CN105323008A - Optical transceiver module and working parameter configuration method and device thereof - Google Patents
Optical transceiver module and working parameter configuration method and device thereof Download PDFInfo
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- CN105323008A CN105323008A CN201410318615.9A CN201410318615A CN105323008A CN 105323008 A CN105323008 A CN 105323008A CN 201410318615 A CN201410318615 A CN 201410318615A CN 105323008 A CN105323008 A CN 105323008A
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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
- H04B10/40—Transceivers
Abstract
The invention discloses an optical transceiver module and a working parameter configuration method and device thereof. The optical transceiver module comprises a controller, an optical-electro conversion unit comprising at least one path of optical-electro conversion channel and an electro-optical conversion unit comprising at least one path of electro-optical conversion channel, wherein the controller is connected with the optical-electro conversion unit and the electro-optical conversion unit, and is used for configuring the working parameters of the optical-electro conversion unit and the working parameters of the electro-optical conversion unit, the working parameters comprising at least one of the following parameters: operating rate, channel quantity and working mode; the optical-electro conversion unit is used for carrying out the function of converting the optical signals into the electrical signals according to the working parameters; and the electro-optical conversion unit is used for carrying out the function of converting the electrical signals into the optical signals according to the working parameters. According to the optical transceiver module and the working parameter configuration method and device thereof, the controller configures the working parameters of the optical transceiver module, so that the optical transceiver module is allowed to be compatible with different scenes. Besides, in the passive optical network application, the optical line terminal can be compatible with more types of optical subscriber units.
Description
Technical field
The present invention relates to the communications field, in particular to collocation method and the device of a kind of optical transceiver module and running parameter thereof.
Background technology
The development for many years of passive optical network technique experience, presents multiple technologies at present and deposits, accessing the situation of taking as the leading factor with EPON (PassiveOpticalNetwork, referred to as PON).
In some application-specific scenes, such as, for high-end user, adopt point-to-point continuous mode (PtP) technology.It is main optical access network that Japan, Korea S and China dispose ethernet passive optical network (EthernetPassiveOpticalNetwork, referred to as EPON), adopts point-to-multipoint burst mode (PtMP) standard.The large operator great majority of Europe and the U.S. select Gigabit Passive Optical Network (GigabitPassiveOpticalNetwork, referred to as GPON) technology.A small amount of experimental network of wavelength division multiplexing (WavelengthDivisionMultiplexing, referred to as WDM) PON is had in small part area.
In EPON, optical module is as having no chance the carrier transmitted between optical network device, and transmitting terminal converts the electrical signal to light signal, and after Optical Fiber Transmission, receiving terminal converts the signal of telecommunication to light signal again.
Optical module is made up of opto-electronic device, functional circuit and optical interface etc. usually, and opto-electronic device comprises transmitting and receiving two parts.Radiating portion is: the signal of telecommunication inputting a constant bit rate launches the modulated light signal of respective rate through internal drive chip process rear drive semiconductor laser (LD) or light-emitting diode (LED), usually, its inside, with luminous power automatic control circuit, makes the optical signal power of output keep stable.Receiving unit is: be converted to the signal of telecommunication by photo-detector after the light signal input optical module of a constant bit rate, export the signal of telecommunication of phase code rate after preamplifier.
According to Function Classification, optical module comprises Optical Receivers, optical transmission module, optical transceiver module and light forwarding module etc.Optical Receivers, for receiving optical signals, carries out opto-electronic conversion to light signal, converts light signal to the signal of telecommunication.Optical transmission module, for sending light signal, carrying out electro-optic conversion to the signal of telecommunication, converting the electrical signal to light signal.Optical transceiver module, also referred to as the integrated module of optical transceiver, for carrying out opto-electronic conversion and electro-optic conversion, to carry out reception and the transmission of light signal and the signal of telecommunication.
In correlation technique, after optical module dispatches from the factory, because its hardware configuration is determined, cannot change its running parameter, therefore, the optical module in correlation technique can only be operated in fixing running parameter.Common running parameter comprises, operating rate, mode of operation etc.Optical module in correlation technique is operated in steady job parameter, and the light signal of different user and the running parameter needed for Electric signal processing are not quite similar, and therefore, the optical module in correlation technique can not simultaneously compatible multiple user.
In addition, in correlation technique, optical module is single channel, and namely an optical module only has an opto-electronic conversion passage or an electrooptic switching element.But, along with the continuous lifting of optical communication system capacity, need to use multiple passage process light signal and the signal of telecommunication simultaneously.In order to realize multiple passage process light signal and the signal of telecommunication, in correlation technique, multiple single channel optical module being carried out stacking, namely using multiple single channel optical module simultaneously, form multichannel by the single channel of multiple single channel optical module.But, because each single channel optical module has physical interface, when forming multichannel by multiple single channel optical module, cause physical interface quantity many.
For in correlation technique because optical module is operated in steady job parameter, cause optical transceiver module cannot the problem of compatible multiple user, and the stacking problem causing physical interface many of single channel optical module, not yet propose effective solution at present.
Summary of the invention
For in correlation technique because optical transceiver module is operated in steady job parameter, cause optical transceiver module cannot the problem of compatible multiple user, the invention provides collocation method and the device of a kind of optical transceiver module and running parameter thereof, at least to solve the problem.
According to an aspect of the present invention, provide a kind of optical transceiver module, comprise: controller, comprise the photoelectric conversion unit of at least one road opto-electronic conversion passage and comprise the electrooptic switching element of at least one road electro-optic conversion passage, wherein, described controller, be connected with described electrooptic switching element with described photoelectric conversion unit, for configuring the running parameter of described photoelectric conversion unit and described electrooptic switching element; Described running parameter comprise following one of at least: operating rate, number of channels and mode of operation, wherein, described mode of operation comprises continuous mode and burst mode; Described photoelectricity changes and turns unit, for carrying out opto-electronic conversion according to described running parameter; Described electrooptic switching element, for carrying out electro-optic conversion according to described running parameter.
Alternatively, described controller, for responding the order of described optical transceiver module place equipment, configures described running parameter, wherein, carries the information of described running parameter in described order.
Alternatively, opto-electronic conversion passage described in each, comprising: photodetector, for light signal is converted to photoelectric current; Trans-impedance amplifier, is connected with described controller with described photodetector, can be operated in described continuous mode or described burst mode, for converting described photoelectric current to voltage signal according to described running parameter; Limiting amplifier, is connected with described trans-impedance amplifier, can be operated in described continuous mode or described burst mode, for carrying out limited range enlargement process to described voltage signal.
Alternatively, opto-electronic conversion passage described in each, also comprises: electrical dispersion compensation unit, between described trans-impedance amplifier and described limiting amplifier, can be operated in described continuous mode or described burst mode, for carrying out electrical dispersion compensation to described voltage signal; Described limiting amplifier, also for carrying out limited range enlargement process to the described voltage signal after electrical dispersion compensation.
Alternatively, opto-electronic conversion passage described in each, also comprise: data fan out unit, between described trans-impedance amplifier and described limiting amplifier, for described voltage signal being split into first via signal and the second road signal, wherein, described first via signal is the voltage signal of point-to-multipoint burst mode, and described second road signal is the voltage signal of point-to-point continuous mode; Described limiting amplifier, is connected with described data fan out unit, for carrying out limited range enlargement process to described first via signal.
Alternatively, electro-optic conversion passage described in each road, comprising: laser drive unit, is connected with described controller, for converting the electrical signal to current drive signal according to described running parameter; Laser, is connected with described laser drive unit, for converting described current drive signal to light signal.
Alternatively, electro-optic conversion passage described in each road, also comprises: clock data recovery unit, is connected with the input of described laser drive unit, has bypass effect, for carrying out clock recovery to the described signal of telecommunication of set rate.
Alternatively, described laser comprise following one of at least: distributed feed-back (DistributedFeedBack, referred to as DFB) laser, electro-absorption modulation (Electro-absorptionModulatedLaser, referred to as EML).
According to another aspect of the present invention, provide a kind of collocation method of optical transceiver module running parameter, comprise: the order receiving optical transceiver module place equipment, wherein, the information of running parameter is carried in described order, described running parameter comprise following one of at least: operating rate, number of channels and mode of operation, wherein, described mode of operation comprises continuous mode and burst mode; The running parameter of optical transceiver module according to described command configuration.
According to a further aspect of the invention, provide a kind of inking device of optical transceiver module running parameter, comprise: receiver module, for receiving the order of optical transceiver module place equipment, wherein, in described order, carry the information of running parameter, described running parameter comprise following one of at least: operating rate, number of channels and mode of operation, wherein, described mode of operation comprises continuous mode and burst mode; Configuration module, for the running parameter of optical transceiver module according to described command configuration.
By the present invention, the running parameter of controller configuration optical transceiver module, makes optical transceiver module can compatible different scene.In addition, in multichannel situation, the problem that the physical port caused when single channel optical module can also be avoided stacking is too much.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the structured flowchart of the optical transceiver module according to the embodiment of the present invention;
Fig. 2 is the system architecture diagram of the EPON according to the embodiment of the present invention;
Fig. 3 is the structured flowchart of a kind of optical transceiver module according to the embodiment of the present invention;
Fig. 4 is the structured flowchart of the single channel optical transceiver module according to the embodiment of the present invention;
Fig. 5 is the structured flowchart according to another single channel optical transceiver module of the embodiment of the present invention;
Fig. 6 is the structured flowchart according to embodiment of the present invention four-way optical transceiver module;
Fig. 7 is the flow chart of the collocation method of optical transceiver module running parameter according to the embodiment of the present invention; And
Fig. 8 is the structured flowchart of the inking device of optical transceiver module running parameter according to the embodiment of the present invention.
Embodiment
Hereinafter also describe the present invention in detail with reference to accompanying drawing in conjunction with the embodiments.It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.
Fig. 1 is the structured flowchart of the optical transceiver module according to the embodiment of the present invention, as shown in Figure 1, this optical transceiver module comprises: controller 102, comprise the photoelectric conversion unit 104 of at least one road opto-electronic conversion passage and comprise the electrooptic switching element 106 of at least one road electro-optic conversion passage, wherein, controller 102, be connected with electrooptic switching element 106 with photoelectric conversion unit 104, for configuring the running parameter of photoelectric conversion unit 104 and electrooptic switching element 106; Photoelectricity changes and turns unit 104, for carrying out opto-electronic conversion according to running parameter; Electrooptic switching element 106, for carrying out electro-optic conversion according to running parameter.
In embodiments of the present invention, above-mentioned running parameter can include but not limited to following one of at least: operating rate, number of channels and mode of operation, wherein, mode of operation includes but not limited to continuous mode and burst mode.Concrete, the quantity of the opto-electronic conversion passage that the opto-electronic conversion passage that the operating rate of each above-mentioned opto-electronic conversion passage, the mode of operation of each above-mentioned opto-electronic conversion passage, opto-electronic conversion use, opto-electronic conversion use.
In an execution mode of the embodiment of the present invention, controller 102, for the order of response light transceiver module place equipment, configuration effort parameter, wherein, carries the information of running parameter in order.
In an execution mode of the embodiment of the present invention, each opto-electronic conversion passage, comprising: photodetector, for light signal is converted to photoelectric current; Trans-impedance amplifier, is connected with controller with photodetector, can be operated in continuous mode or burst mode, for converting photoelectric current to voltage signal according to running parameter; Limiting amplifier, is connected with trans-impedance amplifier, can be operated in continuous mode or burst mode, for carrying out limited range enlargement process to voltage signal.
In an execution mode of the embodiment of the present invention, each opto-electronic conversion passage can also comprise: electrical dispersion compensation unit, between trans-impedance amplifier and limiting amplifier, continuous mode or described burst mode can be operated in, for carrying out electrical dispersion compensation to voltage signal; Limiting amplifier, also for carrying out limited range enlargement process to the voltage signal after electrical dispersion compensation.
In an execution mode of the embodiment of the present invention, each opto-electronic conversion passage can also comprise: data fan out unit, between trans-impedance amplifier and limiting amplifier, for above-mentioned voltage signal being split into first via signal and the second road signal, wherein, first via signal is the voltage signal of point-to-multipoint burst mode, and the second road signal is the voltage signal of point-to-point continuous mode; Limiting amplifier, is connected with data fan out unit, for carrying out limited range enlargement process to first via signal.
In an execution mode of the embodiment of the present invention, each road electro-optic conversion passage can comprise: laser drive unit, is connected with controller, for converting the electrical signal to current drive signal according to running parameter; Laser, is connected with laser drive unit, for converting current drive signal to light signal.
In an execution mode of the embodiment of the present invention, described in each road, electro-optic conversion passage can also comprise: clock data recovery unit, be connected with the input of laser drive unit, there is bypass effect, for carrying out clock recovery to the described signal of telecommunication of set rate.
Alternatively, laser comprise following one of at least: Distributed Feedback Laser, EML laser.
The equipment at optical transceiver module place can any equipment in EPON, as long as carry out the reception of light signal and send.This equipment can comprise upper layer software (applications) system, and upper layer software (applications) system can send mentioned order to controller, and controller responds the running parameter of this order to photoelectric conversion unit and is configured.
As an example, above-mentioned configuration can be that controller writes command word in a register, and photoelectric conversion unit is when carrying out opto-electronic conversion, this command word is read from register, thus obtain the running parameter of photoelectric conversion unit, certainly, the embodiment of the present invention is not limited to this.
Be described with the optical transceiver module of several example to the embodiment of the present invention below.
As an example, in embodiments of the present invention, the configuration to optical transceiver module is realized by software mode.Therefore, in embodiments of the present invention, the optical transceiver module page of software simulating configuration is adopted to be called software definition optical transceiver module.
Software definition optical transceiver module can comprise: electrooptic switching element, photoelectric conversion unit, microcontroller, optical multiplexer and electrical interface.Optical transceiver module works in PtP or PtMP mode of operation by software merit rating.
Wherein, electrooptic switching element, is converted to light signal for realizing the optical transceiver module signal of telecommunication, and can receiving microcontroller, to do software merit rating to electrooptic switching element be different rates.Electrooptic switching element can comprise one or more electro-optic conversion passage.The laser that one or more passage uses of electrooptic switching element is including but not limited to directly modulation laser, externally modulated laser.
Photoelectric conversion unit, is converted to the signal of telecommunication for realizing optical transceiver module light signal, and is set to different rates continuous mode and burst mode by microcontroller software definition.Photoelectric conversion unit can comprise one or more opto-electronic conversion passage, and the photodetector of one or more passage use of photoelectric conversion unit is including but not limited to PIN type photodetector and avalanche-type APD photodetector.
Microcontroller, for carrying out software definition with the communication of system end upper layer software (applications) to electrooptic switching element, photoelectric conversion unit, point-to-point WDMPON or TWMDPON point-to-multipoint mode of operation can be set to, different operating speed, optical transceiver module service aisle quantity also can be set.
Optical multiplexer, provides optical interface for the conjunction ripple of downlink optical signal that the uplink optical signal received and photoelectric conversion unit exported and partial wave, realizes optical transceiver module and business Fiber connection.
In embodiments of the present invention, by software definition, realize point-to-multipoint burst upstream receiving mode and the switching of point-to-point continuous operation mode; Realize operating rate to arrange, realize the setting of service aisle number.By same port block configuration different working modes, meet different user business, effectively reduce equipment manufacturing cost and development cost.By software definition operating rate, point-to-multipoint and point to point operation pattern, the compatible design arranging service aisle quantity, effectively reduce the system upgrade O&M cost of operator.
As shown in Figure 2, by software definition, optical transceiver module can flexible Application in system architecture as shown in fig. 2.By software definition configurable TWDMPON or PtPWDMPON at different rates framework.
Fig. 3 is the structured flowchart of a kind of optical transceiver module according to the embodiment of the present invention, as shown in Figure 3, comprises one or more electrooptic switching element, photoelectric conversion unit, microcontroller, optical multiplexer and electrical interface.
Electrooptic switching element, is converted to light signal for realizing the optical transceiver module signal of telecommunication, and can receiving microcontroller, to do software merit rating to electrooptic switching element be different rates.Electrooptic switching element can comprise one or more electro-optic conversion passage.The laser that one or more passage uses of electrooptic switching element is including but not limited to directly modulation laser, externally modulated laser.
Photoelectric conversion unit, is converted to the signal of telecommunication for realizing optical transceiver module light signal, and is different rates continuous mode and burst mode by microcontroller flexible configuration.Photoelectric conversion unit can comprise one or more electro-optic conversion passage, and the photodetector of one or more passage use of electrooptic switching element is including but not limited to PIN type photodetector and avalanche-type photodetector.
Microcontroller, for carrying out flexible configuration with the communication of system end upper layer software (applications) to electrooptic switching element, photoelectric conversion unit, can be configured to point-to-point WDMPON and TWDMPON point-to-multipoint mode of operation, can be configured to different operating speed, also configurable optical transceiver module service aisle quantity.
Optical multiplexer, provides optical interface for the conjunction ripple of downlink optical signal that the uplink optical signal received and photoelectric conversion unit exported and partial wave, realizes optical transceiver module and business Fiber connection.
Fig. 4 is the structured flowchart of the single channel optical transceiver module according to the embodiment of the present invention.Below single channel optical transceiver module is as shown in Figure 4 described.
The microcontroller of single channel optical transceiver module is receiving systems soft ware definition command, carries out parameter configuration to optical transceiver module.Comprise and operating rate is set, and mode of operation, mode of operation comprises receiving terminal continuous operation mode or burst mode of operation.And support that up 10Gbps speed carries out burst EDC electrical dispersion compensation.
Electrooptic switching element, after completing microcontroller software order, realizes the signal of telecommunication and is converted to light signal function.10G clock and data recovery functional block has signal bypass functionality, and receiving system end, by the electrical interface signal of telecommunication, judges whether speed is 10Gbps, and then signal exports 10G laser drive unit by clock and data recovery function to again to service signal shaping in this way.As non-10Gbps signal rate, then signal of telecommunication Bypass Clock data recovery unit, directly delivers to laser drive unit by the signal of telecommunication.
10Gbps laser drive unit, receives the signal of telecommunication of clock data recovery unit and is converted into current drive signal, realizes driving 10GEML laser diode current.Driver element selectively operating is in 0-10Gbps wideband pattern any operative speed.
10GEML laser realizes the current drive signal of laser drive unit to be converted to light signal, because this preferred embodiment is EML laser built-in thermoelectric refrigeration control chip (TEC), makes laser works at specified temp and keeps wavelength stability.
TEC control unit provides current drives for the built-in TEC chip of EML laser element and controls feedback unit, ensures TEC temperature stabilization, indirectly ensures that laser wavelength is stablized.
Optical interface, for providing the light signal interface channel of optical transceiver module and optical fiber.This preferred embodiment adopts single fiber bi-directional SC optical interface.
WDM, realizes conjunction ripple and the partial wave of uplink optical signal and downlink optical signal, descending laser firing signals is coupled to optical interface, simultaneously by uplink receiving to light signal export photoelectric conversion unit to.
Photoelectric conversion unit realizes uplink optical signal and converts the signal of telecommunication to, and the signal of telecommunication is sent to electrical interface according to software definition.Photoelectric conversion unit comprises photodetector, 0-10G happens suddenly TIA, RESET leadage circuit, burst EDC, 1:2 data fan out unit, 0-10G continuous mode limiting amplifier (CMLA) and 2.5G/10G burst mode limiting amplifier (BMLA).
The uplink optical signal received is converted into photoelectric current by photodetector, this single channel optical transceiver module preferred embodiment adopts the avalanche photodide (APD type photodetector) being greater than 8.5GHz bandwidth, 0-10Gbps any operative speed can be supported, also can be operated in continuously and burst mode.
0-10G burst trans-impedance amplifier (BMTIA), the photo-signal exported for receiving photodetector changes into differential voltage signal and exports, burst trans-impedance amplifier regulates the voltage signal scope after photoelectric current conversion by selecting transimpedance gain, meet next stage signal processing unit input requirements, 0-10G burst trans-impedance amplifier GN7052 is selected in this preferred embodiment, burst mode can be operated in, also continuous mode can be operated in, microcontroller can control trans-impedance amplifier speed selection function, can be configured to low rate bandwidth mode and two-forty bandwidth mode.
RESET leadage circuit, optical transceiver module is as being configured as TWDMPON mode of operation, what photoelectric conversion unit received is burst, RESET leadage circuit receives notification signal (the RESET control signal that next group bursty data arrives, system board is had to be inputted by optical transceiver module electrical interface), after RESET leadage circuit receives this control signal, the residual signal level of the limiting amplifier of cleaning burst in time input, to guarantee the accurate reception of next group bursty data.Meet system burst timing requirements.The RESET burst leadage circuit of this preferred embodiment adopts High Frequency Analog Switch, and TIA is exported bypass to reference level by analog switch upon the reception of control signals, fast processing residual signal, guarantees the accurate reception of next group bursty data.
Burst electrical dispersion compensation unit (EDC), the differential voltage signal realizing TIA output does electrical dispersion compensation, because directly modulation laser just has chirp, dispersion is produced after high speed long-haul transport, burst electrical dispersion compensation unit in the embodiment of the present invention, can carry out dispersion compensation to up 10Gbps signal, improve the receiving sensitivity performance of optical transceiver module, flexible configuration is different operating speed.
Burst EDC has signal bypass functionality, and directly modulation laser (is less than 10G) at low velocity, and dispersion is less, and optical transceiver module is configured to low rate mode of operation, then the EDC unit that happens suddenly carries out bypass process to signal, exports after only carrying out signal shaping
1:2 data fan out unit, realizes being converted into 2 road differential signal parallel outputs to 1 road differential input signal, and wherein a road exports for connecting the continuous limiting amplifier of 0-10G (CMLA), realizes the point-to-point PtP signal of telecommunication and connects; An other road exports for connecting burst limiting amplifier (BMLA), realizes being connected with the TWDMPON point-to-multipoint PtMP signal of telecommunication.
The continuous limiting amplifier of 0-10G (CMLA), can support 0-10G operating rate, does amplitude limiting processing, export the electrical interface of optical transceiver module to point-to-point PtP Received signal strength, and by electrical interface and system board.
Burst limiting amplifier (BMLA), realize the process of TWDMPON point-to-multipoint PtMP mode of operation burst upstream Received signal strength, such as, under this mode of operation, 2.5G upward signal and 10G upward signal are time division multiplexing (TDM), 2.5G and 10G signal can be received in different time slots, and limited range enlargement process is done to signal export optical transceiver module electrical interface to, and by electrical interface connected system plate, by system board, 2.5G and 10G operating rate signal is isolated to different time-gap.
Electric connector, realizes optical transceiver module and is connected with system board electrical signal.
Fig. 5 is the structured flowchart according to another single channel optical transceiver module of the embodiment of the present invention.Below single channel optical transceiver module is as shown in Figure 5 described.
As shown in Figure 5, comprising: microcontroller, optical interface, wavelength division multiplexer, electrical interface and multi tate electrooptic switching element and multi tate photoelectric conversion unit.
Single channel optical transceiver module microcontroller is receiving system configuration order, to electrooptic switching element, photoelectric conversion unit configuration effort speed.
Electrooptic switching element, after completing microcontroller configuration, realizes the signal of telecommunication and is converted to light signal function.Electrooptic switching element comprises clock data recovery unit, multi tate laser drive unit, multi tate laser.
10G clock and data recovery functional block has signal bypass functionality, and receiving system end, by the electrical interface signal of telecommunication, judges whether speed is 10Gbps, and then signal exports 10G laser drive unit by clock and data recovery function to again to service signal shaping in this way.As non-10Gbps signal rate, then signal of telecommunication Bypass Clock data recovery unit, directly the signal of telecommunication is delivered to multi tate laser drive unit.
Multi tate (0-10Gbps) laser drive unit receives the signal of telecommunication of clock data recovery unit and is converted into current drive signal, realizes driving multi tate laser (0-10Gbps) laser.Output optical signal.Laser drive unit configurable bandwidth arranges function, to decline low bandwidth chahnel in low signal speed, and filter away high frequency noise optimizes optical transceiver module optical signal quality.
Multi tate (0-10Gbps) laser realizes the current drive signal of laser drive unit to be converted to light signal.
Optical interface, for providing the light signal interface channel of optical transceiver module and optical fiber.This preferred embodiment adopts single fiber bi-directional SC optical interface.
Wavelength division multiplexer, realizes conjunction ripple and the partial wave of uplink optical signal and downlink optical signal, descending laser firing signals is coupled to optical interface, simultaneously by uplink receiving to light signal export photoelectric conversion unit to.
Photoelectric conversion unit realizes uplink optical signal and converts the signal of telecommunication to, and the signal of telecommunication is sent to electrical interface according to software merit rating.Photoelectric conversion unit comprises multi tate photodetector, multi tate trans-impedance amplifier and multi tate limiting amplifier.
The uplink optical signal received is converted into photoelectric current by multi tate (0-10Gbps) photodetector, and this preferred embodiment adopts 10Gbps avalanche photodide (APD type photodetector), can support 0-10Gbps operating rate.
Multi tate (0-10Gbps) trans-impedance amplifier, photodetector output photoelectric stream signal will be received and change into differential voltage signal output, trans-impedance amplifier regulates the voltage signal scope after photoelectric current conversion by selecting transimpedance gain, meet next stage signal processing unit input requirements, trans-impedance amplifier can be operated in the arbitrary speed between 0-10Gbps.Select trans-impedance amplifier to can be configured to low rate bandwidth mode and two-forty bandwidth mode in this preferred embodiment, for different software definition signal operating rates, select optimum receiving sensitivity.
Multi tate (0-10Gbps) limiting amplifier, to the analog differential voltage signal of the trans-impedance amplifier process received, does limited range enlargement process and exports digital difference signal and deliver to optical transceiver module electrical interface, and by electrical interface connected system plate.
Electrical interface, realizes optical transceiver module and is connected with system board electrical signal.
Fig. 6 is the structured flowchart according to embodiment of the present invention four-way optical transceiver module, as shown in Figure 6, comprises four road photoelectric conversion units, four road electrooptic switching elements, WDM, microcontroller and electric connector.
Four-way optical transceiver module selects a road or two to four road electro-optic conversion and opto-electronic conversion passage flexibly by software merit rating.Point-to-point PtP or point-to-multipoint PtMP mode of operation can be configured separately to every road converting unit, configuration effort speed simultaneously.
Four-way electrooptic switching element, after completing micro controller unit configuration, realizes N road (N the belongs to 1-4) signal of telecommunication and is converted to light signal function.Comprise four tunnel laser drive unit and No. four lasers.
Laser Driven, drives laser, makes laser output optical signal, and makes laser works at specified temp and keep wavelength stability.Laser can select different output wavelength.WDM carries out wavelength division multiplexing to laser output optical signal, exports the light signal after wavelength division multiplexing.
Electrooptic switching element can use directly modulation laser, also can use externally modulated laser.
Four-way photoelectric conversion unit realizes four road light signals and converts the signal of telecommunication to, is configured to a road or two to four paths work by software flexible.Comprise No. four photodetectors, four road trans-impedance amplifiers, four road electrical dispersion compensation unit and four road limiting amplifiers.
Photodetector is receiving the light signal of optical multiplex unit N road (N belongs to 1-4) different wave length, and just receive N road light signal and be converted to photo-signal, photodetector can use PIN type photodetector, avalanche-type (APD) type photodetector can be used, and support 0-10Gbps operating rate.
Four road trans-impedance amplifiers, the photo-signal exported for receiving No. four photodetectors changes into differential voltage signal and exports, in this preferred embodiment, four-way trans-impedance amplifier selectively operating is at point-to-multipoint burst mode, also continuous point-to-point PtP pattern can be operated in, micro controller unit can be configured trans-impedance amplifier speed, can be configured to low rate bandwidth mode and two-forty bandwidth mode.
Four road EDC electrical dispersion compensation unit, realize the differential voltage signal that trans-impedance amplifier (TIA) exports and do electrical dispersion compensation, because directly modulation laser just has chirp, dispersion is produced after high speed long-haul transport, the design of this preferred embodiment increases EDC electrical dispersion compensation unit, can carry out dispersion compensation to low cost directly modulation uplink optical signal, improve the receiving sensitivity performance of optical transceiver module, can flexible configuration be different operating speed simultaneously.
Four tunnel burst EDC electrical dispersion compensation unit have signal bypass functionality, if the signal chromatic dispersion received is less, optical transceiver module can be configured to bypass operating mode, and trans-impedance amplifier signal directly exports limiting amplifier unit to.
Four road limiting amplifiers, are point-to-point PtP mode of operation and point-to-multipoint burst mode of operation by software merit rating, do amplitude limiting processing, export the electrical interface of optical transceiver module to, and be connected with system board by electrical interface the four road signals of telecommunication.
WDM, realizes conjunction ripple and the partial wave of four road uplink optical signals and four road downlink optical signals, exports four road different wave length downlink optical signal signal couplings to optical interface, exports the uplink optical signal partial wave of four road different wave lengths to photoelectric conversion unit simultaneously.
Electric connector, realizes optical transceiver module and is connected with system board electrical signal.
In embodiments of the present invention, single channel supports point-to-point PtP and point-to-multipoint PtMP mode of operation compatibility of multi-rate optical transceiver module, with the optical transceiver module of four-way flexible configuration number of channels, realize point-to-multipoint continuous operation mode and the switching of point-to-multipoint burst mode of operation by software definition; Different operating speed switches and the configuration of service aisle number.By same port block configuration different operating state, meet different user business, effectively reduce equipment manufacturing cost and development cost.
The embodiment of the present invention additionally provides a kind of collocation method of optical module running parameter.
Fig. 7 is the flow chart of the collocation method of optical module running parameter according to the embodiment of the present invention, and as shown in Figure 7, the method comprising the steps of S702 is to step S704.
Step S702, receives the order of optical transceiver module place equipment, wherein, carries the information of running parameter in mentioned order.
Step S704, configures the running parameter of above-mentioned optical transceiver module according to mentioned order.
The equipment at optical transceiver module place can be any equipment in EPON, as long as carry out the process of light signal.This equipment can comprise upper layer software (applications) system, and upper layer software (applications) system can send mentioned order to controller, and controller responds the running parameter of this order to optical module and is configured.
As an example, above-mentioned configuration can be that controller writes command word in a register, and optical transceiver module is when carrying out opto-electronic conversion, this command word is read from register, thus obtain the running parameter of optical transceiver module, certainly, the embodiment of the present invention is not limited to this.
Alternatively, above-mentioned running parameter comprise following one of at least: the quantity of the opto-electronic conversion passage that the opto-electronic conversion passage that the operating rate of each opto-electronic conversion passage of above-mentioned optical module, the mode of operation of each opto-electronic conversion passage of above-mentioned optical module, opto-electronic conversion use, opto-electronic conversion use.
As an example, mode of operation can comprise point-to-multipoint burst mode and point-to-point continuous mode.The opto-electronic conversion passage used can be which or which above-mentioned opto-electronic conversion passage in position in multiple opto-electronic conversion passage, and the quantity of opto-electronic conversion passage can be use how many opto-electronic conversion passages to carry out opto-electronic conversion.
Alternatively, above-mentioned running parameter comprise following one of at least: the quantity of the electro-optic conversion passage that the electro-optic conversion passage that the operating rate of each electro-optic conversion passage of above-mentioned optical module, the mode of operation of each electro-optic conversion passage of above-mentioned optical module, electro-optic conversion use, electro-optic conversion use.
As an example, mode of operation can comprise point-to-multipoint burst mode and point-to-point continuous mode.The electro-optic conversion passage used can be which or which above-mentioned electro-optic conversion passage in position in multiple electro-optic conversion passage, and the quantity of electro-optic conversion passage can be use how many electro-optic conversion passages to carry out electro-optic conversion.
The embodiment of the present invention additionally provides a kind of inking device of optical module running parameter.
Fig. 8 is the structured flowchart of the inking device of optical transceiver module running parameter according to the embodiment of the present invention, as shown in Figure 8, this device can comprise: receiver module 802, for receiving the order of optical transceiver module place equipment, wherein, the information of running parameter is carried in mentioned order; Configuration module 804, for configuring the running parameter of above-mentioned optical transceiver module according to mentioned order.
The equipment at optical transceiver module place can be any equipment in EPON, as long as carry out the process of light signal.This equipment can comprise upper layer software (applications) system, and upper layer software (applications) system can send mentioned order to controller, and controller responds the running parameter of this order to optical module and is configured.
As an example, above-mentioned configuration can be that controller writes command word in a register, and optical transceiver module is when carrying out opto-electronic conversion, this command word is read from register, thus obtain the running parameter of optical transceiver module, certainly, the embodiment of the present invention is not limited to this.
Alternatively, above-mentioned running parameter comprise following one of at least: the quantity of the opto-electronic conversion passage that the opto-electronic conversion passage that the operating rate of each opto-electronic conversion passage of above-mentioned optical transceiver module, the mode of operation of each opto-electronic conversion passage of above-mentioned optical module, opto-electronic conversion use, opto-electronic conversion use.
As an example, mode of operation can comprise point-to-multipoint burst mode and point-to-point continuous mode.The opto-electronic conversion passage used can be which or which above-mentioned opto-electronic conversion passage in position in multiple opto-electronic conversion passage, and the quantity of opto-electronic conversion passage can be use how many opto-electronic conversion passages to carry out opto-electronic conversion.
Alternatively, above-mentioned running parameter comprise following one of at least: the quantity of the electro-optic conversion passage that the electro-optic conversion passage that the operating rate of each electro-optic conversion passage of above-mentioned optical module, the mode of operation of each electro-optic conversion passage of above-mentioned optical module, electro-optic conversion use, electro-optic conversion use.
As an example, mode of operation can comprise point-to-multipoint burst mode and point-to-point continuous mode.The electro-optic conversion passage used can be which or which above-mentioned electro-optic conversion passage in position in multiple electro-optic conversion passage, and the quantity of electro-optic conversion passage can be use how many electro-optic conversion passages to carry out electro-optic conversion.
As can be seen from the above description, the embodiment of the present invention achieves following technique effect: the running parameter of controller configuration optical module, makes optical module can compatible different scene.In addition, in multichannel situation, the problem that the physical port caused when single channel optical module can also be avoided stacking is too much.
Obviously, those skilled in the art should be understood that, above-mentioned of the present invention each module or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on network that multiple calculation element forms, alternatively, they can realize with the executable program code of calculation element, thus, they can be stored and be performed by calculation element in the storage device, and in some cases, step shown or described by can performing with the order be different from herein, or they are made into each integrated circuit modules respectively, or the multiple module in them or step are made into single integrated circuit module to realize.Like this, the present invention is not restricted to any specific hardware and software combination.
These are only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. an optical transceiver module, is characterized in that, comprising: controller, comprise the photoelectric conversion unit of at least one road opto-electronic conversion passage and comprise the electrooptic switching element of at least one road electro-optic conversion passage, wherein,
Described controller, is connected with described electrooptic switching element with described photoelectric conversion unit, for configuring the running parameter of described photoelectric conversion unit and described electrooptic switching element; Described running parameter comprise following one of at least: operating rate, number of channels and mode of operation, wherein, described mode of operation comprises continuous mode and burst mode;
Described photoelectricity changes and turns unit, for carrying out opto-electronic conversion according to described running parameter;
Described electrooptic switching element, for carrying out electro-optic conversion according to described running parameter.
2. optical transceiver module according to claim 1, is characterized in that, described controller, for responding the order of described optical transceiver module place equipment, configures described running parameter, wherein, carries the information of described running parameter in described order.
3. optical transceiver module according to claim 1, is characterized in that, opto-electronic conversion passage described in each, comprising:
Photodetector, for being converted to photoelectric current by light signal;
Trans-impedance amplifier, is connected with described controller with described photodetector, can be operated in described continuous mode or described burst mode, for converting described photoelectric current to voltage signal according to described running parameter;
Limiting amplifier, is connected with described trans-impedance amplifier, can be operated in described continuous mode or described burst mode, for carrying out limited range enlargement process to described voltage signal.
4. optical transceiver module according to claim 3, is characterized in that,
Opto-electronic conversion passage described in each, also comprises: electrical dispersion compensation unit, between described trans-impedance amplifier and described limiting amplifier, can be operated in described continuous mode or described burst mode, for carrying out electrical dispersion compensation to described voltage signal;
Described limiting amplifier, also for carrying out limited range enlargement process to the described voltage signal after electrical dispersion compensation.
5. the optical transceiver module according to claim 3 or 4, is characterized in that,
Opto-electronic conversion passage described in each, also comprise: data fan out unit, between described trans-impedance amplifier and described limiting amplifier, for described voltage signal being split into first via signal and the second road signal, wherein, described first via signal is the voltage signal of point-to-multipoint burst mode, and described second road signal is the voltage signal of point-to-point continuous mode;
Described limiting amplifier, is connected with described data fan out unit, for carrying out limited range enlargement process to described first via signal.
6. optical transceiver module according to claim 1, is characterized in that, electro-optic conversion passage described in each road, comprising:
Laser drive unit, is connected with described controller, for converting the electrical signal to current drive signal according to described running parameter;
Laser, is connected with described laser drive unit, for converting described current drive signal to light signal.
7. optical transceiver module according to claim 6, is characterized in that, electro-optic conversion passage described in each road, also comprises:
Clock data recovery unit, is connected with the input of described laser drive unit, has bypass effect, for carrying out clock recovery to the described signal of telecommunication of set rate.
8. optical transceiver module according to claim 6, is characterized in that, described laser comprise following one of at least: distributed feed-back Distributed Feedback Laser, Electroabsorption Modulated Laser EML.
9. a collocation method for optical transceiver module running parameter, is characterized in that, comprising:
Receive the order of optical transceiver module place equipment, wherein, in described order, carry the information of running parameter, described running parameter comprise following one of at least: operating rate, number of channels and mode of operation, wherein, described mode of operation comprises continuous mode and burst mode;
The running parameter of optical transceiver module according to described command configuration.
10. an inking device for optical transceiver module running parameter, is characterized in that, comprising:
Receiver module, for receiving the order of optical transceiver module place equipment, wherein, the information of running parameter is carried in described order, described running parameter comprise following one of at least: operating rate, number of channels and mode of operation, wherein, described mode of operation comprises continuous mode and burst mode;
Configuration module, for the running parameter of optical transceiver module according to described command configuration.
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| CN201410318615.9A CN105323008B (en) | 2014-07-04 | 2014-07-04 | The configuration method and device of optical transceiver module and its running parameter |
| PCT/CN2014/087126 WO2015154389A1 (en) | 2014-07-04 | 2014-09-22 | Optical transceiving module and configuration method and device for operating parameter thereof |
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| Publication number | Publication date |
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| WO2015154389A1 (en) | 2015-10-15 |
| CN105323008B (en) | 2019-10-25 |
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