CN107069165A - A kind of completely isolated Multidirectional surface wave separator of bandwidth - Google Patents
A kind of completely isolated Multidirectional surface wave separator of bandwidth Download PDFInfo
- Publication number
- CN107069165A CN107069165A CN201710404230.8A CN201710404230A CN107069165A CN 107069165 A CN107069165 A CN 107069165A CN 201710404230 A CN201710404230 A CN 201710404230A CN 107069165 A CN107069165 A CN 107069165A
- Authority
- CN
- China
- Prior art keywords
- surface wave
- waveguide
- photonic crystal
- multidirectional
- metal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P3/00—Waveguides; Transmission lines of the waveguide type
- H01P3/20—Quasi-optical arrangements for guiding a wave, e.g. focusing by dielectric lenses
Landscapes
- Optical Integrated Circuits (AREA)
Abstract
The invention discloses a kind of completely isolated Multidirectional surface wave separator of bandwidth, it is made up of the waveguide for constructing multiple different directions by way of introducing defect on the surface wave photonic crystal that the metal pillar array structure of metal surface periodic arrangement is constituted, the metal column of the surface wave photonic crystal is equal with the distance between post, and the distance is less than 1/2nd of surface wave operation wavelength；Waveguide is to be constituted by way of metal column is reduced on surface wave photonic crystal and highly introduces defect, and the resonant frequency of fault location is within the forbidden band of circumferential surface ripple photonic crystal；One end of all waveguides is connected with excitaton source.The partial wave of the present invention is the coupled resonator optical waveguide based on tigh binding approximation principle, rather than the dispersion relation of traditional surface plasma waveguide, it is achieved thereby that surface wave in the range of different frequency is completely separated, the operating frequency range of multidirectional surface wave channel-splitting filter of the invention can change by adjusting the geometric parameter of metal structure come any.
Description
Technical field
The invention belongs to the multidirectional channel-splitting filter field of surface wave, and in particular to a kind of completely isolated multi-direction surface wave of bandwidth
Channel-splitting filter.
Background technology
Artificial surface plasma is that one kind is present in out-of-flatness metal in low-frequency band (microwave, Terahertz or far infrared)
Surface electromagnetic wave on surface, because the surface electromagnetic wave is confined in the range of sub-wavelength without limited by diffraction limit, because
And have important application in terms of IC-components miniaturization and data storage.How to effectively control the transmission of surface wave for reality
These existing important applications are most important.
The existing multidirectional channel-splitting filter of surface wave is based primarily upon traditional artificial surface plasma filled waveguide, has by construction
The waveguiding structure of different dispersion relations, so as to realize the partial wave of surface wave.By the surface groove for controlling metal grating structure
Depth, the dispersion of the thickness of the width of surface groove, the periodicity of surface groove and metallic plate to change metallic surface structures is bent
Line, so as to reach the purpose of surface wave separater.
The existing multidirectional channel-splitting filter technology of surface wave, which is based primarily upon Traditional Man surface plasma dispersion curve, to be passed through
Change the geometric parameter of metal structure to realize the function of partial wave.But traditional surface plasma dispersion relation is from light
Set out, although so the surface channel-splitting filter based on conventional surface Plasma Dispersion relation can be isolated in high frequency band
Open, but still coincided together in low-frequency band dispersion relation, it is impossible to be thoroughly kept completely separate the surface wave of different frequency.This
Sample has resulted in the failure of low-frequency band partial wave function.
The content of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of completely isolated multi-direction surface of bandwidth
Wave separater device.
The completely isolated Multidirectional surface wave separator of bandwidth of the invention, is included in the gold of metal surface periodic arrangement
Belong to and be provided with multiple waveguides, the surface on the surface wave photonic crystal that pillar array structure is constituted, the surface wave photonic crystal
The metal column of ripple photonic crystal is equal with the distance between post, and the distance is less than 1/2nd of surface wave operation wavelength；Institute
The waveguide stated is to be constituted by way of introducing defect on surface wave photonic crystal, and the resonant frequency of the fault location is in week
Within the forbidden band for enclosing surface wave photonic crystal；One end of described all waveguides is connected with excitaton source, the other end be used for it is respective
Receiver is connected.
It is preferred that, the mode of described introducing defect is the pillar height of reduction metal column, is lowered at the metal column of pillar height
Resonant frequency is within the forbidden band of the surface wave photonic crystal of higher metal post composition around.
It is preferred that, the height that the metal column of pillar height is lowered in same waveguide is identical.
It is preferred that, the height that the metal column of pillar height is lowered in different waveguide is different, i.e., the color of the multiple waveguide
Non-dramatic song line is completely isolated.
Optionally, described waveguide is straight wave guide, i.e., the described metal column for being lowered pillar height is continuous or every an arrangement
It is in alignment.
Optionally, described waveguide is the waveguide for including one or more 90 ° of knuckles without bending radius, i.e., described to be dropped
The metal column of low pillar height is continuous or in alignment or include one or more 90 ° of knuckles without bending radius every an arrangement
Broken line.
Surface wave excitation source (as placed a monopole antenna), the surface wave so inspired from center excitaton source are set
It will be propagated in different directions without overlapping in frequency in different frequency ranges.And find to be based on the surface glistening light of waves
The dispersion curve for the waveguide that sub- crystal structure comes out and entirely different, the traditional surface of traditional surface plasma dispersion curve
Plasma curve is that asymptotic frequency is reached on the first Brillouin border from light, and based on the waveguide of photonic crystal construction
Dispersion curve and coupled resonator optical waveguide (the coupled-resonator optical using tigh binding approximation principle
Waveguide) equally.Because the transmission belt of coupled resonance cavity waveguide is not from light and possesses narrower transmission belt
Width, can be bent the dispersions of the different branch-waveguides of channel-splitting filter so the structural parameters by designing different coupled resonance cavity waveguides
Line is completely isolated to be come, and the surface wave of such different frequency will be propagated without any heavy along the different branch of channel-splitting filter
It is folded, so as to reach the purpose of thorough partial wave.
The present invention proposes a kind of completely isolated multidirectional channel-splitting filter of new bandwidth and multidirectional partial wave mechanism, and this mechanism is
The dispersion relation of coupled resonator optical waveguide based on tigh binding approximation principle, rather than traditional surface plasma waveguide
Dispersion relation.
The present invention realizes being completely separated for the surface wave of different frequency, and traditional artificial surface plasma filled waveguide is
The function is not realized.The completely isolated multidirectional channel-splitting filter of bandwidth plays an important role in Terahertz and microwave integrated circuit.
The operating frequency range of the multidirectional surface wave channel-splitting filter of the present invention can be by adjusting the geometric parameter of metal structure
Carry out any change.
Brief description of the drawings
The multidirectional surface wave channel-splitting filter schematic diagram of Fig. 1 (a) bandwidth isolation completely.Fig. 1 (b) four branch's couplings of multidirectional channel-splitting filter
Close the dispersion curve of resonance cavity waveguide.
The near field transmission spectrum of completely isolated four branches of multidirectional channel-splitting filter of Fig. 2 (a) bandwidth.(b-e) what experiment was measured is more
Distribution map of the electric field under channel-splitting filter different frequency, wherein Fig. 2 (b) are 12.85GHz, and Fig. 2 (c) is 13.35GHz, Fig. 2 (d)
For 13.88GHz, Fig. 2 (e) is 14.48GHz.
Embodiment
With reference to Figure of description, the invention will be further described.
The completely isolated multidirectional surface wave channel-splitting filter of bandwidth that the present invention is constructed based on surface wave photonic crystal, such as Fig. 1 (a)
It is shown.Surface wave photonic crystal of the present invention is the metal pillar array structure in metal surface periodic arrangement, metal
The height H=5mm of post, cycle d=5mm, radius r=1.25mm.The surface wave photonic crystal is in 12.6GHz to 27GHz frequencies
In the range of be surface wave forbidden band, i.e., do not support the propagation of any surface wave in the frequency range.By reducing metal pillar
The method of height introduces the passband of surface wave propagation in surrounding photonic crystal forbidden band, such surface wave will along reduction gold
Belong to post to propagate.
A metal column at the surface wave photonic crystal center is removed first and places a monopole antenna as surface
The excitaton source of ripple, such as Fig. 1 (a) so.Next is on four different directions every one (as shown in Fig. 1 (a) black broad arrows)
Metal column reduces the height of metal pillar, is reduced to h=4.7mm, 4.4mm, 4.1mm, 3.8mm, Qi Tajin from H=5mm respectively
Belong to pillar height degree and keep constant.Eigenmode-analysis is carried out to the surface wave guide on four direction, their dispersion is calculated bent
Shown in line, such as Fig. 1 (b).It can be seen that the dispersion curve of coupled resonance cavity waveguide is isolated entirely from four direction,
The surface wave so inspired from center excitaton source will be propagated without frequency in different directions in different frequency ranges
It is overlapping in rate.And find the dispersion curve of waveguide that is constructed based on surface wave photonic crystal and traditional surface etc. from
Daughter waveguide dispersion curve is entirely different, traditional surface plasma waveguide dispersion curve be from light in the first cloth
Deep border reaches asymptotic frequency, and the dispersion curve of the waveguide constructed based on surface wave photonic crystal and utilization tigh binding approximation are former
The dispersion curve of the coupled resonator optical waveguide (coupled-resonator optical waveguide) of reason is the same.By
It is not from light in the transmission belt of coupled resonance cavity waveguide and possesses narrower transmission bandwidth, designs different so passing through
The structural parameters of coupled resonance cavity waveguide, can be completely isolated the dispersion curve of the different branch's coupled resonance cavity waveguide of channel-splitting filter
Come, the surface wave of such different frequency will be propagated without any overlapping along the different branch of channel-splitting filter, so as to reach
The purpose of thorough partial wave.
For the design of verification experimental verification, it machined the channel-splitting filter in Fig. 1 (a) and test partial wave with network vector analyzer
The near field transmission spectrum of the different branches of device four, shown in such as Fig. 2 (a).It can be seen that the transmission of multidirectional four difference branches of channel-splitting filter
Come with completely isolated, the surface wave of such different frequency will be separated thoroughly.In order to contrast, equally test and do not introduce
The transmission spectrum of the full surface ripple photonic crystal of defect, as shown in gray line in Fig. 2 (a), it can be seen that the surface wave photonic crystal
Forbidden band since 12.6GHz, and the transmission belt of four branches of multidirectional channel-splitting filter is all located at circumferential surface ripple photonic crystal
In forbidden band.For the performance of the clearer multidirectional channel-splitting filter of performance, electricity of the microwave near-field imager to the multidirectional channel-splitting filter is utilized
It is imaged, shown in such as figure two (b-e), the difference of the surface electromagnetic wave of different frequency according to the requirement of design along channel-splitting filter is divided
Branch is propagated, and each other without any overlapping.12.85GHz surface wave is only propagated to the right, and 13.35GHz surface wave is only
Propagate downwards, 13.88GHz surface wave is only propagated to the left, and 14.48GHz surface wave is only upwardly propagated, so as to be kept completely separate
The electromagnetic wave of different frequency.
Claims (7)
1. the completely isolated Multidirectional surface wave separator of a kind of bandwidth, it is characterised in that be included on metal surface and periodically arrange
Multiple waveguides, institute are provided with the surface wave photonic crystal that the metal pillar array structure of row is constituted, the surface wave photonic crystal
The metal column for stating surface wave photonic crystal is equal with the distance between post, and the distance be less than surface wave operation wavelength two/
One；Described waveguide is to be constituted by way of metal column is reduced on surface wave photonic crystal and highly introduces defect, described to lack
The resonant frequency for falling into place is within the forbidden band of circumferential surface ripple photonic crystal；One end of described all waveguides and excitaton source phase
Even, the other end is used to be connected with respective receiver.
2. Multidirectional surface wave separator according to claim 1, it is characterised in that the mode of described introducing defect is
The pillar height of metal column is reduced, the surface wave that the resonant frequency at the metal column of pillar height is in higher metal post composition around is lowered
Within the forbidden band of photonic crystal.
3. Multidirectional surface wave separator according to claim 2, it is characterised in that be lowered pillar height in same waveguide
Metal column height it is identical.
4. Multidirectional surface wave separator according to claim 3, it is characterised in that pillar height is lowered in different waveguide
The height of metal column is different, i.e., the dispersion curve of the multiple waveguide is completely isolated.
5. the Multidirectional surface wave separator according to claim 1 or 4, it is characterised in that described waveguide is straight wave guide,
The i.e. described metal column for being lowered pillar height is in alignment every one or continuous arrangement.
6. the Multidirectional surface wave separator according to claim 1 or 4, it is characterised in that described waveguide is to include one
Or the waveguide of multiple 90 ° of knuckles without bending radius, i.e., the described metal column continuous arrangement for being lowered pillar height it is in alignment or
Include the broken line of one or more 90 ° of knuckles without bending radius.
7. a kind of method for dividing waves of the Multidirectional surface wave separator completely isolated based on bandwidth described in claim 1, its feature
It is to set surface wave excitation source, excitaton source is connected with each waveguide end, because the dispersion curve of different waveguide is completely isolated；From
The surface wave that center excitaton source is inspired is propagated without in frequency in different frequency ranges along different wave guide directions
It is overlapping；So as to reach the purpose of thorough partial wave.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710404230.8A CN107069165A (en) | 2017-06-01 | 2017-06-01 | A kind of completely isolated Multidirectional surface wave separator of bandwidth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710404230.8A CN107069165A (en) | 2017-06-01 | 2017-06-01 | A kind of completely isolated Multidirectional surface wave separator of bandwidth |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107069165A true CN107069165A (en) | 2017-08-18 |
Family
ID=59617399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710404230.8A Pending CN107069165A (en) | 2017-06-01 | 2017-06-01 | A kind of completely isolated Multidirectional surface wave separator of bandwidth |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107069165A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111025467A (en) * | 2019-12-27 | 2020-04-17 | 华中科技大学 | Tunable optical differentiator based on silicon-based metamaterial |
| CN112540427A (en) * | 2020-12-04 | 2021-03-23 | 天津大学 | Terahertz topological transmission waveguide based on optical quantum spin Hall effect |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101246237A (en) * | 2008-02-29 | 2008-08-20 | 深圳大学 | Multi-cavity cascade-connection photon crystal multicenter wave filter |
| CN206820099U (en) * | 2017-06-01 | 2017-12-29 | 深圳凌波近场科技有限公司 | The completely isolated Multidirectional surface wave separator of bandwidth |
-
2017
- 2017-06-01 CN CN201710404230.8A patent/CN107069165A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101246237A (en) * | 2008-02-29 | 2008-08-20 | 深圳大学 | Multi-cavity cascade-connection photon crystal multicenter wave filter |
| CN206820099U (en) * | 2017-06-01 | 2017-12-29 | 深圳凌波近场科技有限公司 | The completely isolated Multidirectional surface wave separator of bandwidth |
Non-Patent Citations (2)
| Title |
|---|
| ZHEN GAO ET AL.: "Multi-directional plasmonic surface-wave splitters with full bandwidth isolation", 《APPLIED PHYSICS LETTERS》 * |
| ZHEN GAO ET AL.: "Valley surface‑wave photonic crystal and its bulk/edge transport", 《PHYSICAL REVIEW》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111025467A (en) * | 2019-12-27 | 2020-04-17 | 华中科技大学 | Tunable optical differentiator based on silicon-based metamaterial |
| CN111025467B (en) * | 2019-12-27 | 2020-11-17 | 华中科技大学 | Tunable optical differentiator based on silicon-based metamaterial |
| CN112540427A (en) * | 2020-12-04 | 2021-03-23 | 天津大学 | Terahertz topological transmission waveguide based on optical quantum spin Hall effect |
| CN112540427B (en) * | 2020-12-04 | 2022-07-12 | 天津大学 | Terahertz topological transmission waveguide based on optical quantum spin Hall effect |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Garcia-Vidal et al. | Spoof surface plasmon photonics | |
| Caloz | Perspectives on EM metamaterials | |
| CN106486729B (en) | Compact closed-loop resonator based on artificial surface plasmon | |
| Alam et al. | Labyrinth double split open loop resonator based bandpass filter design for S, C and X-band application | |
| Alam et al. | Left-handed metamaterial bandpass filter for GPS, Earth Exploration-Satellite and WiMAX frequency sensing applications | |
| Farokhipour et al. | A spoof surface plasmon polaritons (SSPPs) based dual-band-rejection filter with wide rejection bandwidth | |
| Pham et al. | Analysis and experiments on Fano interference using a 2D metamaterial cavity for field localized wireless power transfer | |
| Mishra et al. | A compact CPW‐fed wideband metamaterial antenna using Ω‐shaped interdigital capacitor for mobile applications | |
| Xu et al. | A dual-band microwave filter design for modern wireless communication systems | |
| US20140028415A1 (en) | Frequency-tunable band-pass filter for microwave | |
| Mouadili et al. | Photonic demultiplexer based on electromagnetically induced transparency resonances | |
| CN107069165A (en) | A kind of completely isolated Multidirectional surface wave separator of bandwidth | |
| CN206820099U (en) | The completely isolated Multidirectional surface wave separator of bandwidth | |
| Naqui et al. | Effects of inter-resonator coupling in split ring resonator loaded metamaterial transmission lines | |
| CN105401669A (en) | Device free of blocking to wireless signals based on impedance matching | |
| Sabah | Electric and magnetic excitations in anisotropic broadside-coupled triangular-split-ring resonators | |
| Huang et al. | Systematical analysis for the mixed couplings of two adjacent modified split ring resonators and the application to compact microstrip bandpass filters | |
| Krutiev et al. | Electrodynamic analysis and synthesis of the waveguide band-pass filter on resonant diaphragms with C-shaped aperture | |
| Jin et al. | A type of E-plane filter using folded split ring resonators (FSRRs) | |
| Bui et al. | Active switching control of field-localized waveguide using time-modulated non-reciprocal reconfigurable metasurface | |
| Alam et al. | Open loop resonator-based triple passband filter for 1.5 GHz, 2.45 GHz and 3.65 GHz applications | |
| Quevedo-Teruel et al. | Numerical and experimental studies of split ring resonators loaded on the sidewalls of rectangular waveguides | |
| Abdelrehim et al. | High performance patch antenna using circular split ring resonators and thin wires employing electromagnetic coupling improvement | |
| Alam et al. | Double-split labyrinth resonator with defective ground system for wide-band band-stop filter application | |
| Li et al. | Small attenuation negative group delay of spoof surface plasmon polaritons |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |