CN102737713A - Two-dimensional integrated optical fiber online storage based on linear array multi-core optical fiber - Google Patents
Two-dimensional integrated optical fiber online storage based on linear array multi-core optical fiber Download PDFInfo
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- CN102737713A CN102737713A CN2012102355729A CN201210235572A CN102737713A CN 102737713 A CN102737713 A CN 102737713A CN 2012102355729 A CN2012102355729 A CN 2012102355729A CN 201210235572 A CN201210235572 A CN 201210235572A CN 102737713 A CN102737713 A CN 102737713A
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Abstract
The invention provides a two-dimensional integrated optical fiber online storage based on a linear array multi-core optical fiber. The two-dimensional integrated optical fiber online storage is formed by connecting a single-mode optical fiber (7) with one section of array multi-core side-throwing optical fiber (2); and metal gradient grating structures (4) are formed on the surfaces of a plurality of naked fiber cores (3) by utilizing an optical micro-processing technology. The principle applied by the invention is based on a rainbow local effect, namely, a chromatic dispersion effect of the gradient grating is used for resonantly limiting plasmons with different wavelengths into different space positions; and light with different wavelengths can be stopped into two-dimensional space positions with different optical fiber side-throwing planes, so that the online two-dimensional storage of optical signals from visible light to optical signals of infrared bands can be realized. The device has the advantages of small volume, simple structure and high integration degree, can easily realize full-optical-fiber integration and has an important application on the optical fiber online storage field.
Description
Technical field
What the present invention relates to is a kind of optical fiber on-line memory, and particularly a kind of two-dimentional integrated form optical fiber on-line memory based on the linear array multi-core fiber is mainly used in the wave filter in optical storage and the communication.
Background technology
(Surface Plasmon Polaritons is a kind of coherence resonance that is interacted and formed by external electromagnetic field and metal surface free electron SPPs) to surface plasma excimer, has huge local field enhancement effect.It can overcome diffraction limit, produces the optical phenomena of many novelties, like negative refraction, ultrahigh resolution imaging, transmission enhancing etc.These complex phenomena might indicate new principle, new theory, new technology.When changing the metal surface structure, the character of surface plasma excimer, dispersion relation, excitation mode, coupling effect etc. all will produce great variation.Through interacting between SPPs and the light field, can realize the active that light is propagated is controlled.Utilize the photonic device of surface plasma excimer exploitation aspect miniaturization, to have remarkable advantages.SPPs provides possibility for the novel photonic device of development, wideband communication system, surface plasma photon chip, small photon loop, modulator and switch, data storage, microscope, new type light source, solar cell, novel photon sensor etc.At present, the sub-wavelength optics based on SPPs becomes one of research direction with the fastest developing speed in optics and the photonics.The optical device of metal surface plasma body has received increasing concern.
Optical fiber surface plasmon sensor (seeing United States Patent(USP) No. 5,647,030 and No.5,327,225) also has a lot of reports.Utilizing metal grating to realize that coupling excitating surface plasmon also has report, but all be to be used for unimodal wavelength-modulated device, is transmission or reflective devices, does not have memory function.Utilize the rainbow capture effect of the surface plasma generation of metal micro-nano optical grating construction to obtain experimental verification (Applied Physics Letters in the conventional waveguide substrate at visible light wave range; 2011; 98,251103), this effect will be significant in optical storage of future generation.But present structure is difficult to carry out interconnectedly with existing optical communication system, and majority is the one dimension constraint, the rainbow local effect is applied in the optical fibre device also do not appear in the newspapers.
Summary of the invention
The object of the present invention is to provide a kind of two-dimentional integrated form optical fiber on-line memory that can realize visible light to the online two-dimensional storage of light signal of infrared band based on the linear array multi-core fiber.
The objective of the invention is to realize like this:
Two-dimentional integrated form optical fiber on-line memory based on the linear array multi-core fiber is made up of one section array multi-core side polishing fine 2 of single-mode fiber 7 connections, utilizes the optics micro-processing technology at exposed a plurality of fibre cores 3 surface formation metal gradient optical grating constructions 4.
Said graded metal optical grating construction 4 is to polish the graded metal optical grating construction that long and slender wicking surface is directly made projection in side; Or the flush type metal grating structure, promptly utilize photoetching technique to polish the microflute that long and slender wicking surface is carved the gradient optical grating construction earlier in side, deposit metal in the microflute then.
Said graded metal optical grating construction is meant that the grid width t of metal grating periods lambda and metal grating unit 5 is definite values, and the high h of the grid of metal grating unit 5 is a graded.
Metal material is gold, silver, aluminium etc.
The coupling of array multi-core fiber and single-mode fiber is to realize through fused biconical taper at a less side and the single-mode fiber of array multi-core fiber graded metal grating height h.
Metal gradient optical grating construction on each fibre core of array multi-core side polishing fine 2 has identical gradient.
The gradient of the metal gradient optical grating construction on each fibre core of array multi-core side polishing fine 2 is different.
Each fibre core spacing of described array multi-core fiber d value is bigger, guarantees not have between each fibre core to crosstalk; The size of each fibre core can be identical, also can be different; The refractive index of each fibre core can be identical, also can be different.
The principle based on the two-dimentional integrated form optical fiber on-line memory of rainbow local effect of full optical fiber of the present invention is different with traditional optical memory; It is based on the rainbow local effect; Promptly utilize the gradient grating with the phasmon resonance local of different wave length in different spatial positions; The light of different-waveband will be parked in different two-dimensional space positions, can realize that visible light is to the online two-dimensional storage of the light signal of infrared band.
Compared with prior art, advantage of the present invention is:
1, this memory size is little, and is simple in structure, is easy to realize that full optical fiber is integrated, carries out interconnectedly with the existing fiber technology, in the online field of storage of optical fiber, has important application;
2, this storer can realize that visible light is to the online storage of the light signal of infrared band;
3, this storer can realize that two-dimentional online storage is integrated.
Description of drawings
Fig. 1 (a) is the optical-fiber two-dimensional on-line memory structural representation of graded metal grating raised structures;
Fig. 1 (b) is the optical-fiber two-dimensional on-line memory side throwing figure of metal grating raised structures;
Fig. 1 (c) is the metal grating cell schematics;
Fig. 1 (d) is the optical-fiber two-dimensional on-line memory vertical view of metal grating raised structures;
Fig. 1 (e) is that side is thrown the multi-core fiber xsect;
Fig. 1 (f) is the coupling synoptic diagram of single-mode fiber and multi-core fiber;
Fig. 2 (a) is the array multi-core fiber xsect that each fibre core has same size;
Fig. 2 (b) is the array multi-core fiber xsect that changes in each core size cycle;
Fig. 2 (c) is the array multi-core fiber xsect of the linear variation of each core size;
Fig. 3 (a) is the vertical view that the metal gradient optical grating construction on each fibre core has different gradients;
Fig. 3 (b) is the side throwing figure of the metal gradient grating on the fibre core 4-1;
Fig. 3 (c) is the side throwing figure of the metal gradient grating on the fibre core 4-2;
Fig. 4 is metal grating flush type two dimension on-line memory side throwing figure.
Embodiment
For example the present invention is done description in more detail below in conjunction with accompanying drawing:
Embodiment 1:
Two-dimentional integrated form optical fiber on-line memory structure based on the linear array multi-core fiber is as shown in Figure 1; Connecting one section array 7 core fibre 1 by single-mode fiber 7 constitutes; Wherein array 7 core fibres 1 are processed to side polishing fine 2; Be that fibre cladding 5 is all half the by jettisoning with fibre core, be exposed to extraneous a plurality of fibre cores 3 and utilize the optics micro-processing technology to form the metal gradient optical grating construction 4 of projection on the surface.7 fibre cores 3 have identical refractive index and identical size, core diameter 4000 nanometers, and the graded metal grating on 7 fibre core surfaces is all identical, and the grid width t of its periods lambda and metal grating unit 5 is a definite value, is respectively 340 nanometers and 110 nanometers.The high 5-785 nanometer of the grid of metal grating unit 5 is totally 40 cycles, and the grid high gradient is 20 nanometers.Array multi-core fiber 1 is to make each fibre core power identical at array multi-core fiber graded metal grating height h less a side and single-mode fiber through fused biconical taper with the coupling of single-mode fiber 7.Multi wave length illuminating source injects from single-mode fiber one end, and the light of different wave length will be by local in different spatial positions, and the short light of wavelength is parked in the less side of metal grating height h, wavelength X
1And λ
2Be parked in fiber axis respectively to diverse location, realize two-dimentional online storage.
Embodiment 2:
Two-dimentional integrated form optical fiber on-line memory structure based on the linear array multi-core fiber is as shown in figs. 1 and 4; Connecting one section array 5 core fibre 1 by single-mode fiber 7 constitutes; Wherein array 5 core fibres 1 are processed to side polishing fine 2; Be that fibre cladding 5 is all half the by jettisoning with fibre core, be exposed to extraneous a plurality of fibre cores 3 and utilize the optics micro-processing technology to form flush type metal gradient optical grating construction 4 on the surface.5 fibre cores have identical refractive index but different sizes, and core diameter is from the 3000-4000 nanometer, and the graded metal grating on 5 fibre core surfaces is all identical, and the grid width t of its periods lambda and metal grating unit 5 is a definite value, is respectively 340 nanometers and 110 nanometers.The high 5-785 nanometer of the grid of metal grating unit 5 is totally 40 cycles, and the grid high gradient is 20 nanometers.Array multi-core fiber 1 is to make each fibre core power identical at array multi-core fiber graded metal grating height h less a side and single-mode fiber through fused biconical taper with the coupling of single-mode fiber 7.Multi wave length illuminating source injects from single-mode fiber one end, and because of each core size is different, its corresponding effective refractive index can be different, and the light of different wave length will be by local in different two-dimensional space positions, wavelength X
1And λ
2Be parked in optical fiber respectively and throw the diverse location of face, realize real two-dimentional online storage.
Embodiment 3:
Two-dimentional integrated form optical fiber on-line memory structure based on the linear array multi-core fiber is as shown in figs. 1 and 3; Connecting one section array 5 core fibre 1 by single-mode fiber 7 constitutes; Wherein array 5 core fibres 1 are processed to side polishing fine 2; Be that fibre cladding 5 is all half the by jettisoning with fibre core, be exposed to extraneous a plurality of fibre cores 3 and utilize the optics micro-processing technology to form flush type metal gradient optical grating construction 4 on the surface.5 fibre cores have identical refractive index and identical size, and core diameter is 4000 nanometers, and its periods lambda of graded metal grating on 5 fibre core surfaces and the grid width t of metal grating unit 5 are definite value, are respectively 340 nanometers and 110 nanometers.But metal grating grid high gradient has nothing in common with each other.Array multi-core fiber 1 is to make each fibre core power identical at array multi-core fiber graded metal grating height h less a side and single-mode fiber through fused biconical taper with the coupling of single-mode fiber 7.Multi wave length illuminating source injects from single-mode fiber one end, because of each fibre core surface grating 4-1, and 4-2,4-3,4-4,4-5 grid high gradient is different, and the chromatic dispersion of each fibre core metal grating is also different, and the light of different wave length will be by local in different two-dimensional space positions, wavelength X
1, λ
2, λ
3And λ
4Be parked in optical fiber respectively and throw the diverse location of face, realize real two-dimentional online storage.
Claims (7)
1. two-dimentional integrated form optical fiber on-line memory based on the linear array multi-core fiber; It is characterized in that: connect one section array multi-core side polishing fine (2) by single-mode fiber (7) and constitute, utilize the optics micro-processing technology to form metal gradient optical grating construction (4) on exposed a plurality of fibre cores (3) surface.
2. the two-dimentional integrated form optical fiber on-line memory based on the linear array multi-core fiber according to claim 1, it is characterized in that: said graded metal optical grating construction (4) is to polish the graded metal optical grating construction that long and slender wicking surface is directly made projection in side; Or the flush type metal grating structure, promptly utilize photoetching technique to polish the microflute that long and slender wicking surface is carved the gradient optical grating construction earlier in side, deposit metal in the microflute then.
3. the two-dimentional integrated form optical fiber on-line memory based on the linear array multi-core fiber according to claim 2; It is characterized in that: said graded metal optical grating construction is meant that the grid width t of metal grating periods lambda and metal grating unit (5) is a definite value, and the high h of grid of metal grating unit (5) is a graded.
4. the two-dimentional integrated form optical fiber on-line memory based on the linear array multi-core fiber according to claim 3; It is characterized in that: metal grating structure (4) periods lambda scope 200-700 nanometer; The high h of grid of metal grating unit (5) is the 5-1000 nanometer, and the grid width t of metal grating unit (5) is the 10-300 nanometer.
5. the two-dimentional integrated form optical fiber on-line memory based on the linear array multi-core fiber according to claim 4 is characterized in that: the coupling of array multi-core fiber and single-mode fiber is to realize through fused biconical taper at a less side and the single-mode fiber of array multi-core fiber graded metal grating height h.
6. the two-dimentional integrated form optical fiber on-line memory based on the linear array multi-core fiber according to claim 5 is characterized in that: the metal gradient optical grating construction on each fibre core of array multi-core side polishing fine (2) has identical gradient.
7. the two-dimentional integrated form optical fiber on-line memory based on the linear array multi-core fiber according to claim 5 is characterized in that: the gradient of the metal gradient optical grating construction on each fibre core of array multi-core side polishing fine (2) is different.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102842744A (en) * | 2012-09-21 | 2012-12-26 | 东南大学 | Adjustable and controllable rainbow local area network controller |
| CN104157934A (en) * | 2014-07-21 | 2014-11-19 | 南京航空航天大学 | Ultra wide band plasma filter provided with artificial surface |
| CN107315223A (en) * | 2017-07-14 | 2017-11-03 | 上海交通大学 | Collect the optical interconnection device of Polarization filter and the impartial coupler of interlayer |
| CN111048133A (en) * | 2019-11-12 | 2020-04-21 | 武汉大学 | Optical storage device and method based on metal super-surface structure |
| CN114142921A (en) * | 2021-12-09 | 2022-03-04 | 中山水木光华电子信息科技有限公司 | All-optical storage system and method based on different central wavelength optical fiber codes |
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| US20090303489A1 (en) * | 2006-07-13 | 2009-12-10 | Aston University | Surface Plasmons |
| CN201382778Y (en) * | 2009-04-22 | 2010-01-13 | 东南大学 | Measuring transducer used for simultaneously measuring strain and temperature of fiber grating |
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2012
- 2012-07-09 CN CN201210235572.9A patent/CN102737713B/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20090303489A1 (en) * | 2006-07-13 | 2009-12-10 | Aston University | Surface Plasmons |
| CN201382778Y (en) * | 2009-04-22 | 2010-01-13 | 东南大学 | Measuring transducer used for simultaneously measuring strain and temperature of fiber grating |
Non-Patent Citations (2)
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| 朱晓亮 等: "平行阵列芯光纤的超模耦合特性", 《中国激光》 * |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102842744A (en) * | 2012-09-21 | 2012-12-26 | 东南大学 | Adjustable and controllable rainbow local area network controller |
| CN104157934A (en) * | 2014-07-21 | 2014-11-19 | 南京航空航天大学 | Ultra wide band plasma filter provided with artificial surface |
| CN107315223A (en) * | 2017-07-14 | 2017-11-03 | 上海交通大学 | Collect the optical interconnection device of Polarization filter and the impartial coupler of interlayer |
| CN107315223B (en) * | 2017-07-14 | 2019-11-15 | 上海交通大学 | Collect the optical interconnection device of Polarization filter and interlayer equalization coupler |
| CN111048133A (en) * | 2019-11-12 | 2020-04-21 | 武汉大学 | Optical storage device and method based on metal super-surface structure |
| CN111048133B (en) * | 2019-11-12 | 2021-10-22 | 武汉大学 | Optical storage device and method based on metal super-surface structure |
| CN114142921A (en) * | 2021-12-09 | 2022-03-04 | 中山水木光华电子信息科技有限公司 | All-optical storage system and method based on different central wavelength optical fiber codes |
| CN114142921B (en) * | 2021-12-09 | 2023-02-28 | 中山水木光华电子信息科技有限公司 | All-optical storage system and method based on different central wavelength optical fiber codes |
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| CN102737713B (en) | 2015-08-12 |
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