CN103222208B - A kind of transmitter, optical signal generation method, Apparatus and system - Google Patents
A kind of transmitter, optical signal generation method, Apparatus and system Download PDFInfo
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- CN103222208B CN103222208B CN201280002128.0A CN201280002128A CN103222208B CN 103222208 B CN103222208 B CN 103222208B CN 201280002128 A CN201280002128 A CN 201280002128A CN 103222208 B CN103222208 B CN 103222208B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/06—Polarisation multiplex systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/50—Transmitters
- H04B10/516—Details of coding or modulation
- H04B10/532—Polarisation modulation
Abstract
A kind of transmitter, optical signal generation method, Apparatus and system, relate to optical communication field, reduce use cost, simplified apparatus structure, reduces pressure for upgrading, thus improve the experience of operator and user.Its method is: the first polarization laser obtained according to the first data-signal, and the first polarization laser is divided into the second polarization laser and the 3rd polarization laser; According to the anglec of rotation preset, the 3rd polarization laser is rotated to the second polarization direction; By the first data-signal erasing in the 3rd polarization laser, and by the second data signal modulation in the 3rd polarization laser, obtain the 4th polarization laser; Rotate the 4th polarization laser to the 3rd polarization direction according to the anglec of rotation preset, the 3rd polarization direction is vertical with the first polarization direction; Second polarization laser and the 4th polarization laser with the 3rd polarization direction are merged into palarization multiplexing light signal.The embodiment of the present invention is for generation of palarization multiplexing light signal.
Description
Technical field
The present invention relates to the communications field, particularly relate to a kind of transmitter, optical signal generation method, Apparatus and system.
Background technology
The technical scheme of what current broadband access field mainly adopted is EPON, when the bandwidth upgrading of EPON, can make corresponding electric device upgrade cost significantly rise.Current, the method improving EPON transmission rate mainly comprises: high order modulation technique and polarisation of light multiplex technique, wherein, high order modulation technique is mainly by compressed signal bandwidth, and transmission data are mainly loaded into two perpendicular polarisation state of light by polarisation of light multiplex technique respectively.
In existing a kind of polarisation of light multiplex technique, first by two-way independently electrical data signal number be loaded on light wave by light external modulator, again by after polarized orthogonal process, it is identical that two paths of data light wave forms wavelength, the two-way light data of polarization orthogonal, obtain the good light signal of quality finally by polarized composite wave device.
At existing another kind of polarisation of light multiplex technique, first two-way independently data are produced respectively by two programmable gate arrays, then this two paths of data is changed into analog signal respectively, and two paths of data is loaded in the vertical polarization state of two polarization states through light external modulator.
But, for above-mentioned two kinds of prior aries, because equipment limit, the external modulator used up must be made when different data-signals being loaded into the vertical polarization face of light wave, because the cost taken by themselves of this external modulator is high, complex structure, and then cause adopting the cost of the passive optical network of this laser high, complex structure, pressure for upgrading is large, poor user experience.
Summary of the invention
Embodiments of the invention provide a kind of transmitter, optical signal generation method, Apparatus and system, can by the mode of directly modulation distributed feedback laser by different Data import on two perpendicular polarisation state of laser, reduce use cost, simplified apparatus structure, reduce pressure for upgrading, thus improve Consumer's Experience.
For achieving the above object, embodiments of the invention adopt following technical scheme:
First aspect, provides a kind of transmitter, comprising:
Laser, for modulating according to the first data-signal, obtains initial polarization laser;
Polarization Controller, for described initial polarization laser is carried out Polarization Control, obtains first polarization laser with the first polarization direction;
Spectroscope, for described first polarization laser is divided into the second polarization laser and the 3rd polarization laser, frequency and the wavelength of described first polarization laser, the second polarization laser and the 3rd polarization laser are identical;
Circulator or revolving mirror, for being rotated the polarization direction of the 3rd polarization laser to the second polarization direction by described first polarization direction according to the anglec of rotation preset;
Image intensifer or laser diode, the first data-signal erasing in 3rd polarization laser of the second polarization direction will be had, and the second data signal modulation is had in the 3rd polarization laser of the second polarization direction described, obtain the 4th polarization laser with the second polarization direction;
Described circulator or revolving mirror, also for being rotated to the 3rd polarization direction by described second polarization direction the polarization direction of described 4th polarization laser according to the described default anglec of rotation, described 3rd polarization direction is vertical with described first polarization direction;
Polarization beam apparatus, for described second polarization laser and the 4th polarization laser with the 3rd polarization direction are merged into palarization multiplexing light signal, and sends described palarization multiplexing light signal.
In the implementation that the second is possible, in conjunction with first aspect, described transmitter also comprises:
Circulator, transmits along single direction for controlling polarization laser, and described polarization laser is entered from a port of described circulator, spreads out of from the next port of described circulator according to the direction order determined by quiet bias field.
Second aspect, provides a kind of optical signal generation method, and described method comprises:
First polarization laser with the first polarization direction is obtained according to the first data-signal, and described first polarization laser is divided into the second polarization laser and the 3rd polarization laser, frequency and the wavelength of described first polarization laser, the second polarization laser and the 3rd polarization laser are identical;
According to the anglec of rotation preset, the polarization direction of the 3rd polarization laser is rotated to the second polarization direction by described first polarization direction;
To the first data-signal erasing in the 3rd polarization laser of described second polarization direction be had, and by the second data signal modulation in the 3rd polarization laser with described second polarization direction, obtain the 4th polarization laser with described second polarization direction;
Rotated to the 3rd polarization direction by described second polarization direction the polarization direction of described 4th polarization laser according to the described default anglec of rotation, described 3rd polarization direction is vertical with described first polarization direction;
Described second polarization laser and the 4th polarization laser with described 3rd polarization direction are merged into palarization multiplexing light signal.
In the implementation that the first is possible, in conjunction with second aspect, describedly obtain first polarization laser with the first polarization direction according to the first data-signal and comprise:
Modulate according to described first data-signal, obtain initial polarization laser;
Described initial polarization laser is carried out Polarization Control, there is described in obtaining the first polarization laser of the first polarization direction.
The third aspect, provides a kind of optical line terminal, and described optical line terminal comprises:
Described transmitter;
First issues data module, for being sent to by the first data-signal in the laser of described transmitter;
Second issues data module, in image intensifer that the second data-signal is sent to described transmitter or laser diode;
Wherein, described first data-signal and the second data-signal are separate two paths of data.
Fourth aspect, provides a kind of optical network unit, and described optical network unit comprises:
Transmitter described in first aspect.
5th aspect, a kind of optical network system is provided, described optical network system at least comprises: optical line terminal and multiple optical network unit, and described optical line terminal comprises transmitter as described in relation to the first aspect, and/or described optical network unit comprises transmitter as described in relation to the first aspect.
The embodiment of the present invention provides a kind of transmitter, optical signal generation method, Apparatus and system, after passing through Polarization Controller by the polarization laser that will produce, generate the polarization laser with particular polarization, after spectroscope, generate the polarization laser that two-way is identical, wherein a road exports polarization beam apparatus to, circulator of separately leading up to enters reflective semiconductor optical amplifier after Faraday rotator, enter polarization beam apparatus through Faraday rotator from circulator after modulation, synthesize final palarization multiplexing light signal with another road polarization laser.Reduce use cost, simplified apparatus structure, reduce pressure for upgrading, thus improve the experience of operator and user.
Accompanying drawing explanation
The schematic diagram of a kind of transmitter that Fig. 1 provides for the embodiment of the present invention;
The polarization laser that Fig. 2 provides for the embodiment of the present invention is at the schematic diagram of change of polarization before and after circulator;
The situation of change schematic diagram of the Wave data loaded in the polarization laser entering before and after image intensifer that Fig. 3 provides for the embodiment of the present invention;
Fig. 4 provides the polarization laser schematic diagram of change of polarization before and after circulator again for the embodiment of the present invention;
The structural representation of a kind of transmitter that Fig. 5 provides for the embodiment of the present invention;
The schematic flow sheet of a kind of optical signal generation method that Fig. 6 provides for the embodiment of the present invention;
The structural representation of a kind of optical line terminal that Fig. 7 provides for the embodiment of the present invention;
The structural representation of a kind of optical network system that Fig. 8 provides for the embodiment of the present invention;
The structural representation of the another kind of optical network system that Fig. 9 provides for the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The embodiment of the present invention provides a kind of transmitter 1, as shown in Figure 1, comprising:
Laser 11, for modulating according to the first data-signal, obtains initial polarization laser, and by initial polarization laser transmission to Polarization Controller 12;
Polarization Controller 12, for receiving initial polarization laser from distributed feedback laser 11, initial polarization laser is carried out Polarization Control, obtains first polarization laser with the first polarization direction, and first polarization laser with the first polarization direction is transferred to spectroscope 13;
Spectroscope 13, for receiving first polarization laser with the first polarization direction from Polarization Controller 12, first polarization laser is divided into the second polarization laser and the 3rd polarization laser, frequency and the wavelength of the first polarization laser, the second polarization laser and the 3rd polarization laser are identical, and the second polarization laser is transferred to polarization beam apparatus, the 3rd polarization laser is transferred to circulator or revolving mirror 14;
Circulator or revolving mirror 14, for receiving the 3rd polarization laser, according to the anglec of rotation preset, the polarization direction of the 3rd polarization laser is rotated to the second polarization direction by the first polarization direction, and the 3rd polarization laser after change of polarized direction is sent to image intensifer or laser diode 15;
Image intensifer or laser diode 15, the 3rd polarization laser after change of polarized direction is received from circulator or revolving mirror 14, the first data-signal erasing in 3rd polarization laser of the second polarization direction will be had, and by the second data signal modulation in the 3rd polarization laser with the second polarization direction, obtain the 4th polarization laser with the second polarization direction, and the 4th polarization laser with the second polarization direction is sent to circulator or revolving mirror 14;
Circulator or revolving mirror 14, also for receiving the 4th polarization laser with the second polarization direction, according to the anglec of rotation preset, the polarization direction of the 4th polarization laser is rotated to the 3rd polarization direction by the second polarization direction, 3rd polarization direction is vertical with the first polarization direction, and the 4th polarization laser with the 3rd polarization direction is sent to polarization beam apparatus 16;
Polarization beam apparatus 16, for receiving the second polarization laser and the 4th polarization laser with the 3rd polarization direction, merges into palarization multiplexing light signal by the second polarization laser and the 4th polarization laser with the 3rd polarization direction.
Wherein, as shown in Figure 1, concrete connected mode between each device can be: the input of laser 11 is for inputting the first digital signal, the output of laser 11 connects the input of Polarization Controller 12, the output of Polarization Controller 12 connects spectroscopical input, the output of spectroscope 13 connects the first input end of polarization beam apparatus 16 and the first input end of circulator or revolving mirror 14 respectively, first output of circulator or revolving mirror 14 connects the first input end of image intensifer or laser diode 15, second input of image intensifer or laser diode 15 is for inputting the second digital signal, the output connecting rotator of image intensifer or laser diode 15 or revolving mirror 14 second input, circulator or revolving mirror 14 second output connect the second input of polarization beam apparatus 16.
Exemplary, the specific implementation that transmitter 1 produces palarization multiplexing light signal can be:
Suppose there is two-way independently digital signal, wherein the first digital signal is X.PolData, and the second digital signal is Y.PolData.
First X.PolData is inputted distributed feedback laser 11, by laser 11 directly modulation, export the initial polarization laser with X.PolData, be designated as laser X.PolData.Because this laser X.PolData may have multiple polarization direction, therefore laser X.PolData is input in Polarization Controller 12, after Polarization Controller 12, obtain the laser X.PolData with single polarization direction, suppose that this single polarization direction is the first polarization direction.
Then, to there is the laser X.PolData of the first polarization direction by spectroscope 13, obtain the identical two-way polarization laser with laser X.PolData, be designated as laser X.PolDataA and laser X.PolDataB respectively, wherein laser X.PolDataA is input to polarization beam apparatus 16 medium to be synthesized, laser X.PolDataB is input in circulator or revolving mirror 14.
For circulator, this circulator can change the polarization state of polarization laser by externally-applied magnetic field, suppose that the anglec of rotation preset is 45 degree, after then laser X.PolDataB being input to circulator, the polarization direction of laser X.PolDataB can rotate 45 degree in certain direction, obtain the laser X.PolDataB with the second polarization direction, this process as shown in Figure 2:
Wherein, the not polarization direction being in the same time polarization laser of 1. 2. indication in Fig. 2:
What 1. indicate is polarization direction before polarization laser does not enter Faraday rotator;
What 2. indicate is polarization laser in first time through the polarization direction of Faraday rotator post deflection 45 degree.
Then, then by the laser X.PolDataB with the second polarization direction image intensifer or laser diode 15 is input to.
For semiconductor optical amplifier, the gain of image intensifer is relevant with injected optical power, when injected optical power is greater than certain value, image intensifer will enter saturation condition, the gain entering saturation condition is very little, utilize this characteristic can carry out shaping to the upper Wave data loaded of broadcast, the bit " 1 " that wherein power is high can not effectively be amplified, and the bit that power is low " 0 " obtains the amplification of larger multiple.Therefore, after the image intensifer being in saturation condition, the light signal with digital signal of injection will become direct current and export light, is namely equivalent to wipe with the digital signal in the light signal of digital signal.
Image intensifer is usual and inject light respectively in local side and terminal, between be connected by very long optical fiber, cause the decay of injecting light serious, be difficult to the saturation conditions meeting image intensifer, compared with prior art, image intensifer and laser are all arranged in the palarization multiplexing optical signal transmitter 1 that the present embodiment provides, inject light and almost there is no power attenuation, the saturation conditions of image intensifer can be met, substantially increase the erasing ability to the digital signal injected on light, best erasing effect can be reached.
Therefore, when laser X.PolDataB enter image intensifer after, can by the data X.PolData erasing in laser X.PolDataB, make laser X.PolDataB become direct current light signal that a road does not have data, as shown in Figure 3:
Wherein, what 1. 2. represent is the situation of change entering the Wave data loaded in the polarization laser before and after image intensifer.
1. represent before entering amplifier, the Wave data loaded in polarization laser;
2. represent that after entering amplifier, the Wave data loaded in polarization laser is exported by the direct current light that semiconductor amplifier is shaped as high level, namely reaches the effect of data erase.
Then, Y.PolData is inputted image intensifer or laser diode 15, in image intensifer or laser diode 15, direct current light signal is modulated, export the initial polarization laser with Y.PolData, be designated as laser Y.PolData, and laser Y.PolData is input in circulator or revolving mirror 14.
For circulator, suppose that the anglec of rotation preset is 45 degree, after then laser Y.PolData being input to circulator, the polarization direction of laser Y.PolData can continue rotation 45 degree in certain direction, obtain the laser Y.PolData with the 3rd polarization direction, then the 3rd polarization direction of laser Y.PolData is vertical with the first polarization direction.Thus make the polarization direction of laser X.PolDataA and laser Y.PolData orthogonal, this process as shown in Figure 4:
Wherein: what 1. indicate is polarization direction before polarization laser does not enter Faraday rotator;
What 2. indicate is polarization laser in first time through the polarization direction of Faraday rotator post deflection 45 degree;
What 3. indicate is the polarization direction that polarization laser second time continues deflection 45 degree after Faraday rotator.
Finally, will have in the 3rd polarization direction polarization laser Y.PolData input polarization controller 12, and and there is the first polarization direction laser X.PolDataA synthesize multiplexing polarized light signal.
Concrete, transmitter 1 can also comprise:
Circulator 17, after entering, spreads out of from the next port of circulator, to control the transmission direction of polarization laser according to the direction order determined by quiet bias field for making polarization laser from a port of circulator.
As shown in Figure 5, adding the annexation after circulator 17 is: the input of laser 11 is for inputting the first digital signal, the output of laser 11 connects the input of Polarization Controller 12, the output of Polarization Controller 12 connects the input of spectroscope 13, the output of spectroscope 13 connects the first input end of polarization beam apparatus 16 and the first input end of circulator or revolving mirror 14 respectively, first output of circulator or revolving mirror 14 connects the first input end of image intensifer or Fabry Perot chamber laser diode 15, second input of image intensifer or laser diode 15 is for inputting the second digital signal, the output connecting rotator of image intensifer or laser diode 15 or revolving mirror 14 second input, circulator or revolving mirror 14 second output connect the second input of polarization beam apparatus 16.
Wherein, above-mentioned laser is the laser with modulation function, can be such as distributed feedback (DistributedFeedBack, DFB) laser, this distributed feedback laser has modulation function, external modulator need not be used, and then the cost solving fibre system employing external modulator and cause is high, baroque problem; Circulator can be Faraday rotator (FaradayRotator, FR), and revolving mirror can be faraday rotation mirror (FaradayRotationMirror, FRM); Image intensifer can be emission-type semiconductor optical amplifier (ReflectiveSemiconductorOpticalAmplifier, RSOA), laser diode can be Fabry Perot chamber laser diode (Fabry-PerotLaserDiode, FPLD).
The embodiment of the present invention provides a kind of transmitter, after passing through Polarization Controller by the polarization laser that will produce, generate the polarization laser with particular polarization, after spectroscope, generate the identical polarization laser of two-way, wherein a road exports polarization beam apparatus to, separately lead up to circulator through circulator laggard enter image intensifer, enter polarization beam apparatus through circulator from circulator after modulation, synthesize final palarization multiplexing light signal with another road polarization laser.Reduce use cost, simplified apparatus structure, reduce pressure for upgrading, thus improve the experience of operator and user.
The embodiment of the present invention provides a kind of optical signal generation method, and as shown in Figure 6, the method comprises;
S601, transmitter are according to the first data-signal, obtain first polarization laser with the first polarization direction, and the first polarization laser being divided into the second polarization laser and the 3rd polarization laser, frequency and the wavelength of the first polarization laser, the second polarization laser and the 3rd polarization laser are identical.
Wherein, concrete implementation can comprise the following steps:
S6011, transmitter first data-signal are modulated, and obtain initial polarization laser;
Initial polarization laser is carried out Polarization Control by S6012, transmitter, obtains first polarization laser with the first polarization direction.
The polarization direction of the 3rd polarization laser is rotated to the second polarization direction by the first polarization direction according to the anglec of rotation preset by S602, transmitter;
S603, transmitter will have the first data-signal erasing in the 3rd polarization laser of the second polarization direction, and by the second data signal modulation in the 3rd polarization laser with the second polarization direction, obtain the 4th polarization laser with the second polarization direction;
The polarization direction of the 4th polarization laser is rotated to the 3rd polarization direction by the second polarization direction according to the anglec of rotation preset by S604, transmitter, and the 3rd polarization direction is vertical with the first polarization direction;
Second polarization laser and the 4th polarization laser with the 3rd polarization direction are merged into palarization multiplexing light signal by S605, transmitter, and send palarization multiplexing light signal.
The embodiment of the present invention provides a kind of optical signal generation method, after passing through Polarization Controller by the polarization laser that will produce, generate the polarization laser with particular polarization, after spectroscope, generate the identical polarization laser of two-way, wherein a road exports polarization beam apparatus to, separately lead up to circulator through circulator laggard enter image intensifer, enter polarization beam apparatus through circulator from circulator after modulation, synthesize final palarization multiplexing light signal with another road polarization laser.Reduce use cost, simplified apparatus structure, reduce pressure for upgrading, thus improve the experience of operator and user.
Another embodiment of the present invention provides a kind of optical line terminal 2, as shown in Figure 7, comprising:
The transmitter 1 that previous embodiment provides;
First issues data module 21, for being sent in the laser of transmitter by the first data-signal;
Second issues data module 22, in image intensifer that the second data-signal is sent to transmitter or laser diode;
Wherein, the first data-signal and the second data-signal are separate two paths of data.
The embodiment of the present invention provides a kind of optical line terminal, by arranging the transmitter that can produce palarization multiplexing light signal in optical line terminal inside, and issuing data module by two will independently input in transmitter by two paths of data signal respectively, make transmitter by the polarization laser of generation by after Polarization Controller, generate the polarization laser with particular polarization, after spectroscope, generate the polarization laser that two-way is identical, wherein a road exports polarization beam apparatus to, separately lead up to circulator through circulator laggard enter image intensifer, polarization beam apparatus is entered from circulator after modulation through circulator, synthesize final palarization multiplexing light signal with another road polarization laser and send, make to increase upstream and downstream bandwidth on the basis of original bandwidth of a device simultaneously, and reduce use cost, simplified apparatus structure, reduce pressure for upgrading, thus improve the experience of operator and user.
In addition, it is worth mentioning that, above-mentioned transmitter 1 can also be applied in optical network unit, thus optical network unit can be made to be produced palarization multiplexing light signal by this transmitter 1 and be sent.Further, further, can also add local laser demodulator in optical network unit, the palarization multiplexing light signal received can amplify by this laser, thus improves the sensitivity of described optoelectronic receiver, obtains better reception.
Further embodiment of this invention also provides a kind of optical network system 3, and described optical network system 3 at least comprises: optical line terminal 31 and multiple optical network unit 32;
Wherein, optical line terminal 31 comprises the transmitter 1 that previous embodiment provides, and/or optical network unit comprises the transmitter 1 that previous embodiment provides, this transmitter can according to the first data-signal, obtain first polarization laser with the first polarization direction, and the first polarization laser is divided into the second polarization laser and the 3rd polarization laser, and according to the anglec of rotation preset, the polarization direction of the 3rd polarization laser is rotated to the second polarization direction by the first polarization direction, after receiving the second data-signal, the first data-signal erasing in 3rd polarization laser of the second polarization direction can be had, and by the second data signal modulation in the 3rd polarization laser with the second polarization direction, obtain the 4th polarization laser with the second polarization direction, and according to the anglec of rotation preset, the polarization direction of the 4th polarization laser is rotated to the 3rd polarization direction by the second polarization direction, 3rd polarization direction is vertical with the first polarization direction, finally the second polarization laser and the 4th polarization laser with the 3rd polarization direction are merged into palarization multiplexing light signal.Namely this transmitter can by different Data import in the vertical polarization state in two polarization directions of laser.
Like this, by arranging above-mentioned transmitter 1 in optical line terminal 31 and/or optical network unit 32, make optical line terminal 31 and/or optical network unit 32 can produce specific palarization multiplexing light signal.
Further, under above-mentioned optical network system 3 can be applied in different scenes, under a kind of scene, as shown in Figure 8:
An optical line terminal 31 is connected with multiple optical network unit 32 by optical splitter 33.
Or under another kind of scene, as shown in Figure 9:
Multiple optical line terminal 31 is connected with multiple optical network unit 32 by array waveguide grating 34, and one of them optical line terminal 31 is corresponding connected with an optical network unit 32.
The embodiment of the present invention provides a kind of optical network system, by arranging transmitter at optical line terminal and/or optical network unit inside, this transmitter can transmitter by the polarization laser that produces by after Polarization Controller, generate the polarization laser with particular polarization, after spectroscope, generate the polarization laser that two-way is identical, wherein a road exports polarization beam apparatus to, separately lead up to circulator through circulator laggard enter image intensifer, polarization beam apparatus is entered from circulator after modulation through circulator, synthesize final palarization multiplexing light signal with another road polarization laser and send.Upstream and downstream bandwidth can be increased on the basis of original bandwidth of a device simultaneously, and make in network upgrade process, the equipment only need upgraded in optical line terminal and light network unit, do not need the basis instrument of changing go-between, decrease the cost of investment of network to a great extent, reduce pressure for upgrading, thus improve the experience of operator and user.
In several embodiments that the application provides, should be understood that, disclosed system, apparatus and method, can realize by another way.Such as, device embodiment described above is only schematic, such as, the division of described unit, be only a kind of logic function to divide, actual can have other dividing mode when realizing, such as multiple unit or assembly can in conjunction with or another system can be integrated into, or some features can be ignored, or do not perform.Another point, shown or discussed coupling each other or direct-coupling or communication connection can be by some interfaces, and the indirect coupling of device or unit or communication connection can be electrical, machinery or other form.
The described unit illustrated as separating component or can may not be and physically separates, and the parts as unit display can be or may not be physical location, namely can be positioned at a place, or also can be distributed in multiple network element.Some or all of unit wherein can be selected according to the actual needs to realize the object of the present embodiment scheme.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, also can be that the independent physics of unit comprises, also can two or more unit in a unit integrated.Above-mentioned integrated unit both can adopt the form of hardware to realize, and the form that hardware also can be adopted to add SFU software functional unit realizes.
The above-mentioned integrated unit realized with the form of SFU software functional unit, can be stored in a computer read/write memory medium.Above-mentioned SFU software functional unit is stored in a storage medium, comprising some instructions in order to make a computer equipment (can be personal computer, server, or the network equipment etc.) perform the part steps of method described in each embodiment of the present invention.And aforesaid storage medium comprises: USB flash disk, portable hard drive, read-only memory (Read-OnlyMemory, be called for short ROM), random access memory (RandomAccessMemory, be called for short RAM), magnetic disc or CD etc. various can be program code stored medium.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; change can be expected easily or replace, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of described claim.
Claims (8)
1. a transmitter, is characterized in that, comprising:
Laser, for modulating according to the first data-signal, obtains initial polarization laser;
Polarization Controller, for described initial polarization laser is carried out Polarization Control, obtains first polarization laser with the first polarization direction;
Spectroscope, for described first polarization laser is divided into the second polarization laser and the 3rd polarization laser, frequency and the wavelength of described first polarization laser, the second polarization laser and the 3rd polarization laser are identical;
Circulator or revolving mirror, for being rotated the polarization direction of the 3rd polarization laser to the second polarization direction by described first polarization direction according to the anglec of rotation preset;
Image intensifer or laser diode, the first data-signal erasing in 3rd polarization laser of the second polarization direction will be had, and the second data signal modulation is had in the 3rd polarization laser of the second polarization direction described, obtain the 4th polarization laser with the second polarization direction;
Described circulator or revolving mirror, also for being rotated to the 3rd polarization direction by described second polarization direction the polarization direction of described 4th polarization laser according to the described default anglec of rotation, described 3rd polarization direction is vertical with described first polarization direction;
Polarization beam apparatus, for described second polarization laser and the 4th polarization laser with the 3rd polarization direction are merged into palarization multiplexing light signal, and sends described palarization multiplexing light signal.
2. transmitter according to claim 1, is characterized in that, also comprises:
Circulator, after entering from the first port of described circulator for making the 3rd polarization laser with the first polarization direction, spread out of from the next port of described first port of described circulator according to the direction order determined by quiet bias field, to have the transmission direction of the 3rd polarization laser of the first polarization direction described in controlling, and after the 4th polarization laser described in making with the 3rd polarization direction enters from the second port of described circulator, spread out of from the next port of described second port of described circulator according to the direction order determined by quiet bias field, to have the transmission direction of the 4th polarization laser of the 3rd polarization direction described in controlling.
3. a method for light signal generation, it is characterized in that, described method comprises:
According to the first data-signal, obtain first polarization laser with the first polarization direction, and described first polarization laser is divided into the second polarization laser and the 3rd polarization laser, frequency and the wavelength of described first polarization laser, the second polarization laser and the 3rd polarization laser are identical;
According to the anglec of rotation preset, the polarization direction of the 3rd polarization laser is rotated to the second polarization direction by described first polarization direction;
To the first data-signal erasing in the 3rd polarization laser of described second polarization direction be had, and by the second data signal modulation in the 3rd polarization laser with described second polarization direction, obtain the 4th polarization laser with described second polarization direction;
Rotated to the 3rd polarization direction by described second polarization direction the polarization direction of described 4th polarization laser according to the described default anglec of rotation, described 3rd polarization direction is vertical with described first polarization direction;
Described second polarization laser and the 4th polarization laser with described 3rd polarization direction are merged into palarization multiplexing light signal, and sends described palarization multiplexing light signal.
4. method according to claim 3, is characterized in that, describedly obtains first polarization laser with the first polarization direction according to the first data-signal and comprises:
Modulate according to described first data-signal, obtain initial polarization laser;
Described initial polarization laser is carried out Polarization Control, there is described in obtaining the first polarization laser of the first polarization direction.
5. an optical line terminal, is characterized in that, described optical line terminal comprises:
Transmitter as claimed in claim 1 or 2.
6. optical line terminal according to claim 5, is characterized in that, described optical line terminal also comprises:
First issues data module, for being sent to by the first data-signal in the laser of described transmitter;
Second issues data module, in image intensifer that the second data-signal is sent to described transmitter or laser diode;
Wherein, described first data-signal and the second data-signal are separate two paths of data.
7. an optical network unit, is characterized in that, described optical network unit comprises:
Transmitter as claimed in claim 1 or 2.
8. an optical network system, described optical network system at least comprises: optical line terminal and multiple optical network unit, it is characterized in that, described optical line terminal comprises transmitter as claimed in claim 1 or 2, and/or described optical network unit comprises transmitter as claimed in claim 1 or 2.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2012/084655 WO2014075257A1 (en) | 2012-11-15 | 2012-11-15 | Transmitter, optical signal generation method, device and system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103222208A CN103222208A (en) | 2013-07-24 |
| CN103222208B true CN103222208B (en) | 2016-01-13 |
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| WO2015042842A1 (en) * | 2013-09-26 | 2015-04-02 | 华为技术有限公司 | Optical emission system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101107802A (en) * | 2005-01-26 | 2008-01-16 | 诺基亚西门子通信有限责任两合公司 | Method for optically transmitting polarisation multiplex signals |
| CN102143407A (en) * | 2010-01-29 | 2011-08-03 | 华为技术有限公司 | Method, system and device for transmitting wavelength division multiplexing passive optical network |
| CN102246448A (en) * | 2008-12-12 | 2011-11-16 | 阿尔卡特朗讯美国公司 | Optical communication using polarized transmit signal |
| WO2012126402A2 (en) * | 2012-03-31 | 2012-09-27 | 华为技术有限公司 | Method, device and system for processing optical network signal |
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| US20040208646A1 (en) * | 2002-01-18 | 2004-10-21 | Seemant Choudhary | System and method for multi-level phase modulated communication |
| CN102253498A (en) * | 2010-05-18 | 2011-11-23 | 昂纳信息技术（深圳）有限公司 | Dispersion compensator for reducing polarization of polarization mode |
| CN102136674B (en) * | 2010-12-14 | 2013-01-30 | 华为技术有限公司 | External cavity laser and WDM-PON (Wavelength Division Multiplex-Passive Optical Network) system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101107802A (en) * | 2005-01-26 | 2008-01-16 | 诺基亚西门子通信有限责任两合公司 | Method for optically transmitting polarisation multiplex signals |
| CN102246448A (en) * | 2008-12-12 | 2011-11-16 | 阿尔卡特朗讯美国公司 | Optical communication using polarized transmit signal |
| CN102143407A (en) * | 2010-01-29 | 2011-08-03 | 华为技术有限公司 | Method, system and device for transmitting wavelength division multiplexing passive optical network |
| WO2012126402A2 (en) * | 2012-03-31 | 2012-09-27 | 华为技术有限公司 | Method, device and system for processing optical network signal |
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| CN103222208A (en) | 2013-07-24 |
| WO2014075257A1 (en) | 2014-05-22 |
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