CN111142192A - Method for realizing high-speed optical switch response and ultrahigh-speed optical modulation optical switch device - Google Patents
Method for realizing high-speed optical switch response and ultrahigh-speed optical modulation optical switch device Download PDFInfo
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- CN111142192A CN111142192A CN201911362769.7A CN201911362769A CN111142192A CN 111142192 A CN111142192 A CN 111142192A CN 201911362769 A CN201911362769 A CN 201911362769A CN 111142192 A CN111142192 A CN 111142192A
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- 230000003287 optical effect Effects 0.000 title claims abstract description 62
- 238000000034 method Methods 0.000 title claims abstract description 13
- 239000007788 liquid Substances 0.000 claims abstract description 5
- 239000013307 optical fiber Substances 0.000 claims description 17
- 230000000694 effects Effects 0.000 claims description 12
- 239000010453 quartz Substances 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 230000000704 physical effect Effects 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 description 5
- 230000004075 alteration Effects 0.000 description 1
- 238000013473 artificial intelligence Methods 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/35—Optical coupling means having switching means
- G02B6/354—Switching arrangements, i.e. number of input/output ports and interconnection types
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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
- G02F1/01—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 intensity, phase, polarisation or colour
- G02F1/21—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 intensity, phase, polarisation or colour by interference
-
- 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
- G02F1/01—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 intensity, phase, polarisation or colour
- G02F1/21—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 intensity, phase, polarisation or colour by interference
- G02F1/212—Mach-Zehnder type
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- Physics & Mathematics (AREA)
- 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 provides a method for realizing high-speed optical switch response and an ultra-high-speed optical modulation optical switch device. A large number of physical effects are involved in the laser filamentation process, the light silk generation area is accompanied by refractive index modulation, the response speed of the refractive index modulation is related to the pulse width and the power of the ultrafast laser, and the response frequency of the light silk generated by liquid to the refractive index modulation can reach gigahertz when the peak power of the ultrafast laser reaches a certain threshold value. The ultrahigh-speed refractive index modulation is applied to an optical modulation optical switch, and ultrahigh-speed optical switch response is realized.
Description
Technical Field
The invention relates to an optical switch technology, in particular to a method for realizing high-speed optical switch response and an ultra-high-speed optical modulation optical switch device.
Background
With the advent of the 5G era, cloud computing, development of the internet of things, and the rise of artificial intelligence, a dynamic data exchange technology with high bandwidth and large data transmission capacity will be widely used in high-performance data-intensive computing [ prior art 1: kwack M J, Tanemura T, Higo a, et al opt express.20(27),28734-41 (2012). The main interconnection mode of the network center and the data center is mainly electrical interconnection, and the electrical interconnection has the defects of long delay time, large power consumption, limited transmission rate and distance and the like, and the optical interconnection can break through the bottlenecks to realize high-speed, safe and low-power-consumption data transmission and exchange.
Among them, the optical switch is a key device for realizing optical interconnection, and is a device capable of performing interconversion or logic operation on optical signals in an optical transmission line or an integrated optical circuit. Conventional optical switches are generally classified into mechanical optical switches, electro-optical switches, thermo-optical switches, and liquid crystal optical switches.
Disclosure of Invention
The invention aims to provide a method for realizing high-speed optical on-off response and an ultrahigh-speed optical modulation optical switching device.
In order to achieve the above purpose, the present invention provides a method for realizing high-speed optical on-off response, which uses high-power femtosecond laser to generate an optical fiber to modulate the phase of signal light in a single arm of a mach-zehnder interferometer, so that optical signals of two arms in the mach-zehnder interferometer generate interference, and achieves the effect of high-speed modulation of optical switch response by controlling the optical fiber effect generated by the high-power femtosecond laser.
Preferably, the method comprises the following steps:
step 1: fifty-to-fifty uniform splitting is performed on the signal light to form two arms of a Mach-Zehnder interferometer;
step 2: reflecting the signal light in one of the two arms to a light wire generating device, and coaxially modulating the signal light with a light wire area generated by high-power femtosecond laser;
and step 3: and combining the modulated signal light with the original signal light of the other arm of the two arms.
The invention also provides an ultra-high-speed light modulation optical switch device, which comprises a beam splitting prism, a beam combining prism, a dichroic mirror, a reflecting mirror and a light wire generating device;
the signal light enters the beam splitting prism for splitting to form two arms of the Mach-Zehnder interferometer, the signal light of one arm is reflected by the dichroic mirror to enter the optical fiber generating device to be modulated coaxially with an optical fiber area generated by high-power femtosecond laser, and the modulated signal light is reflected to one end of the beam combining prism by the reflector; and the other arm of signal light is incident to the other end of the beam combining prism, and the two paths of signal light interfere.
Preferably, the incidence of the signal light to the beam splitter prism performs fifty to fifty uniform beam splitting.
Preferably, the high-power femtosecond laser enters the optical filament generating device through filtering of the beam splitter prism.
Preferably, the light filament generating device is a quartz box containing liquid water.
Compared with the prior art, the invention has the advantages that: the invention provides a femtosecond fiber-based ultra-high-speed optical modulation optical switch device, which has a basic structure of a Mach-Zehnder interferometer, wherein an optical fiber generating device is arranged in an optical path of one arm of the Mach-Zehnder interferometer, high-power femtosecond laser is used for generating an optical fiber so as to modulate the phase of signal light in the single arm of the Mach-Zehnder interferometer, finally optical signals of two arms in the Mach-Zehnder interferometer generate interference, and the effect of modulating the optical switch at a high speed can be achieved by controlling the optical fiber effect generated by the high-power femtosecond laser.
Drawings
Fig. 1 is a schematic diagram of the overall structure of an ultra-high-speed optical modulation optical switching device in an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be further described below.
The invention provides a method for realizing high-speed optical on-off response, which uses high-power femtosecond laser to generate optical fibers to modulate the phase of signal light in a single arm of a Mach-Zehnder interferometer, so that optical signals of two arms in the Mach-Zehnder interferometer generate interference, and achieves the effect of high-speed modulation of optical switch response by controlling the optical fiber effect generated by the high-power femtosecond laser.
The principle is that the high-power pulse laser can overcome the distance that the diffraction effect propagates over a plurality of Rayleigh lengths by the self-focusing effect and the plasma defocusing effect of the laser in the transmission process to form the optical fiber. A large number of physical effects are involved in the laser filamentation process, the light silk generation area is accompanied by refractive index modulation, the response speed of the refractive index modulation is related to the pulse width and the power of the ultrafast laser, and the response frequency of the light silk generated by liquid to the refractive index modulation can reach gigahertz when the peak power of the ultrafast laser reaches a certain threshold value. The ultrahigh-speed refractive index modulation is applied to an optical modulation optical switch, and ultrahigh-speed optical switch response is realized.
As shown in fig. 1, the present invention further provides an ultra-high speed light modulation optical switch device, which includes a beam splitting prism 1, a beam combining prism 2, a dichroic mirror 4, a reflecting mirror 3 and a filament generating device 5;
the signal light enters the beam splitting prism 1 to be split to form two arms of the Mach-Zehnder interferometer, the signal light of one arm is reflected by the dichroic mirror 4 to enter the optical fiber generating device 5 to be modulated coaxially with an optical fiber area generated by high-power femtosecond laser, and the modulated signal light is reflected to one end of the beam combining prism 2 by the reflecting mirror 3; the other arm of signal light is incident to the other end of the beam combining prism 2, and the two paths of signal light interfere.
In this embodiment, the specific steps of implementing a high-speed optical on/off response by an ultra-high-speed optical modulation optical switching device are as follows:
the signal light in the upper arm of the Mach-Zehnder interferometer is reflected by the dichroic mirror 4, meanwhile, femtosecond laser with 1030 nanometer waveband power of 70 micro-coke is incident and penetrates through a quartz box filled with liquid water through the dichroic mirror 4, the laser pulse with high peak power is used for ionizing solution molecules through a multi-photon effect, the ionized electrons are accelerated by the back edge of the pulse, a plasma channel with the core diameter of about 50 micrometers is formed in the solution, and the signal light and the optical fiber generation area are coaxial, so that the phase modulation is carried out on the signal light.
The modulated signal light of the upper arm of the Mach-Zehnder interferometer is reflected to one end of the beam-combining prism 2, the signal light of the lower arm is incident to the other end of the beam-combining prism 2, and two paths of signal light are interfered.
The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any way. It will be understood by those skilled in the art that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (6)
1. A method for realizing high-speed optical on-off response is characterized in that high-power femtosecond laser is used for generating optical fibers to modulate the phase of signal light in a single arm of a Mach-Zehnder interferometer, so that optical signals of two arms in the Mach-Zehnder interferometer generate interference, and the effect of high-speed modulation of optical switch response is achieved by controlling the optical fiber effect generated by the high-power femtosecond laser.
2. The method of claim 1 for realizing high-speed optical switch response, comprising the steps of:
step 1: fifty-to-fifty uniform splitting is performed on the signal light to form two arms of a Mach-Zehnder interferometer;
step 2: reflecting the signal light in one of the two arms to a light wire generating device, and coaxially modulating the signal light with a light wire area generated by high-power femtosecond laser;
and step 3: and combining the modulated signal light with the original signal light of the other arm of the two arms.
3. An ultra-high speed optical modulation optical switching device for realizing the method for realizing high speed optical open response according to any one of claims 1 to 2, comprising a beam splitting prism, a beam combining prism, a dichroic mirror, a reflecting mirror and a filament generating device;
the signal light enters the beam splitting prism for splitting to form two arms of the Mach-Zehnder interferometer, the signal light of one arm is reflected by the dichroic mirror to enter the optical fiber generating device to be modulated coaxially with an optical fiber area generated by high-power femtosecond laser, and the modulated signal light is reflected to one end of the beam combining prism by the reflector; and the other arm of signal light is incident to the other end of the beam combining prism, and the two paths of signal light interfere.
4. An ultra-high speed optical modulating optical switching device as defined in claim 3 wherein the incidence of the signal light to the beam splitting prism performs fifty-to-fifty uniform beam splitting.
5. An ultra high speed optical modulating switch device as claimed in claim 3 wherein the high power femtosecond laser light is filtered by the beam splitter prism into the filament generating means.
6. An ultra high speed optical modulating optical switching device as claimed in claim 3 wherein the filament generating means is a quartz cell containing liquid water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911362769.7A CN111142192B (en) | 2019-12-26 | 2019-12-26 | Method for realizing high-speed optical switch response and ultrahigh-speed optical modulation optical switch device |
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| CN201911362769.7A CN111142192B (en) | 2019-12-26 | 2019-12-26 | Method for realizing high-speed optical switch response and ultrahigh-speed optical modulation optical switch device |
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| CN111142192A true CN111142192A (en) | 2020-05-12 |
| CN111142192B CN111142192B (en) | 2022-10-11 |
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Citations (7)
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|---|---|---|---|---|
| JP2003186067A (en) * | 2001-12-17 | 2003-07-03 | Fujitsu Ltd | Optical interferometer, all-optical switch, all-optical demultiplexer, all-optical pulse shaper that generates mode-locked laser oscillation |
| JP2004029152A (en) * | 2002-06-21 | 2004-01-29 | Toshiba Corp | Optical fiber light incidence method and device |
| CN1739059A (en) * | 2003-07-04 | 2006-02-22 | 日本电信电话株式会社 | Interferometer optical switch and variable optical attenuator |
| CN101902009A (en) * | 2010-06-28 | 2010-12-01 | 四川大学 | Method and device for modulating phase of controlled laser beam |
| CN106772819A (en) * | 2016-12-01 | 2017-05-31 | 南京邮电大学 | The interference-type all-optical switch of chalcogenide glass photonic crystal fiber 2 × 2 and control method |
| CN106772705A (en) * | 2017-01-22 | 2017-05-31 | 河北大学 | Produce the method with three kinds of solid modulating plasma photonic crystals of refractive index |
| CN109407354A (en) * | 2018-11-26 | 2019-03-01 | 杭州奕力科技有限公司 | A kind of tunable pulse broadening device of transmission-type monochromatic light grid multi-pass |
-
2019
- 2019-12-26 CN CN201911362769.7A patent/CN111142192B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003186067A (en) * | 2001-12-17 | 2003-07-03 | Fujitsu Ltd | Optical interferometer, all-optical switch, all-optical demultiplexer, all-optical pulse shaper that generates mode-locked laser oscillation |
| JP2004029152A (en) * | 2002-06-21 | 2004-01-29 | Toshiba Corp | Optical fiber light incidence method and device |
| CN1739059A (en) * | 2003-07-04 | 2006-02-22 | 日本电信电话株式会社 | Interferometer optical switch and variable optical attenuator |
| CN101902009A (en) * | 2010-06-28 | 2010-12-01 | 四川大学 | Method and device for modulating phase of controlled laser beam |
| CN106772819A (en) * | 2016-12-01 | 2017-05-31 | 南京邮电大学 | The interference-type all-optical switch of chalcogenide glass photonic crystal fiber 2 × 2 and control method |
| CN106772705A (en) * | 2017-01-22 | 2017-05-31 | 河北大学 | Produce the method with three kinds of solid modulating plasma photonic crystals of refractive index |
| CN109407354A (en) * | 2018-11-26 | 2019-03-01 | 杭州奕力科技有限公司 | A kind of tunable pulse broadening device of transmission-type monochromatic light grid multi-pass |
Non-Patent Citations (1)
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| CN111142192B (en) | 2022-10-11 |
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