CN103222208A - Transmitter, optical signal generation method apparatus and system - Google Patents
Transmitter, optical signal generation method apparatus and system Download PDFInfo
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- CN103222208A CN103222208A CN2012800021280A CN201280002128A CN103222208A CN 103222208 A CN103222208 A CN 103222208A CN 2012800021280 A CN2012800021280 A CN 2012800021280A CN 201280002128 A CN201280002128 A CN 201280002128A CN 103222208 A CN103222208 A CN 103222208A
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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
The invention provides a transmitter, an optical signal generation method, an apparatus and a system, and relates to the field of optical communication. The invention can reduce usage cost, simplify equipment structure and reduce upgrading pressure, thereby improving experience of service provider and user. The method comprises the following steps: obtaining a first polarization laser according to the first data signal, dividing the first polarization laser into a second polarization laser and a third polarization laser; rotating the third polarization laser to a second polarization direction according to a preset rotation angle; erasing the fist data signal in the third polarization laser, modulating the second data signal in the third polarization laser, obtaining a forth polarization laser; rotating the forth polarization laser to a third polarization direction according to a preset rotation angle, and the third polarization direction is vertical to the first polarization direction; combining the second polarization laser and the forth polarization laser with the third polarization direction into a polarization multiplexing optical signal. The embodiment of the invention is used for producing a polarization multiplexing optical signal.
Description
Technical field
The present invention relates to the communications field, relate in particular to a kind of transmitter, light signal generating method, Apparatus and system.
Background technology
What mainly adopted in present broadband access field is the technical scheme of EPON, when the bandwidth upgrading of EPON, corresponding electric device upgrade cost is significantly risen.Current, the method that improves the EPON transmission rate mainly comprises: high order modulation technology and polarisation of light multiplex technique, wherein, the high order modulation technology mainly is by the compressed signal bandwidth, and the polarisation of light multiplex technique mainly is two vertical polarization attitudes that the transmission data are loaded into light respectively.
In existing a kind of polarisation of light multiplex technique, at first the two independent electrical data signal number is loaded on the light wave by the light external modulator, again by after the polarized orthogonal processing, it is identical that the two paths of data light wave forms wavelength, the two-way light data of polarization orthogonal obtain quality light signal preferably by the polarized composite wave device at last.
At existing another kind of polarisation of light multiplex technique, produce the two independent data by two programmable gate arrays at first respectively, then this two paths of data is changed into analog signal respectively, and two paths of data is loaded on the vertical polarization state of two polarization states through the light external modulator.
But, for above-mentioned two kinds of prior aries, because equipment is limit, when different data-signals being loaded into the vertical polarization face of light wave, must make the external modulator of using up, since self cost height of this external modulator, complex structure, and then cause adopting the cost height of the passive optical network of this laser, complex structure, pressure for upgrading is big, poor user experience.
Summary of the invention
Embodiments of the invention provide a kind of transmitter, light signal generating method, Apparatus and system, mode that can be by direct modulated laser device with distributed feedback with different data load on two vertical polarization attitudes of laser, reduced use cost, the simplified apparatus structure, reduce pressure for upgrading, thereby improved user experience.
For achieving the above object, embodiments of the invention adopt following technical scheme:
First aspect provides a kind of transmitter, comprising:
Laser is used for modulating according to first data-signal, obtains initial polarization laser;
Polarization Controller is used for described initial polarization laser is carried out Polarization Control, obtains having first polarization laser of first polarization direction;
Spectroscope is used for described first polarization laser is divided into second polarization laser and the 3rd polarization laser, and the frequency and the wavelength of described first polarization laser, second polarization laser and the 3rd polarization laser are identical;
Circulator or revolving mirror are used for according to the default anglec of rotation polarization direction of the 3rd polarization laser being rotated to second polarization direction by described first polarization direction;
Image intensifer or laser diode, first data-signal that will have in the 3rd polarization laser of second polarization direction is wiped, and with second data signal modulation in described the 3rd polarization laser with second polarization direction, obtain having the 4th polarization laser of second polarization direction;
Described circulator or revolving mirror also are used for according to the described default anglec of rotation polarization direction of described the 4th polarization laser being rotated to the 3rd polarization direction by described second polarization direction, and described the 3rd polarization direction is vertical with described first polarization direction;
Polarization beam apparatus is used for described second polarization laser and the 4th polarization laser with the 3rd polarization direction are merged into the palarization multiplexing light signal, and sends described palarization multiplexing light signal.
In second kind of possible implementation, in conjunction with first aspect, described transmitter also comprises:
Circulator is used to control polarization laser and transmits along single direction, and described polarization laser is entered from a port of described circulator, spreads out of according to the next port of the direction order of being determined by quiet bias field from described circulator.
Second aspect provides a kind of light signal generating method, and described method comprises:
Obtain first polarization laser with first polarization direction according to first data-signal, and described first polarization laser is divided into second polarization laser and the 3rd polarization laser, the frequency and the wavelength of described first polarization laser, second polarization laser and the 3rd polarization laser are identical;
According to the default anglec of rotation polarization direction of the 3rd polarization laser is rotated to second polarization direction by described first polarization direction;
First data-signal that will have in the 3rd polarization laser of described second polarization direction is wiped, and with second data signal modulation in having the 3rd polarization laser of described second polarization direction, obtain having the 4th polarization laser of described second polarization direction;
According to the described default anglec of rotation polarization direction of described the 4th polarization laser is rotated to the 3rd polarization direction by described second polarization direction, described the 3rd polarization direction is vertical with described first polarization direction;
Described second polarization laser and the 4th polarization laser with described the 3rd polarization direction are merged into the palarization multiplexing light signal.
In first kind of possible implementation,, describedly obtain first polarization laser according to first data-signal and comprise with first polarization direction in conjunction with second aspect:
Modulate according to described first data-signal, obtain initial polarization laser;
Described initial polarization laser is carried out Polarization Control, obtain described first polarization laser with 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, is used for first data-signal is sent to the laser of described transmitter;
Second issues data module, is used for second data-signal is sent to the image intensifer or the laser diode of described transmitter;
Wherein, described first data-signal and second data-signal are separate two paths of data.
Fourth aspect provides a kind of optical network unit, and described optical network unit comprises:
The described transmitter of first aspect.
The 5th aspect, a kind of optical network system is provided, described optical network system comprises at least: optical line terminal and a plurality of optical network unit, described optical line terminal comprise as the described transmitter of first aspect, and/or described optical network unit comprises as the described transmitter of first aspect.
The embodiment of the invention provides a kind of transmitter, light signal generating method, Apparatus and system, by the polarization laser that will produce by behind the Polarization Controller, generation has the polarization laser of particular polarization, behind spectroscope, generate the identical polarization laser of two-way, wherein one the tunnel export polarization beam apparatus to, another road enters reflective semiconductor optical amplifier by circulator behind Faraday rotator, after Faraday rotator enters polarization beam apparatus from circulator, synthesize final palarization multiplexing light signal in modulation with another road polarization laser.Reduced use cost, the simplified apparatus structure reduces pressure for upgrading, thereby has improved operator and user's experience.
Description of drawings
The schematic diagram of a kind of transmitter that Fig. 1 provides for the embodiment of the invention;
The polarization laser that Fig. 2 provides for the embodiment of the invention is at the schematic diagram through change of polarization before and after the circulator;
The situation of change schematic diagram that enters the Wave data that loads in the polarization laser before and after the image intensifer that Fig. 3 provides for the embodiment of the invention;
Fig. 4 passes through the schematic diagram of circulator front and back change of polarization once more for the embodiment of the invention provides polarization laser;
The structural representation of a kind of transmitter that Fig. 5 provides for the embodiment of the invention;
The schematic flow sheet of a kind of light signal generating method that Fig. 6 provides for the embodiment of the invention;
The structural representation of a kind of optical line terminal that Fig. 7 provides for the embodiment of the invention;
The structural representation of a kind of optical network system that Fig. 8 provides for the embodiment of the invention;
The structural representation of the another kind of optical network system that Fig. 9 provides for the embodiment of the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
The embodiment of the invention provides a kind of transmitter 1, as shown in Figure 1, comprising:
Laser 11 is used for modulating according to first data-signal, obtains initial polarization laser, and initial polarization laser is transferred to Polarization Controller 12;
Circulator or revolving mirror 14, be used to receive the 3rd polarization laser, according to the default anglec of rotation polarization direction of the 3rd polarization laser is rotated to second polarization direction by first polarization direction, and the 3rd polarization laser behind the change of polarized direction is sent to image intensifer or laser diode 15;
Image intensifer or laser diode 15, receive the 3rd polarization laser behind the change of polarized direction from circulator or revolving mirror 14, first data-signal that will have in the 3rd polarization laser of second polarization direction is wiped, and with second data signal modulation in having the 3rd polarization laser of second polarization direction, obtain having the 4th polarization laser of second polarization direction, and the 4th polarization laser that will have second polarization direction is sent to circulator or revolving mirror 14;
Circulator or revolving mirror 14, also be used to receive the 4th polarization laser with second polarization direction, according to the default anglec of rotation polarization direction of the 4th polarization laser is rotated to the 3rd polarization direction by second polarization direction, the 3rd polarization direction is vertical with first polarization direction, and the 4th polarization laser that will have the 3rd polarization direction is sent to polarization beam apparatus 16;
Wherein, as shown in Figure 1, concrete connected mode between each device can for: the input of laser 11 is used to import 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 used to import second digital signal, the output of image intensifer or laser diode 15 connects circulator or revolving mirror 14 second inputs, and circulator or revolving mirror 14 second outputs connect second input of polarization beam apparatus 16.
Exemplary, transmitter 1 produce the palarization multiplexing light signal specific implementation can for:
Suppose to have the two independent digital signal, wherein first digital signal is X.Pol Data, and second digital signal is Y.Pol Data.
At first with X.Pol Data input distributed feedback laser 11, by laser 11 is directly modulated, output has the initial polarization laser of X.Pol Data, is designated as laser X.Pol Data.Because this laser X.Pol Data may have a plurality of polarization directions, therefore laser X.Pol Data is input in the Polarization Controller 12, through obtaining having the laser X.Pol Data of single polarization direction behind the Polarization Controller 12, suppose that this single polarization direction is first polarization direction.
Then, the laser X.Pol Data that will have first polarization direction is by spectroscope 13, obtain identical two-way polarization laser with laser X.Pol Data, be designated as laser X.PolDataA and laser X.Pol DataB respectively, it is medium to be synthesized wherein laser X.Pol DataA to be input to polarization beam apparatus 16, and laser X.Pol DataB is input in circulator or the revolving mirror 14.
With the circulator is example, this circulator can change the polarization state of polarization laser by externally-applied magnetic field, suppose that the default anglec of rotation is 45 degree, after then laser X.Pol DataB being input to circulator, the polarization direction of laser X.Pol DataB can rotate 45 degree by certain orientation, obtain having the laser X.Pol DataB of second polarization direction, this process as shown in Figure 2:
Wherein, the 1. 2. different polarization directions constantly that are polarization laser of indication among Fig. 2:
1. indication is that polarization laser does not enter the preceding polarization direction of Faraday rotator;
2. indication is that polarization laser is in the polarization direction of spending through Faraday rotator post deflection 45 for the first time.
Then, the laser X.Pol DataB that will have second polarization direction again is input to image intensifer or laser diode 15.
With the semiconductor optical amplifier is example, the gain of image intensifer is relevant with the injection luminous power, when injecting luminous power greater than certain value, image intensifer will enter saturation condition, the gain that enters saturation condition is very little, utilize this characteristic to carry out shaping to broadcasting the Wave data that loads, wherein the bit that power is high " 1 " can effectively not amplified, and the low bit " 0 " of power obtains the amplification of big multiple.Therefore, through after being in the image intensifer of saturation condition, the light signal that has digital signal of injection will become direct current output light, promptly is equivalent to the digital signal that has in the light signal of digital signal is wiped.
Image intensifer is common and inject light respectively in local side and terminal, between be connected by very long optical fiber, the decay that causes injecting light is serious, be difficult to satisfy the saturation conditions of image intensifer, compared with prior art, image intensifer and laser all are arranged in the palarization multiplexing optical signal transmitter 1 that present embodiment provides, inject light and almost do not have power attenuation, can satisfy the saturation conditions of image intensifer, improved greatly injecting the ability of wiping of the digital signal on the light, can reach the best effect of wiping.
Therefore, when laser X.Pol DataB enter image intensifer after, the data X.Pol Data among the laser X.Pol DataB can be wiped, make laser X.Pol DataB become one tunnel direct current light signal that does not have data, as shown in Figure 3:
What wherein, 1. 2. represent is the situation of change that enters the Wave data that loads in the polarization laser of image intensifer front and back.
1. before expression enters amplifier, the Wave data that loads in the polarization laser;
2. after expression entered amplifier, the Wave data that loads in the polarization laser had been shaped as the direct current light output of high level by semiconductor amplifier, had promptly reached the effect of data erase.
Then, with Y.Pol Data input image intensifer or laser diode 15, in image intensifer or laser diode 15, the direct current light signal is modulated, output has the initial polarization laser of Y.Pol Data, be designated as laser Y.Pol Data, and laser Y.Pol Data is input in circulator or the revolving mirror 14.
With the circulator is example, suppose that the default anglec of rotation is 45 degree, after then laser Y.Pol Data being input to circulator, rotation 45 degree can be continued by certain orientation in the polarization direction of laser Y.Pol Data, obtain having the laser Y.Pol Data of the 3rd polarization direction, then the 3rd polarization direction of laser Y.Pol Data is vertical with first polarization direction.Thereby make that the polarization direction of laser X.Pol DataA and laser Y.Pol Data is orthogonal, this process as shown in Figure 4:
Wherein: 1. indication is that polarization laser does not enter the preceding polarization direction of Faraday rotator;
2. indication is that polarization laser is in the polarization direction of spending through Faraday rotator post deflection 45 for the first time;
3. indication is that polarization laser is for the second time through continuing the polarization direction of deflection 45 degree behind the Faraday rotator.
Finally, will have in the 3rd polarization direction polarization laser Y.Pol Data input polarization controller 12, and and have the first polarization direction laser X.Pol DataA and synthesize multiplexing polarized light signal.
Concrete, transmitter 1 can also comprise:
As shown in Figure 5, annexation behind the adding circulator 17 is: the input of laser 11 is used to import 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-Paro chamber laser diode 15, second input of image intensifer or laser diode 15 is used to import second digital signal, the output of image intensifer or laser diode 15 connects circulator or revolving mirror 14 second inputs, and circulator or revolving mirror 14 second outputs connect second input of polarization beam apparatus 16.
Wherein, above-mentioned laser is the laser with modulation function, for example can be distributed feed-back formula (Distributed Feed Back, DFB) laser, this distributed feed-back formula laser has modulation function, needn't use external modulator, and then solve that fibre system adopts external modulator and the cost height that causes, baroque problem; Circulator can be Faraday rotator (Faraday Rotator, FR), revolving mirror can be faraday rotation mirror (Faraday Rotation Mirror, FRM); Image intensifer can be the emission-type semiconductor optical amplifier (Reflective Semiconductor Optical Amplifier, RSOA), laser diode can for Fabry-Paro chamber laser diode (Fabry-Perot Laser Diode, FPLD).
The embodiment of the invention provides a kind of transmitter, by the polarization laser that will produce by behind the Polarization Controller, generation has the polarization laser of particular polarization, behind spectroscope, generate the identical polarization laser of two-way, wherein one the tunnel export polarization beam apparatus to, another road is gone into image intensifer by circulator through circulator is laggard, after circulator enters polarization beam apparatus from circulator, synthesize final palarization multiplexing light signal in modulation with another road polarization laser.Reduced use cost, the simplified apparatus structure reduces pressure for upgrading, thereby has improved operator and user's experience.
The embodiment of the invention provides a kind of light signal generating method, and as shown in Figure 6, this method comprises;
S601, transmitter are according to first data-signal, obtain first polarization laser with first polarization direction, and first polarization laser is divided into second polarization laser and the 3rd polarization laser, the frequency and the wavelength of first polarization laser, second polarization laser and the 3rd polarization laser are identical.
Wherein, concrete implementation can may further comprise the steps:
S6011, transmitter first data-signal are modulated, and obtain initial polarization laser;
S6012, transmitter carry out Polarization Control with initial polarization laser, obtain having first polarization laser of first polarization direction.
The anglec of rotation that S602, transmitter basis are preset rotates to second polarization direction with the polarization direction of the 3rd polarization laser by first polarization direction;
First data-signal that S603, transmitter will have in the 3rd polarization laser of second polarization direction is wiped, and with second data signal modulation in having the 3rd polarization laser of second polarization direction, obtain having the 4th polarization laser of second polarization direction;
The anglec of rotation that S604, transmitter basis are preset rotates to the 3rd polarization direction with the polarization direction of the 4th polarization laser by second polarization direction, and the 3rd polarization direction is vertical with first polarization direction;
S605, transmitter merge into the palarization multiplexing light signal with second polarization laser and the 4th polarization laser with the 3rd polarization direction, and send the palarization multiplexing light signal.
The embodiment of the invention provides a kind of light signal generating method, by the polarization laser that will produce by behind the Polarization Controller, generation has the polarization laser of particular polarization, behind spectroscope, generate the identical polarization laser of two-way, wherein one the tunnel export polarization beam apparatus to, another road is gone into image intensifer by circulator through circulator is laggard, after circulator enters polarization beam apparatus from circulator, synthesize final palarization multiplexing light signal in modulation with another road polarization laser.Reduced use cost, the simplified apparatus structure reduces pressure for upgrading, thereby has improved operator and user's experience.
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, is used for first data-signal is sent to the laser of transmitter;
Second issues data module 22, is used for second data-signal is sent to the image intensifer or the laser diode of transmitter;
Wherein, first data-signal and second data-signal are separate two paths of data.
The embodiment of the invention provides a kind of optical line terminal, by producing palarization multiplexing optical signal transmitting machine in the inner setting of optical line terminal, and issuing data module by two respectively will be independently in the two paths of data signal input transmitter, after making transmitter that the polarization laser that produces is passed through Polarization Controller, generation has the polarization laser of particular polarization, behind spectroscope, generate the identical polarization laser of two-way, wherein one the tunnel export polarization beam apparatus to, another road is gone into image intensifer by circulator through circulator is laggard, modulating after circulator enters polarization beam apparatus from circulator, with the synthetic final palarization multiplexing light signal of another road polarization laser and send, make and on the basis of original bandwidth of a device, increase upstream and downstream bandwidth simultaneously, and reduced use cost, the simplified apparatus structure reduces pressure for upgrading, thereby has improved operator and user's experience.
In addition, what deserves to be mentioned is that above-mentioned transmitter 1 can also be applied in the optical network unit, thereby can make optical network unit produce palarization multiplexing light signal and send by this transmitter 1.And, further, can also in optical network unit, add local laser demodulator, this laser can amplify the palarization multiplexing light signal that receives, thus the sensitivity that improves 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 comprises at least: optical line terminal 31 and a plurality of 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 be according to first data-signal, obtain first polarization laser with first polarization direction, and first polarization laser is divided into second polarization laser and the 3rd polarization laser, and the polarization direction of the 3rd polarization laser is rotated to second polarization direction by first polarization direction according to the default anglec of rotation, after receiving second data-signal, first data-signal that has in the 3rd polarization laser of second polarization direction can be wiped, and with second data signal modulation in having the 3rd polarization laser of second polarization direction, obtain having the 4th polarization laser of second polarization direction, and the polarization direction of the 4th polarization laser is rotated to the 3rd polarization direction by second polarization direction according to the default anglec of rotation, the 3rd polarization direction is vertical with first polarization direction, at last second polarization laser and the 4th polarization laser with the 3rd polarization direction is merged into the palarization multiplexing light signal.Promptly this transmitter can be with different data load on the vertical polarization state of two polarization directions of laser.
Like this, by above-mentioned transmitter 1 is set 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, above-mentioned optical network system 3 can be applied under the different scenes, under a kind of scene, as shown in Figure 8:
An optical line terminal 31 links to each other with a plurality of optical network units 32 by optical splitter 33.
Perhaps under another kind of scene, as shown in Figure 9:
A plurality of optical line terminals 31 link to each other with a plurality of optical network units 32 by array waveguide grating 34, one of them optical line terminal 31 and 32 corresponding linking to each other an of optical network unit.
The embodiment of the invention provides a kind of optical network system, by transmitter being set at optical line terminal and/or optical network unit inside, this transmitter can transmitter with the polarization laser that produces by behind the Polarization Controller, generation has the polarization laser of particular polarization, behind spectroscope, generate the identical polarization laser of two-way, wherein one the tunnel export polarization beam apparatus to, another road is gone into image intensifer by circulator through circulator is laggard, in modulation after circulator enters polarization beam apparatus from circulator, with the synthetic final palarization multiplexing light signal of another road polarization laser and send.Can on the basis of original bandwidth of a device, increase upstream and downstream bandwidth simultaneously, and make in the network upgrade process, only need the equipment in upgrading optical line terminal and the light network unit, do not need to change the basis instrument of go-between, reduced the cost of investment of network to a great extent, reduce pressure for upgrading, thereby improved operator and user's experience.
In several embodiment that the application provided, should be understood that, disclosed system, apparatus and method can realize by other mode.For example, device embodiment described above only is schematic, for example, the division of described unit, only be that a kind of logic function is divided, during actual the realization other dividing mode can be arranged, for example a plurality of unit or assembly can in conjunction with or can be integrated into another system, or some features can ignore, or do not carry out.Another point, the shown or coupling each other discussed or directly to be coupled or to communicate to connect can be by some interfaces, the indirect coupling of device or unit or communicate to connect can be electrically, machinery or other form.
Described unit as separating component explanation can or can not be physically to separate also, and the parts that show as the unit can be or can not be physical locations also, promptly can be positioned at a place, perhaps also can be distributed on a plurality of network element.Can select wherein some or all of unit to realize the purpose of present embodiment scheme according to the actual needs.
In addition, each functional unit in each embodiment of the present invention can be integrated in the processing unit, also can be that the independent physics in each unit comprises, also can be integrated in the unit two or more unit.Above-mentioned integrated unit both can adopt the form of hardware to realize, the form that also can adopt hardware to add SFU software functional unit realizes.
The above-mentioned integrated unit of realizing with the form of SFU software functional unit can be stored in the computer read/write memory medium.Above-mentioned SFU software functional unit is stored in the storage medium, comprise some instructions with so that computer equipment (can be personal computer, server, the perhaps network equipment etc.) carry out the part steps of the described method of each embodiment of the present invention.And aforesaid storage medium comprises: USB flash disk, portable hard drive, read-only memory (Read-Only Memory, abbreviation ROM), various media that can be program code stored such as random access memory (Random Access Memory is called for short RAM), magnetic disc or CD.
The above; only be the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; can expect easily changing or replacing, 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 is used for modulating according to first data-signal, obtains initial polarization laser;
Polarization Controller is used for described initial polarization laser is carried out Polarization Control, obtains having first polarization laser of first polarization direction;
Spectroscope is used for described first polarization laser is divided into second polarization laser and the 3rd polarization laser, and the frequency and the wavelength of described first polarization laser, second polarization laser and the 3rd polarization laser are identical;
Circulator or revolving mirror are used for according to the default anglec of rotation polarization direction of the 3rd polarization laser being rotated to second polarization direction by described first polarization direction;
Image intensifer or laser diode, first data-signal that will have in the 3rd polarization laser of second polarization direction is wiped, and with second data signal modulation in described the 3rd polarization laser with second polarization direction, obtain having the 4th polarization laser of second polarization direction;
Described circulator or revolving mirror also are used for according to the described default anglec of rotation polarization direction of described the 4th polarization laser being rotated to the 3rd polarization direction by described second polarization direction, and described the 3rd polarization direction is vertical with described first polarization direction;
Polarization beam apparatus is used for described second polarization laser and the 4th polarization laser with the 3rd polarization direction are merged into the palarization multiplexing light signal, and sends described palarization multiplexing light signal.
2. transmitter according to claim 1 is characterized in that, also comprises:
Circulator, be used to make described polarization laser to enter from a port of described circulator after, spread out of according to the next port of the direction order of determining by quiet bias field, so that the transmission direction of control polarization laser from described circulator.
3. the method for a light signal generating is characterized in that, described method comprises:
According to first data-signal, obtain first polarization laser with first polarization direction, and described first polarization laser is divided into second polarization laser and the 3rd polarization laser, the frequency and the wavelength of described first polarization laser, second polarization laser and the 3rd polarization laser are identical;
According to the default anglec of rotation polarization direction of the 3rd polarization laser is rotated to second polarization direction by described first polarization direction;
First data-signal that will have in the 3rd polarization laser of described second polarization direction is wiped, and with second data signal modulation in having the 3rd polarization laser of described second polarization direction, obtain having the 4th polarization laser of described second polarization direction;
According to the described default anglec of rotation polarization direction of described the 4th polarization laser is rotated to the 3rd polarization direction by described second polarization direction, described the 3rd polarization direction is vertical with described first polarization direction;
Described second polarization laser and the 4th polarization laser with described the 3rd polarization direction are merged into the palarization multiplexing light signal, and send described palarization multiplexing light signal.
4. method according to claim 3 is characterized in that, describedly obtains first polarization laser with first polarization direction according to 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, obtain described first polarization laser with 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, is used for first data-signal is sent to the laser of described transmitter;
Second issues data module, is used for second data-signal is sent to the image intensifer or the laser diode of described transmitter;
Wherein, described first data-signal and 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. optical network system, described optical network system comprises at least: optical line terminal and a plurality of 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.
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| PCT/CN2012/084655 WO2014075257A1 (en) | 2012-11-15 | 2012-11-15 | Transmitter, optical signal generation method, device and system |
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| CN103222208A true CN103222208A (en) | 2013-07-24 |
| CN103222208B CN103222208B (en) | 2016-01-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105580222A (en) * | 2013-09-26 | 2016-05-11 | 华为技术有限公司 | Optical emission system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040208646A1 (en) * | 2002-01-18 | 2004-10-21 | Seemant Choudhary | System and method for multi-level phase modulated communication |
| 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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| 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 |
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| US20040208646A1 (en) * | 2002-01-18 | 2004-10-21 | Seemant Choudhary | System and method for multi-level phase modulated communication |
| 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 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105580222A (en) * | 2013-09-26 | 2016-05-11 | 华为技术有限公司 | Optical emission system |
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| WO2014075257A1 (en) | 2014-05-22 |
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