CN105827330B - The production method and system of a kind of millimeter wave - Google Patents
The production method and system of a kind of millimeter wave Download PDFInfo
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- CN105827330B CN105827330B CN201610367547.4A CN201610367547A CN105827330B CN 105827330 B CN105827330 B CN 105827330B CN 201610367547 A CN201610367547 A CN 201610367547A CN 105827330 B CN105827330 B CN 105827330B
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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
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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
- H04B10/516—Details of coding or modulation
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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
- H04B10/80—Optical aspects relating to the use of optical transmission for specific applications, not provided for in groups H04B10/03 - H04B10/70, e.g. optical power feeding or optical transmission through water
- H04B10/806—Arrangements for feeding power
- H04B10/808—Electrical power feeding of an optical transmission system
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Abstract
This application provides the production method and system of a kind of millimeter wave, this method includes：Driving is on LiNb MZM1 and LiNb MZM2 after using electric amplifier, local oscillation signal is amplified；Laser injection LiNb MZM1, the LiNb MZM1 light carriers exported are divided into two paths, wherein, one paths injection LiNb MZM2, after another paths are filtered, the path of multiplexing and demultiplexing processing and base band data modulation treatment is divided to couple with traveling wave of going forward side by side after LiNb MZM2 modulation, the optical signal for obtaining coupling using photodetector carries out two millimeter waves that beat frequency acquisition meets predeterminated frequency.This method increases Dare modulator using cascade connection type lithium niobate Mach and generates relevant light carrier, the bias point of modulator is arranged at maximum transmitted point, it powers so not needing to bias DC voltage source to modulator, simplify system structure, in the case where system complexity is relatively low, larger frequency is obtained, and generates two millimeter waves simultaneously, reduces system cost.
Description
Technical field
This application involves field of communication technology more particularly to the production methods and system of a kind of millimeter wave.
Background technology
With the explosive growth of communication service in communication system, low-frequency range very congestion, hyper band, i.e. millimeter
Message capacity of the wave wave band (tens GHz to the frequency range of hundreds of GHz) due to being capable of providing the faster rate of information throughput and bigger
And more concerns are obtained.
At present, in light carrier radio communication system, the phase at many identical frequency intervals is generally generated using external modulator
Dry light carrier, two light carriers then needed using wavelength-selective switches selection, a paths use intensity modulators modulate
Two, be then combined and be transmitted, finally clapped using photodetector by base band data a, paths not modulation data again
Frequency obtains a millimeter wave.
However, the method used at present, some in order to obtain the very big relevant light carrier of frequency and considerably increase and be
The complexity of system so that system is excessively heavy and cost can also increase, and the Mach of some systems, which increases Dare modulator needs, to be made
Modulator is powered with more DC offset voltage, and the voltage of bias DC voltage source is controlled in no complicated voltage
Larger voltage drift is had in the case of circuit, the generation of light carrier can be adversely affected.
Invention content
In view of this, this application provides the production method and system of a kind of millimeter wave, to overcome system in the prior art
Complexity is too greatly and since the voltage drift of bias DC voltage source is so as to ask what the generation of light carrier adversely affected
Topic.
To achieve these goals, this application provides following technical schemes：
A kind of production method of millimeter wave, this method include：
Using electric amplifier by local oscillation signal enhanced processing, amplified signal is obtained；
By the amplified signal, driving increases Dare modulator in the first lithium niobate Mach after electric splitter divides work(to handle
LiNb-MZM1 and the second lithium niobate Mach increase on Dare modulator LiNb-MZM2；Wherein, the LiNb-MZM1 and described
The bias point of LiNb-MZM2 is arranged at maximum transmitted point；
After laser is injected the LiNb-MZM1 using laser, the LiNb-MZM1 is exported using light splitter
Light carrier is divided into two paths, wherein, a paths inject the LiNb-MZM2, and another paths carry out wavelength-division multiplex and demultiplex
After processing and base band data modulation treatment, and after LiNb-MZM2 modulation and the path coupling that is filtered
It closes, obtains the optical signal for meeting preset condition；
The optical signal for meeting preset condition is subjected to beat frequency using photodetector and meets predeterminated frequency to obtain
Two millimeter waves.
Preferably, another paths be filtered including：
Another paths are filtered using light Rectangular Band-pass Filter, to obtain+2 rank light carriers.
Preferably, the traveling wave of going forward side by side after LiNb-MZM2 modulation divides multiplexing and demultiplexing processing and base band number
Include according to the method that the path of modulation treatment is specifically filtered：
± 4 rank light carriers of the LiNb-MZM2 output terminals are filtered out using Wave division multiplexer/demultiplexer；
Base band data is modulated on -4 rank light carriers using light intensity modulator；
Modulated -4 rank light carrier is coupled with+4 rank light carrier.
Preferably, it is described that the optical signal for meeting preset condition is subjected to beat frequency to be met using photodetector
The millimeter wave of predeterminated frequency includes：
The optical signal for meeting preset condition is carried out heterodyne beat processing by the optical detector, obtains the electricity after beat frequency
Signal；
Electric bandpass filter by after the beat frequency electric signal carry out bandpass filtering treatment, obtain it is filtered meet it is default
Two millimeter waves of frequency.
Preferably, it further includes：Quality testing is carried out to the millimeter wave using electric Amplitude Demodulators and bit error rate survey meter.
A kind of generation system of millimeter wave, the system include：
Signal amplifying apparatus, for by local oscillation signal enhanced processing, obtaining amplified signal using electric amplifier；
Divide work(device, for being driven the amplified signal in the first lithium niobate Mach after electric splitter divides work(to handle
Increase Dare modulator LiNb-MZM1 and the second lithium niobate Mach increases on Dare modulator LiNb-MZM2；Wherein, the LiNb-
The bias point of MZM1 and the LiNb-MZM2 are arranged at maximum transmitted point；
Processing unit, after laser is injected the LiNb-MZM1 using laser, using light splitter by described in
The light carrier of LiNb-MZM1 outputs is divided into two paths, wherein, a paths inject the LiNb-MZM2, another paths into
After row filtering process, divide multiplexing and demultiplexing processing and base band data tune with traveling wave of going forward side by side after LiNb-MZM2 modulation
The path coupling of system processing, obtains the optical signal for meeting preset condition；
Acquisition device, for being accorded with the optical signal progress beat frequency for meeting preset condition using photodetector
Close two millimeter waves of predeterminated frequency.
Preferably, the processing unit includes：Light Rectangular Band-pass Filter, for being filtered place to another paths
Reason, to obtain+2 rank light carriers.
Preferably, the processing unit includes：
Wave division multiplexer/demultiplexer, for filtering out ± 4 rank light carriers of the LiNb-MZM2 output terminals；
Light intensity modulator, for base band data to be modulated to -4 rank light carriers；
First photo-coupler, for modulated -4 rank light carrier to be coupled with+4 rank light carrier.
Preferably, the acquisition device includes：
The optical detector for the optical signal for meeting preset condition to be carried out heterodyne beat processing, obtains beat frequency
Electric signal afterwards；
Electric bandpass filter for the electric signal after the beat frequency to be carried out bandpass filtering treatment, obtains filtered symbol
Close two millimeter waves of predeterminated frequency.
Preferably, the acquisition device further includes：Quality detection device, for being visited using electric Amplitude Demodulators and the bit error rate
It surveys instrument and quality testing is carried out to the millimeter wave.
By above technical scheme it is found that this application provides a kind of millimeter wave production method and system, this method includes：
Using electric amplifier by local oscillation signal enhanced processing, amplified signal is obtained；The amplified signal is divided by electric splitter at work(
Driving increases Dare modulator LiNb-MZM1 in the first lithium niobate Mach after reason and the second lithium niobate Mach increases Dare modulator
On LiNb-MZM2；It is using light splitter that the LiNb-MZM1 is defeated after laser is injected the LiNb-MZM1 using laser
The light carrier gone out is divided into two paths, wherein, a paths inject the LiNb-MZM2, and another paths are filtered
Afterwards, the road of multiplexing and demultiplexing processing and base band data modulation treatment is divided with traveling wave of going forward side by side after LiNb-MZM2 modulation
Diameter couples, and obtains the optical signal for meeting preset condition；The optical signal for meeting preset condition is carried out using photodetector
Beat frequency meets two millimeter waves of predeterminated frequency to obtain.This method increases Dare modulator using cascade connection type lithium niobate Mach and generates
Relevant light carrier, the bias point of modulator are arranged at maximum transmitted point, i.e., the difference of two DC offset voltages is 0V, so
It does not need to bias DC voltage source to be powered modulator, simplifies system structure, and avoid the introducing of voltage drift, this
Outside, it is reduced in system complexity than in the case of relatively low, obtaining larger frequency, and two millimeter waves can be generated simultaneously
System cost.
Description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, 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
The embodiment of invention, for those of ordinary skill in the art, without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is the flow chart of the production method of a kind of millimeter wave that the embodiment of the present application one provides；
Fig. 2 is the flow chart of the production method of a kind of millimeter wave that the embodiment of the present application two provides；
The method flow diagram being filtered after a kind of modulation that Fig. 3 is provided for the embodiment of the present application two；
Fig. 4 is the structure diagram of the generation system of a kind of millimeter wave that the embodiment of the present application three provides；
Fig. 5 is the structure diagram of the generation system of a kind of millimeter wave that the embodiment of the present application four provides；
Fig. 6 is the structure chart of the generation system of a kind of millimeter wave that the embodiment of the present application five provides；
Fig. 7 is the light carrier schematic diagram during a kind of millimeter wave that the embodiment of the present application five provides generates；
Fig. 8 is the eye pattern of 45GHz millimeter waves that the embodiment of the present application five provides；
Fig. 9 is the eye pattern of 60GHz millimeter waves that the embodiment of the present application five provides；
Figure 10 is the error rate analyzer schematic diagram that the embodiment of the present application five provides.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without making creative work
Embodiment shall fall within the protection scope of the present invention.
To overcome system complexity in the prior art too big and voltage drift due to bias DC voltage source is so as to right
Leading to the problem of for light carrier adversely affects, this application provides the production method and system of a kind of millimeter wave, specific side
Case is as described below：
Embodiment one
The embodiment of the present application one provides a kind of production method of millimeter wave, and as shown in FIG. 1, FIG. 1 is the embodiment of the present application
A kind of flow chart of the production method of one millimeter wave provided.This method includes：
S101：Using electric amplifier by local oscillation signal enhanced processing, amplified signal is obtained；
In this application, the type of electric amplifier can be selected as needed, and the application is not construed as limiting；Local oscillation signal
Local oscillator can be utilized to generate, do not limited specifically.
S102：Amplified signal is driven after electric splitter divides work(to handle on LiNb-MZM1 and LiNb-MZM2；
Wherein, the bias point of LiNb-MZM1 and LiNb-MZM2 is arranged at maximum transmitted point；
Specifically, in this application, two electric phase shifters may be used by the inclined of LiNb-MZM1 and LiNb-MZM2
It puts and is a little arranged on maximum transmitted point, i.e., the difference of two DC offset voltages is 0V.
S103：The light that after laser injection LiNb-MZM1, will be exported LiNb-MZM1 using light splitter using laser
Carrier wave is divided into two paths, wherein, paths injection LiNb-MZM2, after another paths are filtered, with process
Traveling wave of going forward side by side after LiNb-MZM2 modulation divides multiplexing and demultiplexing processing and the path coupling of base band data modulation treatment, is accorded with
Close the optical signal of preset condition；
Specifically, light splitter used in this application is light splitter of point work(than 0.1, the light of LiNb-MZM1 outputs
Carrier wave is divided into two-way using the power splitter, wherein, the power for inputting that road signal of LiNb-MZM2 accounts for LiNb-MZM1 output letters
The 90% of number power, another way power accounts for 10%.
S104：The optical signal for meeting preset condition progress beat frequency is met into predeterminated frequency to obtain using photodetector
Two millimeter waves.
In this application, it can select single mode optical fiber that will meet preset condition using single mode optical fiber as transmitting device
Optical signal transmission is to photodetector.Since single mode optical fiber only transmits a pattern, and without intermode dispersion, Mo Neise is only existed
It dissipates, therefore its dispersion is small, transmission broadband is big, attenuation is small, suitable for large capacity long haul communication.
Finally, the optical signal for meeting preset condition progress beat frequency is met into predeterminated frequency so as to obtain using photodetector
Two millimeter waves.
By above technical scheme it is found that the production method for the millimeter wave that the embodiment of the present application one provides, uses cascade connection type
Lithium niobate Mach increases Dare modulator and generates relevant light carrier, and the bias point of modulator is arranged at maximum transmitted point, i.e., two
The difference of DC offset voltage is 0V, and modulator is powered so not needing to bias DC voltage source, simplifies system knot
Structure, and avoid the introducing of voltage drift, in addition, in system complexity than in the case of relatively low, obtaining larger frequency,
Since light device is sufficiently expensive, the application can generate two millimeter waves simultaneously, and this directly reduces costs.
Embodiment two
On the basis of embodiment one, the embodiment of the present application two provides the production method of another millimeter wave, such as Fig. 2 institutes
Show, Fig. 2 is the flow chart of the production method of a kind of millimeter wave that the embodiment of the present application two provides.This method includes：
S101：Using electric amplifier by local oscillation signal enhanced processing, amplified signal is obtained；
In this application, the type of electric amplifier can be selected as needed, and the application is not construed as limiting；Local oscillation signal
Local oscillator can be utilized to generate, do not limited specifically.
S102：Amplified signal is driven after electric splitter divides work(to handle on LiNb-MZM1 and LiNb-MZM2；
Wherein, the bias point of LiNb-MZM1 and LiNb-MZM2 is arranged at maximum transmitted point；
Specifically, in this application, two electric phase shifters may be used by the inclined of LiNb-MZM1 and LiNb-MZM2
It puts voltage and is disposed as 0, so as to which the bias point of modulator is arranged on maximum transmitted point, that is, ensure two DC offset voltages
Difference be 0V.
S103：The light that after laser injection LiNb-MZM1, will be exported LiNb-MZM1 using light splitter using laser
Carrier wave is divided into two paths, wherein, paths injection LiNb-MZM2, after another paths are filtered, with process
Traveling wave of going forward side by side after LiNb-MZM2 modulation divides multiplexing and demultiplexing processing and the path coupling of base band data modulation treatment, is accorded with
Close the optical signal of preset condition；
Specifically, light splitter used in this application is light splitter of point work(than 0.1, the light of LiNb-MZM1 outputs
Carrier wave is divided into two-way using the power splitter, wherein, the power for inputting that road signal of LiNb-MZM2 accounts for LiNb-MZM1 output letters
The 90% of number power, another way power accounts for 10%.
Wherein, in order to generate two light carriers simultaneously, in this application using light Rectangular Band-pass Filter to another
The path that paths, i.e. power account for 10% is filtered, and the method being filtered includes：It is filtered using optical moment shape band logical
Wave device is filtered the paths, to obtain+2 rank light carriers.
As shown in figure 3, the method flow being filtered after a kind of modulation that Fig. 3 is provided for the embodiment of the present application two
Figure, i.e., the process being filtered to the light carrier of LiNb-MZM2 outputs, specifically, going forward side by side after LiNb-MZM2 is modulated
The path of row filtering process specifically carries out wavelength-division multiplex demultiplexing process and the method for base band data modulation treatment includes：
S201：± 4 rank light carriers of LiNb-MZM2 output terminals are filtered out using Wave division multiplexer/demultiplexer；
S202：Base band data is modulated on -4 rank light carriers using light intensity modulator ,+4 rank light carriers do not modulate base
Band data；
S203：Modulated -4 rank light carrier is coupled with+4 rank light carriers using the first photo-coupler.
The second photo-coupler is finally utilized by+2 rank light carriers and modulated -4 rank by the coupling of the first photo-coupler
Light carrier is transmitted together with+4 rank light carrier multiplex.
Increase Dare modulator using cascade connection type lithium niobate Mach and generate relevant light carrier, the bias point of modulator is arranged at
Maximum transmitted point, is powered modulator so not needing to bias DC voltage source, simplifies system structure, and avoid electricity
Press the introducing of drift.
S104：The optical signal for meeting preset condition progress beat frequency is met into predeterminated frequency to obtain using photodetector
Two millimeter waves.
In this application, it can select single mode optical fiber that will meet preset condition using single mode optical fiber as transmitting device
Optical signal transmission is to photodetector.Since single mode optical fiber only transmits a pattern, and without intermode dispersion, Mo Neise is only existed
It dissipates, therefore its dispersion is small, transmission broadband is big, attenuation is small, suitable for large capacity long haul communication.
Finally, the optical signal for meeting preset condition progress beat frequency is met into predeterminated frequency so as to obtain using photodetector
Two millimeter waves.
Wherein, it before air is traveled to, generally requires and band is carried out to two millimeter waves of generation using electric bandpass filter
Pass filter processing, obtains filtered two millimeter waves for meeting predeterminated frequency.
Specifically, the optical signal for meeting preset condition is carried out heterodyne beat processing by optical detector, the electricity after beat frequency is obtained
Electric signal after beat frequency is carried out bandpass filtering treatment by signal, electric bandpass filter, obtains the filtered predeterminated frequency that meets
Two millimeter waves.
S105：Quality testing is carried out to millimeter wave using electric Amplitude Demodulators and bit error rate survey meter.
By above technical scheme it is found that the production method for the millimeter wave that the embodiment of the present application two provides, uses cascade connection type
Lithium niobate Mach increases Dare modulator and generates relevant light carrier, and the bias point of modulator is arranged at maximum transmitted point, i.e., two
The difference of DC offset voltage is 0V, and modulator is powered so not needing to bias DC voltage source, simplifies system knot
Structure, and avoid the introducing of voltage drift, in addition, in system complexity than in the case of relatively low, obtaining larger frequency,
Since light device is sufficiently expensive, the application can generate two millimeter waves simultaneously, be examined this directly reduces cost, and by quality
It surveys, it can be seen that two millimeter wave performances of output are good.
Embodiment three
On the basis of embodiment one, the embodiment of the present application three provides a kind of generation system of millimeter wave, such as Fig. 4 institutes
Show, Fig. 4 is the structure diagram of the generation system of a kind of millimeter wave that the embodiment of the present application three provides.The system includes：Signal
Amplifying device 301 divides work(device 302, processing unit 303 and acquisition device 304, wherein,
Signal amplifying apparatus 301, for by local oscillation signal enhanced processing, obtaining amplified signal using electric amplifier；
In this application, signal amplifying apparatus includes local oscillator and electric amplifier.Electric amplifier is by local oscillator
The local oscillation signal enhanced processing of generation, obtains amplified signal.
Divide work(device 302, for being driven amplified signal in the first lithium niobate Mach after electric splitter divides work(to handle
Increase Dare modulator LiNb-MZM1 and the second lithium niobate Mach increases on Dare modulator LiNb-MZM2；Wherein, LiNb-MZM1 and
The bias point of LiNb-MZM2 is arranged at maximum transmitted point；
Processing unit 303, after laser is injected LiNb-MZM1 using laser, using light splitter by LiNb-
The light carrier of MZM1 outputs is divided into two paths, wherein, paths injection LiNb-MZM2, another paths carry out wavelength-division and answer
After demultiplexing process and base band data modulation treatment, and after LiNb-MZM2 is modulated and the path that is filtered
Coupling, obtains the optical signal for meeting preset condition；
Acquisition device 304, for being accorded with the optical signal for meeting preset condition progress beat frequency using photodetector
Close two millimeter waves of predeterminated frequency.
By above technical scheme it is found that the generation system for the millimeter wave that the embodiment of the present application three provides, uses cascade connection type
Lithium niobate Mach increases Dare modulator and generates relevant light carrier, and the bias point of modulator is arranged at maximum transmitted point, i.e., two
The difference of DC offset voltage is 0V, and modulator is powered so not needing to bias DC voltage source, simplifies system knot
Structure, and avoid the introducing of voltage drift, in addition, in system complexity than in the case of relatively low, obtaining larger frequency,
Since light device is sufficiently expensive, the application can generate two millimeter waves simultaneously, and this directly reduces costs.
Example IV
On the basis of embodiment three, the embodiment of the present application four provides a kind of generation system of more specific millimeter wave,
As shown in figure 5, Fig. 5 is the structure diagram of the generation system of a kind of millimeter wave that the embodiment of the present application four provides.The system packet
It includes：Signal amplifying apparatus 301 divides work(device 302, processing unit 303, acquisition device 304 and quality detection device 305, wherein,
Signal amplifying apparatus 301, for by local oscillation signal enhanced processing, obtaining amplified signal using electric amplifier；
In this application, signal amplifying apparatus includes local oscillator and electric amplifier.Electric amplifier is by local oscillator
The local oscillation signal enhanced processing of generation, obtains amplified signal.
Divide work(device 302, for being driven amplified signal in the first lithium niobate Mach after electric splitter divides work(to handle
Increase Dare modulator LiNb-MZM1 and the second lithium niobate Mach increases on Dare modulator LiNb-MZM2；Wherein, LiNb-MZM1 and
The bias point of LiNb-MZM2 is arranged at maximum transmitted point；
Processing unit 303, after laser is injected LiNb-MZM1 using laser, using light splitter by LiNb-
The light carrier of MZM1 outputs is divided into two paths, wherein, paths injection LiNb-MZM2, another paths carry out wavelength-division and answer
After demultiplexing process and base band data modulation treatment, and after LiNb-MZM2 is modulated and the path that is filtered
Coupling, obtains the optical signal for meeting preset condition；
Wherein, processing unit includes：Light Rectangular Band-pass Filter, for being filtered to another paths, to obtain
Take+2 rank light carriers.
Processing unit further includes：
Wave division multiplexer/demultiplexer, for filtering out ± 4 rank light carriers of LiNb-MZM2 output terminals；
Light intensity modulator, for base band data to be modulated to -4 rank light carriers；
First photo-coupler, for modulated -4 rank light carrier to be coupled with+4 rank light carriers.
Finally, the second photo-coupler by+2 rank light carriers, modulated -4 rank light carrier and+4 rank light carrier multiplex one
It rises and is transmitted.
Acquisition device 304, for being accorded with the optical signal for meeting preset condition progress beat frequency using photodetector
Close two millimeter waves of predeterminated frequency；
Specifically, in the application, acquisition device includes：
Optical detector carries out heterodyne beat processing for that will meet the optical signal of preset condition, obtains the telecommunications after beat frequency
Number；
Electric bandpass filter, for by after beat frequency electric signal carry out bandpass filtering treatment, obtain it is filtered meet it is pre-
If two millimeter waves of frequency.
Quality detection device 305, for carrying out quality inspection to millimeter wave using electric Amplitude Demodulators and bit error rate survey meter
It surveys.
Specifically, in the embodiment of the present application, can mutually be referred to the same or similar ground of other embodiment, in the application
In repeat no more.
By above technical scheme it is found that the generation system for the millimeter wave that the embodiment of the present application four provides, uses cascade connection type
Lithium niobate Mach increases Dare modulator and generates relevant light carrier, and the bias point of modulator is arranged at maximum transmitted point, i.e., two
The difference of DC offset voltage is 0V, and modulator is powered so not needing to bias DC voltage source, simplifies system knot
Structure, and avoid the introducing of voltage drift, in addition, in system complexity than in the case of relatively low, obtaining larger frequency,
Since light device is sufficiently expensive, the application can generate two millimeter waves simultaneously, be examined this directly reduces cost and by quality
It surveys, it can be seen that two millimeter wave performances of output are good.
Embodiment five
As shown in fig. 6, Fig. 6 is the structure chart of the generation system of a kind of millimeter wave that the embodiment of the present application five provides.Wherein,
LD represents laser；LO represents local oscillator；EA represents electric amplifier；ES represents electric splitter；EPS represents electric phase offset
Device；OS represents light splitter；LiNb-MZM represents that lithium niobate Mach increases Dare modulator；WDM Demux represent wavelength-division multiplex solution
Multiplexer；PPG represents impulse generator；ORBPF represents light Rectangular Band-pass Filter；OC represents photo-coupler；EDFA expressions are mixed
Doped fiber amplifier；SMF represents single mode optical fiber；PD represents photodetector；EBPF represents electric bandpass filter；EAD represents electricity
Amplitude Demodulators；BERT represents bit error rate survey meter；CO represents central office；BS represents base station.
Wherein, the systematic parameter of each element is as follows：
LD:Working frequency 193.1THz, power 15dBm, line width 10MHz.
LiNb-MZM 1&2:Insertion loss 5dB, extinction ratio 20dB, half-wave voltage 4V.
MZM 3:Insertion loss 5dB, extinction ratio 20dB, half-wave voltage 4V.
LO:Frequency 7.5GHz, power 4.5dBm.
EA:Gain amplifier 36.5dB.
EPS 1&2:Deviation angle 180 degree.
OS:Divide work(than 0.1.
ORBPF:Working frequency 193.115THz, bandwidth 10GHz, insertion loss 5dB.
WDM Demux:The working frequency of two channels is respectively 193.07THz and 193.13THz, and bandwidth is 8GHz,
Insertion Loss is 5dB.
PPG:Bit number is 211- 1 pseudo random number.
EDFA：Form is power controller, power 15dBm.
SMF:Dispersion values at loss 0.2dB/km, 1550nm are 16.75ps/nm/km.
PD:Sensitivity 1A/W.
EBPF 1：Working frequency 45GHz, bandwidth 1.5* bit rates, insertion loss 5dB.
EBPF 2：Working frequency 60GHz, bandwidth 1.5* bit rates, insertion loss 5dB.
The application's the result is that obtained using 9.0 software emulations of Optisystem.It first will be originally using electric amplifier EA
The signal LO that shakes amplifies, and then drives on LiNb-MZM 1 and LiNb-MZM 2, two modulators are in the effect of EPS1 and EPS2
Under, all it is biased in maximum transmitted point.Laser LD is injected into LiNb-MZM 1, and multiple harmonic waves, power can be generated in output terminal
Highest is ± 2 rank light carriers, shown in below figure 7 (a).Light splitter OS be point work(than the light splitter for 0.1, that is,
It says, the power that path above is occupied is the 90% of 1 output terminals of LiNb-MZM, and the power that following path is occupied is LiNb-
1 output terminals of MZM 10% (in this way setting divide work(than the reason of be that the device that the optical signal in path above passes through is more,
Insertion loss is larger).By the modulation again of LiNb-MZM 2, carrier number becomes more, as shown in Fig. 7 (b).It is answered by using wavelength-division
± 4 rank light carriers of 2 output terminals of LiNb-MZM are filtered out come then using light intensity modulator with demultiplexer WDM Demux
Base band data is modulated on -4 rank light carriers by MZM 3, and+4 rank light carriers do not modulate base band data, specific as shown in Fig. 7 (c).
In order to generate two light carriers simultaneously, smooth Rectangular Band-pass Filter used herein will account for 1 output terminals of LiNb-MZM
+ 2 rank light carriers in 10% power path filter out (shown in such as Fig. 7 (d)), are then closed with ± 4 rank light carrier above-mentioned
Wave is transmitted together, as shown in Fig. 7 (e).In base station BS, the optical signal that will be schemed by photodetector in (e) carries out
Beat frequency, that is, clean light carrier respectively and carry the light carrier beat frequency of base band data, will obtain two millimeter waves.
What is generated in the present embodiment is the millimeter wave of 45GHz and 60GHz, and then the two millimeter waves are transferred in air
It is transmitted, realizes the generation of high-frequency electrical millimeter wave, and signal has been transferred to far place by optical fiber, overcome
High frequency electrical signal cannot be transferred to remote shortcoming in air.
In the present embodiment, it is equal using electric Amplitude Demodulators EAD1 and EAD2 and bit error rate survey meter BERT1 and BERT2
It is the verification work for generating signal quality.In practice, electric bandpass filter is used after photoelectric detector PD beat frequency
The signal that EBPF1 and EBPF2 are filtered out can be propagate directly to air and suffer.
By analysis, it is 2 in the bit number of transmission11When -1, by the demodulation to millimeter wave, obtained 45GHz millimeter waves
Eye pattern as shown in figure 8, wherein, (a) represents back-to-back, i.e., eye pattern when Optical Fiber Transmission distance is 0, and (b) represents optical fiber transmission
Eye pattern when distance is 25km, (c) represent eye pattern when Optical Fiber Transmission distance is 50km；The obtained eye pattern of 60GHz millimeter waves
As shown in figure 9, wherein, (a) represents back-to-back, i.e., eye pattern when Optical Fiber Transmission distance is 0, (b) represents that Optical Fiber Transmission distance is
Eye pattern during 25km, (c) represent eye pattern when Optical Fiber Transmission distance is 50km.(BTB is error rate analyzer situation as shown in Figure 10
Back-to-back transmission), wherein, (a) represents the bit error rate schematic diagram of 45GHz millimeter waves, and (b) represents the bit error rate of 60GHz millimeter waves
Schematic diagram, as a result display can generate two millimeter waves, and work as Optical Fiber Transmission distance simultaneously using structure used by the application
During for 50km, eye pattern is still opening.When the bit error rate is 1 × 10-9When, for the millimeter wave of 45GHz, power when transmitting 25km
It compensates as 0.2dB, power back-off is 0.6dB when transmitting 50km.For the millimeter wave of 60GHz, power back-off is when transmitting 25km
0.5dB, power back-off is 1.1dB when transmitting 50km.As a result the performance of two millimeter waves caused by display is good.
By above technical scheme it is found that increasing Dare modulator using cascade connection type lithium niobate Mach generates relevant light carrier,
It carrying out not detaching relevant light carrier during coherent light carrier modulation, the bias point of modulator is arranged at maximum transmitted point, i.e., and two
The difference of a DC offset voltage is 0V, and modulator is powered so not needing to bias DC voltage source, simplifies system
Structure, and avoid the introducing of voltage drift, in addition, in system complexity than in the case of relatively low, obtaining larger frequency multiplication
Number, and two millimeter waves, 45GHz (frequency is 6 times of local frequency) and 60GHz (frequency is 8 times of local oscillator) can be generated simultaneously,
Reduce system cost.
Finally, it is to be noted that, herein, relational terms such as first and second and the like be used merely to by
One entity or operation are distinguished with another entity or operation, without necessarily requiring or implying these entities or operation
Between there are any actual relationship or orders.Moreover, term " comprising ", "comprising" or its any other variant meaning
Covering non-exclusive inclusion, so that process, method, article or equipment including a series of elements not only include that
A little elements, but also including other elements that are not explicitly listed or further include for this process, method, article or
The intrinsic element of equipment.In the absence of more restrictions, the element limited by sentence "including a ...", is not arranged
Except also there are other identical elements in the process, method, article or apparatus that includes the element.
Each embodiment is described by the way of progressive in this specification, the highlights of each of the examples are with other
The difference of embodiment, just to refer each other for identical similar portion between each embodiment.
The foregoing description of the disclosed embodiments enables professional and technical personnel in the field to realize or using the application.
A variety of modifications of these embodiments will be apparent for those skilled in the art, it is as defined herein
General Principle can in other embodiments be realized in the case where not departing from spirit herein or range.Therefore, the application
The embodiments shown herein is not intended to be limited to, and is to fit to and the principles and novel features disclosed herein phase one
The most wide range caused.
Claims (10)
1. a kind of production method of millimeter wave, which is characterized in that this method includes：
Using electric amplifier by local oscillation signal enhanced processing, amplified signal is obtained；
By the amplified signal, driving increases Dare modulator LiNb- in the first lithium niobate Mach after electric splitter divides work(to handle
MZM1 and the second lithium niobate Mach increase on Dare modulator LiNb-MZM2；Wherein, the LiNb-MZM1 and LiNb-MZM2
Bias point be arranged at maximum transmitted point；
After laser is injected the LiNb-MZM1 using laser, carried using the light that light splitter exports the LiNb-MZM1
Wavelength-division is two paths, wherein, a paths inject the LiNb-MZM2, after another paths are filtered, with process
Traveling wave of going forward side by side after the LiNb-MZM2 modulation divides multiplexing and demultiplexing processing and the path coupling of base band data modulation treatment, obtains
To the optical signal for meeting preset condition；
The optical signal for meeting preset condition is subjected to beat frequency to obtain two that meet predeterminated frequency using photodetector
Millimeter wave.
2. the production method of millimeter wave according to claim 1, which is characterized in that another paths are filtered place
Reason includes：
Another paths are filtered using light Rectangular Band-pass Filter, to obtain+2 rank light carriers.
3. the production method of millimeter wave according to claim 1, which is characterized in that described to pass through the LiNb-MZM2 tune
Traveling wave of going forward side by side after system divides the method that multiplexing and demultiplexing is handled and the path of base band data modulation treatment is specifically filtered
Including：
± 4 rank light carriers of the LiNb-MZM2 output terminals are filtered out using Wave division multiplexer/demultiplexer；
Base band data is modulated on -4 rank light carriers using light intensity modulator；
Modulated -4 rank light carrier is coupled with+4 rank light carrier.
4. the production method of millimeter wave according to claim 1, which is characterized in that described to utilize photodetector by described in
The optical signal for meeting preset condition carries out beat frequency and meets two millimeter waves of predeterminated frequency to obtain and include：
The optical signal for meeting preset condition is carried out heterodyne beat processing by the photodetector, obtains the telecommunications after beat frequency
Number；
Electric signal after the beat frequency is carried out bandpass filtering treatment by electric bandpass filter, obtains filtered meeting predeterminated frequency
Two millimeter waves.
5. the production method of millimeter wave according to claim 1, which is characterized in that further include：Utilize electric Amplitude Demodulators
Quality testing is carried out to the millimeter wave with bit error rate survey meter.
6. a kind of generation system of millimeter wave, which is characterized in that the system includes：
Signal amplifying apparatus, for by local oscillation signal enhanced processing, obtaining amplified signal using electric amplifier；
Divide work(device, for driving to increase moral in the first lithium niobate Mach after electric splitter divides work(to handle by the amplified signal
On your modulator LiNb-MZM1 and the second lithium niobate Mach increasing Dare modulator LiNb-MZM2；Wherein, the LiNb-MZM1 and
The bias point of the LiNb-MZM2 is arranged at maximum transmitted point；
Processing unit, after laser is injected the LiNb-MZM1 using laser, using light splitter by the LiNb-
The light carrier of MZM1 outputs is divided into two paths, wherein, a paths inject the LiNb-MZM2, and another paths are filtered
After wave processing, divide at multiplexing and demultiplexing processing and base band data modulation with traveling wave of going forward side by side after LiNb-MZM2 modulation
The path coupling of reason, obtains the optical signal for meeting preset condition；
Acquisition device, the optical signal for meeting preset condition by described using photodetector carry out beat frequency with obtain meet it is pre-
If two millimeter waves of frequency.
7. the generation system of millimeter wave according to claim 6, which is characterized in that the processing unit includes：Optical moment shape
Bandpass filter, for being filtered to another paths, to obtain+2 rank light carriers.
8. the generation system of millimeter wave according to claim 6, which is characterized in that the processing unit includes：
Wave division multiplexer/demultiplexer, for filtering out ± 4 rank light carriers of the LiNb-MZM2 output terminals；
Light intensity modulator, for base band data to be modulated to -4 rank light carriers；
First photo-coupler, for modulated -4 rank light carrier to be coupled with+4 rank light carrier.
9. the generation system of millimeter wave according to claim 6, which is characterized in that the acquisition device includes：
The photodetector, for the optical signal for meeting preset condition to be carried out heterodyne beat processing, after obtaining beat frequency
Electric signal；
Electric bandpass filter, for by after the beat frequency electric signal carry out bandpass filtering treatment, obtain it is filtered meet it is pre-
If two millimeter waves of frequency.
10. the generation system of millimeter wave according to claim 6, which is characterized in that further include：Quality detection device is used
In carrying out quality testing to the millimeter wave using electric Amplitude Demodulators and bit error rate survey meter.
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| CN113783627B (en) * | 2020-06-09 | 2022-12-30 | 华为技术有限公司 | Signal generation method, device and system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101777953A (en) * | 2010-01-08 | 2010-07-14 | 西安电子科技大学 | Light double-sideband modulation device and method for transmitting two paths of signals |
| CN103888191A (en) * | 2014-03-19 | 2014-06-25 | 北京邮电大学 | Microwave photon down-conversion method based on bi-directional utilization of phase modulator |
| CN105357159A (en) * | 2015-09-29 | 2016-02-24 | 北京邮电大学 | Method and system for generating ninefold-frequency QPSK optical millimeter-wave signal |
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| CN101777953A (en) * | 2010-01-08 | 2010-07-14 | 西安电子科技大学 | Light double-sideband modulation device and method for transmitting two paths of signals |
| CN103888191A (en) * | 2014-03-19 | 2014-06-25 | 北京邮电大学 | Microwave photon down-conversion method based on bi-directional utilization of phase modulator |
| CN105357159A (en) * | 2015-09-29 | 2016-02-24 | 北京邮电大学 | Method and system for generating ninefold-frequency QPSK optical millimeter-wave signal |
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