CN100353214C - Coplanar electrode type piezoelectric ceramic material optical circular polarizing modulator - Google Patents
Coplanar electrode type piezoelectric ceramic material optical circular polarizing modulator Download PDFInfo
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- CN100353214C CN100353214C CNB2005100499608A CN200510049960A CN100353214C CN 100353214 C CN100353214 C CN 100353214C CN B2005100499608 A CNB2005100499608 A CN B2005100499608A CN 200510049960 A CN200510049960 A CN 200510049960A CN 100353214 C CN100353214 C CN 100353214C
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- piezoelectric ceramic
- modulation controller
- circular polarizing
- light
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Abstract
The present invention discloses a coplanar electrode type piezoelectric ceramic material optical circular polarizing modulator. Incident light passes through a first piezoelectric ceramic component which is controlled by a first modulation controller and has the adjustable birefringent characteristic, and a second piezoelectric ceramic component which is controlled by a second modulation controller and has the adjustable birefringent characteristic, the first piezoelectric ceramic component and the second piezoelectric ceramic component are connected by a light path, and the present invention is formed. Left-hand turning circular polarizing light or right-hand turning circular polarizing light is outputted, or the front of the first piezoelectric ceramic component controlled by the first modulation controller is provided with an input coupling device which has the collimating function. Simultaneously, the back of the second piezoelectric ceramic component controlled by the second modulation controller is provided with an output coupling device which has the collimating or focusing function. The modulation controller can provide an electric field, a magnetic field or pressure for piezoelectric ceramic material. The birefringence of the piezoelectric ceramic material can be changed under the action of the electric field, the magnetic field or force. According to the characteristic, the left-hand turning circular polarizing light and the right-hand turning circular polarizing light can be modulated. Linearly polarized light can even be modulated. The present invention brings great convenience for detecting chiral substances and improving the photoinjection efficiency of a spinning electronic device.
Description
Technical field
The present invention relates to a kind of optical element, especially relate to a kind of coplanar electrode type piezoelectric ceramic material optical circular polarizing modulator.
Background technology
Optical circular polarizing modulator has important effect in the detection identification of chiral material and spin electric device.In chiral material,, can produce different optical activities if propagate left-handed right-circularly polarized light simultaneously.In chiral material, have different propagation constants owing to left-handed with right-circularly polarized light in addition, can cause the dichromatism of circle to occur, become the important evidence that detects the identification chiral material.In spin electric device, because the electric field intensity of circularly polarized light rotation, can make the injection efficiency of going into the photonic device of mode that very big raising is arranged with light beam, thus the performance of raising device.
This optical circular polarizing modulator is to act on the piezoceramic material by certain mode of action, thereby changes the phase differential of the polarized light of propagating in the birefraction change piezoceramic material of piezoceramic material, promptly changes its polarization characteristic on the direction of propagation.So, by the intensity and the polarity of corrective action mode, just can obtain left-handed and circularly polarized light dextrorotation, and the polarized light of other polarization states.And traditional polarization optical element mainly is by quarter-wave plate the phase place of light to be postponed to obtain left-handed or right-circularly polarized light, can only produce single polarization state, and can't carry out the modulation of continuous polarization state of light.
Summary of the invention
The object of the present invention is to provide a kind of coplanar electrode type piezoelectric ceramic material optical circular polarizing modulator, made full use of the adjustable double refracting characteristic of piezoceramic material, the circularly polarized light that can carry out left-handed and dextrorotation continuously switches modulation, and the modulation of other polarization states, to be used for carrying out the detection identification of chiral material.
In order to reach purpose of the present invention, the technical solution adopted in the present invention is:
Comprise incident light successively the input coupling device through having alignment function, by the second adjustable piezo ceramic element of birefringent characteristic of second modulation controller control, and on the light path of or right-circularly polarized light left-handed output coupling device with collimation or focusing function is set by the second adjustable piezo ceramic element outgoing of the birefringent characteristic of second modulation controller control; It is characterized in that: on the light path between the input coupling device and second piezo ceramic element, setting is by the first adjustable piezo ceramic element of birefringent characteristic of first modulation controller control, and incident light is converted into linearly polarized light after through first piezo ceramic element.
The beneficial effect that the present invention has is: the present invention is owing to made full use of the adjustable double refracting characteristic of piezoceramic material, thereby constituted optical circular polarizing modulator easily, thereby satisfied the demand of fast continuously modulating of user, can carry out the circularly polarized light modulation of fabulous circular polarization simultaneously left and right sides circularly polarized light.The present invention can carry out the continuous modulation of any polarization state, and can be implemented in switching between various polarization states rapidly, especially to left-handed and circularly polarized light dextrorotation, this light beam for the detection of chiral material and raising spin electric device is gone into efficient and is brought great convenience.The present invention can also be applied in the communication system in addition, as the Polarization Modulation scrambler, so that dilatation is carried out in the communication transmission.Have practicality, characteristics easily.
Description of drawings
Fig. 1 is a structural principle synoptic diagram of the present invention;
Fig. 2 is two piezo ceramic element structural principle synoptic diagram of the present invention;
Fig. 3 is two piezo ceramic elements of the present invention structural principle synoptic diagram that are integrated.
Among the figure: 1, incident light, 2, input coupling device, 3, piezo ceramic element, 3.1, the film metal electrode, 3.2, piezoceramic material that birefringent characteristic is adjustable, 4, piezo ceramic element, 4.1, the film metal electrode, 4.2, piezoceramic material that birefringent characteristic is adjustable, 5, output coupling device, 6, left-handed or right-circularly polarized light, 7, modulation controller, 8, modulation controller.
Embodiment
The invention will be further described below in conjunction with drawings and Examples.
As shown in Figure 1, incident light 1 is successively by by adjustable first piezo ceramic element 3 of the birefringent characteristic of first modulation controller 7 control with by the second adjustable piezo ceramic element 4 of birefringent characteristic of second modulation controller, 8 controls, and connect with light path and to combine, export left-handed or right-circularly polarized light 6.
On the light path before incident light 1 incident first piezo ceramic element 3 adjustable, the input coupling device 2 with alignment function is set by the birefringent characteristic of first modulation controller, 7 controls.
On the light path of or right-circularly polarized light 6 left-handed, the output coupling device 5 with collimation or focusing function is set by adjustable second piezo ceramic element, 4 outgoing of the birefringent characteristic of second modulation controller, 8 controls.
On the light path before incident light 1 incident first piezo ceramic element 3 adjustable, the input coupling device 2 with alignment function is set, on the light path of or right-circularly polarized light 6 left-handed, the output coupling device 5 with collimation or focusing function is set simultaneously by adjustable second piezo ceramic element, 4 outgoing of the birefringent characteristic of second modulation controller, 8 controls by the birefringent characteristic of first modulation controller, 7 controls.
As shown in Figure 2, the described first adjustable piezo ceramic element 3 of birefringent characteristic by 7 controls of first modulation controller, form with the parallel film metal electrode 3.1 of the polarised direction angle at 45 of piezoceramic material 3.2 and first piezoceramic material 3.2 with two by the same side, be connected the positive and negative polarities of modulation controller 7 by lead.
As shown in Figure 2, the described second adjustable piezo ceramic element 4 of birefringent characteristic by 8 controls of second modulation controller, become second piezoceramic material 4.2 of the film metal electrode 4.1 of 90 ° of angles to form by the same side with two polarised directions with piezoceramic material 4.2, be connected the positive and negative polarities of second modulation controller 8 by lead, two film metal electrodes 3.1 that are attached on first piezoceramic material 3.2 are positioned on two relative faces of two piezoceramic materials with other two film metal electrodes 4.1 on being attached to second piezoceramic material 4.2, and two pairs of electrodes are at 45 mutually.
As shown in Figure 3, can be with two piezoceramic material 3.2,4.2 integrators that birefringent characteristic is adjustable, two pairs of electrodes are attached to respectively on two relative faces, and two pairs of electrodes are at 45 mutually.
Described two modulation controllers the 7, the 8th can provide the device of electric field, magnetic field or pressure respectively to piezoceramic material 3.2,4.2.
Principle of work of the present invention is as follows:
Below be example with the PLZT material, specific embodiments of the present invention is described, but enforcement of the present invention is not limited to adopt the PLZT material as the birefringence piezoceramic material.
Fig. 1 shows principle assumption diagram of the present invention, and incident light 1 is by input coupling device 2, enter first block of PLZT material 3 by 7 controls of first modulation controller after, be converted into from the horizontal by 45 ° linearly polarized light.First block of PLZT material 3 and second block of PLZT material 4 can be to integrate as an overall work among the figure, also can be work step by step independently of one another.The work of integrating still is that the work of separate substep ground will not have absoluteness according to material of selecting and modulation system decision.When the linearly polarized light that produces passes through by second block of PLZT material 4 of second modulation controller, 8 controls, birefraction change amount with 8 pairs of PLZT materials 4 of modulation controller is modulated, to change the polarization polarization state of light, output light focuses on or collimates by 5 pairs of light of output coupling device and obtains left-handed or right-circularly polarized light 6.
For drawing that the position of all components and parts is just illustrated, according to the needs of design, what have can integrate among Fig. 1, also work step by step independently of one another, and its position does not have absoluteness.
As shown in Figures 2 and 3, two light polarization modulation modules of present embodiment, they by PLZT material 3.2 with 4.2 and the membrane electrode 3.1,4.1 that is attached on relative two faces form by the positive and negative polarities that lead is connected to electrical modulation controller 7,8.The fast axle of PLZT material and slow axis are respectively in vertical and horizontal direction.The difference of Fig. 2 and Fig. 3 example is whether two pairs of electrodes are made on the same block of PLZT material 3.
Specific design parameter of the present invention depends on selected piezoceramic material.
In the present embodiment, birefringent characteristic is adjustable, and piezoceramic material adopts the PLZT material.The wavelength parameter of material and work does not have absoluteness.For example, the ratio of selecting material to mix lanthanum, the wavelength of logical light window, two interelectrode distances, the thickness of piezoceramic material on the optical direction, these data all have certain randomness.
The foregoing description is used for the present invention that explains, rather than limits the invention, and in the protection domain of spirit of the present invention and claim, any modification and change to the present invention makes all fall into protection scope of the present invention.
Claims (4)
1, a kind of coplanar electrode type piezoelectric ceramic material optical circular polarizing modulator, comprise incident light (1) successively the input coupling device (2) through having alignment function, by adjustable second piezo ceramic element (4) of birefringent characteristic of second modulation controller (8) control, and on the light path of or right-circularly polarized light (6) left-handed output coupling device (5) with collimation or focusing function is set by adjustable second piezo ceramic element (4) outgoing of the birefringent characteristic of second modulation controller (8) control; It is characterized in that: on the light path between input coupling device (2) and second piezo ceramic element (4), setting is by adjustable first piezo ceramic element (3) of birefringent characteristic of first modulation controller (7) control, and incident light (1) is converted into linearly polarized light after through first piezo ceramic element (3).
2, a kind of coplanar electrode type piezoelectric ceramic material optical circular polarizing modulator according to claim 1, it is characterized in that: described adjustable first piezo ceramic element (3) of birefringent characteristic by first modulation controller (7) control, form with the parallel film metal electrode (3.1) of the polarised direction angle at 45 of piezoceramic material (3.2) and first piezoceramic material (3.2) with two by the same side, be connected the positive and negative polarities of modulation controller (7) by lead.
3, a kind of coplanar electrode type piezoelectric ceramic material optical circular polarizing modulator according to claim 1, it is characterized in that: described adjustable second piezo ceramic element (4) of birefringent characteristic by second modulation controller (8) control, become second piezoceramic material (4.2) of the film metal electrode (4.1) of 90 ° of angles to form by the same side with two polarised directions with piezoceramic material (4.2), be connected the positive and negative polarities of second modulation controller (8) by lead, two the film metal electrodes (3.1) that are attached on first piezoceramic material (3.2) are positioned on two relative faces of two piezoceramic materials with other two film metal electrodes (4.1) on being attached to second piezoceramic material (4.2), and two pairs of electrodes are at 45 mutually.
4, a kind of coplanar electrode type piezoelectric ceramic material optical circular polarizing modulator according to claim 1 is characterized in that: described two modulation controllers (7,8) are the devices that electric field, magnetic field or pressure can be provided piezoceramic material (3.2,4.2) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100499608A CN100353214C (en) | 2005-06-06 | 2005-06-06 | Coplanar electrode type piezoelectric ceramic material optical circular polarizing modulator |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2005100499608A CN100353214C (en) | 2005-06-06 | 2005-06-06 | Coplanar electrode type piezoelectric ceramic material optical circular polarizing modulator |
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| CN1687818A CN1687818A (en) | 2005-10-26 |
| CN100353214C true CN100353214C (en) | 2007-12-05 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1116753A (en) * | 1994-07-26 | 1996-02-14 | 三星电管株式会社 | Display device |
| CN1283282A (en) * | 1997-10-29 | 2001-02-07 | 光学通信公司 | Discrete element light modulating microstructure devices |
| US6470102B2 (en) * | 2000-01-19 | 2002-10-22 | Finisar Corporation | All-polymer waveguide polarization modulator and method of mode profile control and excitation |
| CN1588180A (en) * | 2004-08-01 | 2005-03-02 | 浙江大学 | Light circular polarization modulator |
| CN2793769Y (en) * | 2005-06-06 | 2006-07-05 | 浙江大学 | Coplanar electrode style optical circular polarized modulator with piezoelectric ceramic material |
-
2005
- 2005-06-06 CN CNB2005100499608A patent/CN100353214C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1116753A (en) * | 1994-07-26 | 1996-02-14 | 三星电管株式会社 | Display device |
| CN1283282A (en) * | 1997-10-29 | 2001-02-07 | 光学通信公司 | Discrete element light modulating microstructure devices |
| US6470102B2 (en) * | 2000-01-19 | 2002-10-22 | Finisar Corporation | All-polymer waveguide polarization modulator and method of mode profile control and excitation |
| CN1588180A (en) * | 2004-08-01 | 2005-03-02 | 浙江大学 | Light circular polarization modulator |
| CN2793769Y (en) * | 2005-06-06 | 2006-07-05 | 浙江大学 | Coplanar electrode style optical circular polarized modulator with piezoelectric ceramic material |
Non-Patent Citations (2)
| Title |
|---|
| 透明PL ZT电光陶瓷材料的制备及应用研究进展 谢菊芳，张端明，王世敏，刘素玲，马卫东.功能材料，第1期 1998 * |
| 透明陶瓷的发展 刘军芳，傅正义，张东明，张金咏.陶瓷科学与艺术，第1期 2002 * |
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Granted publication date: 20071205 Termination date: 20110606 |