CN101977336A - Bragg diffraction principle-based optical packet switching system and method - Google Patents
Bragg diffraction principle-based optical packet switching system and method Download PDFInfo
- Publication number
- CN101977336A CN101977336A CN201010557664XA CN201010557664A CN101977336A CN 101977336 A CN101977336 A CN 101977336A CN 201010557664X A CN201010557664X A CN 201010557664XA CN 201010557664 A CN201010557664 A CN 201010557664A CN 101977336 A CN101977336 A CN 101977336A
- Authority
- CN
- China
- Prior art keywords
- light
- optical
- cursor
- payload
- optical switch
- 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
Images
Abstract
The invention relates to a Bragg diffraction principle-based optical packet switching system and a Bragg diffraction principle-based optical packet switching method. The system comprises an optical packet generating module, an optical payload and optical label separation module, a label processing module and an optical switching module, wherein an optical packet generated by the optical packet generating module enters the optical payload and optical label separation module after passing through a fiber and then is separated into two paths of optical payload and one path of optical label, a routing control signal is output to the optical switching module after the optical label and one path of optical payload enter the label processing module, and the other path of optical payload directly enters the optical switching module and is output according to the routing control signal. The system and the method have the advantage of high transmission efficiency.
Description
Technical field
The invention belongs to technical field of optical fiber communication, relate in particular to the optical packet switching technique field.
Background technology
The continuous increase of network packet traffic carrying capacity has higher requirement for the exchange capacity of network node.For this reason, people have proposed the light packet switching (0ptical Packet Switching, OPS) technology have been considered to the direction of development of optical network of future generation, and is subjected to extensive concern.The smallest particles of light packet switching is the light grouping, and it is made up of light payload and cursor label two parts, the data that the light payload promptly need transmit, and it is all the time at the transmission of light territory, the data message that is equivalent to transmit in the optical transfer network; Cursor is signed the information of then carrying route and exchange, can carry out opto-electronic conversion at node, is used to control optical switch matrix, is equivalent to the control information in the ASON.
In optical packet switch network, the identification that cursor is signed is handled very crucial.Present existing cursor is signed the identification processing scheme and comprised: bit serial (Bit-serial) cursor is signed processing scheme, quadrature modulation (0rthogonal Modulation) cursor is signed processing scheme, and subcarrier (Subcarrier Multiplex:SCM) cursor signs processing scheme and multi-wavelength (Wavelength Division Multiplex:WDM) cursor is signed processing scheme etc.In the SCM tag processes scheme, light payload and cursor are signed by same wavelength transmission, and they adopt base band and subcarrier dot modulation technique to obtain respectively; This scheme can realize light payload and separating that cursor is signed very easily, but the intervention of subcarrier can reduce the transmission quality of channel.WDM tag processes scheme is signed with specific wavelength carrying cursor, thereby is easy to realize the identification of cursor label, but the cursor label have taken extra wavelength channel, have reduced the utilance of channel.
For WDM tag processes scheme and the SCM tag processes scheme that cursor is signed and the light payload separately transmits at frequency domain, utilize filter just can realize the extraction of label at the network node place, for example utilize Fiber Bragg Grating FBG (the Fiber Bragg Grating of an arrowband, FBG) filter, Prague (Bragg) wavelength alignment cursor is signed or the light payload, thereby cursor is signed with transmission of a reflection of light payload realized both separation, the FBG filter is the light sensitivity with fiber optic materials, in fibre core, form periodic index modulation and distribute, thereby the frequency of phase matched in the incident light wave is produced coherent reflection.The advantage of this scheme is simple in structure, be easy to realize, the back is just fixing unadjustable but the transmission characteristic of existing FBG filter completes, and can only handle the light grouping of a channel correspondence, and each channel all needs a FBG filter to carry out separating of cursor label and light payload like this.Because an optical fiber often comprises tens wavelength channels simultaneously, existing processing scheme just must be provided with the FBG filter of respective amount, has increased the complexity of optical packet switching system, has also reduced the flexibility and the efficiency of transmission of system simultaneously.
Summary of the invention
The objective of the invention is to sign the low deficiency of efficiency of transmission in the identification processing scheme, proposed optical packet switching system and method based on the Bragg diffraction principle in order to overcome existing cursor.
To achieve these goals, technical scheme of the present invention is: based on the optical packet switching system of Bragg diffraction principle, comprise light grouping generation module, light payload and cursor are signed separation module, label processing module and optical switch module, it is characterized in that, the light grouping that light grouping generation module produces is signed separation module by laggard light inlet payload of optical fiber and cursor and is separated into two-way light payload and one road cursor label, output route control signal was to optical switch module after cursor label and one road light payload entered label processing module, and another road light payload directly enters optical switch module and exports according to the route control signal.
Above-mentioned light grouping generation module comprises laser, light intensity modulator, data message terminal and microwave magneto optical modulator, and wherein laser is introduced the microwave magneto optical modulator with light behind light intensity modulator; The data message terminal has two ports, links to each other data that output will transmit and pairing routing iinformation respectively with the microwave magneto optical modulator with light intensity modulator.
Above-mentioned smooth payload and cursor are signed separation module and are comprised optical circulator, magneto-optic grating-enamel amber (MOG-FP) filter, beam splitter, and the light that the MOG-FP filter will be imported divides into groups, and a part of transmission is a part of reflects, thereby realizes separating of cursor label and light payload; Optical circulator will be outputed to beam splitter by optical signals port to the port that the MOG-FP filter reflects after its port receives the light grouping, the light signal of transmission directly is input to the MOG-FP filter from its port; Beam splitter will be imported light and be divided into two bundles, and wherein the decay of the port of beam splitter is same with the decling phase that passes through the MOG-FP filter, and port links to each other with optical switch matrix and exports the light payload.
Above-mentioned label processing module comprises two photodetectors and photodetector and luminous power comparator, photodetector and photodetector respectively the cursor of input are signed and the luminous power of light payload is converted into the signal of telecommunication, and the output of photodetector and photodetector links to each other with the luminous power comparator; The luminous power comparator calculates cursor by computing circuit and signs luminous power ratio with the light payload, and this luminous power ratio can be represented routing iinformation, and the output of luminous power comparator links to each other with route control unit; The light payload is divided into two-way by beam splitter, and one the tunnel enters following label processing module and cursor signs and carry out power ratio, extracts exchanging routing information and also sends into route control unit and produce the route control signal; Another road is by forming new light grouping behind the following optical switch matrix with by the new cursor label that produce of label generation module.
Optical switch module comprises optical switch matrix, route control unit, cursor label generation unit, the route control unit port links to each other with optical switch matrix, and route control unit is obtained the route control information with the output of control optical switch matrix to the light payload from the luminous power comparator; The input that cursor is signed generation unit links to each other with the output of optical switch matrix, and another input links to each other with the port of route control unit, to obtain the routing iinformation of next node, forms new light grouping.
To achieve these goals, the invention allows for light grouping exchange method, comprise step based on the Bragg diffraction principle:
(1) at light grouping generation module, the data that need to transmit are loaded into the light territory by light intensity modulator, and routing iinformation then is loaded into the light territory by the microwave magneto optical modulator, thereby form the light grouping;
(2) sign separation module at light payload and cursor, magneto-optic grating-enamel amber (MOG-FP) filter is signed and transmission and the reflection respectively of light payload cursor, and the cursor of realization light grouping is signed and separated with the light payload;
(3) in label processing module, cursor label and light payload are carried out power ratio, obtain the routing iinformation of luminous power than value representation, route control unit in the following optical switch module produces the route control signal according to this routing iinformation, and optical switch matrix carried out proper configuration, make the light payload exchange to output port corresponding with routing iinformation in the optical switch matrix, the optical switch matrix of optical switch module makes the light payload from correct port output by routing iinformation;
(4) at optical switch module, the routing iinformation of next node is signed generation unit by cursor and is loaded into the light territory, forms new light grouping with the light payload of optical switch matrix output, exports from optical switch module then;
Circulation repeats above-mentioned steps, just constantly forms new light grouping and continues to transmit to next node.
The invention has the beneficial effects as follows: the present invention utilizes the Bragg diffraction effect of microwave magneto optical modulator to produce the light grouping, label information is represented with the luminous power relative size of payload and label, adopt the lower microwave magnetostatic wave of frequency that the payload light signal is carried out the diffraction modulation, cursor is signed and is separated transmission with the light payload with slightly different frequencies in same wavelength channel, can have magnetic adjustable MOG-FP filter transmission and reflection by one, both are separated, basically can not influence the signal quality of payload, the also outer wavelength channel of occupying volume not is so the present invention has the characteristics of very high efficiency of transmission.Further, the present invention also have following a bit: (1) the present invention utilizes microwave magneto optical modulator light to produce cursor and signs, have simple in structure, be easy to integrated characteristics.(2) the present invention utilizes relative luminous power (being luminous power ratio) expression routing iinformation, is easy to handle on electric territory.(3) the present invention adopts the MOG-FP filter to carry out cursor to sign and to separate with the light payload, have the magnetic tunable characteristic, can be used for the processing to the multichannel wavelength signals, and as passive device, response speed is fast.(4) the cursor label method of the present invention's employing can be signed the scheme combination with other cursor, signs and quadrature modulating optical label as the bit serial cursor, thereby increases the label capacity.(5) the present invention utilizes the microwave magnetostatic wave to cause the Bragg diffraction, the diffraction light of output the and wavelength difference of diffraction light is unsuitable, the both unlikely too big width that surpasses single wavelength channel, the unlikely too for a short time again difficulty that causes separation.
Description of drawings
Fig. 1 is the integrally-built theory diagram of the present invention.
Fig. 2 is the integrally-built concrete theory diagram of the present invention that launches on Fig. 1 basis.
Fig. 3 is the frequency domain figure of the light signal of laser generation.
Fig. 4 is the time-domain diagram of the light signal of laser generation.
Fig. 5 represents the light grouping frequency domain figure of microwave magneto optical modulator output.
Fig. 6 represents MOG-FP filter 22 isolated cursors label frequency domain figures.
Fig. 7 represents MOG-FP filter 22 isolated smooth payload frequency domain figures.
Fig. 8 represents MOG-FP filter 22 isolated smooth payload time-domain diagrams.
Description of reference numerals: light grouping generation module 1, laser 11, light intensity modulator 12, data message terminal 13, microwave magneto optical modulator 14, light payload and cursor are signed separation module 2, optical circulator 21, MOG-FP filter 22, beam splitter 23, label processing module 3, photodetector 31, photodetector 32, luminous power comparator 33, optical switch module 4, optical switch matrix 41, route control unit 42, cursor label generation unit 43.
Embodiment
The present invention is described further below in conjunction with accompanying drawing.
As shown in Figure 1, optical packet switching system based on the Bragg diffraction principle, comprise light grouping generation module 1, light payload and cursor label separation module 2, label processing module 3 and optical switch module 4, the light grouping that light grouping generation module 1 produces is signed separation module 2 by laggard light inlet payload of optical fiber and cursor and is separated into two-way light payload and one road cursor label, cursor is signed and one road light payload enters label processing module 3 back output route control signals to optical switch module 4, and another road light payload directly enters optical switch module 4 and exports according to the route control signal.
As shown in Figure 2, below the concrete structure of forming optical packet switching system of the present invention is described further.
Light grouping generation module 1 comprises laser 11, light intensity modulator 12, data message terminal 13 and microwave magneto optical modulator 14, and wherein laser 11 is introduced microwave magneto optical modulator 14 with light behind light intensity modulator 12.Data message terminal 13 has two ports, links to each other data that output will transmit and pairing routing iinformation respectively with microwave magneto optical modulator 14 with light intensity modulator 12.
The operation principle and the acousto-optic modulator of microwave magneto optical modulator 14 are similar, and it is made up of optical coupling input, optical coupling output, magneto-optic thin film waveguide and externally-applied magnetic field unit.Adding magnetic field H
0Effect under, by length is the microstrip line transformation device (Microstrip Transducer) of L, microwave current can excite magnetostatic wave in thickness is the magneto-optic thin film of d, magnetostatic wave causes that the cycle of waveguide material refractive index changes, form the grating that moves, thereby Bragg (Prague) diffraction that causes the incident guided wave, its diffraction efficiency power ratio of incident light (diffraction light with) is relevant with the phase mismatch of microwave current intensity that excites magnetostatic wave and guided wave.Because diffraction efficiency is difficult to reach 100%, so the output guided wave can comprise diffraction light and diffraction light two parts not usually, the frequency displacement of diffraction light equals the magnetostatic wave frequency f
s, about 0.5-30GHz or higher frequency range.And according to the phase-matching condition in the Bragg diffraction, the multifrequency magnetostatic wave can be imported light to multichannel and modulate.In addition, studies show that when guided wave pulse duration during greater than 1.1ps (near the data transfer rate of 1Tb/s), magnetostatic wave approaches the situation of continuous guided wave incident substantially to the peak value diffraction efficiency of light pulse continuously, and the output optical pulse shape remains unchanged substantially.That is to say that under normal conditions, magnetostatic wave can be by the continuous light approximate processing to the diffraction of guided wave pulse.When other condition was constant, diffraction efficiency was only relevant with the drive current of microstrip line transformation device.
The present invention utilizes the Bragg diffraction effect of microwave magneto optical modulator to produce the light grouping, light signal is under the Bragg of microwave magneto optical modulator 14 diffraction, be divided into not diffraction light and diffraction light, both wavelength are slightly different, and they correspond respectively to the light payload and cursor is signed.The relative power ratio that the routing iinformation of label is signed with light payload and cursor represents that it has relation one to one with the Bragg diffraction efficiency of microwave magneto optical modulator 14, can be by the drive current change of accent microwave magneto optical modulator 14.Because it is different with the wavelength of light payload that cursor is signed, can both be separated by the transmission and the reflection of following MOG-FP filter 22.
Light payload and cursor are signed separation module 2 and are comprised optical circulator 21, magneto-optic grating-enamel amber (MOG-FP) filter 22, beam splitter 23 compositions, a part of transmission part of dividing into groups the light that MOG-FP filter 22 will be imported reflects, thereby realizes separating of cursor label and light payload; Optical circulator 21 will be outputed to beam splitter 23 to port 3 by the optical signals port 2 of MOG-FP filter 22 reflections after its port one receives the light grouping, the light signal of transmission directly is input to the MOG-FP filter from its port 2; Beam splitter 23 will be imported light and be divided into two bundles, and wherein the decay of the port one of beam splitter 23 is same with the decling phase that passes through MOG-FP filter 22, and port 2 links to each other with optical switch matrix 41 and exports the light payload.
The MOG-FP filter of indication of the present invention is by two magneto-optic gratings (magneto-optical Grating, MOG) Fabry-Perot of Xing Chenging (Fabry-P é rot, FP) chamber.The MOG-FP filter is a kind of optical grating construction with magneto optical effect, can pass through at traditional F BG (Fiber Bragg Grating, Fiber Bragg Grating FBG) mixes elements such as cerium, bismuth in and strengthen magneto-optical property or on the yttrium iron garnet optical fiber that draws, write method such as grating and obtain, also can adopt alternate manners such as magneto-optic multilayer film or the sub-crystal structure of one dimension magneto-optic to realize.The MOG-FP filter is arranged in solenoid, and the field controller that is connected with solenoid changes the magnetic field that solenoid produced by the size of control input current, thereby realizes the adjustable filtering of magnetic of MOG-FP filter.
Can show single-pass or comb filtering characteristic in the reflection bandwidth of the transmission spectrum of MOG-FP filter according to the long MOG that do not coexist in FP chamber, therefore it can be used for extracting the cursor label of single channel as band pass filter, can be used for separating of multichannel cursor label and light payload as comb filter again.The principle of MOG-FP filter separated light label and light payload and FBG (Fiber Bragg Grating, Fiber Bragg Grating FBG) similar, cursor is signed or the light payload is aimed at the transmission peaks of MOG-FP filter, thereby can see through the MOG-FP filter, and another is then reflected by the MOG-FP filter.And under the effect of magneto optical effect, the variation of externally-applied magnetic field can make the transmission spectrum of the left and right sides rounding polarised light of propagating among the MOG-FP be moved.Utilize this special construction of MOG-FP filter and intrinsic characteristic, can realize the function of the adjustable filtering of magnetic, so the MOG-FP filter is applicable to wavelength division multiplexed network.
Label processing module comprises two photodetectors 31 and photodetector 32 and luminous power comparator 33, photodetector 31 and photodetector 32 respectively the cursor of input are signed and the luminous power of light payload is converted into the signal of telecommunication, and the output of photodetector 31 and photodetector 32 links to each other with luminous power comparator 33; Luminous power comparator 33 calculates cursor by computing circuit and signs luminous power ratio with the light payload, and this luminous power ratio can be represented routing iinformation, and the output of luminous power comparator 33 links to each other with route control unit 42.The light payload is divided into two-way by beam splitter 23, and one the tunnel enters following label processing module 3 carries out power ratio with the cursor label, extracts exchanging routing information and also sends into route control unit 42 generation route control signals; Another road by following optical switch matrix 41 back with sign (by luminous power than value representation) by the label generation module 43 new cursors that produce and form new light and divide into groups.
The present invention utilizes the Bragg diffraction effect of microwave magneto optical modulator to produce the light grouping, the luminous power relative size that the routing iinformation that cursor is signed is signed with light payload and cursor (being the relative power ratio) expression.The light payload is under the Bragg of magneto optical modulator diffraction, be divided into not diffraction light and diffraction light, both wavelength are slightly different, they correspond respectively to the light payload and cursor is signed, it with the Bragg diffraction efficiency of aforesaid microwave magneto optical modulator 14 have corresponding one by one, can be by adjusting the drive current change of magneto optical modulator.
Optical switch module comprises optical switch matrix 41, route control unit 42, cursor label generation unit 43, route control unit 42 port ones link to each other with optical switch matrix 41, and route control unit 42 obtains the output of route control signal with 41 pairs of light payloads of control optical switch matrix by luminous power comparator 33; The input that cursor is signed generation unit 43 links to each other with the output of optical switch matrix 41, and another input links to each other with the port 2 of route control unit 42, to obtain the routing iinformation of next node, forms new light grouping.
Corresponding to above-mentioned optical packet switching system based on the Bragg diffraction principle, the present invention also provides the light grouping exchange method based on the Bragg diffraction principle, and its step is as follows:
(1) at light grouping generation module 1, the data that need to transmit are loaded into the light territory by light intensity modulator 12, and routing iinformation then is loaded into the light territory by microwave magneto optical modulator 14, thereby form the light grouping;
In this step, the continuous light that sends from laser 11 can be modulated to the flashlight that is loaded with the transmission data through behind the light intensity modulator 12.Routing iinformation changes diffraction efficiency, thereby is loaded into the light territory, and produce the light grouping by the drive current input microwave magneto optical modulator 14 of microstrip line transformation device.
(2) sign separation module 2 at light payload and cursor, MOG-FP filter 22 is signed and transmission and the reflection respectively of light payload cursor, and the cursor of realization light grouping is signed and separated with the light payload;
In this step, can make the transmission peaks of MOG-FP filter 22 become very thin, be convenient to accurately separated light grouping by the MOG reflectivity that improves.The cursor label in the transmission peaks of MOG-FP filter 22 and the light grouping or the wavelength alignment of light payload in case of necessity can be adjusted by externally-applied magnetic field, make the effect of separation reach best.
(3) in label processing module 3, cursor label and light payload are carried out power ratio, obtain the routing iinformation of luminous power than value representation, route control unit 42 in the following optical switch module 4 produces the route control signal according to this routing iinformation optical switch matrix 41 is carried out proper configuration, make the light payload exchange to output port corresponding in the optical switch matrix 41 with routing iinformation, this is because optical switch matrix has a plurality of inputs, output port, can controllably be connected to arbitrary output port to the fiber-optic signal of arbitrary input port, thereby realize the Route Selection of light payload; In this step, light signal becomes the signal of telecommunication through opto-electronic conversion, draws its power ratio, i.e. routing iinformation by computing circuit then.The optical switch matrix 41 of optical switch module 4 makes the light payload from correct port output by routing iinformation.
(4) at optical switch module 4, the routing iinformation of next node is signed generation unit 43 by cursor and is loaded into the light territory, forms new light grouping with the light payload of optical switch matrix 41 outputs, then from optical switch module 4 outputs.
Circulation repeats above-mentioned steps, just constantly forms new light grouping and continues to transmit to next node.
The present invention is described further below in conjunction with specific embodiment.
Operation wavelength λ=the 1552.52nm of the laser 11 of light grouping generation module 1, the pseudo-random data speed of Gauss's sign indicating number type is 10Gb/s.Fig. 3, Fig. 4 represent the time-domain diagram and the frequency domain figure of the light signal that laser 11 produces respectively.The grouping of diffraction generation light takes place through microwave magneto optical modulator 14 in light signal subsequently, and magnetostatic wave frequency is 10GHz, so the diffraction light wavelength is 1552.44nm.Fig. 5 represents the light grouping spectrogram through 14 outputs of microwave magneto optical modulator, and wherein the strength of carrier of cursor label is than the low 5dBm of light payload.The light grouping enters network node and carries out the processing of cursor label after the 50km Optical Fiber Transmission.
MOG-FP filter 22 centre wavelengths are that 1552.4nm, bandwidth are 10GHz.After MOG-FP filter 22 was incided in the light grouping, cursor was signed transmissive, and the light payload then reflects, and isolated cursor is signed frequency domain figure as shown in Figure 6, and isolated smooth payload frequency domain figure as shown in Figure 7.The light payload that is reflected is divided into two-way by behind the optical circulator 21 by beam splitter 23, appropriately designs splitting ratio and can make the decay of one road light payload signal wherein same through the decling phase of MOG-FP filter 22 with label; This road light payload and cursor are signed and are converted into the signal of telecommunication by photodiode 31,32, and the size by more corresponding electric current rules out the label routing iinformation and sends into route control unit 42 and produce the route control signals, and then controls optical switch matrix 41.After another road light payload is exported through optical switch matrix 41, sign the new light grouping of composition, continue to transmit with new cursor.Fig. 8 and Fig. 4 comparison shows that, the influence that this scheme can't be very big to waveform generation, and therefore relative and other label form, this scheme does not need to introduce extra shaping process.
Optical switch matrix 41 with three ports is an example, the care label processing procedure.Table 1 has provided the drive current I that sets three kinds of microwave magneto optical modulators 14 respectively
0The time, the label value of the diffraction efficiency of their correspondences, transmission and extraction (simulation result), and corresponding optical switch matrix 41 port numberings, wherein " label value " is meant the result who is measured by label processing module, it is corresponding to the power ratio of light payload and cursor label.
The corresponding relation of table 1 drive current and label value
Those of ordinary skill in the art will appreciate that embodiment described here is in order to help reader understanding's principle of the present invention, should to be understood that protection scope of the present invention is not limited to such special statement and embodiment.Those of ordinary skill in the art can make various other various concrete distortion and combinations that do not break away from essence of the present invention according to these technology enlightenments disclosed by the invention, and these distortion and combination are still in protection scope of the present invention.
Claims (6)
1. based on the optical packet switching system of Bragg diffraction principle, comprise light grouping generation module, light payload and cursor label separation module, label processing module and optical switch module, it is characterized in that, the light grouping that light grouping generation module produces is signed separation module by laggard light inlet payload of optical fiber and cursor and is separated into two-way light payload and one road cursor label, output route control signal was to optical switch module after cursor label and one road light payload entered label processing module, and another road light payload directly enters optical switch module and exports according to the route control signal.
2. the optical packet switching system based on the Bragg diffraction principle according to claim 1, it is characterized in that, above-mentioned light grouping generation module comprises laser, light intensity modulator, data message terminal and microwave magneto optical modulator, wherein laser is introduced the microwave magneto optical modulator with light behind light intensity modulator; The data message terminal has two ports, links to each other data that output will transmit and pairing routing iinformation respectively with the microwave magneto optical modulator with light intensity modulator.
3. the optical packet switching system based on the Bragg diffraction principle according to claim 1, it is characterized in that, light payload and cursor are signed separation module and are comprised optical circulator, magneto-optic grating-enamel amber (MOG-FP) filter, beam splitter, a part of transmission part of dividing into groups the light that the MOG-FP filter will be imported reflects, thereby realizes separating of cursor label and light payload; Optical circulator will be outputed to beam splitter by optical signals port to the port that the MOG-FP filter reflects after its port receives the light grouping, the light signal of transmission directly is input to the MOG-FP filter from its port; Beam splitter will be imported light and be divided into two bundles, and wherein the decay of the port of beam splitter is same with the decling phase that passes through the MOG-FP filter, and port links to each other with optical switch matrix and exports the light payload.
4. the optical packet switching system based on the Bragg diffraction principle according to claim 1, it is characterized in that, above-mentioned label processing module comprises two photodetectors and photodetector and luminous power comparator, photodetector and photodetector respectively the cursor of input are signed and the luminous power of light payload is converted into the signal of telecommunication, and the output of photodetector and photodetector links to each other with the luminous power comparator; The luminous power comparator calculates cursor by computing circuit and signs luminous power ratio with the light payload, and this luminous power ratio can be represented routing iinformation, and the output of luminous power comparator links to each other with route control unit; The light payload is divided into two-way by beam splitter, and one the tunnel enters following label processing module and cursor signs and carry out power ratio, extracts exchanging routing information and also sends into route control unit and produce the route control signal; Another road is by forming new light grouping behind the following optical switch matrix with by the new cursor label that produce of label generation module.
5. the optical packet switching system based on the Bragg diffraction principle according to claim 1, it is characterized in that, above-mentioned optical switch module comprises optical switch matrix, route control unit, cursor label generation unit, the route control unit port links to each other with optical switch matrix, and route control unit is obtained the route control information with the output of control optical switch matrix to the light payload from the luminous power comparator; The input that cursor is signed generation unit links to each other with the output of optical switch matrix, and another input links to each other with the port of route control unit, to obtain the routing iinformation of next node, forms new light grouping.
6. based on the optical packet switching system of Bragg diffraction principle, comprise step:
(1) at light grouping generation module, the data that need to transmit are loaded into the light territory by light intensity modulator, and routing iinformation then is loaded into the light territory by the microwave magneto optical modulator, thereby form the light grouping;
(2) sign separation module at light payload and cursor, magneto-optic grating-enamel amber (MOG-FP) filter is signed and transmission and the reflection respectively of light payload cursor, and the cursor of realization light grouping is signed and separated with the light payload;
(3) in label processing module, cursor label and light payload are carried out power ratio, obtain the routing iinformation of luminous power than value representation, route control unit in the following optical switch module produces the route control signal according to this routing iinformation, and optical switch matrix carried out proper configuration, make the light payload exchange to output port corresponding with routing iinformation in the optical switch matrix, the optical switch matrix of optical switch module makes the light payload from correct port output by routing iinformation;
(4) at optical switch module, the routing iinformation of next node is signed generation unit by cursor and is loaded into the light territory, forms new light grouping with the light payload of optical switch matrix output, exports from optical switch module then;
Circulation repeats above-mentioned steps, just constantly forms new light grouping and continues to transmit to next node.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010557664 CN101977336B (en) | 2010-11-24 | 2010-11-24 | Bragg diffraction principle-based optical packet switching system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010557664 CN101977336B (en) | 2010-11-24 | 2010-11-24 | Bragg diffraction principle-based optical packet switching system and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101977336A true CN101977336A (en) | 2011-02-16 |
| CN101977336B CN101977336B (en) | 2013-02-13 |
Family
ID=43577177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010557664 Expired - Fee Related CN101977336B (en) | 2010-11-24 | 2010-11-24 | Bragg diffraction principle-based optical packet switching system and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101977336B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104613987A (en) * | 2015-02-06 | 2015-05-13 | 哈尔滨工业大学 | FFP-TF based central wavelength stabilizing device and method |
| CN106464412A (en) * | 2014-06-03 | 2017-02-22 | 华为技术有限公司 | Optical packet sending method and device, processing method and optical switching device |
| CN106500834A (en) * | 2016-10-28 | 2017-03-15 | 何桂崧 | A kind of light power meter test system |
| CN112291016A (en) * | 2020-10-30 | 2021-01-29 | 台州科技职业学院 | Method for realizing label signal modulation by pseudo-orthogonal line coding under non-orthogonal modulation |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0334054A2 (en) * | 1988-02-29 | 1989-09-27 | CSELT Centro Studi e Laboratori Telecomunicazioni S.p.A. | Node for a fast packet-switching network in optical-electrical technology |
| CN101188534A (en) * | 2007-12-11 | 2008-05-28 | 中兴通讯股份有限公司 | A device and method for realizing signaling communication network and network communication network channel |
-
2010
- 2010-11-24 CN CN 201010557664 patent/CN101977336B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0334054A2 (en) * | 1988-02-29 | 1989-09-27 | CSELT Centro Studi e Laboratori Telecomunicazioni S.p.A. | Node for a fast packet-switching network in optical-electrical technology |
| CN101188534A (en) * | 2007-12-11 | 2008-05-28 | 中兴通讯股份有限公司 | A device and method for realizing signaling communication network and network communication network channel |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106464412A (en) * | 2014-06-03 | 2017-02-22 | 华为技术有限公司 | Optical packet sending method and device, processing method and optical switching device |
| CN106464412B (en) * | 2014-06-03 | 2018-11-13 | 华为技术有限公司 | Sending method, equipment, processing method and the optical switching device of light packet |
| US10149025B2 (en) | 2014-06-03 | 2018-12-04 | Huawei Technologies Co., Ltd. | Optical packet sending method and device, optical packet processing method, and optical switching device |
| CN104613987A (en) * | 2015-02-06 | 2015-05-13 | 哈尔滨工业大学 | FFP-TF based central wavelength stabilizing device and method |
| CN104613987B (en) * | 2015-02-06 | 2016-10-12 | 哈尔滨工业大学 | A kind of sufficient center wavelength accuracy apparatus and method based on FFP-TF |
| CN106500834A (en) * | 2016-10-28 | 2017-03-15 | 何桂崧 | A kind of light power meter test system |
| CN112291016A (en) * | 2020-10-30 | 2021-01-29 | 台州科技职业学院 | Method for realizing label signal modulation by pseudo-orthogonal line coding under non-orthogonal modulation |
| CN112291016B (en) * | 2020-10-30 | 2021-09-17 | 台州科技职业学院 | Method for realizing label signal modulation by pseudo-orthogonal line coding under non-orthogonal modulation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101977336B (en) | 2013-02-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102461020A (en) | Method and device for transmitting optical information between an emitter station and receiving station via a multi-mode optical wave guide | |
| CN103354625B (en) | The passive light network transmission system of the stacking wavelength-division and time-division multiplexing based on OFDM | |
| CN101977336B (en) | Bragg diffraction principle-based optical packet switching system and method | |
| CN103091782B (en) | Array waveguide grating module with polarization control | |
| CN108880695B (en) | Photon continuous time compression device and method thereof | |
| CN102545007A (en) | Tunable laser and method for locking and monitoring wavelength of tunable laser | |
| CN110501783B (en) | Few-mode fiber beam forming system | |
| CN102158772B (en) | System and method for being compatible to broadcasting service in colorless wavelength division multiplexing passive optical network | |
| US7983561B2 (en) | Optical pulse time spreading device | |
| TWI514793B (en) | Optical transmitter with multi-channel and method of transmitting light | |
| CN104317000A (en) | Modular, extendable wavelength and space all-optical router | |
| CN110989102A (en) | Silicon-based WDM optical transmission device based on VCSEL array hybrid integration and optical fiber vertical packaging | |
| CN204203497U (en) | A kind of wavelength of modular extendable and space All-optical routing device | |
| US7034988B2 (en) | Wavelength conversion device | |
| CN102841479A (en) | All-optical wavelength conversion integrated chip based on transient chirp jump | |
| CN103220063A (en) | All-optical wavelength routing integrated chip | |
| CN104297853A (en) | Modularized wavelength and space all-optical router | |
| CN201035286Y (en) | non-clear code toclear code complete light code type converting device | |
| CN103576222B (en) | CS-RZ to NRZ pattern upconversion fiber grating design method and device thereof | |
| CN204270002U (en) | A kind of N of modular extendable 2× N 2wavelength and space All-optical routing device | |
| CN104486028B (en) | The system and method for wavelength-division multiplex soft exchange net low cost LAN service transmission | |
| CN104144017B (en) | The optical packet signal production method of a kind of multi-wavelength passage | |
| CN104422989B (en) | Optical assembly, Optical isolator module and light emission system | |
| CN103875203A (en) | Transmitter and method for optical transmission | |
| CN203069822U (en) | Low-cost wavelength division multiplexer for WDM-PON |
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130213 Termination date: 20151124 |
|
| EXPY | Termination of patent right or utility model |