CN110119041A - Piezoelectric ceramics microarray polarization type optical fiber acousto-optic device - Google Patents
Piezoelectric ceramics microarray polarization type optical fiber acousto-optic device Download PDFInfo
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- CN110119041A CN110119041A CN201810125612.1A CN201810125612A CN110119041A CN 110119041 A CN110119041 A CN 110119041A CN 201810125612 A CN201810125612 A CN 201810125612A CN 110119041 A CN110119041 A CN 110119041A
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- piezoelectric ceramics
- optical fibre
- polarization maintaining
- electrode
- polarization
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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
- G02F1/0128—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 based on electro-mechanical, magneto-mechanical, elasto-optic effects
- G02F1/0131—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 based on electro-mechanical, magneto-mechanical, elasto-optic effects based on photo-elastic effects, e.g. mechanically induced birefringence
- G02F1/0134—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 based on electro-mechanical, magneto-mechanical, elasto-optic effects based on photo-elastic effects, e.g. mechanically induced birefringence in optical waveguides
Abstract
The present invention is to provide a kind of piezoelectric ceramics microarray polarization type optical fiber acousto-optic devices.The optical fiber acousto-optic modulator mainly uses the inkjet printing technology of metal sputtering plated film and piezoelectric ceramics, and the vibration-extrusion to optical fiber is realized by the micro-array-type PZT (piezoelectric transducer) prepared on polarization maintaining optical fibre surface.This high-frequency vibration leads to the acousto-optic interaction in optical fiber, and then causes to couple between polarization mode in polarization maintaining optical fibre, to reach the modulation effect to signal light.The fiber optic modulator has the characteristics that structure is small, modulation is flexible on the whole, can be used widely in technical field of optical fiber.
Description
(1) technical field
The present invention relates to a kind of fiber optic modulator and its technologies of preparing, and in particular to be a kind of micro- battle array of piezoelectric ceramics
Column polarization type optical fiber acousto-optic device and its manufacturing method, belong to technical field of optical fiber.
(2) background technique
Polarization maintaining optical fibre is a kind of single mode optical fiber of special construction, is had in current fiber optic communication and sensor-based system wide
General application.Its polarization holding capacity having, enable polarised light along its axial transmission when polarization state in longer distance
Inside remain unchanged.
When optical signal is transmitted along polarization maintaining optical fibre, there is two mutually orthogonal polarization modes, usual situations in a fiber
Under, the exchange of energy is not had between two kinds of orthogonal polarization modes.When polarization maintaining optical fibre is acted on by external periodic force, due to
Photoelastic effect, the refractive index of optical fiber will generate corresponding cyclically-varying, while two kinds of polarization modes will also couple,
When meeting certain matching condition, the energy of light wave can be transformed into another polarization state of same mode at certain wavelength.It is based on
Polarization maintaining optical fibre can be used to make polarization-type acousto-optic modulator by this principle.
The most key part for influencing optical fiber acousto-optic modulator performance is exactly the generation and coupling of sound wave.Presently, there are
Polarization maintaining optical fibre acousto-optic modulator in sound wave generation device be primarily present two types.First, being by sound wave generating device system
Make on substrate, sound wave is then coupled to inside of optical fibre by way of contact.Another device, directly by sonic generator
It is produced on optical fiber.Document (research of all -fiber polarization-maintaining acousto-optic modulator and application piezoelectricity and acousto-optic, 2013,35 (4):
Both of these case is described respectively in 496-499).Wherein, optic fibre turning acoustic wave transducer in side belongs to the first
Mode, the generation of sound wave rely primarily on the extensional vibration of PZT piece, and sound wave is along the horn coupled of taper to the side of 4mm long later
In optical fiber.The other end of side optical fiber is bonding by UV epoxy and main fiber, and therefore, sound wave can pass through side
In fiber coupling to main fiber.The shearing piezoelectric ceramics method introduced in this article generates and the transducing of coupling torsion sound wave
Device belongs to another sound wave generation device, i.e., directly sonic generator is produced on optical fiber.Wherein PZT piece utilizes oxygen ring
Glue is fixed on the bottom end of angle amplifier, inserts optical fibers into the center to angle amplifier, by controlling the back and forth movement of PZT, thus
Generate coupled acoustic wave.
Coupling device occurs for main two kinds of sound waves in polarization maintaining optical fibre acousto-optic modulator at present, respectively has in terms of practical application
Pros and cons.Fiber coupling method production in side is simple, disassembly is flexible, punches without in piezoelectric ceramics on piece, but the loss ratio of sound wave
Larger, especially when bonding or contact jaw be not compact, coupling efficiency will be affected.Shearing piezoelectric ceramics method volume
It is small, integrated level is high, while the coupling efficiency of sound wave is relatively preferable, but manufacturing process is relatively complicated, and the power of device is lower.
This patent discloses a kind of piezoelectric ceramics microarray polarization type optical fiber acousto-optic devices and preparation method thereof.The acousto-optic
The breakthrough use ceramic ink jet printing technology of modulator, directly can print to light for piezoelectric ceramics by way of ink-jet
Fine surface, and under the voltage signal added by programmable array electrode, corresponding vibration is generated, so as to cause reflecting in optical fiber
The cyclically-varying of rate makes to couple between polarization mode in polarization maintaining optical fibre.Compared with prior art, piezoelectric ceramics microarray
In polarization type optical fiber acousto-optic device ceramics in conjunction with optical fiber more closely, the loss of sound wave can be effectively reduced.Device is adopted
With micro array structure, Periodic Perturbation can be generated to polarization mode in polarization maintaining optical fibre, improve the coupling efficiency of sound wave.Together
When, due to the use of inkjet printing technology, preparation process is simplified, repeatability is high.
(3) summary of the invention
The purpose of the present invention is to provide a kind of simple and compact for structure, high pressures based on inkjet printing technology of coupling efficiency
Electroceramics microarray polarization type optical fiber acousto-optic device.
The object of the present invention is achieved like this:
The acousto-optic modulator is by polarization maintaining optical fibre 1, longitudinal metal array electrode 2, longitudinal piezoelectric ceramics array 3, may be programmed
Array electrode 4, radially inner layer metallic array electrode 5, radial outer metallic array electrode 6, radial piezoelectric ceramics array 7, circuit
8, metal lead wire 9, substrate 10, shell 11 form.Voltage signal can be printed upon polarization-maintaining light by programmable array electrode
The piezoelectric ceramics array element on fine surface converts electrical energy into acoustic wave energy caused by vibration, these sound waves will be produced with optical fiber
Third contact of a total solar or lunar eclipse bounce effect causes the cyclically-varying of refractive index in optical fiber, makes to couple between polarization mode in polarization maintaining optical fibre, thus real
Now to the modulation of optical signal.
Piezoceramic structures pass through ceramic ink in the piezoelectric ceramics microarray polarization type optical fiber acousto-optic device
Inkjet printing and high temperature sintering are realized in optical fiber and the straight forming of surface of metal electrode.Wherein piezoelectric ceramics ink is by nanoscale
Lead zirconate-titanate ceramic powder, dispersing agent and part organic solvent are formulated.
The preparation of electrode mainly passes through mask in piezoelectric structure and metal sputtering coating technique is realized.In metal coating mistake
Cheng Zhong can control the shape for being splashed to the electrode of polarization maintaining optical fibre and piezoelectric ceramics surface using mask, be protected by rotation
Polarisation fibre can form annular metal electrode.
The acousto-optic modulator uses radial and longitudinal piezoelectric energy-conversion structure, and to optical signal in the form of transducer array
Carry out periodic modulation.To the input electrical signal of programmable array electrode selectivity, certain part PZT (piezoelectric transducer) can control
It disconnects, to realize different modulation functions.According to the frequency of the electric signal of input and the difference of type, the type of modulation with
And the intensity of modulation will generate corresponding variation, and then reach the modulation purpose to optical signal.
By reasonably being arranged in optical fiber surface to the two kinds of piezoelectric energy-conversion structures proposed in present invention design
Cloth can make optical fiber acousto-optic modulator can be realized a variety of modulation functions.
(4) Detailed description of the invention
Fig. 1 is piezoelectric ceramics microarray polarization type optical fiber acousto-optic device structure and partial enlargement diagram.
Fig. 2 is the simulation result that longitudinal acting type piezoelectric-array structure influences refractive index in optical fiber.
Fig. 3 is the simulation result that radial effect type piezoelectric-array structure influences refractive index in optical fiber.
Fig. 4 is piezoelectric ceramics microarray polarization type optical fiber acousto-optic device operation principle schematic diagram.
(5) specific embodiment
Below with reference to specific embodiment, the present invention is further explained.
Fig. 1 gives the piezoelectric ceramics microarray polarization type optical fiber acousto-optic device example based on inkjet printing technology.By
Polarization maintaining optical fibre 1, longitudinal metal array electrode 2, longitudinal piezoelectric ceramics array 3, programmable array electrode 4, radially inner layer metal battle array
Column electrode 5, radial outer metallic array electrode 6, radial piezoelectric ceramics array 7, quartz substrate 8, metal pins 9, metal lead wire
10, shell 11 forms.Voltage signal can make the piezoelectric ceramics for being printed upon polarization maintaining optical fibre surface by programmable array electrode
Array element converts electrical signals into required acoustic signals, these acoustic signals can generate photoelastic effect in a fiber, causes
The cyclically-varying of refractive index in optical fiber makes to couple between polarization mode in polarization maintaining optical fibre, to realize the tune to optical signal
System.It invention can be widely used in fiber optic communication and sensory field of optic fibre.
The working principle of each piezoelectric unit is based on the inverse piezoelectric effect of piezoelectric ceramics in the acousto-optic modulator, by piezoelectricity
The H type piezoelectric equations of ceramics
It can determine the relationship between piezoelectric ceramics interior mechanics amount and electrical quantities.Wherein, T, S, D be respectively stress, strain and
Dielectric displacement, subscript respectively indicate the direction of stress and applied field.C, h, β are respectively the elastic constant of piezoelectric ceramics, piezoelectricity
Constant and dielectric isolation rate, and can be inquired by Materials Handbook.
By the kinetics equation and strain-displacement relational expression simultaneous solution of piezoelectric equations and piezoelectric ceramics, and according to side
Boundary's condition (each material is continuous in the stress of interface and displacement), can determine piezoelectric ceramics with institute's power up signal radial, vertical
To and circumferencial direction generate stress and strain.
The stress acted on optical fiber will make optical fiber generate corresponding strain, and further result in the change of refractive index in optical fiber
Change, specific expression-form is
Wherein, p is the elasto-optical coefficient of optical fiber.Therefore, it may be implemented by changing the electric signal of input to refractive index in optical fiber
Modulation.
According to the acousto-optic modulator, constructs model and the variation of refractive index in optical fiber is emulated (specific
Simulation result is shown in attached drawing 2,3).
Along the signal light of a certain polarization axle transmission of polarization maintaining optical fibre, since the variation of refractive index will be so that meet at respective wavelength
The light of phase-matching condition generates coupling between two polarization modes originally orthogonal in polarization maintaining optical fibre.By rotating analyzing
Device can obtain different types of signal light on two orthogonal directions of optical fiber.Fig. 4 is piezoelectric ceramics microarray polarization type optical
Fiber acousto-optic device operation principle schematic diagram.12 be light source output module, and 13 be piezoelectric ceramics microarray polarization-type optical fiber acousto-optic
Modulator, 14 indicate the polarizer, and 15, which indicate that the orthogonal polarization axes of polarization maintaining optical fibre script under the action of modulator generate, deflects, 16
Indicate analyzer.
The specific manufacturing process of piezoelectric ceramics microarray polarization type optical fiber acousto-optic device based on inkjet printing technology is such as
Under:
(1) preparation of longitudinal acting type microarray formula piezoelectric structure:
For realize structure purpose of design, applicant first with nanoscale lead zirconate titanate piezoelectric ceramic powder and dispersing agent
And other organic solvents have made the piezoelectric ceramics ink of stable homogeneous.It is by ink jet printer that piezoelectric ceramics ink is straight later
It takes on the surface for printing to polarization maintaining optical fibre, by rotating polarization maintaining optical fibre, ring piezoelectric pottery can be formed on polarization maintaining optical fibre surface
Porcelain cell array.It is put into heat-agglomerating in high temperature furnace after polarization maintaining optical fibre is preheated, is made annealing treatment later, in room after taking-up
Temperature is lower to be cooled and shaped.
The metal electrode of longitudinal acting piezoelectric ceramics two sides is completed by the preparation of metal coating sputtering technology.Preparation process is worked as
In, the shape of the metal electrode on polarization maintaining optical fibre surface is controlled using mask plate between polarization maintaining optical fibre and metallic target to be sputtered is placed in
Shape can be prepared circular metal electrode in close proximity to the polarization maintaining optical fibre surface of the two sides of piezoelectric ceramic ring by rotating polarization maintaining optical fibre
On.
(2) preparation of radial effect type microarray formula piezoelectric structure:
Internal layer electrode is prepared by metal coating sputtering technology, and mask plate is placed in polarization maintaining optical fibre and metallic target to be sputtered
Between, the shape of the metal electrode on polarization maintaining optical fibre surface is controlled by mask, it, can be by annular gold by rotating polarization maintaining optical fibre
Belong to electrod-array preparation on polarization maintaining optical fibre surface, forms the internal layer electrode of piezoelectric ceramics cell array.
On the surface that piezoelectric ceramics ink is directly printed to polarization maintaining optical fibre inner array electrode by ink-jet printer,
Reserve a part of internal layer electrode in print procedure, cover it by pressure ink, as internal layer electrode so as to outside lead
Welding.Thus along polarization maintaining optical fibre on internal layer array electrode, piezoelectric ceramics cell array is formed.Then polarization maintaining optical fibre is pre-
It is put into heat-agglomerating in high temperature furnace after heat, is made annealing treatment later, is cooled and shaped at room temperature after taking-up.
Outer layer metal electrode is prepared on molding piezoelectric ceramics surface using metal coating sputtering electrode technology of preparing again.
In coating process, using the shape of mask plate coordination electrode, the outer electrode of piezoelectric structure is prevented to be connected with internal layer electrode.
(3) after microarray formula piezoelectric structure completes, by ultra-sonic welding techniques respectively by lead and each metal electricity
Pole is mutually welded, so as to control voltage is applied in piezoelectric ceramics cell array in a manner of encoding, to realize to guarantor
Light wave modulation is transmitted in polarisation fibre.
(4) piezoelectric ceramics after molding being polarised, poling temperature is 110-130 DEG C, meanwhile, drawn by external
Line making alive signal above and below ring-shaped piezo ceramic array element and on two metal electrodes of two sides, and make piezoelectric ceramics
Locating electric field strength is 1.52.2V/um, and the duration is 15-20 minutes.
(5) polarization maintaining optical fibre with modulated structure prepared is fixed on a quartz substrate with ultraviolet glue, passes through 3D
Printing technique prints designed shell, and the quartz substrate for being loaded with polarization maintaining optical fibre is fixed in shell and is sealed
Dress.
It can be used according to the manufacturing method for longitudinally and radially acting on electroceramics microarray polarization type optical fiber acousto-optic device
The technologies such as ink jet printer printing and metal coating design a variety of composite periodicity vibrational structures in optical fiber surface.Voltage signal passes through
Programmable array electrode, needed for the piezoelectric ceramics array element for being printed upon polarization maintaining optical fibre surface can be made to convert electrical signals into
Acoustic signals, these acoustic signals can generate photoelastic effect in a fiber, cause the cyclically-varying of refractive index in optical fiber, make
It is coupled between polarization mode in polarization maintaining optical fibre, to realize the modulation to optical signal.
Claims (4)
1. piezoelectric ceramics microarray polarization type optical fiber acousto-optic device.It is mainly characterized by comprising: it by polarization maintaining optical fibre 1, longitudinal metal
Array electrode 2, longitudinal piezoelectric ceramics array 3, programmable array electrode 4, radially inner layer metallic array electrode 5, radial outer gold
Belong to array electrode 6, radial piezoelectric ceramics array 7, circuit 8, metal lead wire 9, substrate 10, shell 11 to form.Voltage signal passes through
Programmable array electrode can make the piezoelectric ceramics array element for being printed upon polarization maintaining optical fibre surface convert electrical energy into vibration institute
The acoustic wave energy of generation, these sound waves will generate photoelastic effect with optical fiber, cause the cyclically-varying of refractive index in optical fiber, make
It is coupled between polarization mode in polarization maintaining optical fibre, to realize the modulation to optical signal.It is logical to invention can be widely used in optical fiber
Letter and sensory field of optic fibre.
2. piezoelectric ceramics microarray polarization type optical fiber acousto-optic device according to claim 1, miniature array piezoelectricity change
Energy structure is divided into longitudinal acting type and radial effect type, and the polarization direction of piezoelectric ceramics is respectively along the axial direction and diameter of ceramic annulus
To.
3. the PZT (piezoelectric transducer) in piezoelectric ceramics microarray polarization type optical fiber acousto-optic device according to claim 2 is indulged
To the manufacturing method of polarization type, it is mainly characterized by comprising:
(1) piezoelectric ceramics ink is directly printed on the surface of polarization maintaining optical fibre by ink jet printer, it, can by rotating polarization maintaining optical fibre
To form ring-shaped piezo ceramic cell array on polarization maintaining optical fibre surface.It is put into high temperature furnace and burns after polarization maintaining optical fibre is preheated
Knot, is made annealing treatment later, is cooled and shaped at room temperature after taking-up.
(2) metal electrode of longitudinal acting piezoelectric ceramics two sides is completed by the preparation of metal coating sputtering technology.Preparation process is worked as
In, the metal electrode on polarization maintaining optical fibre surface is controlled using mask plate is placed between polarization maintaining optical fibre and metal targets to be sputtered
Circular metal electrode can be prepared the polarization maintaining optical fibre table in close proximity to the two sides of piezoelectric ceramic ring by rotating polarization maintaining optical fibre by shape
On face.
4. PZT (piezoelectric transducer) in piezoelectric ceramics microarray polarization type optical fiber acousto-optic device according to claim 2, radial
The manufacturing method of polarization type, is mainly characterized by comprising:
(1) internal layer electrode is prepared by metal coating sputtering technology, and mask plate is placed in polarization maintaining optical fibre and metallic target to be sputtered
Between, the shape of the metal electrode on polarization maintaining optical fibre surface is controlled by mask, it, can be by annular gold by rotating polarization maintaining optical fibre
Belong to electrod-array preparation on polarization maintaining optical fibre surface, forms the internal layer electrode of piezoelectric ceramics cell array.
(2) piezoelectric ceramics ink is directly printed on the surface of polarization maintaining optical fibre inner array electrode by ink-jet printer,
Reserve a part of internal layer electrode in print procedure, cover it by piezoelectric ceramics, as internal layer electrode so as to outside lead
Welding.Thus along polarization maintaining optical fibre on internal layer array electrode, piezoelectric ceramics array is formed.Then after polarization maintaining optical fibre being preheated
It is put into high temperature furnace and is sintered, made annealing treatment later, is cooled and shaped at room temperature after taking-up.
(3) outer layer metal electrode is prepared on molding piezoelectric ceramics surface using metal coating sputtering electrode technology of preparing again.
In coating process, using mask come the shape of coordination electrode, the upper electrode of piezoelectric structure is prevented to be connected with internal layer electrode
It connects.
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| CN201810125612.1A CN110119041A (en) | 2018-02-07 | 2018-02-07 | Piezoelectric ceramics microarray polarization type optical fiber acousto-optic device |
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| CN201810125612.1A CN110119041A (en) | 2018-02-07 | 2018-02-07 | Piezoelectric ceramics microarray polarization type optical fiber acousto-optic device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113156672A (en) * | 2021-05-08 | 2021-07-23 | 南开大学 | Packaging structure and packaging method of all-fiber coupler |
| CN115755269A (en) * | 2023-01-09 | 2023-03-07 | 武汉中科锐择光电科技有限公司 | Optical frequency comb generation device and method based on precise optical fiber micro-nano structure |
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| CN104406682A (en) * | 2014-10-10 | 2015-03-11 | 中国电子科技集团公司第四十一研究所 | Interference signal correlation adjusting method of dual Mach-Zehnder optical fiber interference system |
| CN104777556A (en) * | 2015-04-29 | 2015-07-15 | 中国科学院半导体研究所 | Piezoelectric ceramic photoelectric link microwave signal true time delay control device |
| CN106526903A (en) * | 2016-12-02 | 2017-03-22 | 山东省科学院激光研究所 | Polarization controller |
| CN206270600U (en) * | 2016-11-18 | 2017-06-20 | 南京恒高光电研究院有限公司 | Tunable fiber wave plate |
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2018
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203573040U (en) * | 2013-11-29 | 2014-04-30 | 山东海富光子科技股份有限公司 | Mechanical device for adjusting polarizing direction of transmission light in optic fiber |
| CN104406682A (en) * | 2014-10-10 | 2015-03-11 | 中国电子科技集团公司第四十一研究所 | Interference signal correlation adjusting method of dual Mach-Zehnder optical fiber interference system |
| CN104777556A (en) * | 2015-04-29 | 2015-07-15 | 中国科学院半导体研究所 | Piezoelectric ceramic photoelectric link microwave signal true time delay control device |
| CN206270600U (en) * | 2016-11-18 | 2017-06-20 | 南京恒高光电研究院有限公司 | Tunable fiber wave plate |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113156672A (en) * | 2021-05-08 | 2021-07-23 | 南开大学 | Packaging structure and packaging method of all-fiber coupler |
| CN115755269A (en) * | 2023-01-09 | 2023-03-07 | 武汉中科锐择光电科技有限公司 | Optical frequency comb generation device and method based on precise optical fiber micro-nano structure |
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