CN1544988A - Implement method for plane single scale intergration acoustooptic wavelength route optical switch - Google Patents
Implement method for plane single scale intergration acoustooptic wavelength route optical switch Download PDFInfo
- Publication number
- CN1544988A CN1544988A CNA2003101059837A CN200310105983A CN1544988A CN 1544988 A CN1544988 A CN 1544988A CN A2003101059837 A CNA2003101059837 A CN A2003101059837A CN 200310105983 A CN200310105983 A CN 200310105983A CN 1544988 A CN1544988 A CN 1544988A
- Authority
- CN
- China
- Prior art keywords
- wavelength
- port
- optic
- route
- incident
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
The invention discloses a method of implementing a plane single-chip integrated acousto-optic wavelength route optical switch. Multichannel wavelength division multiplexing incident light through expanding beam, acousto-optic deflection, focusing, etc, makes N wavelength division multiplexing optical signals of any one of the N incident ports oriented to N different corresponding ports of output optical-fiber arrays according to wavelength routing rule, implementing the function of wavelength division route optical switch. Where, the spreading beam and focusing are implemented by waveguide lens, and the deflection is implemented by acousto-optic grating excited by the combination of interdigital transducers driven by ultrasonic power supply whose stroke under the control of computer programming. Its character: in implementation, it adopts heavy-caliber waveguide lens optical path and multichannel Prague grating deflecting mechanism to form a simple single-chip integrated waveguide switch function, beneficial to reduce cost and difficulty in process, and implement fast wavelength routing optical switch function.
Description
Technical field
The invention belongs to optical communication technique field and integrated opto-electronic field, relate to a kind of implementation method of the plane monolithic integrated acousto-optic wavelength route photoswitch based on acoustooptic effect.
Background technology
To the optical fiber measurement system, photoswitch all is its critical component from the high speed optical fiber communication network system, switches and Route Selection in order to realize the channel of light in the network light path.In today of information explosion, because the developing rapidly of wavelength-division multiplex technique is used for Route Selection, the photoswitch of wavelength Route Selection particularly, demand is urgent day by day aspect hypervelocity, vast capacity optical communication system intelligent.
Current, photoswitch can be divided into non-integrated spatial optical switches and integrated light guide photoswitch (IOWS) two big classes.IOWS has overcome defectives such as non-integrated-type photoswitch volume is big, switching speed slow, rebound shake, and the integrated and trend toward miniaturization of compliance with system has development potentiality most.IOWS mainly contains electro-optical type and two kinds of basic structures of sound-light type.Electro-optical type adopts the electrooptical effect theory, switching speed is fast, but its elementary cell mostly is 1*2 or 2*2 type directional coupler (bar waveguiding structure), multi-way switch all by this structural unit repeat to add up, cascade and forming, yield rate is low, cost is high, be difficult to realize producing in batches.Integrated acousto-optic type photoswitch adopts the acoustooptic effect principle, but mostly be acousto-optic tunable filter (AOTFs) structure at present, the gating port number is few, have only to be used and to realize multichannel wavelength routing function by cascade or with wavelength division multiplexer etc., simultaneously owing to be based upon on the strip optical waveguide basis, there are structure and complex process, cost is high and is difficult to realize problem such as batch process, thereby only be fit to carry out on the light signal/following road, but uncomfortable cooperation multichannel wavelength routing switch.
Summary of the invention
Defective or deficiency at above-mentioned prior art exists the objective of the invention is to, provide a kind of based on acoustooptic effect small-sized, at a high speed, plane monolithic integrated acousto-optic wavelength route photoswitch implementation method that cost performance is high.
To achieve these goals, the applicant finds that in acoustooptic effect acoustooptic effect has the advantage that can realize 1*N basic structure, has utilized this characteristic in the acousto-optic spectrum analyzer of having realized just.The solution thinking of applicant's technical scheme is, the acoustooptic effect characteristic is used for wavelength route light switch design, and combines with waveguide lens, can realize multi-channel sound and light waveguide wavelength route photoswitch.
Technical solution of the present invention is, the implementation method of a kind of plane monolithic integrated acousto-optic wavelength route photoswitch, based on the acoustooptic effect principle, it is characterized in that, the switch chip two ends are provided with the input optical fibre array of N port and the output optical fibre array of N port, two optical waveguide lenss and one group of interdigital transducer are set on the chip, and they connect by waveguide light path successively, and wavelength routing switch implementation procedure may further comprise the steps:
1) expand bundle: waveguide lens expands bundle to the light beam by the arbitrary port input of M port input optical fibre array, becomes the parallel beam of wide aperture;
2) deflection: the parallel beam that expands after restrainting is deflected to different directions by the acoustic grating that interdigital transducer excites by wavelength;
3) focus on: waveguide lens focuses on the deflection of different directions the different port of output optical fibre array;
4) wavelength route: from the wavelength-division-multiplexed optical signal of incident end incident at exit end according to the outgoing of wavelength route principle.
Some other characteristics of the present invention are that what each port of N port input optical fibre array was imported all is N wave-length division multiplexing optical signal;
The incident wavelength-division-multiplexed optical signal is according to the outgoing of wavelength route principle, and the N wave-length division multiplexing optical signal of promptly same incident end incident shines N different exit end, and the co-wavelength light of N incident end incident shines N different exit ends.A kind of typical wavelength-division routing rule of following expression:
| in1??in2????in3????...????inN | |
| ?out1 ?out2 ?out3 ?↓ ?outN | λ 1?λ N??λ N-1?????????λ 2λ 2?λ 1??λ N???????????λ 3λ 3?λ 2??λ 1??????????λ 4↓???↓?????↓?????↓?????↓ λ N?λ N-1λ N-2?????????λ 1 |
The interdigital transducer excitation that acoustic grating is powered up by the driving power output port, and be not that all interdigital transducers are all worked simultaneously, the a certain moment, have only by the driving power output port of computer programming control institute gating and could power up, produce corresponding acoustic grating for coupled interdigital transducer;
The structure of each interdigital transducer and relative space position are to each other determined by light path design in the interdigital transducer group;
Described expansion bundle and focusing process realize by the waveguide lens that bore is big, aberration is little.
Plane of the present invention monolithic integrated acousto-optic wavelength route photoswitch implementation method adopts the acoustooptic effect characteristic, can reduce switch technology difficulty, reduce cost, improve yield rate, the realization that helps producing in batches; Compare with the existing machinery switch simultaneously, switching speed improves greatly.
Description of drawings
Fig. 1 is a routing switch function implementation procedure synoptic diagram of the present invention;
Fig. 2 is a function element synoptic diagram of realizing each step among Fig. 1.
Fig. 3 is one embodiment of the present of invention.
Embodiment
The present invention is described in further detail below in conjunction with embodiment that accompanying drawing and inventor provide.
Referring to Fig. 1, the multiplexing light of N wave-length division of a certain passage incident wants to realize wavelength-division route light switch function from N port input optical fibre array, must be through expanding bundle, deflection, focusing on this several steps.
Be illustrated in figure 2 as the function element that realizes each step among Fig. 1.
Expanding bundle is realized by waveguide lens 3: thus go into waveguide lens 3 and expanded bundle through planar light waveguide 6 is laggard after a certain passage incident of wavelength-division multiplex light from N port input optical fibre array 1;
Deflection is realized by interdigital transducer 4 formed acoustic gratings.The interdigital surface acoustic wave that excites of certain several gating interacts with the parallel beam that expands behind the bundle in 4 groups of the interdigital transducers, makes that the light of different incident ends, different wave length is diffracted and forms along the parallel beam of different directions transmission; The excitation power supply 7 of computing machine 8 programming Control gatings inspires ultrasound wave and drives interdigital transducer group 4, forms different interdigital transducer combinations, inspires different acoustic gratings, with parallel beam generation acousto-optic interaction, can change the direction of deflected beam.
Focusing is realized by waveguide lens 5.Parallel beam after the deflection is focused on by it after planar waveguide is transferred to second waveguide lens 5, forms different outgoing luminous points, enters into the different port of output optical fibre array 2.
Implementation method is based on the acoustooptic effect principle, implementation adopts waveguide lens light path and acoustooptic deflection mechanism, the multichannel wavelength-division-multiplexed optical signal of incident is through expanding operations such as bundle, deflection, focusing, ultrasonic power driving interdigital transducer by computer programming control motivates to such an extent that acoustic grating is selected yawing moment, and control is directed to N different output terminal from the light of arbitrary incident end incident according to wavelength route principle.
The present invention expands bundle and realizes with the waveguide lens that focuses on by bore is big, aberration is little in the method that realizes plane monolithic integrated acousto-optic wavelength route photoswitch; Beam deflection realizes by the big drift angle acoustic grating type acoustooptic deflection mechanism that interdigital transducer excites; The gating of interdigital transducer is controlled by computer programming and is realized, changes the interdigital transducer combination of gating, can change the diffraction grating that excites, thereby change the diffraction direction of light, makes emergent light enter different output optical fibre ports; Add on each interdigital transducer and excite the sound field frequency can be identical or different; Incident light enters the switch acp chip by the incident optical array, and what each port was imported all is N wave-length division multiplexing optical signal; Be output as the wavelength-division-multiplexed optical signal of arranging according to wavelength-division route principle, draw signal by the emergent light fibre array.
Fig. 3 is the wavelength route photoswitch of the input of one 2 port 2 wavelength, the output of 2 ports.Among the figure, waveguide lens adopts the optical waveguide geodesic lens, and interdigital transducer adopts and refers to the interdigital transducer group that spacing equates with finger beam.Wavelength X
1=1550nm, λ
2The wavelength division multiplexed light of=1310nm is injected in the planar light waveguide of switch chip along incident optical port in1, the in2 of spacing 250 μ m, inlet port footpath diameter is 5mm afterwards, focal length is the optical waveguide geodesic lens of 4mm, be unfolded and be parallel beam, by the acoustic grating deflection of two interdigital transducer excitations of A, B, A group transducer finger beam a=b=2.9 μ m refers to long L=2.02mm afterwards, refer to that logarithm is 50 pairs, the driving power frequency f
1=300MHz; The interdigital width a=b=2.4 of B transducer μ m, long L=1.99mm refers to that logarithm is 50 pairs, institute adds frequency f
2=350MHz.If computing machine gating interdigital transducer A and B, the then λ of in1 port
1Light enters out1, λ
2Light enters out2; The λ of while in2 port
1Light enters out2, λ
2Light enters out1, has realized the wavelength-division routing function.
Claims (7)
1. implementation method based on the plane monolithic integrated acousto-optic wavelength route photoswitch of acoustooptic effect, it is characterized in that, the switch chip two ends are provided with the input optical fibre array [1] of N port and the output optical fibre array [2] of N port, two optical waveguide lenss [3], [5] and one group of interdigital transducer [4] are set on the chip, they connect by waveguide [6] light path successively, and wavelength routing switch implementation procedure may further comprise the steps:
1) expand bundle: waveguide lens [3] expands bundle to the light beam by the arbitrary port input of M port input optical fibre array [1], becomes the parallel beam of wide aperture;
2) deflection: expand parallel beam behind the bundle and be driven the acoustic grating that interdigital transducer [4] that power supply [7] powers up excites and deflect to different directions by wavelength;
3) focus on: waveguide lens [5] focuses on the deflection of different directions the different port of output optical fibre array [2];
4) wavelength route: from the wavelength-division-multiplexed optical signal of incident end incident at exit end according to the outgoing of wavelength route principle.
2. the implementation method of plane as claimed in claim 1 monolithic integrated acousto-optic wavelength route photoswitch is characterized in that, what each port of N port input optical fibre array [1] was imported all is N wave-length division multiplexing optical signal.
3. the implementation method of plane as claimed in claim 1 monolithic integrated acousto-optic wavelength route photoswitch, it is characterized in that, the incident wavelength-division-multiplexed optical signal is according to the outgoing of wavelength route principle, the N wave-length division multiplexing optical signal that is the incident of same incident end shines N different exit end, and the co-wavelength light of N incident end incident shines N different exit ends.
4. the implementation method of plane as claimed in claim 1 monolithic integrated acousto-optic wavelength route photoswitch, it is characterized in that, interdigital transducer [4] excitation that acoustic grating is powered up by driving power [7] output port, and be not that all interdigital transducers are all worked simultaneously, the a certain moment, have only by driving power [7] output port of computing machine [8] programming Control institute gating and could power up, produce corresponding acoustic grating for coupled interdigital transducer [4].
5. as the implementation method of claim 1 or 4 described plane monolithic integrated acousto-optic wavelength route photoswitches, it is characterized in that the frequency of each driving power [7] can be identical or different.
6. the implementation method of plane as claimed in claim 1 monolithic integrated acousto-optic wavelength route photoswitch is characterized in that, the structure of each interdigital transducer and relative space position are to each other determined by light path design in interdigital transducer [4] group.
7. the implementation method of plane as claimed in claim 1 monolithic integrated acousto-optic wavelength route photoswitch is characterized in that, described expansion bundle and focusing process realize by the waveguide lens that bore is big, aberration is little.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101059837A CN1323322C (en) | 2003-11-28 | 2003-11-28 | Implement method for plane single scale intergration acoustooptic wavelength route optical switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101059837A CN1323322C (en) | 2003-11-28 | 2003-11-28 | Implement method for plane single scale intergration acoustooptic wavelength route optical switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1544988A true CN1544988A (en) | 2004-11-10 |
| CN1323322C CN1323322C (en) | 2007-06-27 |
Family
ID=34333961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2003101059837A Expired - Fee Related CN1323322C (en) | 2003-11-28 | 2003-11-28 | Implement method for plane single scale intergration acoustooptic wavelength route optical switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1323322C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100465676C (en) * | 2007-04-17 | 2009-03-04 | 浙江大学 | Prague grate and MOS structure based wavelength selection light switch |
| CN109298404A (en) * | 2018-10-22 | 2019-02-01 | 上海交通大学 | Integrated two-dimensional beam steering arrangements based on lens |
| JP2020154017A (en) * | 2019-03-18 | 2020-09-24 | 株式会社東芝 | Optical deflection element, optical deflection device and moving body |
| CN113330632A (en) * | 2019-03-14 | 2021-08-31 | 株式会社藤仓 | Switching device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3248573B2 (en) * | 1998-08-13 | 2002-01-21 | 日本電気株式会社 | Optical delay device and optical delay method |
| US6370167B1 (en) * | 1998-09-29 | 2002-04-09 | Corning O.T.I. S.P.A. | Double-passage acousto-optical device and laser |
| WO2001063351A1 (en) * | 2000-02-22 | 2001-08-30 | Light Management Group Inc. | Acousto-optical switch for fiber optic lines |
| CN2497328Y (en) * | 2001-09-14 | 2002-06-26 | 华中科技大学 | Multi-layer-coupled photoswitch array |
| CN2544291Y (en) * | 2002-05-17 | 2003-04-09 | 李志扬 | Array waveguide interference device based optical switch array |
-
2003
- 2003-11-28 CN CNB2003101059837A patent/CN1323322C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100465676C (en) * | 2007-04-17 | 2009-03-04 | 浙江大学 | Prague grate and MOS structure based wavelength selection light switch |
| CN109298404A (en) * | 2018-10-22 | 2019-02-01 | 上海交通大学 | Integrated two-dimensional beam steering arrangements based on lens |
| CN109298404B (en) * | 2018-10-22 | 2023-05-23 | 上海交通大学 | Integrated two-dimensional light beam steering device based on lens |
| CN113330632A (en) * | 2019-03-14 | 2021-08-31 | 株式会社藤仓 | Switching device |
| JP2020154017A (en) * | 2019-03-18 | 2020-09-24 | 株式会社東芝 | Optical deflection element, optical deflection device and moving body |
| JP7051742B2 (en) | 2019-03-18 | 2022-04-11 | 株式会社東芝 | Optical deflector, optical deflector and mobile |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1323322C (en) | 2007-06-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5692865B2 (en) | Wavelength cross-connect equipment | |
| CA2486742C (en) | Wavelength cross-connect | |
| JP3862995B2 (en) | Optical switch module | |
| US20160360301A1 (en) | Contentionless NxM Wavelength Cross Connect | |
| US11728919B2 (en) | Optical communications apparatus and wavelength selection method | |
| US7162115B2 (en) | Multiport wavelength-selective optical switch | |
| JP2002258177A (en) | Optical switch | |
| CN1323322C (en) | Implement method for plane single scale intergration acoustooptic wavelength route optical switch | |
| US6366715B1 (en) | Free space optical switch with lenses for re-collimating the light | |
| Harris et al. | Acousto-optic photonic switch | |
| US7715668B2 (en) | Polarization-independent two-dimensional photonic crystal multiplexer/demultiplexer | |
| CN112305674B (en) | Light cross device | |
| CN1232845C (en) | Plane single scale intergration acoustooptic wavelength route optical switch | |
| JP4090286B2 (en) | Light switch | |
| CN102208737A (en) | Tunable multi-wavelength generation unit | |
| CN111487725B (en) | Integrated two-dimensional light beam steering device based on cylindrical lens | |
| CN1874195B (en) | Multiplexing / demultiplexing ROADM based on TFF | |
| CN1609641A (en) | Two-dimensional photon crystal power separator | |
| CN112152750B (en) | Wavelength selective switch and related device | |
| CN202075525U (en) | Tunable multi-wavelength generation unit | |
| JP3042664B2 (en) | Optical frequency selection switch | |
| CN1567003A (en) | Method for realizing single chip integration N*N acoustic-optical waveguide type programmed optical switch | |
| WO2023274317A1 (en) | Wavelength selective switch | |
| US7013061B2 (en) | 2×2 optical switching apparatus using photonic crystal structures | |
| EP1337900B1 (en) | Schaltungsanordnung |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070627 Termination date: 20101128 |