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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Abstract
The utility model discloses a polarization beam splitter for terahertz waves of n-shaped one-dimensional photonic crystals. An L-shaped flat plate polarization apparatus is formed by stacking L-shaped flat plates; a small L-shaped flat plate polarization apparatus is formed by stacking small L-shaped flat plates; a U-shaped flat plate polarization apparatus is formed by stacking U-shaped flat plates; a banded n-shaped coupling area consists of the L-shaped flat plate polarization apparatus, the small L-shaped flat plate polarization apparatus and the U-shaped flat plate polarization apparatus at intervals; a port which is formed by one end of the L-shaped flat plate polarization apparatus and one end of the small L-shaped flat plate polarization apparatus is a signal input end; a port which is formed by the other end of the L-shaped flat plate polarization apparatus and one end of the U-shaped flat plate polarization apparatus is a second signal output end; and a port which is formed by the other end of the small L-shaped flat plate polarization apparatus and the other end of the U-shaped flat plate polarization apparatus is a first signal output end. The polarization beam splitter has the advantages of simple structure, high beam splitting rate, small size, low cost, convenience in manufacturing and the like, and meets requirements of application 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 |
Applications Claiming Priority (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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| Publication Number | Publication Date |
|---|---|
| CN202661673U true CN202661673U (en) | 2013-01-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| 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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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |