CN100447598C - Micronano optical fiber array coherent beam synthesizing device - Google Patents
Micronano optical fiber array coherent beam synthesizing device Download PDFInfo
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- CN100447598C CN100447598C CNB2007100693293A CN200710069329A CN100447598C CN 100447598 C CN100447598 C CN 100447598C CN B2007100693293 A CNB2007100693293 A CN B2007100693293A CN 200710069329 A CN200710069329 A CN 200710069329A CN 100447598 C CN100447598 C CN 100447598C
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- 239000013307 optical fiber Substances 0.000 title claims abstract description 29
- 230000001427 coherent effect Effects 0.000 title claims abstract description 16
- 230000002194 synthesizing effect Effects 0.000 title claims description 11
- 239000002121 nanofiber Substances 0.000 claims abstract description 40
- 239000000835 fiber Substances 0.000 claims abstract description 10
- 230000008878 coupling Effects 0.000 claims abstract description 9
- 238000010168 coupling process Methods 0.000 claims abstract description 9
- 238000005859 coupling reaction Methods 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims description 8
- 239000000126 substance Substances 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 abstract description 13
- 238000004891 communication Methods 0.000 abstract description 2
- 238000003491 array Methods 0.000 abstract 1
- 238000001459 lithography Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 6
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- 238000005094 computer simulation Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001259 photo etching Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
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- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
Abstract
The invention discloses micro-nano fiber array coherent beam devices. It includes the light source, optical beam splitter, optical stressed system, phase modulation, micro-nano fiber arrays, optical fiber. Light source produced a bouquet , through optical beam get a number of light beam, after each beam light stressed that the system of light-phase modulation and phase-modulation, the modulation of the beam input to a number of micro-nano fiber array, the micro-nano mode fiber coupling between a super-model, from the micro-final end satisfied that the output fiber array of beams, above all in part through fiber optic connectivity from. The invention can be achieved and subwavelength focusing collimated beam deflection and has control. In the realization of the focused beam direct-write laser lithography, optical storage, as well as biological cells in the laser operation has an important application. Implementation of the collimator and beam deflection of the beam be controlled optical switches, optical fiber communications, and has an important application.
Description
Technical field
The present invention relates to the coherent light beam synthesizer, relate in particular to a kind of micronano optical fiber array coherent beam synthesizing device.
Background technology
All the time, owing to be subjected to the restriction of light wave diffraction limit, be difficult to the beams focusing hot spot is reduced to below the wavelength dimension, this has restricted technology such as optical storage, photoetching and has further developed.In order to obtain littler focal beam spot, have two kinds of technological approaches be able to realize: a kind of is the numerical aperture that strengthens condenser lens under the condition of light wave diffraction limit, this method is subjected to the restriction of material, processing technology and optical system physical dimension, is difficult to further reduce the diameter of focal beam spot; Another kind method is to utilize the diffraction limit of the artificial electromagnetic material breakthrough light wave of negative refraction, but because the optical region negative refractive index material is being difficult to realize that this in addition material is to too big this The Application of Technology that limited of absorption loss of electromagnetic field under the technology at present.Therefore, explore other that realize at optical region that sub-wavelength focuses on and may technological means have the necessity of reality, this is one of the present invention's target that will realize just.
Up to now, the realization of collimated light beam all is to realize by optical lens system, and the deflection of control collimated light beam generally is to realize by the mechanical rotation optical element.This method is difficult to realize the quick deflection of light beam and accurately control.Phased array antenna has been widely applied in the synthetic and deflection control of the wave beam of radiowave, this method realizes the synthetic of wave beam and deflection control by the phase modulation (PM) to each bundle radiowave, use for reference similar thought, the present invention proposes a kind of micro-nano fiber array that utilizes and realizes the method that collimated light beam is synthetic and deflection is controlled.Different with phased array antenna is, the micro-nano fiber array can produce hyper mode by Mode Coupling, and these hyper modes can produce more specifically output beam.This is the unique advantage that has of the device that proposes of the present invention just.
Summary of the invention
The objective of the invention is to propose a kind of micronano optical fiber array coherent beam synthesizing device.
Micronano optical fiber array coherent beam synthesizing device comprises light source, beam splitter, light intensity modulator, phase-modulator, micro-nano fiber array, optical fiber, light source produces a branch of coherent light, produce a plurality of Shu Guang through beam splitter, each light beam is through the intensity modulation of light intensity modulator and the phase modulation (PM) of phase-modulator, to be input to through a plurality of light beams of ovennodulation in the micro-nano fiber array, form hyper mode through the Mode Coupling between the micro-nano fiber, from the synthetic light beam of end face output of micro-nano fiber array, above various piece is formed by connecting by optical fiber at last.
Described light source is a laser.The micro-nano fiber array is to arrange the array that forms by many micro-nano fiber spaced and parallel.Micro-nano fiber be the diameter that forms through drawing process by dielectric substance at several microns to the light transmitting fiber the hundreds of nanometers.
The present invention can realize that sub-wavelength focuses on and collimated light beam produces and deflection control.Phase place and the light intensity of utilizing the micro-nano fiber array to be implemented in wavelength dimension interior focusing field are modulated, and utilize the Mode Coupling of micro-nano fiber to realize the relevant synthetic of light field simultaneously, thereby realize that sub-wavelength focuses on, produces collimated light beam and control bundle deflection.Different with common lens focus, the focused beam of realizing can transmit last micro-nano fiber bundle by several microns by optical fiber and export, therefore focused beam can be deep into any one position, this aspect such as laser operations in laser direct-write photoetching, optical memory and biological cell has important application prospects.The generation of collimated light beam and the control of beam deflection can realize that photoswitch, optical filter etc. have important application prospects in optical fiber communication.
Description of drawings
Fig. 1 is the structural representation of micronano optical fiber array coherent beam synthesizing device, among the figure: light source 1, beam splitter 2, light intensity modulator 3, phase-modulator 4, micro-nano fiber array 5, optical fiber 6;
Fig. 2 is the Computer simulation results synoptic diagram that the present invention realizes the embodiment that the sub-wavelength yardstick focuses on;
Fig. 3 is the Computer simulation results synoptic diagram of the present invention embodiment of realizing collimated light beam.
Embodiment
As shown in Figure 1, micronano optical fiber array coherent beam synthesizing device comprises light source 1, beam splitter 2, light intensity modulator 3, phase-modulator 4, micro-nano fiber array 5, optical fiber 6, light source 1 produces a branch of coherent light, produce a plurality of Shu Guang through beam splitter 2, each light beam is through the intensity modulation of light intensity modulator 3 and the phase modulation (PM) of phase-modulator 4, to be input to through a plurality of light beams of ovennodulation in the micro-nano fiber array 5, form hyper mode through the Mode Coupling between the micro-nano fiber, from the synthetic light beam of end face output of micro-nano fiber array, above various piece is formed by connecting by optical fiber 6 at last.
Described light source 1 is a laser.Micro-nano fiber array 5 is to arrange the array that forms by many micro-nano fiber spaced and parallel.Micro-nano fiber be the diameter that forms through drawing process by dielectric substance at several microns to the light transmitting fiber the hundreds of nanometers.
The micro-nano fiber technology is a kind of new technology that development in recent years is got up, and the ordinary optic fibre of 250 microns of diameters can be able to be reduced to tens nanometers by suitable technology, and the loss that light is propagated is still lower.Micro-nano fiber can constrain in light field in the very little scope, and when two micro-nano fibers were close mutually, the light field in the optical fiber can exchange mutually through Mode Coupling simultaneously.When multifiber was arranged in array, this Mode Coupling can make light field form complicated hyper mode in array fibre, and these hyper modes have more complicated mode field and distribute.Light field in every micro-nano fiber is through all passing through the intensity and the phase modulation (PM) of light intensity modulator 3 and phase-modulator 4, and this intensity can form the different different hyper modes of super model with phase modulation (PM) in the micro-nano fiber array.When these patterns when fiber array is exported, can produce various output beam.By spacing and the coupling length between phase place, intensity and the optical fiber of control light field, can obtain light beam and collimated light beam that sub-wavelength focuses on, simultaneously by the relative phase between the change light field can control bundle deflection.
As shown in Figure 2, in an embodiment, the micro-nano fiber that the micro-nano fiber array is 300 nanometers by 11 diameters is formed, and the spacing between the optical fiber is 25 nanometers, and the material of optical fiber is SiO
2When the light intensity in the optical fiber and phase place are suitably modulated, be that the light beam of 400 nanometers focuses on the spot diameter that can obtain 180 nanometers to wavelength.
As shown in Figure 3, in an embodiment, the micro-nano fiber that the micro-nano fiber array is 300 nanometers by 11 diameters is formed, and the spacing between the optical fiber is 61 nanometers, and the material of optical fiber is SiO
2With the phase modulation (PM) of light field in the adjacent fiber is 180 degree, and intensity can produce the very high light beam of two bundle collimation when also suitably modulating.
Claims (4)
1. micronano optical fiber array coherent beam synthesizing device, it is characterized in that comprising light source (1), beam splitter (2), light intensity modulator (3), phase-modulator (4), micro-nano fiber array (5), optical fiber (6), light source (1) produces a branch of coherent light, produce a plurality of Shu Guang through beam splitter (2), each light beam is through the intensity modulation of light intensity modulator (3) and the phase modulation (PM) of phase-modulator (4), to be input to through a plurality of light beams of ovennodulation in the micro-nano fiber array (5), form hyper mode through the Mode Coupling between the micro-nano fiber, synthesize light beam, light source (1) from the end face output of micro-nano fiber array at last, beam splitter (2), light intensity modulator (3), phase-modulator (4), micro-nano fiber array (5) various piece is formed by connecting by optical fiber (6).
2. a kind of micronano optical fiber array coherent beam synthesizing device as claimed in claim 1 is characterized in that described light source (1) is a laser.
3. a kind of micronano optical fiber array coherent beam synthesizing device as claimed in claim 1 is characterized in that: described micro-nano fiber array (5) is to arrange the array that forms by many micro-nano fiber spaced and parallel.
4. a kind of micronano optical fiber array coherent beam synthesizing device as claimed in claim 3 is characterized in that: described micro-nano fiber be the diameter that forms through drawing process by dielectric substance at several microns to the light transmitting fiber the hundreds of nanometers.
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| CNB2007100693293A CN100447598C (en) | 2007-06-15 | 2007-06-15 | Micronano optical fiber array coherent beam synthesizing device |
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| CNB2007100693293A CN100447598C (en) | 2007-06-15 | 2007-06-15 | Micronano optical fiber array coherent beam synthesizing device |
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| CN100447598C true CN100447598C (en) | 2008-12-31 |
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| CN105388412A (en) | 2015-10-23 | 2016-03-09 | 京东方科技集团股份有限公司 | Testing device for PCBA |
| CN112180613B (en) * | 2020-10-12 | 2022-03-29 | 中国人民解放军国防科技大学 | System and method for generating orbital angular momentum beams with switchable radial and angular orders |
| CN112859355B (en) * | 2021-01-20 | 2022-03-04 | 中国人民解放军国防科技大学 | Method and system for generating vector light beam and realizing focal field customization |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20060134535A1 (en) * | 2004-12-22 | 2006-06-22 | 3M Innovative Properties Company | Lensed fiber array for sub-micron optical lithography patterning |
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| US20060134535A1 (en) * | 2004-12-22 | 2006-06-22 | 3M Innovative Properties Company | Lensed fiber array for sub-micron optical lithography patterning |
Non-Patent Citations (2)
| Title |
|---|
| Assembly of silica nanowires on silica aerogels formicrophotonic devices. Limin Tong.Nano Letters,Vol.5 No.2. 2005 |
| Assembly of silica nanowires on silica aerogels formicrophotonic devices. Limin Tong.Nano Letters,Vol.5 No.2. 2005 * |
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