CN102866513A - Layered composite magnetic elasto-optical modulation device - Google Patents
Layered composite magnetic elasto-optical modulation device Download PDFInfo
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- CN102866513A CN102866513A CN2011101892163A CN201110189216A CN102866513A CN 102866513 A CN102866513 A CN 102866513A CN 2011101892163 A CN2011101892163 A CN 2011101892163A CN 201110189216 A CN201110189216 A CN 201110189216A CN 102866513 A CN102866513 A CN 102866513A
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- elasto
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- modulation device
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- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
Abstract
The invention relates to a layered composite magnetic elasto-optical modulation device which is formed by compounding a magnetostrictive material TbDyFe (TDF) and an elasto-optical material polycarbonate (PC). The PC has an elastic birefrigent effect. An electric signal (s) is converted into an alternating magnetic field by a Helmholtz coil. The alternating magnetic field is applied to the magnetostrictive material and is coupled with the interlayer elasticity of the PC to cause the elastic double refraction of the PC so as to form the magnetoelastic double refraction, i.e. the magnetic elasto-optical effect. Under the action of the magnetic elasto-optical effect, the refractive index of the PC can be synchronously changed along with the electric signal (s), so that the signal is loaded onto a laser beam. By the layered composite structure, the magnetic elasto-optical light modulation device with the advantages of excellent machining property and the high chemical stability of an inorganic magneto-optic material and rapid response, high light damage threshold value and the like of an organic magneto-optic material can be prepared. The accompanying drawings are structural diagrams of the layered composite magnetic elasto-optical modulation device, wherein the accompanying drawing 1 represents TDF; the accompanying drawing 2 represents PC; and the accompanying drawing 3 represents the Helmholtz coil.
Description
Technical field
The present invention is a kind of composite magnetic optical modulation device that utilizes the two product effect of magnetostrictive effect and elasto-optical effect to make, and changes the refractive index of PC by the periodic telescopic shape change of TDF sheet, thus reach to laser modulate purpose.Belong to information optics material and optoelectronics technical field.
Background technology
Magnetostriction materials: when magnetostriction materials are placed in the magnetic field, deflect under the effect of the little magnetic domain outside magnetic field of material internal, and be orientated along magnetic direction, thereby cause the material of material production strain.Under the effect of alternating magnetic field, magnetostriction materials produce the mechanical vibration identical with the alternating magnetic field frequency.Play luminescent material: medium under external force, the microcosmic particle that forms medium will be subjected to displacement, medium generation deformation, and cause and the variation of the polarization property (or specific inductive capacity) of medium show as the most at last the variation of refractive index.
A kind of novel compound magneto-optic (magnetic field-stress-variations in refractive index) material can be made with magnetostriction materials with after playing the suitable combination of luminescent material, thereby the composite magnetic optical modulation device among the present invention can be used for making.Such optical modulation device requires: (1) magnetostriction materials must have excellent Magnetostriction and frequency stability, and indefatigability, (2) play luminescent material and require all to have higher clarity and large stress optical coefficient in very wide wavelength coverages.The present invention selects the rare earth ultra-magnetostriction material TDF sheet that meets above condition and transparent polymer material PC respectively as magnetostriction materials with play luminescent material.
Summary of the invention
Solve certainly technical matters:
The present invention will solve certainly, and technical matters is to change electromagnetic signal into light signal.And this light signal is loaded on the laser beam.
The technical scheme of taking for the technical solution problem:
1) the TDF sheet is cut into onesize suitable size, and becomes the compound magneto-optic memory technique of stratiform with the tackifier that is fit to and PC sheet are bonding; 2) so compound magnetic-optic devices has strong size effect, so the size of PC sheet all directions all should think over; 3) for obtaining preferably restituted signal, whole device must be fixed with ad hoc fashion, so that (causing by the periodicity mangneto is flexible) vibration of device is not subjected to other external force constraint.
Beneficial effect: according to above narration, the present invention has following characteristics as can be known
The present invention makes a kind of magneto-optic memory technique with mangneto elasto-optical effect (magnetic field-stress-variations in refractive index), and it has had the advantage of inorganic magneto-optic memory technique and organic magneto-optic memory technique concurrently, thereby can be used for making optical modulation device.The modulation electric on the compound mangneto bullet of such stratiform optical modulation device ground is forced down, and job stability is high, is with a wide range of applications.
Description of drawings:
Accompanying drawing is the compound mangneto bullet of stratiform optical modulation device structure diagram, and wherein: 1 is TDF, and 2 is PC, and 3 is the Hai Muhuoci coil.
Specific embodiments:
In figure, the upper and lower surface that the TDF sheet (1) of two appropriate sizes of selection is bonded in respectively PC sheet (2) makes laminar composite, electric signal (s) is applied on the Hai Muhuoci coil produces AC magnetic field, drive TDF with the electric signal vibration-generating, and drive PC sheet refractive index by interface coupling and change, cause the phase-locking change by the laser of PC sheet, thereby electric signal (s) just is loaded on the laser.
Claims (2)
1. the compound mangneto bullet of stratiform optical modulation device is a kind of composite magnetic optical modulation device that utilizes the two the product (mangneto elasto-optical effect) of elasto-optical effect of the magnetostrictive effect of TDF and PC to make.When being applied to modulation signal (s) on the Hai Muhuoci coil, around TDF, form AC magnetic field, under the effect of mangneto elasto-optical effect, signal just is loaded on the laser beam by PC, thereby can be applied in the optical communication or make various types of high frequency magneto-optic shutters.Its feature mainly contains following components and forms: (1) TDF sheet, (2) PC sheet, (3) Hai Muhuoci coil.
2. described by claims one is a kind of composite magnetic optical modulation device that utilizes the product effect design preparation of magnetostrictive effect and elasto-optical effect, it is characterized in that: after the Hai Muhuoci coil applies the modulation signal that frequency is ω (s), two-layer TDF sheet produces periodic magnetostriction under the effect of alternating magnetic field up and down, also the generation cycle is the STRESS VARIATION of ω to make the PC sheet by the interlayer Elastic Coupling, PC sheet refractive index under the effect of elasto-optical effect changes with cycle ω equally, just change along with modulation signal (s) so see through the phase place of the laser of PC sheet, namely signal is loaded on the laser beam.The modulation electric of the compound mangneto bullet of such stratiform optical modulation device is forced down, and job stability is high, is with a wide range of applications.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101892163A CN102866513A (en) | 2011-07-07 | 2011-07-07 | Layered composite magnetic elasto-optical modulation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101892163A CN102866513A (en) | 2011-07-07 | 2011-07-07 | Layered composite magnetic elasto-optical modulation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102866513A true CN102866513A (en) | 2013-01-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101892163A Pending CN102866513A (en) | 2011-07-07 | 2011-07-07 | Layered composite magnetic elasto-optical modulation device |
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| CN (1) | CN102866513A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4376248A (en) * | 1981-03-06 | 1983-03-08 | The United States Of America As Represented By The Secretary Of The Navy | Fiber optical magnetic field sensor using magnetostrictive material |
| US4378497A (en) * | 1981-03-06 | 1983-03-29 | The United States Of America As Represented By The Secretary Of The Navy | Optical fiber magnetic field sensor with thermal and acoustic isolation |
| US4668085A (en) * | 1984-04-28 | 1987-05-26 | Standard Telephones & Cables Plc | Photo-elastic sensor |
| CN1283278A (en) * | 1997-12-15 | 2001-02-07 | 南加利福尼亚大学 | Tunable nonlinearly chirped FM grating |
| CN101943804A (en) * | 2010-01-19 | 2011-01-12 | 李向阳 | Layered compound type electrogenic elastic-optic modulation device |
-
2011
- 2011-07-07 CN CN2011101892163A patent/CN102866513A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4376248A (en) * | 1981-03-06 | 1983-03-08 | The United States Of America As Represented By The Secretary Of The Navy | Fiber optical magnetic field sensor using magnetostrictive material |
| US4378497A (en) * | 1981-03-06 | 1983-03-29 | The United States Of America As Represented By The Secretary Of The Navy | Optical fiber magnetic field sensor with thermal and acoustic isolation |
| US4668085A (en) * | 1984-04-28 | 1987-05-26 | Standard Telephones & Cables Plc | Photo-elastic sensor |
| CN1283278A (en) * | 1997-12-15 | 2001-02-07 | 南加利福尼亚大学 | Tunable nonlinearly chirped FM grating |
| CN101943804A (en) * | 2010-01-19 | 2011-01-12 | 李向阳 | Layered compound type electrogenic elastic-optic modulation device |
Non-Patent Citations (1)
| Title |
|---|
| X.B.LUO等: "Magneto-birefringence in layered composites at room-temperature", 《2010 SYMPOSIUM ON PHOTONICS AND OPTOELECTRONIC, SOPO 2010 - PROCEEDINGS》 * |
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Application publication date: 20130109 |