CN104503184A - Micro-ring resonator-based novel four-line to two-line electro-optical priority encoder - Google Patents
Micro-ring resonator-based novel four-line to two-line electro-optical priority encoder Download PDFInfo
- Publication number
- CN104503184A CN104503184A CN201410774668.1A CN201410774668A CN104503184A CN 104503184 A CN104503184 A CN 104503184A CN 201410774668 A CN201410774668 A CN 201410774668A CN 104503184 A CN104503184 A CN 104503184A
- Authority
- CN
- China
- Prior art keywords
- micro
- ring
- straight
- ring resonator
- optical waveguide
- 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
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F2/00—Demodulating light; Transferring the modulation of modulated light; Frequency-changing of light
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
- G02B6/12—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind
- G02B6/122—Basic optical elements, e.g. light-guiding paths
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Nonlinear Science (AREA)
- Optical Integrated Circuits (AREA)
- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
Abstract
The invention discloses a micro-ring resonator-based novel four-line to two-line electro-optical priority encoder. The priority encoder comprises four micro-ring resonators and three straight waveguides, wherein the first straight waveguide is vertically crossed with the second straight waveguide to form a rectangular coordinate system; the third straight waveguide is parallel to the first straight waveguide; a silicon-based nanowire micro ring of one micro-ring resonator is positioned at a fourth quadrant of the rectangular coordinate system and is positioned between the first straight waveguide and the third straight waveguide; a silicon-based nanowire micro ring of the second micro-ring resonator is positioned at a third quadrant of the rectangular coordinate system; silicon-based nanowire micro rings of the rest two micro-ring resonators are positioned at a second quadrant of the rectangular coordinate system. According to the priority encoder, the bottleneck problems of speed, power consumption, gate delay, hazard and risk and the like in the conventional electrical encoder are solved, high-speed large-capacity information processing is realized, the error tolerant rate is high, and the priority encoder can play an important role in photonic communication and photonic information processing systems on the premise that the conditions that a device is small in size and low in power consumption and a modern integrated circuit is easy to integrate are kept.
Description
Technical field
The invention belongs to technical field of photo communication, relate to a kind of electric light priority encoder, particularly relate to a kind of novel 4 line-2 line electric light priority encoders based on micro-ring resonator.
Background technology
Along with the continuation of semiconductor technology develops, the integrated level of chip or integrated circuit is more and more higher, the size of integrated component reduces further, and the electric leakage of conventional electrical device and heat dissipation problem cannot well solve, and clock skew and the electromagnetic interference (EMI) of circuit are also more and more serious.The processing speed faster that people require cannot rely on the electronic circuit adopting electronics to do information carrier to obtain, and optical communication and optical computing system are using photon as information carrier, photon neutral, there is not electromagnetic field and interact between them.A few propagation of bundle parallel light, mutually cross transmission in free space, do not disturb each other, the concurrency of optical signal transmission makes optical system have the information channel wider than electricity system; Wire interconnects, photon hardware is replaced to replace electronic hardware, replace electric computing with optical operation with light network, integrated optical circuit is formed by optical fiber and various optical element, greatly can improve the ability to data operation, transmission and storage, add the low power consuming of photonic device, photonic device has caused the attention of more and more scientific research personnel.
In computer systems, which, in order to distinguish a series of things, by the binary code representation of each things wherein, the implication that Here it is encodes.The logic function of scrambler produces this binary series code exactly.Scrambler communicates and requisite element in computational grid.Optical encoder is also indispensable for optical information system, but the fault freedom of conventional coders is poor, when to input multiple signal simultaneously, will cause confusion or the coding of mistake.
Summary of the invention
The object of this invention is to provide novel 4 line-2 line electric light priority encoders based on micro-ring resonator that a kind of serious forgiveness is good, when inputting multiple signal at the same time, can encode according to the signal that pre-determined priority is the highest to priority, there will not be the coding of confusion or mistake.
For achieving the above object, the technical solution adopted in the present invention is: a kind of novel 4 line-2 line electric light priority encoders based on micro-ring resonator, comprise four micro-ring resonators and three straight wave guides, the first straight wave guide in three straight wave guides and the second straight wave guide intersect vertically, form a rectangular coordinate system, 3rd straight wave guide parallels with the first straight wave guide, the 3rd straight wave guide and the first straight wave guide non-intersect; The micro-ring of silica-based nanowire of a micro-ring resonator is positioned at the fourth quadrant of this rectangular coordinate system, and the micro-ring of this silica-based nanowire is between the first straight wave guide and the 3rd straight wave guide; The micro-ring of silica-based nanowire of second micro-ring resonator is positioned at the third quadrant of this rectangular coordinate system, the micro-ring of the silica-based nanowire of all the other two micro-ring resonators is positioned at the second quadrant of this rectangular coordinate system along the direction being parallel to the first straight wave guide, and in these two micro-ring resonators towards the micro-ring of silica-based nanowire of the micro-ring resonator of the second straight wave guide between the first straight wave guide and the 3rd straight wave guide.
Electric light priority encoder tool of the present invention has the following advantages:
1, utilize the natural characteristic of light to realize electro-optical encoder and replace traditional electricity scrambler, there is no the galvanomagnetic effect of conventional electrical device and the impact of dead resistance electric capacity, the information processing of high-speed high capacity can be realized.
2, the silicon materials SOI in dielectric substrate is adopted, namely at SiO
2insulation course grows one deck and have certain thickness monocrystalline silicon thin film, utilize the silicon waveguide that SOI material is made, its sandwich layer is Si(refractive index is 3.45), covering is SiO
2(refractive index is 1.44), the refractive index of covering and sandwich layer is very large, so this waveguide is very strong to the limitation capability of light field, makes its bending radius can be very little, is beneficial to large-scale integrated.
3, these 4 line-2 line electric light priority encoders are only made up of micro-ring resonator and three straight wave guides, wherein only have an intersection, and the loss except micro-ring and an intersection is negligible, therefore integral device loss is very little.
4, electric light priority encoder of the present invention adopts existing CMOS technology to make, and device volume is little, low in energy consumption, favorable expandability, is convenient to integrate with other elements.
Accompanying drawing explanation
Fig. 1 is the structural representation of electric light priority encoder of the present invention.
Fig. 2 is the structural representation of the first micro-ring resonator in electric light priority encoder of the present invention.
Fig. 3 is the structural representation of the second micro-ring resonator in electric light priority encoder of the present invention.
Fig. 4 is the structural representation of the 3rd micro-ring resonator in electric light priority encoder of the present invention.
Fig. 5 is the structural representation of the 4th micro-ring resonator in electric light priority encoder of the present invention.
Fig. 6 is the structural representation of the electrode of micro-ring resonator MRR with silica-based Thermo-optical modulator in electric light priority encoder of the present invention.
Fig. 7 is the structural representation of the electrode of micro-ring resonator MRR with silicon-based electro-optical modulator in electric light priority encoder of the present invention.
In figure: 1. the first micro-ring resonator, 2. the second micro-ring resonator, 3. the 3rd micro-ring resonator, 4. the 4th micro-ring resonator, 5.Si substrate, 6.SiO
2layer, 7. heating electrode, 8. silicon waveguide;
11. first input waveguides, 12. first straight-through optical waveguides, 21. second input waveguides, 22. the 3rd input waveguides, 23. second straight-through optical waveguides, 24. first download optical waveguide, 31. the 4th input waveguides, 32. the 5th input waveguides, 33. the 3rd straight-through optical waveguides, 34. second download optical waveguide, 41. the 6th input waveguides, 42. the 3rd download optical waveguide, and 43. the 4th straight-through optical waveguides, 44. the 4th download optical waveguide.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is elaborated.
As shown in Figure 1, electric light priority encoder of the present invention, comprising:
Structure the first micro-ring resonator 1, first micro-ring resonator 1 as shown in Figure 2 comprises the micro-ring of the first silica-based nanowire
l 1, the first input waveguide 11 and the first straight-through optical waveguide 12; First micro-ring resonator 1 is with silicon-based electro-optical modulator or silica-based Thermo-optical modulator;
Structure the second micro-ring resonator 2, second micro-ring resonator 2 as shown in Figure 3 comprises the micro-ring of the second silica-based nanowire
l 2, the second input waveguide 21, the straight-through optical waveguide 23 and first of the 3rd input waveguide 22, second download optical waveguide 24; Second input waveguide 21 is connected with the first straight-through optical waveguide 12; Second micro-ring resonator 2 is with silicon-based electro-optical modulator or silica-based Thermo-optical modulator;
Structure the 3rd micro-ring resonator the 3, three micro-ring resonator 3 as shown in Figure 4 comprises the micro-ring of the 3rd base nano-wire
l 3, the 4th input waveguide 31, the 5th input waveguide 32, the 3rd straight-through optical waveguide 33 and second download optical waveguide 34; 4th input waveguide 31 is connected with the straight-through optical waveguide 23 of second in the second micro-ring resonator 2; 3rd micro-ring resonator 3 is with silicon-based electro-optical modulator or silica-based Thermo-optical modulator;
Structure the 4th micro-ring resonator the 4, four micro-ring resonator 4 as shown in Figure 5 comprises the micro-ring of the 4th silica-based nanowire
l 4, the 6th input waveguide 41, the 4th straight-through optical waveguide 43, the 3rd download optical waveguide 42 and the 4th and download optical waveguide 44; 6th input waveguide 41 is connected with the straight-through optical waveguide 33 of the 3rd in the 3rd micro-ring resonator 3; 3rd downloads optical waveguide 42 is connected with the 3rd input waveguide 22 in the second micro-ring resonator 2; 4th downloads optical waveguide 44 is connected with the 5th input waveguide 32 in the 3rd micro-ring resonator 3; 4th micro-ring resonator 4 is with silicon-based electro-optical modulator or silica-based Thermo-optical modulator;
The straight-through optical waveguide 23 of first input waveguide 11, first straight-through optical waveguide 12, second input waveguide 21, second, the 4th input waveguide 31, the 3rd straight-through optical waveguide 33, the 6th input waveguide 41 and the 4th straight-through optical waveguide 43 are positioned on the first straight wave guide successively; Second downloads optical waveguide 34, the 5th input waveguide 32 and the 4th download optical waveguide 44 is positioned on the second straight wave guide successively, this second straight wave guide and this first straight wave guide intersect vertically, and the 5th input waveguide 32 and the 4th downloads the both sides that optical waveguide 44 lays respectively at the first straight wave guide; First straight wave guide and the second straight wave guide form a rectangular coordinate system, the micro-ring of the first silica-based nanowire
l 1with the micro-ring of the second silica-based nanowire
l 2be positioned at the third quadrant of this rectangular coordinate system, and the micro-ring of the first silica-based nanowire
l 1away from the ordinate of this rectangular coordinate system, the micro-ring of the 3rd silica-based nanowire
l 3be positioned at the second quadrant of this rectangular coordinate system, the micro-ring of the 4th silica-based nanowire
l 4be positioned at the fourth quadrant of this rectangular coordinate system; First download optical waveguide 24, the 3rd input waveguide 22 and the 3rd download optical waveguide 42 is positioned on the 3rd straight wave guide successively, the 3rd straight wave guide parallels with the first straight wave guide, the 3rd straight wave guide and the second straight wave guide non-intersect, the micro-ring of the second silica-based nanowire
l 2with the micro-ring of the 4th silica-based nanowire
l 4be positioned at the region that the first straight wave guide and the 3rd straight wave guide surround.First straight wave guide, the second straight wave guide and the 3rd straight wave guide are Nanowire Waveguides.
The electrode of the micro-ring resonator MRR with silica-based Thermo-optical modulator, as shown in Figure 6, on Si substrate 5, growth has SiO
2layer 6, SiO
2layer 6 is provided with the silicon waveguide 8, SiO that SOI material is made
2layer 6 is also provided with heating electrode 7, heating electrode 7 and SiO
2form a cavity between layer 6, silicon waveguide 8 is positioned at this cavity; The lead-in wire of heating electrode 7 applies voltage, has electric current by heating electrode 7, make heating electrode 7 produce heat, changed the temperature of silica-based optical waveguide by thermal-radiating mode, thus change effective group index N of disc waveguide
g, then change the resonance wavelength of MRR, realize dynamic filter.
The electrode of the micro-ring resonator MRR with silicon-based electro-optical modulator, as shown in Figure 7, optical waveguide under this kind of modulating mechanism is p-i-n junction structure, high speed electrode is connect in the p district of two ends doping and n district, once apply voltage on contact conductor, will produce one by the electric field of positive pole to negative pole in optical waveguide, this electric field can cause the drift motion of charge carrier, change the carrier concentration in silica-based optical waveguide with this, thus change effective group index N of disc waveguide
g, then change the resonance wavelength of MRR, realize dynamic filter.
Visible, silica-based Thermo-optical modulator is not identical with the modulation principle of silicon-based electro-optical modulator, and silica-based Thermo-optical modulator relies on the temperature changing silica-based optical waveguide to change effective group index of waveguide.Silicon-based electro-optical modulator relies on to change carrier concentration in track optical waveguide to change the refractive index of waveguide.Because time that heat radiation is used is far longer than the life-span of nonequilibrium carrier.So the speed of electrooptical modulation is far away faster than the speed of thermo-optic modulation, but because the reason to waveguide doping, the structure of electrooptic modulator is more complicated than the structure of Thermo-optical modulator, and manufacturing process is also more complicated.Therefore generally use silicon-based electro-optic to modulate when needing at a high speed, and adopt silica-based thermo-optic modulation in the occasion not high to response device rate request.
The micro-ring of first silica-based nanowire
l 1, the micro-ring of the second silica-based nanowire
l 2, the micro-ring of the 3rd silica-based nanowire
l 3with the micro-ring of the 4th silica-based nanowire
l 4structural parameters identical, time unmodulated, these four micro-rings of silica-based nanowire are all at Same Wavelength place resonance, and this wavelength is the wavelength of input optical signal.
Below by the transmitting procedure analyzing light signal light in the micro-ring resonator shown in Fig. 2, Fig. 3, Fig. 4 and Fig. 5, the principle of work of brief description electric light priority encoder of the present invention:
For the first micro-ring resonator 1 shown in Fig. 2, assuming that optical signals first input waveguide 11 inputs, when light signal is through coupled zone (the straight-through optical waveguide 12 of the first input waveguide 11, first and the micro-ring of the first silica-based nanowire
l 1a nearest scope) time, light signal enters the micro-ring of the first silica-based nanowire by evanscent field coupling
l 1in, the micro-ring of the first silica-based nanowire
l 1in light signal also can be coupled in the first straight-through optical waveguide 12 by evanscent field coupling.For meeting condition of resonance (m × l=N
g× 2p × R, the N in formula
grepresent group index) light signal, when from micro-loop coupling to the first straight-through optical waveguide 12, can there is frosting phenomenon in the destructive interference that the phase differential due to two ways of optical signals causes in the first straight-through optical waveguide 12; And the light not meeting this condition of resonance can not meet destructive interference condition due to phase differential, therefore light signal can regard being exported from the first straight-through optical waveguide 12 by coupled zone of having no effect as;
For the second micro-ring resonator 2 shown in Fig. 3, assuming that optical signals second input waveguide 21 inputs, when light signal is through coupled zone (the straight-through optical waveguide 23 of the second input waveguide 21, second and the micro-ring of the second silica-based nanowire
l 2a nearest scope) time, light signal enters the micro-ring of the second silica-based nanowire by evanscent field coupling
l 2in, the micro-ring of the second silica-based nanowire
l 2in light signal also can be coupled into the second straight-through optical waveguide 23 and first by evanscent field coupling and download in optical waveguide 24.For meeting condition of resonance (m × l=N
g× 2p × R) light signal, when from micro-loop coupling to the second straight-through optical waveguide 23, due to the phase differential of two ways of optical signals, in light signal and the second input waveguide 21, be not coupled into the micro-ring of the second silica-based nanowire
l 2part disappear mutually, so can't detect the light wave of resonance wave strong point in the second straight-through optical waveguide 23, the light wave of corresponding wavelength can be downloaded in the first download optical waveguide 24 and export; And the light not meeting condition of resonance can regard being exported from the second straight-through optical waveguide 23 by coupled zone of having no effect as.When light signal inputs from the 3rd input waveguide 22, light signal enters the micro-ring of the second silica-based nanowire by evanscent field coupling
l 2in, the micro-ring of the second silica-based nanowire
l 2in light signal also can be coupled into the second straight-through optical waveguide 23 and first by evanscent field coupling and download in optical waveguide 24.For meeting condition of resonance (m × l=N
g× 2p × R) light signal, from micro-loop coupling to first download optical waveguide 24 time, due to the phase differential of two ways of optical signals, in light signal and the 3rd input waveguide 22, be not coupled into the micro-ring of the second silica-based nanowire
l 2part disappear mutually, so download in optical waveguide 24 first the light wave that can't detect resonance wave strong point, the light wave of corresponding wavelength can be downloaded in the second straight-through optical waveguide 23 and export; And the light not meeting condition of resonance can regard as have no effect by coupled zone from first download optical waveguide 24 export;
For the 3rd micro-ring resonator 3 shown in Fig. 4, assuming that optical signals the 4th input waveguide 31 inputs, when light signal is through coupled zone (the 4th input waveguide 31, the 3rd straight-through optical waveguide 33 and the micro-ring of the 3rd silica-based nanowire
l 3a nearest scope) time, light signal enters the micro-ring of the 3rd silica-based nanowire by evanscent field coupling
l 3in, the micro-ring of the 3rd silica-based nanowire
l 3in light signal also can be coupled into the 3rd straight-through optical waveguide 33 and second by evanscent field coupling and download in optical waveguide 34.For meeting condition of resonance (m × l=N
g× 2p × R) light signal, when from micro-loop coupling to the 3rd straight-through optical waveguide 33, due to the phase differential of two ways of optical signals, in light signal and the 4th input waveguide 31, be not coupled into the micro-ring of the 3rd silica-based nanowire
l 3part disappear mutually, so can't detect the light wave of resonance wave strong point in the 3rd straight-through optical waveguide 33, the light wave of corresponding wavelength can be downloaded in the second download optical waveguide 34 and export; And the light not meeting condition of resonance can regard being exported from the 3rd straight-through optical waveguide 33 by coupled zone of having no effect as.And when light signal inputs from the 5th input waveguide 32, light signal enters the micro-ring of the 3rd silica-based nanowire by evanscent field coupling
l 3in, the micro-ring of the 3rd silica-based nanowire
l 3in light signal also can be coupled into the 3rd straight-through optical waveguide 33 and second by evanscent field coupling and download in optical waveguide 34.For meeting condition of resonance (m × l=N
g× 2p × R) light signal, from micro-loop coupling to second download optical waveguide 34 time, due to the phase differential of two ways of optical signals, in light signal and the 5th input waveguide 32, be not coupled into the micro-ring of the 3rd silica-based nanowire
l 3part disappear mutually, so download in optical waveguide 34 second the light wave that can't detect resonance wave strong point, the light wave of corresponding wavelength can be downloaded in the 3rd straight-through optical waveguide 33 and export; And the light not meeting condition of resonance can regard as have no effect by coupled zone from second download optical waveguide 34 export.
For the 4th micro-ring resonator 4 shown in Fig. 5, assuming that optical signals the 6th input waveguide 41 inputs, when light signal is through coupled zone (the 6th input waveguide 41, the 4th straight-through optical waveguide 43 and the micro-ring of the 4th silica-based nanowire
l 4a nearest scope) time, light signal enters the micro-ring of the 4th silica-based nanowire by evanscent field coupling
l 4in, the micro-ring of the 4th silica-based nanowire
l 4in light signal also can be coupled into the 3rd by evanscent field coupling and download optical waveguide 42 and the 4th and download in optical waveguide 44.Same, can be downloaded completely by micro-ring for the light wave meeting resonance wavelength, because the 3rd downloads optical waveguide 42, the 4th download optical waveguide 44 relative to the micro-ring of the 4th silica-based nanowire
l 4of equal value, so the micro-ring of the 4th silica-based nanowire
l 4the luminous power of input optical signal can be divided into two parts and download optical waveguide 42 and the 4th download optical waveguide 44 straight wave guide output from the 3rd respectively; And for not meeting the light of condition of resonance by being exported from the 4th straight-through optical waveguide 43 by coupled zone of having no effect.
Upper surface analysis be static micro-ring resonator operating characteristic, sum up, the signal of what micro-ring resonator can be fixed is some wavelength (meeting the wavelength of condition of resonance) is downloaded, and the signal of some wavelength leads directly to (wavelength not meeting condition of resonance); During this devices function, also need the resonance wavelength of micro-ring resonator dynamically adjustable.By condition of resonance (
m × l=N g × 2p × R) find out, change silica-based nanowire micro-ring radius R and effective group index
n g all the resonance wavelength of the micro-ring of silica-based nanowire will be changed.Herein by regulating effective group index of micro-ring waveguide
n g change the resonance wavelength of the micro-ring of silica-based nanowire.Effective group index is relevant with the refractive index manufacturing the micro-ring material of silica-based nanowire, and the refractive index changing this material has two kinds of methods: one is to heating materials, change the temperature of material, utilize thermo-optic effect to change Refractive Index of Material, namely above-mentioned silica-based Thermo-optical modulator; Two is utilize electrooptical effect to change the refractive index of material by carrier injection, namely above-mentioned silicon-based electro-optical modulator.Due to hot modulating speed thermal convection rate, and electrical modulation speed depends on carrier lifetime, therefore electrical modulation speed, in High Speed System, adopt electrical modulation.
The course of work of electric light priority encoder of the present invention is described for hot modulating mechanism:
The continous-stable light signal of operation wavelength is in the first input waveguide 11 input of the first micro-ring resonator 1.Then in the hot modulating mechanism of each micro-ring resonator, load electric signal to be encoded, when this electric signal is encoded to low level, namely during logical zero, the electrode of Thermo-optical modulator does not have electric current to pass through, does not produce thermal effect, the refractive index of optical waveguide is unaffected; When this electric signal is encoded to high level, namely during logical one, under electric field action, the electrode of Thermo-optical modulator there is electric current to pass through, produce thermal effect, by heat radiation, optical waveguide is served to the effect of heating, so the refractive index of optical waveguide there occurs change, thus the resonance wavelength of micro-ring resonator can be changed.
If the state of certain micro-ring resonator when modulation signal is low level is logic ' 0 ', now micro-ring resonator resonance.State when modulation signal is high level is logic ' 1 ', now micro-ring resonator not resonance; Assuming that represent by logic ' 1 ' when output port has light signal to export, represent by logic ' 0 ' when output port exports without light signal; Each like this micro-ring resonator has ' 0 ' and ' 1 ' two states, for the various states combined, at three output ports, namely the first download optical waveguide 24, second download optical waveguide 34 and the 4th straight-through optical waveguide 43 all have corresponding light signal output state corresponding with it.The note electric signal logical value be carried in the hot modulating mechanism of the first micro-ring resonator 1 is
i 1 , the note electric signal logical value be carried in the hot modulating mechanism of the second micro-ring resonator 2 is
i 2 , the note electric signal logical value be carried in the hot modulating mechanism of the 3rd micro-ring resonator 3 is
i 3 , the note electric signal logical value be carried in the hot modulating mechanism of the 4th micro-ring resonator 4 is
i 4 , the output optical signal that note first downloads optical waveguide 24 is designated as
y 1 , the output optical signal that note second downloads optical waveguide 34 is designated as
y 2 , the output optical signal of the straight-through optical waveguide 43 of note the 4th is designated as
a.
The electric signal that this priority encoder loads is
i 1 ,
i 2 ,
i 3 ,
i 4 .Corresponding
i 1 be carried in the micro-ring of silica-based nanowire
l 1 silica-based Thermo-optical modulator on,
i 2 be carried in the micro-ring of silica-based nanowire
l 2 silica-based Thermo-optical modulator on,
i 3 be carried in the micro-ring of silica-based nanowire
l 3 on silica-based Thermo-optical modulator,
i 4 be carried in the micro-ring of silica-based nanowire
l 4 silica-based Thermo-optical modulator on.The order of priority is determined by the sequence of positions of each micro-ring, and this sequence of positions determines the sequencing that light signal arrives each micro-ring, and this order is more forward, and priority is higher; Thus reach the object of according to priority priority encoding.Therefore priority corresponding to this priority encoder is
i 1 >I 2 > I 3 > I 4 .
When
i 1 for low level time (
i 1 =0), corresponding first micro-ring resonator 1 is at input optical wavelength place resonance, from the analysis to Fig. 2, this wavelength light wave can by delustring in coupled zone, namely the light signal in the first straight-through optical waveguide 12 is ' 0 ', in the second input waveguide 21 in second micro-ring resonator 2, optical signal power is ' 1 ', so no matter
i 2 , I 3 , I 4 for which kind of state, output port
y 1 , Y 2 all can't detect light wave export (
y 1 =
y 2 =0);
When
i 1 for high level time (
i 1 =1), corresponding first micro-ring resonator 1 is modulated, and its resonance wavelength departs from optical wavelength, therefore the light wave of input continues forward direction, in first straight-through optical waveguide 12, optical signal power is that in the second input waveguide 21 in the ' 1 ', second micro-ring resonator 2, optical signal power is ' 1 ', when
i 2 for low level time (
i 2 =0), corresponding second micro-ring resonator 2 is at input optical wavelength place resonance, and from the analysis to accompanying drawing 3, in the second straight-through optical waveguide 23, luminous power is ' 0 ', and in the first download optical waveguide 24, optical signal power is ' 1 '.Therefore no matter
i 3 , I 4 be in which kind of state, input light wave all will be downloaded by the second micro-ring resonator 2 completely, and by
y 1 port exports (
y 1 =1,
y 2 =0).
When
i 1 , I 2 for high level time (
i 1 =1,
i 2 =1), corresponding first micro-ring resonator 1 and the second micro-ring resonator 2 are all modulated, micro-ring resonant wavelength departure optical wavelength, therefore the light wave of input continues forward direction, and in the 4th input waveguide 31 of the 3rd micro-ring resonator 3, optical signal power is ' 1 '.When
i 3 for low level time (
i 3 =0), corresponding 3rd micro-ring resonator 3 is at input optical wavelength place resonance, and from the analysis to accompanying drawing 4, in the 3rd straight-through optical waveguide 33, the power of light signal is the ' 0 ', second power downloading light signal in optical waveguide 34 is ' 1 '.No matter
i 4 be in which kind of state, input light wave all will be downloaded by the 3rd micro-ring resonator 3 completely completely, by
y 2 port exports (
y 1 =0,
y 2 =1).
When
i 1 , I 2 , I 3 for high level time (
i 1 =1,
i 2 =1,
i 3 =1), corresponding first micro-ring resonator 1, second micro-ring resonator 2 and the 3rd micro-ring resonator 3 are modulated, the resonance wavelength of these three micro-ring resonators departs from optical wavelength, therefore the light wave of input continues forward direction, in the 6th input waveguide 41 of the 4th micro-ring resonator 4, optical signal power is ' 1 '.When
i 4 for low level time (
i 4 =0), corresponding 4th micro-ring resonator 4 is at input optical wavelength place resonance, from the analysis to Fig. 5, input light wave will be downloaded by micro-ring, and be divided into two parts and download optical waveguide 42 and the 4th by the 3rd and download optical waveguide 44 and export simultaneously, the 3rd downloads optical waveguide 42, the 4th, and to download the power of light signal in optical waveguide 44 be ' 1 '.Due to the second micro-ring resonator 2 now and the 3rd micro-ring resonator 3 all not resonance, will be straight-through and download optical waveguide 24 and second by first and download optical waveguide 34 and export from the light signal of the 3rd input waveguide 22 and the input of the 5th input waveguide 32, finally from
y 1 , Y 2 port exports (
y 1 =
y 2 =1).
If
i 1 , I 2 , I 3 , I 4 when being high level (
i 1 =1,
i 2 =1,
i 3 =1,
i 4 =1), the first corresponding micro-ring resonator 1, second micro-ring resonator 2, the 3rd micro-ring resonator 3 and the 4th micro-ring resonator 4 are all modulated, and input light wave will directly export from straight-through optical waveguide, finally by
aport exports (
a=1,
y 1 =
y 2 =0).Now, electric light priority encoder of the present invention does not work.
Describe according to duty above, make the logic true value table of basis 4 line-2 line electric light priority encoder shown in table 1.
The logic true value table of table 14 line-2 line electric light priority encoder
As can be seen from Table 1, when
awhen the logical value exported is 1, electric light priority encoder not in working order, only has and works as
alogical output values when being 0, from
y 1 , Y 2 the light logic value detected could as the result of Part Number.Table 1 intuitively understands: electric light priority encoder of the present invention can realize the priority encoding computing of 4 line-2 lines.The present invention according to priority
i 1 >I 2 > I 3 > I 4 rule, by Output rusults by
y 1 , Y 2 the light logic value detected represents.
In electric light priority encoder of the present invention, the first input waveguide 11 of the first micro-ring resonator 1 inputs the light signal of continuous constant fixed wave length; Load to be encoded low and high level electric signal higher than the 3rd micro-ring resonator 3 higher than the priority orders of the 4th micro-ring resonator 4 higher than the second micro-ring resonator 2 by the first micro-ring resonator 1 according to putting in order of four micro-ring resonators, electric signal to be encoded acts on the micro-ring of each correspondence by modulating mechanism; When voltage signal is high level, each micro-ring resonator is in the off resonance of input optical wavelength place, and light signal leads directly to; When voltage signal is low level, each micro-ring resonator is at input optical wavelength place resonance, and the light signal of corresponding wavelength is downloaded by micro-ring.Thus electric light priority encoder of the present invention allows to input multiple signal simultaneously, and a priority encoder only signal the highest to its medium priority is encoded, and so just make the serious forgiveness of scrambler greatly improve, job stability is better.The light signal that download optical waveguide in download optical waveguide in second micro-ring resonator 2 and the 3rd micro-ring resonator 3 exports forms the final coding result of electric light priority encoder jointly, and the coding result of this output directly can input next stage computing or pass into photodetector and read coding result.
The present invention 4 line-2 line electric light priority encoder, is realized by 4 micro-ring resonator MRR and 3 Nanowire Waveguides made with the semiconductor material on insulator.Input is the continuous laser signal that four low and high level electric signal to be encoded and are in operating wave strong point, output be that two-way is to the light signal after electric signal coding.The elementary cell of each micro-ring resonator MRR is the micro-ring resonator MRR photoswitch of the hot modulating mechanism of band or electrical modulation mechanism, the mode of action of 4 electric signal to respective MRR to be encoded is as follows: when being added in the modulation signal on micro-ring and being high level, the resonance frequency of MRR offsets, in the wavelength place off resonance of input laser; When being added in the modulation signal on micro-ring and being low level, MRR is at the wavelength place resonance of input laser, and light signal is downloaded.The process of coding is: at the continuous laser of an optical port input particular job wavelength of device, 4 low and high level electric signal to be encoded act on 4 MRR by the priority ranking determined respectively, just export the coding result corresponding with the electric signal that 4 input with the form of light logic at two signal output ports, thus complete 4 line-2 line priority encoding functions.This scrambler has specific priority, and when there is multiple input signal, only the highest to priority signal is encoded simultaneously.
This electric light priority encoder overcomes the bottleneck problems such as speed, power consumption, gate delay and race and hazard in conventional electrical scrambler, and maintain device volume modern integrated circuits prerequisite little, low in energy consumption and easy of integration, can play a significant role in Photonic Communications and photon information disposal system.
Above-described instantiation; it is only the further description to object of the present invention, technical scheme and beneficial effect; institute it should be noted and the foregoing is only specific embodiments of the invention; be not limited to the present invention; within the spirit and principles in the present invention all; any amendment of making, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. novel 4 line-2 line electric light priority encoders based on micro-ring resonator, it is characterized in that, comprise four micro-ring resonators and three straight wave guides, the first straight wave guide in three straight wave guides and the second straight wave guide intersect vertically, form a rectangular coordinate system, 3rd straight wave guide parallels with the first straight wave guide, the 3rd straight wave guide and the first straight wave guide non-intersect; The micro-ring of silica-based nanowire of a micro-ring resonator is positioned at the fourth quadrant of this rectangular coordinate system, and the micro-ring of this silica-based nanowire is between the first straight wave guide and the 3rd straight wave guide; The micro-ring of silica-based nanowire of second micro-ring resonator is positioned at the third quadrant of this rectangular coordinate system, the micro-ring of the silica-based nanowire of all the other two micro-ring resonators is positioned at the second quadrant of this rectangular coordinate system along the direction being parallel to the first straight wave guide, and in these two micro-ring resonators towards the micro-ring of silica-based nanowire of the micro-ring resonator of the second straight wave guide between the first straight wave guide and the 3rd straight wave guide.
2. novel 4 line-2 line electric light priority encoders based on micro-ring resonator according to claim 1, it is characterized in that, the micro-ring of silica-based nanowire is positioned at rectangular coordinate system third quadrant and micro-ring resonator away from the second waveguide is the first micro-ring resonator (1), the first micro-ring resonator (1) comprise the micro-ring of the first silica-based nanowire (
l 1), the first input waveguide (11) and the first straight-through optical waveguide (12); First micro-ring resonator (1) is with silicon-based electro-optical modulator or silica-based Thermo-optical modulator; First input waveguide (11) and the first straight-through optical waveguide (12) are all positioned on the first straight wave guide, and the first input waveguide (11) is away from the second straight wave guide, and the first straight-through optical waveguide (12) is connected with the second micro-ring resonator (2).
3. novel 4 line-2 line electric light priority encoders based on micro-ring resonator according to claim 2, is characterized in that, described the second micro-ring resonator (2) comprise the micro-ring of the second silica-based nanowire (
l 2), the second input waveguide (21), the 3rd input waveguide (22), the second straight-through optical waveguide (23) and the first download optical waveguide (24); The micro-ring of second silica-based nanowire (
l 2) at rectangular coordinate system third quadrant and between the first straight wave guide and the 3rd straight wave guide; Second input waveguide (21) and the second straight-through optical waveguide (23) are positioned on the first straight wave guide along the direction towards the second straight wave guide successively, and the second input waveguide (21) is connected with the first straight-through optical waveguide (12); First download optical waveguide (24) and the 3rd input waveguide (22) are positioned on the 3rd straight wave guide along the direction towards the second straight wave guide successively, second straight-through optical waveguide (23) is connected with the 3rd micro-ring resonator (3), 3rd input waveguide (22) is connected with the 4th micro-ring resonator (4), and the second micro-ring resonator (2) is with silicon-based electro-optical modulator or silica-based Thermo-optical modulator.
4. novel 4 line-2 line electric light priority encoders based on micro-ring resonator according to claim 3, is characterized in that, the 3rd described micro-ring resonator (3) comprise the micro-ring of the 3rd silica-based nanowire (
l 3), the 4th input waveguide (31), the 5th input waveguide (32), the 3rd straight-through optical waveguide (33) and the second download optical waveguide (34); The micro-ring of 3rd silica-based nanowire (
l 3) being positioned at the second quadrant of rectangular coordinate system, the 4th input waveguide (31) and the 3rd straight-through optical waveguide (33) are positioned on the first straight wave guide along the direction towards the second straight wave guide successively, and the 4th input waveguide (31) and second leads directly to optical waveguide (23) and is connected; 5th input waveguide (32) and second is downloaded optical waveguide (34) and is positioned on the second straight wave guide successively along the direction away from the first straight wave guide, 5th input waveguide (32) is all connected with the 4th micro-ring resonator (4) with the 3rd straight-through optical waveguide (33), and the 3rd micro-ring resonator (3) is with silicon-based electro-optical modulator or silica-based Thermo-optical modulator.
5. novel 4 line-2 line electric light priority encoders based on micro-ring resonator according to claim 4, is characterized in that, the 4th described micro-ring resonator (4) comprise the micro-ring of the 4th silica-based nanowire (
l 4), the 6th input waveguide (41), the 4th straight-through optical waveguide (43), the 3rd download optical waveguide (42) and the 4th download optical waveguide (44); The micro-ring of 4th silica-based nanowire (
l 4) be positioned at the fourth quadrant of rectangular coordinate system; 6th input waveguide (41) and the 4th straight-through optical waveguide (43) are positioned on the first straight wave guide along the direction towards the second straight wave guide successively; 4th downloads optical waveguide (44) is positioned on the second straight wave guide, and the 3rd downloads optical waveguide (42) is positioned on the 3rd straight wave guide; 6th input waveguide (41) is connected with the 3rd straight-through optical waveguide (33); 3rd downloads optical waveguide (42) is connected with the 3rd input waveguide (22); 4th downloads optical waveguide (44) is connected with the 5th input waveguide (32); 4th micro-ring resonator (4) is with silicon-based electro-optical modulator or silica-based Thermo-optical modulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410774668.1A CN104503184B (en) | 2014-12-16 | 2014-12-16 | A kind of line electric light priority encoder of new 4 line 2 based on micro-ring resonator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410774668.1A CN104503184B (en) | 2014-12-16 | 2014-12-16 | A kind of line electric light priority encoder of new 4 line 2 based on micro-ring resonator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104503184A true CN104503184A (en) | 2015-04-08 |
| CN104503184B CN104503184B (en) | 2017-07-28 |
Family
ID=52944588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410774668.1A Active CN104503184B (en) | 2014-12-16 | 2014-12-16 | A kind of line electric light priority encoder of new 4 line 2 based on micro-ring resonator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104503184B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105071893A (en) * | 2015-07-24 | 2015-11-18 | 天津大学 | Novel large user capacity optical code division multiple access codec |
| CN106291820A (en) * | 2016-10-13 | 2017-01-04 | 兰州大学 | A kind of silicon-based integrated optical mode data exchange unit |
| CN106301381A (en) * | 2015-05-28 | 2017-01-04 | 华为技术有限公司 | Electric light 3-8 decoder |
| CN106950646A (en) * | 2017-03-02 | 2017-07-14 | 西安工程大学 | A kind of inside and outside double micro-ring resonator structures |
| CN108519641A (en) * | 2018-05-11 | 2018-09-11 | 兰州大学 | A kind of restructural optical mode conversion device |
| CN109799581A (en) * | 2019-03-11 | 2019-05-24 | 电子科技大学 | A kind of magnetic fluid silicon-based micro ring photoswitch |
| CN113115136A (en) * | 2021-03-17 | 2021-07-13 | 桂林电子科技大学 | Optical router bridging fault positioning method based on single fault model |
| CN114609726A (en) * | 2020-12-08 | 2022-06-10 | 军事科学院系统工程研究院网络信息研究所 | Ultra-narrow band filtering method based on-harmonic chip integrated cascade filter |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101910898A (en) * | 2007-11-15 | 2010-12-08 | 3M创新有限公司 | Optical microresonator |
| CN102156507A (en) * | 2010-12-27 | 2011-08-17 | 中国科学院半导体研究所 | Two-bit optical decoder based on micro-ring resonator |
| CN102522995A (en) * | 2011-11-22 | 2012-06-27 | 中国科学院半导体研究所 | Silicon-based integrated two-position binary electro-optical encoder |
-
2014
- 2014-12-16 CN CN201410774668.1A patent/CN104503184B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101910898A (en) * | 2007-11-15 | 2010-12-08 | 3M创新有限公司 | Optical microresonator |
| CN102156507A (en) * | 2010-12-27 | 2011-08-17 | 中国科学院半导体研究所 | Two-bit optical decoder based on micro-ring resonator |
| CN102522995A (en) * | 2011-11-22 | 2012-06-27 | 中国科学院半导体研究所 | Silicon-based integrated two-position binary electro-optical encoder |
Non-Patent Citations (2)
| Title |
|---|
| YONGHUI TIAN, LEI ZHANG, RUIQIANG JI, ET AL: "Demonstration of a directed optical decoder using two cascaded microring resonators", 《OPTICS LETTERS》 * |
| YONGHUI TIAN, LEI ZHANG, RUIQIANG JI,ET AL: "Demonstration of a directed optical encoder using microring-resonator-based optical switches", 《OPTICS LETTERS》 * |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106301381A (en) * | 2015-05-28 | 2017-01-04 | 华为技术有限公司 | Electric light 3-8 decoder |
| CN106301381B (en) * | 2015-05-28 | 2019-07-23 | 华为技术有限公司 | Electric light 3-8 decoder |
| CN105071893A (en) * | 2015-07-24 | 2015-11-18 | 天津大学 | Novel large user capacity optical code division multiple access codec |
| CN106291820A (en) * | 2016-10-13 | 2017-01-04 | 兰州大学 | A kind of silicon-based integrated optical mode data exchange unit |
| CN106291820B (en) * | 2016-10-13 | 2019-01-25 | 兰州大学 | A kind of silicon-based integrated optical mode data exchange unit |
| CN106950646A (en) * | 2017-03-02 | 2017-07-14 | 西安工程大学 | A kind of inside and outside double micro-ring resonator structures |
| CN108519641A (en) * | 2018-05-11 | 2018-09-11 | 兰州大学 | A kind of restructural optical mode conversion device |
| CN109799581A (en) * | 2019-03-11 | 2019-05-24 | 电子科技大学 | A kind of magnetic fluid silicon-based micro ring photoswitch |
| CN109799581B (en) * | 2019-03-11 | 2020-05-08 | 电子科技大学 | Magnetofluid silicon-based micro-ring optical switch |
| CN114609726A (en) * | 2020-12-08 | 2022-06-10 | 军事科学院系统工程研究院网络信息研究所 | Ultra-narrow band filtering method based on-harmonic chip integrated cascade filter |
| CN114609726B (en) * | 2020-12-08 | 2023-12-12 | 军事科学院系统工程研究院网络信息研究所 | Ultra-narrow band filtering method based on harmonic chip integrated cascade filter |
| CN113115136A (en) * | 2021-03-17 | 2021-07-13 | 桂林电子科技大学 | Optical router bridging fault positioning method based on single fault model |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104503184B (en) | 2017-07-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104503184A (en) | Micro-ring resonator-based novel four-line to two-line electro-optical priority encoder | |
| Urino et al. | First demonstration of high density optical interconnects integrated with lasers, optical modulators, and photodetectors on single silicon substrate | |
| CN106707657B (en) | A kind of control swap gate optical logic device based on micro-ring resonator | |
| CN102520904B (en) | Binary optical adder based on micro-ring resonators | |
| CN103955147A (en) | Control device of micro-ring optical switch | |
| CN103091869B (en) | Integrated coherent light communication electrooptical modulator structure | |
| Walker et al. | Optimized gallium arsenide modulators for advanced modulation formats | |
| CN103529521A (en) | Serially connected optical switch based photon delay structure and numerical-control integrated photon delay device | |
| CN111722451A (en) | Silicon-based optical Peres gate reversible logic device based on micro-ring resonator | |
| CN108182049B (en) | Binary optical full adder based on micro-ring resonator | |
| CN110275365B (en) | Binary all-optical one-out-of-four data selector | |
| CN105051598B (en) | A kind of optical numerical value full adder, the full adding method of optical numerical value and device | |
| CN104238233A (en) | Reconfigurable guiding logic device based on multiple-wavelength single-waveguide multiple-ring cascade structure | |
| CN104678676B (en) | A kind of reciprocal optical logical device based on micro-ring resonator | |
| CN104865772B (en) | A kind of three value optics reversible logic devices based on micro-ring resonator | |
| WO2016202146A1 (en) | Silicon-based modulator | |
| CN102540625B (en) | All-optical logic gate device based on nanowire waveguides of multislot silicon substrate | |
| CN104503185B (en) | A kind of binary optic subtracter based on micro-ring resonator | |
| CN209028383U (en) | A kind of binary system full optical comparator | |
| CN109240019B (en) | Binary all-optical comparator | |
| CN115755442A (en) | O-waveband multi-mode interference type silicon-based optical switch based on antimony sulfide on waveguide | |
| CN105634466A (en) | Electro-optical logic gate with SOI-based structure | |
| CN103595419A (en) | N-bit binary-system electro-optic odd-even checker | |
| CN210136383U (en) | Binary all-optical one-out-of-four data selector | |
| CN114815331B (en) | Optical full adder guide logic device applied to microwave photons |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |