CN109298481A - The metallic silver filling photonic crystal fiber and its preparation method of spontaneous generation SPR effect - Google Patents
The metallic silver filling photonic crystal fiber and its preparation method of spontaneous generation SPR effect Download PDFInfo
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- CN109298481A CN109298481A CN201811173174.2A CN201811173174A CN109298481A CN 109298481 A CN109298481 A CN 109298481A CN 201811173174 A CN201811173174 A CN 201811173174A CN 109298481 A CN109298481 A CN 109298481A
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Abstract
A kind of the metallic silver filling photonic crystal fiber and its preparation method of spontaneous generation SPR effect, belong to optical-fiber intelligent field of communication technology.The optical fiber includes fibre core and covering, fibre core is solid quartz glass stick, covering includes quartz glass capillary, airport and filamentary silver, longitudinal surrounding of the fibre core is provided with multilayer quartz glass capillary, in second layer quartz glass capillary, wherein filamentary silver is arranged in the stomata of a quartz glass capillary.Its preparation method are as follows: design structure, arrangement and drawing optical fiber, the generation SPR effect that optical fiber obtained can be spontaneous.This method can produce the photonic crystal fiber of the spontaneous generation SPR effect of different airport structure snd size, plated film or filling are carried out to optical fiber without subsequent, and the position of formant can be made adjustable by adjusting the diameter of airport, filling filamentary silver diameter, capillary outer diameter, it is functional, also have structure simple simultaneously, the advantages that preparation is convenient, is adjusted, can be applied to the production of a variety of optical elements.
Description
Technical field
The invention belongs to optical-fiber intelligent fields of communication technology, are related to the manufacture of optical fibre device, and in particular to a kind of spontaneous production
The metallic silver filling photonic crystal fiber and its preparation method of raw SPR effect.
Background technique
After Knight in 1996, J.C. et al. successfully draw out first index-guiding PCF, photon
Crystal optical fibre enters the visual field of numerous researchers, excites huge research enthusiasm, while also bringing for scientific research field
New developing direction.Compared with traditional fiber, the structure design of photonic crystal fiber is more flexible, can produce many " unusual "
Characteristic, such as the single mode transport without cut-off, the low, dispersion of loss are controllable, nonlinear characteristic, high birefringence characteristic, therefore light
Photonic crystal fiber has been attached great importance, and has it in fields such as the preparations of the communications field, sensing detection and optical device
It is widely applied.
Surface plasma body resonant vibration (Surface Plasmon Resonance, SPR) is that metallic surface plasma swashs
Source is excited and a kind of covibration for generating.Early in nineteen sixty-eight, Otto and Kretchman, which just respectively report, a kind of uses glass
The method of the coupler excitating surface plasma stimulus of prism visible light.This convenient structure causes extensive concern,
In early days by the design for biosensors of SPR principle.With the continuous deepening of research, more and more scholars are by SPR principle
It is combined with optical fiber structure, application is also more and more extensive, sensory field is not only applicable to, in the optics device such as filter, beam splitter
It is also applied in the design of part.2018, Yong Wang et al. plated one layer in commercial photonic crystal fiber optical fiber surface
The silverskin of tens nanometer thickness realizes temperature sensing using PDMS material.This method needs are repaired again on the surface of optical fiber
It adorns and then generates SPR effect.2007, Alireza Hassani devised photonic crystals optical fiber structure, mentioned in conjunction with SPR effect
Go out a kind of novel sensor, and theoretically analyzes the performance of the sensor.Although the performance of sensor is fine,
This optical fiber is not made.It is not only applied in sensory field, Guowen An in 2016 et al. utilizes photonic crystal
The combination of optical fiber and SPR principle devises a kind of optical fiber filter.
It is possible thereby to seem, the combination of photonic crystal fiber optical fiber and SPR principle has a wide range of applications, and has very
Good application prospect.
Summary of the invention
The technical problems to be solved by the present invention are: in view of the deficiencies of the prior art, exempting complicated metal film production work
Skill provides the metallic silver filling photonic crystal fiber and its preparation method of a kind of spontaneous generation SPR effect, the production which can be spontaneous
Raw SPR effect.The spontaneous generation SPR effect of different airport structure snd size can be accurately produced by means of the present invention
The photonic crystal fiber answered, do not need it is subsequent plated film or filling are carried out to optical fiber, and by adjusting the diameter of airport, filling
Filamentary silver diameter, quartz glass capillary outer diameter can make the position of formant adjustable, functional, while also have structure letter
The advantages that single, preparation is convenient, is adjusted, can be applied to the system of the optical elements such as sensor, filter, polarizer, beam splitter
Make.
The technical scheme of the invention to solve the technical problem is:
A kind of metallic silver filling photonic crystal fiber of spontaneous generation SPR effect, is fiber cladding structure, specifically includes fibre
Core and covering, the fibre core are solid quartz glass stick, and the covering includes quartz glass capillary, airport and silver
Silk, airport are divided into three kinds:
The first: the stomata of quartz glass capillary；
Second: the gap that quartz glass capillary is spaced each other；
The third: the gap being spaced between quartz glass capillary and solid quartz glass stick；
Longitudinal surrounding of the fibre core is provided with multilayer quartz glass capillary, in second layer quartz glass capillary
In, wherein filamentary silver is arranged in the stomata of a quartz glass capillary.
The airport can make the effective refractive index of the covering lower than fibre core, guarantee that light passes in fiber core
It broadcasts.
The filamentary silver, is arranged in the airport of quartz glass capillary, which can make optical fiber form SPR effect
It answers.
In the metallic silver filling photonic crystal fiber of the spontaneous generation SPR effect, the covering further includes quartz
Glass cloth pipe and solid quartz glass fill silk, will be provided with the fibre core of multilayer quartz glass capillary, are inserted in quartz glass
Gap filling solid quartz glass filling in outer tube, between outermost layer quartz glass capillary and quartz glass outer tube
Silk.
The quartzy transparent capillary is in the hexagonal distribution of fibre core longitudinal direction surrounding, i.e., the outward direction in fibre core, and
One layer of quartzy transparent capillary is 6, and second layer quartz transparent capillary is 12, and third layer quartz transparent capillary is 18
A ... ..., n-th layer quartz transparent capillary is 6n.
The diameter of the metallic silver filling photonic crystal fiber of the spontaneous generation SPR effect is 120~200 microns；Institute
The diameter for the solid quartz glass stick stated be 7~20 microns, preferably 10~15 microns, the quartz glass capillary it is straight
Diameter is 7~20 microns, preferably 10~15 microns；The airport aperture of the stomatal limiting value of quartz glass capillary is 4~6 micro-
Rice；The air vent aperture for filling the quartz glass capillary of filamentary silver is 6~7 microns.
The metallic silver of the spontaneous generation SPR effect fills photonic crystal fiber, and stuffed quartz glass-filled silk is
The solid quartz glass of different-diameter fills silk, its purpose is, in the gold for drawing the spontaneous generation SPR effect formed
Belonging to silver filling, photonic crystal fiber will not there are gaps.
The preparation method of the metallic silver filling photonic crystal fiber of spontaneous generation SPR effect of the invention, including following step
It is rapid:
Step 1: carrying out setting for the metallic silver filling photonic crystals optical fiber structure of spontaneous generation SPR effect according to actual needs
Meter, and theory is carried out using transmission performance of the simulation software to the metallic silver filling photonic crystal fiber of spontaneous generation SPR effect
Simulation obtains the spectrum drawn up for the metallic silver filling photonic crystal fiber of spontaneous generation SPR effect；
Step 2: the knot of photonic crystal fiber is filled according to the metallic silver for the spontaneous generation SPR effect of design met the requirements
Structure, production solid quartz glass stick, quartz glass capillary and multiple solid quartz glass fill silk will be silver-colored after screening, cleaning
Silk is inserted in the stomata of a quartz glass capillary；Wherein, the outer diameter of solid quartz glass stick, quartz glass capillary
It is equal；
Using solid quartz glass stick as fibre core, from fibre core longitudinal direction, multilayer quartz glass capillary is successively arranged in surrounding
The quartz glass capillary for being inserted into filamentary silver is placed in the second layer by pipe, and the quartz capillary of every layer of setting is arranged with hexagon, and every layer
It is fixed after setting, after being provided with, the fibre core for being provided with quartz glass capillary is placed in quartz glass outer tube, stone
The solid quartz glass filling silk filling of gap different-diameter between English capillary glass tube and quartz glass outer tube, obtains
Preform；
Step 3: preform being fixed using the fixation device of wire-drawer-tower, one end of preform is penetrated into both ends
In the graphite furnace of opening, lower than maximum temperature point position in graphite furnace, graphite furnace is heated to light for the minimum end face of preform
Fine prefabricated rods softening；
The least significant end fabric head of preform is fallen, and preform is attenuated, and controls the auxiliary traction wheel of wire-drawer-tower,
It realizes and continues wire drawing, by adjusting heating temperature, hauling speed and delivery speed, control the size of wire drawing, obtain spontaneous generation
The metallic silver of SPR effect fills photonic crystal fiber.
In the step 2, the fibre core, the refractive index of fibre core is 1.45, and the diameter of fibre core is 1~2mm.
In the step 2, the diameter of the quartz glass capillary is 1~2mm, and its diameter and core diameter
Equal, the hole diameter of the quartz glass capillary is 0.325~0.65mm.
In the step 2, the hole diameter of the quartz glass capillary is designed according to actual needs, size
The transmission performance that difference obtains optical fiber is different, and the position of the absorption peak of SPR effect is different, and preferably internal diameter is 0.325~0.65mm.
In the step 2, the hole diameter for being provided with the quartz glass capillary of filamentary silver is set according to actual needs
Meter, the transmission performance that size difference obtains optical fiber is different, and the position of the absorption peak of SPR effect is different.
In the step 2, diameter < quartz glass capillary hole diameter of the filamentary silver, this is because due to
For the silver of fusing compared with air, viscosity and surface tension are all larger, and the purpose is to silver is filled in the optical fiber come to guarantee to draw out
Airport and other airport adjoining dimensions.
In the step 2, diameter < solid quartz glass stick diameter of the solid quartz glass filling silk.
In the step 2, the outer diameter of the quartz glass outer tube is 13~20mm, and internal diameter is 7.5~14.5mm,
Convenient for the production of preform.
In the step 3, the heating temperature is 1790 DEG C~1820 DEG C.
In the step 3, the hauling speed is 0.8~2.4m/min.
In the step 3, the delivery speed is 1.5mm/min~3.8mm/min.
The metallic silver filling photonic crystal fiber and its preparation method of a kind of spontaneous generation SPR effect of the invention, work are former
Reason are as follows:
The center of the structure photonic crystal fiber is made of solid quartz glass stick, around by the quartz with airport
Capillary composition, airport can make the effective refractive index of the covering lower than fibre core, form the projecting covering of fiber core refractive index
Structure, make light onwards transmission in the form of total internal reflection in the optical fiber, filling filamentary silver can make optical fiber form SPR in airport
Effect.Light is totally reflected at the interface of fibre core and covering, and the evanescent wave of formation has certain penetration capacity.When evanescent wave with
When silver is in contact, the concussion of the free electron rule of metal silver surface can be excited, forms surface plasma-wave.Light wave and surface etc.
Ion bulk wave will resonate when meeting phase-matching condition, referred to as SPR.When resonance occurs, most of energy is had
It is absorbed, so an apparent absorption peak can be formed in absorption spectrum.
Compared with the prior art, the advantages of the present invention are as follows: one kind disclosed by the invention can spontaneous generation SPR effect light
Photonic crystal fiber preparation method, manufacturing process simply, conveniently, controllably, compared to it is existing optical fiber surface plated film and
The method advantage of optical fiber air hole inwall metal-coated membrane is significant.Moreover, the production method of this New-type photon crystal optical fiber is logical
, the structure of photonic crystal fiber can be flexibly designed, by adjusting the arrangement of airport, the parameters such as the size of size,
Change the performance of optical fiber.It is proposed of the invention is photonic crystal fiber, is set especially in conjunction with the photonic crystal fiber of SPR effect
Meter provides a kind of effective new method with production.
The present invention devises a kind of metallic silver filling photonic crystal fiber of spontaneous generation SPR effect, spontaneous can generate
SPR effect carries out complicated plated film or filling processing to optical fiber without subsequent, can be applied equally to sensory field and optics
The production of device eliminates the film plating process such as complicated and expensive magnetron sputtering, chemical vapor deposition, and in fibre core and quartz
The gap between gap and quartz glass capillary between capillary glass tube, it is believed that be regularly arranged airport, greatly
The big complexity and cost for reducing production.The present invention be it is a kind of it is general design and prepare method, be equally applicable to it
His photonic crystals optical fiber structure.
Detailed description of the invention
Fig. 1 is the metallic silver filling photonic crystal fiber cross section structure schematic diagram of the spontaneous generation SPR effect of the present invention；
In figure, 1 is the stomata of quartz glass capillary；2 be filamentary silver；3 be fibre core；4 be quartz glass capillary；5 is most
Gap between outer layer quartz glass capillary and quartz glass outer tube；6 be quartz glass outer tube；7 be quartz glass wool
The gap that tubule is spaced each other；
d1For the diameter of quartz glass capillary；d2For the airport aperture of the stomatal limiting value of quartz glass capillary；d3For
Fill the air vent aperture of the quartz glass capillary of filamentary silver.
Fig. 2 is the metallic silver filling photonic crystal fiber cross sectional microscopy of the spontaneous generation SPR effect of the embodiment of the present invention
Figure.
Fig. 3 is the metallic silver filling photonic crystal fiber manufacturing process schematic diagram of the spontaneous generation SPR effect of the present invention.
Fig. 4 is that the metallic silver for the spontaneous generation SPR effect that the present invention is simulated with simulation software fills photonic crystal fiber
Spectrum.
Fig. 5 is the measure spectrum of the metallic silver filling photonic crystal fiber of spontaneous generation SPR effect prepared by the present invention.
Specific embodiment
Below with reference to embodiment, the present invention is described in further detail.
In following embodiment, use simulation software for Comsol.
To keep above-mentioned purpose, advantage more understandable, below certainly by the one kind provided by embodiment the present invention is described in detail
Hair generates metallic silver filling photonic crystal fiber of SPR effect and preparation method thereof.But those skilled in the art should anticipate
Know within the scope of the claims, can make various deformation in form and details, thus the present invention be not restricted to it is following
The embodiment described.
Embodiment 1
A kind of metallic silver filling photonic crystal fiber of spontaneous generation SPR effect, is fiber cladding structure, specifically includes fibre
Core and covering, the fibre core 3 are solid quartz glass stick, and the covering includes quartz glass capillary 4, airport and silver
Silk 2, airport is divided into three kinds:
The first: the stomata 1 of quartz glass capillary；
Second: the gap 7 that quartz glass capillary is spaced each other；
The third: the gap being spaced between quartz glass capillary and solid quartz glass stick；
Longitudinal surrounding of the fibre core 3 is provided with multilayer quartz glass capillary 4, in second layer quartz glass capillary
In, wherein filamentary silver 2 is arranged in the stomata of a quartz glass capillary.
The airport can make the effective refractive index of the covering lower than fibre core, guarantee that light passes in fiber core
It broadcasts.
The filamentary silver 2, is arranged in the airport of quartz glass capillary, which can make optical fiber form SPR
Effect.
In the metallic silver filling photonic crystal fiber of the spontaneous generation SPR effect, the covering further includes quartz
Glass cloth pipe 6 and solid quartz glass fill silk, will be provided with the fibre core of multilayer quartz glass capillary, are inserted in quartz glass
In outer tube 6, the gap 5 between outermost layer quartz glass capillary and quartz glass outer tube is filled solid quartz glass and is filled out
Imitation silk.
The quartzy transparent capillary 4 is in the hexagonal distribution of the longitudinal surrounding of fibre core 3, i.e., the outward direction in fibre core,
First layer quartz transparent capillary is 6, and second layer quartz transparent capillary is 12, and third layer quartz transparent capillary is 18
It is a.
The diameter of the metallic silver filling photonic crystal fiber of the spontaneous generation SPR effect is 150 microns；The reality
The diameter of heart quartz glass bar is 15 microns, the diameter d of the quartz glass capillary 41It is 15 microns；Quartz glass capillary
The airport aperture d that the stomata 1 of pipe is formed2It is 4.9 microns；Fill the air vent aperture d of the quartz glass capillary of filamentary silver3It is micro- for 7
Rice.
The metallic silver of the spontaneous generation SPR effect fills photonic crystal fiber, and stuffed quartz glass-filled silk is
The solid quartz glass of different-diameter fills silk, its purpose is, in the gold for drawing the spontaneous generation SPR effect formed
Belonging to silver filling, photonic crystal fiber will not there are gaps.
A kind of preparation method of the metallic silver filling photonic crystal fiber of spontaneous generation SPR effect, comprising the following steps:
Step 1: carrying out setting for the metallic silver filling photonic crystals optical fiber structure of spontaneous generation SPR effect according to actual needs
Meter, spontaneous generation SPR effect metallic silver filling photonic crystal fiber cross section structure schematic diagram see Fig. 1, design from
The diameter that hair generates the metallic silver filling photonic crystal fiber of SPR effect is 150 microns；The solid quartz glass stick it is straight
Diameter is 15 microns, the diameter d of the quartz glass capillary1It is 15 microns；The sky of the stomatal limiting value of quartz glass capillary
Air vent aperture d2It is 4.9 microns；Fill the air vent aperture d of the quartz glass capillary of filamentary silver3It is 7 microns.
And it is carried out using transmission performance of the simulation software to the metallic silver filling photonic crystal fiber of spontaneous generation SPR effect
Theoretical modeling obtains the spectrum drawn up for the metallic silver filling photonic crystal fiber of spontaneous generation SPR effect；It can be with by spectrum
It obtains its resonance absorbing peak and is located at 1450 nanometer wave strong points, which sees Fig. 4.
Step 2: the knot of photonic crystal fiber is filled according to the metallic silver for the spontaneous generation SPR effect of design met the requirements
Structure, production solid quartz glass stick, quartz glass capillary and multiple solid quartz glass fill silk will be straight after screening, cleaning
Diameter is that 0.5 millimeter of filamentary silver is inserted in the stomata of a quartz glass capillary；Wherein, solid quartz glass stick, quartz
The outer diameter of capillary glass tube is 2 millimeters；
Wherein, solid quartz glass stick is that the glass bar for being 20 millimeters to outer diameter is drawn, and obtaining diameter is 2 millimeters solid
Quartz glass bar, drawing process are as follows: hauling speed 0.6m/min, delivery speed 6mm/min, 1920 DEG C of heating temperature；
Wherein, it is that the glass bar that 20 millimeters of internal diameters are 6.5 millimeters is drawn that quartz glass capillary, which is to outer diameter, obtains outer diameter
The quartz glass capillary for being 0.65 millimeter for 2 millimeters, internal diameter, drawing process are as follows: hauling speed 0.59m/min send stick fast
Spend 6mm/min, 1920 DEG C of heating temperature.
Using solid quartz glass stick as fibre core, from fibre core longitudinal direction, multilayer quartz glass capillary is successively arranged in surrounding
The quartz glass capillary for being inserted into filamentary silver is placed in the second layer by pipe, and the quartz capillary of every layer of setting is arranged with hexagon, and every layer
It is fixed with adhesive tape after setting, after being provided with, the fibre core for being provided with quartz glass capillary is placed on quartz glass housing
The solid quartz glass filling silk of Guan Zhong, the gap different-diameter between quartz glass capillary and quartz glass outer tube are filled out
It fills, obtains preform；Since the silver of fusing is compared with air, viscosity and surface tension are all larger, so to guarantee to draw
The airport and other airport adjoining dimensions that silver is filled in optical fiber out, select filamentary silver diameter to be less than hollow billet internal diameter.
The outer diameter of the quartz glass outer tube is 13~20mm, and internal diameter is 7.5~14.5mm, is convenient for preform
Production.
Step 3: preform being fixed using three corner grasper of fixation device of wire-drawer-tower, one end of preform is worn
Enter in the graphite furnace of both ends open, lower than maximum temperature point position in graphite furnace, graphite furnace adds for the minimum end face of preform
Heat to preform softens；
The least significant end fabric head of preform is fallen, and preform is attenuated, and controls the auxiliary traction wheel of wire-drawer-tower,
It realizes and continues wire drawing, by adjusting heating temperature, hauling speed and delivery speed, control the size of wire drawing, obtain spontaneous generation
The metallic silver of SPR effect fills photonic crystal fiber.
In drawing process, heating temperature is 1790 DEG C~1820 DEG C and is adjusted；The hauling speed is 0.8-
2.4m/min being adjusted；The delivery speed is adjusted for 1.5mm/min-3.8mm/min, and control draws spontaneous generation
The size of the metallic silver filling photonic crystal fiber of SPR effect.Micro- sem observation fiber end face is constantly used simultaneously, checks light
The internal structure of photonic crystal fiber, until obtaining required photonic crystal fiber.It is detected through spectrometer, obtained output spectrum
There are an absorption peak near 1450nm, which sees Fig. 5.
Pass through the simulated spectra of Fig. 4 and the measure spectrum comparison of Fig. 5, it was demonstrated that the spontaneous generation SPR effect designed
Metallic silver fill photonic crystal fiber, and the optical fiber being capable of spontaneous generation SPR effect.
Embodiment 2
A kind of metallic silver filling photonic crystal fiber of spontaneous generation SPR effect, with embodiment 1.
A kind of preparation method of the metallic silver filling photonic crystal fiber of spontaneous generation SPR effect, preparation process flow
See Fig. 3, comprising the following steps:
1) the metallic silver filling photonic crystal fiber of spontaneous generation SPR effect as shown in Figure 1 is devised, it is soft according to emulating
Part carries out theoretical modeling to the transmission performance of the metallic silver of spontaneous generation SPR effect filling photonic crystal fiber, preparation it is spontaneous
The metallic silver filling photonic crystal fiber diameter for generating SPR effect is 150 microns, 4 diameter d of fibre core 3 and quartz glass capillary1
It is 15 microns, the airport aperture d of the stomatal limiting value of quartz glass capillary2It is 4.9 microns, the diameter d of filamentary silver filling3It is micro- for 7
Rice.It is calculated by simulation software, resonance absorbing peak is located at 1450 nanometer wave strong points.
2) quartz glass capillary and solid quartz glass stick for being 2 millimeters according to the structure fabrication outer diameter of design；
Wherein, the manufacturing process of solid quartz glass stick are as follows: draw 2 millimeters of diameter using 20 millimeters of diameter of glass bars
Solid quartz glass stick, wherein in pulling process, hauling speed 0.6m/min, delivery speed 6mm/min, heating temperature
It is 1920 DEG C.
Wherein, the manufacturing process of quartz glass capillary are as follows: 20 millimeters of outer diameter, the glass tube that 6.5 millimeters of internal diameter is drawn outer
The quartz glass capillary of 2 millimeters of diameter, 0.65 millimeter of internal diameter, wherein in pulling process, hauling speed 0.59m/min send stick
Speed is 6mm/min, and heating temperature is 1920 DEG C.
3) after by screening, cleaning, 0.5 millimeter of filamentary silver of diameter is inserted in the stomata of a quartz glass capillary,
Then it is thrown into the second layer, and every layer is fixed using adhesive tape, put it into the quartz glass outer tube of major diameter, surrounding is empty
Gap is filled up using the solid quartz glass filling silk of different-diameter, obtains preform.Since the silver of fusing is compared with air,
Viscosity and surface tension are all larger, so to guarantee to draw out the airport and other air pore sizes of filling silver in the optical fiber come
It is close, select filamentary silver diameter to be less than hollow billet internal diameter.
4) preform is fixed using three corner graspers of wire-drawer-tower, preform bottom end is passed through in graphite furnace, most
Low side face is lower than graphite furnace thermal self-restraint stress position, the quartz glass softening being heated in preform.Utilize optical fiber prefabricating
The gravity that the least significant end fabric head of stick is fallen draws and attenuates preform, and realizes lasting draw using the auxiliary traction wheel of wire-drawer-tower
Silk.High-purity argon gas is constantly filled in graphite furnace simultaneously, as protection gas.
5) in drawing process, heating temperature is adjusted within the scope of 1790 DEG C~1820 DEG C, hauling speed is in 0.8-2.4m/
It is adjusted between min and delivery speed adjusts between 1.5mm/min-3.8mm/min, control draws spontaneous generation SPR effect
Metallic silver filling photonic crystal fiber size.Micro- sem observation fiber end face is constantly used simultaneously, checks photonic crystal
The internal structure of optical fiber, until obtaining required photonic crystal fiber, wherein the metallic silver of spontaneous generation SPR effect is filled
Photonic crystal fiber schematic cross-section is shown in Fig. 2.It is detected through spectrometer, there are a suctions near 1450nm for obtained output spectrum
Receive peak.
Claims (10)
- It is fiber cladding structure 1. a kind of metallic silver of spontaneous generation SPR effect fills photonic crystal fiber, which is characterized in that Fibre core and covering are specifically included, the fibre core is solid quartz glass stick, and the covering includes quartz glass capillary, sky Stomata and filamentary silver, airport are divided into three kinds:The first: the stomata of quartz glass capillary；Second: the gap that quartz glass capillary is spaced each other；The third: the gap being spaced between quartz glass capillary and solid quartz glass stick；Longitudinal surrounding of the fibre core is provided with multilayer quartz glass capillary, in second layer quartz glass capillary, In the stomata of quartz glass capillary filamentary silver is set.
- 2. the metallic silver of spontaneous generation SPR effect as described in claim 1 fills photonic crystal fiber, which is characterized in that institute The filamentary silver stated, is arranged in the airport of quartz glass capillary, which can make optical fiber form SPR effect.
- 3. the metallic silver of spontaneous generation SPR effect as described in claim 1 fills photonic crystal fiber, which is characterized in that institute In the metallic silver filling photonic crystal fiber for the spontaneous generation SPR effect stated, the covering further includes quartz glass outer tube Silk is filled with solid quartz glass, the fibre core of multilayer quartz glass capillary will be provided with, be inserted in quartz glass outer tube, Gap filling solid quartz glass between outermost layer quartz glass capillary and quartz glass outer tube fills silk.
- 4. the metallic silver of spontaneous generation SPR effect as described in claim 1 fills photonic crystal fiber, which is characterized in that institute The quartzy transparent capillary stated is in the hexagonal distribution of fibre core longitudinal direction surrounding, i.e., the outward direction in fibre core, first layer quartz is thoroughly Bright capillary is 6, and second layer quartz transparent capillary is 12, and third layer quartz transparent capillary is 18 ... ..., n-th The quartzy transparent capillary of layer is 6n.
- 5. the metallic silver of spontaneous generation SPR effect as described in claim 1 fills photonic crystal fiber, which is characterized in that institute The diameter of the metallic silver filling photonic crystal fiber for the spontaneous generation SPR effect stated is 120~200 microns；The solid stone The diameter of English glass bar is 7~20 microns, and the diameter of the quartz glass capillary is 7~20 microns；Quartz glass capillary The airport aperture of the stomatal limiting value of pipe is 4~6 microns；The air vent aperture for filling the quartz glass capillary of filamentary silver is 6~7 micro- Rice.
- 6. the preparation of the metallic silver filling photonic crystal fiber of spontaneous generation SPR effect described in Claims 1 to 5 any one Method, which comprises the following steps:Step 1: the design of the metallic silver filling photonic crystals optical fiber structure of spontaneous generation SPR effect is carried out according to actual needs, And theoretical mould is carried out using transmission performance of the simulation software to the metallic silver filling photonic crystal fiber of spontaneous generation SPR effect It is quasi-, obtain the spectrum drawn up for the metallic silver filling photonic crystal fiber of spontaneous generation SPR effect；Step 2: the structure of photonic crystal fiber is filled according to the metallic silver for the spontaneous generation SPR effect of design met the requirements, It makes solid quartz glass stick, quartz glass capillary and multiple solid quartz glass and fills silk, after screening, cleaning, by filamentary silver It is inserted in the stomata of a quartz glass capillary；Wherein, the outer diameter phase of solid quartz glass stick, quartz glass capillary Deng；Using solid quartz glass stick as fibre core, from fibre core longitudinal direction, multilayer quartz glass capillary is successively arranged in surrounding, will The quartz glass capillary of insertion filamentary silver is placed in the second layer, and the quartz capillary of every layer of setting is arranged with hexagon, every layer of setting It is fixed afterwards, after being provided with, the fibre core for being provided with quartz glass capillary is placed in quartz glass outer tube, quartzy glass The solid quartz glass filling silk filling of gap different-diameter between glass capillary and quartz glass outer tube, obtains optical fiber Prefabricated rods；Step 3: preform being fixed using the fixation device of wire-drawer-tower, one end of preform is penetrated into both ends open Graphite furnace in, the minimum end face of preform is heated to predispersed fiber lower than maximum temperature point position in graphite furnace, graphite furnace Stick softening processed；The least significant end fabric head of preform is fallen, and preform is attenuated, and controls the auxiliary traction wheel of wire-drawer-tower, is realized Continue wire drawing, by adjusting heating temperature, hauling speed and delivery speed, controls the size of wire drawing, obtain spontaneous generation SPR effect The metallic silver filling photonic crystal fiber answered.
- 7. the preparation method of the metallic silver filling photonic crystal fiber of spontaneous generation SPR effect as claimed in claim 6, special Sign is, in the step 2, the fibre core, the refractive index of fibre core is 1.45, and the diameter of fibre core is 1~2mm；The diameter of the quartz glass capillary is 1~2mm, and its diameter is equal with core diameter, the quartzy glass The hole diameter of glass capillary is 0.325~0.65mm.
- 8. the preparation method of the metallic silver filling photonic crystal fiber of spontaneous generation SPR effect as claimed in claim 6, special Sign is that the solid quartz glass fills diameter < solid quartz glass stick diameter of silk；The outer diameter of the quartz glass outer tube is 13~20mm, and internal diameter is 7.5~14.5mm.
- 9. the preparation method of the metallic silver filling photonic crystal fiber of spontaneous generation SPR effect as claimed in claim 6, special Sign is, in the step 2, the hole diameter of the quartz glass capillary is designed according to actual needs, size The transmission performance that difference obtains optical fiber is different, and the position of the absorption peak of SPR effect is different；Diameter < quartz glass capillary hole diameter of the filamentary silver；It is provided with the gas of the quartz glass capillary of filamentary silver Bore dia is designed according to actual needs, and the transmission performance that size difference obtains optical fiber is different, the position of the absorption peak of SPR effect Set difference.
- 10. the preparation method of the metallic silver filling photonic crystal fiber of spontaneous generation SPR effect as claimed in claim 6, It is characterized in that, in the step 3, the heating temperature is 1790 DEG C~1820 DEG C；The hauling speed be 0.8~ 2.4m/min；The delivery speed is 1.5mm/min~3.8mm/min.
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| CN111977957A (en) * | 2020-08-25 | 2020-11-24 | 东北大学 | Gas pressure maintaining regulation and control device, microstructure optical fiber and preparation method of microstructure optical fiber |
| CN111977959A (en) * | 2020-08-25 | 2020-11-24 | 东北大学 | V-shaped high birefringent microstructure optical fiber with air hole size controlled by air pressure and manufacturing method thereof |
| CN111977958A (en) * | 2020-08-25 | 2020-11-24 | 东北大学 | Panda-shaped micro-structure optical fiber with oval core filled with silver wires and preparation method thereof |
| CN111995239A (en) * | 2020-08-25 | 2020-11-27 | 东北大学 | Microstructure optical fiber with controlled deformation of air hole wall and preparation method thereof |
| CN112408773A (en) * | 2020-10-29 | 2021-02-26 | 东北大学 | D-shaped photonic crystal optical fiber preform and D-shaped photonic crystal optical fiber drawing method thereof |
| CN114414084A (en) * | 2021-12-28 | 2022-04-29 | 北京邮电大学 | Hollow negative curvature optical fiber temperature sensor based on SPR effect |
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