CN103236890A - ONU (optical network unit) intelligent optical transceiver module capable of automatically closing long-emission laser device - Google Patents
ONU (optical network unit) intelligent optical transceiver module capable of automatically closing long-emission laser device Download PDFInfo
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- CN103236890A CN103236890A CN2013101318214A CN201310131821A CN103236890A CN 103236890 A CN103236890 A CN 103236890A CN 2013101318214 A CN2013101318214 A CN 2013101318214A CN 201310131821 A CN201310131821 A CN 201310131821A CN 103236890 A CN103236890 A CN 103236890A
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Abstract
An ONU (optical network unit) intelligent optical transceiver module capable of automatically closing a long-emission laser device comprises an optical receiving unit 1 and an optical transmitting unit 3. The optical receiving unit 1 receives optical signals and outputs high-speed serial data signals to an optical module interface; the high-speed serial data signals are inputted to the optical transmitting unit 3 from the optical module interface, and the optical transmitting unit 3 receives burst control signals outputted by an ONU master chip and transmits the optical signals; and a control unit 2 is further connected onto the optical module interface, is connected with the optical receiving unit1, monitors signal transmitting duration of the optical transmitting unit 3 in real time, and closes the laser device of the optical transmitting unit 3 when the signal transmitting duration of the optical transmitting unit 3 exceeds a preset threshold value, so that transmission of ONU uplink signals is stopped.
Description
Technical field
The present invention relates to a kind of optical transceiver module.
Background technology
At passive optical network (PON, comprise GPON and EPON) in, what optical line terminal (OLT) and a plurality of optical network unit (ONU) adopted is that point is to multi-point communication (being to meet 32 or 64 ONU under the OLT port generally speaking), therefore ONU adopts time division multiplexing mode to the uplink of OLT, when the master chip of an ONU receives indication (being included in OLT in the downlink information of ONU) the transmission data of OLT, just can open its laser and carry out the data transmission, data send to finish must close laser, sends with the data of not disturbing other ONU.So ONU is extremely important at the moment of appointment opening and closing laser according to the indication of OLT, otherwise will cause the paralysis of whole PON network.In actual applications, the ONU of a failure light emission is luminous at the time slot of regulation not according to the indication of OLT, but luminous for a long time (luminous slot time surpasses 1ms, be commonly called as long luminance ONU, also be rogue ONU), then can influence the light signal of all ONU under the same PON interface, cause all other normal ONU all can lose communication and control with OLT, therefore can't judge it is the fault which ONU occurs at the OLT end, even if hand inspection ONU one by one, because ONU mostly is placed in user's family, checking to the doorstep also has a lot of inconvenience.Along with the large tracts of land of PON network is disposed, this type of problem is more and more outstanding, is greatly perplexing Virtual network operator, up till now for extremely also there not being effective solution.Through test with analyze, the reason of finding to cause this type of fault substantially all is that fault has appearred in the optical module of ONU, and the control that can't be controlled by the burst of ONU master chip causes.
Optical transceiver module comprises the sudden two parts that transmit and receive as the chief component among the ONU.Burst transmissions partly is: the signal of telecommunication of importing a constant bit rate is launched the modulated light signal of respective rate through the driving chip processing rear drive semiconductor laser (LD) of inside, its inside has the burst sending controling circuit, accept the burst control signal of ONU master chip output, open and close control by the bias current to laser, realize that laser sends the opening and closing of signal.Because present optical module all is simply to realize electricity/light translation function, can't realize Fault Isolation and control when breaking down.
Summary of the invention
In order to solve the problem luminous out of control (generally showing as luminous for a long time) of existing ONU optical transceiver module, the invention provides a kind of intelligent optical transceiver module of ONU that can close the long hair light laser automatically.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of intelligent optical transceiver module of ONU that can close the long hair light laser automatically, comprise light receiving unit and Optical Transmit Unit, described light receiving unit all is connected with the optical module interface with Optical Transmit Unit, and described intelligent optical transceiver module also comprises in order to realize and to control the control unit of long hair light laser.
Described light receiving unit comprises main amplifier and ROSA assembly, main amplifier adopts limiting amplifier, the ROSA assembly is integrated photodetector, transreactance amplifier, one-level voltage amplifier, accept the light signal strength indicating device, finish signal opto-electronic conversion, amplification and signal strength signal intensity deixis.
Described smooth transmitting element comprises laser modulator and TOSA module, and laser modulator is straight mode driver commonly used, and the TOSA module is that straight mode is annotated optical device.
Described control unit comprises a microprocessor, an analog to digital converter, a memory, a long hair optical controller, a luminescence detector.
In described control unit, luminescence detector is monitored in real time to the transmission light of laser, and under the normal condition, transmitting optical power should be less than-45dBm when laser cut out, and luminous power should be greater than-5dBm when laser was opened.The transmission signal time of opening that just can detect laser by luminescence detector carries out sampled measurements.When general EPON ONU normally moved, burst sent optical signal pulses length generally below 1ms, if this time, illustrates that the long hair optical issue appears in EPONONU greater than 1ms.When GPON ONU normally moved, burst transmission optical signal pulses length generally below 125us, the long hair optical issue occurred if this time exceeds 125us explanation GPON ONU
Further, if the long hair optical issue appears in the ONU optical module, the power supply that the optical module control unit is closed the Laser Modulation driver by the long hair optical controller is closed the luminous of optical module, realized that the ONU that long hair light fault appears in optical module can close the luminous of its optical module automatically, and do not influenced the operate as normal of other ONU.
Further, if the optical module control unit finds that this fault appears in optical module, can also break down by optical module fault indication signal alignment ONU master chip report optical module.
Beneficial effect of the present invention mainly shows: can monitor the long hair light fault of optical transceiver module automatically and close the luminous of fault optical module automatically.This optical transceiver module has well solved the difficult problem that rogue ONU in the present EPON disturbs other operate as normal ONU.
Description of drawings
Fig. 1 is that point is to the PON network configuration block diagram of multiple spot.
Fig. 2 is the theory diagram that can close the intelligent optical transceiver module of ONU of long hair light laser automatically.
Fig. 3 is the structured flowchart that can close the intelligent optical transceiver module of ONU of long hair light laser automatically.
Embodiment
Below in conjunction with accompanying drawing the present invention is further described.With reference to accompanying drawing 1-3
With reference to Fig. 1, in EPON (PON) network, what optical line terminal (OLT) and a plurality of optical network unit (ONU) adopted is that point is to multi-point communication, OLT is to the communication of the descending employing broadcast mode of ONU, ONU adopts time division multiplexing mode to the uplink of OLT, just can open its laser and carry out data and send when an ONU sends data according to the indication of OLT, data send to finish must close laser, sends with the data of not disturbing other ONU.
With reference to Fig. 2, a kind of intelligent optical transceiver module of ONU that can close the long hair light laser automatically comprises light receiving unit 1, light transmitting element 3; Described light is accepted unit 1 and is accepted light signal, to described optical module interface output high-speed serial data signal; Described smooth transmitting element 3 is imported the high-speed serial data signal from the optical module interface, and accepts the burst control signal of ONU master chip output, sends light signal; It is characterized in that: also be connected with a control unit 2 on the described optical module interface, control unit 2 connects light and accepts unit 1, the signal sending duration of 2 pairs of light transmitting elements 3 of described control unit is monitored in real time, when the signal sending duration of light transmitting element 3 surpasses preset threshold value, control unit 2 closes the laser of black out transmitting element 3, stops the transmission of ONU upward signal.
With reference to Fig. 3, described light receiving unit 1 comprises; Main amplifier 11 and ROSA assembly 12; Described smooth transmitting element 3 comprises Laser Modulation driver 31 and TOSA assembly 32; Described control unit 2 comprises microprocessor 21, and described microprocessor 21 is connected with analog to digital converter 22, memory 23, long hair optical controller 24, luminescence detector 25; Described analog to digital converter 22 connects described ROSA assembly 12, and 25 pairs of TOSA assemblies 32 of described luminescence detector are sampled, and obtain the signal of luminous duration, and input microprocessor 21; Microprocessor 21 with luminous duration signal be pre-stored in the memory 23 threshold ratio, when luminous duration signal surpassed threshold value, microprocessor 21 sent the command signal of cutting out Laser Modulation driver 31 to long hair optical controller 24.
Described microprocessor 21 breaks down by optical module fault indication signal alignment ONU master chip report optical module, and the ONU master chip can inquire fault type by communication interface.
Further, described threshold value adopts 1ms for EPON ONU, adopts 125us for GPON ONU.
The described content of this specification embodiment only is enumerating the way of realization of inventive concept; protection scope of the present invention should not be regarded as only limiting to the concrete form that embodiment states, protection scope of the present invention also reach in those skilled in the art conceive according to the present invention the equivalent technologies means that can expect.
Claims (4)
1. the intelligent optical transceiver module of ONU of long hair light laser be can close automatically, light receiving unit (1), light transmitting element (3) comprised; Described light is accepted unit (1) and is accepted light signal, to described optical module interface output high-speed serial data signal; Described smooth transmitting element (3) is imported the high-speed serial data signal from the optical module interface, and accepts the burst control signal of ONU master chip output, sends light signal; It is characterized in that: also be connected with a control unit (2) on the described optical module interface, control unit (2) connects light and accepts unit (1), described control unit (2) is monitored in real time to the signal sending duration of light transmitting element (3), when the signal sending duration of light transmitting element (3) surpasses preset threshold value, control unit (2) closes the laser of black out transmitting element (3), stops the transmission of ONU upward signal.
2. optical transceiver module as claimed in claim 1, it is characterized in that: described light receiving unit (1) comprises; Main amplifier (11) and ROSA assembly (12); Described smooth transmitting element comprises Laser Modulation driver (31) and TOSA assembly; Described control unit (2) comprises microprocessor (21), and described microprocessor (21) is connected with analog to digital converter (22), memory (23), long hair optical controller (24), luminescence detector (25); Described analog to digital converter (22) connects described ROSA assembly (12), and described luminescence detector (25) is sampled to TOSA assembly (32), obtains the signal of luminous duration, and input microprocessor (21); Microprocessor (21) is with luminous duration signal and be pre-stored in the interior threshold ratio of memory (23), when luminous duration signal surpassed threshold value, microprocessor (21) sent the command signal of cutting out Laser Modulation driver (31) to long hair optical controller (24).
3. optical transceiver module as claimed in claim 2 is characterized in that: described microprocessor (21) breaks down by optical module fault indication signal alignment ONU master chip report optical module, and the ONU master chip can inquire fault type by communication interface.
4. optical transceiver module as claimed in claim 3 is characterized in that: described threshold value adopts 1ms for EPON ONU, adopts 125us for GPON ONU.
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| CN2013101318214A CN103236890A (en) | 2013-04-15 | 2013-04-15 | ONU (optical network unit) intelligent optical transceiver module capable of automatically closing long-emission laser device |
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| CN2013101318214A CN103236890A (en) | 2013-04-15 | 2013-04-15 | ONU (optical network unit) intelligent optical transceiver module capable of automatically closing long-emission laser device |
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Cited By (6)
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| CN104320184A (en) * | 2014-10-16 | 2015-01-28 | 武汉电信器件有限公司 | High-speed optical module for fiber channel |
| CN104348556A (en) * | 2013-08-08 | 2015-02-11 | 杨泽清 | Main node circuit for plastic optical fiber communication |
| CN104348549A (en) * | 2013-08-08 | 2015-02-11 | 杨泽清 | Slave node circuit for plastic optical fiber communication |
| CN105306138A (en) * | 2014-06-26 | 2016-02-03 | ***通信集团公司 | Detection and processing method and device for optical network unit (ONU) and ONU |
| CN106374999A (en) * | 2015-07-22 | 2017-02-01 | 鸿富锦精密工业（深圳）有限公司 | Optical network unit (ONU) and abnormity overtime luminescence detection method thereof |
| CN109547100A (en) * | 2018-12-05 | 2019-03-29 | 广州芯德通信科技股份有限公司 | A kind of optical power enhancement device and method forcibly closing abnormal fibre-optic terminus |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104348556A (en) * | 2013-08-08 | 2015-02-11 | 杨泽清 | Main node circuit for plastic optical fiber communication |
| CN104348549A (en) * | 2013-08-08 | 2015-02-11 | 杨泽清 | Slave node circuit for plastic optical fiber communication |
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| CN106374999A (en) * | 2015-07-22 | 2017-02-01 | 鸿富锦精密工业（深圳）有限公司 | Optical network unit (ONU) and abnormity overtime luminescence detection method thereof |
| CN106374999B (en) * | 2015-07-22 | 2019-06-21 | 鸿富锦精密工业（深圳）有限公司 | Optical network unit and its abnormal overtime luminous detection method |
| CN109547100A (en) * | 2018-12-05 | 2019-03-29 | 广州芯德通信科技股份有限公司 | A kind of optical power enhancement device and method forcibly closing abnormal fibre-optic terminus |
| CN109547100B (en) * | 2018-12-05 | 2021-07-20 | 广州芯德通信科技股份有限公司 | Optical power enhancing device and method for forcibly closing abnormal optical fiber terminal |
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Application publication date: 20130807 |