CN108628056A - Administer the method that optics distorted wave generates the super continuous spectrums of controllability - Google Patents
Administer the method that optics distorted wave generates the super continuous spectrums of controllability Download PDFInfo
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- CN108628056A CN108628056A CN201710153878.2A CN201710153878A CN108628056A CN 108628056 A CN108628056 A CN 108628056A CN 201710153878 A CN201710153878 A CN 201710153878A CN 108628056 A CN108628056 A CN 108628056A
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- optics
- optical fiber
- distorted wave
- light source
- wave
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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
- G02F1/365—Non-linear optics in an optical waveguide structure
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- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
Abstract
The invention discloses a kind of improvement optics optics distorted waves to obtain the new method of the super continuous spectrums of controllability.It is characterized in that, by two identical monochromaticjty laser light sources, two-stage cascade optical fiber is injected by optical coupling beat frequency, receives the signal of output, wherein light source 1 is used as pump light source, light source 2 to be used as signal optical source.Using cascade the two poles of the earth optical fiber structure, the first order is single zero dispersion optical fiber, inhibit influence of the noise to pulse evolution by selecting optimum modulation frequency, the metastable generation of induced optical distorted wave selects suitable modulation depth and fiber lengths that optics distorted wave is made to have higher output intensity.The second level is double zero dispersion optical fiber, to administer optics distorted wave；Pass through double zero dispersion optical fiber of the selection with different zero dispersion point positions, so that optics distorted wave is converted into the form of base rank orphan or dispersive wave, to obtain the super continuous spectrums with different bandwidth range and flatness, while avoiding harmful effect of the optics distorted wave to fibre system signal transmission.
Description
Technical field
The present invention relates to cascaded optical fibers to obtain the supercontinuum generation of controllability for administering optics distorted wave.
Background technology
Supercontinuum generation in non-linear optical field, optical fiber is a significantly research topic.From
Since 1970 report supercontinuum generation for the first time, it has been widely used in optical frequency measurement, pulse compression, light phase dried layer
Analysis technology etc..High stability, wide bandwidth and the high flatness of super continuous spectrums promote its application aspect play it is most important
Effect.When long pulse (such as：Picosecond, nanosecond or continuous wave) when be used as pumping pulse, the super continuous spectrums of generation have one
A little apparent advantages, such as higher spectral power density and smoother frequency spectrum, therefore it has wider application.This
When, the unstable four-wave mixing effect by phase matched of modulation of noise-induced is to important work from the starting stage of video stretching
With.Next, high-order dispersion and excited Raman start to influence the nonlinear kinetics differentiation of pulse and spectral evolution.In long pulse
It is a kind of to have long wavelength's Raman soliton of very high strength, very big energy and Bu Duan Red shiftings as statistics during evolution
Rare event and occur, this soliton pulse be referred to as optics distorted wave.During super be formed continuously, a large amount of red shift orphan frequencies
It collides numerously, the transfer of energy occurs, to generate optics distorted wave.Under the modulation instability condition of noise-induced,
The generation of optics distorted wave is extremely unstable, and the very high strength of optics distorted wave is for the signal transmission of fibre system
Also there is prodigious harm.Meanwhile exporting the most energy of pulse and concentrating on optics distorted wave, this is inhibited
Smooth and broadband supercontinuum generation.Therefore, how to administer optics distorted wave and generate smooth, stable, broadband super continuous spectrums
As an important topic.
Here, it is proposed that a kind of cascading double zero dispersion optical fiber to administer optics distorted wave to obtain the super of controllability
The new method of continuous spectrum.In first order list zero dispersion optical fiber, is occurred using signal light human-induced modulational instability, pass through choosing
Optimum modulation frequency is selected to inhibit influence of the noise to pulse evolution to make the metastable generation of optics distorted wave, selection suitable
Modulation depth and fiber lengths make optics distorted wave have higher output intensity.There is difference zero followed by cascade
Double zero dispersion optical fiber of dispersion point position so that optics distorted wave is converted into the form of base rank orphan or dispersive wave, to
The super continuous spectrums with different bandwidth range and flatness are obtained, while avoiding optics distorted wave to fibre system steady operation
Harmful effect.Entire optical fibre device is compact-sized, and reliability is high, easy to adjust.
Invention content
It is an object of the invention to obtain bandwidth and the adjustable super continuous spectrums of flatness, while avoiding optics distorted wave pair
The harmful effect of fibre system normal table work provides one kind and administering optics distorted wave by cascading the two poles of the earth optical fiber to obtain
Obtain the new method of the super continuous spectrums of controllability.This method uses the light for closing on two frequencies to carry out beat frequency injection cascaded optical fiber.
The cascaded optical fiber is made of single zero dispersion point optical fiber and double zero dispersion points optical fiber two parts.In first order list zero dispersion point optical fiber
In, by selecting best modulating frequency, suitable modulation depth and fiber lengths, generate the high intensity optics of higher stability
Distorted wave.In the double zero dispersion optical fiber of second part, by the position for changing fiber zero dispersion point so that optics distorted wave converts
For the form of base rank solitary wave or dispersive wave, to generate the super continuous spectrums with different bandwidth range and flatness.
The realization of the object of the invention is completed by following technical scheme：
It is a kind of to administer optics distorted wave by cascading double zero dispersion optical fiber to obtain the super continuous spectrums of controllability
New method, it is characterised in that：Light source is the fabulous laser of two duplicate monochromaticjty, and one is used as pump light source, one
Platform is as signal optical source；The modulating frequency needed is obtained by adjusting the output wavelength of wherein one laser；Suitable modulation
Depth is obtained by adjusting the relative power output of pump light source and signal optical source；The selection of fiber lengths is based on " cutting " method.
The laser output wavelength can be visible light wave range, communication band, can also be middle infrared band.
The modulating frequency of the needs realized by the water cooling temperature of Regulate signal light source, and adjustable range can be from
Several GHz to several THz.
The suitable modulation depth is obtained by adjusting the relative power output of pump light source and signal optical source, big
It is small to be based on Analysis signal-to-noise ratio (SNR), with frequency interval, pump light source and signal source general power, the abbe number and nonlinear factor of optical fiber
Selection it is related.
The optical fiber is single mode optical fiber, and the abbe number of optical fiber, nonlinear factor and core diameter can be with designed, designeds.
The pump wavelength is located at the anomalous dispersion region of first order optical fiber.
It is an advantage of the invention that high-strength by selecting suitable modulating frequency and modulation depth to be obtained at first order optical fiber
Degree stablizes the optics distorted wave generated, then optics distorted wave is administered in the double zero dispersion optical fiber in the second level, by changing second
The position of grade fiber zero dispersion point, converts optics distorted wave to the form of base rank orphan or dispersive wave, to be had
The super continuous spectrums of different bandwidth range and flatness.This method can reduce optics distorted wave to the normal work of fibre system well
The harmful effect of work, while generating the super continuous spectrums that bandwidth range is big and flatness is good.
The features of the present invention and performance are described in further details with reference to the accompanying drawings and examples, and constitute this explanation
A part for book.
Description of the drawings
Fig. 1 is the structure composition schematic diagram of the 1st embodiment of the invention.
Fig. 2 is the structure composition schematic diagram of the 2nd embodiment of the invention.
Specific implementation mode
It elaborates to the present invention below in conjunction with drawings and examples, but the protection model of the present invention should not be limited with this
It encloses.
Embodiment 1：
As shown in Figure 1：The present embodiment includes：
The fabulous laser of two duplicate monochromaticjty, output wavelength is 1060nm under 25 DEG C water cool conditions,
Output pulse width is 500fs.One is used as pump light source 1, water cooling temperature to control at 25 degrees Celsius, and output power is adjusted to 100W；Separately
One is used as signal optical source 2, water cooling temperature to be gradually risen from 25 degree, and until obtaining suitable frequency interval, output power is adjusted to
10W.One photo-coupler 3, for pump light and signal light beat frequency to be generated the continuous light of modulation and inject cascaded optical fiber.
Cascaded optical fiber is made of two-stage optical fiber, and first order optical fiber is single zero dispersion point photonic crystal fiber optical fiber 4, the second level
Optical fiber is double zero dispersion points photonic crystal fiber 5.The zero dispersion point position of single zero dispersion point optical fiber PCF1 is 1055nm, dispersion system
Number is β2=-0.820ps2/ km, β3=6.87e-2ps3/ km, β4=-9.29e-5ps4/ km, β5=2.45e-7ps5/ km, β6
=-9.79e-10ps6/ km, β7=3.95e-12ps7/ km, β8=-1.12e-14ps8/ km, β9=1.90e-14ps9/ km, β10
=-1.51e-20ps10/km.Nonlinear factor is 0.015W-1km-1.By selecting different optical fiber PCF2 and PCF3, change the
The zero dispersion position of two level optical fiber can obtain the super continuous spectrums with different bandwidth range and flatness.When second level photon
When crystal optical fibre is PCF2, optics distorted wave is converted into the form of base rank orphan and red shift dispersive wave, can obtain at this time
The super continuous spectrums more widened are obtained, the position of two zero dispersion points of the optical fiber is 1053nm and 1289nm, abbe number β2=-
0.820ps2/ km, β3=6.87e-2ps3/ km, β4=4.51e-4ps4/ km, nonlinear factor 0.015W-1km-1.When second
When grade photonic crystal fiber is PCF3, optics distorted wave and base rank orphan are converted into the form of dispersive wave, at this time may be used
To obtain more smooth super continuous spectrums, two zero dispersion points position of the optical fiber is 1054nm and 1150nm, and abbe number is
β2=-0.820ps2/ km, β3=6.87e-2ps3/ km, β4=2.183e-5ps4/ km, nonlinear factor 0.015W-1km-1。
The super continuous spectrums that one spectroanalysis instrument 6 is generated as monitoring.
Embodiment 2：
As shown in Fig. 2, the present embodiment and the difference of embodiment 1 are：
Coupling is two lenticular lenses, and one is used as collimation lens 3, one to be used as condenser lens 4.
Cascaded optical fiber is single mode optical fiber, zero dispersion point position and nonlinear factor and corresponding photonic crystal fiber
Unanimously.
Claims (6)
1. a kind of method for administering optics distorted wave by two-stage cascade optical fiber to obtain the super continuous spectrums of controllability.Its
It is characterized in that this method：The stability that optics distorted wave generates is decided by modulating frequency；The intensity of optics distorted wave is decided by adjust
Depth processed and fiber lengths；Optics distorted wave results from first order list zero dispersion optical fiber；Optics distorted wave is administered in second
In the double zero dispersion optical fiber of grade；Light source is two identical monochromaticjty laser light sources, and one as pump light source (1), a conduct
Signal optical source (2), the wherein output wavelength of light source (1) are located at the anomalous dispersion region of first order optical fiber.
2. one kind according to claim 1 administers optics distorted wave to obtain controllability by two-stage cascade optical fiber
Super continuous spectrums method, it is characterised in that the difference that the modulating frequency is light source 2 with the frequency of light source 1, value are preferred
It is the 50%~55% of the maximum gain frequency values of the modulational instability gain spectral of first order single mode optical fiber.
3. one kind according to claim 1 administers optics distorted wave to obtain controllability by two-stage cascade optical fiber
Super continuous spectrums method, it is characterised in that the adjusting of modulating frequency is realized by the output wavelength of Regulate signal light source (2)；
The adjusting of modulation depth is realized by adjusting the output intensity of pump light source (1) and signal optical source (2).
4. one kind according to claim 1 administers optics distorted wave to obtain controllability by two-stage cascade optical fiber
Super continuous spectrums method, it is characterised in that the pulsewidth of the light source 1 and light source 2 is total in subpicosecond magnitude or picosecond magnitude
Peak power output is not more than 300W.
5. one kind according to claim 1 administers optics distorted wave to obtain controllability by two-stage cascade optical fiber
Super continuous spectrums method, it is characterised in that the output wavelength of the light source 1 and light source 2 ranging from visible light wave range, communication
Wave band or middle infrared band.
6. one kind according to claim 1 administers optics distorted wave to obtain controllability by two-stage cascade optical fiber
Super continuous spectrums method, it is characterised in that the second level can double zero colors of the selective cascade with different zero dispersion point positions
Astigmatism is fine so that optics distorted wave is converted into base rank orphan form or dispersion waveshape, has different bandwidth to obtain
The super continuous spectrums of range and flatness.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114003847A (en) * | 2021-09-24 | 2022-02-01 | 大连理工大学 | Generation modulation method and spectrum correction method for malformed wave |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201689244U (en) * | 2010-04-16 | 2010-12-29 | 深圳大学 | Supercontinuum generating device |
| CN105048267A (en) * | 2015-09-10 | 2015-11-11 | 电子科技大学 | Intermediate infrared super-continuum spectrum laser light source |
| CN105048259A (en) * | 2015-07-28 | 2015-11-11 | 湖南大学 | Method for selectively exciting super-continuum spectrum |
| US20160170136A1 (en) * | 2013-07-10 | 2016-06-16 | Nkt Photonics A/S | Microstructured optical fiber, supercontinuum light source comprising microstructured optical fiber and use of such light source |
-
2017
- 2017-03-15 CN CN201710153878.2A patent/CN108628056A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201689244U (en) * | 2010-04-16 | 2010-12-29 | 深圳大学 | Supercontinuum generating device |
| US20160170136A1 (en) * | 2013-07-10 | 2016-06-16 | Nkt Photonics A/S | Microstructured optical fiber, supercontinuum light source comprising microstructured optical fiber and use of such light source |
| CN105048259A (en) * | 2015-07-28 | 2015-11-11 | 湖南大学 | Method for selectively exciting super-continuum spectrum |
| CN105048267A (en) * | 2015-09-10 | 2015-11-11 | 电子科技大学 | Intermediate infrared super-continuum spectrum laser light source |
Non-Patent Citations (1)
| Title |
|---|
| 王威彬 等: "光子晶体光纤超连续谱产生过程中色散波的孤子俘获研究", 《物理学报》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114003847A (en) * | 2021-09-24 | 2022-02-01 | 大连理工大学 | Generation modulation method and spectrum correction method for malformed wave |
| CN114003847B (en) * | 2021-09-24 | 2024-04-30 | 大连理工大学 | Method for generating and modulating malformed wave and method for correcting spectrum |
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Application publication date: 20181009 |