CN109270765A - A kind of adjustable single order ultra-broadband signal production method of the full light of single wavelength and device - Google Patents
A kind of adjustable single order ultra-broadband signal production method of the full light of single wavelength and device Download PDFInfo
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- CN109270765A CN109270765A CN201811324615.4A CN201811324615A CN109270765A CN 109270765 A CN109270765 A CN 109270765A CN 201811324615 A CN201811324615 A CN 201811324615A CN 109270765 A CN109270765 A CN 109270765A
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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
- G02F3/00—Optical logic elements; Optical bistable devices
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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
- G02F1/35—Non-linear optics
- G02F1/39—Non-linear optics for parametric generation or amplification of light, infrared or ultraviolet waves
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Abstract
The invention discloses a kind of adjustable single order ultra-broadband signal production method of the full light of single wavelength and devices.The present invention obtains the positive and negative polar Gauss-pulse on Same Wavelength by dual-port optical logic NOT gate using the Gauss-pulse of positive polarity, using delay, combination, realizes the output of full light single order ultra-broadband signal on single wavelength.Pulse width, the radio-frequency spectrum of produced signal are tunable, and the positive-negative polarity of pulse is changeable.The apparatus structure is simple, operation is convenient, cost of implementation is low, and can be by the simple manipulation that is delayed to light, while realizing pulse width and radio-frequency spectrum is tunable and pulse polarity is changeable function, has preferable practical value and practical operability.
Description
Technical field
The present invention relates to microwave photons and technical field of photo communication, and in particular to a kind of adjustable single order of full light of single wavelength
Ultra-broadband signal production method and device.
Background technique
Bandwidth is very wide, transmission rate is higher, transmission power is extremely low and power consumption because having for super-broadband tech in wireless communication
Small, the advantages that confidentiality is preferable, and it is considered as a kind of very promising emerging technology, in short distance, large capacity channel radio
There is very wide application prospect in letter system and broadband sensing network.However due to damage when radiofrequency signal is propagated in air
Consumption is very big, and is easy the blocking by barrier, and the transmission power of super-broadband tech defined is again extremely low, so it is mainly answered
For the occasion of the short-distance wireless communications such as wireless personal area network and WLAN, and it is unsuitable straight in the form of radiofrequency signal
Connect the transmission for carrying out long range in air.However, if only merely using super-broadband tech in radio communication, it is difficult
To construct the communication network for having wide covering surface, the application range of super-broadband tech is significantly limited.
Optical fiber telecommunications system then has the advantages that the uniqueness such as low, strong antijamming capability is lost in long distance transmission.Therefore,
Super-broadband tech is merged with Fibre Optical Communication Technology, it is extraordinary when carrying out remotely connected to become ultra-broadband signal
Solution.Recently, this fusion is but also the research for directly generating ultra-broadband signal in area of light causes great concern.
The system that especially pulse width and radio-frequency spectrum are tunable, pulse polarity is changeable will make the application of super-broadband tech more
Flexibly, adaptation range is more extensive.
2010, the research group of the Central China University of Science and Technology reported a kind of adjustable changeable single order ultra-broadband signal of full light
Generation scheme, but ultra-wideband pulse caused by the program is not on single wavelength, is the mixed signal in two optical wavelength.This
Kind mixed signal, due to the influence of dispersion, can make the signal on two wavelength go away when by optical fiber transmission, without
It is able to maintain the shape of single order ultra-wideband pulse.2012, which used semiconductor amplifier when double-width grinding real again
The generation of ultra-broadband signal is showed, but ultra-wideband pulse caused by the program is still the mixing letter on two different wave lengths
Number, and and pulse width is not implemented and radio-frequency spectrum is tunable and pulse polarity is changeable function.At present for single wavelength
There are reports for the upper research for realizing that pulse polarity is changeable, but is able to achieve pulse width again at the same time and radio-frequency spectrum is adjustable
Humorous function is then more difficult, it is still necessary to carry out deeper into research.
Summary of the invention
For above-mentioned deficiency in the prior art, a kind of adjustable single order ultra wide band of the full light of single wavelength provided by the invention
It is complicated that signal generating method and device solve existing optics single order ultrawide band signal generator mechanism, it is difficult to realize simultaneously
The problem of tunable and changeable and generated signal not on single wavelength.
In order to achieve the above object of the invention, a kind of the technical solution adopted by the present invention are as follows: full light of single wavelength adjustable one
Rank ultra-broadband signal production method, comprising the following steps:
S1, two input ports that input signal light and input detection light are injected separately into dual-port optical logic NOT gate,
And output detection light and output signal light are respectively obtained in two output ends；
S2, output signal light is inputted into adjustable time delay unit 1, output detection light is inputted into adjustable time delay unit 2, makes to export
There is relative time delay between signal light and output detection light；
S3, output signal light and output detection light are merged into output pulse, by adjusting adjustable time delay unit 1 and adjustable
The amount of delay of delay unit 2 changes the size of relative time delay, and then realizes the changeable of output pulse polarity.
Further: the production method of input signal light and input detection light in the step S1 are as follows: what laser generated
Laser is divided into two-way by the first coupler, wherein being made all the way by the Gauss-pulse that light modulator modulates obtain positive polarity
For input signal light, another way carries out decorrelation LMS as input detection light by single mode optical fiber.
Further: the calculation method of relative time delay in the step S2 are as follows:
Δ t=Δ t1-Δt2
In above formula, Δ t is relative time delay, Δ t1For the amount of delay of adjustable time delay unit 1, Δ t2For adjustable time delay unit 2
Amount of delay.
Further: the positive polarity and negative polarity switching method of pulse are exported in the step S3 are as follows:
As relative time delay Δ t < 0, output pulse is positive polar single order ultra-wideband pulse, as relative time delay Δ t > 0
When, output pulse is negative polar single order ultra-wideband pulse.
A kind of adjustable single order ultra-broadband signal generation device of the full light of single wavelength, including dual-port optical logic NOT gate,
Adjustable time delay unit 1 and adjustable time delay unit 2, two output ends of the dual-port optical logic gate respectively with adjustable delay list
Member 1 and adjustable time delay unit 2 connect.
Further: further including the first optical circulator and the second optical circulator, the 1 end connection of first optical circulator is defeated
Enter and detect light, 2 ends of first optical circulator are connect with dual-port optical logic NOT gate, 3 ends of first optical circulator
It is connect with adjustable time delay unit 1,1 end of second optical circulator connects input signal light, 2 ends of second optical circulator
It is connect with dual-port optical logic NOT gate, 3 ends of second optical circulator are connect with adjustable time delay unit 2.
Further: the adjustable time delay unit 1 and adjustable time delay unit 2 are connect with the second coupler.
Further: the dual-port optical logic NOT gate is semiconductor optical amplifier.
Further: the adjustable time delay unit 1 and respectively the first adjustable optical delay line and second of adjustable time delay unit 2
Adjustable optical delay line.
The invention has the benefit that laser is divided into two-way by coupler by the present invention, and pass through the first optical circulator
The direction for changing optical signal with the second optical circulator, carries out the selection of optical path, has obtained same wave using semiconductor optical amplifier
The light pulse of positive and negative polar Gauss-pulse in length, reverse transfer can generate modulation to the continuous probe light of forward direction transmission,
So that the upper signal light opposite polarity information with former reverse transfer is modulated when the detection light of positive transmission is exported from rear end face,
Formed negative polarity Gauss-pulse, and the signal light of reverse transfer front end face export when, shape remains the height of positive polarity
This light pulse realizes the output of full light single order ultra-broadband signal on single wavelength using delay, combination.Produced signal
Pulse width, radio-frequency spectrum is tunable, and the positive-negative polarity of pulse is changeable.The apparatus structure is simple, operation is convenient, is implemented as
This is low, and can be by the simple manipulation that is delayed to light, while realizing pulse width and radio-frequency spectrum is tunable and pulse pole
Property changeable function, there is preferable practical value and practical operability.
Detailed description of the invention
Fig. 1 is method schematic of the invention；
Fig. 2 is flow chart of the invention；
Fig. 3 is the device of the invention structure chart；
Fig. 4 is the output time-domain figure of the positive polarity optics single order ultra-broadband signal emulated in the embodiment of the present invention；
Fig. 5 is the output radio-frequency spectrum of the positive polarity optics single order ultra-broadband signal emulated in the embodiment of the present invention；
Fig. 6 is the output time-domain figure of the negative polarity optics single order ultra-broadband signal emulated in the embodiment of the present invention；
Fig. 7 is the output radio-frequency spectrum of the negative polarity optics single order ultra-broadband signal emulated in the embodiment of the present invention.
Specific embodiment
A specific embodiment of the invention is described below, in order to facilitate understanding by those skilled in the art this hair
It is bright, it should be apparent that the present invention is not limited to the ranges of specific embodiment, for those skilled in the art,
As long as various change is in the spirit and scope of the present invention that the attached claims limit and determine, these variations are aobvious and easy
See, all are using the innovation and creation of present inventive concept in the column of protection.
As Fig. 1 and Fig. 2 jointly shown in, a kind of adjustable single order ultra-broadband signal production method of the full light of single wavelength, including
Following steps:
S1, two input ports that input signal light and input detection light are injected separately into dual-port optical logic NOT gate,
And output detection light and output signal light, the production method of input signal light and input detection light are respectively obtained in two output ends
Are as follows: the laser that laser generates is divided into two-way by the first coupler, wherein obtaining anode by light modulator modulates all the way
Property Gauss-pulse as input signal light, another way passes through single mode optical fiber and carries out decorrelation LMS as input detection light.
S2, output signal light is inputted into adjustable time delay unit 1, output detection light is inputted into adjustable time delay unit 2, makes to export
There is relative time delay, the calculation method of relative time delay between signal light and output detection light are as follows:
Δ t=Δ t1-Δt2
In above formula, Δ t is relative time delay, Δ t1For the amount of delay of adjustable time delay unit 1, Δ t2For adjustable time delay unit 2
Amount of delay.
S3, output signal light and output detection light are merged into output pulse, by adjusting adjustable time delay unit 1 and adjustable
The amount of delay of delay unit 2 changes the size of relative time delay, and then realizes the changeable of output pulse polarity.Export pulse
Positive polarity and negative polarity switching method are as follows:
As relative time delay Δ t < 0, output pulse is positive polar single order ultra-wideband pulse, as relative time delay Δ t > 0
When, output pulse is negative polar single order ultra-wideband pulse.
As shown in figure 3, a kind of adjustable single order ultra-broadband signal generation device of the full light of single wavelength, including dual-port optics
Logic inverter, adjustable time delay unit 1 and adjustable time delay unit 2, two output ends of dual-port optical logic gate respectively with it is adjustable
Delay unit 1 and adjustable time delay unit 2 connect.
One embodiment of the present of invention are as follows: it further include the first optical circulator and the second optical circulator, the 1 of the first optical circulator
End connection input detection light, 2 ends of the first optical circulator are connect with dual-port optical logic NOT gate, 3 ends of the first optical circulator
It is connect with adjustable time delay unit 1,1 end of the second optical circulator connects input signal light, 2 ends of the second optical circulator and dual-port
The connection of optical logic NOT gate, 3 ends of the second optical circulator are connect with adjustable time delay unit 2.
One embodiment of the present of invention are as follows: adjustable time delay unit 1 and adjustable time delay unit 2 are connect with the second coupler.
One embodiment of the present of invention are as follows: dual-port optical logic NOT gate is semiconductor optical amplifier.
One embodiment of the present of invention are as follows: adjustable time delay unit 1 and respectively the first tunable optical delay of adjustable time delay unit 2
Line and the second adjustable optical delay line.
As shown in figure 4, single order ultra-wideband pulse of the equipment therefor to the positive polarity of generation in the present embodiment that emulation obtains
The time domain waveform of pulse width tuning is carried out, three subgraphs show respectively relative time delay in -120ps, -80ps and -40ps
Output pulse shape；Fig. 5 indicates in Fig. 4 radio-frequency spectrum corresponding to output signal under various relative time delays.Fig. 6 then gives phase
The time domain waveform of the single order ultra-wideband pulse of generated negative polarity when being respectively adjusted to 120ps, 80ps and 40ps to delay, figure
Radio-frequency spectrum corresponding to output signal under various relative time delays in 7 expression Fig. 6.From figure it can be found that as amount of delay is absolute
The reduction of value, the pulsewidth of signal reduces therewith in time-domain diagram, and the centre frequency and bandwidth of signal can be in corresponding radio-frequency spectrum
Increase；Conversely, the pulsewidth of signal increases with it in time-domain diagram with the increase of amount of delay, signal in corresponding radio-frequency spectrum
Centre frequency and bandwidth can reduce therewith.In addition, when relative time delay switches between positive and negative values, the single order optics ultra-wide of output
The polarity of band signal can invert therewith.Thus, the single order optics ultra wide band of device generation is preferably reflected from Fig. 4-7
The pulse width of signal and the tunable of radio-frequency spectrum and pulse polarity changeable.
Claims (9)
1. a kind of adjustable single order ultra-broadband signal production method of the full light of single wavelength, which comprises the following steps:
S1, two input ports that input signal light and input detection light are injected separately into dual-port optical logic NOT gate, and
Two output ends respectively obtain output detection light and output signal light；
S2, output signal light is inputted into adjustable time delay unit 1, output detection light is inputted into adjustable time delay unit 2, makes output signal
There is relative time delay between light and output detection light；
S3, output signal light and output detection light are merged into output pulse, by adjusting adjustable time delay unit 1 and adjustable delay
The amount of delay of unit 2 changes the size of relative time delay, and then realizes the changeable of output pulse polarity.
2. the adjustable single order ultra-broadband signal production method of the full light of single wavelength according to claim 1, which is characterized in that
The production method of input signal light and input detection light in the step S1 are as follows: the laser that laser generates passes through the first coupler
It is divided into two-way, wherein the Gauss-pulse of positive polarity is obtained by light modulator modulates all the way as input signal light, it is another
Road carries out decorrelation LMS as input detection light by single mode optical fiber.
3. the adjustable single order ultra-broadband signal production method of the full light of single wavelength according to claim 1, which is characterized in that
The calculation method of relative time delay in the step S2 are as follows:
Δ t=Δ t1-Δt2
In above formula, Δ t is relative time delay, Δ t1For the amount of delay of adjustable time delay unit 1, Δ t2For the delay of adjustable time delay unit 2
Amount.
4. the adjustable single order ultra-broadband signal production method of the full light of single wavelength according to claim 1, which is characterized in that
The positive polarity and negative polarity switching method of pulse are exported in the step S3 are as follows:
As relative time delay Δ t<0, output pulse is positive polar single order ultra-wideband pulse, as relative time delay Δ t>0, output
Pulse is negative polar single order ultra-wideband pulse.
5. a kind of adjustable single order ultra-broadband signal generation device of the full light of single wavelength, which is characterized in that including dual-port optics
Logic inverter, adjustable time delay unit 1 and adjustable time delay unit 2, two output ends of the dual-port optical logic gate respectively with
Adjustable time delay unit 1 and adjustable time delay unit 2 connect.
6. the adjustable single order ultra-broadband signal generation device of the full light of single wavelength according to claim 5, which is characterized in that
It further include the first optical circulator and the second optical circulator, the 1 end connection of first optical circulator, which inputs, detects light, and described first
2 ends of optical circulator are connect with dual-port optical logic NOT gate, and 3 ends of first optical circulator and adjustable time delay unit 1 connect
It connects, 1 end of second optical circulator connects input signal light, 2 ends of second optical circulator and dual-port optical logic
NOT gate connection, 3 ends of second optical circulator are connect with adjustable time delay unit 2.
7. the adjustable single order ultra-broadband signal generation device of the full light of single wavelength according to claim 5, which is characterized in that
The adjustable time delay unit 1 and adjustable time delay unit 2 are connect with the second coupler.
8. the adjustable single order ultra-broadband signal generation device of the full light of single wavelength according to claim 5, which is characterized in that
The dual-port optical logic NOT gate is semiconductor optical amplifier.
9. the adjustable single order ultra-broadband signal generation device of the full light of single wavelength according to claim 5, which is characterized in that
The adjustable time delay unit 1 and adjustable time delay unit 2 are respectively the first adjustable optical delay line and the second adjustable optical delay line.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109981177A (en) * | 2019-04-04 | 2019-07-05 | 电子科技大学 | A kind of adjustable second order ultra-broadband signal production method of the full light of single wavelength and device |
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|---|---|---|---|---|
| CN101556377A (en) * | 2009-04-30 | 2009-10-14 | 北京交通大学 | Optical generator of Ultra wideband Gauss monocyclic pulse |
| WO2015132772A2 (en) * | 2014-03-07 | 2015-09-11 | Elettronica S.P.A. | Photonic-assisted rf spectrum scanner for ultra-wide band receivers |
| CN204966963U (en) * | 2015-09-22 | 2016-01-13 | 北京亿中盛科技发展有限公司 | Based on semiconductor light amplifier and light pulse production ultra wide band pulser |
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2018
- 2018-11-08 CN CN201811324615.4A patent/CN109270765A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101556377A (en) * | 2009-04-30 | 2009-10-14 | 北京交通大学 | Optical generator of Ultra wideband Gauss monocyclic pulse |
| WO2015132772A2 (en) * | 2014-03-07 | 2015-09-11 | Elettronica S.P.A. | Photonic-assisted rf spectrum scanner for ultra-wide band receivers |
| CN204966963U (en) * | 2015-09-22 | 2016-01-13 | 北京亿中盛科技发展有限公司 | Based on semiconductor light amplifier and light pulse production ultra wide band pulser |
Non-Patent Citations (2)
| Title |
|---|
| VANESSA MORENO ET AL: "UWB Monocycle Generator Based on the Non-Linear Effects of an SOA-Integrated Structure", 《IEEE PHOTONICS TECHNOLOGY LETTERS》 * |
| ZHEFENG HU ET AL: "Proposal for All-Optical Switchable and Tunable Ultrawideband Monocycle Generation Utilizing SOA Wavelength Conversion and Time Delay", 《PHOTONIC SENSORS》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109981177A (en) * | 2019-04-04 | 2019-07-05 | 电子科技大学 | A kind of adjustable second order ultra-broadband signal production method of the full light of single wavelength and device |
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