CN102540304A - Two-dimensional periodic hole-type Talbot medium phase grating - Google Patents
Two-dimensional periodic hole-type Talbot medium phase grating Download PDFInfo
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- CN102540304A CN102540304A CN2012100596294A CN201210059629A CN102540304A CN 102540304 A CN102540304 A CN 102540304A CN 2012100596294 A CN2012100596294 A CN 2012100596294A CN 201210059629 A CN201210059629 A CN 201210059629A CN 102540304 A CN102540304 A CN 102540304A
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Abstract
The invention provides a two-dimensional periodic hole-type Talbot medium phase grating; and a punching method is adopted to replace a traditional method of arranging a groove on a substrate to form the grating. The two-dimensional periodic hole-type Talbot medium phase grating can be applied to the power allocation/synthesis of millimeter waves and terahertz, the structure is simple, the parameter sensitivity is low, and the grating can be applied to the power allocation/synthesis of M*N circuits. In addition, the two-dimensional periodic hole-type Talbot medium phase grating can work in an open air environment and can work inside a closed cavity body.
Description
Technical field
The present invention relates to the cycle cellular type Talbot dielectric grating of a kind of microwave and millimeter wave and Terahertz frequency range, can be used for holographic quasi-optical power division/combiner circuit.
Background technology
Along with the used low-frequency range frequency band of traditional commercial communication is crowded gradually, people with the laying for direction of following electromagnetic communication millimeter wave and even Terahertz frequency range less relatively because these frequency ranges are utilized at present, and broadband, high rate communication are provided.The high-power signal source is one of technical bottleneck of microwave and millimeter wave and Terahertz Communication System Design always.And the means that solve one of this technical bottleneck adopt power synthetic exactly.Traditional power synthetic technique is based on planar circuit or waveguiding structure mostly.Chip-shaped power synthetic technique is because heat dissipation problem can't be realized the synthetic of too many tube core number, when the circuit type power synthesis circuit increases at the synthesis unit device; The cavity that thereupon increases can produce many new field modes; Therefore efficient is not high, and in microwave and millimeter wave and Terahertz frequency range, has very big loss; Quasi-optical power is synthetic to be to involve one of main means of Terahertz frequency range at millimeter; But its requires the distance between the device very little at high band, therefore can cause the heat radiation difficulty, and this power for multichannel is synthetic to have restriction.
Synthesize the problem that can't satisfy miniaturization and heat radiation at high band in order to solve quasi-optical power, people have proposed the synthetic method of holographic quasi-optical power, promptly adopt binary optical elements Talbot grating.Yet the grating that traditional mode of passing through the medium substrate fluting obtains can receive the processing technology restriction at high band, is difficult to obtain the less raster size of error, and its practicality is reduced.
Summary of the invention
The dielectric grating that the purpose of this invention is to provide a kind of microwave and millimeter wave and Terahertz frequency range; When it is used for power synthesis circuit; Its theoretical combined coefficient is near 100%; And size of devices parameter sensitivity degree is low when high band, and simple in structure being easy to processed, and is used for can not receiving when multichannel power synthesizes the characteristics such as heat radiation restriction of device and chip.
In order to realize above-mentioned order ground, the present invention proposes a kind of two-dimension periodic cellular type Talbot medium phase grating.Its concrete technical scheme is following:
Two-dimension periodic cellular type Talbot medium phase grating has periodically by one, and the medium substrate of aperture constitutes.The blind hole of the equidistant periodic arrangement certain depth of the one side of medium substrate, these blind holes along two dimension according to M capable * form of N row arranges.Be with the difference of traditional two-dimensional diffraction grating: the two-sided mode of opening horizontal and vertical groove respectively that the traditional two-dimensional diffraction grating is employed in medium substrate realizes; The mode that the two-dimension periodic cellular type Talbot medium phase grating that the present invention proposes then adopts single face equidistantly periodically to beat blind hole realizes, is easy to processing so more.And the radius and the distance between the circular hole of these circular holes can be designed to the operation wavelength much larger than grating; Make this two-dimension periodic cellular type Talbot medium phase grating can be operated in high band (like millimeter wave or THz frequency range etc.) like this and can not receive the restriction of processing technology; And be applied to can not cause the heat radiation difficulty when big quantity active device power is synthetic, this provides assurance for the practical application of this optical grating construction on millimeter submillimeter wave or even Terahertz frequency range.The thickness of dielectric substrate is a waveguide wavelength of frequency of operation, and in the grating degree of depth in each hole be this waveguide wavelength 1/3rd.Dielectric grating both can be used in open environment, also can be applied in the shielding cavity.When selecting the latter for use, cavity only is surrounded on four sides of dielectric grating, and bigger slightly than dielectric grating, and the longitudinal length of cavity then equals the plane of incidence of dielectric grating to the distance between the imaging surface at the back side.
Two-dimensional circle cellular type cycle T albot medium phase grating principle of work proposed by the invention is following:
Its cardinal principle of dielectric grating proposed by the invention is based on the Talbot effect of optics, promptly when plane wave incides Periodic Object (like grating), at the picture of its hemorrhage these Periodic Object of some position meeting at the back.And as long as the spacing that guarantees grating much larger than operation wavelength, because the electromagnetic wave that periodic optical grating causes is interfered, can the light spot will occur in the fractional multiple distance of Talbot length.Theoretical and scalar diffraction theory or Vector Diffraction Theory design dielectric grating according to binary optical.Two-dimension periodic cellular type Talbot medium phase grating can be realized the periodicity aperture of two dimension on grating; Avoided the complicated technology of traditional open flume type grating; But its periodic structure has the identical diffraction of common grating equally; When simultaneously shining two-dimensional circle cellular type cycle T albot medium phase grating along that does not have a punching with plane wave, can form in another side (beating that one side of blind hole) a distance M capable * spot array that N is listed as.
The present invention goes for the power division of multichannel/synthetic.For example for the two-dimension periodic cellular type Talbot medium phase grating of a M * N; When not having that vertical irradiation two-dimensional circle cellular type cycle T albot medium phase grating of punching with a branch of plane wave edge; Can form in another side (beat blind hole that one side) a distance M capable * spot array that N is listed as; Thereby realize the power division on M * N road, and merit branch way M * N can adjust through the distance of design or change grating.
Based on the Talbot image-forming principle; The distribution that realizes signal through the mode of on medium substrate, beating the two-dimensional array aperture is with synthetic; Make the present invention have simple in structure, be easy to processing, low, the big quantity merit of loss branch way, good heat dissipation effect, be easy to advantages such as integrated with the active power device, that frequency of operation is high, and the work zone is wide.The present invention can be used for microwave and millimeter wave and the quasi-optical power of Terahertz holography synthesizes amplification system, array antenna etc., in millimeter wave Terahertz systems such as communication, radar, has broad application prospects.
Description of drawings
Fig. 1 is the two-dimension periodic cellular type Talbot medium phase place grid three-dimensional structure synoptic diagram that has 2 * 2 hole arrays among the present invention under the open boundary condition;
Fig. 2 is the outgoing field distribution synoptic diagram of Fig. 1;
Fig. 3 is the three-dimensional structure synoptic diagram that the two-dimension periodic cellular type Talbot medium phase place grid that have 2 * 2 hole arrays among the present invention place cavity;
Fig. 4 is the outgoing field distribution synoptic diagram of Fig. 3;
The corresponding name of label is called in the accompanying drawing:
(1) medium substrate, (2) aperture, (3) spot array sightingpiston.
Embodiment
Advantage of the present invention is described below by way of example.
This example is for having the two-dimension periodic cellular type Talbot medium phase grating of 2 * 2 hole arrays under the open architecture, the frequency of operation of grating is 450GHz.
As shown in Figure 1.Two-dimension periodic cellular type Talbot medium phase place grid under the open boundary condition that the present invention proposes have periodically by one, and the medium substrate of circular hole constitutes.For the grating of 2 * 2 hole arrays in this example, be on the one side of medium substrate, to beat circular hole according to the mode of 2 row * 2 row, the size and the degree of depth in each hole are identical, and the spacing in every row or every row hole equates.This grating places open architecture to work.
When being used for power divider; Not having the one side of punching is the plane of incidence of signal; Incoming signal on this face must be a plane wave, at this moment, and on certain plane, medium substrate back apart from the plane of incidence one segment length; The little hole number and all on all four light spot of arranging on meeting appearance and the grating, Fig. 2 is the outgoing wave distribution schematic diagram of the grating of 2 * 2 hole arrays.Four light spots among Fig. 2 are represented to be gathered into four hot spots after the incoming signal energy is through phase grating, are divided into four the tunnel, and on this display surface arranging according to 2 * 2 arrays.
This example is for having the two-dimension periodic cellular type Talbot medium phase grating of 2 * 2 hole arrays in the cavity, the frequency of operation of grating is 450GHz.
As shown in Figure 3.This grating is identical with the grating in the example 1, and this moment, grating placed the metallic shield cavity.The encirclement of cavity four sides of grating, and two faces on the incident wave direction remain open.The length of incident wave direction then equals the distance of the signal plane of incidence to diffraction surfaces.
Fig. 4 is the outgoing wave synoptic diagram of 2 * 2 grating array of formation this moment, and can find out has four light spots equally on diffraction surfaces, and its arrangement is identical with the aperture arrangement on the grating, also is 2 * 2 form.
Can find out that through above-mentioned two embodiments the present invention can be applied to millimeter and involve the power division of Terahertz/synthetic, and simple in structure; The parameter sensitivity degree is low; Can be applied to the power division on M * N road/synthetic, and not only can work in the open air ambient, also can be operated in closed cavity inside; When grating places enclosed cavity inner, can improve the antijamming capability of circuit.
Claims (6)
1. two-dimension periodic cellular type Talbot medium phase grating comprises medium substrate (1) and the aperture (2) of the certain depth of periodically arranging, and on the sightingpiston (3) of its back certain position, can observe the diffraction pattern array.
2. according to claim 1, medium substrate (1) is chosen low-loss substrate as far as possible, and the thickness of substrate is a wavelength in the medium substrate under the centre frequency of selected working frequency range.
3. according to claim 1, the aperture on the grating (2) can be different shapes such as circle, ellipse, polygon.
4. according to claim 1, all apertures (2) size is identical on the substrate.Aperture along two dimension according to M capable * form of N row is arranged, and the spacing between the adjacent aperture of every row or every row equates.
5. according to claim 1, the realization of dielectric grating can have dual mode: a kind of is the blind hole of on a medium substrate, beating certain depth; Another kind of mode is to adopt two substrate stacks, and wherein a substrate is got through the hole, and another piece does not then punch, and then two range upon range of fitting together of substrate is got final product.
6. according to claim 1,3,4 is said, and aperture (2) pitch of holes of colleague or same column should be much larger than the operation wavelength in the medium substrate.
7 is according to claim 1, and the aperture on the grating (2) number not necessarily equates with light spot number on the sightingpiston (3), can obtain the light spot greater or less than little number of perforations through the position of regulating sightingpiston (3).
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105680140A (en) * | 2016-01-12 | 2016-06-15 | 电子科技大学 | Nanometer wave/terahertz two-dimensional quasi-optical power divider/synthesizer |
| CN106125176A (en) * | 2016-07-11 | 2016-11-16 | 中国科学院上海技术物理研究所 | The one-dimensional three-dimensional phase grating of a kind of Terahertz |
| CN108444913A (en) * | 2018-01-30 | 2018-08-24 | 中国科学院上海技术物理研究所 | Based on unit born of the same parents' solid phase grating and mutually with reference to the THz spectrometers of technology |
| CN113841072A (en) * | 2019-03-27 | 2021-12-24 | 尤利塔股份公司 | Method and apparatus for printing periodic patterns with varying aspect ratios |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101730857A (en) * | 2007-07-13 | 2010-06-09 | 佳能株式会社 | Optical filter |
| US20110200168A1 (en) * | 2008-10-29 | 2011-08-18 | Canon Kabushiki Kaisha | Imaging apparatus and imaging method |
-
2012
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101730857A (en) * | 2007-07-13 | 2010-06-09 | 佳能株式会社 | Optical filter |
| US20110200168A1 (en) * | 2008-10-29 | 2011-08-18 | Canon Kabushiki Kaisha | Imaging apparatus and imaging method |
Non-Patent Citations (4)
| Title |
|---|
| YONG ZHANG: "《Nonlinear Talbot Effect》", 《PHYSICAL REVIEW LETTERS》 * |
| 周同军 等: "《山东师范大学学报（自然科学版）》", 《光栅尺寸对光栅泰伯效应的影像》 * |
| 方靖岳 等: "《光栅大小对琅奇光栅泰伯效应的影像分析》", 《红外与激光工程》 * |
| 答孝义 等: "《泰伯效应光学照明阵列》", 《武汉大学学报（自然科学版）》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105680140A (en) * | 2016-01-12 | 2016-06-15 | 电子科技大学 | Nanometer wave/terahertz two-dimensional quasi-optical power divider/synthesizer |
| CN106125176A (en) * | 2016-07-11 | 2016-11-16 | 中国科学院上海技术物理研究所 | The one-dimensional three-dimensional phase grating of a kind of Terahertz |
| CN108444913A (en) * | 2018-01-30 | 2018-08-24 | 中国科学院上海技术物理研究所 | Based on unit born of the same parents' solid phase grating and mutually with reference to the THz spectrometers of technology |
| CN113841072A (en) * | 2019-03-27 | 2021-12-24 | 尤利塔股份公司 | Method and apparatus for printing periodic patterns with varying aspect ratios |
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Application publication date: 20120704 |