CN104852119B - Compact wideband slow wave system based on tangent bend excess metal optical grating construction - Google Patents
Compact wideband slow wave system based on tangent bend excess metal optical grating construction Download PDFInfo
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- CN104852119B CN104852119B CN201510159916.6A CN201510159916A CN104852119B CN 104852119 B CN104852119 B CN 104852119B CN 201510159916 A CN201510159916 A CN 201510159916A CN 104852119 B CN104852119 B CN 104852119B
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- tangent bend
- excess metal
- slow wave
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Abstract
The present invention provides a kind of compact wideband slow wave system based on tangent bend excess metal optical grating construction, the compact wideband slow wave system based on tangent bend excess metal optical grating construction includes dielectric-slab and the tangent bend excess metal optical grating construction on dielectric-slab, the tangent bend excess metal optical grating construction is made of two metal grating structures of inner side etching crooked groove, tangent bend excess metal optical grating construction is composed of one section or two sections or the short rectangular recess of multistage, the total length of crooked groove for these short rectangular recess length and.The present invention reduces overall dimensions or volume.
Description
Technical field
The present invention relates to a kind of compact wideband slow wave system based on tangent bend excess metal optical grating construction, the compact molded breadth
Band slow wave system can realize the functions such as communication, data storage or signal delay in microwave section, millimere-wave band or terahertz wave band.
Background technology
Surface phasmon is the electromagnetic wave for being bound by metal and dielectric surface, from the limitation of optical diffraction limit, because
And available for construction compact element, there is important application in surface or interface tech and data storage etc., shape
Into surface plasma.Periodic arrangement microstructure unit（Its characteristic size is much smaller than wavelength）The manual electromagnetic structure of formation can
Support similar Surface wave mode to propagate, can more easily manipulate electromagnetic wave propagation, so as to fulfill various new function element.
The broadband slow wave system based on graded metal groove structure having pointed out at present also has the following disadvantages：Graded metal groove structure
The lateral dimension of broadband slow wave system can become larger with the increase of groove length, be unfavorable for the miniaturization of device and integrated, this
Invention proposes a kind of compact wideband slow wave system based on tangent bend excess metal optical grating construction, the lateral dimension of the system with often
Broadband slow wave system is advised compared to reduction more than 40%.
The content of the invention
It is an object of the invention in view of the deficienciess of the prior art, proposing that one kind is based on tangent bend excess metal grating
The compact wideband slow wave system of structure, it reduces overall dimensions or volume.
Conceive the present invention according to foregoing invention to adopt the following technical scheme that：One kind is based on tangent bend excess metal optical grating construction
Compact wideband slow wave system, it is characterised in that the compact wideband slow wave system based on tangent bend excess metal optical grating construction
System includes dielectric-slab and the tangent bend excess metal optical grating construction on dielectric-slab, the tangent bend excess metal optical grating construction
It is made of two metal grating structures of inner side etching crooked groove, tangent bend excess metal optical grating construction is by one section or two sections
Or the short rectangular recess of multistage is composed, the total length of crooked groove for these short rectangular recess length and.
Further, the compact wideband slow wave system based on tangent bend excess metal optical grating construction, which uses, is located at medium
The microstrip line vertical with the front line of rabbet joint of back comes on exciting media plate in tangent bend excess metal optical grating construction as excitation
Imitative surface phasmon.
Further, the microstrip line is exactly a short metal patch positioned at medium back, which is exactly double curved
One gap structure of bent excess metal optical grating construction front end.
The present invention compared with prior art, have following obvious prominent substantive distinguishing features and notable technology into
Step：Present invention firstly provides a kind of compact wideband slow wave system based on tangent bend excess metal optical grating construction, crooked groove
Introducing can cause the waveguiding structure broadband slow wave system overall dimensions or volume and the broadband slow wave based on vertical groove
Comparing for system reduces more than 40%, and the constraint ability to electromagnetic wave is stronger, and propagation loss is lower.
Brief description of the drawings
Fig. 1 is the vertical view of the compact wideband slow wave system proposed by the present invention based on tangent bend excess metal optical grating construction
Figure.
Fig. 2 is the side view of the compact wideband slow wave system proposed by the present invention based on tangent bend excess metal optical grating construction
Figure.
Fig. 3 is that the waveguiding structure proposed by the present invention based on tangent bend metal grating structure and routine are golden based on straight groove
The propagation distance for belonging to optical grating construction compares figure.
Fig. 4 is the electromagnetic wave of different frequency in the compact width proposed by the present invention based on tangent bend excess metal optical grating construction
Electric field magnitude distribution with slow wave system.
Embodiment
To make the technical means, the creative features, the aims and the efficiencies achieved by the present invention be readily apparent from understanding, with reference to
Attached drawing and preferred embodiment, the present invention is further explained.
Embodiment one：
Referring to Fig. 1 and Fig. 2, being somebody's turn to do the compact wideband slow wave system based on tangent bend excess metal optical grating construction includes dielectric-slab
16 and the tangent bend excess metal optical grating construction 1 on dielectric-slab 16, the tangent bend excess metal optical grating construction 1 is by inner side
Two metal grating structures composition of crooked groove is etched, metal grating structure thickness 14 is very small, heretofore described double curved
Bent excess metal optical grating construction is composed of one section or two sections or the short rectangular recess of multistage, and the total length of crooked groove is this
The length of a little short rectangular recess and, compared with common metal optical grating construction, in the case where groove total length is identical, this grating
Structure propagation loss in the case where keeping identical electromagnetic wave constraint ability is lower and smaller, has significant advantage.
Based on the tangent bend excess metal optical grating construction by making crooked groove total length gradual change, and retaining groove width, two gold
Belonging to the distance between groove waits geometric parameter to fix, it is possible to achieve compact broadband slow wave system, the function of the system be compared with
The electromagnetic beam of different frequency is set to be tied in the crooked groove of diverse location in wide operating frequency range.Its adjustable parameter includes
Groove first segment rectangular recess length 11, second segment rectangular recess length 12, the 3rd sections of rectangular recess length, 13, n-th sections of rectangles
Filled media 6, filling are situated between the distance between groove length, two metal grooves 9, metal groove width 10, bimetallic grating
Matter width 8 etc.., can be wider by flexibly controlling first segment to make crooked groove total length gradual change to n-th section of groove length
The electromagnetic beam of different frequency is set to be tied to the crooked groove of diverse location in operating frequency range, the transverse width 7 of the system compares
The reduction more than 40% of broadband slow wave system based on common metal groove.
Embodiment two：
The present embodiment and embodiment one are essentially identical, and special feature is as follows：The tangent bend in metal grating structure is recessed
The shape of groove metal grating structure 1 is：What one horizontal long straight groove was gradually changed with a plurality of vertical total length being equally spaced
The short straight groove in part longitudinal direction and part crooked groove intersect vertically composition.Using positioned at medium back and the front line of rabbet joint 5
Vertical microstrip line 4 comes imitative surface on exciting media plate 16 in tangent bend excess metal optical grating construction 1 etc. as excitation from sharp
Member.Wherein microstrip line is to couple more electromagnetic waves with first circular configuration 2, the second circular configuration 3 of line of rabbet joint one end
Onto tangent bend excess metal optical grating construction, which is exactly a short metal patch positioned at medium back, the line of rabbet joint
5 be exactly a gap structure of tangent bend excess metal optical grating construction front end.
Referring to Fig. 3 and Fig. 4, the compact wideband slow wave system based on tangent bend excess metal optical grating construction is somebody's turn to do, realizes broadband
The principle of slow wave is identical with described in pervious technology, the difference is that the metal grating in the present embodiment introduces tangent bend groove knot
Structure, thus can be such that the size of whole system and volume significantly reduces；In Fig. 1, media plate thickness are numeral mark 15, metal light
Grid thickness is numeral mark 14, metal groove width is numeral mark 10, and the distance between two metal grooves are numeral mark
9th, filled media is numeral mark 6 between bimetallic grating, and filled media width is numeral mark 8.Groove total depth is gradual change.
The metal thickness of the microstrip line 4 of medium back is identical with metal grating thickness, excites tangent bend groove golden as driving source
Belong to the imitative surface phasmon in optical grating construction 1.The introducing of crooked groove can be such that the transverse width 7 of whole system significantly reduces,
Compared with using the broadband slow wave system of vertical groove completely, its constraint ability to electromagnetic wave is stronger, and propagation distance is longer, and
And its transverse width 7 can reduce more than 40%.Therefore, broadband slow wave system structure of the invention is compacter.It can be seen in Fig. 3
Go out, with being continuously increased for groove total length, the electric field magnitude of different frequency electromagnetic wave can be gradually reduced, or even be kept to zero, be shown
The electromagnetic wave can be tied to the groove, not continue to propagate forward, and the rest position of different frequency electromagnetic wave is different, so that
Realize the function of broadband slow wave.
The metal grating structure of support matrix surface wave propagation is different according to working frequency range in the present embodiment, can use different processing
Technique is realized, such as PCB technology, Electric Discharge Wire-cutting Technology or photoetching process etc..
In the present embodiment, first by the dispersion curve of Electromagnetic Simulation tool analysis tangent bend metal grating structure, pass through
The gradual change of the surface groove length of limited thickness metal grating structure is controlled, the electromagnetic wave of different frequency is terminated in different positions
Put, so as to fulfill the function of broadband slow wave.The limited thickness metal grating structure of microwave section, millimere-wave band and terahertz wave band adds
Work is fairly simple.
The compact wideband slow wave system based on tangent bend excess metal optical grating construction of the invention includes dielectric-slab and double thereon
Crooked groove metal grating structure, the tangent bend excess metal optical grating construction are etched two metal light of crooked groove by inner side
Grid structure composition, metal grating structure thickness is very small, and heretofore described crooked groove metal grating structure is then by one section
Or two sections or the short rectangular recess of multistage are composed, the total length of crooked groove for these short rectangular recess length and, it is and normal
Rule metal grating structure is compared, and in the case where groove total length is identical, this optical grating construction is keeping identical electromagnetic beam
Propagation loss is lower and smaller in the case of tiing up ability, has significant advantage.Based on the tangent bend excess metal light
Grid structure, by making crooked groove total length gradual change, and the geometric parameter such as retaining groove width and cycle is fixed, it is possible to achieve tight
The broadband slow wave system to gather, the function of the system is that the electromagnetic beam for making different frequency in wider operating frequency range is tied to
In the crooked groove of diverse location, compared with the broadband slow wave system based on common metal optical grating construction, system of the present invention
Size it is more compact, the constraint ability to electromagnetic wave is stronger, and propagation loss is lower.
The basic principles, main features and the advantages of the invention have been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (3)
1. a kind of compact wideband slow wave system based on tangent bend excess metal optical grating construction, it is characterised in that described based on double
The compact wideband slow wave system of crooked groove metal grating structure includes dielectric-slab and the tangent bend groove gold on dielectric-slab
Belong to optical grating construction, the tangent bend excess metal optical grating construction is by two metal grating structures of the etched recesses be curved to the inside
Composition, tangent bend excess metal optical grating construction unit is composed of one section or two sections or the short rectangular recess of multistage, and unit
Between press equidistant arrangement, the total length of crooked groove for these short rectangular recess length and, make crooked groove total length gradual change.
2. the compact wideband slow wave system according to claim 1 based on tangent bend excess metal optical grating construction, its feature
Be, the compact wideband slow wave system based on tangent bend excess metal optical grating construction use positioned at medium back with just
The vertical microstrip line of the face line of rabbet joint come as excitation imitative surface on exciting media plate in tangent bend excess metal optical grating construction etc. from
Excimer.
3. the compact wideband slow wave system according to claim 2 based on tangent bend excess metal optical grating construction, its feature
It is, the microstrip line is exactly a short metal patch positioned at medium back, which is exactly tangent bend excess metal light
One gap structure of gate structure front end.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510159916.6A CN104852119B (en) | 2015-04-07 | 2015-04-07 | Compact wideband slow wave system based on tangent bend excess metal optical grating construction |
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| CN201510159916.6A CN104852119B (en) | 2015-04-07 | 2015-04-07 | Compact wideband slow wave system based on tangent bend excess metal optical grating construction |
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| CN104852119A CN104852119A (en) | 2015-08-19 |
| CN104852119B true CN104852119B (en) | 2018-04-27 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105720379A (en) * | 2016-02-21 | 2016-06-29 | 上海大学 | Surface plasmon coupler based electromagnetic energy collecting apparatus |
| CN111180844B (en) * | 2020-01-06 | 2021-07-09 | 东南大学 | Excitation and transmission device of artificial surface plasmon high-order mode |
| CN113381153B (en) * | 2021-06-23 | 2022-04-05 | 天津大学 | Slow-wave slot line transmission line |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104269595A (en) * | 2014-09-24 | 2015-01-07 | 上海大学 | Multi-channel wave splitter based on broadband slow-wave system |
| CN104362419A (en) * | 2014-11-28 | 2015-02-18 | 桂林电子科技大学 | Ultra-wideband (UWB) manual surface plasmonpolariton bend waveguide |
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| US8837036B2 (en) * | 2010-07-23 | 2014-09-16 | Pinaki Mazumder | Dynamic terahertz switch using periodic corrugated structures |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104269595A (en) * | 2014-09-24 | 2015-01-07 | 上海大学 | Multi-channel wave splitter based on broadband slow-wave system |
| CN104362419A (en) * | 2014-11-28 | 2015-02-18 | 桂林电子科技大学 | Ultra-wideband (UWB) manual surface plasmonpolariton bend waveguide |
Non-Patent Citations (2)
| Title |
|---|
| A 4-way wavelength demultiplexer based on the plasmonic broadband slow wave system;yong jin Zhou等;《Optics Express》;20140908;第22卷(第18期);全文 * |
| An ultra-wideband surface plasmonic filter in microwave frequency;Xi Gao等;《APPLIED PHYSICS LETTERS》;20140513;全文 * |
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