CN108132549A - It is a kind of to polarize unrelated optical fiber acousto-optic filter and its assembly method - Google Patents
It is a kind of to polarize unrelated optical fiber acousto-optic filter and its assembly method Download PDFInfo
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- CN108132549A CN108132549A CN201810089261.3A CN201810089261A CN108132549A CN 108132549 A CN108132549 A CN 108132549A CN 201810089261 A CN201810089261 A CN 201810089261A CN 108132549 A CN108132549 A CN 108132549A
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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
- G02F1/11—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 acousto-optical elements, e.g. using variable diffraction by sound or like mechanical waves
- G02F1/125—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 acousto-optical elements, e.g. using variable diffraction by sound or like mechanical waves in an optical waveguide structure
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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
- G02F1/11—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 acousto-optical elements, e.g. using variable diffraction by sound or like mechanical waves
- G02F1/113—Circuit or control arrangements
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
Abstract
This application discloses a kind of unrelated optical fiber acousto-optic filter of polarization, the first single mode optical fiber is the first polarization maintaining optical fibre and the second polarization maintaining optical fibre through the first polarization beam apparatus branch；The input terminal of the output terminal of first polarization maintaining optical fibre and first collimator connects, and the output terminal of the second polarization maintaining optical fibre is connect with the input terminal of the second collimator, and first collimator and the second collimator are arranged in parallel and towards the input sides of acousto-optic block；Two table electrodes are arranged in parallel on acousto-optic block, two table electrodes are connect with match circuit；Third collimator and the 4th collimator are arranged in parallel and towards the input sides of acousto-optic block；Third collimator is connect with third polarization maintaining optical fibre, and the 4th collimator is connect with the 4th polarization maintaining optical fibre, and third polarization maintaining optical fibre and the 4th polarization maintaining optical fibre are combined through the second polarization beam apparatus as the second single mode optical fiber.The application realizes while handles while handle two beam diffraction lights and ensure the stabilized intensity of diffraction light, and optical fiber acousto-optic filter is made to can be applied to the optical signal processing system using single mode optical fiber.
Description
Technical field
This application involves filter technologies field more particularly to a kind of unrelated optical fiber acousto-optic filter of polarization and its assembling sides
Method.
Background technology
Optical fiber acousto-optic filter due to insertion loss is low, spectral resolution is high, the response time is fast, it is compact-sized, without movement
The many merits such as component, the extensive application in the systems such as spectrum analysis, spectral balanced processing, optical information processing.
The acousto-optic crsytal used in traditional fiber acousto-optic filter has polarization correlated, generation for birefringece crystal
The vector correlation figure of acoustic optic interaction is as shown in Figure 1, K is sound wave vector, and kd is o light vectors, and ki is e light vectors, by polar plot
It is found that when incident light is the o light time, emergent light is e light, and when incident light is the e light time, emergent light is o light.When incident light is non-inclined
When the light that shakes inputs, as shown in Fig. 2, in figure, fo is sound wave, after crystal is divided, o light and e light respectively to both direction diffraction,
The correspondence of the frequency of ultrasonic wave after the difference of the refractive index in crystal due to o light and e light, diffraction wavelength and electroacoustic conversion
Also it is different, it is same since the frequency of ultrasonic wave after the electroacoustic conversion of application is different for the input light of phase co-wavelength
Diffraction cannot occur simultaneously for o light and e light under the frequency of ultrasonic wave after electroacoustic conversion.Therefore, optical fiber acousto-optic filter is mostly using guarantor
Polarisation is fine, is directly handled with linearly polarized light, can ensure minimum insertion loss.However polarization maintaining optical fibre is expensive, is
Cost is reduced, most of optical signal processing systems use single mode optical fiber.The input light of optical fiber acousto-optic filter is unpolarized
Light, diffraction light is two beams after output, however can only handle a branch of diffraction light, and due to every road diffraction using single-mode polarization maintaining fiber
The light intensity of light is by input Laser Polarization, and there are unstability.Further, since after the conversion of same electroacoustic ultrasonic wave frequency
Corresponding diffraction optical wavelength also differs, thus output terminal coupled respectively using single-mode polarization maintaining fiber after carry out close beam processing also without
Method ensures to filter out the consistency of spectrum.
Therefore, optical fiber acousto-optic filter how to be made to can be applied to become using the optical signal processing system of single mode optical fiber
Those skilled in the art's urgent problem.
Invention content
For deficiencies of the prior art, the application problem to be solved is：Optical fiber acousto-optic how to be made to filter
Device can be applied to the optical signal processing system using single mode optical fiber.
In order to solve the above technical problems, the application employs following technical solution：
A kind of unrelated optical fiber acousto-optic filter of polarization, including the first single mode optical fiber, the first polarization beam apparatus, the first polarization maintaining optical fibre,
Second polarization maintaining optical fibre, first collimator, the second collimator, match circuit, acousto-optic block, third collimator, the 4th collimator,
Three polarization maintaining optical fibres, the 4th polarization maintaining optical fibre, the second polarization beam apparatus and the second single mode optical fiber, wherein：
First single mode optical fiber is shunted to first polarization maintaining optical fibre and second polarization-maintaining through first polarization beam apparatus
Optical fiber；
The output terminal of first polarization maintaining optical fibre is connect with the input terminal of the first collimator, second polarization maintaining optical fibre it is defeated
Outlet is connect with the input terminal of second collimator, the first collimator and second collimator is arranged in parallel and direction
The input side of the acousto-optic block；
Be arranged in parallel with two table electrodes on the acousto-optic block, the sound wave that two table electrodes generate respectively with described in process
Acoustic optic interaction occurs for the light that first collimator and second collimator inject the acousto-optic block, two table electrodes with
The match circuit connection；
The third collimator is arranged in parallel with the 4th collimator and towards the outlet side of the acousto-optic block, acousto-optic occurs
Light after interaction is inputted respectively by the slow axis of the third collimator and the 4th collimator；
The third collimator is connect with the third polarization maintaining optical fibre, and the 4th collimator connects with the 4th polarization maintaining optical fibre
It connects, the third polarization maintaining optical fibre and the 4th polarization maintaining optical fibre are combined through second polarization beam apparatus to second single-mode optics
It is fine.
Preferably, the unrelated optical fiber acousto-optic filter of polarization further includes radiating block, wherein：
The radiating block is arranged on the acousto-optic block, and the match circuit is arranged on the radiating block.
Preferably, the unrelated optical fiber acousto-optic filter of polarization further includes pedestal, wherein：
The acousto-optic block is arranged on the pedestal, and the radiating block is mounted on the pedestal and connects with the acousto-optic block
It connects, the radiating block is used to the acousto-optic block being fixed on the pedestal.
A kind of assembly method for polarizing unrelated optical fiber acousto-optic filter, the assembling of the unrelated optical fiber acousto-optic filter of polarization
Method includes the following steps for assembling the unrelated optical fiber acousto-optic filter of above-mentioned polarization：
Two table electrodes are connect with the match circuit；
The frequency parameter of ultrasonic wave matches after being converted on the match circuit to the electroacoustic of the acousto-optic block；
Connect first single mode optical fiber, first polarization beam apparatus, first polarization maintaining optical fibre, the second polarization-maintaining light
Fine, described first collimator, second collimator, the third collimator, the 4th collimator, the third polarization-maintaining light
Fine, described 4th polarization maintaining optical fibre, second polarization beam apparatus and second single mode optical fiber；
Apply operating voltage, adjust the polarization state of the light of the first collimator output, make the light of the first collimator output
For horizontally or vertically linearly polarized light, then deflecting the first collimator makes the first collimator occur with the acousto-optic block
Acoustic optic interaction, adjusting the position of the third collimator makes diffraction polarization light be coupled into the slow of the third collimator completely
Axis, the fixed first collimator and the third collimator after the completion of coupling；
Apply operating voltage, adjust the polarization state of the light of the second collimator output, make the light of the second collimator output
For horizontally or vertically linearly polarized light, then deflecting second collimator makes second collimator occur with the acousto-optic block
Acoustic optic interaction, adjusting the position of the 4th collimator makes to be coupled into the described 4th completely from the light that the acousto-optic block projects
The slow axis of collimator, fixed second collimator and the 4th collimator after the completion of coupling；
Opposing coupler position of the third collimator with the 4th collimator relative to the acousto-optic block is adjusted, ensures two
The consistency of delay of the road light in coupling.
Preferably, the unrelated optical fiber acousto-optic filter of polarization further includes radiating block, and the radiating block is arranged on the sound
On light block, the match circuit is arranged on the radiating block；The assembly method of the unrelated optical fiber acousto-optic filter of polarization
It further includes and the radiating block is mounted on the acousto-optic block, the match circuit is mounted on the radiating block.
Preferably, the unrelated optical fiber acousto-optic filter of polarization further includes pedestal, and the acousto-optic block is arranged on the bottom
On seat, the radiating block is mounted on the pedestal and is connect with the acousto-optic block, and the radiating block is used for the acousto-optic
Block is fixed on the pedestal；The assembly method of the unrelated optical fiber acousto-optic filter of polarization is further included the acousto-optic block
It is fixed on the pedestal by the radiating block.
In conclusion this application discloses a kind of unrelated optical fiber acousto-optic filter of polarization, wherein, the first single mode optical fiber is through the
One polarization beam apparatus branch is the first polarization maintaining optical fibre and the second polarization maintaining optical fibre；The output terminal and first collimator of first polarization maintaining optical fibre
Input terminal connection, the output terminal of the second polarization maintaining optical fibre connect with the input terminal of the second collimator, first collimator and the second standard
Straight device is arranged in parallel and towards the input side of acousto-optic block；Two table electrodes, two table electrodes are arranged in parallel on acousto-optic block
With injecting the light of acousto-optic block by first collimator and the second collimator acoustic optic interaction occurs for the sound wave of generation respectively, two
Table electrode is connect with match circuit；Third collimator and the 4th collimator are arranged in parallel and towards the input sides of acousto-optic block；The
Three collimators are connect with third polarization maintaining optical fibre, and the 4th collimator is connect with the 4th polarization maintaining optical fibre, third polarization maintaining optical fibre and the 4th guarantor
Polarisation fibre is the second single mode optical fiber through the combining of the second polarization beam apparatus.Single mode optical fiber is divided into two polarization maintaining optical fibres by the application, from
And realize while handle while handle two beam diffraction lights and ensure the stabilized intensity of diffraction light, enable optical fiber acousto-optic filter
Applied to the optical signal processing system using single mode optical fiber.
Description of the drawings
In order to make the purpose, technical scheme and advantage of invention clearer, the application is made into one below in conjunction with attached drawing
The detailed description of step, wherein：
Fig. 1 is the acousto-optic vector correlation figure in conventional filters；
Fig. 2 is the non-line polarisation crystal spectroscopy scheme in conventional filters；
Fig. 3 is a kind of structure diagram for polarizing unrelated optical fiber acousto-optic filter disclosed in the present application；
Fig. 4 is the table electrode schematic diagram of acousto-optic block in the application；
Fig. 5 is the sound field schematic diagram in acousto-optic block in the application；
Fig. 6 is a kind of coupling schematic diagram for polarizing unrelated optical fiber acousto-optic filter disclosed in the present application；
Fig. 7 be the unrelated optical fiber acousto-optic filter of polarization in the application in application process with the relation schematic diagram of other devices.
The correspondence of label in attached drawing is：First single mode optical fiber 1, the first polarization beam apparatus 2, the first polarization maintaining optical fibre 3,
Second polarization maintaining optical fibre 31, first collimator 4, the second collimator 41, match circuit 7, acousto-optic block 5, third collimator the 42, the 4th
Collimator 43, third polarization maintaining optical fibre 32, the 4th polarization maintaining optical fibre 33, the second polarization beam apparatus 21, the second single mode optical fiber 11, pedestal 8,
Radiating block 6.
Specific embodiment
The application is described in further detail below in conjunction with the accompanying drawings.
As shown in figure 3, this application discloses a kind of unrelated optical fiber acousto-optic filter of polarization, including the first single mode optical fiber 1, the
One polarization beam apparatus 2, the first polarization maintaining optical fibre 3, the second polarization maintaining optical fibre 31, first collimator 4, the second collimator 41, match circuit
7th, acousto-optic block 5, third collimator 42, the 4th collimator 43, third polarization maintaining optical fibre 32, the 4th polarization maintaining optical fibre 33, second polarization
21 and second single mode optical fiber 11 of beam splitter, wherein：
First single mode optical fiber 1 is shunted to the first polarization maintaining optical fibre 3 and the second polarization maintaining optical fibre 31 through the first polarization beam apparatus 2；
The output terminal of first polarization maintaining optical fibre 3 is connect with the input terminal of first collimator 4, the output terminal of the second polarization maintaining optical fibre 31 and
The input terminal connection of two collimators 41,4 and second collimator 41 of first collimator are arranged in parallel and towards the inputs of acousto-optic block 5
Side；
Two table electrodes are arranged in parallel on acousto-optic block 5, the sound wave that two table electrodes generate is respectively with passing through first collimator 4
And second collimator 41 inject the light of acousto-optic block 5 acoustic optic interaction occur, two table electrodes are connect with match circuit 7；
42 and the 4th collimator 43 of third collimator is arranged in parallel and towards the outlet side of acousto-optic block 5, acoustic optic interaction occurs
Light afterwards is inputted respectively by the slow axis of 42 and the 4th collimator 43 of third collimator；
Third collimator 42 is connect with third polarization maintaining optical fibre 32, and the 4th collimator 43 is connect with the 4th polarization maintaining optical fibre 33, and third is protected
Polarisation fibre 32 and the 4th polarization maintaining optical fibre 33 are combined through the second polarization beam apparatus 21 to the second single mode optical fiber 11.
Compared with using the optical filter of a single-mode polarization maintaining fiber in the prior art, the unrelated optical fiber of polarization disclosed in the present application
Acousto-optic filter uses the first polarization beam apparatus 2 by 1 branch of the first single mode optical fiber for the first polarization maintaining optical fibre 3 and the second polarization maintaining optical fibre
31, two beam diffraction lights are simultaneously into acousto-optic block 5, as shown in Figures 4 and 5, in the sound wave sent out of two bar shaped table electrodes
Effect is lower to occur acoustic optic interaction simultaneously, later again by the second polarization beam apparatus 21 by 32 and the 4th polarization-maintaining light of third polarization maintaining optical fibre
33 combining of fibre is the second single mode optical fiber 11, realizes the coupling of two-way light, it is achieved thereby that being handled while two-way light, and
And due to can all be handled two-way light simultaneously and close beam, solve in the prior art, only processing all the way light when because
The variation of the polarization state of light can cause the intensity of processed light to change, so as to the problem of unstable occur.Electrode is sound
A part for light block, lead are welded on acousto-optic block on 5 electrodes and match circuit 7, so as to connection electrode and match circuit
7。
When it is implemented, polarizing unrelated optical fiber acousto-optic filter further includes radiating block 6, wherein：
Radiating block 6 is arranged on acousto-optic block 5, and match circuit 7 is arranged on radiating block 6.
Radiating block 6 between match circuit 7 and acousto-optic block 5 is set, the work for reducing entire optical filter temperature can be played
With, and make match circuit 7 is not direct to be contacted with acousto-optic block 5, circuit is avoided to be heated so as to break down, improve optical filter
The stability of work.
When it is implemented, polarizing unrelated optical fiber acousto-optic filter further includes pedestal 8, wherein：
Acousto-optic block 5 is arranged on pedestal 8, and radiating block 6 is mounted on pedestal 8 and is connect with acousto-optic block 5, and radiating block 6 is used for
Acousto-optic block 5 is fixed on pedestal 8.
Acousto-optic block 5 is fixed on by radiating block 6 on pedestal 8, and radiating block 6 plays the role of fixed acousto-optic block 5.
Disclosed herein as well is a kind of assembly methods for polarizing unrelated optical fiber acousto-optic filter, polarize unrelated optical fiber acousto-optic filter
The assembly method of light device includes the following steps for assembling the unrelated optical fiber acousto-optic filter of above-mentioned polarization：
Two table electrodes are connect with match circuit 7；
The frequency parameter of ultrasonic wave matches after being converted on match circuit 7 to the electroacoustic of acousto-optic block 5；
Connect the first single mode optical fiber 1, the first polarization beam apparatus 2, the first polarization maintaining optical fibre 3, the second polarization maintaining optical fibre 31, first collimator
4th, the second collimator 41, third collimator 42, the 4th collimator 43, third polarization maintaining optical fibre 32, the 4th polarization maintaining optical fibre 33, second are inclined
Shake 21 and second single mode optical fiber 11 of beam splitter；
As shown in fig. 6, applying operating voltage, the polarization state for the light that first collimator 4 exports is adjusted, exports first collimator 4
Light be horizontally or vertically linearly polarized light, then deflecting first collimator 4 makes first collimator 4 that acousto-optic occur with acousto-optic block 5
Interaction, adjusting the position of third collimator 42 makes diffraction polarization light be coupled into the slow axis of third collimator 42 completely, has coupled
Into rear fixed first collimator 4 and third collimator 42；
Apply operating voltage, adjust the polarization state of the light of the second collimator 41 output, it is water to make the light that the second collimator 41 exports
Flat or perpendicular linear polarization light, then deflecting the second collimator 41 makes the second collimator 41 that acoustic optic interaction occur with acousto-optic block 5,
Adjusting the position of the 4th collimator 43 makes to be coupled into the slow axis of the 4th collimator 43 completely from the light that acousto-optic block 5 projects, coupling
The second collimator 41 and the 4th collimator 43 are fixed after the completion；
The opposing coupler position of third collimator 42 and the 4th collimator 43 relative to acousto-optic block 5 is adjusted, ensures that two-way light exists
The consistency of delay during coupling.
It is to meet Fig. 1 institutes that deflection first collimator 4, which makes first collimator 4 that acoustic optic interaction occur with acousto-optic block 5,
The vector correlation shown.Adjusting the position of third collimator 42 makes diffraction linearly polarized light be coupled into the slow of third collimator 42 completely
Axis after first collimator 4 regulates, meets Fig. 1 vector correlations, and diffraction light shooting angle is certain, and third collimator 42 is logical
Toning regulating device carry out five dimension adjust can be coupled, with reference to polarimeter can detect whether enter slow axis, do not continue then into
Row is corresponding to be adjusted.The opposing coupler position of third collimator 42 and the 4th collimator 43 relative to acousto-optic block 5 is adjusted, is ensured
The consistency of delay of the two-way light in coupling, 41 opposite incoming positions of same 4 and second collimator of first collimator that is delayed are related,
Essence is exactly that light wave is consistent with the time of sound wave generation interaction, i.e. 4 and second collimator of first collimator, 41 incoming position
It is consistent relative to the distance in two beam Acoustic Wave Propagation directions.It is mainly driven by same driver in real work, is sent out by signal
Raw device sends out electric signal access driver signal interface, exports soft exchange photodetector, delay time is tested by oscillograph.
After first collimator 4 and third collimator 42 fix, the second collimator 41 and the 4th collimator 43 are adjusted relative to acousto-optic
5 position of block can ensure time-delay consistency, as shown in Figure 7.
When it is implemented, polarizing unrelated optical fiber acousto-optic filter further includes radiating block 6, radiating block 6 is arranged on acousto-optic block 5
On, match circuit 7 is arranged on radiating block 6；The assembly method for polarizing unrelated optical fiber acousto-optic filter further includes and pacifies radiating block 6
On acousto-optic block 5, match circuit 7 is mounted on radiating block 6.
When it is implemented, polarizing unrelated optical fiber acousto-optic filter further includes pedestal 8, acousto-optic block 5 is arranged on pedestal 8,
Radiating block 6 is mounted on pedestal 8 and is connect with acousto-optic block 5, and radiating block 6 is used to acousto-optic block 5 being fixed on pedestal 8；Partially
The assembly method of unrelated optical fiber acousto-optic filter of shaking further includes and is fixed on acousto-optic block 5 on pedestal 8 by radiating block 6.
5 main material of acousto-optic block is tellurium dioxide crystal in this application, also double with acoustooptical effect including other
Refracting crystal.
Finally illustrate, above example is only to illustrate the technical solution of the application and unrestricted, although passing through ginseng
The application is described according to the preferred embodiment of the application, it should be appreciated by those of ordinary skill in the art that can
Various changes are made to it in the form and details, the application for being limited without departing from the appended claims
Spirit and scope.
Claims (6)
1. a kind of unrelated optical fiber acousto-optic filter of polarization, which is characterized in that including the first single mode optical fiber, the first polarization beam apparatus,
First polarization maintaining optical fibre, the second polarization maintaining optical fibre, first collimator, the second collimator, match circuit, acousto-optic block, third collimator,
4th collimator, third polarization maintaining optical fibre, the 4th polarization maintaining optical fibre, the second polarization beam apparatus and the second single mode optical fiber, wherein：
First single mode optical fiber is shunted to first polarization maintaining optical fibre and second polarization-maintaining through first polarization beam apparatus
Optical fiber；
The output terminal of first polarization maintaining optical fibre is connect with the input terminal of the first collimator, second polarization maintaining optical fibre it is defeated
Outlet is connect with the input terminal of second collimator, the first collimator and second collimator is arranged in parallel and direction
The input side of the acousto-optic block；
Be arranged in parallel with two table electrodes on the acousto-optic block, the sound wave that two table electrodes generate respectively with described in process
Acoustic optic interaction occurs for the light that first collimator and second collimator inject the acousto-optic block, two table electrodes with
The match circuit connection；
The third collimator is arranged in parallel with the 4th collimator and towards the outlet side of the acousto-optic block, acousto-optic occurs
Light after interaction is inputted respectively by the slow axis of the third collimator and the 4th collimator；
The third collimator is connect with the third polarization maintaining optical fibre, and the 4th collimator connects with the 4th polarization maintaining optical fibre
It connects, the third polarization maintaining optical fibre and the 4th polarization maintaining optical fibre are combined through second polarization beam apparatus to second single-mode optics
It is fine.
2. unrelated optical fiber acousto-optic filter is polarized as described in claim 1, which is characterized in that the unrelated optical fiber acousto-optic of polarization
Optical filter further includes radiating block, wherein：
The radiating block is arranged on the acousto-optic block, and the match circuit is arranged on the radiating block.
3. unrelated optical fiber acousto-optic filter is polarized as claimed in claim 2, which is characterized in that the unrelated optical fiber acousto-optic of polarization
Optical filter further includes pedestal, wherein：
The acousto-optic block is arranged on the pedestal, and the radiating block is mounted on the pedestal and connects with the acousto-optic block
It connects, the radiating block is used to the acousto-optic block being fixed on the pedestal.
A kind of 4. assembly method for polarizing unrelated optical fiber acousto-optic filter, which is characterized in that the unrelated optical fiber acousto-optic filter of polarization
The assembly method of light device polarizes unrelated optical fiber acousto-optic filter as described in claim 1 for assembling, and includes the following steps：
Two table electrodes are connect with the match circuit；
The frequency parameter of ultrasonic wave matches after being converted on the match circuit to the electroacoustic of the acousto-optic block；
Connect first single mode optical fiber, first polarization beam apparatus, first polarization maintaining optical fibre, the second polarization-maintaining light
Fine, described first collimator, second collimator, the third collimator, the 4th collimator, the third polarization-maintaining light
Fine, described 4th polarization maintaining optical fibre, second polarization beam apparatus and second single mode optical fiber；
Apply operating voltage, adjust the polarization state of the light of the first collimator output, make the light of the first collimator output
For horizontally or vertically linearly polarized light, then deflecting the first collimator makes the first collimator occur with the acousto-optic block
Acoustic optic interaction, adjusting the position of the third collimator makes diffraction linearly polarized light be coupled into the slow of the third collimator completely
Axis, the fixed first collimator and the third collimator after the completion of coupling；
Apply operating voltage, adjust the polarization state of the light of the second collimator output, make the light of the second collimator output
For horizontally or vertically linearly polarized light, then deflecting second collimator makes second collimator occur with the acousto-optic block
Acoustic optic interaction, adjusting the position of the 4th collimator makes to be coupled into the described 4th completely from the light that the acousto-optic block projects
The slow axis of collimator, fixed second collimator and the 4th collimator after the completion of coupling；
Opposing coupler position of the third collimator with the 4th collimator relative to the acousto-optic block is adjusted, ensures two
The consistency of delay of the road light in coupling.
5. the assembly method of unrelated optical fiber acousto-optic filter is polarized as claimed in claim 4, which is characterized in that the polarization nothing
It closes optical fiber acousto-optic filter and further includes radiating block, the radiating block is arranged on the acousto-optic block, the match circuit setting
On the radiating block；The assembly method of the unrelated optical fiber acousto-optic filter of polarization is further included is mounted on institute by the radiating block
It states on acousto-optic block, the match circuit is mounted on the radiating block.
6. the assembly method of unrelated optical fiber acousto-optic filter is polarized as claimed in claim 5, which is characterized in that the polarization nothing
It closes optical fiber acousto-optic filter and further includes pedestal, the acousto-optic block is arranged on the pedestal, and the radiating block is mounted on described
It is connect on pedestal and with the acousto-optic block, the radiating block is used to the acousto-optic block being fixed on the pedestal；It is described
Polarize unrelated optical fiber acousto-optic filter assembly method further include the acousto-optic block be fixed on by the radiating block it is described
On pedestal.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810089261.3A CN108132549A (en) | 2018-01-30 | 2018-01-30 | It is a kind of to polarize unrelated optical fiber acousto-optic filter and its assembly method |
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| CN201810089261.3A CN108132549A (en) | 2018-01-30 | 2018-01-30 | It is a kind of to polarize unrelated optical fiber acousto-optic filter and its assembly method |
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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