CN105301699B - Fiber delay time device - Google Patents
Fiber delay time device Download PDFInfo
- Publication number
- CN105301699B CN105301699B CN201510849698.9A CN201510849698A CN105301699B CN 105301699 B CN105301699 B CN 105301699B CN 201510849698 A CN201510849698 A CN 201510849698A CN 105301699 B CN105301699 B CN 105301699B
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- China
- Prior art keywords
- delay time
- flap
- circular column
- time device
- optical fiber
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
- G02B6/2804—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers
- G02B6/2861—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers using fibre optic delay lines and optical elements associated with them, e.g. for use in signal processing, e.g. filtering
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Theoretical Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Light Control Or Optical Switches (AREA)
Abstract
The present invention relates to a kind of fiber delay time device, which includes：The flap-type circular column being combined by multiple arcs block, optical fiber can be circumferentially wrapped on the periphery wall of flap-type circular column；And adjustment mechanism.Wherein adjustment mechanism, which is configured to actuate each arc block, is radially displaced outwardly so that the flap-type circular column that the optical fiber being wrapped on the periphery wall of the flap-type circular column can be radially expanded stretches.The fiber delay time device of the present invention can stretch optical fiber and continuously change the delay time of the optical fiber so that the adjustment of delay time is the adjustment of conitnuous forms.
Description
Technical field
The present invention relates to fibre delay line device arts, especially a kind of optical fiber for fibre delay line device to prolong
When device.
Background technology
Fibre delay line device is widely used fibre optical sensor, optical encoder, optical decoder or optical buffer etc. and sets
In standby.The fiber delay time device being made of optical fiber is the core component of fibre delay line device, the adjusting range of delay time
Directly determine the performance of fibre delay line device.
Delay time depends primarily on the length of optical fiber and the refractive index of optical fiber.The optical fiber of existing fibre delay line device
The optical fiber that time-delay mechanism is mainly led to select different length or Different lightwave by cascaded optical switch and (influences refractive index), to
To different delay times.But since the quantity of the delay time of the fiber delay time device and the quantity of optical fiber are equal, delay
The numerical value of time and the length of optical fiber correspond so that the adjustment of delay time is the adjustment of discrete form.
For example, a kind of existing fiber delay time device being made of optical fiber A and optical fiber B, when the corresponding delays of wherein optical fiber A
Between be X, optical fiber B corresponding delay times be Y, when the fiber delay time device selectes optical fiber A by cascaded optical switch, optical fiber prolongs
When device delay time be X, and when the fiber delay time device selectes optical fiber B by cascaded optical switch, fiber delay time device
Delay time be Y, due to cascaded optical switch without other select, cause the adjusting range of fiber delay time device to only include
This two discrete points of delay time X and delay time Y, can not obtain any delay time between X to Y.
Invention content
Based on the above issues, the object of the present invention is to provide a kind of fiber delay time device, optical fiber can be stretched
And continuously change the delay time of the optical fiber so that the adjustment of delay time is the adjustment of conitnuous forms.
The present invention provides a kind of fiber delay time devices comprising：The flap-type circular column being combined by multiple arcs block, optical fiber
It can circumferentially be wrapped on the periphery wall of the flap-type circular column；And adjustment mechanism.The wherein described adjustment mechanism setting
It is radially displaced outwardly for each arc block can be actuated so that be wrapped on the periphery wall of the flap-type circular column
The flap-type circular column that optical fiber can be radially expanded stretches.
Further, the adjustment mechanism includes the piezoelectric ceramic body being arranged in the flap-type circular column, for actuating
Each arc block, which radially synchronizes, to be displaced outwardly.
Further, the shape of the piezoelectric ceramic body is hollow cylindrical.
Further, the fiber delay time device further includes that the adjustment mechanism includes：For carrying the flap-type annular
The pedestal of column；The guide rail being located between the arc block and the pedestal；And the fixed multiple pullings set on the base
Component.Wherein, multiple described described its diameter of guide rail upper edge for pulling component that can pull the corresponding arc block respectively at place
To being displaced outwardly.
Further, described that component is pulled to include the fixed stepper motor set on the base and while connecting the step
The transmission component of the output shaft of stepper motor and the arc block.
Further, the transmission component is lead screw assembly.
Further, the radian of each arc block is equal.
Further, the quantity of the arc block is 4.
Further, the periphery wall of the flap-type circular column is equipped with spiral groove, the spiral groove circumferentially spiral shell
It is rotating to surround on the periphery wall of the flap-type circular column for winding the optical fiber.
Further, the fiber delay time device further includes being connected with the adjustment mechanism and capable of controlling the optical fiber
The control system of tensile elongation.
The flap-type circular column of the fiber delay time device of the present invention is combined by multiple arcs block, the adjustment of the fiber delay time device
Mechanism can actuate each arc block and is moved radially outward along its (referring to arc block) so that flap-type circular column can generate diameter
To expansion, to stretch the optical fiber being wrapped on the periphery wall of the flap-type circular column.The fiber delay time device of the present invention exists
The delay time of the optical fiber can continuously be changed during stretching optical fiber so that the adjustment of the delay time of fiber delay time device
It is the adjustment of conitnuous forms.
In addition, the fiber delay time device of the present invention can by piezoelectric ceramic body come push flap-type circular column generate it is continuous,
High-precision and small-scale radial dilatation so that the delay time of optical fiber generates continuous, high-precision and small range changes.Meanwhile
The fiber delay time device of the present invention pulls flap-type circular column to generate continuous, large-scale radial dilatation by pulling component, makes
The delay time for obtaining optical fiber generates continuous and changes on a large scale.
In addition, the structure of the fiber delay time device of the present invention is simple, and it is safe and reliable, it is easy to manufacture, to just
In practice and extension application.
Description of the drawings
The invention will be described in more detail below based on embodiments and refering to the accompanying drawings.Wherein：
Fig. 1 is the fiber delay time device according to the embodiment of the present invention；And
Fig. 2 shows the flap-type circular column and piezoelectric ceramic body of fiber delay time device shown in FIG. 1.
Identical component uses identical reference numeral in the accompanying drawings.Attached drawing is not drawn according to actual ratio.
Specific implementation mode
The present invention is described in detail below in conjunction with the accompanying drawings.
Fig. 1 shows fiber delay time device 10 according to an embodiment of the invention.The fiber delay time device 10 can not only answer
For in fibre delay line device, can also be applied in the equipment that other need stretching optical fiber.
As shown in Figure 1, the fiber delay time device 10 includes the flap-type circular column 2 being combined by multiple arcs block 2a.Flap-type ring
Shape column 2 can be made of metal material or resin material, but it is preferred that be made of Steel material.Wherein, the radian of each arc block 2a
It is preferably equal, in order to manufacture, reduce production cost.In preferred embodiment shown in Fig. 1, the quantity of arc block is
4, the central angle corresponding to each arc block 2a is 90 °.Optical fiber can circumferentially be wrapped in the periphery wall of the flap-type circular column 2
On, so that flap-type circular column 2 after being radially expanded stretches it.
Meanwhile the fiber delay time device 10 further includes adjustment mechanism.Adjustment mechanism can actuate each arc block 2a and (refer to along it
For arc block 2a) radial synchronize be displaced outwardly.In the case where adjustment mechanism actuates, each arc block 2a can be moved radially continuously out
It is dynamic so that the outer profile of flap-type circular column 2 can also carry out continuous radial dilatation, and flap-type is circumferentially wrapped in stretch
Optical fiber on the periphery wall of circular column 2.Therefore, fiber delay time device 10 of the invention can connect during stretching optical fiber
Change the delay time of the optical fiber continuously so that the adjustment of the delay time of fiber delay time device 10 is the adjustment of conitnuous forms.
It should be noted that the maximum tension length that optical fiber allows depends primarily on the total length of optical fiber material and optical fiber,
Those skilled in the art can be arranged as required to tensile elongation of the adjustment mechanism to optical fiber, but the maximum allowed no more than optical fiber
Tensile elongation.
Optical fiber probably generates spacing distance (similar screw pitch) during the winding process, and the spacing distance is in stretching optical fiber
It will gradually reduce in the process, and influence the tensile elongation of optical fiber.In order to avoid this is adversely affected, in the periphery of flap-type circular column 2
It can be equipped with spiral groove 2b on wall, refer to Fig. 2.Spiral groove 2b is circumferentially spirally around the periphery wall of flap-type circular column
On, for accommodating the optical fiber being wrapped on the periphery wall of flap-type circular column 2.In this way, the spacing distance of optical fiber begins
The screw pitch being equal to eventually between spiral groove 2b so that the spacing distance between optical fiber can not generate change, so that it is guaranteed that adjustment mechanism pair
The stretching of optical fiber can maximize.
In this embodiment, adjustment mechanism includes the piezoelectric ceramic body 5 being arranged in flap-type circular column 2.In piezoelectric ceramics
After body 5 is powered, the overall volume of piezoelectric ceramic body 5 will continuously expand, so as to continuous and accurately push each arc block
2a is radially synchronized and is displaced outwardly so that and flap-type circular column 2 can generate continuous, high-precision and small-scale radial dilatation,
Change the delay time of optical fiber so as to continuous, high-precision and small range.The shape of piezoelectric ceramic body 5 is chosen as prism
Shape, cylinder or hollow cylindrical etc., but preferably hollow cylindrical.The piezoelectric ceramic body 5 of hollow cylindrical can not only
It pushes each arc block 2a radially to synchronize to be displaced outwardly, but also material can be saved, reduce cost.
In this embodiment, adjustment mechanism further include pedestal 1 for carrying flap-type circular column 2 and be located at arc block 2a with
Guide rail between pedestal 1, and the fixed multiple pulling components 3 being located on pedestal 1.Pedestal 1 and guide rail can be by metal materials
It is made, guide rail is for guiding each arc block 2a radially to move back and forth.Guide rail is chosen as existing conventional guide rail, and guide rail prolongs
Long line passes through the axis of flap-type circular column 2, and radially positioned at flap-type circular column 2.Wherein, component 3 and arc block 2a is pulled
It is aligned one by one, and positioned at the outside of arc block 2a so that multiple pulling components 3 can pull corresponding arc block 2a at place respectively
Guide rail upper edge its be moved radially outward.When multiple pulling components 3 pull corresponding arc block 2a in the guide rail upper edge at place respectively
When it is moved radially outward, the outer profile of flap-type circular column 2 carries out continuous, large-scale radial dilatation by radially outward,
So that the delay time of optical fiber generates continuous and changes on a large scale.Although the adjustment mechanism in attached drawing is mainly by piezoelectric ceramic body
5 are constituted with pulling component 3, but it also by piezoelectric ceramic body 5 and can pull 3 alternative one of component constitute, or even can be by other
Component is constituted.
Component 3 is pulled to include the fixed stepper motor 31 being located on pedestal 1 and while connecting the output shaft of stepper motor 31
With the transmission component 32 of arc block 2a.Stepper motor 31 in the case that non-overload velocity of rotation depend on pulse signal frequency and
Umber of pulse, without being influenced by load variation, therefore adjustment mechanism can successfully actuate each arc block 2a and radially synchronize
It is displaced outwardly.Wherein, stepper motor 31 can also be replaced by common electric machine, but common electric machine is used to be difficult to realize arc block 2a's
Synchronizing moving.Transmission component 32 is chosen as lead screw assembly or rack-and-pinion etc., if but if it is selected as lead screw assembly, transmission
Component 32 has higher transmission accuracy.It is contemplated that above-mentioned pulling component 3 is also chosen as linear motor or hydraulic cylinder etc.
The mechanism of linear motion can be generated.
In a preferred embodiment, fiber delay time device 10 further include be connected with adjustment mechanism and can control it is described
The control system of the tensile elongation of optical fiber.In particular, the control system can control the degrees of expansion of piezoelectric ceramic body 5,
The movement for controlling stepper motor 31 simultaneously, to control the tensile elongation of optical fiber.The control system is mainly by computer and control
Device composition processed, controller includes Motor Control part and piezoelectric ceramics control section.Wherein, Motor Control part and piezoelectricity
Ceramic control section is all well known to those skilled in the art, and no further details to be given herein.
In summary, fiber delay time device 10 of the invention can stretch optical fiber and continuously change the optical fiber
Delay time so that the adjustment of the delay time of fiber delay time device 10 is the adjustment of conitnuous forms.
Although by reference to preferred embodiment, invention has been described, the case where not departing from the scope of the present invention
Under, various improvement can be carried out to it and can replace component therein with equivalent.Especially, as long as there is no structures to rush
Prominent, items technical characteristic mentioned in the various embodiments can be combined in any way.The invention is not limited in texts
Disclosed in specific embodiment, but include all technical solutions fallen within the scope of the appended claims.
Claims (9)
1. a kind of fiber delay time device, which is characterized in that including：
The flap-type circular column being combined by multiple arcs block, optical fiber can circumferentially be wrapped in the periphery wall of the flap-type circular column
On；And
Adjustment mechanism, wherein the adjustment mechanism is configured to actuate each arc block and radially be displaced outwardly so that
The flap-type circular column that the optical fiber being wrapped on the periphery wall of the flap-type circular column can be radially expanded stretches；
The adjustment mechanism includes：
Pedestal for carrying the flap-type circular column；
The guide rail being located between the arc block and the pedestal；And
The fixed multiple pulling components set on the base；
Wherein, multiple pulling components can pull respectively the corresponding arc block on the guide rail at place radially
It is displaced outwardly.
2. fiber delay time device according to claim 1, which is characterized in that the adjustment mechanism includes being arranged in the valve
Piezoelectric ceramic body in formula circular column is radially synchronized for actuating each arc block and is displaced outwardly.
3. fiber delay time device according to claim 2, which is characterized in that the shape of the piezoelectric ceramic body is hollow circle
Cylindricality.
4. fiber delay time device according to claim 1, which is characterized in that the pulling component includes described in fixed be located at
The transmission component of stepper motor and the output shaft and the arc block that connect the stepper motor simultaneously on pedestal.
5. fiber delay time device according to claim 4, which is characterized in that the transmission component is lead screw assembly.
6. the fiber delay time device according to any one of claim 1 to 5, which is characterized in that each arc block
Radian is equal.
7. fiber delay time device according to claim 6, which is characterized in that the quantity of the arc block is 4.
8. the fiber delay time device according to any one of claim 1 to 5, which is characterized in that the flap-type circular column
Periphery wall is equipped with spiral groove, and the spiral groove is circumferentially spirally surround on the periphery wall of the flap-type circular column,
For winding the optical fiber.
9. the fiber delay time device according to any one of claim 1 to 5, which is characterized in that further include and the adjustment
Mechanism is connected and can control the control system of the tensile elongation of the optical fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510849698.9A CN105301699B (en) | 2015-11-27 | 2015-11-27 | Fiber delay time device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510849698.9A CN105301699B (en) | 2015-11-27 | 2015-11-27 | Fiber delay time device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105301699A CN105301699A (en) | 2016-02-03 |
| CN105301699B true CN105301699B (en) | 2018-07-20 |
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ID=55199165
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510849698.9A Expired - Fee Related CN105301699B (en) | 2015-11-27 | 2015-11-27 | Fiber delay time device |
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| Country | Link |
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| CN (1) | CN105301699B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108508594B (en) * | 2018-06-08 | 2024-06-21 | 中国人民解放军国防科技大学 | High resonant frequency optical fiber phase modulator based on piezoelectric ceramics |
| CN114114718B (en) * | 2021-10-20 | 2024-01-30 | 中国电子科技集团公司第十三研究所 | Time delay control device for optical fiber |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6215941B1 (en) * | 1998-02-12 | 2001-04-10 | Oki Electric Industry Co., Ltd. | Optical delay time adjuster and optical time-division multiplexer |
| CN101329427A (en) * | 2007-09-06 | 2008-12-24 | 北京高光科技有限公司 | Fiber stretcher apparatus |
| CN101561564A (en) * | 2009-05-07 | 2009-10-21 | 上海交通大学 | Mechanical precise adjustable optical fibre delay device |
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8036503B2 (en) * | 2009-02-19 | 2011-10-11 | DFS Fitel LLC | Low loss optical delay line using a microfiber coil |
-
2015
- 2015-11-27 CN CN201510849698.9A patent/CN105301699B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6215941B1 (en) * | 1998-02-12 | 2001-04-10 | Oki Electric Industry Co., Ltd. | Optical delay time adjuster and optical time-division multiplexer |
| CN101329427A (en) * | 2007-09-06 | 2008-12-24 | 北京高光科技有限公司 | Fiber stretcher apparatus |
| CN101561564A (en) * | 2009-05-07 | 2009-10-21 | 上海交通大学 | Mechanical precise adjustable optical fibre delay device |
| 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 |
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| Publication number | Publication date |
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| CN105301699A (en) | 2016-02-03 |
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Granted publication date: 20180720 Termination date: 20181127 |