CN111258055A - Light-operated photoswitch - Google Patents
Light-operated photoswitch Download PDFInfo
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- CN111258055A CN111258055A CN202010089288.XA CN202010089288A CN111258055A CN 111258055 A CN111258055 A CN 111258055A CN 202010089288 A CN202010089288 A CN 202010089288A CN 111258055 A CN111258055 A CN 111258055A
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- input terminal
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- control light
- graphene sheet
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/02—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the intensity of light
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- Optics & Photonics (AREA)
- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
Abstract
The invention discloses a light-operated photoswitch which comprises a magnetic base, a notched graphene sheet and a driving light source, wherein the graphene sheet is arranged on the magnetic base in a suspending manner under the action of a magnetic field, and the driving light source for driving the graphene sheet to move annularly is arranged on the graphene sheet. The invention has the beneficial effects that: through control light irradiation, change graphite alkene piece magnetic polarization direction and deflect to rotate under the effect in magnetic field, make by the regulation and control light pass through or not pass through the opening, in order to realize the modulation to controlled light, this kind of light-operated photoswitch can realize the modulation when ultraviolet to infrared spectrum within range, and modulation speed is fast, and modulation efficiency is high.
Description
Technical Field
The invention relates to the technical field of light control, in particular to a light-operated light switch.
Background
The high-speed optical control optical switch has wide application in optical integrated circuits, optical computing, all-optical circuits and optical interconnection. The traditional light-operated switch mainly utilizes the nonlinear effect of light materials, namely, the control light with strong light intensity is utilized to change the refractive index of the light materials, so that the transmissivity or reflectivity of the controlled light is regulated and controlled, and the control of the light on the light is realized. The method has extremely high modulation speed, but needs strong control light intensity, can only work near a specific wavelength, and has narrow modulation wavelength range.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a light-operated light switch, which changes the magnetic polarization direction deflection of a graphene sheet by controlling light irradiation, so that the graphene sheet rotates under the action of a magnetic field, and modulated light passes through or does not pass through a gap to realize modulation of the controlled light.
The technical scheme for solving the technical problems is as follows: the magnetic field type graphene sheet comprises a magnetic base, a notched graphene sheet and a driving light source, wherein the graphene sheet is arranged on the magnetic base in a suspending manner under the action of a magnetic field, and the driving light source used for driving the graphene sheet to move annularly is arranged on the graphene sheet.
The invention has the beneficial effects that: through the control light irradiation, the carrier concentration and the temperature of the graphene sheet are changed, the magnetic polarization direction of the graphene sheet deflects, so that the graphene sheet rotates and precesses under the action of a magnetic field, the modulated light passes through or does not pass through the notch, and the modulation of the controlled light is realized.
On the basis of the technical scheme, the invention can be further improved as follows.
Further, the graphene sheet is single-layer or multi-layer graphene. .
The further scheme has the advantages that the single-layer graphene is low in mass density per unit area, large in motion acceleration, high in modulation speed, slightly high in density of the multi-layer graphene, higher in light absorption and higher in modulation rate. In addition, the absorptivity of the single-layer or multi-layer graphene in ultraviolet to infrared bands is basically consistent, and the working band is wide.
On the basis of the technical scheme, the invention can be further improved as follows.
Further, the driving light source comprises a first control light input terminal and a second control light input terminal, the first control light input terminal and the second control light input terminal are distributed on two sides of the notch, and the first control light input terminal and the second control light input terminal work alternately.
The beneficial effect of adopting above-mentioned further scheme is that the rotation of control graphite alkene piece that can be convenient, including clockwise rotation, anticlockwise rotation and stop rotating.
On the basis of the scheme, the invention can be further improved as follows.
Further, the first control optical input terminal and the second control optical input terminal are optical fibers.
The further scheme has the advantages of small optical fiber size and high transmission optical power. The coupling efficiency of light and the graphene block can be improved.
On the basis of the scheme, the invention can be further improved as follows.
Further, the first control light input terminal and the second control light input terminal are obliquely incident.
The beneficial effect of adopting above-mentioned further scheme is that oblique incidence can effectual reinforcing graphite alkene piece the light absorption, reduces the regulation and control light intensity, increases the modulation range of being regulated and control light.
On the basis of the scheme, the invention can be further improved as follows.
Further, the incident angles of the first control light input terminal and the second control light input terminal are both 15-85 °.
The beneficial effects of adopting the above-mentioned further scheme are that the light absorption of reinforcing graphite alkene piece reduces the regulation and control light intensity, increases the modulation range of being regulated and control light.
Drawings
FIG. 1 is a schematic structural view of the present invention;
in the drawings, the components represented by the respective reference numerals are listed below:
1. magnetic base, 2, graphene sheet, 3, first control light input terminal, 4, second control light input terminal, 5, controlled light input terminal.
Detailed Description
In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the box or the element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; the connection can be mechanical connection or circuit connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Example 1:
as shown in fig. 1, in the present embodiment, a photo-controlled optical switch includes a magnetic base 1, a graphene sheet 2 having a notch, and a driving light source, where the notch penetrates through upper and lower surfaces of the graphene sheet 2. The graphene sheet 2 is arranged on the magnetic base 1 in a suspending manner under the action of a magnetic field, and a driving light source for driving the graphene sheet 2 to move annularly is arranged on the graphene sheet 2. The driving light source comprises a first control light input terminal 3 and a second control light input terminal 4, and the first control light input terminal 3 and the second control light input terminal 4 are distributed on two sides of the notch.
The magnetic base 1 is a Ru Fe B block material with a smooth surface, the diameter of the graphene sheet 2 is 20 micrometers, the width of a gap is 2 micrometers, the depth of the gap is 1 micrometer, the first control light input terminal 3 and the second control light input terminal 4 are optical fibers, the size of the tip end of the optical fiber is 0.5 micrometer, and the optical fiber is generated by a laser diode through the control light input terminal 5. At the initial time, the notch coincides with the laser diode exit port, and is efficiently reflected by the magnetic base 1 via the controlled light input terminal 5. When an optical pulse with energy of 20pJ is input into the first control light input terminal 3, the graphene sheet 2 rotates under the action of a magnetic field, the notch is not overlapped with the exit of the laser diode, most of light is absorbed, and the reflected exit light is small. After a period of time, when the second control light input terminal 4 inputs a light pulse with energy of 20pJ, the graphene sheet 2 rotates reversely under the action of the magnetic field, and after a period of time, the notch and the laser diode are overlapped again, and the controlled light input terminal 5 is reflected by the magneto-optical base 1 with high efficiency.
The preferable control light input terminal is incident to the graphene sheet 2 at an angle of 60 degrees, and the control light input terminal 5 is incident to the graphene sheet at an angle of 45 degrees, so that the absorption rate of graphene and the reflectivity of a smooth Ru iron boron block material can be greatly improved, and the utilization efficiency of control light and the modulation amplitude of control light are improved.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent replacements, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A light-operated optical switch, characterized by: the magnetic graphene device comprises a magnetic base (1), a notched graphene sheet (2) and a driving light source, wherein the graphene sheet (2) is arranged on the magnetic base (1) in a suspending manner under the action of a magnetic field, and the driving light source used for driving the graphene sheet (2) to move annularly is arranged on the graphene sheet (2).
2. A light-operated optical switch as defined in claim 1, wherein: the graphene sheet (2) is single-layer or multi-layer graphene.
3. A light-operated optical switch as defined in claim 1, wherein: the driving light source comprises a first control light input terminal (3) and a second control light input terminal (4), the first control light input terminal (3) and the second control light input terminal (4) are distributed on two sides of the notch, and the first control light input terminal (3) and the second control light input terminal (4) work alternately.
4. A light-operated optical switch as defined in claim 3, wherein: the first control light input terminal (3) and the second control light input terminal (4) are optical fibers.
5. A light-operated optical switch as defined in claim 4, wherein: the first control light input terminal (3) and the second control light input terminal (4) are obliquely incident.
6. A light-operated optical switch as defined in claim 5, wherein: the incidence angles of the first control light input terminal (3) and the second control light input terminal (4) are both 15-85 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010089288.XA CN111258055B (en) | 2020-02-12 | 2020-02-12 | Light-operated photoswitch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010089288.XA CN111258055B (en) | 2020-02-12 | 2020-02-12 | Light-operated photoswitch |
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| Publication Number | Publication Date |
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| CN111258055A true CN111258055A (en) | 2020-06-09 |
| CN111258055B CN111258055B (en) | 2022-05-20 |
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| CN202010089288.XA Active CN111258055B (en) | 2020-02-12 | 2020-02-12 | Light-operated photoswitch |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114726256A (en) * | 2022-02-25 | 2022-07-08 | 电子科技大学 | Device and method for driving magnetic suspension graphene ship to move in long range by utilizing laser |
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| CN101355230A (en) * | 2008-09-11 | 2009-01-28 | 福州高意通讯有限公司 | Method for implementing optical switch |
| US7555177B1 (en) * | 2006-04-12 | 2009-06-30 | Iowa State University Research Foundation, Inc. | All fiber magneto-optic on-off switch for networking applications |
| CN102495480A (en) * | 2011-12-07 | 2012-06-13 | 电子科技大学 | Electro-optic modulator with graphene and micronano optical fiber composite structure |
| CN102662254A (en) * | 2012-05-02 | 2012-09-12 | 浙江大学 | Micro-ring optical switch based on electric absorption characteristics of graphene |
| CN206788417U (en) * | 2017-05-02 | 2017-12-22 | 南京大学 | A kind of photoswitch |
| CN109375390A (en) * | 2018-12-26 | 2019-02-22 | 台州学院 | A kind of electrooptic modulator based on graphene |
| CN110221363A (en) * | 2019-05-23 | 2019-09-10 | 深圳市华星光电技术有限公司 | Preparation method, optical diaphragm and the display panel of optical diaphragm |
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2020
- 2020-02-12 CN CN202010089288.XA patent/CN111258055B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7555177B1 (en) * | 2006-04-12 | 2009-06-30 | Iowa State University Research Foundation, Inc. | All fiber magneto-optic on-off switch for networking applications |
| CN101355230A (en) * | 2008-09-11 | 2009-01-28 | 福州高意通讯有限公司 | Method for implementing optical switch |
| CN102495480A (en) * | 2011-12-07 | 2012-06-13 | 电子科技大学 | Electro-optic modulator with graphene and micronano optical fiber composite structure |
| CN102662254A (en) * | 2012-05-02 | 2012-09-12 | 浙江大学 | Micro-ring optical switch based on electric absorption characteristics of graphene |
| CN206788417U (en) * | 2017-05-02 | 2017-12-22 | 南京大学 | A kind of photoswitch |
| CN109375390A (en) * | 2018-12-26 | 2019-02-22 | 台州学院 | A kind of electrooptic modulator based on graphene |
| CN110221363A (en) * | 2019-05-23 | 2019-09-10 | 深圳市华星光电技术有限公司 | Preparation method, optical diaphragm and the display panel of optical diaphragm |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114726256A (en) * | 2022-02-25 | 2022-07-08 | 电子科技大学 | Device and method for driving magnetic suspension graphene ship to move in long range by utilizing laser |
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| CN111258055B (en) | 2022-05-20 |
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