CN103472656B - A kind of All Optical Wave Converter part based on topological insulator - Google Patents
A kind of All Optical Wave Converter part based on topological insulator Download PDFInfo
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- CN103472656B CN103472656B CN201310443132.7A CN201310443132A CN103472656B CN 103472656 B CN103472656 B CN 103472656B CN 201310443132 A CN201310443132 A CN 201310443132A CN 103472656 B CN103472656 B CN 103472656B
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- 239000012212 insulator Substances 0.000 title claims abstract description 56
- 230000003287 optical effect Effects 0.000 title claims abstract description 33
- 239000013307 optical fiber Substances 0.000 claims abstract description 37
- 239000000835 fiber Substances 0.000 claims abstract description 31
- 238000000034 method Methods 0.000 claims description 12
- 239000002105 nanoparticle Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 8
- 230000006698 induction Effects 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000006243 chemical reaction Methods 0.000 description 12
- 238000004891 communication Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 229910021389 graphene Inorganic materials 0.000 description 4
- 238000012545 processing Methods 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002041 carbon nanotube Substances 0.000 description 1
- 229910021393 carbon nanotube Inorganic materials 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000009022 nonlinear effect Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
Abstract
The invention discloses a kind of All Optical Wave Converter part based on topological insulator, comprise optical fiber, any one section of described optical fiber is made into D shape optical fiber or tapered fiber; The described plane side of D shape optical fiber or the waist cone of tapered fiber are provided with topological insulator layer; Described topological insulator layer thickness is 10 ~ 50nm.All Optical Wave Converter part structure of the present invention is simple, and manufacture craft is simple, and noise figure is low, is not subject to the impact of environment temperature, good stability.
Description
Technical field
The present invention relates to optic communication device, particularly a kind of All Optical Wave Converter part based on topological insulator, for All Optical Wavelength Conversion.
Background technology
In transfer process that all-optical communication network can be broken through " light-electrical-optical ", electronic bottleneck is to the restriction of speed, makes full use of the enormous bandwidth resource of optical fiber, is the communication network of optical communication dream always.All-optical signal processing technology is the key realizing all-optical communication network, relates to the many aspects such as transmission, exchange, route, access and business processing, and concrete technology contains All Optical Wavelength Conversion, full light ultra-broadband signal produces etc.Wherein All-Optical Wavelength Conversion Techniques plays key effect in all-optical communication network.Wavelength shifter can realize transmission information from a wavelength to the conversion of another wavelength; Can realize the recycling of wavelength, forming can the wavelength division multiplexed network of arbitrary extension.
At present, the main flow implementation of wavelength conversion technology is the nonlinear effect in application nonlinear device, and mainly comprise and utilize XGM (XGM), Cross-phase Modulation (XPM) and four-wave mixing (FWM) realize All Optical Wavelength Conversion.But XGM and these two kinds of wavelength convert modes of Cross-phase Modulation are only applicable to the signal of intensity modulated, so can only reach limited transparent, can not realize strictly transparent.Wherein, All-Optical Wavelength Conversion Techniques based on four-wave mixing effect mainly utilizes the Third-order nonlinearity in nonlinear optics, can be strictly transparent to the amplitude of signal, frequency and phase place, therefore the form of wavelength convert and signal can be made to have nothing to do, be a kind of All Optical Wavelength Conversion scheme of very attractive.
In the last few years, semiconductor optical amplifier (SOA), as typical nonlinear device, was widely used in all-optical signal processing, utilized the four-wave mixing effect of SOA to realize All Optical Wavelength Conversion etc.But the coupling loss of SOA and optical fiber is too large, noise figure is high and be subject to the impact of environment temperature, less stable.A large amount of report utilizes the nonlinear device of carbon nano-tube and grapheme material to realize wavelength convert etc. recently, and successfully will be applied in optical communication system.Grapheme material has that preparation is simple, cost is low, and the advantages such as high non-linearity, are easy to realize the industrialization of Graphene nonlinear device.But grapheme material easily damages, less stable, is unfavorable for working long hours of device.
Topological insulator is as a kind of material with novel Quantum Properties, and Typical Representative is Bi
2te
3, Bi
2se
3and Sb
2te
3.The surface state of topological insulator is similar to Graphene, and its dispersion relation can be described by Dirac equation.Similar band structure also shows that topological insulator has the broadband nonlinear characteristic similar with Graphene.Meanwhile, relative to Graphene, topological insulator has larger depth of modulation and higher stability.
Summary of the invention
Technical matters to be solved by this invention is, not enough for prior art, there is provided that a kind of structure is simple, manufacture craft is simply based on the All Optical Wave Converter part of topological insulator, utilize evanescent wave and the effect of topological insulator nonlinear interaction body, produce four-wave mixing, thus realize All Optical Wavelength Conversion, solve SOA high and be subject to the impact of environment temperature, the problem of less stable as noise figure during nonlinear device.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is: a kind of All Optical Wave Converter part based on topological insulator, comprises optical fiber, and any one section of described optical fiber is made into D shape optical fiber or tapered fiber; The described plane side of D shape optical fiber or the waist cone of tapered fiber are provided with topological insulator layer; Described topological insulator layer thickness is 10 ~ 50nm; Described D shape fiber lengths is 30 ~ 40mm; Described tapered fiber length is 15 ~ 20mm.
Described topological insulator layer is topological insulator nanometer sheet, described topological insulator nanometer sheet is deposited in the plane side of described D shape optical fiber or the waist cone of tapered fiber by the method for optical induction, or is sprayed in the plane side of described D shape optical fiber or the waist cone of tapered fiber.
Described topological insulator layer is topological insulator nanoparticle, described topological insulator nanoparticle is sprayed in the plane side of described D shape optical fiber or the waist cone of tapered fiber, or is deposited in the plane side of described D shape optical fiber or the waist cone of tapered fiber by the method for optical induction.
Described topological insulator layer optimal thickness is 10 ~ 20nm, ensures that conversion efficiency is high.
Described topological insulator layer material is Bi
2se
3, Bi
2te
3, Sb
2te
3in one.
Described optical fiber is single-mode fiber.
Compared with prior art, the beneficial effect that the present invention has is: the present invention utilizes topological insulator nanometer sheet/nanoparticle to have the feature of high non-linearity, designs the All Optical Wave Converter part based on topological insulator.Topological insulator is transferred to D shape fibre profile or tapered fiber draws the conical surface, acts on when being transmitted by evanescent wave and topological insulator layer, produce four-wave mixing effect and realize All Optical Wavelength Conversion; All Optical Wave Converter part of the present invention, carries out owing to only adopting general single mode fiber polishing or drawing cone, and structure is simple, and topological insulator nanoparticle adopts the method for photoinduction or spraying to be transferred on optical fiber, and manufacture craft is simple.And topological insulator material has large optical nonlinearity characteristic and higher damage threshold, it is low that utilize evanescent wave and topological insulator material effect to produce All Optical Wave Converter part that four-wave mixing effect makes has noise figure, be not subject to the impact of environment temperature, the feature of good stability.
Accompanying drawing explanation
Fig. 1 is the skeleton view of the first embodiment of the present invention;
Fig. 2 is the front view of the second embodiment of the present invention.
Embodiment
As shown in Figure 1, the first embodiment of the present invention comprises optical fiber 1, and the middle part of described optical fiber 1 is made into D shape optical fiber 2; The plane side of described D shape optical fiber 2 is provided with topological insulator layer 4; Described topological insulator layer 4 thickness is 10 ~ 50nm; Described D shape optical fiber 2 length is 30 ~ 40mm.
In the first embodiment, topological insulator layer 4 can adopt topological insulator nanometer sheet/nanoparticle, is deposited on the section (plane side) of D shape optical fiber 4 by the method for optical induction; Or adopt the method for spraying to be sprayed on by topological insulator nanometer sheet/nanoparticle on the section (plane side) of D shape optical fiber 4.
As shown in Figure 2, the second embodiment optical fiber 1 of the present invention, the middle part of described optical fiber 1 is made into tapered fiber 3; The waist cone of described tapered fiber 3 is provided with topological insulator layer 4; Described topological insulator layer 4 thickness is 10 ~ 50nm; Described tapered fiber 3 length is 15 ~ 20mm.
In the second embodiment, topological insulator layer 4 can adopt topological insulator nanometer sheet/nanoparticle, is deposited in the waist cone of tapered fiber 3 by the method for optical induction; Or adopt the method for spraying to be sprayed in the waist cone of tapered fiber 3 by topological insulator nanometer sheet/nanoparticle.
The optical fiber used in the present invention is single-mode fiber, and its core diameter is sub-wavelength, and D shape optical fiber and tapered fiber have stronger evanescent wave.Wherein the minimum place of the core diameter of tapered fiber is less than 2 microns.
Claims (6)
1. based on an All Optical Wave Converter part for topological insulator, comprise optical fiber (1), it is characterized in that, any one section of described optical fiber (1) is made into D shape optical fiber (2) or tapered fiber (3); The plane side of described D shape optical fiber (2) or the waist cone of tapered fiber (3) are provided with topological insulator layer (4); Described topological insulator layer (4) thickness is 10 ~ 50nm; Described D shape optical fiber (2) length is 30 ~ 40mm; Described tapered fiber (3) length is 15 ~ 20mm, and the minimum place of core diameter of tapered fiber is less than 2 microns.
2. the All Optical Wave Converter part based on topological insulator according to claim 1, it is characterized in that, described topological insulator layer (4) is topological insulator nanometer sheet, described topological insulator nanometer sheet is deposited in the plane side of described D shape optical fiber (2) or the waist cone of tapered fiber (3) by the method for optical induction, or is sprayed in the plane side of described D shape optical fiber (2) or the waist cone of tapered fiber (3).
3. the All Optical Wave Converter part based on topological insulator according to claim 1, it is characterized in that, described topological insulator layer (4) is topological insulator nanoparticle, described topological insulator nanoparticle is sprayed in the plane side of described D shape optical fiber (2) or the waist cone of tapered fiber (3), or is deposited in the plane side of described D shape optical fiber (2) or the waist cone of tapered fiber (3) by the method for optical induction.
4. according to the All Optical Wave Converter part based on topological insulator one of claims 1 to 3 Suo Shu, it is characterized in that, described topological insulator layer (4) thickness is 10 ~ 20nm.
5. the All Optical Wave Converter part based on topological insulator according to claim 4, is characterized in that, described topological insulator layer (4) material is Bi
2se
3, Bi
2te
3, Sb
2te
3in one.
6. the All Optical Wave Converter part based on topological insulator according to claim 5, is characterized in that, described optical fiber (1) is single-mode fiber.
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| CN201310443132.7A CN103472656B (en) | 2013-09-26 | 2013-09-26 | A kind of All Optical Wave Converter part based on topological insulator |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105044928B (en) * | 2015-04-22 | 2018-04-20 | 西北工业大学 | A kind of optical drive all -fiber phase-shifter of graphene auxiliary |
| US10371910B2 (en) | 2017-12-22 | 2019-08-06 | At&T Intellectual Property I, L.P. | Optical communications cables utilizing topological insulators as optical fiber cores |
| CN113238308B (en) * | 2021-05-07 | 2022-09-27 | 北京华光浩阳科技有限公司 | Wavelength conversion device based on topological insulator |
| CN113625502B (en) * | 2021-07-23 | 2023-01-06 | 长春理工大学 | High conversion efficiency 2 μm wavelength converter based on graphene composite micro-nano fiber |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101620293A (en) * | 2008-07-01 | 2010-01-06 | 湖南大学 | Single mode fiber saturable absorber |
| CN103000803A (en) * | 2012-12-21 | 2013-03-27 | 清华大学 | Electrical device |
| CN103151695A (en) * | 2013-03-08 | 2013-06-12 | 山东大学 | Topological insulator pulse modulator and pulse-modulated laser for all-solid-state laser light |
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| US9024415B2 (en) * | 2010-12-07 | 2015-05-05 | The Board Of Trustees Of The Leland Stanford Junior University | Electrical and optical devices incorporating topological materials including topological insulators |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101620293A (en) * | 2008-07-01 | 2010-01-06 | 湖南大学 | Single mode fiber saturable absorber |
| CN103000803A (en) * | 2012-12-21 | 2013-03-27 | 清华大学 | Electrical device |
| CN103151695A (en) * | 2013-03-08 | 2013-06-12 | 山东大学 | Topological insulator pulse modulator and pulse-modulated laser for all-solid-state laser light |
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