CN103472656A - Topological insulator-based all-optical wavelength conversion device - Google Patents
Topological insulator-based all-optical wavelength conversion device Download PDFInfo
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- CN103472656A CN103472656A CN2013104431327A CN201310443132A CN103472656A CN 103472656 A CN103472656 A CN 103472656A CN 2013104431327 A CN2013104431327 A CN 2013104431327A CN 201310443132 A CN201310443132 A CN 201310443132A CN 103472656 A CN103472656 A CN 103472656A
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Abstract
The invention discloses a topological insulator-based all-optical wavelength conversion device. The topological insulator-based all-optical wavelength conversion device comprises an optical fiber, and any section of the optical fiber is manufactured into D-shaped optical fiber or tapering optical fiber; a topological insulator layer is arranged on one plane side of the D-shaped optical fiber or on the waist cone of the tapering optical fiber; the topological insulator layer is 10-50nm thick. The all-optical wavelength conversion device is simple in structure, easy in manufacturing technique, low in noise index, difficult of being influenced by environment temperature, and excellent in stability.
Description
Technical field
The present invention relates to optic communication device, a kind of All Optical Wave Converter part based on topological insulator particularly, for All Optical Wavelength Conversion.
Background technology
All-optical communication network can be broken through the restriction of electronic bottleneck to speed in " light-electrical-optical " transfer process, takes full advantage of the enormous bandwidth resource of optical fiber, is the communication network of optical communication dream always.Full light signal treatment technology is the key that realizes 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 is brought into play key effect in all-optical communication network.Wavelength shifter can be realized the conversion of transmission information from a wavelength to another wavelength; Can realize the recycling of wavelength, but form the wavelength division multiplexed network of arbitrary extension.
At present, the main flow implementation of wavelength conversion technology is the nonlinear effect in the application nonlinear device, mainly comprises and utilizes XGM (XGM), and Cross-phase Modulation (XPM) and four-wave mixing (FWM) realize All Optical Wavelength Conversion.But these two kinds of wavelength conversion regimes of XGM and 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 is mainly the third-order non-linear effect of utilizing in nonlinear optics, can be strictly transparent to amplitude, frequency and the phase place of signal, therefore can make the wavelength conversion irrelevant with the form of signal, it is 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 full light signal is processed, and 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 reports utilize the nonlinear device of carbon nano-tube and grapheme material to realize wavelength conversion 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, be easy to realize the industrialization of Graphene nonlinear device.But grapheme material easily damages, less stable, be unfavorable for working long hours of device.
The topology 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 topology insulator is similar to Graphene, and its dispersion relation can be described by Dirac equation.Similar band structure also shows that topological insulator has and the similar broadband of Graphene nonlinear characteristic.Simultaneously, with respect 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, for the prior art deficiency, the simply All Optical Wave Converter part based on topological insulator of a kind of simple in structure, manufacture craft is provided, utilize evanescent wave and the effect of topological insulator nonlinear interaction body, produce four-wave mixing, thereby realize All Optical Wavelength Conversion, while solving SOA as nonlinear device, noise figure is high and be subject to the impact of environment temperature, the problem of less stable.
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, comprise optical fiber, and any one section of described optical fiber is made into D shape optical fiber or tapered fiber; Plane one side of described 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, the method of described topological insulator nanometer sheet by optical induction is deposited on the waist cone of plane one side of described D shape optical fiber or tapered fiber, or is sprayed on the waist cone of plane one side of described D shape optical fiber or tapered fiber.
Described topological insulator layer is topological insulator nanoparticle, described topological insulator nanoparticle is sprayed on the waist cone of plane one side of described D shape optical fiber or tapered fiber, or the method by optical induction is deposited on the waist cone of plane one side of described D shape optical fiber or tapered fiber.
Described topological insulator layer optimal thickness is 10～20nm, guarantees that conversion efficiency is high.
Described topological insulator layer material is Bi
2se
3, Bi
2te
3, Sb
2te
3in a kind of.
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 characteristics of high non-linearity, the All Optical Wave Converter part of design based on topological insulator.Topological insulator is transferred to D shape fibre profile or tapered fiber draws the conical surface, effect during by evanescent wave and the transmission of topological insulator layer, produce four-wave mixing effect and realize All Optical Wavelength Conversion; All Optical Wave Converter part of the present invention, owing to only adopting general single mode fiber to be polished or drawing cone, simple in structure, 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 the All Optical Wave Converter part that utilizes evanescent wave and topological insulator material effect to produce the four-wave mixing effect making has noise figure, be not subject to the impact of environment temperature, the characteristics of good stability.
The accompanying drawing explanation
The skeleton view that Fig. 1 is the first embodiment of the present invention;
The front view that Fig. 2 is 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; Plane one side of described D shape optical fiber 2 is provided with topological insulator layer 4; Described topological insulator layer 4 thickness are 10～50nm; Described D shape optical fiber 2 length are 30 ~ 40mm.
In the first embodiment, topological insulator layer 4 can adopt topological insulator nanometer sheet/nanoparticle, by the method for optical induction, is deposited on the section (plane one side) of D shape optical fiber 4; Perhaps adopt the method for spraying that topological insulator nanometer sheet/nanoparticle is sprayed on the section (plane one side) to 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 are 10～50nm; Described tapered fiber 3 length are 15 ~ 20mm.
In the second embodiment, topological insulator layer 4 can adopt topological insulator nanometer sheet/nanoparticle, and the method by optical induction is deposited on the waist cone of tapered fiber 3; Perhaps adopt the method for spraying that topological insulator nanometer sheet/nanoparticle is sprayed on the waist cone of tapered fiber 3.
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. the All Optical Wave Converter part based on 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); Plane one 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 ~ 40 mm; Described tapered fiber (3) length is 15 ~ 20 mm.
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, the method of described topological insulator nanometer sheet by optical induction is deposited on the waist cone of plane one side of described D shape optical fiber (2) or tapered fiber (3), or is sprayed on the waist cone of plane one side of described D shape optical fiber (2) or 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 on the waist cone of plane one side of described D shape optical fiber (2) or tapered fiber (3), or the method by optical induction is deposited on the waist cone of plane one side of described D shape optical fiber (2) or tapered fiber (3).
4. according to the described All Optical Wave Converter part based on topological insulator of one of claim 1～3, 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 a kind of.
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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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105044928A (en) * | 2015-04-22 | 2015-11-11 | 西北工业大学 | Graphene-assisting optical drive all-optical-fiber phase shifter |
| 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 |
| CN113238308A (en) * | 2021-05-07 | 2021-08-10 | 李国强 | Wavelength conversion device based on topological insulator |
| CN113625502A (en) * | 2021-07-23 | 2021-11-09 | 长春理工大学 | High-conversion-efficiency 2-micrometer wavelength converter based on graphene composite micro-nano optical fiber |
Citations (4)
| 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 |
| US20120138887A1 (en) * | 2010-12-07 | 2012-06-07 | The Board Of Trustees Of The Leland Stanford Junior University | Electrical and Optical Devices Incorporating Topological Materials Including Topological Insulators |
| 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 |
-
2013
- 2013-09-26 CN CN201310443132.7A patent/CN103472656B/en not_active Expired - Fee Related
Patent Citations (4)
| 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 |
| US20120138887A1 (en) * | 2010-12-07 | 2012-06-07 | The Board Of Trustees Of The Leland Stanford Junior University | Electrical and Optical Devices Incorporating Topological Materials Including Topological Insulators |
| 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 |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105044928A (en) * | 2015-04-22 | 2015-11-11 | 西北工业大学 | Graphene-assisting optical drive all-optical-fiber phase shifter |
| 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 |
| CN113238308A (en) * | 2021-05-07 | 2021-08-10 | 李国强 | Wavelength conversion device based on topological insulator |
| 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 |
| CN113625502A (en) * | 2021-07-23 | 2021-11-09 | 长春理工大学 | High-conversion-efficiency 2-micrometer wavelength converter based on graphene composite micro-nano optical fiber |
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