CN104950477A - Multi-channel terahertz wave modulation method and system - Google Patents
Multi-channel terahertz wave modulation method and system Download PDFInfo
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Abstract
The invention relates to a multi-channel terahertz wave modulation method. Incident terahertz waves pass through a terahertz wave collimator to become a collimated wave beam, the collimated wave beam sequentially enters multiple overlapped independent modulation channel modules to be independently modulated, each independent modulation channel module outputs an independent modulation signal, then all the output independent modulation signals are sequentially combined through terahertz wave channel combiners in the modulation channel modules and output uniformly from a system output opening, and clutter absorption devices are arranged in the independent modulation channel modules with the terahertz wave channel combiners. A system is composed of multiple terahertz wave modulator module units of different types in a free combination mode, and the purpose of increasing or decreasing the number of channels of modulation terahertz waves is quite easy and convenient to achieve; the function of performing selective modulation on specific channels (wave bands) is achieved, wave absorbers are used, in this way, disturbance of clutters or terahertz waves of non-attention wave bands is further reduced, and then the signal-to-noise ratio is further optimized.
Description
Technical field
The present invention relates to a kind of THz wave communication technology, particularly a kind of multi-channel terahertz ripple modulator approach and system.
Background technology
THz wave is an electromagnetic wave frequency range between infrared and microwave, is usually defined as by 0.1THz ~ 10THz " THz Gap ", i.e. terahertz wave band.The electromagnetic wave of this wave band has the directivity of visible ray and the penetration capacity of microwave concurrently.This wave band has the characteristics such as carry information amount is abundant, high temporal and spatial coherence, low photon energy, has huge using value in the scientific domain such as astronomy, biology, computing machine, communication.Understand along with to the degree of depth of THz wave and Terahertz Technology, Terahertz Technology plays a part very important in fields such as biomedicine, safety monitoring, nondestructive detecting, spectrum and imaging technique and military project radars.How effectively Terahertz Technology develops further, generation and detection THz wave is obtained and solves preferably, but, manipulate THz wave expeditiously and need to solve.And address this problem, and develop terahertz wave band further, all be unable to do without Terahertz function element.Terahertz modulator is as a critical component of manipulation terahertz signal transmission system, and the further application of its correlative study to Terahertz Technology is significant, its range of application mainly in Terahertz communication, the many aspects such as terahertz imaging and sensing.Therefore the development of terahertz wave modulator also attention always.But because natural material is very faint to the electromagnetic response of terahertz wave band, be difficult to be applied to handle THz wave, thus compared to the develop rapidly of terahertz sources and Detection Techniques, the technology of manipulation Terahertz but seems and makes slow progress.1999, Pendry proposed split ring resonator (SRR) this concept, and the appearance of Meta Materials (Metamaterials, MMs) further promotes the development of Terahertz Technology, particularly, and the development of Terahertz function element.Metamaterial can realize electromagnetic regulation and control in a kind of mode of novelty, and regulates its resonant frequency by the physical dimension changing Metamaterials, and therefore terahertz wave band Metamaterials is but easy to realize.
Terahertz wave modulator can be divided into according to different modulation systems, light-operated Terahertz modulator, automatically controlled terahertz wave modulator, temperature control terahertz wave modulator, the Terahertz modulator of magnetic control Terahertz modulator and Mechanical course.Automatically controlled terahertz wave modulator is the one being the most easily integrated in chip top in five kinds of modulators, and it is the MMs adhered on a semiconductor substrate actually, can regulate its strength of resonance, and then regulate its transmissison characteristic by extrinsic motivated.Automatically controlled terahertz wave modulator can be integrated on chip, and this will have important application in Terahertz short distance secure communication etc.2006, H-T Chen etc. proposes an automatically controlled terahertz wave modulator based on MMS, device surface metal just jointly defines an equivalent schottky diode (Schottkg Diode) with contacting of semiconductor base, load certain voltage between the Ohmic contact and device architecture of device, the modulation of the transmissivity to incident THz wave can be realized.2009, O. Paul proposed a kind of automatically controlled terahertz wave modulator based on Meta Materials too, but its device has the irrelevant characteristic of polarization.2004, the appearance of Graphene (Graphene) provided another platform in order to automatically controlled terahertz wave modulator.2014, X. He proposes an automatically controlled terahertz wave modulator based on Graphene, by loading bias voltage on surface metal and graphene substrate, by changing the Fermi level (Fermi level) of Graphene, and then change the concentration class of carrier concentration in Graphene, finally change through the transmissivity of THz wave of device.But the automatically controlled terahertz wave modulator that obtains of market research that also has more than be mentioned to all mostly just only has a service aisle, namely only have one independently frequency range can to modify tone system.And the communications field needs to carry out separate modulation to the signal of each frequency range usually.In this respect, these modulation devices above-mentioned just often directly cannot meet relevant application demand.
Summary of the invention
The present invention be directed to existing automatically controlled terahertz wave modulator only can modulate one or the interlock multiple frequency range of modulation and the problem of separate modulation can not be carried out respectively to multiple frequency range, propose a kind of passage THz wave modulator approach and system, for the demand of the communications field, modulate two kinds of technology in conjunction with spatial modulation and integrated chip, achieve the THz wave modulating system possessing multiband separate modulation ability dexterously.
Technical scheme of the present invention is: a kind of multi-channel terahertz ripple modulator approach, incident THz wave becomes collimated wave beam after THz wave collimating apparatus, several separate modulation channel modules that collimated wave beam enters superposition successively carry out separate modulation, each separate modulation channel module exports separate modulated signals, after each separate modulated signals exported closes road successively by the THz wave passage combiner in modulation channels module again, unified from System Outlet output, there is clutter absorption plant in the separate modulation channel module of band THz wave passage combiner.
The modulating system of described multi-channel terahertz ripple modulator approach, comprise 3 the separate modulation channel modules and THz wave collimating apparatus that superpose successively, the first THz wave channel to channel adapter and the first terahertz wave modulator respectively left and right are placed in composition first separate modulation channel module in the first modulation channels module package box; Second THz wave channel to channel adapter, integrated terahertz wave modulator, the first THz wave passage combiner respectively left, center, right are placed in composition second separate modulation channel module in the second modulation channels module; Second terahertz wave modulator, the second THz wave passage combiner respectively left and right are placed in composition the 3rd separate modulation channel module in the 3rd modulation channels module; THz wave collimating apparatus, the first THz wave channel to channel adapter, the second THz wave channel to channel adapter, the second terahertz wave modulator are from bottom to up on the same axis; First terahertz wave modulator, the first THz wave passage combiner, the second THz wave passage combiner from bottom to up on the same axis, incident THz wave
f o after THz wave collimating apparatus, become collimated wave beam, the first THz wave channel to channel adapter that collimated wave beam inputs in first separate modulation channel module is separated, a branch of THz wave
f 1 selective reflecting is modulated to the first terahertz wave modulator
f 1 ' , another bundle is transmitted in second separate modulation channel module, is separated, a branch of THz wave through the second THz wave channel to channel adapter
f n reflection is modulated to through integrated terahertz wave modulator
f n ' , another bundle
f r be transmitted in the 3rd separate modulation channel module, be adjusted to through the second terahertz wave modulator
f r ' , THz wave after the modulation of first separate modulation channel module output
f 1 ' after the second separate modulation channel module modulation
f n ' , carry out conjunction road by the first THz wave passage combiner and output in the 3rd separate modulation channel module, then after being modulated by the second THz wave passage combiner and the 3rd separate modulation channel module
f r ' carry out conjunction road, unified to export from the 3rd separate modulation channel module delivery outlet, second and the 3rd also has clutter absorption plant in modulation channels module package box.
Two can be selected arbitrarily to superpose for described 3 separate modulation channel modules and THz wave collimating apparatus forms system.
Described 3 separate modulation channel modules can select arbitrarily one separately and THz wave collimating apparatus form system.
Described THz wave channel to channel adapter is the spatial filter based on metamaterial, with the corresponding THz wave that need modulate, coupling of resonating occurs.
Described terahertz wave modulator is automatically controlled galvanometer.
Described integrated terahertz wave modulator is the automatically controlled terahertz wave modulator of based semiconductor.
Described THz wave passage combiner is the spatial filter based on metamaterial, with the corresponding THz wave that need modulate, coupling of resonating occurs.
Described modulation channels module package box provides combined and spliced window between module and module and locking device, also lays the control circuit of each modulation device in modulation channels module package box, to realize still can work independently when module splits.
Beneficial effect of the present invention is: passage THz wave modulator approach of the present invention and system, is a kind of modular dexterous system, can realize the object of multi-channel terahertz ripple independent operation separately; System is made up of the terahertz wave modulator modular unit of number of different types, associated modulation module can need to carry out combination in any according to user, carry out the THz wave modulating system modulated for specific band with formation, the system combined can be simple free space binary channels THz wave modulating system, also can be the modulating system only containing integrated list/multi-channel terahertz wave modulator; The method applied in the present invention and system additionally provide the sufficient expandability of multi-channel terahertz ripple modulating system, for by system, by increasing/subtracting the mode of modulation module, expansion can also be realized very easily or reduces the object can modulating the port number of THz wave; And wherein based on the integrated automatically controlled terahertz wave modulator of metamaterial, the mode of preferred cell structure and size can be passed through again, realize the selectivity modulation function to special modality (wave band), the selection of its passage (wave band) can realize simply by the mode changing device architecture or physical dimension very much; Based on " antistructure ", (to device layout of the present invention main structure unit allow specific band THz wave to pass through, periphery is then covered by metal thus limits the current of the THz wave of its non-selected wave band), the more effective THz wave completely cutting off non-selected wave band, thus greatly can improve the signal to noise ratio (S/N ratio) of system; And inhale the use of the devices such as ripple device, then further reduce the interference of the THz wave of clutter or non-interesting wave band, thus optimize signal to noise ratio (S/N ratio) further.
Accompanying drawing explanation
Fig. 1 is passage THz wave modulating system structural representation of the present invention;
Fig. 2 is the exemplary plot of the present invention's integrated single channel terahertz wave modulator selectable unit structure;
Fig. 3 is the structure Dual_A schematic diagram of the integrated binary channels modulator of the present invention;
Fig. 4 is the present invention's integrated binary channels terahertz wave modulator structure Dual_B schematic diagram;
Fig. 5 is the CST analogue simulation figure of the present invention's integrated binary channels terahertz wave modulator structure Dual_B modulation effect;
Fig. 6 is the schematic diagram of free space binary channels THz wave modulating system of the present invention;
Fig. 7 is the integrated list of the present invention/multi-channel terahertz wave modulator module diagram.
Embodiment
Be separated by passage (wave band) THz wave to incidence, the THz wave of different passage (wave band) is made to lead to System Outlet via different optical paths, and then on the way, separate modulation is carried out to the THz wave of different passage (wave band), thus realize the independent loads of the modulation signal of each autonomous channel, and the modulated multi-channel terahertz ripple signal made is closed the problem that road exports by final solution.
By introducing special THz wave spatial filter and polytype terahertz wave modulator, build modular autonomous channel (wave band) terahertz wave signal charging assembly, and utilize the ingenious combination of associated component to realize the multi channel signals modulation of THz wave, and hyperchannel (wave band) THz wave that the most settling signal has loaded is exported by System Outlet after closing road.
Passage THz wave modulating system schematic diagram as shown in Figure 1, this system comprises: THz wave channel to channel adapter 1(T_a), THz wave passage combiner 2(C_a), terahertz wave modulator 3-1(M_a), terahertz wave modulator 3-2(M_b), THz wave collimating apparatus and switching device shifter 4 thereof, module package box 5-1, 5-2, 5-3(comprises system auxiliary equipment and circuit), integrated terahertz wave modulator 6(M_c) (list/multi-channel terahertz modulator), THz wave channel to channel adapter 7-1(T_b), THz wave passage combiner 7-2(C_b), and clutter absorption plant 8, THz wave channel to channel adapter 1 and terahertz wave modulator about 3-1 are placed in module package box 5-1, THz wave channel to channel adapter 7-1, integrated terahertz wave modulator 6, THz wave passage combiner 7-2 left, center, right are placed in module package box 5-2, terahertz wave modulator 3-2, THz wave passage combiner about 2 are placed in module package box 5-3, from bottom to up on the same axis, modules encapsulation box can conducting at this axis glazed thread for THz wave collimating apparatus and switching device shifter 4 thereof, THz wave channel to channel adapter 1, THz wave channel to channel adapter 7-1, terahertz wave modulator 3-2, terahertz wave modulator 3-1, THz wave passage combiner 7-2, THz wave passage combiner 2 are from bottom to up on the same axis, modules encapsulation box can conducting at this axis glazed thread, axis width mates with THz wave collimating apparatus, except two axial lines place, other parts of modules encapsulation box are light tight, in module package box 5-2 and 5-3, have clutter absorption plant 8.
Specific implementation method of the present invention is the THz wave exported from light source
f o after THz wave collimating apparatus 4, become collimated wave beam be imported in the modulation module of system.The passage (wave band) being realized the first order by THz wave channel to channel adapter 1 is separated, and will need the THz wave of the passage 1 of modulation
f 1 selective reflecting is to terahertz wave modulator 3-1.Then be not irradiated to THz wave channel to channel adapter 7-1 through THz wave channel to channel adapter 1 by the THz wave of its all band reflected.
THz wave channel to channel adapter 7-1 then carries out second level passage (wave band) mask work, by THz wave
f n reflex to THz wave passage combiner 7-2, not by other THz wave reflected
f r then arrive terahertz wave modulator 3-2 through THz wave channel to channel adapter 7-1.
Terahertz wave modulator 3-1,3-2, and integrated terahertz wave modulator 6 is respectively to THz wave
f 1 ,
f r , and
f n carry out separate modulation, thus load each passage modulation signal separately.
Modulated THz wave
f 1 ' with
f n ' carry out conjunction road by THz wave passage combiner 7-2 to export.And then through THz wave passage combiner 2 and modulated THz wave
f r ' carry out conjunction road to export.
And will be absorbed by clutter absorption plant 8 in the THz wave of closing spuious light in wave process or not being allowed to the wave band exported, to improve the signal to noise ratio (S/N ratio) of whole system.
Intrasystem each device:
Preferably, THz wave channel to channel adapter 1 is realized by the spatial filter based on metamaterial.Itself and THz wave
f 1 there is resonance coupling, and reflected.
Preferably, THz wave channel to channel adapter 7-1 is realized by the spatial filter based on metamaterial.Itself and THz wave
f n there is resonance coupling, and reflected.
Preferably, terahertz wave modulator 3-1,3-2 are realized by automatically controlled galvanometer.
Preferably, integrated terahertz wave modulator 6 is realized by the automatically controlled terahertz wave modulator of based semiconductor.The modulation of single channel THz wave can be realized by designing different metamaterial structures, or the modulation of multi-channel terahertz ripple.The quantity of its passage determines primarily of the cellular construction kind of metamaterial.When only having a kind of cellular construction, as chosen any one kind of them from Fig. 2, (black region indicates metal electrode, white portion represents general substrate material), carry out periodicity when launching, device belongs to single channel terahertz wave modulator, possesses the single channel terahertz wave modulator of some interlock wave bands in other words.And when optional two kinds of different units structures from similar units structure, and after rational deployment and line, then device can realize binary channels operation, (wherein bias electrode B as shown in Figure 3
1, B
2for Schottky electrode, connect forward bias modulator electrode, both independent operations; Electrode B
0for Ohmic electrode, ground wire).Multichannel words, by that analogy.
Preferably, THz wave passage combiner 7-2 is realized by the spatial filter based on metamaterial.Itself and modulated THz wave
f n ' there is resonance coupling, and reflected.Meanwhile, modulated THz wave is allowed
f 1 ' pass through, and finally realize THz wave
f 1 ' with
f n ' close the effect that road exports.
Preferably, THz wave passage combiner 2 is realized by the spatial filter based on metamaterial.Itself and modulated THz wave
f r ' there is resonance coupling, and reflected.Meanwhile, modulated THz wave is allowed
f 1 ' with
f n ' pass through smoothly, and finally realize THz wave
f 1 ' ,
f n ' and
f r ' deng the effect that the conjunction road of hyperchannel (wave band) exports.
Preferably, the encapsulation box that THz wave collimating apparatus and switching device shifter 4 thereof are equipped with roller by THz wave focus lens group and its is implemented.When needs collimated incident THz wave, systematic evaluation, to the mode of operation of band THz wave condenser lens, realizes by THz wave focus lens group effect incident light being become collimation directional light.As incident light collimates in previous light path, then system passes through the roller switching device shifter of 4 to the mode of operation without THz wave focus lens group.
Preferably, above affiliated significant element device mainly encapsulates by module package box 5, and provides the combined and spliced window between module and module and locking device.Meanwhile, in module package box 5, also lay the control circuit of each modulation device, to realize still can work independently when module splits.
Preferably, clutter absorption plant is implemented by the liquid absorbing material sealed.As being sealed in the pure water in sheet compression moulding compounds.Inhale wave apparatus and be placed in system that each needs to inhale the position of ripple, be not limited in Fig. 1 shownschematically position.When not influential system stability, encapsulation box inwall all can be superscribed related clutter absorption plant.
The maximum feature of the present invention is that each modulation module of system can combine mutually.After such as the module package box 5-2 entirety of Fig. 1 system being shifted out system, remaining part reconfigures and is turned into a binary channels THz wave modulating system, as shown in Figure 6, now, (
f r =
f 0 -
f 1 ).The module package box 5-2 be separated then can become separately a list based on integrated terahertz wave modulator/multi-channel terahertz modulation module, as shown in Figure 7, now,
f n ; namely THz wave is inputted
f 0 in the output signal of modulated wave band.
In addition, the present invention also has following two conveniences: A) add the module of class as module package box 5-1 between module package box 5-2 in Fig. 1 and module package box 5-3.The now terahertz wave modulator M_a of new module
'tHz wave passage combiner need be replaced by.While the relevant new tunnel (wave band) of interpolation, the THz wave passage combiner in a new module needs to select targetedly, relevant modulated each road terahertz wave signal is carried out perfection fusion to meet.System very simply realizes the increase of port number by mode stacked like this, to enrich the channel resource of system.
System also can on the basis in Fig. 1, by adding the modulation module (as modulation module 5-2) with integrated Terahertz modulator between modulation module 5-2 and modulation module 5-3, to continue the drivable channels number of extension system.Now integrated terahertz wave modulator M_c
'need by changing the control that original cellular construction type or physical dimension realize new wave band to be selected.This new system, because providing multiple integrated terahertz wave modulator, therefore possesses more passage control ability, thus can hold more Tunable Channels (wave band).
The prerequisite of native system work is that incident THz wave has to pass through collimation.Therefore, the incident THz wave after collimating via THz wave collimating apparatus and switching device shifter 4 thereof, through the by-passing of THz wave channel to channel adapter 1, by THz wave
f 1 reflex to terahertz wave modulator M_b, and allow its all band THz wave (
f r + f n ) pass through smoothly.
The THz wave of parallel incidence
f 1 by terahertz wave modulator 3-1 reflection modulation.Emergence angle is only had to meet the THz wave of special angle
f 1 just can arrive next stage by window smoothly.Be loaded with the terahertz wave modulator 3-1 of signal to THz wave
f 1 reflection angle control, thus realize obtaining relevant modulated THz wave
f 1 ' object.
And THz wave (
f r+ f n ) arrive THz wave channel to channel adapter 7-1 after, by it along separate routes, have the THz wave of resonance coupling with it
f n be reflected to integrated terahertz wave modulator M_c.And the THz wave of its all band
f r then pass through smoothly.
Integrated terahertz wave modulator 6 possesses single device multi-way contral function because of it, and therefore it can incide the THz wave on it
f n carry out subchannel signal loading by the mode of electric control operation, thus obtain and modulate
f n ' .It should be noted that this kind of integrated multi-channel modulation device needs the design carrying out channel separation aspect.(black region represents metal electrode as shown in Figures 3 and 4, white portion represents backing material), the wave band that the cellular construction of its two kinds of passages is modulated is separate (physical dimension determines its wave band controlled), and control electrode is also separate.The structure Dual_B of Fig. 4 with the addition of special broached-tooth design to limit the interference of clutter further on the basis of the structure Dual_A of Fig. 3.Fig. 5 is the CST simulation results figure of Fig. 4 dependency structure.Therefrom can find out, the effect of passage (wave band) separate modulation of the modulator of the integrated binary channels THz wave of our design can meet practical application request.
THz wave passage combiner 7-2 is by modulated THz wave
f n ' reflex to THz wave passage combiner 2, meanwhile, it allows modulated THz wave
f 1 ' pass through smoothly and arrive THz wave passage combiner 2, thus realizing THz wave
f 1 ' with
f n ' close the object that road exports.
Terahertz wave modulator 3-2 is by the THz wave of parallel incidence
f r reflection (
f r =
f 0 -
f 1 -
f n ).Only have reflection angle to meet the THz wave of special angle, just can arrive lower THz wave passage combiner 2 smoothly and be reflected system outlet by it.Be loaded with the terahertz wave modulator 3-2 of signal then to THz wave
f r reflection angle control, thus achieve the Terahertz wave modulation to this passage, to obtain and modulate
f r 'signal.
Finally, THz wave passage combiner 2 will have the modulated THz wave of resonance coupling with it
f r ' reflex to system outlet.Meanwhile, because it with the THz wave of its all band, coupling of resonating does not occur, thus allow modulated THz wave
f 1 ' with
f n ' pass through smoothly and arrive system outlet, finally realizing THz wave
f 1 ' ,
f n ' and
f r ' the output of conjunction road is carried out Deng hyperchannel (wave band).
Like this, THz wave
f 1 ,
f n and
f r just respectively by terahertz wave modulator 3-1,3-2, and 6 modulation and load signal after, and by THz wave wave multiplexer 2 and 7-2 carry out classification close ripple, synthesize modulated terahertz wave signal (
f 1 ' + f n ' + f r '), finally from system outlet outgoing.
More than show and describe ultimate principle of the present invention, principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and instructions just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (9)
1. a multi-channel terahertz ripple modulator approach, it is characterized in that, incident THz wave becomes collimated wave beam after THz wave collimating apparatus, several separate modulation channel modules that collimated wave beam enters superposition successively carry out separate modulation, each separate modulation channel module exports separate modulated signals, after each separate modulated signals exported closes road successively by the THz wave passage combiner in modulation channels module again, unified from System Outlet output, there is clutter absorption plant in the separate modulation channel module of band THz wave passage combiner.
2. the modulating system of multi-channel terahertz ripple modulator approach according to claim 1, it is characterized in that, comprise 3 the separate modulation channel modules and THz wave collimating apparatus that superpose successively, the first THz wave channel to channel adapter and the first terahertz wave modulator respectively left and right are placed in composition first separate modulation channel module in the first modulation channels module package box; Second THz wave channel to channel adapter, integrated terahertz wave modulator, the first THz wave passage combiner respectively left, center, right are placed in composition second separate modulation channel module in the second modulation channels module; Second terahertz wave modulator, the second THz wave passage combiner respectively left and right are placed in composition the 3rd separate modulation channel module in the 3rd modulation channels module; THz wave collimating apparatus, the first THz wave channel to channel adapter, the second THz wave channel to channel adapter, the second terahertz wave modulator are from bottom to up on the same axis; First terahertz wave modulator, the first THz wave passage combiner, the second THz wave passage combiner from bottom to up on the same axis, incident THz wave
f o after THz wave collimating apparatus, become collimated wave beam, the first THz wave channel to channel adapter that collimated wave beam inputs in first separate modulation channel module is separated, a branch of THz wave
f 1 selective reflecting is modulated to the first terahertz wave modulator
f 1 ' , another bundle is transmitted in second separate modulation channel module, is separated, a branch of THz wave through the second THz wave channel to channel adapter
f n reflection is modulated to through integrated terahertz wave modulator
f n ' , another bundle
f r be transmitted in the 3rd separate modulation channel module, be adjusted to through the second terahertz wave modulator
f r ' , THz wave after the modulation of first separate modulation channel module output
f 1 ' after the second separate modulation channel module modulation
f n ' , carry out conjunction road by the first THz wave passage combiner and output in the 3rd separate modulation channel module, then after being modulated by the second THz wave passage combiner and the 3rd separate modulation channel module
f r ' carry out conjunction road, unified to export from the 3rd separate modulation channel module delivery outlet, second and the 3rd also has clutter absorption plant in modulation channels module package box.
3. the modulating system of multi-channel terahertz ripple modulator approach according to claim 2, is characterized in that, described 3 separate modulation channel modules can select arbitrarily two to superpose to form system with THz wave collimating apparatus.
4. the modulating system of multi-channel terahertz ripple modulator approach according to claim 2, is characterized in that, described 3 separate modulation channel modules can select arbitrarily one separately and THz wave collimating apparatus form system.
5. according to the modulating system of multi-channel terahertz ripple modulator approach described in claim 2 to 4, it is characterized in that, described THz wave channel to channel adapter is the spatial filter based on metamaterial, with the corresponding THz wave that need modulate, coupling of resonating occurs.
6. according to the modulating system of multi-channel terahertz ripple modulator approach described in claim 2 to 4, it is characterized in that, described terahertz wave modulator is automatically controlled galvanometer.
7. according to the modulating system of multi-channel terahertz ripple modulator approach described in claim 2 to 4, it is characterized in that, described integrated terahertz wave modulator is the automatically controlled terahertz wave modulator of based semiconductor.
8. according to the modulating system of multi-channel terahertz ripple modulator approach described in claim 2 to 4, it is characterized in that, described THz wave passage combiner is the spatial filter based on metamaterial, with the corresponding THz wave that need modulate, coupling of resonating occurs.
9. according to the modulating system of multi-channel terahertz ripple modulator approach described in claim 2 to 4, it is characterized in that, described modulation channels module package box provides combined and spliced window between module and module and locking device, the control circuit of each modulation device is also laid, to realize still can work independently when module splits in modulation channels module package box.
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