CN202661674U - One-dimensional photonic crystal terahertz wave polarization beam splitter shaped like Chinese character er - Google Patents
One-dimensional photonic crystal terahertz wave polarization beam splitter shaped like Chinese character er Download PDFInfo
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- CN202661674U CN202661674U CN 201220298607 CN201220298607U CN202661674U CN 202661674 U CN202661674 U CN 202661674U CN 201220298607 CN201220298607 CN 201220298607 CN 201220298607 U CN201220298607 U CN 201220298607U CN 202661674 U CN202661674 U CN 202661674U
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Abstract
The utility model discloses a one-dimensional photonic crystal terahertz wave polarization beam splitter shaped like a Chinese character er. The polarization beam splitter comprises a signal input end, a first signal output end, a second signal output end, arched flat polarizers, straight flat polarizers, an arched coupling region and a straight coupling region, wherein the arched flat polarizers are formed by superposing arched flats; the straight flat polarizers are formed by superposing straight flats; the arched coupling region is formed by the arched flat polarizers and separates the arched flat polarizers; the straight coupling region is formed by the straight flat polarizers and separates the straight flat polarizers; the two ends of the straight coupling region are the signal input end and the first signal output end; and one end of the arched coupling region is the second signal output end. The polarization beam splitter has the advantages of simple structure, high beam splitting rate, small dimension, low cost, convenience in making and the like and meets the requirement of application in such fields as terahertz wave imaging, medical diagnosis and terahertz wave communication.
Description
Technical field
The utility model relates to beam splitter, relates in particular to a kind of youngster's font 1-D photon crystal terahertz polarization beam splitter.
Background technology
In recent years, as last exploited " virgin land " not in the electromagnetic wave spectrum, terahertz wave band gradually
Receive various countries scholar's concern.Terahertz electromagnetic wave has the frequency band that does not also have distribution of non-constant width, and have that transfer rate is high, good directionality, the numerous characteristics such as safe, scattering is little and penetrability is good, development Terahertz communication and other correlation technique have become the focus of each developed country's research.In fact as far back as 1896 and 1897, the research worker such as Rubens and Nichols has just carried out preliminary exploration to this wave band, and " terahertz " this term came across Fleming in one piece of report that IEEE delivers for the first time in 1974, and it is used to describe the spectral line frequency scope of Michelson interferometer.Subsequently, to appear at scholars' the frequency in the visual field more and more higher for Terahertz.1973, in the conference summary of IEEE MTT-S, the people such as Kerecman proposed Terahertz is applied in the frequency range of formed-point-contact diode detector, and the people such as Ashley and Palka propose it as the reference of water laser resonant frequency.In recent years, innovation and development along with photonics and nanometer technology, so that the research of Terahertz science is applied in the increasing field, such as quality management, global environment monitoring and the hypervelocity calculating etc. of information communication, biomedicine, nondestructive evaluation, national security, food and agricultural product.
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 youngster's font 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:
Youngster's font 1-D photon crystal terahertz polarization beam splitter comprises signal input part, first signal output terminal, secondary signal output terminal, arch flat-plate polarizing device, linear flat-plate polarizing device, arch coupling regime, linear coupling regime; Arch flat-plate polarizing device has the arch flat board to be formed by stacking, linear flat-plate polarizing device is formed by stacking by the linear flat board, the arch coupling regime is separated by arch flat-plate polarizing device and is formed, the linear coupling regime is separated by linear flat-plate polarizing device and is formed, the two-port of linear coupling regime is respectively signal input part, first signal output terminal, the arch coupling regime, arch coupling regime one port is the secondary signal output terminal.
Described banded arch coupling regime, width is 8mm-10mm.Described arch flat-plate polarizing device length 40-45mm.Described linear flat-plate polarizing device length 30-35mm.Described arch plate bending angle θ is 90 degree.
Symmetrical expression arch 1-D photon crystal terahertz polarization beam splitter of the present utility model has simple in structure, the beam splitting rate is high, and size is little, and cost is low, be convenient to the advantages such as making, satisfy 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 youngster's font 1-D photon crystal terahertz polarization beam splitter;
Fig. 2 is the port surface schematic diagram of youngster's font 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, youngster's font 1-D photon crystal terahertz polarization beam splitter comprises signal input part 1, first signal output terminal 2, secondary signal output terminal 3, arch flat-plate polarizing device 4, linear flat-plate polarizing device 5, arch coupling regime 6, linear coupling regime 7; Arch flat-plate polarizing device 4 has the arch flat board to be formed by stacking, linear flat-plate polarizing device 5 is formed by stacking by the linear flat board, arch coupling regime 6 is separated by arch flat-plate polarizing device 4 and is formed, linear coupling regime 7 is separated by linear flat-plate polarizing device 4 and is formed, the two-port of linear coupling regime 7 is respectively signal input part 1, first signal output terminal 2, arch coupling regime 6, arch coupling regime 6 one ports are secondary signal output terminal 3.
Described banded arch coupling regime 5, width is 8mm-10mm.Described arch flat-plate polarizing device 4 length 40-45mm.Described linear flat-plate polarizing device 5 length 30-35mm.Described arch plate bending angle θ is 90 degree.
On the symmetrical expression arch 1-D photon crystal terahertz polarization beam splitter, a is 2mm, and spacing d is 10mm, and arch flat-plate polarizing device 4 length 45mm, linear flat-plate polarizing device length 35mm, arch plate bending angle θ are 90 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, symmetrical expression arch coupling regime material is air n
0=1.The TE ripple of the first signal output terminal 2 of symmetrical expression arch 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 symmetrical expression arch 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 (5)
1. youngster's font 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), arch flat-plate polarizing device (4), linear flat-plate polarizing device (5), arch coupling regime (6), linear coupling regime (7); Arch flat-plate polarizing device (4) has the arch flat board to be formed by stacking, linear flat-plate polarizing device (5) is formed by stacking by the linear flat board, arch coupling regime (6) is separated by arch flat-plate polarizing device (4) and is formed, linear coupling regime (7) is separated by linear flat-plate polarizing device (4) and is formed, the two-port of linear coupling regime (7) is respectively signal input part (1), first signal output terminal (2), arch coupling regime (6), arch coupling regime (6) one ports are secondary signal output terminal (3).
2. a kind of youngster's font 1-D photon crystal terahertz polarization beam splitter according to claim 1,, it is characterized in that described banded arch coupling regime (5), width is 8mm-10mm.
3. a kind of youngster's font 1-D photon crystal terahertz polarization beam splitter according to claim 1,, it is characterized in that described arch flat-plate polarizing device (4) length 40-45mm.
4. a kind of youngster's font 1-D photon crystal terahertz polarization beam splitter according to claim 1,, it is characterized in that described linear flat-plate polarizing device (5) length 30-35mm.
5. a kind of youngster's font 1-D photon crystal terahertz polarization beam splitter according to claim 1,, it is characterized in that described arch plate bending angle θ is 90 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220298607 CN202661674U (en) | 2012-06-25 | 2012-06-25 | One-dimensional photonic crystal terahertz wave polarization beam splitter shaped like Chinese character er |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220298607 CN202661674U (en) | 2012-06-25 | 2012-06-25 | One-dimensional photonic crystal terahertz wave polarization beam splitter shaped like Chinese character er |
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| CN202661674U true CN202661674U (en) | 2013-01-09 |
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| CN 201220298607 Expired - Fee Related CN202661674U (en) | 2012-06-25 | 2012-06-25 | One-dimensional photonic crystal terahertz wave polarization beam splitter shaped like Chinese character er |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015149621A1 (en) * | 2014-03-31 | 2015-10-08 | Huawei Technologies Co., Ltd. | Apparatus and method for waveguide polarizer comprizing series of bends |
-
2012
- 2012-06-25 CN CN 201220298607 patent/CN202661674U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015149621A1 (en) * | 2014-03-31 | 2015-10-08 | Huawei Technologies Co., Ltd. | Apparatus and method for waveguide polarizer comprizing series of bends |
| CN106461871A (en) * | 2014-03-31 | 2017-02-22 | 华为技术有限公司 | Apparatus and method for waveguide polarizer comprising series of bends |
| US9690045B2 (en) | 2014-03-31 | 2017-06-27 | Huawei Technologies Co., Ltd. | Apparatus and method for a waveguide polarizer comprising a series of bends |
| CN106461871B (en) * | 2014-03-31 | 2019-08-20 | 华为技术有限公司 | For a series of apparatus and method including curved waveguide polarizers |
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| Date | Code | Title | Description |
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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 |