CN108809427A - Based on the adjustable Terahertz wireless communication system of the phased wave beam of optics and communication means - Google Patents
Based on the adjustable Terahertz wireless communication system of the phased wave beam of optics and communication means Download PDFInfo
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- CN108809427A CN108809427A CN201810348705.0A CN201810348705A CN108809427A CN 108809427 A CN108809427 A CN 108809427A CN 201810348705 A CN201810348705 A CN 201810348705A CN 108809427 A CN108809427 A CN 108809427A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/25—Arrangements specific to fibre transmission
- H04B10/2575—Radio-over-fibre, e.g. radio frequency signal modulated onto an optical carrier
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/29—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the position or the direction of light beams, i.e. deflection
- G02F1/292—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the position or the direction of light beams, i.e. deflection by controlled diffraction or phased-array beam steering
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/50—Transmitters
- H04B10/501—Structural aspects
- H04B10/503—Laser transmitters
- H04B10/505—Laser transmitters using external modulation
- H04B10/5059—Laser transmitters using external modulation using a feed-forward signal generated by analysing the optical or electrical input
- H04B10/50597—Laser transmitters using external modulation using a feed-forward signal generated by analysing the optical or electrical input to control the phase of the modulating signal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/60—Receivers
- H04B10/61—Coherent receivers
- H04B10/616—Details of the electronic signal processing in coherent optical receivers
- H04B10/6163—Compensation of non-linear effects in the fiber optic link, e.g. self-phase modulation [SPM], cross-phase modulation [XPM], four wave mixing [FWM]
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- Nonlinear Science (AREA)
- Optics & Photonics (AREA)
- General Physics & Mathematics (AREA)
- Optical Communication System (AREA)
- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
An embodiment of the present invention provides a kind of adjustable Terahertz wireless communication systems of wave beam phased based on optics and method, wherein system to include：Optical branching device, light phase shift component, N number of polarization-maintaining photo-coupler, N number of optical mixer unit and N number of antenna element；Method includes：Optical branching device receives light modulating signal, is the roads N light modulating signal by light modulating signal branch；Light phase shift component is to the light modulating signal after branch into horizontal phasing control；N number of polarization-maintaining photo-coupler correspond to will be phase adjusted after light modulating signal coupled with reference optical signal；N number of optical mixer unit corresponds to the modulated signal for converting optical signals to Terahertz frequency range；N number of antenna element corresponds to the modulated signal for receiving and emitting Terahertz frequency range.The adjustable Terahertz wireless communication system of the wave beam phased based on optics of the embodiment of the present invention, can reduce the loss for the signal for being transmitted to antenna, additionally it is possible to support change data communication rates.
Description
Technical field
The present invention relates to wireless communication technology fields, more particularly to a kind of adjustable Terahertz of the wave beam phased based on optics
Wireless communication system and communication means.
Background technology
With the maturation of 4G mobile communication technologies and the continuous development of mobile communication system, low-frequency range frequency spectrum resource is further tight
It lacks, existing communications band and technology are increasingly difficult to meet growing business demand.And in Terahertz frequency range, at present still
So there is a large amount of idle frequency spectrum resource, these frequency spectrum resources to provide the wireless of tens of Gigabits or even gigabit up to a hundred
Traffic rate service is possibly realized.
THz waves (THz wave) refer to comprising the electromagnetic wave that frequency is 0.1~10THz.Terahertz frequency range is generally configured with number
The available bandwidth of ten GHz, it means that the superelevation transmission rate of tens of to up to a hundred gigabits can be provided, THz waves can be utilized
The characteristics of, manufacture the wireless communication system based on THz waves.
For Terahertz communication system, the path loss of high-frequency electromagnetic wave in free space is larger, in order to overcome
Larger path loss generally requires high-gain aerial, and high-gain aerial will cause wave beam to become very narrow.Extremely narrow wave beam
So that the alignment between transmitter and receiver becomes difficult, therefore, practical Terahertz communication system must have wave beam and sweep
Retouch ability.Can be poor by adjusting the current feed phase between antenna, change beam direction, to realize beam scanning.
In current Terahertz communication system, generally use electronic phase shifter is adjusted the current feed phase of antenna.But
It is that electronic phase shifter need to be arranged after the optical mixer unit of system, before antenna, and optical mixer unit is typically based on photodiode system
It makes, loss is very big when opto-electronic conversion, adds the loss of electronic phase shifter so that be transmitted to the loss of signal bigger of antenna.
Invention content
The embodiment of the present invention is designed to provide a kind of wave beam phased based on optics adjustable Terahertz wireless communication system
System and communication means reduce the loss for the signal for being transmitted to antenna to realize in Terahertz communication system.Specific technical solution is such as
Under：
In a first aspect, an embodiment of the present invention provides a kind of wave beam phased based on optics adjustable Terahertz wireless communication systems
System, the system comprises：Optical branching device, light phase shift component, N number of polarization-maintaining photo-coupler, N number of optical mixer unit and N number of antenna element；
The N is the integer more than 1；
The optical branching device is believed for receiving light modulating signal, and by the light modulating signal branch for the light modulation of the roads N
Number；
The smooth phase shift component carries out phase for receiving the roads N light modulating signal, and to the light modulating signal after branch
Adjustment；
N number of polarization-maintaining photo-coupler, for light modulating signal of the corresponding roads reception N after phase adjusted, and will be described
Light modulating signal after phase adjusted is coupled with reference optical signal；
N number of optical mixer unit for optical signal of the corresponding roads reception N after coupled, and the optical signal is converted to
The modulated signal of Terahertz frequency range；
N number of antenna element receives the modulated signal of the Terahertz frequency range for corresponding, and emits the Terahertz
The modulated signal of frequency range.
Optionally, the smooth phase shift component includes N number of optical phase shifter, and N number of optical phase shifter receives the roads N light for corresponding
Modulated signal, and to corresponding line light modulating signal into horizontal phasing control.
Optionally, the light modulating signal is to be multiplexed the modulation transmitted in an optical fiber through optical combiner or optical multiplexer
Signal.
Optionally, described device further includes：Phase control module is input to the smooth phase shift group for that will control signal
Part controls N number of optical phase shifter in the smooth phase shift component.
Optionally, the phase control module is specifically used for：By open loop control mode or close-loop control mode, will control
Signal processed is input to the smooth phase shift component, controls N number of optical phase shifter in the smooth phase shift component.
Second aspect, an embodiment of the present invention provides a kind of adjustable Terahertz side wireless communications of wave beam phased based on optics
Method, the method includes：
Optical branching device receives light modulating signal, and is the roads N light modulating signal by the light modulating signal branch；
Light phase shift component receives N roads light modulating signal, and to the light modulating signal after branch into horizontal phasing control；
Light modulating signal after N number of roads polarization-maintaining photo-coupler correspondence reception N are phase adjusted, and will be described phase adjusted
Light modulating signal afterwards is coupled with reference optical signal；
Optical signal after N number of roads optical mixer unit correspondence reception N are coupled, and the optical signal is converted into Terahertz frequency range
Modulated signal；
N number of antenna element corresponds to the modulated signal for receiving the Terahertz frequency range, and emits the tune of the Terahertz frequency range
Signal processed, the N are the integer more than 1.
Optionally, the smooth phase shift component includes N number of optical phase shifter, and the smooth phase shift component receives the roads N light modulating signal,
And the light modulating signal after branch is specifically included into horizontal phasing control：
N number of optical phase shifter in the smooth phase shift component, which corresponds to, receives the roads N light modulating signal, and to corresponding line light modulation
Signal is into horizontal phasing control.
Optionally, the light modulating signal is to be multiplexed the modulation transmitted in an optical fiber through optical combiner or optical multiplexer
Signal.
Optionally, the smooth phase shift component receives the roads N light modulating signal, and carries out phase to the light modulating signal after branch
Before the adjustment of position, the method further includes：
Phase control module is input to the smooth phase shift component by signal is controlled, to N number of light in the smooth phase shift component
Phase shifter is controlled.
Optionally, the phase control module is input to the smooth phase shift component by signal is controlled, to the smooth phase shift group
N number of optical phase shifter in part is controlled, and is specifically included：
Control signal is input to described by the phase control module by open loop control mode or close-loop control mode
Light phase shift component controls N number of optical phase shifter in the smooth phase shift component.
A kind of wave beam phased based on optics provided in an embodiment of the present invention is adjustable Terahertz wireless communication system and communication
The light modulating signal branch of multiplexing is multichannel light modulating signal by method, optical branching device, and light phase shift component is laid in each road light
Before frequency mixer, to before optical mixer unit converts optical signals to the modulated signal of Terahertz frequency range, believe light
Number phase be adjusted, after converting optical signals to the modulated signal of Terahertz frequency range in optical mixer unit, to terahertz
Hereby the phase of the modulated signal of frequency range is adjusted, to avoid electronic phase shifter damage caused by electric signal in phase adjustment
Consumption, and then reduce the loss for the signal for being transmitted to antenna.Certainly, it implements any of the products of the present invention or method must be not necessarily required to
Reach all the above advantage simultaneously.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
Obtain other attached drawings according to these attached drawings.
Fig. 1 is one kind of the adjustable Terahertz wireless communication system of the wave beam phased based on optics provided in an embodiment of the present invention
Structural schematic diagram；
Fig. 2 is one kind of the adjustable Terahertz wireless communication system of the wave beam phased based on optics provided in an embodiment of the present invention
Structural schematic diagram；
Fig. 3 is one kind of the adjustable Terahertz wireless communications method of the wave beam phased based on optics provided in an embodiment of the present invention
Flow diagram.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
For the higher Terahertz frequency range of frequency, has the available bandwidth of bigger.It is super in order to generate under Terahertz frequency
The signal of high speed, one of the way of mainstream, is to generate high rate optical using the modulation system of ripe fiber optic communication first at present
Then optical signal is changed into THz wave by special photodiode and launched by signal.But due to THz wave
Free space path loss bigger, to reach higher gain, wave beam can be narrower, therefore practical Terahertz communication system must
So require its wave beam adjustable.This requires systems to control the current feed phase of each antenna element.
In current Terahertz wireless communication system, beam scanning is generally realized by phased array antenna.For linear phase
Battle array is controlled, the current feed phase difference Δ φ and antenna array between each adjacent antenna units exist between being formed by the direction θ of wave beam
Following relationship：
Wherein, d is antenna element spacing, and λ is wavelength.It can be seen that by adjusting the current feed phase difference Δ between antenna
φ can change beam direction, realize beam scanning.And the current feed phase of each antenna element can be by believing in base-band digital
Given mode controls when number processing, can also be controlled by radio frequency analog phase shifter.
An embodiment of the present invention provides a kind of adjustable Terahertz wireless communication system of wave beam phased based on optics, such as Fig. 1
It is shown, including optical branching device 1, light phase shift component 2, N number of polarization-maintaining photo-coupler 3, N number of optical mixer unit 4 and N number of antenna element 5.Its
In, N is the integer more than 1.
Optical branching device 1 is the roads N light modulating signal for receiving light modulating signal, and by light modulating signal branch,.One
In kind specific embodiment, above-mentioned light modulating signal can be that be passed in an optical fiber through optical combiner or optical multiplexer multiplexing
Defeated modulated signal.
Light phase shift component 2 carries out phase tune for receiving the roads N light modulating signal, and to the light modulating signal after branch
It is whole.Wherein, the wavelength of the above-mentioned roads N light modulating signal can be identical.
As a kind of specific embodiment of the embodiment of the present invention, light phase shift component 2 may include N number of optical phase shifter 6, N
A optical phase shifter 6 receives the roads N light modulating signal for corresponding, and to corresponding line light modulating signal into horizontal phasing control.This hair
In bright embodiment, light phase shift component 2 can pass through existing thermal tuning optical phase shifter or other kinds of optical phase shifter part structure
At, wherein optical phase shifter 6 may include a true time delay circuit, therefore above-mentioned smooth phase shift component 2 may be considered by multiple true
The light phase-shift network of time delay circuit composition.
N number of polarization-maintaining photo-coupler 3, light modulation of each polarization-maintaining photo-coupler 3 for the corresponding roads reception N after phase adjusted
Signal, and will be phase adjusted after light modulating signal coupled with reference optical signal, the terahertz to be intentionally got
Hereby frequency.
N number of optical mixer unit 4, each optical mixer unit 4 for it is corresponding receive the roads N it is coupled after optical signal, and by optical signal
Be converted to the modulated signal of Terahertz frequency range.Optical mixer unit 4 is specifically as follows UTC-PD (Uni-Traveling-Carrier
Photodiode, Unidirection Carrier Photodiode).
N number of antenna element 5, each antenna element 5 receives the modulated signal of Terahertz frequency range for corresponding, and emits terahertz
The hereby modulated signal of frequency range.
As a kind of specific embodiment of the embodiment of the present invention, as shown in Fig. 2, above system can also include phase control
Molding block 7 is input to light phase shift component for that will control signal, controls N number of optical phase shifter in light phase shift component.Phase
Position control module 7 can by programmable controller it is programmed after obtain, for example, DSP (digital singnal
Processor, digital signal processor) or FPGA (Field Programmable Gate Array field-programmable gate arrays
Row) it obtains.
Optionally, phase control module 7 can control the phase of each optical phase shifter by open loop control mode, to refer to
The beam direction of fixed each transmitter unit；It can also be by close-loop control mode, according to the feedback informations such as such as direction of arrival, control
The phase of each N number of optical phase shifter is made, to specify the beam direction of each transmitter unit.
The adjustable Terahertz wireless communication system of a kind of wave beam phased based on optics provided in an embodiment of the present invention, splitter
It is multichannel light modulating signal by the light modulating signal branch of multiplexing, the light phase shift component comprising multiple optical phase shifters is laid in respectively
Before the optical mixer unit of road, thus before optical mixer unit converts optical signals to the modulated signal of Terahertz frequency range, it can be right
The phase of optical signal is adjusted, right after converting optical signals to the modulated signal of Terahertz frequency range in optical mixer unit
The phase of the modulated signal of Terahertz frequency range is adjusted, to avoid electronic phase shifter from being caused to electric signal in phase adjustment
Loss, and then reduce be transmitted to antenna signal loss.Also, it solves and how to be controlled in Terahertz wireless communication system
The phase of high-speed wideband signal processed, and then the adjustable function of wave beam is provided, it is wirelessly connected convenient for establishing and maintaining.Compared to current
Electric phase-shift mode, advantage is：1, the bandwidth of operation bigger of photoelectricity phase shifter, can support more high data rate；2, make
The light phase shift component for being electrically integrated circuit engineering development is used up, there is small, low in energy consumption, electromagnetism interference the advantage of size.
The embodiment of the present invention additionally provides a kind of adjustable Terahertz wireless communications method of the wave beam phased based on optics, such as schemes
Shown in 3, including：
S201, optical branching device receive light modulating signal, and are the roads N light modulating signal by light modulating signal branch.
The light modulating signal that above-mentioned optical branching device receives, can be the modulated signal of optically modulated device, for example, believing light
Number intensity, refractive index, the signal after absorptivity or amplitude modulation, it is possible to further for through optical combiner or optical multiplexer
It is multiplexed the modulated signal transmitted in an optical fiber.Specifically, the light modulating signal branch received can be N by optical branching device
Road light modulating signal.
S202, light phase shift component receives the roads N light modulating signal, and carries out phase tune to the light modulating signal after branch
It is whole.
Light phase shift component can be adjusted the phase of received optical signal, so as to adjust the beam direction of signal.
As a kind of specific embodiment of the embodiment of the present invention, light phase shift component 2 may include N number of optical phase shifter 6, N
A optical phase shifter 6, which can correspond to, receives N roads light modulating signal, and to corresponding line light modulating signal into horizontal phasing control.This hair
In bright embodiment, light phase shift component 2 can be made up of existing thermo-optic phase shifter or other kinds of optical phase shifter part.Light
Signal can be inputted from the input terminal of each optical phase shifter, after phase adjusted, then from the output end of each phase shifter export.
As a kind of optional embodiment of the embodiment of the present invention, in light phase shift component to the light modulating signal after branch
Into before horizontal phasing control, it can also be input to light phase shift component by signal is controlled by phase control module, to light phase shift group
N number of optical phase shifter in part is controlled.
Optionally, phase control module 7 can control the phase of each N number of optical phase shifter by open loop control mode, to
Specify the beam direction of each transmitter unit；Can also by close-loop control mode, according to feedback informations such as such as direction of arrival,
The phase of each N number of optical phase shifter is controlled, to specify the beam direction of each transmitter unit.
S203, the light modulating signal after N number of roads polarization-maintaining photo-coupler correspondence reception N are phase adjusted, and will be through phase tune
Light modulating signal after whole is coupled with reference optical signal.
Light modulating signal can be coupled with reference to optical carrier by polarization-maintaining photo-coupler, to be wished
Obtained Terahertz frequency.
S204, the optical signal after N number of roads optical mixer unit correspondence reception N are coupled, and convert optical signals to Terahertz frequency
The modulated signal of section.
In the embodiment of the present invention, the optical carrier after each optical mixer unit can couple every road is converted to Terahertz frequency
The single-carrier modulated signal of section, optical mixer unit for example can be：UTC-PD.
S205, N number of antenna element correspond to the modulated signal for receiving Terahertz frequency range, and emit the modulation letter of Terahertz frequency range
Number.
In the embodiment of the present invention, each antenna element the single-carrier modulated signal of every road Terahertz frequency range can be emitted to
Free space.
After antenna element emits the single-carrier modulated signal of Terahertz frequency range, the letter can be received by existing receiver
Number, and handle the signal by devices such as low noise amplifier, low-converter, digital signal processing chips in receiver.
The adjustable Terahertz wireless communications method of a kind of wave beam phased based on optics provided in an embodiment of the present invention, splitter
It is multichannel light modulating signal by the light modulating signal branch of multiplexing, light phase shift component carries out phase to the light modulating signal after branch
Position adjustment, thus before optical mixer unit converts optical signals to the modulated signal of Terahertz frequency range, it can be to optical signal
Phase is adjusted, after converting optical signals to the modulated signal of Terahertz frequency range in optical mixer unit, to Terahertz frequency
The phase of the modulated signal of section is adjusted, to avoid electronic phase shifter loss caused by electric signal in phase adjustment,
And then reduce the loss for the signal for being transmitted to antenna.
It should be noted that herein, the terms "include", "comprise" or its any other variant are intended to non-row
His property includes, so that the process, method, article or equipment including a series of elements includes not only those elements, and
And further include other elements that are not explicitly listed, or further include for this process, method, article or equipment institute it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including institute
State in the process, method, article or equipment of element that there is also other identical elements.
Each embodiment in this specification is all made of relevant mode and describes, identical similar portion between each embodiment
Point just to refer each other, and each embodiment focuses on the differences from other embodiments.Especially for system reality
For applying example, since it is substantially similar to the method embodiment, so description is fairly simple, related place is referring to embodiment of the method
Part explanation.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the scope of the present invention.It is all
Any modification, equivalent replacement, improvement and so within the spirit and principles in the present invention, are all contained in protection scope of the present invention
It is interior.
Claims (8)
1. a kind of adjustable Terahertz wireless communication system of the wave beam phased based on optics, which is characterized in that the system comprises：Light
Splitter, light phase shift component, N number of polarization-maintaining photo-coupler, N number of optical mixer unit and N number of antenna element；The N is whole more than 1
Number；
The optical branching device is the roads N light modulating signal for receiving light modulating signal, and by the light modulating signal branch；
The smooth phase shift component carries out phase tune for receiving the roads N light modulating signal, and to the light modulating signal after branch
It is whole；
N number of polarization-maintaining photo-coupler, for light modulating signal of the corresponding roads reception N after phase adjusted, and by described through phase
Light modulating signal after the adjustment of position is coupled with reference optical signal；
The optical signal for optical signal of the corresponding roads reception N after coupled, and is converted to terahertz by N number of optical mixer unit
The hereby modulated signal of frequency range；
N number of antenna element receives the modulated signal of the Terahertz frequency range for corresponding, and emits the Terahertz frequency range
Modulated signal.
2. the apparatus according to claim 1, which is characterized in that the smooth phase shift component includes N number of optical phase shifter, the N
A optical phase shifter receives the roads N light modulating signal for corresponding, and to corresponding line light modulating signal into horizontal phasing control.
3. the apparatus of claim 2, which is characterized in that described device further includes：Phase control module, for that will control
Signal processed is input to the smooth phase shift component, controls N number of optical phase shifter in the smooth phase shift component.
4. device according to claim 3, which is characterized in that the phase control module is specifically used for：Pass through open loop control
Control signal is input to the smooth phase shift component, to N number of in the smooth phase shift component by mode processed or close-loop control mode
Optical phase shifter is controlled.
5. a kind of adjustable Terahertz wireless communications method of the wave beam phased based on optics, which is characterized in that the method includes：
Optical branching device receives light modulating signal, and is the roads N light modulating signal by the light modulating signal branch；
Light phase shift component receives N roads light modulating signal, and to the light modulating signal after branch into horizontal phasing control；
N number of polarization-maintaining photo-coupler correspond to receive the roads N it is phase adjusted after light modulating signal, and by it is described it is phase adjusted after
Light modulating signal is coupled with reference optical signal；
N number of optical mixer unit correspond to receive the roads N it is coupled after optical signal, and the optical signal is converted to the tune of Terahertz frequency range
Signal processed；
N number of antenna element corresponds to the modulated signal for receiving the Terahertz frequency range, and emits the modulation letter of the Terahertz frequency range
Number, the N is the integer more than 1.
6. according to the method described in claim 5, it is characterized in that, the smooth phase shift component includes N number of optical phase shifter, the light
Phase shift component receives the roads N light modulating signal, and is specifically included into horizontal phasing control to the light modulating signal after branch：
N number of optical phase shifter in the smooth phase shift component, which corresponds to, receives the roads N light modulating signal, and to corresponding line light modulating signal
Into horizontal phasing control.
7. according to the method described in claim 6, it is characterized in that, the smooth phase shift component receives the roads N light modulating signal, and it is right
Into before horizontal phasing control, the method further includes for light modulating signal after branch：
Phase control module is input to the smooth phase shift component by signal is controlled, to N number of smooth phase shift in the smooth phase shift component
Device is controlled.
8. the method according to the description of claim 7 is characterized in that the phase control module will control signal be input to it is described
Light phase shift component controls N number of optical phase shifter in the smooth phase shift component, specifically includes：
The phase control module is input to the light phase by open loop control mode or close-loop control mode, by control signal
Component is moved, N number of optical phase shifter in the smooth phase shift component is controlled.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109495212A (en) * | 2018-11-22 | 2019-03-19 | 中国工程物理研究院电子工程研究所 | A kind of Terahertz wireless transmitter for blackout range high-speed radiocommunication |
| CN110650525A (en) * | 2019-08-12 | 2020-01-03 | 浙江工业大学 | Multi-beam distributed power MAC protocol communication method |
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| CN110650525A (en) * | 2019-08-12 | 2020-01-03 | 浙江工业大学 | Multi-beam distributed power MAC protocol communication method |
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