CN102944930B - Adjusting device of optical fiber polarization controller - Google Patents
Adjusting device of optical fiber polarization controller Download PDFInfo
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- CN102944930B CN102944930B CN201210442437.1A CN201210442437A CN102944930B CN 102944930 B CN102944930 B CN 102944930B CN 201210442437 A CN201210442437 A CN 201210442437A CN 102944930 B CN102944930 B CN 102944930B
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- polarization controller
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Abstract
The invention relates to an adjusting device of an optical fiber polarization controller, which belongs to the technical field of optical fiber communication. The adjusting device comprises the optical fiber polarization controller, an engraving thumbwheel, a locking fixture, an external panel and a base bracket. According to the adjusting device, the engraving thumbwheel which is exposed out of the external panel is adjusted to rotate, so as to drive an optical fiber ring piece to rotate, external adjustment and quantitative continuous control of the optical fiber ring piece of the optical fiber polarization controller are realized, the repeatability and the adjusting efficiency of the optical fiber polarization controller are increased, and the locking fixture is adopted, so that the long-term working stability of the optical fiber polarization controller is improved. Additionally, the adjusting device of the optical fiber polarization controller provided by the invention has the characteristics of adjusting space saving and low cost, and the adjusting device is especially suitable for controlling the polarization state of light waves in laboratories.
Description
Technical field
The invention belongs to technical field of optical fiber communication, be specifically related to a kind of regulating device of optical fiber polarization controller.
Background technology
Developing rapidly of Networks of Fiber Communications proposes increasing requirement to optical information processing technology, utilize the super fast response characteristic of nonlinear effect in optical fiber or semiconductor material can realize high-speed optical signal processing, but nearly all full photoreduction process is all relevant to the polarization characteristic of light wave.For example, adopt polarisation multiplex system, the transmission capacity of optical fiber telecommunications system can be promoted to one times.In Fibre Optical Communication Technology research, effectively control optical polarization, must be by means of various Polarization Controllers.At present, conventional Polarization Controller has: the optical fiber polarization controller that utilizes the birefringence effect due to fibre-optical bending to make, the squash type Polarization Control of making by the mode of extruding optical fiber, wave plate formula Polarization Controller based on birefringece crystal, utilizes the effects such as electric light/magneto-optic and automatically controlled Polarization Controller of making etc.
In conventional Polarization Controller, optical fiber polarization controller is the one of simple cheap, can realize the conversion of low-loss random polarization state, is widely used in the control of laboratory to optical polarization.Optical fiber polarization controller is made up of three adjustable optical fiber ring plates conventionally, is tied with a few circle optical fiber in each optical fiber ring plate; Three optical fiber ring plates produce birefringence effect under effect of stress, produce respectively corresponding phase delay in orthogonal polarization orientation, are equivalent to respectively quarter-wave plate, 1/2nd wave plates, quarter-wave plate.By adjusting the position angle of optical fiber ring plate, can realize the conversion from any input polarization to any output polarization state.Certainly, optical fiber polarization controller also can be made up of two optical fiber ring plates.
Current optical fiber polarization controller, to obtain different optical polarizations by the mode of manual rotation optical fiber ring plate, exist in actual applications following not enough: (1) optical fiber polarization controller due to do not have can reference scale marker, when spin fiber ring plate, can only regulate with feeling, while repeating polarization state before, regulate poor efficiency, be difficult to all optical fiber ring plates to recall to original position simultaneously, say nothing of and utilize optical fiber polarization controller to produce the polarization state of appointment; (2) place for a long time optical fiber polarization controller, its optical fiber ring plate (under heeling condition) can slowly depart from original position at Action of Gravity Field, under the loosening situation of this situation screw fastener after repeatedly using, more easily occur, be difficult to the polarization state that keeps in a long time fixing, thereby affect the performance of optical fiber telecommunications system; (3) optical fiber polarization controller regulates the angle of optical fiber ring plate by manual torsion, is unsuitable for directly carrying out erecting of panel (outside adjusting); When required optical fiber polarization controller is more or placement space during than comparatively dense, the twisted fiber ring plate of stretching out one's hand is easier to touching or interferes with other device, therefore often needs more chassis space.
Summary of the invention
The object of the invention is the problems referred to above in order to solve existing fiber Polarization Controller, proposed a kind of regulating device of optical fiber polarization controller.Adopt optical fiber polarization controller regulating device provided by the invention, the polarization state that can improve optical fiber polarization controller regulates efficiency, improves the long-term working stability of optical fiber polarization controller; The regulating device of optical fiber polarization controller provided by the invention also has the adjusting of saving space and feature with low cost simultaneously, is specially adapted to the control of laboratory to optical polarization.
Technical scheme of the present invention is:
A regulating device for optical fiber polarization controller, as shown in Figures 1 to 5, at least comprises: optical fiber polarization controller, marking thumb wheel 3, exterior panel 4 and base support 5.Described optical fiber polarization controller at least has 2, one optical fiber ring plates of an optical fiber ring plate and is equipped with a marking thumb wheel 3.Described marking thumb wheel 3 is annulus wheel-like structure, the optical fiber ring plate 2 of optical fiber polarization controller is positioned at marking thumb wheel 3, optical fiber ring plate 2 place planes and the marking thumb wheel 3 place planes of optical fiber polarization controller are perpendicular, marking thumb wheel 3 interfixes with optical fiber polarization controller optical fiber ring plate 2, rotate marking thumb wheel 3 and can drive optical fiber ring plate 2 to rotate, and the rotation of marking thumb wheel 3 keeps overlapping with the rotation of optical fiber polarization controller optical fiber ring plate 2; Outer edge surface or the side of marking thumb wheel indicate scale, and scale unit is angular unit or long measure, in order to demarcate the anglec of rotation or the swing offset of optical fiber ring plate.Described exterior panel 4 has rectangular window 41, and the part outer rim of marking thumb wheel is exposed from the rectangular window of exterior panel, is convenient to from the outside optical fiber ring plate that regulates of panel; On perforate panel, be carved with optical fiber ring plate rotation reading mark 42 near the appropriate location at rectangle opening edge, be convenient to determine the anglec of rotation or the swing offset of optical fiber ring plate.Described base support 5, for fixing whole regulating device, keeps the position relationship between each parts in regulating device.
The regulating device of optical fiber polarization controller provided by the invention also can be installed locking fixture 6 on perforate panel, for fixing marking thumb wheel and lock the polarization state of optical fiber polarization controller.Locking fixture 6 can be finely tuned left and right in panel plane, but can not move in marking thumb wheel 3 rotation directions, its contact arm is to clamp or the fixing marking thumb wheel of the mode of pressing (friction force between contact arm and marking thumb wheel make marking thumb wheel can in fixing state).
The regulating device of optical fiber polarization controller provided by the invention, drives optical fiber ring plate to rotate by marking thumb wheel, can easily and accurately control the anglec of rotation or the swing offset of optical fiber ring plate, thereby to the object of controlling guided wave polarization state in optical fiber.The employing of locking fixture can conveniently lock the output polarization state of optical fiber polarization controller, can effectively prevent that optical fiber ring plate (under heeling condition) is because the polarization state that Action of Gravity Field causes changes simultaneously, thereby greatly improve the job stability of fibre system.
According to marking thumb wheel physical dimension size, scale marker both can be positioned at the outer edge surface (being suitable for wider marking thumb wheel) of thumb wheel, also can be positioned at side (being suitable for the marking thumb wheel of wall thickness); Scale both can have been used angle, also can identify with arc length degree etc., as long as can demarcate uniquely the position of rotation of optical fiber ring plate.The more specific location information of marking thumb wheel can read take panel cut out edge as reference data the scale on marking thumb wheel, the various combination of these scale values is corresponding to different polarization states, thereby the adjusting efficiency that can effectively improve optical fiber polarization controller, obtains rapidly required polarization state.Therefore, the present invention has function that can re-adjustments polarization state.
Base support is used for supporting optical fiber polarization controller on the one hand; Be that the turning axle of optical fiber polarisation control optical fiber ring plate is raised on the other hand, marking thumb wheel can freely be rotated maximum magnitude, necessary revolution space is provided.Marking thumb wheel can the original range of adjustment of limit fibre ring plate.
In sum, the present invention has following beneficial effect:
1, the outside that the present invention has realized optical fiber polarization controller optical fiber ring plate by marking thumb wheel regulates and quantitatively stepless control, has greatly improved the repeatability of optical fiber polarization controller and has regulated efficiency.
2, by locking fixture is installed on perforate panel, optical fiber ring plate can be fixed on to assigned address, avoid the impact of deadweight simultaneously, thereby make polarization state keep the longer time, contribute to the long-term stability of fibre system.
3, perforate panel had both played the effect of protection optical fiber polarization controller, and the method for outside adjusting polarization state is provided again, can directly be installed on system equipment panel, was also suitable for forming independently apparatus, as formed Polarization Controller array etc.
4, when the present invention promotes the adjusting function of optical fiber polarization controller greatly, also having to save and regulate space, feature that cost is low, is the ideal chose of simple and easy control optical polarization.
Accompanying drawing explanation
Fig. 1 is the side structure schematic diagram of optical fiber polarization controller regulating device provided by the invention.
Fig. 2 is the fixed relationship of three ring optical fiber polarization controllers and marking thumb wheel.
Fig. 3 is two kinds of scale positions on marking thumb wheel.
Fig. 4 is a kind of locking fixture schematic diagram.
Fig. 5 is the front schematic view of the perforate panel of locking fixture.
Reference numeral: the 2nd, optical fiber ring plate, the 3rd, marking thumb wheel, the 4th, exterior panel, the 41st, the rectangular window on panel, the 42nd, the reading mark on panel, the 5th, fixed support, the 6th, locking fixture.
Embodiment
Below in conjunction with accompanying drawing and concrete embodiment, the invention will be further elaborated.
The Polarization Controller regulating device that the present invention proposes comprises: at least comprise: optical fiber polarization controller, marking thumb wheel, exterior panel and base support.Optical fiber polarization controller is made up of three adjustable optical fiber ring plates conventionally, in each optical fiber ring plate, be tied with a few circle optical fiber, stress birefrin can make to produce phase delay in orthogonal polarization orientation, is equivalent to respectively quarter-wave plate, 1/2nd wave plates, quarter-wave plate.By adjusting the position angle of optical fiber ring plate, can realize the conversion from any input polarization to any output polarization state.The key of Polarization Control is the orientation that regulates incident light polarization axle and wave plate main shaft, its control method is that optical fiber ring plate is rotated as axle center take bottom lever (optical fiber passes through from lever inside), now the space tracking of the point of the optical fiber ring plate other end is for take lever and optical fiber ring plate contact portion as the center of circle, and radius equals the circle of optical fiber ring plate diameter.Make a thumb wheel that can rotate around lever by actual this circle, and itself and optical fiber ring plate junction are fixed together, the turning axle of optical fiber ring plate vertically passes through marking thumb wheel center, just can regulate the attitude of optical fiber ring plate by rotation thumb wheel.Thumb wheel is marked with scale, relatively can draw the angle of optical fiber ring plate rotation with outside reference point, is called marking thumb wheel with the thumb wheel of scale.Scale both can be at the outer edge surface of marking thumb wheel, also can be in the side of marking thumb wheel.Marking thumb wheel outshot from perforate panel is beneficial to outside adjusting.Locking fixture is positioned on panel, and while keeping Polarization Control need to grow time, the contact arm of locking fixture clamps or presses thumb wheel, utilizes friction force to fix.Locking fixture can be finely tuned left and right in panel plane, but can not move in marking thumb wheel rotation direction.
With the concrete Polarization Controller regulating device of an example, the present invention is specifically described below.
(1) side schematic view of this device as shown in Figure 1, one end and the marking thumb wheel of optical fiber ring plate (the thick line section of black in figure) are fixed together, the other end is connected with lever, the turning axle (lever) of optical fiber ring plate vertically passes through marking thumb wheel center, optical fiber is assemblied in lever, and lever and optical fiber ring plate are by stent support.Scale can be at marking thumb wheel outer edge surface, also can be in side, and in this example, calibration system is positioned at the outer edge surface that regulates annulus.The rectangular window of the outstanding panel of part marking thumb wheel, and remainder is inside, can protect better like this Polarization Controller.Rotation marking thumb wheel has adjusted the position angle of optical fiber ring plate, and the angle turning over is read by the scale on marking thumb wheel, and panel provides the benchmark of reading.Locking fixture is above marking thumb wheel, and when marking thumb wheel is adjusted to suitable position, operation stationary installation, by optical fiber ring plate locking position, overcomes with this impact that deadweight brings, thereby realizes long polarization state control.
(2) as shown in Figure 2, optical fiber ring plate is take lever as turning axle for the position relationship of marking thumb wheel and optical fiber ring plate, and one end and marking thumb wheel are fixed, and the turning axle of optical fiber ring plate is with the disk of vertical marking thumb wheel, and by the center of circle of marking thumb wheel.
(3) as shown in Figure 3, its outer edge surface or side are marked with scale to the scale of marking thumb wheel, come the position of unique demarcation optical fiber ring plate, and the unit of scale can be the unit of angle or length etc.Regulate marking thumb wheel just can drive the rotation of optical fiber ring plate, change the position angle of optical fiber ring plate, thereby reach the object of controlling guided wave polarization state in optical fiber.In this example, scale is positioned at the outer edge surface of marking thumb wheel, take angle as unit.The anglec of rotation is defined as the angle of optical fiber ring plate and surface level, and when optical fiber ring plate level, reference point is pointed to 0 ° on marking thumb wheel, and while rotating like this marking thumb wheel, reading is exactly the anglec of rotation of optical fiber ring plate reality.
(4) locking fixture as shown in Figure 4, locks fixture by two contact arms in this example, and removable baffle plate two parts composition, on panel mounted externally, is positioned at outstanding marking thumb wheel top.Contact arm fits together with the form of common clip, the mode fixing marking thumb wheel of the contact arm of fixture to clamp, friction force between contact arm and marking thumb wheel makes the marking thumb wheel can be in fixing state, contact arm can be finely tuned left and right in panel plane, but can not move in marking thumb wheel rotation direction.Removable baffle plate can move up and down in panel, for controlling loosening and clamping of contact arm: move down baffle plate and block contact arm rear end, make it freely to open, thereby contact arm front end separates with marking thumb wheel, marking thumb wheel can freely be stirred; On move baffle plate and make it to separate with contact arm rear end, contact arm front end closes up and clamps marking thumb wheel, thereby has realized the locking of Polarization Control.
(5) as shown in Figure 5, a part of marking thumb wheel is outstanding from panel cut out for the front schematic view of the panel of locking fixture, and locking fixture is fixed on the panel that is positioned at marking thumb wheel top.Marking thumb wheel outside the outstanding perforate panel of rotation is the angle of adjustable fiber optic loop sheet, on panel, read in the surface level of mark (datum line) in place, the marking thumb wheel center of circle, the scale value on datum line marking thumb wheel pointed is exactly the anglec of rotation of optical fiber ring plate.Certainly, the contact arm of locking fixture also can be used as reference point.While keeping Polarization Control need to grow time, with locking fixture, marking thumb wheel is fixing.
The advantage of the optical fiber polarization controller that the present invention is relatively traditional is: the outside that (1) this device has been realized optical fiber polarization controller optical fiber ring plate sheet by marking thumb wheel regulates and quantitatively stepless control, has greatly improved the repeatability of optical fiber polarization controller and has regulated efficiency.(2) by locking fixture is installed on perforate panel, optical fiber ring plate sheet can be fixed on to assigned address, avoid the impact of deadweight simultaneously, thereby make polarization state keep the longer time, contribute to the long-term stability of fibre system.(3) perforate panel had both played the effect of protection optical fiber polarization controller, and the method for outside adjusting polarization state is provided again, can directly be installed on system equipment panel, was also suitable for forming independently apparatus, as formed Polarization Controller array etc.(4) when this device promotes the adjusting function of optical fiber polarization controller greatly, also having to save and regulate space, feature that cost is low, is the ideal chose of simple and easy control optical polarization.
Those of ordinary skill in the art should recognize, embodiment described here is in order to help those of ordinary skills to understand principle of the present invention, should be understood to that protection scope of the present invention is not limited to such special statement and examples of implementation.Those of ordinary skill in the art can make various other various concrete distortion and combinations that do not depart from essence of the present invention according to these technology enlightenments disclosed by the invention, and these distortion and combination are still in protection scope of the present invention.
Claims (2)
1. a regulating device for optical fiber polarization controller, at least comprises: optical fiber polarization controller, marking thumb wheel (3), exterior panel (4) and base support (5); Described optical fiber polarization controller at least has an optical fiber ring plate (2), and an optical fiber ring plate is equipped with a marking thumb wheel (3); Described marking thumb wheel (3) is annulus wheel-like structure, the optical fiber ring plate (2) of optical fiber polarization controller is positioned at marking thumb wheel (3), optical fiber ring plate (2) the place plane of optical fiber polarization controller and marking thumb wheel (3) place plane are perpendicular, marking thumb wheel (3) interfixes with optical fiber polarization controller optical fiber ring plate (2), rotate marking thumb wheel (3) and can drive optical fiber ring plate (2) rotation, and the rotation of marking thumb wheel (3) keeps overlapping with the rotation of optical fiber polarization controller optical fiber ring plate (2); Outer edge surface or the side of marking thumb wheel indicate scale, and scale unit is angular unit or long measure, in order to demarcate the anglec of rotation or the swing offset of optical fiber ring plate; Described exterior panel (4) has rectangular window (41), and the part outer rim of marking thumb wheel is exposed from the rectangular window of exterior panel, is convenient to from the outside optical fiber ring plate that regulates of exterior panel; On exterior panel, be carved with optical fiber ring plate rotation reading mark (42) near the appropriate location at rectangular window edge, be convenient to determine the anglec of rotation or the swing offset of optical fiber ring plate; Described base support (5), for fixing whole regulating device, keeps the position relationship between each parts in regulating device.
2. the regulating device of optical fiber polarization controller according to claim 1, is characterized in that, the regulating device of described optical fiber polarization controller also comprises locking fixture (6); It is upper that described locking fixture (6) is fixed on exterior panel (4), can in exterior panel, finely tune left and right, but can not move in marking thumb wheel (3) rotation direction, the mode fixing marking thumb wheel of its contact arm to clamp or press.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210442437.1A CN102944930B (en) | 2012-11-08 | 2012-11-08 | Adjusting device of optical fiber polarization controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210442437.1A CN102944930B (en) | 2012-11-08 | 2012-11-08 | Adjusting device of optical fiber polarization controller |
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| Publication Number | Publication Date |
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| CN102944930A CN102944930A (en) | 2013-02-27 |
| CN102944930B true CN102944930B (en) | 2014-07-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210442437.1A Expired - Fee Related CN102944930B (en) | 2012-11-08 | 2012-11-08 | Adjusting device of optical fiber polarization controller |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106885633B (en) * | 2017-04-17 | 2019-04-16 | 哈尔滨工业大学 | Polarization measurement system based on orbital angular momentum auxiliary |
| CN109407302B (en) * | 2018-11-22 | 2021-03-16 | 桂林聚联科技有限公司 | Polarization controller |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4389090A (en) * | 1980-09-04 | 1983-06-21 | The Board Of Trustees Of Leland Stanford Jr. Univ. | Fiber optic polarization controller |
| US4793678A (en) * | 1985-05-20 | 1988-12-27 | Nippon Telegraph And Telephone Corporation | Fiber optic polarization controller |
| KR100241660B1 (en) * | 1997-05-22 | 2000-03-02 | 서원석 | Fiber polarization control device |
| CN2651730Y (en) * | 2003-11-13 | 2004-10-27 | 中国科学院西安光学精密机械研究所 | Precision adjusting fibre-optic polarization controller |
| CN102359757A (en) * | 2011-09-27 | 2012-02-22 | 哈尔滨工程大学 | Polarization debugging device based on optical fiber torsion |
| CN202339422U (en) * | 2011-11-30 | 2012-07-18 | 杭州电子科技大学 | Hand-operated optical-fiber squeezing type polarization controller |
| CN202421539U (en) * | 2011-12-28 | 2012-09-05 | 武汉华工正源光子技术有限公司 | Electric control polarization-preserving optical fiber coupling clamp |
| CN202837677U (en) * | 2012-11-08 | 2013-03-27 | 电子科技大学 | Adjusting device for optical fiber polarization controller |
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