CN202661673U - Polarization beam splitter for terahertz waves of n-shaped one-dimensional photonic crystals - Google Patents
Polarization beam splitter for terahertz waves of n-shaped one-dimensional photonic crystals Download PDFInfo
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- CN202661673U CN202661673U CN 201220298600 CN201220298600U CN202661673U CN 202661673 U CN202661673 U CN 202661673U CN 201220298600 CN201220298600 CN 201220298600 CN 201220298600 U CN201220298600 U CN 201220298600U CN 202661673 U CN202661673 U CN 202661673U
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- 230000010287 polarization Effects 0.000 title claims abstract description 27
- 239000004038 photonic crystal Substances 0.000 title abstract 2
- 230000008878 coupling Effects 0.000 claims abstract description 11
- 238000010168 coupling process Methods 0.000 claims abstract description 11
- 238000005859 coupling reaction Methods 0.000 claims abstract description 11
- 239000013078 crystal Substances 0.000 claims description 18
- 238000005452 bending Methods 0.000 claims description 7
- 238000004891 communication Methods 0.000 abstract description 3
- 238000003745 diagnosis Methods 0.000 abstract description 2
- 238000003384 imaging method Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 6
- 238000002834 transmittance Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 230000005428 wave function Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 230000000295 complement effect Effects 0.000 description 1
- 229910021419 crystalline silicon Inorganic materials 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
本实用新型公开了一种n形一维光子晶体太赫兹波偏振分束器。L形平板偏振器由L形平板叠加而成，小L形平板偏振器由小的L形平板叠加而成，U形平板偏振器由U形平板叠加而成，带状n字形耦合区域由L形平板偏振器、小L形平板偏振器、U形平板偏振器分隔组成，L形平板偏振器一端与小L形平板偏振器一端组成的端口为信号输入端，L形平板偏振器另一端与U形平板偏振器一端组成的端口为第二信号输出端，小L形平板偏振器另一端与U形平板偏振器另一端组成的端口为第一信号输出端。本实用新型具有结构简单，分束率高，尺寸小，成本低，便于制作等优点，满足在太赫兹波成像、医学诊断、太赫兹波通信等领域应用的要求。
The utility model discloses an n-shaped one-dimensional photonic crystal terahertz wave polarization beam splitter. The L-shaped plate polarizer is formed by stacking L-shaped plates, the small L-shaped plate polarizer is formed by stacking small L-shaped plates, the U-shaped plate polarizer is formed by stacking U-shaped plates, and the strip-shaped n-shaped coupling area is formed by L Shaped plate polarizer, small L-shaped plate polarizer, and U-shaped plate polarizer are separated. The port composed of one end of the L-shaped plate polarizer and one end of the small L-shaped plate polarizer is the signal input port, and the other end of the L-shaped plate polarizer is connected to the The port formed by one end of the U-shaped flat polarizer is the second signal output end, and the port formed by the other end of the small L-shaped flat polarizer and the other end of the U-shaped flat polarizer is the first signal output end. The utility model has the advantages of simple structure, high beam splitting rate, small size, low cost, easy manufacture, etc., and meets the application requirements in the fields of terahertz wave imaging, medical diagnosis, terahertz wave communication and the like.
Description
Technical field
The utility model relates to beam splitter, relates in particular to a kind of n shape 1-D photon crystal terahertz polarization beam splitter.
Background technology
THz wave is the electromagnetic wave in frequency 0.1 ~ 10THz (1 TH z=1012Hz) scope, and the wavelength coverage of its correspondence is 3mm ~ 30 μ m, is positioned between millimeter wave (submillimeter wave) and the infrared waves.The corresponding energy range of Terahertz photon is 0.414 ~ 41.4meV, is complementary with low-frequency vibration and the rotational energy scope of molecule and material.These determined THz wave in electromagnetic spectrum specific position and in propagation, scattering, reflection, aspect and millimeter wave, significantly different characteristics and the application of infrared ray such as absorb, penetrate.And Terahertz Technology also will for people to the sign of material with control the free space that provides very large.
The THz wave communication system be unable to do without the performance guarantee of various THz wave function elements.Although although domestic and international gradually expansion of research for the THz wave function element, the Focal point 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 to 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 the THz wave of control THz wave system.Lot of domestic and international scientific research institution all is devoted to the research of this respect and makes some progress at present, but relevant report is seldom arranged.Existing terahertz polarization beam splitter often complex structure, volume is larger and expensive, miniaturization, the THz wave device is the key that the THz wave technology is used cheaply, therefore be necessary to design a kind of simple in structure, the terahertz polarization beam splitter that beam splitting efficient is high is used needs to satisfy following THz wave technology.
Summary of the invention
The purpose of this utility model is lower in order to overcome prior art polarization beam splitting transmissivity, complex structure, and the actual fabrication difficulty, the deficiency that cost is high provides a kind of n shape 1-D photon crystal terahertz polarization beam splitter.。
In order to achieve the above object, the technical solution of the utility model is as follows:
N shape 1-D photon crystal terahertz polarization beam splitter comprises signal input part, first signal output terminal, secondary signal output terminal, L shaped flat-plate polarizing device, little L shaped flat-plate polarizing device, horseshoe clamp plate polarizer, n shape coupling regime; L shaped flat-plate polarizing device is formed by stacking by L shaped flat board, little L shaped flat-plate polarizing device is formed by stacking by little L shaped flat board, horseshoe clamp plate polarizer is formed by stacking by the horseshoe clamp plate, banded n font coupling regime is by L shaped flat-plate polarizing device, little L shaped flat-plate polarizing device, horseshoe clamp plate polarizer is separated and is formed, the port that L shaped flat-plate polarizing device one end and little L shaped flat-plate polarizing device one end form is signal input part, the port that the L shaped flat-plate polarizing device other end and horseshoe clamp plate polarizer one end form is the secondary signal output terminal, and the port that the little L shaped flat-plate polarizing device other end and the horseshoe clamp plate polarizer other end form is the first signal output terminal.
Described banded n font coupling regime, width is 8mm-10mm.Described L shaped flat-plate polarizing device length 70-75mm.Described little L shaped flat-plate polarizing device length is 40 ~ 45mm.Described horseshoe clamp plate polarizer length is 40 ~ 45mm.Described L shaped plate bending angle θ is 90 degree.Described u shape plate bending angle θ is 180 degree.
N shape 1-D photon crystal terahertz polarization beam splitter of the present utility model has simple in structure, and the beam splitting rate is high, and size is little, and cost is low, is convenient to the 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 structural representation of n shape 1-D photon crystal terahertz polarization beam splitter;
Fig. 2 is the port surface synoptic diagram of n shape 1-D photon crystal terahertz polarization beam splitter;
Fig. 3 is TE, the TM ripple transmittance graph of terahertz polarization beam splitter first signal output terminal;
Fig. 4 is TM, the TE ripple transmittance graph of terahertz polarization beam splitter secondary signal output terminal.
Embodiment
Shown in Fig. 1 ~ 4, n shape 1-D photon crystal terahertz polarization beam splitter comprises signal input part 1, first signal output terminal 2, secondary signal output terminal 3, L shaped flat-plate polarizing device 4, little L shaped flat-plate polarizing device 5, horseshoe clamp plate polarizer 6, n shape coupling regime 7; L shaped flat-plate polarizing device 4 is formed by stacking by L shaped flat board, little L shaped flat-plate polarizing device 5 is formed by stacking by little L shaped flat board, horseshoe clamp plate polarizer 6 is formed by stacking by the horseshoe clamp plate, banded n font coupling regime 7 is by L shaped flat-plate polarizing device 4, little L shaped flat-plate polarizing device 5, horseshoe clamp plate polarizer 6 is separated and is formed, the port that L shaped flat-plate polarizing device 4 one ends and little L shaped flat-plate polarizing device 5 one ends form is signal input part 1, the port that L shaped flat-plate polarizing device 4 other ends and horseshoe clamp plate polarizer 6 one ends form is secondary signal output terminal 3, and the port that little L shaped flat-plate polarizing device 5 other ends and horseshoe clamp plate polarizer 6 other ends form is first signal output terminal 2.
Described banded n font coupling regime 7, width is 8mm-10mm.Described L shaped flat-plate polarizing device 4 length 70-75mm.Described little L shaped flat-plate polarizing device 5 length are 40 ~ 45mm.Described horseshoe clamp plate polarizer 5 length are 40 ~ 45mm.Described L shaped plate bending angle θ is 90 degree.Described u shape plate bending angle θ is 180 degree.
Embodiment 1
On the n shape 1-D photon crystal terahertz polarization beam splitter, a is 2mm, and spacing d is 10mm, L shaped flat-plate polarizing device 4 length 5mm, and described little L shaped flat-plate polarizing device 5 length are 40mm, described horseshoe clamp plate polarizer 6 length are 40mm, L shaped plate bending angle θ
1Being is 90 degree.Described horseshoe clamp plate angle of bend θ
2Be 180 degree.Material is polymkeric substance and crystalline silicon adjacent distributions material, and refractive index is respectively n
1=3.42 and n
2=1.6, n shape coupling regime material is air n
0=1.L shaped flat-plate polarizing device angle of bend θ is 90 degree.The TE ripple of the first signal output terminal 2 of T shape 1-D photon crystal terahertz polarization beam splitter, TM ripple transmittance graph are that 99%, TM ripple minimum transmittance is 1% at 0.1 ~ 1.0THz frequency range TE ripple maximum transmission rate as shown in Figure 3.The TM ripple of the secondary signal output terminal 3 of T shape 1-D photon crystal terahertz polarization beam splitter, TE ripple transmittance graph are that 98%, TE ripple minimum transmittance is 1% at 0.1 ~ 1.0THz frequency range TM ripple maximum transmission rate as shown in Figure 4.
Claims (7)
1. a n shape 1-D photon crystal terahertz polarization beam splitter is characterized in that comprising signal input part (1), first signal output terminal (2), secondary signal output terminal (3), L shaped flat-plate polarizing device (4), little L shaped flat-plate polarizing device (5), horseshoe clamp plate polarizer (6), n shape coupling regime (7); L shaped flat-plate polarizing device (4) is formed by stacking by L shaped flat board, little L shaped flat-plate polarizing device (5) is formed by stacking by little L shaped flat board, horseshoe clamp plate polarizer (6) is formed by stacking by the horseshoe clamp plate, banded n font coupling regime (7) is by L shaped flat-plate polarizing device (4), little L shaped flat-plate polarizing device (5), horseshoe clamp plate polarizer (6) is separated and is formed, the port that L shaped flat-plate polarizing device (4) one ends and little L shaped flat-plate polarizing device (5) one ends form is signal input part (1), the port that L shaped flat-plate polarizing device (4) other end and horseshoe clamp plate polarizer (6) one ends form is secondary signal output terminal (3), and the port that little L shaped flat-plate polarizing device (5) other end and horseshoe clamp plate polarizer (6) other end form is first signal output terminal (2).
2. a kind of n shape 1-D photon crystal terahertz polarization beam splitter according to claim 1 is characterized in that described banded n font coupling regime (7), and width is 8mm-10mm.
3. a kind of n shape 1-D photon crystal terahertz polarization beam splitter according to claim 1 is characterized in that described L shaped flat-plate polarizing device (4) length 70-75mm.
4. a kind of n shape 1-D photon crystal terahertz polarization beam splitter according to claim 1 is characterized in that described little L shaped flat-plate polarizing device (5) length is 40 ~ 45mm.
5. a kind of n shape 1-D photon crystal terahertz polarization beam splitter according to claim 1 is characterized in that described horseshoe clamp plate polarizer (5) length is 40 ~ 45mm.
6. a kind of n shape 1-D photon crystal terahertz polarization beam splitter according to claim 1 is characterized in that described L shaped plate bending angle θ is 90 degree.
7. a kind of n shape 1-D photon crystal terahertz polarization beam splitter according to claim 1 is characterized in that described u shape plate bending angle θ is 180 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220298600 CN202661673U (en) | 2012-06-25 | 2012-06-25 | Polarization beam splitter for terahertz waves of n-shaped one-dimensional photonic crystals |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220298600 CN202661673U (en) | 2012-06-25 | 2012-06-25 | Polarization beam splitter for terahertz waves of n-shaped one-dimensional photonic crystals |
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| CN202661673U true CN202661673U (en) | 2013-01-09 |
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| CN 201220298600 Expired - Fee Related CN202661673U (en) | 2012-06-25 | 2012-06-25 | Polarization beam splitter for terahertz waves of n-shaped one-dimensional photonic crystals |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105044841A (en) * | 2015-09-06 | 2015-11-11 | 中国计量学院 | Terahertz wave polarization beam splitter based on multiple dielectric cylinder structures |
| CN105866886A (en) * | 2016-06-23 | 2016-08-17 | 中国计量大学 | Terahertz wave polarization beam splitter with various-air-hole hollowed-out flat plate structure |
-
2012
- 2012-06-25 CN CN 201220298600 patent/CN202661673U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105044841A (en) * | 2015-09-06 | 2015-11-11 | 中国计量学院 | Terahertz wave polarization beam splitter based on multiple dielectric cylinder structures |
| CN105044841B (en) * | 2015-09-06 | 2017-11-03 | 中国计量学院 | Terahertz polarization beam splitter based on medium rod structure |
| CN105866886A (en) * | 2016-06-23 | 2016-08-17 | 中国计量大学 | Terahertz wave polarization beam splitter with various-air-hole hollowed-out flat plate structure |
| CN105866886B (en) * | 2016-06-23 | 2018-11-20 | 中国计量大学 | The terahertz polarization beam splitter of a variety of airport hollow out slab constructions |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130109 Termination date: 20130625 |