CN105372851A - Optical fiber absorption enhanced electro-optical modulator based on graphene/molybdenum disulfide heterojunction - Google Patents
Optical fiber absorption enhanced electro-optical modulator based on graphene/molybdenum disulfide heterojunction Download PDFInfo
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- CN105372851A CN105372851A CN201510947953.3A CN201510947953A CN105372851A CN 105372851 A CN105372851 A CN 105372851A CN 201510947953 A CN201510947953 A CN 201510947953A CN 105372851 A CN105372851 A CN 105372851A
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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
- G02F1/011—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 in optical waveguides, not otherwise provided for in this subclass
- G02F1/0115—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 in optical waveguides, not otherwise provided for in this subclass in optical fibres
- G02F1/0118—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 in optical waveguides, not otherwise provided for in this subclass in optical fibres by controlling the evanescent coupling of light from a fibre into an active, e.g. electro-optic, overlay
Abstract
The invention discloses an optical fiber absorption enhanced electro-optical modulator based on a graphene/molybdenum disulfide heterojunction, belongs to electro-optical modulators in the photoelectron technical field and aims at providing the optical fiber absorption enhanced electro-optical modulator, with a good modulation depth and a high extinction ratio, based on the graphene/molybdenum disulfide heterojunction. According to the technical scheme, the optical fiber absorption enhanced electro-optical modulator comprises a substrate, wherein the substrate is provided with a concave slot, an optical fiber is arranged in the concave slot of the substrate, the optical fiber is provided with a polishing groove, a first graphene layer is arranged on the polishing groove and makes contact with an optical fiber core layer of the optical fiber, molybdenum disulfide is arranged on the first graphene layer, a second graphene layer is arranged on the molybdenum disulfide, and the first graphene layer and the second graphene layer stretch out of the two sides of the polishing groove of the optical fiber respectively and are connected with a first electrode and a second electrode respectively. The optical fiber absorption enhanced electro-optical modulator is suitable for the field of electro-optical modulators.
Description
Technical field
The invention belongs to photoelectron technical field, relate to a kind of electrooptic modulator, particularly relate to a kind of based on Graphene molybdenum disulfide heterojunction fiber absorption reinforced electric photomodulator.
Background technology
Electrooptic modulator is for regulating beam-switching, basis and the critical component of optical communication system, electric signal, by changing the characteristic such as intensity, phase place, polarization by the light carrier of photomodulator, is loaded on light carrier, transform electrical signals is become optical signal transmission numerical information by it.
Electrooptic modulator is typical external modulator, and be in optical fiber communication and optical interconnection system and core component, it can be modulated the light wave transmitted in optical fiber, enables light wave deliver the information of various high power capacity, two-forty.The external modulation to light of electrooptic modulator, compared to the directly modulation of laser instrument, can obtain higher modulation rate and wider modulation band-width.Graphene has caused global research boom since coming out from 2004, that it is the thinnest in known materials, most rigid, that structure is highly stable carbon atom two dimensional crystal, in its Graphene, the room temperature mobilities of charge carrier can reach 20000cm/Vs, all higher than any semiconductor material known today, therefore increasing electrooptic modulator also adopts grapheme material.
Graphene is as a kind of Two-dimensional Carbon atomic monolayer of dense cellular shape crystalline network, and it not only has excellent electric conductivity, and the speed at room temperature transmitting electronics is all faster than known conductor, and presents distinguished optical characteristics.These characteristics of Graphene make it can give full play to its advantage (see document MingLiu, etal.Agraphene-basedbroadbandopticalmodulator.Nature, 2011, Vol474, p64-67) on an optical modulator.But at present in electrooptic modulator grapheme material to be mostly placed directly among planar optical waveguide or its on the surface, the application for a patent for invention being 201510469011.9 as application number discloses a kind of polarization insensitive photomodulator based on arc Graphene, for the problem that the usable range solving the existence of existing Graphene photomodulator is narrow, it comprises optical waveguide basalis, the top of optical waveguide basalis is provided with dielectric layer, the top of dielectric layer is provided with D shape ducting layer, the periphery of D shape ducting layer is coated with the second arc graphene layer, the periphery of the second arc graphene layer is coated with the first arc graphene layer, the periphery of the first arc graphene layer is coated with square wave conducting shell, between square wave conducting shell and the first arc graphene layer, spacer medium layer is provided with between first arc graphene layer and the second arc graphene layer and between the second arc graphene layer and D shape ducting layer, first arc graphene layer extends out from the side of D shape waveguide and is connected with the first electrode, and the second arc graphene layer extends out from the opposite side of D shape ducting layer and is connected with the second electrode.In the technical scheme of this application for a patent for invention, grapheme material is exactly be arranged on the surface of planar optical waveguide.Application number be 201510506308.8 application for a patent for invention disclose a kind of Graphene phase type photomodulator based on slab guide, this photomodulator comprises substrate layer, optical waveguide, the first dielectric fill layer, the second dielectric fill layer and electrode structure; First dielectric fill layer, the second dielectric fill layer and optical waveguide are all positioned at substrate layer upper end, and optical waveguide is made up of the first rectangular waveguide set gradually from the bottom up, the first spacer medium layer, the first graphene layer, the second spacer medium layer, the second graphene layer, the 3rd spacer medium layer, the second rectangular waveguide; Electrode structure comprises the first metal layer and the second metal level, and the first metal layer and the second metal level are deposited on the upper surface of extension of the first graphene layer, the second graphene layer respectively.In the technical scheme of this application for a patent for invention, graphene layer is embedded in optical waveguide, enhance the interaction of Graphene and light, reduce the resistance of system, improve the modulation rate of modulator, can effective refractive index change in Effective Regulation waveguide, realize the dynamic modulation to light field phase place.
In addition, application number be 201310112643.0 patent of invention disclose a kind of all-fiber electro-optical modulator based on grapheme material and method thereof.It comprises single-mode fiber, silicon dioxide grooved substrate, Al
2o
3transition thin layer, graphene film, silicon dioxide grooved substrate is provided with single-mode fiber, and fixes with the epoxy glue of encapsulation, and be provided with groove at single-mode fiber, groove is provided with Al2O3 transition thin layer, Al
2o
3transition thin layer is provided with graphene film.Changed the conductivity characteristic of Graphene by the voltage that change metal electrode applies, thus change imaginary part or the real part of Graphene lamination layer structure effective refractive index, realize electric absorption intensity modulator or phase-modulator.
Summary of the invention
In above-mentioned two sections of patent documentations, no matter being that grapheme material is placed directly among planar optical waveguide, is that grapheme material is placed directly in planar optical waveguide on the surface, or is provided with at the groove of single-mode fiber and sets gradually Al
2o
3transition thin layer, graphene film, its Graphene is all main and is interacted by the evanescent field on its surface, is equivalent to apply perturbation to change whole optical waveguide to optical waveguide, thus more weak to the effect of whole optical waveguide, difference in depth modulation, causes the extinction ratio of modulation signal low.
Goal of the invention of the present invention is: for prior art Problems existing, provides that a kind of depth of modulation is good, extinction ratio is high based on Graphene molybdenum disulfide heterojunction fiber absorption reinforced electric photomodulator.
To achieve these goals, the technical solution used in the present invention is:
A kind of based on Graphene molybdenum disulfide heterojunction fiber absorption reinforced electric photomodulator, comprise substrate, described substrate offers recessed draw-in groove, optical fiber is provided with in the recessed draw-in groove of described substrate, described optical fiber is provided with polishing groove, described polishing groove is provided with the first graphene layer, described first graphene layer contacts with the fiber core layer of optical fiber, described first graphene layer is provided with molybdenum disulfide, described molybdenum disulfide is provided with the second graphene layer, described first graphene layer, second graphene layer extends from the both sides of the polishing groove of optical fiber respectively and connects the first electrode respectively, second electrode.
Wherein, described optical fiber is single-mode fiber, dispersion shifted optical fiber or dispersion compensating fiber.
Wherein, the degree of depth of described polishing groove extends to the fiber core layer of optical fiber, and on the fiber core layer of optical fiber, form the polishing groove with certain groove depth, and the lap of described first graphene layer, molybdenum disulfide and the second graphene layer at least covers the polishing groove on the fiber core layer of optical fiber.
Wherein, the groove depth of the polishing groove on the fiber core layer of described optical fiber is less than or equal to the radius of fiber core layer.
Wherein, the material of described first electrode is gold, silver, copper, platinum, titanium, nickel, cobalt, palladium one or a combination set of body, and the material of described second electrode is gold, silver, copper, platinum, titanium, nickel, cobalt, palladium one or a combination set of body.
In sum, owing to have employed technique scheme, the invention has the beneficial effects as follows:
1, in the present invention, this electrooptic modulator adopts Graphene optical fiber structure, device size is small, for micron dimension, make the volume of electrooptic modulator much smaller than the size of electrooptic modulator about 10 to 100 millimeters of magnitudes of traditional traditional lithium niobate material, Graphene has wide spectral and absorbs, and the spectral range be suitable for improves greatly, compatible with traditional cmos process, this electrooptic modulator is directly prepared on optical fiber, without the need to waveguide fiber coupling, thus efficiently solves a coupling difficult problem for optical fiber and waveguide, greatly reduces insertion loss, be conducive to realizing all-fiber, electrooptic modulator is without the need to designing special waveguiding structure, only need prepare polishing groove in a fiber, polishing groove sets gradually the first graphene layer from lower to upper, molybdenum disulfide, second graphene layer, the fiber core layer of optical fiber contacts with the first graphene layer, therefore the preparation technology of this electrooptic modulator is simple, and two layer graphenes and molybdenum disulfide are combined into Graphene/class molybdenum sulfide heterojunction, this Graphene/class molybdenum sulfide heterojunction has peculiar optic response, because molybdenum disulfide has stronger optical activity, the electron wave function characteristic (being produced by quantum size effect) of its local can cause producing van hove singularity (namely at other energy point individual in the critical part of electronic band structure, there is singularity in the density of states), under the photon effect of characteristic frequency, van hove singularity can improve density of electronic states significantly, its external quantum efficiency is caused to be increased to 30%.Compared with simple grapheme material, the Graphene proposed/class molybdenum sulfide heterojunction can overcome the shortcoming of the weak optic response of Graphene, molybdenum disulfide has electronics with Graphene complementation and optical characteristics, it is direct energy-gap semiconductor material, Graphene and the respective advantage of molybdenum disulfide material on optics and characteristic electron can be played, greatly can improve the efficiency of electroluminescent optical absorption, the efficiency of electroluminescent optical absorption is improved more than 10 times, also give full play to the intrinsic advantage of Graphene simultaneously, thus greatly improve the depth of modulation of electrooptic modulator, extinction ratio characteristic, make the depth of modulation of electrooptic modulator good, extinction ratio is high.
2, in the present invention, fiber selection single-mode fiber, dispersion shifted optical fiber or dispersion compensating fiber, can meet the optical modulation function of difference in functionality optical fiber when transmitting optical signal, again because be directly prepare electrooptic modulator on optical fiber, without the need to fiber-to-waveguide coupling, insertion loss is low.
3, provided by the invention based on Graphene/molybdenum disulfide heterojunction fiber absorption reinforced electric photomodulator, because Graphene has the electron mobility of superelevation, this electrooptic modulator showing based on Graphene can have the modulation rate of superelevation.
Accompanying drawing explanation
Fig. 1 is electrooptic modulator schematic three dimensional views of the present invention;
Fig. 2 is electrooptic modulator optical fiber D connected in star cross sectional representation of the present invention;
Be labeled as in figure: 1-substrate, 2-optical fiber, the 3-the first graphene layer, the 4-the second graphene layer, 5-molybdenum disulfide, the 6-the first electrode, the 7-the second electrode, 8-polishing groove, 9-recessed draw-in groove, 21-fibre cladding, 22-fiber core layer.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail.
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
A kind of based on Graphene molybdenum disulfide 5 heterojunction fiber absorption reinforced electric photomodulator, it mainly comprises substrate 1 and optical fiber 2.For the ease of fixedly mounting on the substrate 1 by optical fiber 2, thus on the upper surface of substrate 1, offer recessed draw-in groove 9, optical fiber 2 is directly installed in the recessed draw-in groove 9 of substrate 1.Except in the recessed draw-in groove 9 optical fiber 2 being connected in substrate 1, also can fix with the epoxy glue of encapsulation again in the recessed draw-in groove 9 that optical fiber 2 is connected in substrate 1 later.The fibre cladding 21 that optical fiber 2 comprises fiber core layer 22 and is enclosed in outside fiber core layer 22, optical fiber 2 is provided with polishing groove 8, and this polishing groove 8 at least passes fibre cladding 21 and extends to the fiber core layer 22 of optical fiber 2, and part fiber sandwich layer 22 is shown out; After this polishing groove 8 can directly extend to fiber core layer 22, this polishing groove 8 also can extend to follow-up the reneing of fiber core layer 22 and extends in fiber core layer 22 and form polishing groove 8 on the fiber core layer 22 of optical fiber 2 certainly.
In order to realize the basic modulation function of this electrooptic modulator, thus on polishing groove 8, be provided with the first graphene layer 3, this first graphene layer 3 directly contacts with the fiber core layer 22 of optical fiber 2 and covers the fibre cladding 21 of part; First graphene layer 3 is provided with molybdenum disulfide 5, and molybdenum disulfide 5 is provided with the second graphene layer 4, first graphene layer 3 and the second graphene layer 4 is kept apart formation heterojunction by molybdenum disulfide 5.The heterojunction be made up of the first graphene layer 3, second graphene layer 4 and molybdenum disulfide 5 covers the fiber core layer 22 of optical fiber 2 at least partly.First graphene layer 3 is connected the first electrode 6, second electrode 7 respectively after extending out from the both sides of the polishing groove 8 of optical fiber 2 respectively with the second graphene layer 4.
The principle of work of electrooptic modulator of the present invention is: during devices function, bias voltage is added on graphene layer by the first electrode 6, second electrode 7, by changing bias voltage, the optical absorption characteristic of dynamic conditioning Graphene/molybdenum disulfide 5 heterojunction, control Graphene/molybdenum disulfide 5 heterojunction realizes the modulation to light signal to the absorption intensity of light.Molybdenum disulfide 5 has electronics with Graphene complementation and optical characteristics, Graphene and the respective advantage of class material molybdenum sulfide on optics and characteristic electron can be played, Graphene/molybdenum disulfide 5 heterojunction can improve the efficiency of electroluminescent optical absorption greatly, not only overcome the shortcoming of the weak optic response of Graphene, also the efficiency of optical absorption is brought up to more than several times, and the intrinsic advantage of Graphene can be maintained, the modulation rate that can realize, compatible with CMOS again in technique.
In order to reduce the insertion loss of this electrooptic modulator, directly on optical fiber 2, preparing photomodulator, being coupled without the need to fiber-to-waveguide; This optical fiber 2 selects single-mode fiber 2, dispersion shifted optical fiber 2 or dispersion compensating fiber 2 can meet the optical modulation function of difference in functionality optical fiber when transmitting optical signal.
In order to improve contacting or area coverage of the fiber core layer 22 of heterojunction and the optical fiber 2 be made up of with molybdenum disulfide 5 the first graphene layer 3, second graphene layer 4 to a greater extent, thus the polishing groove 8 on optical fiber 2 directly extends to follow-up the reneing of fiber core layer 22 and extends in fiber core layer 22 and form polishing groove 8 on the fiber core layer 22 of optical fiber 2, and the lap of the first graphene layer 3, molybdenum disulfide 5 and the second graphene layer 4 at least covers the polishing groove 8 on the fiber core layer 22 of optical fiber 2; Optimal case is that the polishing groove 8 on optical fiber 2 directly extends to follow-up the reneing of fiber core layer 22 and extends the centerline of fiber core layer 22, the groove depth of the polishing groove 8 on the fiber core layer 22 of i.e. optical fiber 2 equals the radius of the fiber core layer 22 of optical fiber 2, the heterojunction be now made up of with molybdenum disulfide 5 the first graphene layer 3, second graphene layer 4 and the fiber core layer 22 of optical fiber 2 contact or the area of covering maximum.The heterojunction be made up of with molybdenum disulfide 5 the first graphene layer 3, second graphene layer 4 and the fiber core layer 22 of optical fiber 2 contact or the area of covering larger, modulation efficiency, the modulation effect of this electrooptic modulator are better.
In order to improve the electrical efficiency of electrode, the material of the first electrode 6 is set to one of gold, silver, copper, platinum, titanium, nickel, cobalt, palladium, also can be set to the assembly of gold, silver, copper, platinum, titanium, nickel, cobalt, palladium; The material of the second electrode 7 is set to one of gold, silver, copper, platinum, titanium, nickel, cobalt, palladium, also can be set to the assembly of gold, silver, copper, platinum, titanium, nickel, cobalt, palladium.Wherein, the material of the first electrode 6 can be identical with the material of the second electrode 7, and the material of the first electrode 6 can be not identical with the second electrode 7 yet.
embodiment 1
A kind of based on Graphene molybdenum disulfide 5 heterojunction fiber absorption reinforced electric photomodulator, comprise substrate 1, described substrate 1 offers recessed draw-in groove 9, optical fiber 2 is provided with in the recessed draw-in groove 9 of described substrate 1, described optical fiber 2 is provided with polishing groove 8, described polishing groove 8 is provided with the first graphene layer 3, described first graphene layer 3 contacts with the fiber core layer 22 of optical fiber 2, described first graphene layer 3 is provided with molybdenum disulfide 5, described molybdenum disulfide 5 is provided with the second graphene layer 4, described first graphene layer 3, second graphene layer 4 extends from the both sides of the polishing groove 8 of optical fiber 2 respectively and connects the first electrode 6 respectively, second electrode 7.
embodiment 2
A kind of based on Graphene molybdenum disulfide 5 heterojunction fiber absorption reinforced electric photomodulator, comprise substrate 1, described substrate 1 offers recessed draw-in groove 9, optical fiber 2 is provided with in the recessed draw-in groove 9 of described substrate 1, described optical fiber 2 is provided with polishing groove 8, described polishing groove 8 is provided with the first graphene layer 3, described first graphene layer 3 contacts with the fiber core layer 22 of optical fiber 2, described first graphene layer 3 is provided with molybdenum disulfide 5, described molybdenum disulfide 5 is provided with the second graphene layer 4, described first graphene layer 3, second graphene layer 4 extends from the both sides of the polishing groove 8 of optical fiber 2 respectively and connects the first electrode 6 respectively, second electrode 7.
Wherein, described optical fiber 2 is single-mode fiber 2, dispersion shifted optical fiber 2 or dispersion compensating fiber 2.
embodiment 3
A kind of based on Graphene molybdenum disulfide 5 heterojunction fiber absorption reinforced electric photomodulator, comprise substrate 1, described substrate 1 offers recessed draw-in groove 9, optical fiber 2 is provided with in the recessed draw-in groove 9 of described substrate 1, described optical fiber 2 is provided with polishing groove 8, described polishing groove 8 is provided with the first graphene layer 3, described first graphene layer 3 contacts with the fiber core layer 22 of optical fiber 2, described first graphene layer 3 is provided with molybdenum disulfide 5, described molybdenum disulfide 5 is provided with the second graphene layer 4, described first graphene layer 3, second graphene layer 4 extends from the both sides of the polishing groove 8 of optical fiber 2 respectively and connects the first electrode 6 respectively, second electrode 7.
Wherein, the degree of depth of described polishing groove 8 extends to the fiber core layer 22 of optical fiber 2, and on the fiber core layer 22 of optical fiber 2, form the polishing groove 8 with certain groove depth, and the lap of described first graphene layer 3, molybdenum disulfide 5 and the second graphene layer 4 at least covers the polishing groove 8 on the fiber core layer 22 of optical fiber 2.
As optimal case, the groove depth of the polishing groove 8 on the fiber core layer 22 of described optical fiber 2 is the radius of fiber core layer 22.
embodiment 4
A kind of based on Graphene molybdenum disulfide 5 heterojunction fiber absorption reinforced electric photomodulator, comprise substrate 1, described substrate 1 offers recessed draw-in groove 9, optical fiber 2 is provided with in the recessed draw-in groove 9 of described substrate 1, described optical fiber 2 is provided with polishing groove 8, described polishing groove 8 is provided with the first graphene layer 3, described first graphene layer 3 contacts with the fiber core layer 22 of optical fiber 2, described first graphene layer 3 is provided with molybdenum disulfide 5, described molybdenum disulfide 5 is provided with the second graphene layer 4, described first graphene layer 3, second graphene layer 4 extends from the both sides of the polishing groove 8 of optical fiber 2 respectively and connects the first electrode 6 respectively, second electrode 7.
Wherein, described optical fiber 2 is single-mode fiber 2, dispersion shifted optical fiber 2 or dispersion compensating fiber 2.
Wherein, the degree of depth of described polishing groove 8 extends to the fiber core layer 22 of optical fiber 2, and on the fiber core layer 22 of optical fiber 2, form the polishing groove 8 with certain groove depth, and the lap of described first graphene layer 3, molybdenum disulfide 5 and the second graphene layer 4 at least covers the polishing groove 8 on the fiber core layer 22 of optical fiber 2.
Wherein, the groove depth of the polishing groove 8 on the fiber core layer 22 of described optical fiber 2 is the radius of fiber core layer 22.
embodiment 5
A kind of based on Graphene molybdenum disulfide 5 heterojunction fiber absorption reinforced electric photomodulator, comprise substrate 1, described substrate 1 offers recessed draw-in groove 9, optical fiber 2 is provided with in the recessed draw-in groove 9 of described substrate 1, described optical fiber 2 is provided with polishing groove 8, described polishing groove 8 is provided with the first graphene layer 3, described first graphene layer 3 contacts with the fiber core layer 22 of optical fiber 2, described first graphene layer 3 is provided with molybdenum disulfide 5, described molybdenum disulfide 5 is provided with the second graphene layer 4, described first graphene layer 3, second graphene layer 4 extends from the both sides of the polishing groove 8 of optical fiber 2 respectively and connects the first electrode 6 respectively, second electrode 7.
Wherein, the material of described first electrode 6 is gold, silver, copper, platinum, titanium, nickel, cobalt, palladium one or a combination set of body, and the material of described second electrode 7 is gold, silver, copper, platinum, titanium, nickel, cobalt, palladium one or a combination set of body.
embodiment 6
A kind of based on Graphene molybdenum disulfide 5 heterojunction fiber absorption reinforced electric photomodulator, comprise substrate 1, described substrate 1 offers recessed draw-in groove 9, optical fiber 2 is provided with in the recessed draw-in groove 9 of described substrate 1, described optical fiber 2 is provided with polishing groove 8, described polishing groove 8 is provided with the first graphene layer 3, described first graphene layer 3 contacts with the fiber core layer 22 of optical fiber 2, described first graphene layer 3 is provided with molybdenum disulfide 5, described molybdenum disulfide 5 is provided with the second graphene layer 4, described first graphene layer 3, second graphene layer 4 extends from the both sides of the polishing groove 8 of optical fiber 2 respectively and connects the first electrode 6 respectively, second electrode 7.
Wherein, described optical fiber 2 is single-mode fiber 2, dispersion shifted optical fiber 2 or dispersion compensating fiber 2.
Wherein, the material of described first electrode 6 is gold, silver, copper, platinum, titanium, nickel, cobalt, palladium one or a combination set of body, and the material of described second electrode 7 is gold, silver, copper, platinum, titanium, nickel, cobalt, palladium one or a combination set of body.
embodiment 7
A kind of based on Graphene molybdenum disulfide 5 heterojunction fiber absorption reinforced electric photomodulator, comprise substrate 1, described substrate 1 offers recessed draw-in groove 9, optical fiber 2 is provided with in the recessed draw-in groove 9 of described substrate 1, described optical fiber 2 is provided with polishing groove 8, described polishing groove 8 is provided with the first graphene layer 3, described first graphene layer 3 contacts with the fiber core layer 22 of optical fiber 2, described first graphene layer 3 is provided with molybdenum disulfide 5, described molybdenum disulfide 5 is provided with the second graphene layer 4, described first graphene layer 3, second graphene layer 4 extends from the both sides of the polishing groove 8 of optical fiber 2 respectively and connects the first electrode 6 respectively, second electrode 7.
Wherein, the degree of depth of described polishing groove 8 extends to the fiber core layer 22 of optical fiber 2, and on the fiber core layer 22 of optical fiber 2, form the polishing groove 8 with certain groove depth, and the lap of described first graphene layer 3, molybdenum disulfide 5 and the second graphene layer 4 at least covers the polishing groove 8 on the fiber core layer 22 of optical fiber 2.
Wherein, the groove depth of the polishing groove 8 on the fiber core layer 22 of described optical fiber 2 is the radius of fiber core layer 22.
Wherein, the material of described first electrode 6 is gold, silver, copper, platinum, titanium, nickel, cobalt, palladium one or a combination set of body, and the material of described second electrode 7 is gold, silver, copper, platinum, titanium, nickel, cobalt, palladium one or a combination set of body.
embodiment 8
A kind of based on Graphene molybdenum disulfide 5 heterojunction fiber absorption reinforced electric photomodulator, comprise substrate 1, described substrate 1 offers recessed draw-in groove 9, optical fiber 2 is provided with in the recessed draw-in groove 9 of described substrate 1, described optical fiber 2 is provided with polishing groove 8, described polishing groove 8 is provided with the first graphene layer 3, described first graphene layer 3 contacts with the fiber core layer 22 of optical fiber 2, described first graphene layer 3 is provided with molybdenum disulfide 5, described molybdenum disulfide 5 is provided with the second graphene layer 4, described first graphene layer 3, second graphene layer 4 extends from the both sides of the polishing groove 8 of optical fiber 2 respectively and connects the first electrode 6 respectively, second electrode 7.
Wherein, described optical fiber 2 is single-mode fiber 2, dispersion shifted optical fiber 2 or dispersion compensating fiber 2.
Wherein, the degree of depth of described polishing groove 8 extends to the fiber core layer 22 of optical fiber 2, and on the fiber core layer 22 of optical fiber 2, form the polishing groove 8 with certain groove depth, and the lap of described first graphene layer 3, molybdenum disulfide 5 and the second graphene layer 4 at least covers the polishing groove 8 on the fiber core layer 22 of optical fiber 2.
Wherein, the groove depth of the polishing groove 8 on the fiber core layer 22 of described optical fiber 2 is the radius of fiber core layer 22.
Wherein, the material of described first electrode 6 is gold, silver, copper, platinum, titanium, nickel, cobalt, palladium one or a combination set of body, and the material of described second electrode 7 is gold, silver, copper, platinum, titanium, nickel, cobalt, palladium one or a combination set of body.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. one kind based on Graphene molybdenum disulfide heterojunction fiber absorption reinforced electric photomodulator, it is characterized in that: comprise substrate (1), described substrate (1) offers recessed draw-in groove (9), optical fiber (2) is provided with in the recessed draw-in groove (9) of described substrate (1), described optical fiber (2) is provided with polishing groove (8), described polishing groove (8) is provided with the first graphene layer (3), described first graphene layer (3) contacts with the fiber core layer (22) of optical fiber (2), described first graphene layer (3) is provided with molybdenum disulfide (5), described molybdenum disulfide (5) is provided with the second graphene layer (4), described first graphene layer (3), second graphene layer (4) extends from the both sides of the polishing groove (8) of optical fiber (2) respectively and connects the first electrode (6) respectively, second electrode (7).
2. as claimed in claim 1 based on Graphene molybdenum disulfide heterojunction fiber absorption reinforced electric photomodulator, it is characterized in that: described optical fiber (2) is single-mode fiber, dispersion shifted optical fiber or dispersion compensating fiber.
3. as claimed in claim 1 based on Graphene molybdenum disulfide heterojunction fiber absorption reinforced electric photomodulator, it is characterized in that: the degree of depth of described polishing groove (8) extends to the fiber core layer (22) of optical fiber (2), and the upper formation of fiber core layer (22) in optical fiber (2) has the polishing groove (8) of certain groove depth, and the lap of described first graphene layer (3), molybdenum disulfide (5) and the second graphene layer (4) at least covers the polishing groove (8) on the fiber core layer (22) of optical fiber (2).
4. as claimed in claim 3 based on Graphene molybdenum disulfide heterojunction fiber absorption reinforced electric photomodulator, it is characterized in that: the groove depth of the polishing groove (8) on the fiber core layer (22) of described optical fiber (2) is less than or equal to the radius of fiber core layer (22).
5. as claimed in claim 1 based on Graphene molybdenum disulfide heterojunction fiber absorption reinforced electric photomodulator, it is characterized in that: the material of described first electrode (6) is gold, silver, copper, platinum, titanium, nickel, cobalt, palladium one or a combination set of body, the material of described second electrode (7) is gold, silver, copper, platinum, titanium, nickel, cobalt, palladium one or a combination set of body.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105807453A (en) * | 2016-05-23 | 2016-07-27 | 电子科技大学 | Mid-infrared optical modulator based on fluoride fiber and black phosphorus |
| CN105866984A (en) * | 2016-06-12 | 2016-08-17 | 西北大学 | Graphene electro-optical modulator and preparation method thereof |
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| CN106707563A (en) * | 2016-11-23 | 2017-05-24 | 北京交通大学 | Ultra high speed electro-optical signal generator based on grid structure graphene microfiber |
| CN106773145A (en) * | 2016-11-23 | 2017-05-31 | 北京交通大学 | Electro-optical spatial ultrafast modulation device based on Graphene gate layer tiny fiber-optics |
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| CN112859388A (en) * | 2021-01-19 | 2021-05-28 | 北京工业大学 | Enhanced graphene electroabsorption modulator based on D-type optical fiber |
| CN113865702A (en) * | 2021-09-02 | 2021-12-31 | 暨南大学 | Optical fiber integrated photoelectric detector with polarizing function |
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