CN1373380A - Switch array based on arc waveguide all-optical switch - Google Patents
Switch array based on arc waveguide all-optical switch Download PDFInfo
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- CN1373380A CN1373380A CN02111341A CN02111341A CN1373380A CN 1373380 A CN1373380 A CN 1373380A CN 02111341 A CN02111341 A CN 02111341A CN 02111341 A CN02111341 A CN 02111341A CN 1373380 A CN1373380 A CN 1373380A
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Abstract
A n X n switch array of all-optical switch based on arc waveguide is characterized by use of the all-optical switch with arc waveguide based on Kerr effect as its switch unit, the switch units are connected with each other in traditional shuffle mode, and different switch units can have different switch characteristics. Its advantages are simple structure, low cost and high switching speed.
Description
Technical field:
The present invention relates to a kind of array of photoswitch, particularly a kind of switch arrays based on the arc waveguide all-optical switch utilize the light intensity of input light to carry out switch control, belong to optical technical field.
Background technology:
Optical fiber communication more and more attracts much attention.Along with the sharp increase of message capacity, electron device is difficult to adapt at a high speed, jumbo communication requirement.Have only the light of employing switching technology just can address this problem, array of photoswitch is an important devices of forming the light replacement part.Array of photoswitch can be divided into mechanical optical switch array and waveguide type array of photoswitch, and the waveguide type array of photoswitch has than mechanical switch array switching speed faster, is used in the high speed optical communication system usually.Wherein constitute the waveguide type array of photoswitch and mostly be electric light or hot light all-optical switch, as H.Okayama in 1994 etc. at 1994 7 monthly magazine (Vol.30, the array of photoswitch that utilizes the lithium niobate electrooptical switching to constitute of No.14 pp1128-1129) Electronics Letter report, and the array of photoswitch of forming by the thermo-optic effect switch of report in U.S. optical communication meeting Technical Digest OFC ' 98 in 1998 such as R.Moosburger.These switch arrays utilizations add control circuit by hot light, thereby electrooptical effect changes waveguide index reaches the purpose of opening the light, and these external controls need be made electrode, well heater etc. when making waveguide, thereby make manufacture craft complicated more, cost of manufacture rises.In addition, the response level of the hot light of these switch arrays, electrooptical effect only is a nanosecond order, the switch of not competent higher rate.
Summary of the invention:
The objective of the invention is at the deficiencies in the prior art, propose a kind of new switch arrays, with light intensity gauge tap orientation, simplify manufacture craft, the application scenario that can be competent at faster switching rate simultaneously based on the arc waveguide all-optical switch.
For realizing such purpose, in the technical solution of the present invention, employing based on the arc waveguide all-optical switch of Kerr effect (based on the arc waveguide all-optical switch of optical kerr effect, Chinese patent publication number CN1305114A) as switch element, replace traditional hot light, electrooptical switching unit, constitute n * n switch arrays.Switch arrays have n input port, n output port, and the n value is 2 integer power.Connection waveguide shapes between the switch element adopts traditional shuffling (shuffle) connected mode.
The arc waveguide all-optical switch has two input ports, two output ports, constitute switch be shaped as two near or the arcs that overlap.Distance between two arc waveguides of the different switch elements of formation exchanging array can be different, and different switch elements is decided according to having different switching characteristics, its parameter specifically to select for use as required.
The switching characteristic of arc waveguide all-optical switch has the characteristic that quantizes significantly, and its switching characteristic can regulate by changing parameter, and these characteristics make it especially be fit to constitute array of photoswitch.Because each arc waveguide all-optical switch remains 2 * 2 photoswitches, it can constitute the switch arrays type of any electric light, thermo-optical switch formation.
Waveguide type switch based on Kerr effect is to carry out switch control by the intensity change refractive index of light beam, and its needed control information is controlled out or closed and no longer need to change waveguide index by extra electric field from light beam itself.Therefore, the present invention compares with conventional waveguide type switch arrays, has following beneficial effect:
1. switching speed is fast, is generally non-second (10
-15Second) magnitude, be fit to modern high-speed communications systems, not only can be used in network protection, the light bifurcated is multiplexing, in the packet switching system, and can be used in following hypervelocity system such as the optical time division multiplexing system (OTDM).
2. owing to the light intensity of carrying by light beam itself is carried out switch control,, do not need the control circuit of hot light, the needed complexity of electro-optical switch array so switch constitutes simply.
3. waveguide fabrication is simple, and production cost is low, the yield rate height.Hot light, electricity close switch arrays except producing waveguide, also need to make electrode, and switch arrays of the present invention do not need.
4. use extensively,, also can constitute any other form of closing switch arrays except forming the banyan network.
The drawing explanation:
Fig. 1 is the present invention 4 * 4banyan exchanging array structural representation.
As shown in the figure, constitute 4 * 4 switch arrays by 4 arc waveguide all-optical switch elements (9,10,11,12), wherein 1,2,3,4 is input port, and 5,6,7,8 is output port.
Fig. 2 is the switching characteristic curve of four switch elements among Fig. 1.
Wherein:
(a) the switching characteristic curve of No. 9 switch elements.
(b) the switching characteristic curve of No. 10 switch elements.
(c) the switching characteristic curve of No. 11 switch elements.
(d) the switching characteristic curve of No. 12 switch elements.
Embodiment:
Below by the present invention with 4 * 4banyan exchange network that Kerr effect arc waveguide photoswitch constitutes, discuss the principle of work of this array of photoswitch in detail.
4 * 4 the banyan exchanging array of Fig. 1, it constitutes unit 9,10,11,12 and is the arc waveguide all-optical switch.Each arc waveguide all-optical switch has two input ports and two output ports, switch be shaped as two close arcs.
Suppose that light imports from port one, from port one ' be output as 1 during output and be called pass-through state, be 0 during from port 2 ' output, be called crossing condition.Certainly because the arc waveguide all-optical switch has symmetry, light is output as 1 (pass-through state) during from port 2 ' output, from port one during from 2 inputs ' be 0 (crossing condition) during output.
The switch arrays that constitutes is shown four input ports 1,2,3,4, four output ports 5,6,7,8.In order to reach 4 * 4 switching purposes, need to adjust the structural parameters of 9,10,11,12 four switch elements, make its switching characteristic have Fig. 2 (a) respectively, 2 (b), 2 (c), the output characteristic curve shown in 2 (d).When promptly requiring input optical power between 0～P1,9,10, No. 11 switch elements are for pass-through state, and No. 12 switch element is in crossing condition.Input optical power is between P1～P2 the time, and 9,11, No. 12 switch element is in pass-through state, and No. 10 switch element is in crossing condition.Power input between P2～P3 unit, No. 12 switch element place pass-through states, 9,10, No. 11 switch element is in crossing condition.Power input is when P3～P4, and No. 10 switch element is in pass-through state, and 9,11, No. 12 switch elements are for crossing condition.The switching characteristic of whole 4 * 4 switch arrays can be from having 2 (a), 2 (b), and 2 (c), 2 (d) draw.As can be seen from Figure 2, when input optical power is 0～P1, can arrive different output terminals from four different port inputs, when its power input is respectively P1～P2, when P2～P3, P3～P4, also can reach the input light that makes different port and arrive different output ports.For the light beam that arrives different port, by controlling its luminous power, just can make it, thereby reach the purpose of 4 * 4 switch arrays from different output port output.
Claims (2)
1, a kind of switch arrays based on the arc waveguide all-optical switch, it is characterized in that adopting arc waveguide all-optical switch based on Kerr effect as switch element, constitute n * n switch arrays, switch arrays have n input port, n output port, the n value is 2 integer power, and connection waveguide shapes between the switch element adopts traditional shuffle connected mode of shuffling.
2, as the said switch arrays of claim 1 based on the arc waveguide all-optical switch, it is characterized in that two close or the overlap arcs that are shaped as of each switch element, each unit has different adjustable switching characteristics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021113416A CN1139826C (en) | 2002-04-12 | 2002-04-12 | Switch array based on arc waveguide all-optical switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021113416A CN1139826C (en) | 2002-04-12 | 2002-04-12 | Switch array based on arc waveguide all-optical switch |
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| Publication Number | Publication Date |
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| CN1373380A true CN1373380A (en) | 2002-10-09 |
| CN1139826C CN1139826C (en) | 2004-02-25 |
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| CNB021113416A Expired - Fee Related CN1139826C (en) | 2002-04-12 | 2002-04-12 | Switch array based on arc waveguide all-optical switch |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101237295B (en) * | 2008-03-06 | 2011-05-11 | 上海交通大学 | Full-light multicast optical switch system |
| CN104749518A (en) * | 2014-12-18 | 2015-07-01 | 吉林大学 | Device and method for measuring linearity of waveguide electro-optic switch array |
| CN106371175A (en) * | 2016-08-29 | 2017-02-01 | 北京工业大学 | Efficient compact non-blocking 4*4 waveguide optical switch matrix |
| CN106772819A (en) * | 2016-12-01 | 2017-05-31 | 南京邮电大学 | The interference-type all-optical switch of chalcogenide glass photonic crystal fiber 2 × 2 and control method |
| CN106990481A (en) * | 2017-05-11 | 2017-07-28 | 中国科学院半导体研究所 | A kind of 2 × 2 multimode optical switchings |
-
2002
- 2002-04-12 CN CNB021113416A patent/CN1139826C/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101237295B (en) * | 2008-03-06 | 2011-05-11 | 上海交通大学 | Full-light multicast optical switch system |
| CN104749518A (en) * | 2014-12-18 | 2015-07-01 | 吉林大学 | Device and method for measuring linearity of waveguide electro-optic switch array |
| CN104749518B (en) * | 2014-12-18 | 2017-09-29 | 吉林大学 | A kind of linearity measure device and method of waveguide electro-optic switch arrays |
| CN106371175A (en) * | 2016-08-29 | 2017-02-01 | 北京工业大学 | Efficient compact non-blocking 4*4 waveguide optical switch matrix |
| CN106371175B (en) * | 2016-08-29 | 2019-02-01 | 北京工业大学 | A kind of without hindrance 4 × 4 waveguide optical switch matrix of plunger type of high-efficiency compact |
| CN106772819A (en) * | 2016-12-01 | 2017-05-31 | 南京邮电大学 | The interference-type all-optical switch of chalcogenide glass photonic crystal fiber 2 × 2 and control method |
| CN106772819B (en) * | 2016-12-01 | 2019-04-30 | 南京邮电大学 | 2 × 2 interference-type all-optical switch of chalcogenide glass photonic crystal fiber and control method |
| CN106990481A (en) * | 2017-05-11 | 2017-07-28 | 中国科学院半导体研究所 | A kind of 2 × 2 multimode optical switchings |
| CN106990481B (en) * | 2017-05-11 | 2020-01-21 | 中国科学院半导体研究所 | 2X 2 multimode optical switch and network on chip |
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| Publication number | Publication date |
|---|---|
| CN1139826C (en) | 2004-02-25 |
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