CN102917283B - Optical network unit and optical module for optical network unit - Google Patents
Optical network unit and optical module for optical network unit Download PDFInfo
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- CN102917283B CN102917283B CN201210389645.XA CN201210389645A CN102917283B CN 102917283 B CN102917283 B CN 102917283B CN 201210389645 A CN201210389645 A CN 201210389645A CN 102917283 B CN102917283 B CN 102917283B
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Abstract
The invention discloses a kind of optical network unit and optical module for optical network unit, described optical module comprises: a CDR device, for receiving the signal of telecommunication that ONU system equipment sends, and exports after integer; Laser emission element, it comprises: laser and drive circuit thereof; Described drive circuit launches uplink optical signal according to the signal of telecommunication drive laser received after receiving the signal of telecommunication of a CDR device output; Laser pick-off unit, for receiving downlink optical signal, the downlink optical signal according to receiving exports the corresponding signal of telecommunication; 2nd CDR device, for receiving the signal of telecommunication that laser pick-off unit exports, and carrying out integer, being sent by the signal of telecommunication after integer to described ONU system equipment.Owing to adopting CDR device to carry out shaping Recovery processing to the signal of telecommunication that ONU system equipment sends, improve the quality of the signal of telecommunication of the drive circuit being input to laser, thus improve the transmission rate of the uplink optical signal of optical module for optical network unit.
Description
Technical field
The present invention relates to Fibre Optical Communication Technology, particularly relate to a kind of optical network unit and optical module for optical network unit.
Background technology
Current domestic market and international market, the optical fiber communication direction of merging with multiple business with a large bandwidth and at a high rate has started application; In numerous solutions, the appearance of fiber to the home (FTTH) is just considered to the ultimate solution of broadband access.
FTTH network usually as shown in Figure 1, the OLT(Optical Line Terminal of central office, optical line terminal) by ODN(light feeder network) and POS(Passive Optical Splitter, passive optical splitters) be connected, POS is usually referred to as Splitter(optical splitter), generally have 2N to divide equally port, if the light intensity of its uplink port input is 1, then the light intensity that its each downlink port exports is 1/N.For a FTTH network, be generally that 1 OLT is placed on telecommunication center office, then pass through optical splitter, general is at least 1 point 32, or 1 point 64 even 1 point 128, namely 1 OLT is with 32 or 64 or 128 ONU(Optical Network Unit, optical network unit) optical module.Each ONU comprises an ONU optical module and an ONU system equipment, ONU system equipment is connected with ONU optical module, ONU system equipment is connected with the ustomer premises access equipment in family or in office, in order to receive the signal of telecommunication that ustomer premises access equipment sends, be sent to OLT in the upstream direction after being converted to light signal by ONU optical module, and the light signal that ONU optical module receives is converted to the receivable signal of telecommunication of ustomer premises access equipment and sends to ustomer premises access equipment.
But along with the lifting of network rate, when ONU optical module carries out more than 10,000,000,000 speed rates, signal quality will obviously decline; In other words, the transmission rate of current ONU optical module can not reach more than 10,000,000,000 or 10,000,000,000.
Summary of the invention
The embodiment provides a kind of optical network unit and optical module for optical network unit, in order to improve the transmission rate of optical module for optical network unit.
According to an aspect of the present invention, provide a kind of optical module for optical network unit, comprising:
One CDR device, for receiving the signal of telecommunication that optical network unit ONU system equipment sends, and exports after carrying out integer to the signal of telecommunication received;
Laser emission element, it comprises: laser and drive circuit thereof; Described drive circuit drives described laser to launch uplink optical signal according to the signal of telecommunication received after receiving the signal of telecommunication of a CDR device output;
Laser pick-off unit, for receiving downlink optical signal, the downlink optical signal according to receiving exports the corresponding signal of telecommunication;
2nd CDR device, for receiving the signal of telecommunication that described laser pick-off unit exports, and carrying out integer to the signal of telecommunication received, being sent by the signal of telecommunication after integer to described ONU system equipment.
Preferably, described optical module also comprises:
MCU unit, for after the monitoring parameter of intensity obtaining the light signal that laser is launched, compares the monitoring parameter of acquisition and the desired value preset; The output of described drive circuit adjustment bias current is controlled according to comparison result; And
Described MCU unit, also for after acquisition current temperature value, according to the corresponding relation of the temperature recorded in compensation meter and modulated current, controls the modulated current that the output of described drive circuit is corresponding with Current Temperatures.
Further, described MCU unit is also for configuring the equalizer and crosspoint that adjust described amplitude limiting amplifier circuit.
Described MCU unit is also for being configured the equalizer in a CDR device, phase place, bandwidth of phase lock loop parameter; And
Described MCU unit is also for being configured the equalizer in the 2nd CDR device, bandwidth of phase lock loop, CDR sampling phase, pre-emphasis parameters.
Preferably, described optical module adopts small plug-pin encapsulation; And
The contact pin of described optical module is welded in described ONU system equipment.
According to another aspect of the present invention, additionally provide a kind of optical network unit, comprising: ONU system equipment and ONU optical module; Wherein, described ONU optical module comprises:
One CDR device, for receiving the signal of telecommunication that optical network unit ONU system equipment sends, and exports after carrying out integer to the signal of telecommunication received;
Laser emission element, it comprises: laser and drive circuit thereof; Described drive circuit drives described laser to launch uplink optical signal according to the signal of telecommunication received after receiving the signal of telecommunication of a CDR device output;
Laser pick-off unit, for receiving downlink optical signal, the downlink optical signal according to receiving exports the corresponding signal of telecommunication;
2nd CDR device, for receiving the signal of telecommunication that described laser pick-off unit exports, and carrying out integer to the signal of telecommunication received, being sent by the signal of telecommunication after integer to described ONU system equipment.
Further, described ONU optical module also comprises:
MCU unit, for after the monitoring parameter of intensity obtaining the light signal that laser is launched, compares the monitoring parameter of acquisition and the desired value preset; The output of described drive circuit adjustment bias current is controlled according to comparison result; And
Described MCU unit, also for after acquisition current temperature value, according to the corresponding relation of the temperature recorded in compensation meter and modulated current, controls the modulated current that the output of described drive circuit is corresponding with Current Temperatures.
Further, described MCU unit is also for configuring the equalizer and crosspoint that adjust described amplitude limiting amplifier circuit.
Described MCU unit is also for being configured the equalizer in a CDR device, phase place, bandwidth of phase lock loop parameter; And
Described MCU unit is also for being configured the equalizer in the 2nd CDR device, bandwidth of phase lock loop, CDR sampling phase, pre-emphasis parameters.
In the optical module for optical network unit that the embodiment of the present invention provides, owing to adopting CDR device, shaping Recovery processing is carried out to the signal of telecommunication that ONU system equipment sends, improve the quality of the signal of telecommunication of the drive circuit being input to laser, eliminate the distorted modulation of drive circuit to laser, thus improve the transmission quality of light signal in optical-fibre channel, make the laser emission element of optical module for optical network unit still have higher signal quality when launching the light signal of higher rate, thus improve the transmission rate of the uplink optical signal of optical module for optical network unit;
Correspondingly, the receiving terminal of optical module for optical network unit, the signal of telecommunication that laser pick-off unit exports is also through the integer of CDR device, thus compensate for broadening and the distortion of the signal caused due to long fine dispersion and loss, optimize and improve the quality of the signal of telecommunication changed through optical fiber receive module and amplitude limiting amplifier circuit, improve the sensitivity of receiving terminal, when light signal for higher rate transmission is converted to the signal of telecommunication, there is higher reliability, namely, optical module for optical network unit can to receive the downlink optical signal of higher rate, improve the transmission rate of the downlink optical signal of optical module for optical network unit.
Further, ONU optical module adopts SFF light module package shell, thus can strengthen shock resistance, and improves the quality of the signal transmitted between ONU optical module and ONU system equipment; The contact pin of ONU optical module is welded on ONU system equipment, increases the reliability of Signal transmissions; Avoid and cause the distortion of connector because of variations in temperature and the transmission affecting signal.
Accompanying drawing explanation
Fig. 1 is the FTTH network diagram of prior art;
Fig. 2 is the optical network unit of the embodiment of the present invention and the internal circuit schematic diagram of ONU optical module;
Fig. 3 is the laser emission element internal circuit schematic diagram of the embodiment of the present invention;
Fig. 4 is the eye pattern of the uplink optical signal that the laser emission element of prior art is launched;
Fig. 5 is the eye pattern of the uplink optical signal that the laser emission element of the embodiment of the present invention is launched;
Fig. 6 is the laser pick-off unit internal circuit schematic diagram of the embodiment of the present invention;
Fig. 7 is that the SFF of the optical module for optical network unit of the embodiment of the present invention encapsulates schematic diagram.
Embodiment
For making object of the present invention, technical scheme and advantage clearly understand, enumerate preferred embodiment referring to accompanying drawing, the present invention is described in more detail.But it should be noted that, the many details listed in specification are only used to make reader to have a thorough understanding, even if do not have these specific details also can realize these aspects of the present invention to one or more aspect of the present invention.
The term such as " module " used in this application, " system " is intended to comprise the entity relevant to computer, such as but not limited to hardware, firmware, combination thereof, software or executory software.Such as, module can be, but be not limited in: the thread of the process that processor runs, processor, object, executable program, execution, program and/or computer.
The ONU optical module of the present inventor to prior art is analyzed, find usually to adopt pluggable mode to be connected between ONU optical module with ONU system equipment in prior art, the signal of telecommunication to be sent to the discontinuity that may occur Signal transmissions the process of ONU optical module from ONU system equipment through contact pin, thus causes the signal of telecommunication being transferred to ONU optical module to occur loss and distortion; After having occurred that the signal of telecommunication of loss and distortion carries out light signal conversion, the signal quality of up light signal also can have been had a strong impact on, thus limits the transmission rate of ONU optical module.
Based on the analysis of the above-mentioned ONU optical module to prior art, in technical scheme of the present invention, CDR(clock and data recovery is increased in ONU optical module) device, after first the signal of telecommunication sent from ONU system equipment being carried out shaping Recovery processing, carry out light signal conversion again, thus the signal quality under high rate data transmission can be ensured; Also the object improving ONU optical module transmission rate is just reached.
The technical scheme of the embodiment of the present invention is described in detail below in conjunction with accompanying drawing.The optical network unit ONU of the embodiment of the present invention, as shown in Figure 2, comprising: ONU optical module 201, ONU system equipment 202.
Wherein, ONU optical module 201 comprises: laser emission element 301, laser pick-off unit 302, MCU(Microprogrammed Control Unit, microprogram control unit) unit 303, a CDR device 304, the 2nd CDR device 305.
The signal of telecommunication that one CDR device 304 sends in order to receive ONU system equipment 202, and export after integer is carried out to the signal of telecommunication received; The signal of telecommunication that ONU system equipment 202 sends is generally differential electric signal, and the signal of telecommunication exported after CDR device 304 integer is still differential electric signal.
Laser emission element 301 is connected with a CDR device 304, in order to receive the signal of telecommunication through integer that a CDR device 304 exports, and according to receive the signal of telecommunication launch uplink optical signal, uplink optical signal through be coupled laggard enter optical fiber, after POS, be transferred to OLT.
Particularly, the internal circuit of laser emission element 301 as shown in Figure 3, comprising: laser and drive circuit thereof.The drive circuit of laser emission element 301 launches the laser of specific wavelength as uplink optical signal according to the laser light emitting light source in the signal of telecommunication drive laser received after receiving the signal of telecommunication that a CDR device 304 exports.
Because the signal of telecommunication that sends from ONU system equipment 202 is through the integer of a CDR device 304, be provided with better signal quality, therefore, after making laser emission element 301 signal of telecommunication of more high transfer rate can be converted to light signal, ensure that the light signal after conversion has higher signal quality.One CDR device 304 to send over from ONU system equipment 202, through board transmission the signal of telecommunication carried out the integer of loss and distortion, eliminate the distorted modulation of driving chip to laser, thus improve the transmission quality of light signal in optical-fibre channel, add the transmission range of light signal in optical-fibre channel.
The eye pattern of the uplink optical signal that the laser emission element that Fig. 4 shows the ONU optical module of prior art is launched; The eye pattern of the uplink optical signal that the laser emission element 301 that Fig. 5 shows the ONU optical module 201 of the embodiment of the present invention is launched.As can be seen from the contrast of Fig. 4 and Fig. 5, after a CDR device 304 carries out signal of telecommunication integer, the quality of the light signal that laser emission element is launched is improved greatly, thus make laser emission element can launch the light signal of higher rate, reach the object improving ONU optical module transmission rate.
The downlink optical signal that laser pick-off unit 302 sends in order to receive OLT, the downlink optical signal according to receiving exports the corresponding signal of telecommunication.
Particularly, laser pick-off unit 302 as shown in Figure 6, comprising: optical fiber receive module and amplitude limiting amplifier circuit; Optical fiber receive module generally includes: photodiode, trans-impedance amplifier TIA.Photodiode exports corresponding response current and then exports corresponding differential electric signal to TIA, TIA after the downlink optical signal detecting OLT transmission; This differential signal is sent to amplitude limiting amplifier circuit, and this differential signal is carried out limited range enlargement by amplitude limiting amplifier circuit, exports the corresponding signal of telecommunication.The signal of telecommunication that amplitude limiting amplifier circuit exports is generally differential electric signal.
2nd CDR device 305 is connected with laser pick-off unit 302, in order to receive the signal of telecommunication that laser pick-off unit 302 exports, and carries out integer to the signal of telecommunication received, is sent by the signal of telecommunication after integer to ONU system equipment 202.In fact, downlink optical signal, after the Optical Fiber Transmission of long-distance, often has larger loss; After downlink optical signal is converted into the signal of telecommunication by laser pick-off unit 302, the quality of the signal of telecommunication after conversion also can be subject to corresponding impact, ONU system equipment 202 is re-send to after carrying out integer after the telecommunications that 2nd CDR device 305 pairs laser pick-off unit 302 exports, processed by ONU system equipment 202, the speed of the downlink optical signal can avoid error code to a greater degree, lifting ONU optical module 201 can receive, processing.2nd CDR device 305 compensate for broadening and the distortion of the signal caused due to long fine dispersion and loss, optimizes and improves the quality of the signal of telecommunication changed through optical fiber receive module and amplitude limiting amplifier circuit, improve the sensitivity of receiving terminal.
Mainly comprise MCU chip in MCU unit 303, realize following function by MCU chip:
MCU unit 303 can be communicated with drive circuit by iic bus or other universal serial bus or parallel bus, in order to control drive circuit, or the parameter of configuration driven circuit, realize the digital supervision to laser emission element 301 and controlling functions;
MCU unit 303 also can be communicated with amplitude limiting amplifier circuit by iic bus or other universal serial bus or parallel bus, in order to control amplitude limiting amplifier circuit, or the parameter of configuration amplitude limiting amplifier circuit, realize the digital supervision to laser pick-off unit 302 and controlling functions;
MCU unit 303 is by the control to drive circuit, and the uplink optical signal that laser emission element 301 is launched has higher quality.
Particularly, laser launches uplink optical signal backlight to photodetection diode, and MCU unit 303 detects the response current of photodetection diode generation by peripheral circuit, thus gets the monitoring parameter of the intensity of the light signal that laser is launched.The monitoring parameter of acquisition and the desired value preset, after the monitoring parameter of intensity obtaining the light signal that laser is launched, are compared by MCU unit 303; Control the output of drive circuit adjustment bias current according to comparison result: if monitoring parameter is less than desired value, MCU unit 303 controls the output that drive circuit increases bias current DA, thus the intensity of the light signal launched by laser increases; If monitoring parameter is greater than desired value, MCU unit 303 controls the output that drive circuit reduces bias current DA, and the intensity of the light signal launched by laser reduces; So just can ensure that transmitting terminal exports the light signal of an intensity constant, ensure that the uplink optical signal that laser emission element 301 is launched has higher quality.
Further, the compensation meter of the corresponding relation that have recorded temperature and modulated current is previously stored with in MCU unit 303, after acquisition current temperature value, MCU unit 303 is according to the corresponding relation of the temperature recorded in compensation meter and modulated current, control drive circuit and export the modulated current corresponding with Current Temperatures, thus ensure that the extinction ratio of optical module keeps basicly stable under condition of different temperatures, ensure that the uplink optical signal that laser emission element 301 is launched has higher quality.
MCU unit 303 is by the control to amplitude limiting amplifier circuit, and the signal of telecommunication that laser pick-off unit 302 is exported has higher quality.Particularly, MCU unit 303 adjusts equalizer and the crosspoint of amplitude limiting amplifier circuit by configuration, realizes the compensation of the distortion to loss of signal, and make the shake of the signal of telecommunication exported minimum, crosspoint reaches 50% of standard.
In addition, MCU unit 303 also can be connected with a CDR device 304, in order to control a CDR device 304.Particularly, MCU unit 303 by being configured the parameter such as equalizer, phase place, bandwidth of phase lock loop in a CDR device 304, thus optimizes jitter toleration and the bandwidth of operation of optical module.
MCU unit 303 also can be connected with the 2nd CDR device 305, controls the 2nd CDR device 305.Particularly, MCU unit 303, by being configured parameters such as the equalizer in the 2nd CDR device 305, bandwidth of phase lock loop, CDR sampling phase, preemphasis, optimizes the input jitter tolerance of optical module, and the complete shaping realizing signal quality recovers.
Preferably, above-mentioned ONU optical module 201 can adopt SFF(small plug-pin as shown in Figure 7) light module package shell; In order to strengthen shock resistance, and improving the quality of the signal transmitted between ONU optical module and ONU system equipment, can the contact pin of ONU optical module is welded on ONU system equipment, increase the reliability of Signal transmissions; Avoid and cause the distortion of connector because of variations in temperature and the transmission affecting signal.
In the optical module for optical network unit that the embodiment of the present invention provides, owing to adopting CDR device, shaping Recovery processing is carried out to the signal of telecommunication that ONU system equipment sends, improve the quality of the signal of telecommunication of the drive circuit being input to laser, eliminate the distorted modulation of drive circuit to laser, thus improve the transmission quality of light signal in optical-fibre channel, make the laser emission element of optical module for optical network unit still have higher signal quality when launching the light signal of higher rate, thus improve the transmission rate of the uplink optical signal of optical module for optical network unit;
Correspondingly, the receiving terminal of optical module for optical network unit, the signal of telecommunication that laser pick-off unit exports is also through the integer of CDR device, thus compensate for broadening and the distortion of the signal caused due to long fine dispersion and loss, optimize and improve the quality of the signal of telecommunication changed through optical fiber receive module and amplitude limiting amplifier circuit, improve the sensitivity of receiving terminal, when light signal for higher rate transmission is converted to the signal of telecommunication, there is higher reliability, namely, optical module for optical network unit can to receive the downlink optical signal of higher rate, improve the transmission rate of the downlink optical signal of optical module for optical network unit.
Further, ONU optical module adopts SFF light module package shell, thus can strengthen shock resistance, and improves the quality of the signal transmitted between ONU optical module and ONU system equipment; The contact pin of ONU optical module is welded on ONU system equipment, increases the reliability of Signal transmissions; Avoid and cause the distortion of connector because of variations in temperature and the transmission affecting signal.
One of ordinary skill in the art will appreciate that all or part of step realized in above-described embodiment method is that the hardware that can carry out instruction relevant by program has come, this program can be stored in a computer read/write memory medium, as: ROM/RAM, magnetic disc, CD etc.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (8)
1. an optical module for optical network unit, comprising:
One CDR device, for receiving the signal of telecommunication that optical network unit ONU system equipment sends, and exports after carrying out integer to the signal of telecommunication received;
Laser emission element, it comprises: laser and drive circuit thereof; Described drive circuit drives described laser to launch uplink optical signal according to the signal of telecommunication received after receiving the signal of telecommunication of a CDR device output;
Laser pick-off unit, for receiving downlink optical signal, the downlink optical signal according to receiving exports the corresponding signal of telecommunication;
2nd CDR device, for receiving the signal of telecommunication that described laser pick-off unit exports, and carrying out integer to the signal of telecommunication received, being sent by the signal of telecommunication after integer to described ONU system equipment;
Wherein, described optical module adopts small plug-pin encapsulation, and the contact pin of described optical module is welded in described ONU system equipment.
2. optical module as claimed in claim 1, is characterized in that, also comprise:
MCU unit, for after the monitoring parameter of intensity obtaining the light signal that laser is launched, compares the monitoring parameter of acquisition and the desired value preset; The output of described drive circuit adjustment bias current is controlled according to comparison result; And
Described MCU unit, also for after acquisition current temperature value, according to the corresponding relation of the temperature recorded in compensation meter and modulated current, controls the modulated current that the output of described drive circuit is corresponding with Current Temperatures.
3. optical module as claimed in claim 2, it is characterized in that, described laser pick-off unit comprises optical fiber receive module and amplitude limiting amplifier circuit, and described optical fiber receive module carries out limited range enlargement in response to descending light output differential signal to described amplitude limiting amplifier circuit;
Described MCU unit is also for configuring the equalizer and crosspoint that adjust described amplitude limiting amplifier circuit.
4. optical module as claimed in claim 3, is characterized in that,
Described MCU unit is also for being configured the equalizer in a CDR device, phase place, bandwidth of phase lock loop parameter; And
Described MCU unit is also for being configured the equalizer in the 2nd CDR device, bandwidth of phase lock loop, CDR sampling phase, pre-emphasis parameters.
5. an optical network unit, comprising: ONU system equipment and ONU optical module; Wherein, described ONU optical module comprises:
One CDR device, for receiving the signal of telecommunication that optical network unit ONU system equipment sends, and exports after carrying out integer to the signal of telecommunication received;
Laser emission element, it comprises: laser and drive circuit thereof; Described drive circuit drives described laser to launch uplink optical signal according to the signal of telecommunication received after receiving the signal of telecommunication of a CDR device output;
Laser pick-off unit, for receiving downlink optical signal, the downlink optical signal according to receiving exports the corresponding signal of telecommunication;
2nd CDR device, for receiving the signal of telecommunication that described laser pick-off unit exports, and carrying out integer to the signal of telecommunication received, being sent by the signal of telecommunication after integer to described ONU system equipment;
Wherein, described optical module adopts small plug-pin encapsulation, and the contact pin of described optical module is welded in described ONU system equipment.
6. optical network unit as claimed in claim 5, it is characterized in that, described ONU optical module also comprises:
MCU unit, for after the monitoring parameter of intensity obtaining the light signal that laser is launched, compares the monitoring parameter of acquisition and the desired value preset; The output of described drive circuit adjustment bias current is controlled according to comparison result; And
Described MCU unit, also for after acquisition current temperature value, according to the corresponding relation of the temperature recorded in compensation meter and modulated current, controls the modulated current that the output of described drive circuit is corresponding with Current Temperatures.
7. optical network unit as claimed in claim 6, it is characterized in that, described laser pick-off unit comprises optical fiber receive module and amplitude limiting amplifier circuit, and described optical fiber receive module carries out limited range enlargement in response to descending light output differential signal to described amplitude limiting amplifier circuit;
Described MCU unit is also for configuring the equalizer and crosspoint that adjust described amplitude limiting amplifier circuit.
8. optical network unit as claimed in claim 7, is characterized in that,
Described MCU unit is also for being configured the equalizer in a CDR device, phase place, bandwidth of phase lock loop parameter; And
Described MCU unit is also for being configured the equalizer in the 2nd CDR device, bandwidth of phase lock loop, CDR sampling phase, pre-emphasis parameters.
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| CN103152103A (en) * | 2013-02-19 | 2013-06-12 | 青岛海信宽带多媒体技术有限公司 | Optical module and adaptive regulation method for rate mode of clock and data recovery (CDR) chip of optical module |
| CN104144018A (en) * | 2013-05-10 | 2014-11-12 | 中兴通讯股份有限公司 | Optical receiving device and method and optical receiving and emitting integrated module |
| CN104954073B (en) * | 2014-04-04 | 2017-12-12 | 贵州电网公司六盘水供电局 | A kind of built-in ONU GEPON light relay equipments |
| EP2999146B1 (en) * | 2014-09-16 | 2018-08-08 | Cosemi Technologies Inc. | Method for improving signal quality of a digital signal being processed in a linear device and apparatus using the same |
| CN105812064B (en) * | 2016-03-29 | 2018-06-08 | 青岛海信宽带多媒体技术有限公司 | A kind of optical module control method, optical module and optical communication terminal |
| CN111224718B (en) * | 2018-11-23 | 2023-06-20 | 阿里巴巴集团控股有限公司 | Optical module and optical module signal processing method |
| CN109617608A (en) * | 2018-12-25 | 2019-04-12 | 武汉恒泰通技术有限公司 | A kind of 5G optical module control system and control method |
| CN112968732B (en) * | 2019-12-13 | 2022-07-29 | 海思光电子有限公司 | Photoelectric signal converter and network interaction equipment |
| CN114785413A (en) * | 2022-03-30 | 2022-07-22 | 山东华云光电技术有限公司 | Optical module with automatic adjustment balanced gain circuit |
| CN115001523B (en) * | 2022-05-25 | 2023-07-07 | 成都亿芯源半导体科技有限公司 | 10G rate OLT end receiving and transmitting integrated chip based on EPON and EML |
| CN115441953B (en) * | 2022-08-31 | 2023-06-16 | 厦门亿芯源半导体科技有限公司 | Optical transmitting chip based on OTN transmission technology |
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