the optical filter further includes the processing module 160 being connect with fiber-optic output 112, the processing
Module 160 is superimposed the Gaussian beam exported from fiber-optic output 112 to form flat top beam.
As shown in fig. 7, the present invention provides a kind of preferred embodiment of the optical filter based on shell.
With reference to figure 7, the optical filter includes shell 200, the collimation lens 120, transmission grating 130, wavelength tune
Humorous module and light become eyeglass 100 and are arranged in the cavity of shell 200, and the optic fibre input end 111 and fiber-optic output 112 are logical
The setting of double-fiber connector 110 is crossed to be connected on shell, and with the cavity of shell 200.
In conclusion the above is merely preferred embodiments of the present invention, being not intended to limit the scope of the present invention.
Any modification made all within the spirits and principles of the present invention, equivalent replacement, improve etc., it should be included in the guarantor of the present invention
It protects in range.
Claims (10)
1. a kind of optical filter of flat-head type, the optical filter includes optic fibre input end and fiber-optic output, Yi Jishe
Set the optically filtering path between optic fibre input end and fiber-optic output, the optically filtering path includes collimation lens, thoroughly
Penetrate grating and wavelength tuning module, it is characterised in that：The optical filter further includes the light being arranged in optically filtering path
Become eyeglass, the light become eyeglass include by the plane mirror of two intersections, two plane mirrors along optically filtering path center line
Center symmetric setting.
2. optical filter according to claim 1, it is characterised in that：The light change eyeglass is prism, the plane
Mirror is the two sides of prism, and the prism is set to any position in optically filtering path.
3. optical filter according to claim 2, it is characterised in that：The apex angle angle that the two sides of the prism are constituted
Degree is 160~180 degree.
4. optical filter according to claim 2, it is characterised in that：The thickness of the prism be 0.5~20mm it
Between.
5. optical filter according to claim 1, it is characterised in that：The light change eyeglass is reflecting optics, the wave
Long tuner module includes MEMS modules, and two plane mirrors that the light becomes eyeglass are arranged in MEMS modules.
6. optical filter according to claim 5, it is characterised in that：The angle of intersection of described two plane mirrors is 160
~180 degree.
7. optical filter according to claim 1, it is characterised in that：The wavelength tuning module include MEMS modules and
The speculum being connect with MEMS modules, the optical filter further include being connect respectively with optic fibre input end and fiber-optic output
Double-fiber connector.
8. optical filter according to claim 7, it is characterised in that：The adjustable range of the MEMS modules is 0~10
Between degree.
9. optical filter according to any one of claims 1 to 8, it is characterised in that：The optical filter further include with
The processing module of fiber-optic output connection, the processing module are superimposed the Gaussian beam exported from fiber-optic output to form flat-top
Light beam.
10. optical filter according to claim 1, it is characterised in that：The optical filter includes shell, the standard
Straight lens, transmission grating, wavelength tuning module and light become eyeglass and are arranged in the cavity of shell, the optic fibre input end and
Fiber-optic output is arranged by double-fiber connector to be connected on shell, and with the cavity of shell.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810713123.8A CN108710200A (en) | 2018-06-29 | 2018-06-29 | A kind of optical filter of flat-head type |
| PCT/CN2018/110046 WO2020000773A1 (en) | 2018-06-29 | 2018-10-12 | Flat-topped optical filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810713123.8A CN108710200A (en) | 2018-06-29 | 2018-06-29 | A kind of optical filter of flat-head type |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108710200A true CN108710200A (en) | 2018-10-26 |
Family
ID=63873279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810713123.8A Pending CN108710200A (en) | 2018-06-29 | 2018-06-29 | A kind of optical filter of flat-head type |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN108710200A (en) |
| WO (1) | WO2020000773A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110212977A (en) * | 2019-06-10 | 2019-09-06 | 昂纳信息技术（深圳）有限公司 | A kind of wavelength and power monitor device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102608708A (en) * | 2012-03-05 | 2012-07-25 | 华中科技大学 | Wavelength-adjustable optical filter |
| CN103869510A (en) * | 2012-12-18 | 2014-06-18 | 福州高意通讯有限公司 | Tunable filtering structure and filter |
| CN104090362A (en) * | 2014-07-28 | 2014-10-08 | 华中科技大学 | Tunable flat top narrow-band type optical fiber based on MEMS |
| CN106019580A (en) * | 2016-07-19 | 2016-10-12 | 华中科技大学 | Flexible wide optical filter with super-wide tuning range |
| CN208752310U (en) * | 2018-06-29 | 2019-04-16 | 昂纳信息技术（深圳）有限公司 | A kind of optical filter of flat-head type |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6715936B2 (en) * | 2002-01-22 | 2004-04-06 | Megasense, Inc. | Photonic component package and method of packaging |
| CN105785515A (en) * | 2014-12-26 | 2016-07-20 | 福州高意通讯有限公司 | Flat-top optical filter having adjustable bandwidth |
| CN206757098U (en) * | 2017-06-13 | 2017-12-15 | 福州高意通讯有限公司 | A kind of MEMS-type can adjust optical filter |
-
2018
- 2018-06-29 CN CN201810713123.8A patent/CN108710200A/en active Pending
- 2018-10-12 WO PCT/CN2018/110046 patent/WO2020000773A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102608708A (en) * | 2012-03-05 | 2012-07-25 | 华中科技大学 | Wavelength-adjustable optical filter |
| CN103869510A (en) * | 2012-12-18 | 2014-06-18 | 福州高意通讯有限公司 | Tunable filtering structure and filter |
| CN104090362A (en) * | 2014-07-28 | 2014-10-08 | 华中科技大学 | Tunable flat top narrow-band type optical fiber based on MEMS |
| CN106019580A (en) * | 2016-07-19 | 2016-10-12 | 华中科技大学 | Flexible wide optical filter with super-wide tuning range |
| CN208752310U (en) * | 2018-06-29 | 2019-04-16 | 昂纳信息技术（深圳）有限公司 | A kind of optical filter of flat-head type |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110212977A (en) * | 2019-06-10 | 2019-09-06 | 昂纳信息技术（深圳）有限公司 | A kind of wavelength and power monitor device |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020000773A1 (en) | 2020-01-02 |
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Address after: No.35 Cuijing Road, Pingshan District, Shenzhen City, Guangdong Province Applicant after: Ona Technology (Shenzhen) Group Co.,Ltd. Address before: No.35 Cuijing Road, Pingshan District, Shenzhen City, Guangdong Province Applicant before: O-NET COMMUNICATIONS (SHENZHEN) Ltd. |