CN107065069A - Terahertz beam splitter - Google Patents
Terahertz beam splitter Download PDFInfo
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- CN107065069A CN107065069A CN201710335964.5A CN201710335964A CN107065069A CN 107065069 A CN107065069 A CN 107065069A CN 201710335964 A CN201710335964 A CN 201710335964A CN 107065069 A CN107065069 A CN 107065069A
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- terahertz
- beam splitter
- wave
- coupled end
- terahertz beam
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
- G02B6/12—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind
- G02B6/122—Basic optical elements, e.g. light-guiding paths
- G02B6/125—Bends, branchings or intersections
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Integrated Circuits (AREA)
- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
Abstract
The present invention relates to the Suo Mofei sonic wave guides that a kind of Terahertz beam splitter is Y-shaped structure, three ends of Y-shaped structure are respectively Terahertz coupled end and two Terahertz beam splitting arms, the Terahertz coupled end is used to couple and conduct Terahertz incidence wave, two Terahertz beam splitting arms are the Liang Ge branches branched away from the Terahertz coupled end, to form two beam Terahertz outgoing waves for the Terahertz incidence wave to be split and conduct；Utilize the surface plasmon polaritons of Suo Mofei sonic wave guides so that THz wave is propagated on the surface of the Suo Mofei sonic wave guides, and the beam splitting of THz wave is realized by the Liang Ge branches of Y-shaped structure；The Terahertz beam splitter structure is simple, has the advantages that big bandwidth, the low, dispersion of loss are low.
Description
Technical field
The present invention relates to electromagnetic wave beam splitting field, more particularly to a kind of Terahertz beam splitter.
Background technology
The electromagnetic wave of Terahertz frequency range has obtained increasingly being widely applied due to its own advantage, but is limited to Terahertz
The big bandwidth of frequency range, low-loss, the shortage of low dispersion waveguide structure, substantial amounts of Terahertz application are confined to free space light path, such as
What realizes that integrated Terahertz application is a significant problem.Wherein, the beam splitting for realizing THz wave is the base much applied
Plinth.
At present, due to waveguiding structure difficulty, the beam splitter for relying on waveguide transmission in Terahertz frequency range all has high be lost, greatly
The shortcoming of dispersion, it is impossible to enjoy Terahertz and compose the advantage that big bandwidth is brought.
The content of the invention
It is simple in construction based on this, it is necessary to provide a kind of Terahertz beam splitter, it is low with big bandwidth, the low, dispersion of loss
Advantage.
A kind of Terahertz beam splitter, the Terahertz beam splitter is the Suo Mofei sonic wave guides of Y-shaped structure, the Y-shaped
Three ends of structure are respectively：
Terahertz coupled end, for coupling and conducting Terahertz incidence wave；
Two Terahertz beam splitting arms, are the Liang Ge branches branched away from the Terahertz coupled end, for by the terahertz
Hereby incidence wave is split to form two beam Terahertz outgoing waves and conduct.
Above-mentioned Terahertz beam splitter is the Suo Mofei sonic wave guides of Y-shaped structure, and three ends of Y-shaped structure are respectively Terahertz
Coupled end and two Terahertz beam splitting arms, the Terahertz coupled end are used to couple and conduct Terahertz incidence wave, two Terahertzs
Beam splitting arm is the Liang Ge branches branched away from the Terahertz coupled end, to be formed for the Terahertz incidence wave to be split
Two beam Terahertz outgoing waves are simultaneously conducted；The Terahertz beam splitter utilizes the surface plasmon polaritons of Suo Mofei sonic wave guides,
So that THz wave is propagated on the surface of the Suo Mofei sonic wave guides, THz wave is realized by the Liang Ge branches of Y-shaped structure
Beam splitting；The Terahertz beam splitter structure is simple, has the advantages that big bandwidth, the low, dispersion of loss are low.
In one of the embodiments, the Suo Mofei sonic wave guides are the THz wave waveguide of bare metal line.
In one of the embodiments, the Terahertz incidence wave is the radial polarisation transmitted along the Terahertz coupled end
Terahertz traveling wave.
In one of the embodiments, the junction of each Terahertz beam splitting arm and the Terahertz coupled end is formed
Camber line.
In one of the embodiments, the radius of curvature of the camber line is bigger, and the Terahertz beam splitting crook of the arm is due to bending
Loss is smaller caused by leakage.
In one of the embodiments, a width of 0.1THz~5THz of band of the Suo Mofei sonic wave guides.
In one of the embodiments, the Terahertz coupled end and two Terahertz beam splitting arms are the naked gold of cylinder
Belong to line.
In one of the embodiments, the material of the bare metal line is gold or silver or copper.
In one of the embodiments, the material of the bare metal line is stainless steel.
Brief description of the drawings
Fig. 1 is the dimensional structure diagram of Terahertz beam splitter in an embodiment；
Fig. 2 is the work(point design sketch of Terahertz beam splitter in an embodiment；
Fig. 3 is the top view of Terahertz beam splitter in an embodiment；
Fig. 4 is the work(component efficiency curve of Terahertz beam splitter in an embodiment.
Embodiment
Referring to Fig. 1, Fig. 1 is the dimensional structure diagram of Terahertz beam splitter in an embodiment.
In the present embodiment, the Terahertz beam splitter is the Suo Mofei sonic wave guides of Y-shaped structure, the Y-shaped structure
Three ends are respectively Terahertz coupled end 10 and two Terahertz beam splitting arms 11,12.
When Suo Mofei sonic wave guides are used to conduct the electromagnetic wave of terahertz wave band, it is operated in surface plasmon polaritons,
Now THz wave is propagated on its surface.Further, the Suo Mofei sonic wave guides are the THz wave waveguide of bare metal line, can be with
Realize that the surface of THz wave is propagated, structure very simple, it can conduct the THz wave of big bandwidth, the specific Suo Mofei
A width of 0.1THz~the 5THz of band of sonic wave guide, it is low that low, dispersion is lost during being propagated by the waveguide in THz wave.
Terahertz coupled end 10 is used to couple and conduct Terahertz incidence wave.
Terahertz incidence wave enters Suo Mofei sonic wave guides from the Terahertz coupled end 10.Further, in order to by Terahertz
Incidence wave efficient coupling is to Suo Mofei sonic wave guides, and the Terahertz incidence wave uses the radial direction along the Terahertz coupled end 10 transmission inclined
Shake the Terahertz traveling wave of (TM01 moulds).
Two Terahertz beam splitting arms 11,12 are the Liang Ge branches branched away from the Terahertz coupled end 10, for by institute
Terahertz incidence wave is stated to be split to form two beam Terahertz outgoing waves and conduct.
Two Terahertz beam splitting arms 11,12 and the formation Y-shaped structure of Terahertz coupled end 10, wherein, two Terahertzs point
Beam arm 11,12 is the Liang Ge branches of the Y-shaped structure, and Terahertz incidence wave is coupled into after Terahertz coupled end 10, passes through knot
Two Terahertz beam splitting arms 11,12 of structure identical are propagated further, and realize beam splitting.Referring to Fig. 2, Fig. 2 is terahertz in an embodiment
Hereby the work(of beam splitter divides design sketch.Terahertz incidence wave enters the Terahertz beam splitter from Terahertz coupled end 10, along the terahertz
Beam splitting is produced when hereby the surface of coupled end 10 propagates to two Terahertz beam splitting arms 11,12, the weaker terahertz of two beam field strength is formed
Hereby outgoing wave and continue blazed abroad along the surface of the Terahertz beam splitting arm 11,12.The Terahertz beam splitter structure is simple, has
The low advantage of big bandwidth, the low, dispersion of loss.
Referring to Fig. 3, Fig. 3 is the top view of Terahertz beam splitter in an embodiment.Each Terahertz beam splitting arm 11,12
Camber line is formed with the junction of the Terahertz coupled end 10.Further, the radius of curvature of the camber line is bigger, Terahertz beam splitting
Arm is smaller due to loss caused by bending leakage.
In the Terahertz beam splitter of the Y-shaped structure, the loss of beam splitting is essentially from two aspects：One is in the Y words
The loss that the mode mismatch of the crotch of shape structure and reflection are caused；Two be metal wire bending caused by THz wave reveal.
The crotch is the junction of Terahertz beam splitting arm 11,12 and Terahertz coupled end 10.Referring to Fig. 4, the camber line of the junction is taken
Length is fixed value 50mm, fixes the corresponding radius of curvature of arc length and changes in the range of 50mm~150mm, is worked as by emulation
The field strength relation of single Terahertz outgoing wave and Terahertz incidence wave when radius of curvature changes.As can be seen that incrementally increasing camber line
Radius, i.e. radius of curvature, when radius of curvature R is more than 120mm, Terahertz beam splitting arm 11,12 caused by bending leakage due to damaging
Consumption substantially be suppressed, now the outgoing field strength of single Terahertz beam splitting arm 11,12 is up to about the 55% of incident field intensity, i.e., it is single too
The field strength of hertz outgoing wave is up to about the 55% of Terahertz incidence wave, in the beam splitting structure, energy utilization efficiency can of about 2 ×
(55%)2=60.5%.
In one of the embodiments, above-mentioned Terahertz coupled end 10 and two Terahertz beam splitting arms 11,12 are cylinder
The bare metal line of shape.
In one of the embodiments, the material of above-mentioned bare metal line can be the high gold, silver of electrical conductivity, copper or stainless
Steel etc..It can be selected according to practical application request, obtain a kind of simple in construction, with low cost, Terahertz point that loss is low
Beam device.
Above-mentioned Terahertz beam splitter can be obtained by machining process or 3D printing technique.
Above-mentioned Terahertz beam splitter uses the Suo Mofei sonic wave guides of Y-shaped structure, and three ends of the Y-shaped structure are respectively too
Hertz coupled end and two Terahertz beam splitting arms, utilize the surface plasmon polaritons of Suo Mofei sonic wave guides so that THz wave
Propagated on the surface of the Suo Mofei sonic wave guides, Terahertz incidence wave enters the beam splitter by Terahertz coupled end 10, passes through Y words
The corresponding two Terahertz beam splitting arm 11,12 of Liang Ge branches of shape structure realizes beam splitting, in order to suppress Y-shaped structure band in itself
The loss come, special radian design has been carried out to its crotch, the loss of the beam splitter has been further reduced, improves its energy
Measure utilization rate.The Terahertz beam splitter structure is simple, has the advantages that big bandwidth, the low, dispersion of loss are low.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope of this specification record is all considered to be.
Embodiment described above only expresses the several embodiments of the present invention, and it describes more specific and detailed, but simultaneously
Can not therefore it be construed as limiting the scope of the patent.It should be pointed out that coming for one of ordinary skill in the art
Say, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention
Scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (9)
1. a kind of Terahertz beam splitter, it is characterised in that the Terahertz beam splitter is the Suo Mofei sonic wave guides of Y-shaped structure,
Three ends of the Y-shaped structure are respectively：
Terahertz coupled end, for coupling and conducting Terahertz incidence wave；
Two Terahertz beam splitting arms, are the Liang Ge branches branched away from the Terahertz coupled end, for the Terahertz to be entered
Ejected wave is split to form two beam Terahertz outgoing waves and conduct.
2. Terahertz beam splitter according to claim 1, it is characterised in that the Suo Mofei sonic wave guides are bare metal line
THz wave waveguide.
3. Terahertz beam splitter according to claim 1, it is characterised in that the Terahertz incidence wave is along the terahertz
The Terahertz traveling wave of the radial polarisation of hereby coupled end transmission.
4. Terahertz beam splitter according to claim 2, it is characterised in that each Terahertz beam splitting arm and it is described too
The junction of hertz coupled end forms camber line.
5. Terahertz beam splitter according to claim 4, it is characterised in that the radius of curvature of the camber line is bigger, described
Terahertz beam splitting arm is smaller due to loss caused by bending leakage.
6. Terahertz beam splitter according to claim 1, it is characterised in that the band of the Suo Mofei sonic wave guides is a width of
0.1THz~5THz.
7. Terahertz beam splitter according to claim 2, it is characterised in that the Terahertz coupled end and two Terahertzs
Beam splitting arm is the bare metal line of cylinder.
8. Terahertz beam splitter according to claim 2, it is characterised in that the material of the bare metal line for gold or silver or
Copper.
9. Terahertz beam splitter according to claim 2, it is characterised in that the material of the bare metal line is stainless steel.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710335964.5A CN107065069A (en) | 2017-05-12 | 2017-05-12 | Terahertz beam splitter |
| PCT/CN2018/080783 WO2018205762A1 (en) | 2017-05-12 | 2018-03-28 | Terahertz beam splitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710335964.5A CN107065069A (en) | 2017-05-12 | 2017-05-12 | Terahertz beam splitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107065069A true CN107065069A (en) | 2017-08-18 |
Family
ID=59597096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710335964.5A Pending CN107065069A (en) | 2017-05-12 | 2017-05-12 | Terahertz beam splitter |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN107065069A (en) |
| WO (1) | WO2018205762A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018205762A1 (en) * | 2017-05-12 | 2018-11-15 | 深圳市太赫兹科技创新研究院 | Terahertz beam splitter |
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| JPH0980361A (en) * | 1995-09-12 | 1997-03-28 | Hitachi Ltd | Method and device for light signal processing |
| CN101750751A (en) * | 2010-01-22 | 2010-06-23 | 中国计量学院 | Terahertz polarization beam splitter |
| CN102156328A (en) * | 2011-04-11 | 2011-08-17 | 中国计量学院 | Y-shaped porous hollowed slab terahertz wave polarizing beam splitter |
| CN102156327A (en) * | 2011-04-11 | 2011-08-17 | 中国计量学院 | Terahertz wave polarizing beam splitter with dual resonance cavity structure |
| CN102290624A (en) * | 2011-05-11 | 2011-12-21 | 东南大学 | Multidirectional surface wave separator |
| CN202661667U (en) * | 2012-06-25 | 2013-01-09 | 中国计量学院 | Y-shaped one-dimensional photonic crystal terahertz wave polarization beam splitter |
| CN102902016A (en) * | 2012-10-09 | 2013-01-30 | 中国计量学院 | U-shaped TeraHertz wave polarization beam splitter with pore-shaped structure |
| CN102928996A (en) * | 2012-10-12 | 2013-02-13 | 中国计量学院 | Electronic control terahertz wave polarization beam splitter |
| CN102928926A (en) * | 2012-10-12 | 2013-02-13 | 中国计量学院 | Slotted branch type terahertz wave polarization beam splitter |
| CN103457009A (en) * | 2013-08-16 | 2013-12-18 | 上海理工大学 | Terahertz low-loss bent waveguide |
| CN104078732A (en) * | 2014-03-25 | 2014-10-01 | 浙江大学 | Terahertz wave transmission power splitting and combining structure |
Family Cites Families (3)
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|---|---|---|---|---|
| US9178282B2 (en) * | 2004-07-14 | 2015-11-03 | William Marsh Rice University | Method for coupling terahertz pulses into a coaxial waveguide |
| CN103499855B (en) * | 2013-10-15 | 2015-06-10 | 北京航空航天大学 | Photonic crystal optical fiber coupler and manufacturing 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 |
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2017
- 2017-05-12 CN CN201710335964.5A patent/CN107065069A/en active Pending
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2018
- 2018-03-28 WO PCT/CN2018/080783 patent/WO2018205762A1/en active Application Filing
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0980361A (en) * | 1995-09-12 | 1997-03-28 | Hitachi Ltd | Method and device for light signal processing |
| CN101750751A (en) * | 2010-01-22 | 2010-06-23 | 中国计量学院 | Terahertz polarization beam splitter |
| CN102156328A (en) * | 2011-04-11 | 2011-08-17 | 中国计量学院 | Y-shaped porous hollowed slab terahertz wave polarizing beam splitter |
| CN102156327A (en) * | 2011-04-11 | 2011-08-17 | 中国计量学院 | Terahertz wave polarizing beam splitter with dual resonance cavity structure |
| CN102290624A (en) * | 2011-05-11 | 2011-12-21 | 东南大学 | Multidirectional surface wave separator |
| CN202661667U (en) * | 2012-06-25 | 2013-01-09 | 中国计量学院 | Y-shaped one-dimensional photonic crystal terahertz wave polarization beam splitter |
| CN102902016A (en) * | 2012-10-09 | 2013-01-30 | 中国计量学院 | U-shaped TeraHertz wave polarization beam splitter with pore-shaped structure |
| CN102928996A (en) * | 2012-10-12 | 2013-02-13 | 中国计量学院 | Electronic control terahertz wave polarization beam splitter |
| CN102928926A (en) * | 2012-10-12 | 2013-02-13 | 中国计量学院 | Slotted branch type terahertz wave polarization beam splitter |
| CN103457009A (en) * | 2013-08-16 | 2013-12-18 | 上海理工大学 | Terahertz low-loss bent waveguide |
| CN104078732A (en) * | 2014-03-25 | 2014-10-01 | 浙江大学 | Terahertz wave transmission power splitting and combining structure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018205762A1 (en) * | 2017-05-12 | 2018-11-15 | 深圳市太赫兹科技创新研究院 | Terahertz beam splitter |
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| Publication number | Publication date |
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| WO2018205762A1 (en) | 2018-11-15 |
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Application publication date: 20170818 |