CN102156328B - Y-shaped porous hollowed slab terahertz wave polarizing beam splitter - Google Patents
Y-shaped porous hollowed slab terahertz wave polarizing beam splitter Download PDFInfo
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- CN102156328B CN102156328B CN2011100896612A CN201110089661A CN102156328B CN 102156328 B CN102156328 B CN 102156328B CN 2011100896612 A CN2011100896612 A CN 2011100896612A CN 201110089661 A CN201110089661 A CN 201110089661A CN 102156328 B CN102156328 B CN 102156328B
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Abstract
The invention discloses a Y-shaped porous hollowed slab terahertz wave polarizing beam splitter. A porous hollowed coupling region consists of a second linear porous hollowed region and a third linear porous hollowed region; the third linear porous hollowed region is connected with a fourth linear porous hollowed region to form a linear porous hollowed region; a first linear porous hollowed region is formed by linearly arranging a plurality of large-hole hollows and a plurality of small-hole hollows at equal intervals; an S-shaped curve porous hollowed region is formed by arranging a plurality of small-hole hollows at equal intervals in S shape; the first linear porous hollowed region, the second linear porous hollowed region and the S-shaped curve porous hollowed region are sequentially connected with one another to form a curve porous hollowed region; and the Y-shaped porous hollowed region comprises a linear porous hollowed region and a curve porous hollowed region. The Y-shaped porous hollowed slab terahertz wave polarizing beam splitter has the advantages of simple structure, high beam splitting rate, small dimension, low cost, convenience in preparation and the like, and can meet the requirements on the application in the fields such as terahertz wave imaging, medical diagnosis, terahertz wave communication, and the like.
Description
Technical field
The present invention relates to beam splitter, relate in particular to the dull and stereotyped terahertz polarization beam splitter of the poroid hollow out of a kind of Y shape.
Background technology
Terahertz (Terahertz; Abbreviation THz) ripple is meant the electromagnetic wave of frequency in 0.1THz～10THz scope; It is in the field of electronics to the photonics transition; The integrated advantage of microwave communication with optical communication: at first THz wave is communicated by letter and can be obtained the bandwidth more much bigger than microwave communication, can effectively solve increasingly serious band resource problem of shortage.THz wave has good penetrability in addition, and it can penetrate materials such as flue dust, wall, carbon plate, cloth and pottery with very little decay, solved the limitation of optical communication in rugged surroundings such as flue dust.The transport property of THz wave has determined THz wave can be applied to radio communication.The Terahertz radar resolution is high in addition, can become following High Accuracy Radar developing direction.Growing THz wave technology all has great scientific value and wide application prospect at astronomical, biomedicine, safety and aspects such as environmental monitoring, imaging, broadband wireless communications and radar; Wherein the THz wave communication technology has the characteristic of millimetre-wave attenuator and optical communication, can be applied to aspects such as indoor local area network communication.In the world about research institution's emerge in multitude of THz wave, and obtained a lot of achievements in research, Terahertz Technology will be the focus of broad research in the following a very long time world wide.
The THz wave communication system be unable to do without the performance guarantee of various THz wave function elements.Though though domestic and international research expansion gradually for the THz wave function element; Emphasis and difficult point during but the THz wave function element is used as the THz wave science and technology; Compare the fast development of THz wave generation and pick-up unit and THz wave transmission waveguide, still need drop into a large amount of man power and materials and carry out deep exploration and research.The research that terahertz polarization beam splitter is studied for promotion THz wave function element has indispensable significance.Terahertz polarization beam splitter is a kind of very important THz wave device, is used for controlling the THz wave of THz wave system.Lot of domestic and international scientific research institution all is devoted to the research of this respect and has obtained certain progress at present, but relevant report is seldom arranged.Existing terahertz polarization beam splitter often complex structure, volume is big and cost an arm and a leg; Miniaturization, the THz wave device is the key of THz wave technical application cheaply; Therefore be necessary to design a kind of simple in structure, the high terahertz polarization beam splitter of beam splitting efficient is to satisfy following THz wave technical application needs.
Summary of the invention
The present invention is lower in order to overcome prior art polarization beam splitting transmissivity, complex structure, and actual fabrication difficulty, the deficiency that cost is high provides a kind of terahertz polarization beam splitter of high beam splitting rate.
In order to achieve the above object, technical scheme of the present invention is following:
The dull and stereotyped terahertz polarization beam splitter of the poroid hollow out of Y shape comprises signal input part; First signal output part; The secondary signal output terminal; The flat-plate polarizing device; The coarse pored hollow out; The small pore-like hollow out; Poroid hollow out coupling regime; The poroid hollow out of first linear zone; The poroid hollow out of second linear zone; The poroid hollow out of the 3rd linear zone; The poroid hollow out of sigmoid curve zone; The poroid hollow out of the 4th linear zone; The poroid hollow out of linear zone; The poroid hollow out of shaped form zone; The poroid hollow out of Y shape zone; Poroid hollow out coupling regime is made up of second linear poroid hollow out zone and the poroid hollow out of the 3rd linear zone; The poroid hollow out of second linear zone is arranged by a plurality of coarse pored hollow outs and the equidistant linear at interval of a plurality of small pore-like hollow out and is constituted; The 3rd linear poroid hollow out zone and the poroid hollow out of the 4th linear zone are arranged by the equidistant linear of a plurality of coarse pored hollow outs and are constituted, and the 3rd linear poroid hollow out zone and the poroid hollow out of the 4th linear zone connect and compose the poroid hollow out of linear zone; The poroid hollow out of first linear zone is arranged by a plurality of coarse pored hollow outs and the equidistant linear at interval of a plurality of small pore-like hollow out and is constituted; The poroid hollow out of sigmoid curve zone is arranged by the equidistant S shape of a plurality of small pore-like hollow outs and is constituted, and the poroid hollow out of first linear zone, the poroid hollow out of second linear zone and the poroid hollow out of sigmoid curve zone link to each other in order and constitute the poroid hollow out of shaped form zone; The poroid hollow out of Y shape zone comprises linear poroid hollow out zone and the poroid hollow out of shaped form zone two parts.
In the described poroid hollow out coupling regime, the poroid hollow out centreline space that the poroid hollow out of second linear zone and the poroid hollow out of the 3rd linear are regional be 10 ~ 60 μ m apart from size.Describedly equidistantly be spaced the poroid hollow out of second linear that forms zone by a plurality of coarse pored hollow outs and a plurality of small pore-like hollow out, its spacing is 40 μ m.Described coarse pored hollow out radius is 3 ~ 18 μ m, and small pore-like hollow out radius is 2.4 ~ 14.4 μ m.Described poroid hollow out coupling regime length L is 60 ~ 400 μ m.The S curved angle θ in the poroid hollow out of described sigmoid curve zone is 60 ~ 90 degree.The material of described flat-plate polarizing device is a gallium arsenide.
The dull and stereotyped terahertz polarization beam splitter of the poroid hollow out of Y shape of the present invention has simple in structure, and the beam splitting rate is high, and size is little, and cost is low, is convenient to advantages such as making, satisfies the requirement of using in fields such as THz wave imaging, medical diagnosis, THz wave communications.
Description of drawings:
Fig. 1 is the three-dimensional structure synoptic diagram of the dull and stereotyped terahertz polarization beam splitter of the poroid hollow out of Y shape;
Fig. 2 is the two-dimensional structure synoptic diagram of the dull and stereotyped terahertz polarization beam splitter of the poroid hollow out of Y shape;
Fig. 3 is the two-dimensional structure synoptic diagram of the dull and stereotyped terahertz polarization beam splitter of the poroid hollow out of Y shape;
Fig. 4 is the two-dimensional structure synoptic diagram of the dull and stereotyped terahertz polarization beam splitter of the poroid hollow out of Y shape;
Fig. 5 is the structural representation and the sizing specification figure of poroid hollow out coupling regime;
Fig. 6 is TE, the TM ripple transmittance graph of terahertz polarization beam splitter first signal output part;
Fig. 7 is TM, the TE ripple transmittance graph of terahertz polarization beam splitter secondary signal output terminal.
Embodiment
Shown in Fig. 1 ~ 7, the dull and stereotyped terahertz polarization beam splitter of the poroid hollow out of Y shape comprises signal input part 1, first signal output part 2, secondary signal output terminal 3, flat-plate polarizing device 4, coarse pored hollow out 5, small pore-like hollow out 6, poroid hollow out coupling regime 7, the poroid hollow out of the poroid hollow out of first linear zone 8, second linear poroid hollow out zone the 9, the 3rd linear zone 10, the poroid hollow out of the poroid hollow out of sigmoid curve zone the 11, the 4th linear zone 12, the poroid hollow out of linear zone 13, the poroid hollow out of shaped form zone 14, the poroid hollow out of Y shape zone 15; Poroid hollow out coupling regime 7 is made up of the poroid hollow out of the poroid hollow out of second linear zone the 9 and the 3rd linear zone 10; The poroid hollow out of second linear zone 9 is arranged with a plurality of small pore-like hollow outs 6 equidistant linears at interval by a plurality of coarse pored hollow outs 5 and is constituted; The poroid hollow out of the poroid hollow out of the 3rd linear zone the 10 and the 4th linear zone 12 is arranged by a plurality of coarse pored hollow out 5 equidistant linears and is constituted, and the poroid hollow out of the poroid hollow out of the 3rd linear zone the 10 and the 4th linear zone 12 connects and composes the poroid hollow out of linear zone 13; The poroid hollow out of first linear zone 8 is arranged with a plurality of small pore-like hollow outs 6 equidistant linears at interval by a plurality of coarse pored hollow outs 5 and is constituted; The poroid hollow out of sigmoid curve zone 11 is arranged by a plurality of small pore-like hollow out 6 equidistant S shapes and is constituted, and the poroid hollow out of the poroid hollow out of first linear zone 8, second linear zone 9 links to each other in order with the poroid hollow out of sigmoid curve zone 11 and constitutes the poroid hollow out of shaped form zone 14; The poroid hollow out of Y shape zone 15 comprises the poroid hollow out of linear zone 13 and the poroid hollow out of shaped form zone 14 two parts.
In the described poroid hollow out coupling regime 7, the poroid hollow out centreline space of the poroid hollow out of the poroid hollow out of second linear zone the 9 and the 3rd linear regional 10 be 10 ~ 60 μ m apart from size.Describedly equidistantly be spaced the poroid hollow out of second linear that forms zone 9 by a plurality of coarse pored hollow outs 5 and a plurality of small pore-like hollow outs 6, its spacing is 40 μ m.Described coarse pored hollow out 5 radiuses are 3 ~ 18 μ m, and small pore-like hollow out 6 radiuses are 2.4 ~ 14.4 μ m.Described poroid hollow out coupling regime 7 length L are 60 ~ 400 μ m.The S curved angle θ in the poroid hollow out of described sigmoid curve zone 11 is 60 ~ 90 degree.The material of described flat-plate polarizing device 4 is a gallium arsenide.
Pitch of holes a on the dull and stereotyped terahertz polarization beam splitter of the poroid hollow out of Y shape is 40 μ m; Coupling spacing d is 24 μ m, and the radius R of coarse pored hollow out 5 is 9 μ m, and the radius r of small pore-like hollow out 6 is 7.2 μ m; The material of flat-plate polarizing device 4 is a GaAs material, and refractive index is 3.25.Coupling length L is 60 μ m, the adjacent poroid hollow out of crooked linear array in the transmission direction at first signal output part, 2 places, and its angle of bend θ is 90 degree.TE ripple, the TM ripple transmittance graph of first signal output part 2 of the dull and stereotyped terahertz polarization beam splitter of the poroid hollow out of Y shape are as shown in Figure 6, are 98% at 0.2 ~ 1.0THz frequency range TE ripple maximum transmission rate, and TM ripple minimum transmittance is 2%.TM ripple, the TE ripple transmittance graph of the secondary signal output terminal 3 of the dull and stereotyped terahertz polarization beam splitter of the poroid hollow out of Y shape are as shown in Figure 7, are 98.6% at 0.2 ~ 1.0THz frequency range TM ripple maximum transmission rate, and TE ripple minimum transmittance is 1. 2%.
Claims (7)
1. the dull and stereotyped terahertz polarization beam splitter of the poroid hollow out of Y shape is characterized in that comprising signal input part (1), first signal output part (2), secondary signal output terminal (3), flat-plate polarizing device (4), coarse pored hollow out (5), small pore-like hollow out (6), poroid hollow out coupling regime (7), the poroid hollow out zone of first linear (8), the poroid hollow out zone of second linear (9), the poroid hollow out zone of the 3rd linear (10), the poroid hollow out zone of sigmoid curve (11), the poroid hollow out zone of the 4th linear (12), the poroid hollow out zone of linear (13), the poroid hollow out zone of shaped form (14), the poroid hollow out zone of Y shape (15); Poroid hollow out coupling regime (7) is made up of poroid hollow out zone of second linear (9) and the poroid hollow out zone of the 3rd linear (10); The poroid hollow out zone of second linear (9) is arranged by a plurality of coarse pored hollow outs (5) and the equidistant linear at interval of a plurality of small pore-like hollow out (6) and is constituted; The poroid hollow out zone of poroid hollow out zone of the 3rd linear (10) and the 4th linear (12) is arranged by the equidistant linear of a plurality of coarse pored hollow outs (5) and is constituted, and the poroid hollow out zone of poroid hollow out zone of the 3rd linear (10) and the 4th linear (12) connects and composes the poroid hollow out of linear regional (13); The poroid hollow out zone of first linear (8) is arranged by a plurality of coarse pored hollow outs (5) and the equidistant linear at interval of a plurality of small pore-like hollow out (6) and is constituted; The poroid hollow out zone of sigmoid curve (11) is arranged by the equidistant S shape of a plurality of small pore-like hollow outs (6) and is constituted, and the poroid hollow out zone of first linear (8), the poroid hollow out zone of second linear (9) and the poroid hollow out of sigmoid curve regional (11) link to each other in order and constitute the poroid hollow out zone of shaped form (14); The poroid hollow out zone of Y shape (15) comprises the poroid hollow out zone of linear (13) and the poroid hollow out of shaped form zone (14) two parts.
2. the dull and stereotyped terahertz polarization beam splitter of the poroid hollow out of a kind of Y shape according to claim 1; It is characterized in that in the described poroid hollow out coupling regime (7), the poroid hollow out centreline space of the poroid hollow out of second linear zone (9) and the poroid hollow out of the 3rd linear regional (10) be 10 ~ 60 μ m apart from size.
3. the dull and stereotyped terahertz polarization beam splitter of the poroid hollow out of a kind of Y shape according to claim 1; It is characterized in that describedly equidistantly being spaced the poroid hollow out of second linear that forms zone (9) by a plurality of coarse pored hollow outs (5) and a plurality of small pore-like hollow out (6), its spacing is 40 μ m.
4. the dull and stereotyped terahertz polarization beam splitter of the poroid hollow out of a kind of Y shape according to claim 1 is characterized in that described coarse pored hollow out (5) radius is 3 ~ 18 μ m, and small pore-like hollow out (6) radius is 2.4 ~ 14.4 μ m.
5. a kind of Y shape according to claim 1 dull and stereotyped terahertz polarization beam splitter that punches is characterized in that described poroid hollow out coupling regime (7) length L is 60 ~ 400 μ m.
6. the dull and stereotyped terahertz polarization beam splitter of the poroid hollow out of a kind of Y shape according to claim 1, the S curved angle θ that it is characterized in that the poroid hollow out zone of described sigmoid curve (11) are 60 ~ 90 degree.
7. the dull and stereotyped terahertz polarization beam splitter of the poroid hollow out of a kind of Y shape according to claim 1, the material that it is characterized in that described flat-plate polarizing device (4) is a gallium arsenide.
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| CN2011100896612A CN102156328B (en) | 2011-04-11 | 2011-04-11 | Y-shaped porous hollowed slab terahertz wave polarizing beam splitter |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103018831A (en) * | 2012-12-24 | 2013-04-03 | 中国计量学院 | Terahertz wave polarization beam splitter with multiple banded structures |
| CN107643561A (en) * | 2017-11-07 | 2018-01-30 | 江西师范大学 | A kind of low-loss terahertz polarization beam splitter |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102937731B (en) * | 2012-10-09 | 2013-10-30 | 中国计量学院 | Terahertz wave polarization beam splitter based on porous hollow structure |
| CN102879862B (en) * | 2012-10-09 | 2013-10-09 | 中国计量学院 | Terahertz polarization beam splitter in branch structure |
| CN102902016B (en) * | 2012-10-09 | 2013-12-25 | 中国计量学院 | U-shaped TeraHertz wave polarization beam splitter with pore-shaped structure |
| CN103676182B (en) * | 2013-11-25 | 2015-08-05 | 中国计量学院 | Key shape terahertz polarization beam splitter |
| CN103885123B (en) * | 2014-04-16 | 2016-04-27 | 上海交通大学 | Random polarization state quantum bit projection separating chips and manufacture method thereof |
| CN107065069A (en) * | 2017-05-12 | 2017-08-18 | 深圳市太赫兹科技创新研究院 | Terahertz beam splitter |
| CN113764896B (en) * | 2021-08-26 | 2023-08-29 | 中国计量大学 | Terahertz wave angle deflection controller and method thereof |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100778887B1 (en) * | 2006-01-18 | 2007-11-22 | 재단법인서울대학교산학협력재단 | Shape Resonance Terahertz and Infrared Filters |
| CN101750751B (en) * | 2010-01-22 | 2012-02-15 | 中国计量学院 | Terahertz polarization beam splitter |
| CN202033528U (en) * | 2011-04-11 | 2011-11-09 | 中国计量学院 | Y-shaped porous hollow flat-plate terahertz wave polarization beam splitter |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103018831A (en) * | 2012-12-24 | 2013-04-03 | 中国计量学院 | Terahertz wave polarization beam splitter with multiple banded structures |
| CN103018831B (en) * | 2012-12-24 | 2014-07-02 | 中国计量学院 | Terahertz wave polarization beam splitter with multiple banded structures |
| CN107643561A (en) * | 2017-11-07 | 2018-01-30 | 江西师范大学 | A kind of low-loss terahertz polarization beam splitter |
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