CN206818914U - Reflection-type wavelength division multiplexer based on film filtering slice - Google Patents
Reflection-type wavelength division multiplexer based on film filtering slice Download PDFInfo
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- CN206818914U CN206818914U CN201720330053.9U CN201720330053U CN206818914U CN 206818914 U CN206818914 U CN 206818914U CN 201720330053 U CN201720330053 U CN 201720330053U CN 206818914 U CN206818914 U CN 206818914U
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- 239000013307 optical fiber Substances 0.000 claims abstract description 77
- 239000011521 glass Substances 0.000 claims abstract description 47
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- 239000000835 fiber Substances 0.000 claims description 11
- 230000008878 coupling Effects 0.000 claims description 6
- 238000010168 coupling process Methods 0.000 claims description 6
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- 230000000694 effects Effects 0.000 claims description 4
- 238000005374 membrane filtration Methods 0.000 claims description 3
- 239000006117 anti-reflective coating Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 3
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- 238000005516 engineering process Methods 0.000 description 7
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Abstract
It the utility model is related to optical fiber telecommunications system, specially a kind of reflection-type wavelength division multiplexer based on film filtering slice, it is characterized in that：Including four patch cords, coupled lens, film filtering slice, speculum, the first inner glass tube, the second inner glass tube, interior glass bar and outer glass pipe.Four patch cord, including common port optical fiber, reflection end optical fiber, transmission end optical fiber, backup optical fiber.The length of coupled lens is 2.5 3.5mm, and sphere curvature radius is 1.4 1.5mm, and the thickness of film filtering slice is 0.5 1.0mm.The utility model optimizes light path design transmission direction, reduces device volume, reduces material consumption, reduces cost of manufacture, unidirectionally goes out optical fiber.
Description
Technical field
It the utility model is related to the optical passive component of optical fiber telecommunications system, specially a kind of reflection based on film filtering slice
Type wavelength division multiplexer.
Background technology
Existing film-type wavelength division multiplex device is a kind of passive device commonly used in modern optical networks, and dielectric film type is filtered
Ripple device mainly selectively passes through the light of specific wavelength by the filter plate in device.Common film-type wavelength division multiplex device
General is three port devices, including common port, reflection end and transmission end, in use, inputting complex wave by the optical fiber of common port
Long light is simultaneously incided on filter plate through GRIN Lens, and reflection wavelength light returns to reflection end optical fiber, and transmission peak wavelength light penetrates filter
Wave plate enters in transmission end optical fiber through Lens Coupling.Such layout, which causes individual devices, needs two collimaters, and reflects
End is also different from transmission end fiber direction so that device needs to occupy larger physical space when being packaged in the module.
Utility model content
For overcome the deficiencies in the prior art, there is provided a kind of reflection-type wavelength division multiplexer based on film filtering slice technology.
It optimizes light path design transmission direction, reduces volume, reduces Material Cost, and unidirectionally go out optical fiber.
A kind of reflection-type wavelength division multiplexer based on film filtering slice, including the filtering of four patch cords, coupled lens, film
Piece, speculum, the first inner glass tube, the second inner glass tube, interior glass bar and outer glass pipe；It is inserted in one end of outer glass pipe inner chamber
Second inner glass tube, four patch cords are inserted in the second inner glass tube；Four patch cords specifically include common port optical fiber, reflection end light
Fine, transmission end optical fiber and backup optical fiber；The other end of second inner glass tube inner chamber is inserted in coupled lens；Four patch cords and coupling are saturating
Mirror forms four fine collimaters, and the coupled lens sphere end in four fine collimaters is embedded in the first inner glass tube, the first inner glass tube
The other end is provided with film filtering slice；The other end of outer glass pipe inner chamber is inserted in interior glass bar, and interior glass bar is inner to be provided with speculum.
The described reflection-type wavelength division multiplexer based on film filtering slice, the film filtering slice have two light pass surfaces, with
The adjacent light pass surface of first inner glass tube is provided with antireflective coating, and it is the transmitance for expanding any wavelength light beam that it, which is acted on, with putting down
Mirror adjacent light pass surface in face is provided with wavelength-division multiplex film layer, and its effect is to make wavelength be λPLight beam penetrate, it is λ to make wavelengthRLight
Beam reflects.
The described reflection-type wavelength division multiplexer based on film filtering slice, speculum have a reflective surface, which is provided with height
Anti- film layer, it is the light beam for reflecting any wavelength that it, which is acted on,.
The reflection-type wavelength division multiplexer based on film filtering slice, in x/y plane, four patch cords have four optical fiber ends
Mouthful：Common port optical fiber is located at the upper left corner, and reflection end optical fiber is located at the lower right corner, and transmission end optical fiber is located at the upper right corner, backup optical fiber position
In the lower left corner；Common port optical fiber sends the light beam for carrying two wavelength X R and λ P, and wherein light path is through common port optical fiber and reflection end
Optical fiber decomposites wavelength X R to come, and wavelength X P is decomposited by light path through common port optical fiber and transmission end optical fiber.
The reflection-type wavelength division multiplexer based on film filtering slice, common port optical fiber in four patch cords, reflection end optical fiber,
Transmission end optical fiber and backup optical fiber are parallel two-by-two, and adjacent two fibre cores spacing is 125 um.
The reflection-type wavelength division multiplexer based on film filtering slice, the length of coupled lens is 2.5-3.5mm, and sphere is bent
Rate radius is 1.4-1.5mm, and the thickness of film filtering slice is 0.5-1.0mm, and the thickness of speculum 8 is 0.5-1.0mm.
When the utility model uses：
The divergent beams of the common port fibre optical transmission of four patch cords, carry two wavelength X R and λ P.By coupled lens
Converging action, a collimated incident beam with angle is produced, now the collimated incident beam still carries two wavelength Xs R and λ
P。
When two wavelength X R and λ P of carrying collimated light beam incides film filtering slice, its wavelength passes through for the light beam of λ R components
Reverse transfer after being reflected by light pass surface, collimated reflected beam are that collimated reflected beam becomes acerous after coupled lens are assembled
Degree and the convergent beam for carrying λ R, are coupled into reflection end optical fiber.
For collimated incident beam, after its wavelength passes through light pass surface for the light beam of λ P compositions, collimation penetrates light beam by reflective
Face is reflected back film filtering slice, and direction is to the left.Collimated light beam again passes by film filtering slice and transmits rear to constant, with angle, θ
Coupled light lens.Become the convergent beam of non-angular after coupled lens are assembled, be coupled into transmission end optical fiber.
The utility model has following technical characterstic：Reflection end and transmission end optical fiber are in device homonymy；Compared to existing skill
Art can save collimator material, reduce cost, reduce volume, optimization fiber direction；
The beneficial effects of the utility model are：Optimize optic path direction, reduce volume, reduce device cost, and unidirectionally
Go out optical fiber.
Brief description of the drawings
Fig. 1 is the overall structure diagram of the utility model embodiment.
Fig. 2 is the utility model embodiment optical path-tracing schematic diagram.
Fig. 3 a are four patch cord priority scheme diagrammatic cross-sections of the utility model embodiment in x/y plane.
Fig. 3 b are four patch cord backup scenario diagrammatic cross-sections of the utility model embodiment in x/y plane.
Fig. 4 a are index path of the utility model embodiment in xz planes
Fig. 4 b are index path of the utility model embodiment in yz planes.
Embodiment
The utility model is further illustrated below by way of specific embodiment.
As shown in figure 1, a kind of reflection-type wavelength division multiplexer based on film filtering slice technology, including four patch cords 1, coupling
Lens 6, film filtering slice 7, speculum 8, the first inner glass tube 9, the second inner glass tube 10, interior glass bar 11 and outer glass pipe
12。
The second inner glass tube 10 is inserted in one end of the inner chamber of outer glass pipe 12, and a four smooth tails are inserted in the second inner glass tube 10
Fibre 1.Four patch cords 1 specifically include common port optical fiber 2, reflection end optical fiber 3, transmission end optical fiber 4 and backup optical fiber 5.Glass in second
The other end of the inner chamber of glass pipe 10 is inserted in coupled lens 6.Four patch cords 1 and coupled lens 6 form four fine collimaters, four fine collimaters
In coupled lens sphere end be embedded in the first inner glass tube 9, the other end of the first inner glass tube is provided with film filtering slice 7.
Gap between four patch cords 1 and coupled lens 6 should meet so that being focused on by the collimated light beam 202 of lens thin
In the light pass surface 702 of membrane filtration wave plate 7, the gap is generally 0.15-0.25mm.
The other end of the inner chamber of outer glass pipe 12 is inserted in interior glass bar 11, and interior glass bar is inner to be provided with speculum 8.
As shown in Fig. 2 the reflection-type wavelength division multiplexer based on film filtering slice technology, it is characterized in that：It is described thin
Membrane filtration wave plate 7 has two light pass surfaces, and the light pass surface 701 adjacent with the first inner glass tube plating anti-reflection film, it is to expand to appoint that it, which is acted on,
The transmitance of meaning wavelength light beam.The light pass surface 702 adjacent with level crossing electroplates wavelength-division multiplex film layer, and its effect is to make wavelength be λP
Light beam penetrate, it is λ to make wavelengthRLight beam reflection.
The described reflection-type wavelength division multiplexer based on film filtering slice technology, it is characterized in that：Speculum 8 have one it is reflective
Face 801, high-reflecting film is electroplated, it is the light beam for reflecting any wavelength that it, which is acted on,.
As shown in Figure 3 a, the reflection-type wavelength division multiplexer based on film filtering slice technology, it is characterized in that：In x/y plane
Interior (z-axis sensing paper), four patch cords have four fiber ports：Common port optical fiber 2 is located at the upper left corner, and reflection end optical fiber 3 is located at
The lower right corner, transmission end optical fiber 4 are located at the upper right corner, and backup optical fiber 5 is located at the lower left corner.Common port optical fiber 2, which is sent, carries two wavelength
λRAnd λPLight beam.Wherein light path 2 → 3 is by wavelength XRDecomposite and, light path 2 → 4 is by wavelength XPDecomposite and.
As shown in Figure 3 b, the effect of backup optical fiber 5 is：, can be again when reflection end optical fiber 3 damages in use
Define fiber distribution.Now using optical fiber 4 as common port, optical fiber 2 is used as transmission end, and optical fiber 5 is used as reflection end.Wherein light path
4 → 5 decomposite wavelength X R to come, and light path 4 → 2 decomposites wavelength X P to come.
As best shown in figures 3 a and 3b, the reflection-type wavelength division multiplexer based on film filtering slice technology, it is characterized in that：Four light
Common port optical fiber 2, reflection end optical fiber 3, transmission end optical fiber 4 and backup optical fiber 5 are parallel two-by-two in tail optical fiber, and adjacent two fibre cores spacing is
125 um。
The divergent beams 201 that the common port optical fiber 2 of four patch cords is launched, carry two wavelength XsRAnd λP.By coupled lens
6 converging action, a collimated incident beam 202 with angle is produced, now the collimated incident beam 202 still carries two
Wavelength XRAnd λP。
As shown in fig. 4 a, in xz planes, two wavelength Xs are carriedRAnd λPCollimated light beam 202 incide film filtering slice 7
When, its wavelength is λRReverse transfer after the light beam of composition reflects via light pass surface 702, collimated reflected beam 302, this light beam warp
After overcoupling lens 6 are assembled, become non-angular and carry λRConvergent beam 301, be coupled into reflection end optical fiber 3.
For collimated incident beam 202, its wavelength is λPAfter the light beam of composition passes through light pass surface 702, collimation penetrates light beam
402 are reflected back film filtering slice 7 by reflective surface 801, and direction is to the left.After collimated light beam 402 again passes by the transmission of film filtering slice 7
Direction is constant, with angle, θ coupled light lens 6.Become the convergent beam 401 of non-angular, coupling after the convergence of coupled lens 6
Enter transmission end optical fiber 4.
In xz planes, due to the very thin thickness of film filtering slice 7, the gap between film filtering slice 7 and speculum 8 is very
It is small, so collimated reflected beam 302 and collimation transmitted light beam 402 are very close in xz planes, reflection end optical fiber 3 and transmission end
Optical fiber 4 is also very close in xz planes.In order to facilitate description, substantially exaggerate in Fig. 4 a.
As shown in Figure 4 b, in yz planes, two wavelength Xs are carriedRAnd λPCollimated light beam 202 incide film filtering slice 7
When, its wavelength is λRReverse transfer after the light beam of composition reflects via light pass surface 702, collimated reflected beam 302, this light beam warp
After overcoupling lens 6 are assembled, become non-angular and carry λRConvergent beam 301, be coupled into reflection end optical fiber 3.
For collimated incident beam 202, its wavelength is λPAfter the light beam of composition passes through light pass surface 702, collimation penetrates light beam
402 are reflected back film filtering slice 7 by reflective surface 801, and direction is to the left.After collimated light beam 402 again passes by the transmission of film filtering slice 7
Direction is constant, with angle, θ coupled light lens 6.Become the convergent beam 401 of non-angular, coupling after the convergence of coupled lens 6
Enter transmission end optical fiber 4.
In yz planes, the transmission end light that light beam 402 is reflected back sustained height via speculum 8 is penetrated in order that must collimate
Fibre 4, it is vertical that the angle of speculum 8 should penetrate light beam 402 with collimation.Collimation transmitted light beam 402 becomes the convergent beam of non-angular
After 401, very close with the divergent beams 201 of common port transmitting, common port optical fiber 2 and transmission end optical fiber 4 are in yz planes
Closely.Light beam 401 is represented by dashed line in Fig. 4 b.
Claims (6)
1. a kind of reflection-type wavelength division multiplexer based on film filtering slice, it is characterized in that：Including four patch cords, coupled lens, thin
Membrane filtration wave plate, speculum, the first inner glass tube, the second inner glass tube, interior glass bar and outer glass pipe；The one of outer glass pipe inner chamber
The second inner glass tube is inserted at end, and four patch cords are inserted in the second inner glass tube；Four patch cords specifically include common port optical fiber, reflection
Hold optical fiber, transmission end optical fiber and backup optical fiber；The other end of second inner glass tube inner chamber is inserted in coupled lens；Four patch cords and coupling
Close lens and form four fine collimaters, the coupled lens sphere end in four fine collimaters is embedded in the first inner glass tube, glass in first
The other end of pipe is provided with film filtering slice；The other end of outer glass pipe inner chamber is inserted in interior glass bar, and interior glass bar is inner to be provided with instead
Penetrate mirror.
2. the reflection-type wavelength division multiplexer based on film filtering slice as claimed in claim 1, it is characterized in that：The film filtering
Piece has two light pass surfaces, and the light pass surface adjacent with the first inner glass tube is provided with antireflective coating, and it is to expand any wavelength that it, which is acted on,
The transmitance of light beam, the light pass surface adjacent with level crossing are provided with wavelength-division multiplex film layer, and its effect is to make wavelength be λPLight beam
Penetrate, it is λ to make wavelengthRLight beam reflection.
3. the reflection-type wavelength division multiplexer based on film filtering slice as claimed in claim 1, it is characterized in that：Speculum has one
Reflective surface, high-reflecting film layer is which is provided with, it is the light beam for reflecting any wavelength that it, which is acted on,.
4. the reflection-type wavelength division multiplexer based on film filtering slice as claimed in claim 1, it is characterized in that：In x/y plane, four
Patch cord has four fiber ports：Common port optical fiber is located at the upper left corner, and reflection end optical fiber is located at the lower right corner, and transmission end optical fiber is located at
The upper right corner, backup optical fiber are located at the lower left corner；Common port optical fiber sends the light beam for carrying two wavelength X R and λ P, and wherein light path is through public affairs
Optical fiber and reflection end optical fiber is held to decomposite wavelength X R to come altogether, light path decomposes wavelength X P through common port optical fiber and transmission end optical fiber
Out.
5. the reflection-type wavelength division multiplexer based on film filtering slice as claimed in claim 1, its spy be for：It is public in four patch cords
End optical fiber, reflection end optical fiber, transmission end optical fiber and backup optical fiber are parallel two-by-two, and adjacent two fibre cores spacing is 125 um.
6. the reflection-type wavelength division multiplexer based on film filtering slice as claimed in claim 1, its spy be for：The length of coupled lens
For 2.5-3.5mm, sphere curvature radius 1.4-1.5mm, the thickness of film filtering slice is 0.5-1.0mm, and the thickness of speculum 8 is
0.5-1.0mm。
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720330053.9U CN206818914U (en) | 2017-03-31 | 2017-03-31 | Reflection-type wavelength division multiplexer based on film filtering slice |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720330053.9U CN206818914U (en) | 2017-03-31 | 2017-03-31 | Reflection-type wavelength division multiplexer based on film filtering slice |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108562975A (en) * | 2018-03-15 | 2018-09-21 | 东莞隆润光学技术有限公司 | A kind of lamination reflection type optical fiber integrated device |
| CN109212669A (en) * | 2018-09-28 | 2019-01-15 | 中通服咨询设计研究院有限公司 | A kind of ultra-compact multichannel wavelength division multiplexer for 5G optical-fiber network |
| CN109212670A (en) * | 2018-10-10 | 2019-01-15 | 武汉光迅科技股份有限公司 | A kind of wavelength division multiplex device and corresponding optical module |
| CN111367022A (en) * | 2020-04-30 | 2020-07-03 | 广东三石园科技有限公司 | Compact optical device |
| CN111751931A (en) * | 2019-03-29 | 2020-10-09 | 福州高意通讯有限公司 | Small wavelength division multiplexer |
| CN113253391A (en) * | 2021-05-28 | 2021-08-13 | 闽都创新实验室 | 5G forward wavelength division multiplexing module based on optical fiber array and assembling method thereof |
-
2017
- 2017-03-31 CN CN201720330053.9U patent/CN206818914U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108562975A (en) * | 2018-03-15 | 2018-09-21 | 东莞隆润光学技术有限公司 | A kind of lamination reflection type optical fiber integrated device |
| CN109212669A (en) * | 2018-09-28 | 2019-01-15 | 中通服咨询设计研究院有限公司 | A kind of ultra-compact multichannel wavelength division multiplexer for 5G optical-fiber network |
| CN109212669B (en) * | 2018-09-28 | 2020-05-19 | 中通服咨询设计研究院有限公司 | Ultra-compact multi-path wavelength division multiplexer for 5G optical network |
| CN109212670A (en) * | 2018-10-10 | 2019-01-15 | 武汉光迅科技股份有限公司 | A kind of wavelength division multiplex device and corresponding optical module |
| CN109212670B (en) * | 2018-10-10 | 2020-05-12 | 武汉光迅科技股份有限公司 | Wavelength division multiplexing device and corresponding optical module |
| CN111751931A (en) * | 2019-03-29 | 2020-10-09 | 福州高意通讯有限公司 | Small wavelength division multiplexer |
| CN111367022A (en) * | 2020-04-30 | 2020-07-03 | 广东三石园科技有限公司 | Compact optical device |
| CN113253391A (en) * | 2021-05-28 | 2021-08-13 | 闽都创新实验室 | 5G forward wavelength division multiplexing module based on optical fiber array and assembling method thereof |
| CN113253391B (en) * | 2021-05-28 | 2022-07-08 | 闽都创新实验室 | 5G forward wavelength division multiplexing module based on optical fiber array and assembling method thereof |
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