CN104579490B - A kind of highly integrated OLT optical modules - Google Patents

Abstract

The present invention is applied to optical communication field, a kind of highly integrated OLT optical modules, including pluggable electric connector, optical-electrical converter, data driver, data amplifier, microprocessor, sampling holder, intensity detector, memory, analog-digital converter, signal selector, detection clock source are provided.The present invention realizes the function that the optical distribution network line quality connected to OLT optical modules is detected, and to specifying the function of each up light bag intensity real-time detection in the time period.In a preferred approach, by to a series of integrated designs of OLT optical module internal heights, make OLT optical modules still compatible with the holding of conventional OLT system while test function is increased, so as to enrich the means of PON system operation maintenance, reduce the O＆M cost of equipment vendor, operator.

Description

A kind of highly integrated OLT optical modules

Technical field

The invention belongs to technical field of photo communication, more particularly to a kind of highly integrated OLT optical modules.

Background technology

With the development of Internet technology, PON (EPON) networks are used as a kind of high speed, economic access network skill Art, has been developed EPON (Ethernet passive optical network), GPON (gigabit passive optical network), 10GEPON (10 gigabit ether Net EPON), XGPON (10 gigabit passive optical network) etc., be used widely.PON is main by positioned at local side OLT (optical line terminal), multiple ONU (optical network unit) positioned at client and connect the ODN (optical distribution networks of OLT and ONU Network) composition.The characteristics of due to PON technologies, the fault rate of ODN and ONU is higher, and is not easy to the O＆M technical staff in computer room point Analysis positioning, the detection technique of existing OLT optical modules is only capable of the average light power for realizing detecting some registered ONU, to certain The light bag intensity and its time relationship of each ONU cannot be detected in time period, and ODN line qualities cannot also be detected, cause PON The reduction of network availability and maintenance time, maintenance cost rise.Existing SFP (Small Form-factor Pluggable, it is small Encapsulation hot plug) functional block diagram of OLT optical modules is encapsulated as shown in figure 1, including pluggable electric connector, data driver, number According to amplifier, microprocessor, sampling holder, optical-electrical converter.OLT system is connect by the TRIGGER of pluggable electric connector Mouthful, the trigger signal that certain registered ONU light bag will be directed on the time is delivered to inside optical module, and triggering microprocessor and sampling are protected Holder works, and sampling holder carries out average light power numerical sample to the signal from optical-electrical converter data receiver interface, And be converted into electric signal and kept for a period of time, the sampled voltage that microprocessor will be maintained within the retention time is quantized into numeral Signal, microprocessor calculates the average optical power value of tested ONU light bag by special algorithm, and subsequent system can be by pluggable The measurement result that the I2C interfaces of electric connector will be stored in microprocessor reads.In addition, existing OLT optical modules are to ODN Other running parameters of line quality and ONU do not have detection means.

The current OLT optical modules for largely using generally are encapsulated using SFP, and SFP encapsulation has small volume, port density high Advantage, but internal compact encapsulation design also brings the shortcoming for being difficult to integrated more multicomponent device.Existing SFP encapsulates OLT optical modes As shown in Figure 2 and Figure 3, optical module structure includes SFP bases, SFP outer covers, SC grabs, opto-electronic conversion to the internal structure schematic diagram of block Device, main PCB (printed circuit board), sub- PCB, row's needle connector, data transmitting soft ribbons, data receiver soft ribbons.SFP bases and SFP Outer cover is used to surround and fixing internal structure, and SC grabs are used to position opto-electric connector, and usual pluggable electric connector, data are driven Dynamic device and data amplifier are installed on main PCB, and because main PCB free space is extremely limited, the component of other parts cannot be complete Portion is arranged on main PCB, and a part of component need to be installed on sub- PCB, is connected by the row's of welding pin between main PCB and sub- PCB The mode for connecing device is connected.Data transmitting soft ribbons are used to connect the data emission interface and main PCB of optical-electrical converter, and data receiver is soft Band is used to connect the data receiver interface and main PCB of optical-electrical converter.Need to increase installation due to increasing complicated detection function newly Extra photoelectric component, and the internal structure design space of existing SFP encapsulation OLT optical modules is limited, then roll up extra Photoelectric component be difficult to realize, therefore bring that PON maintenance service is not enough, operation cost rises.

The content of the invention

In view of the above problems, it is an object of the invention to provide a kind of highly integrated OLT optical modules, it is intended to solve existing The intensity of each ONU light bag that OLT optical modules cannot detect to ODN line qualities, be received to OLT optical modules in certain time period and The undetectable technical problem of its time relationship.

The present invention is adopted the following technical scheme that：

The highly integrated OLT optical modules include pluggable electric connector and optical-electrical converter, both data transmittings Data driver is connected between interface, data amplifier, the OLT optical modules are connected between both data receiver interfaces Also include microprocessor and sampling holder, the I2C interfaces of the pluggable electric connector are protected by the microprocessor, sampling Holder is connected to the data receiver interface of the optical-electrical converter, and the triggering input interface of the pluggable electric connector is also connected with To the microprocessor and the excitation interface of sampling holder, the optical-electrical converter also includes that receiving detection interface and transmitting examines Interface is surveyed, the OLT optical modules also include intensity detector, memory, analog-digital converter, signal selector, detection clock source And impulse generator, the signal selector include common port, first end, the second end and for passage switching control end, The first end of the signal selector is connected to described reception and detects interface, and the second end of the signal selector is by described strong Degree detector is connected to the data receiver interface of the optical-electrical converter, and the control end of the signal selector is connected to described micro- Processor, the common port of the signal selector is connected to the microprocessor by the analog-digital converter, memory, described The Synchronization Control port of microprocessor is connected to the Synchronization Control port of the memory and impulse generator, the detection clock The output terminal of clock mouthful in source is respectively connecting to the memory, analog-digital converter and impulse generator, the impulse generator Pulse delivery outlet is connected to the transmitting detection interface.

Further, the memory includes first in first out memory cell, accumulator, control unit, logical AND unit, institute State first in first out memory cell and include linearly aligned multiple data registers, posted for entrance for one in the register at two ends Storage, another is outlet register, and the dfisplacement pulse output end of described control unit, reset output terminal are connected to described advanced First go out memory cell, be respectively used to control data displacement and the initialization of first in first out memory cell, institute in each data register State control unit and be also built-in with delay counter, the outlet register is additionally coupled to the first input of the logical AND unit End, the Enable Pin of described control unit is connected to the second input of the logical AND unit, the output of the logical AND unit End is connected to the first input end of the accumulator, and the second input of accumulator is used to receive the number for coming from analog-digital converter According to input, the numerical value output end of the accumulator is connected to the entrance register；Described control unit is according to the microprocessor The control signal correspondence control described control unit Enable Pin of device Synchronization Control port output is effective or invalid, when the Enable Pin When effectively, memory enters cumulative mode of operation, and when the Enable Pin is invalid, memory enters monitors mode of operation.

Further, the signal selector also includes the 3rd end, or more multiport, in the control of the control end Under, the common port corresponding with other ports can be connected.

Further, when the OLT optical modules only need to realize that ODN line qualities are detected, by the common port with it is described First end short circuit, when the OLT optical modules only need to realize that the light bag intensity of each ONU in certain time period and its time relationship are examined During survey, by the common port and second end short circuit；The control end of the signal selector and described need not be set simultaneously Line between control end and the microprocessor.

Further, when the OLT optical modules only need to realize that ODN line qualities are detected, without setting the intensity inspection Survey device.

Further, the microprocessor also includes：

Signal uploading module, for by the operating temperature of OLT optical modules, operating voltage, fault message, working condition and work Make parameter and webmaster is uploaded to by the I2C interfaces.

Further, the OLT optical modules are encapsulated using SFP, also including SFP bases, SFP outer covers, SC grabs, main PCB Plate, sub- pcb board, microspur connector, data transmitting soft ribbons, data receiver soft ribbons, detection transmitting soft ribbons, detection receive soft ribbons, institute State data driver, data amplifier, microprocessor, sampling holder, intensity detector, memory, analog-digital converter, signal Selector, detection clock source and impulse generator are located on the main PCB plate or sub- pcb board, the SC grabs, main PCB plate, son Pcb board, microspur connector and optical-electrical converter are located on the SFP bases, and the optical-electrical converter includes optical interface and data Emission interface, data receiver interface, transmitting detection interface and reception detection interface, the optical interface are used to be connected with outside ODN, The pluggable electric connector is the electrical interface of main pcb board one end, data transmitting soft ribbons connection main PCB plate and the opto-electronic conversion The data receiver interface of the data emission interface of device, the data receiver soft ribbons connection main PCB plate and optical-electrical converter, the inspection Survey the transmitting detection interface of transmitting soft ribbons connexon pcb board and optical-electrical converter, the detection receive soft ribbons connexon pcb board with The reception detection interface of optical-electrical converter, the microspur connector includes a pair of plug and sockets, corresponds to be welded on main PCB respectively On plate and sub- pcb board, for the electric signal between connexon pcb board and main PCB plate, the SFP after the plug and socket combination Outer cover is covered on SFP bases, light OLT modules is formed a metallic cavity for relative closure.

Further, the data receiver soft ribbons, data transmitting soft ribbons are located at described with the welding position of the main PCB plate On the slice that main PCB plate both sides are stretched out, the detection transmitting soft ribbons are located at the sub- PCB with the welding position of the sub- pcb board On the slice that plate side is stretched out, the data receiver soft ribbons, data transmitting soft ribbons, detection transmitting soft ribbons, detection receive soft ribbons with The welding position of institute's optical-electrical converter is located at the optical-electrical converter optical interface rear end and both sides.

The beneficial effects of the invention are as follows：The present invention increased transmitting detection interface to optical-electrical converter and receive detection and connects Mouthful, intensity detector, memory, analog-digital converter, signal selector, detection clock source, impulse generator are also add in addition, Realize the detection and the light bag intensity to each ONU in certain time period and its detection of time relationship to ODN line qualities. In addition, in preferred embodiments, by encapsulate internal high usage spatial design, using microspur connector, main PCB plate and By the accurate connection of four soft ribbons between sub- pcb board and optical-electrical converter, enable newly-increased detection function high in SFP encapsulation Degree is integrated, and realization is compatible with common OLT optical modules, so as to largely reduce equipment vendor, the exploitation of operator and fortune Dimension cost.

Brief description of the drawings

Fig. 1 is the functional block diagram that existing SFP encapsulates OLT optical modules；

Fig. 2 is the internal structure schematic diagram that existing SFP encapsulates OLT optical modules；

Fig. 3 is the structural representation that existing SFP encapsulation OLT optical modules remove another visual angle after base；

Fig. 4 is the functional block diagram of OLT optical modules provided in an embodiment of the present invention；

Fig. 5 is the functional block diagram of memory provided in an embodiment of the present invention；

Fig. 6 is the ODN line quality detection signal timing diagrams of OLT optical modules provided in an embodiment of the present invention；

Fig. 7 is light bag intensity and its time relationship the detection letter of each ONU of OLT optical modules provided in an embodiment of the present invention Number timing diagram；

Fig. 8 is the Structure explosion diagram of OLT optical modules provided in an embodiment of the present invention；

Fig. 9 is the Structure explosion diagram at another visual angle of OLT optical modules provided in an embodiment of the present invention；

Figure 10 is the connection diagram of main PCB plate provided in an embodiment of the present invention and microspur connector.

Specific embodiment

In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and It is not used in the restriction present invention.

Existing SFP encapsulation OLT optical modules do not possess ODN line quality detection functions and to OLT optical modes in certain time period The intensity and its detection function of time relationship of each ONU light bag that block is received, and the internal structure design space that existing SFP is encapsulated It is limited, it is difficult to increase more detection functions by laying more multicomponent device, cause the O＆M cost of operator, manufacturer to increase Plus.

In order to solve the above problems, the invention provides a kind of highly integrated OLT optical modules, in order to illustrate institute of the present invention The technical scheme stated, illustrates below by specific embodiment.

Fig. 4 shows the structure of OLT optical modules provided in an embodiment of the present invention, illustrate only and this hair for convenience of description The related part of bright embodiment.

Reference picture 4, the OLT optical modules that the present embodiment is provided include pluggable electric connector 1 and optical-electrical converter 12, both Data emission interface between be connected with data driver 2, be connected with data amplifier 3 between both data receiver interfaces, The data emission interface and data receiving interface of pluggable electric connector 1 are respectively labeled as TD, RD in diagram, the photoelectricity turns Parallel operation also includes receiving detection interface and transmitting detection interface.The optical-electrical converter 12 is used to realize data transmission signal, number According to the opto-electronic conversion for receiving signal and transmitting detection signal, receiving detection signal, and by optical interface and extraneous transmitting-receiving optical signal. The pluggable electric connector is used as electrical interface transmission associated electrical signals between optical module and OLT system.The data driver 2 Downlink data signal for being provided according to OLT system drives the optical-electrical converter 12 to send downlink optical signal, and data are amplified Device 3 is received after being used for the upstream data. signals amplification for receiving the optical-electrical converter 12 for OLT system.

The OLT optical modules also include microprocessor 4 and sampling holder 5, and the I2C of the pluggable electric connector 1 connects Mouth is connected to the data receiver interface of the optical-electrical converter 12 by the microprocessor 4, sampling holder 5, for controlling Optical module and reading testing result.The triggering input interface (i.e. TRIGGER interfaces) of the pluggable electric connector 1 is additionally coupled to The excitation interface of the microprocessor 4 and sampling holder 5, the TRIGGER interfaces are used for detection trigger process, wherein described Sampling holder 5 is used for sampled data and receives the average optical power value of signal and be converted into the voltage signal being kept, through A interfaces The average optical power value of some registered ONU is converted to by microprocessor 4.In diagram, the excitation interface of microprocessor 4 is T Interface.The OLT optical modules also include intensity detector 6, memory 7, analog-digital converter 8, signal selector 9, detection clock Source 10 and impulse generator 11, the signal selector 9 include common port 90, first end 91, the second end 92 and for passage The control end P of switching, the first end 91 of the signal selector is connected to described reception and detects interface, the signal selector Second end 92 is connected to the data receiver interface of the optical-electrical converter 12, the signal behavior by the intensity detector 6 The control end (i.e. P interfaces) of device is connected to the microprocessor (being connected to M interfaces), the common port 90 of the signal selector The F interface of the microprocessor is connected to by the analog-digital converter 8, memory 7, under the control of the microprocessor 4, The common port 90 is connected with the end 92 of first end 91 or second, realizes two channel selectings of passage.The intensity detector 6 is used The intensity of signal is received in detection data, and is converted into the second end 92 that voltage signal is sent to the signal selector 9.It is described to connect Receiving detection interface is used to detect that reception signal is sent to the first end 91 of the signal selector 9.The analog-digital converter 8 is used for The signal selector 9 is selected into the detection signal in passage certain time period and is converted into digital quantity.The memory 7 is used to deposit Data of the storage from the analog-digital converter 8, and transmit testing result to the F interface of the microprocessor 4.

In addition, the Synchronization Control port (i.e. S interfaces) of the microprocessor 4 is connected to the memory 7 and pulse generation The Synchronization Control port of device 11, the S interfaces are used for detection process Synchronization Control.Three clocks of the detection clock source 10 are defeated Outgoing interface is respectively connecting to the clock input interface of the memory 7, analog-digital converter 8 and impulse generator 11, and (i.e. CK connects Mouthful), for providing consistent clock signal.The pulse delivery outlet of the impulse generator 11 is connected to the transmitting detection and connects Mouthful, for producing specific electrical pulse sequence, it is converted into light pulse sequence for the optical-electrical converter 12 and is sent by optical interface Enter ODN, to realize detecting the line quality of ODN.

As a kind of concrete preferred structure of the memory 7, as shown in figure 5, including first in first out memory cell 71, tiring out Plus device 72, control unit 73, logical AND unit 74, the first in first out memory cell 71 posts comprising linearly aligned n data Storage, one is entrance register in the register at two ends, and another is outlet register, it is assumed that each data register Address be followed successively by from right to left A0, A1, A2 ..., An-2, An-1, right side address for A0 data register be entrance register, Left side address is outlet register for the data register of An-1.

The dfisplacement pulse output end DCK of described control unit 73, reset output terminal RST are connected to the first in first out storage Unit 71.The dfisplacement pulse output end output displacement pulse DCK signals, under the control of DCK signals, in each data register Numerical value moves to left a step successively.When the microprocessor 4 sends reset instruction via the S interfaces of the memory 7, by control The RST interfaces of unit 73 initialize first in first out memory cell 71.Described control unit 73 is also built-in with delay counter (figure Not shown in).The outlet register is additionally coupled to the first input end j of the logical AND unit 74, described control unit 73 Enable Pin EN be connected to the second input k of the logical AND unit 74, the output end y of the logical AND unit 74 is connected to The first input end of the accumulator 72, the second input of accumulator 72 be used to receiving come from analog-digital converter data it is defeated Enter, the numerical value output end of the accumulator is connected to the entrance register.Described control unit is same according to the microprocessor The control signal correspondence control described control unit Enable Pin of step control port output is effective or invalid, the Enable Pin EN outputs High or low level makes the logical AND unit 74 turn on or be output as zero, the y interfaces output letter of logical AND unit during conducting Number be equal to j interface input signals, the summing elements 72 will new input data and value summation cumulative in the past, as a result by institute The numerical value output end for stating summing elements 72 writes the corresponding registers of the address A0 of first in first out memory cell 71, the storage Device 7 enters cumulative mode of operation；When the control signal correspondence control control of microprocessor Synchronization Control port output When unit Enable Pin is invalid, the y interface output signals of the logical AND unit 74 are zero, and the second of the summing elements 72 is defeated The data for entering end are write direct the corresponding registers of the address A0 of the first in first out memory cell 71, and the memory 7 enters prison Listen mode of operation.

Several working methods of OLT optical modules are described below：

It is (1) consistent with existing method when needing to obtain the luminous power average value to a certain specified ONU light bag optical signal, OLT system sends the trigger signal for corresponding to a certain specified ONU light bag in time first, i.e., by the pluggable electric connector 1 TRIGGER interfaces send trigger signal to the sampling holder 5, microprocessor 4, and the sampling holder 5 is sampled described The data receiver interface of optical-electrical converter 12, the voltage letter that the luminous power average value of data reception signal is converted into being kept Number, the microprocessor 4 is delivered to by the sampling holder 5, the voltage signal that the microprocessor 4 will be received is converted into number Word amount, subsequent OLT system can pass through I2C interfaces and read the luminous power average value for specifying ONU light bag optical signals.

(2) when needing to carry out the detection of ODN line qualities, it is necessary to impulse generator 11 sends designated magnitude, cycle and volume The pulse electrical signal of code.OLT system sends the instruction for setting the impulse generator 11 first, via the pluggable electrical connection The I2C interfaces of device 1 send into the microprocessor 4, the microprocessor 4 according to OLT system command request, by S interfaces to institute State impulse generator 11 and send corresponding setting instruction, the impulse generator 11 sends corresponding pulse train and delivers to described The transmitting detection interface of optical-electrical converter 12, is converted into the ODN that light pulse signal issues the connection of this optical module, and ODN is to described The reflected light signal of optical-electrical converter 12, includes ODN line quality informations in the intensity and time relationship of reflected light signal, reflection Light is converted into electric signal, received detection interface output to the signal selector 9 inside the optical-electrical converter 12 First end 91, ODN line quality informations can be obtained by analyzing the electrical signal detection.

When implementing, the microprocessor 4 sends instruction by M interfaces through the P interfaces of the signal selector 9, will The passage one of the signal selector 9 is connected, i.e., common port 90 is connected with first end 91.The microprocessor 4 also passes through S interfaces The impulse generator 11 is controlled to periodically send out the detection emission interface of detection pulse train to the optical-electrical converter 12, Sent from the optical interface of the optical-electrical converter 12 after being converted into detection optical signal.The optical-electrical converter 12 also connects from optical interface Receive the detection being reflected back from ODN and receive optical signal, the optical-electrical converter 12 converts optical signals into continuous electric signal, through institute The passage one of signal selector 9 is stated, being converted into discrete sampled data by the analog-digital converter 8 delivers to the memory 7.Institute State microprocessor 4 and also pass through memory 7 described in S Interface Controllers into cumulative mode of operation, whenever the control of the memory 7 Unit processed 73 receives a detection clock CK signal from CK interfaces, is just transmitted to the first in first out memory cell through DCK interfaces 71, the numerical value in each register is moved to left an address respectively, the previously cumulative data of raw address An-1 storages are moved out of, pass through The logical AND unit delivers to the first input end of the summing elements 72, the summing elements 72 by previously cumulative data with The latest data for coming from the analog-digital converter 8 is added, and as a result writes the address A0 of the first in first out memory cell 71 correspondences Register.When the impulse generator 11 sends the sequence repeat period and the first in first out memory cell 71 of detection pulse Circulation storage cycle phase simultaneously, the memory 7 can carry out repeating cumulative depositing to the transforming numerical of the analog-digital converter 8 Storage, repeat it is cumulative be conducive to reducing influence of the noise to ODN line quality testing results, OLT system by cumulative data divided by Cycle-index is that can obtain ODN line quality testing results, and ODN line quality detection signal timing diagrams are shown in accompanying drawing 6.

(3) when the intensity and its time relationship for needing to carry out each ONU light bag that OLT optical modules in certain time period are received , it is necessary to the intensity detector 6 receives signal by the data receiver interface measurement data of the optical-electrical converter 12 during detection Intensity, and the second end 92 that continuous voltage signal delivers to the signal selector 9 is converted into, due in certain time period Interior, up light bag of the signal that data receiver interface is received comprising different ONU is through the electric signal after opto-electronic conversion, the company for changing out Continuous voltage signal also includes the intensity of the up light bags of each ONU and its information of time relationship.Because ONU light packet length, signal are strong Degree is variant, uses common unitary sampling retainer, it is impossible to realize the light bag intensity and at that time of each ONU certain time period Nei Between relation detection.

In the present embodiment, the analog-digital converter 8 is received and comes from signal selector common port analog telecommunications to be detected Number, also receive the clock signal for coming from the detection clock source 10, the continuous electric signal under clock signal control to being input into High-speed sampling, is converted into discrete digital signal sequences, and the memory 7, the memory are sent to from the analog-digital converter 8 7 under the clock signal control for receiving, Serial No. testing result are sequentially stored into the memory 7.Therefore to coming from The signal to be detected of the common port of the signal selector 9, the analog-digital converter 8 and the memory 7 are in the detection clock Under source 10 coordinates, it is possible to achieve digital sample and storage are carried out to the testing result in a period of time, detection data is most long lossless Storage time is equal to the maximum address number for the detection clock cycle being multiplied by the memory 7, and the increase detection clock cycle can increase The lossless storage time most long, but detection resolution will decline.

When implementing, OLT system is through the pluggable electric connector, the transmission instruction of the microprocessor 4, and control is described The passage two of signal selector 9 is turned on.The intensity detector 6 is measured by the data receiver interface of the optical-electrical converter 12 The intensity of data reception signal, is converted into continuous voltage signal and delivers to the analog-digital converter 8 through the signal selector 9 to enter Row analog-to-digital conversion, obtains the detection numerical value of the ONU light bag intensity corresponding to current detection clock CK signals.The microprocessor 4 Also pass through memory 7 described in S Interface Controllers to enter monitoring mode of operation and set delay counter initial value.The detection clock The detection clock CK signals feeding described control unit 73 that source sends, derivative DCK signals drive the first in first out unit Register data is moved to left in 71, and the data of highest address An-1 storages are moved out of discarding, while the output of the analog-digital converter 8 Numerical value is input into the memory 7.Because the y interfaces of the logical AND unit 74 are arranged to zero, the summing elements 72 will The data for coming from analog-digital converter 8 are write direct the corresponding registers of the address A0 of the first in first out memory cell 71, so The content that the first in first out unit 71 is preserved ceaselessly updates, the intensity of each ONU light bag that OLT optical modules of sampling all the time are received And it is stored in the memory 7 according to its time relationship.The storage result corresponding time period is from current time, forward to (n- 1) it is individual detection the clock cycle moment stop.The intensity of each ONU light bag and its time before and after OLT system needs to read a certain moment During the testing result of relation, OLT system is vertical to the microprocessor 4 by the TRIGGER interfaces of the pluggable electric connector 1 Trigger signal is sent, the trigger signal is converted into timing signal by the microprocessor 4, the memory 7 is issued through S interfaces Described control unit 73 be used for start-up study counter, stop when the delay counter in described control unit 73 is decremented to 0 Count, described control unit stops sending DCK signals, so as to stop memory moving to left.The effect of delay counter is to set Put OLT system and send detection time length after trigger signal, the testing result storage time after trigger signal is equal to inspection Surveying the clock cycle is multiplied by delay counter initial value, because the storage total length of the memory 7 is fixed value, trigger signal it Preceding detection time can be reduced accordingly.The reason for OLT system sends trigger signal can be that timing initiates detection, initiates inspection by hand Survey or detected by data communication exception-triggered.

An instantiation is given below, the light bag intensity and its time relationship detection signal of each ONU shown in reference picture 7 Timing diagram, delay counter initial value is set as 4 in figure.Bag A, bag B, bag C are 3 varying strengths, the light bag of different duration, right Answer numerical value respectively 30h, 10h, 40h after each light bag intensity-conversion.Under the driving of DCK signals, the first in first out storage is single Each register value stored in unit 71 moves to left an address respectively, and the detection numerical value that current analog-to-digital conversion is obtained moves into ground In the A0 of location.The timing signal correspondence that the S interfaces of the memory 7 are received is being wrapped in the range of B, after timing signal is received, time delay Counter is counted to the countdown of DCK signal enablings, and DCK signals stop after 4 clock cycle, and the memory 7 no longer updates, Subsequent OLT system reads data storage by the microprocessor 4, you can when obtaining sending specified before and after the trigger signal moment Between section testing result.The triggering reason of this example is that error code occurs when light bag B is received and triggers, by each ONU light bag The analysis of detected intensities, it can be found that the intensity of light bag B is significantly less than light bag A, so as to be able to quickly position failure and adopt Appropriate maintenance measure is taken, and by the only average light power detection method of existing OLT optical modules, it is impossible to find that light bag B is strong The low failure cause of degree.

Further, when only need ODN line qualities detect or certain time period in each ONU light bag intensity and its time During a kind of detection demand in relation, the signal selector 9 can be reduced to one section of direct-through line, i.e., when the OLT optical modules only When need to realize that ODN line qualities are detected, by the common port and the first end short circuit, when the OLT optical modules only need to realize When the light bag intensity and its time relationship of each ONU are detected in certain time period, by the common port and second end short circuit； The control end and the line between the control end and the microprocessor of the signal selector need not be set simultaneously.Especially , when the OLT optical modules only need to realize that ODN line qualities are detected, the intensity detector can be also further saved, realize Further reduces cost.

In the present embodiment, the common port of the signal selector 9 is the output end of chosen detection signal, signal choosing The first end 91 for selecting device 9 connects the analog electrical signal detected for ODN line qualities, and the second end 92 of the signal selector 9 connects The electric signal of light bag intensity and its time relationship detection to each ONU in certain time period.The P of the signal selector 9 connects Mouth is channel selecting control signal input, and OLT system is by sense channel select command by the pluggable electric connector 1 I2C interfaces send into this optical module, after the microprocessor 4 receives order, are sent out from M interfaces to the P interfaces of the signal selector 9 Passage switching command is sent to select sense channel, so as to fully be multiplexed the analog-digital converter 8, the memory 7, the detection The grade of clock source 10 detects resource, it is to avoid repeat.A kind of preferred embodiment is further used as, when there are two or more detection demands When, the 3rd end, or more multiport can be set up in the signal selector 9, while the common port of the signal selector 9 can be with Connected with the 3rd end or other ports set up under the control of P interfaces, to constitute 3rd or more detection signal passage.Institute Stating the M interfaces of microprocessor 4 can set up control line to realize that different sense channels are selected from the P interfaces of the signal selector 9 Select setting.

Last preferred, the microprocessor also includes：

Signal uploading module, for by the operating temperature of optical module, operating voltage, fault message, working condition and work Parameter is uploaded to webmaster by the pluggable electrical interface of the pluggable electrical interface circuit.

As described by background technology, using row's needle connector between the sub- PCB and main PCB of existing SFP encapsulation OLT optical modules Weld to connect signal, the shortcoming of this kind of connected mode is：Number of signals is few for connection, distance is big between signal pins, each solder joint all Each layers of PCB need to be used, cloth plate suqare is relatively taken, and the operability safeguarded is poor, data receiver soft ribbons and data launch soft ribbons The area occupied being welded on main PCB is larger, and free space is small on main PCB, and data receiver soft ribbons are covered under optical-electrical converter Side, causes that chill bar cannot be pasted herein, hinders optical-electrical converter radiating.

In order to solve this problem, in a kind of preferred scheme of the embodiment of the present invention, reference picture 8 to Figure 10, the present embodiment The OLT optical modules of offer are encapsulated using SFP, also including SFP base P1, SFP outer cover P2, SC grabs P3, main PCB plate P4, sub- PCB Plate P5, microspur connector P6, data transmitting soft ribbons P7, data receiver soft ribbons P8, detection transmitting soft ribbons P9, detection receive soft ribbons P10, the data driver, data amplifier, microprocessor, sampling holder, intensity detector, memory, analog-to-digital conversion The part such as device, signal selector, detection clock source and impulse generator is located on the main PCB plate P4 or sub- pcb boards P5, described SC grabs P3, main PCB plate P4, sub- pcb board P5, microspur connector P6 and optical-electrical converter 12 are located on the SFP bases P1, institute Optical-electrical converter 12 is stated to be connect including optical interface and data emission interface, data receiver interface, transmitting detection interface and reception detection Mouthful, the optical interface is used to be connected with outside ODN, and the pluggable electric connector 1 is the electrical interface of main pcb board one end, described The data emission interface of data transmitting soft ribbons P7 connection main PCB plates and optical-electrical converter, the data receiver soft ribbons P8 connections master The hair of the data receiver interface of pcb board and optical-electrical converter, the detection transmitting soft ribbons P9 connexons pcb board and optical-electrical converter Detection interface is penetrated, the detection receives the reception detection interface of soft ribbons P10 connexons pcb board and optical-electrical converter, the microspur Connector P6 includes a pair of plug and sockets, corresponds to be welded on main PCB plate and sub- pcb board respectively, the plug and socket group It is used for the electric signal between connexon pcb board and main PCB plate after conjunction, the SFP outer covers P2 is covered on SFP bases P1, makes light OLT Module forms a metallic cavity for relative closure.

In this preferred embodiment, microspur connector is made up of a pair of plug and sockets, is respectively welded by surface mounting technology On sub- pcb board and main PCB plate, plug and receptacle combinations realize electric signal connection between sub- PCB and main PCB, and microspur connector is adopted Welded with surface mounting technology, leg gap ratio row's needle connector is much smaller, and it is even more small to reach 0.4mm, due to microspur Connector leg spacing is fine and the surface of PCB is only used in welding, and the reverse side of correspondence microspur connector remains to cloth other electricity Sub- component, therefore sub- pcb board and the intensive electric signal connection of main PCB plate can be realized in less space, while reducing The occupancy of PCB usable areas, when running into module failure and needing to safeguard, plug and socket combination and fractured operation are very convenient.

In addition in terms of soft ribbons layout, the data receiver soft ribbons, data launch the welding position of soft ribbons and the main PCB plate On the slice stretched out setting in the main PCB plate both sides, the detection transmitting soft ribbons are located at the welding position of the sub- pcb board On the slice that the sub- pcb board side is stretched out, the data receiver soft ribbons, data transmitting soft ribbons, detection transmitting soft ribbons, detection connect Receive soft ribbons and be located at the optical-electrical converter optical interface rear end and both sides with the welding position of the optical-electrical converter.This programme is abundant The narrow gap between optical module SFP outer covers and optical-electrical converter is make use of, compared with existing SFP encapsulation OLT optical modules, the present invention The usable area of PCB is increased, soft ribbons trend has also got around electrooptical device upper and lower, made electrooptical device upper and lower Chill bar can easily be pasted, the heat dissipation channel of electrooptical device is opened.

To sum up, a kind of highly integrated OLT optical modules are present embodiments provided, with the ODN connected to OLT optical modules The function that line quality is detected, and to specifying the function of each up light bag intensity real-time detection in the time period, while By the design that internal height is integrated, realization is compatible with conventional OLT system holding, so as to enrich PON system operation maintenance Means, reduce the O＆M cost of equipment vendor, operator.

Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the invention, it is all in essence of the invention Any modification, equivalent and improvement made within god and principle etc., should be included within the scope of the present invention.

Claims (8)

1. a kind of highly integrated OLT optical modules, the OLT optical modules include pluggable electric connector and optical-electrical converter, two Data driver is connected between the data emission interface of person, data amplifier is connected between both data receiver interfaces, The OLT optical modules also include microprocessor and sampling holder, and the I2C interfaces of the pluggable electric connector are by described micro- Processor, sampling holder are connected to the data receiver interface of the optical-electrical converter, the triggering of the pluggable electric connector Input interface is additionally coupled to the excitation interface of the microprocessor and sampling holder, it is characterised in that the optical-electrical converter Also include receiving detection interface and transmitting detection interface, the OLT optical modules also include that intensity detector, memory, modulus turn Parallel operation, signal selector, detection clock source and impulse generator, the signal selector include common port, first end, the second end And for the control end of passage switching, the first end of the signal selector is connected to described reception and detects interface, the letter Second end of number selector is connected to the data receiver interface of the optical-electrical converter, the signal by the intensity detector The control end of selector is connected to the microprocessor, and the common port of the signal selector passes through the analog-digital converter, deposits Reservoir is connected to the microprocessor, and the Synchronization Control port of the microprocessor is connected to the memory and impulse generator Synchronization Control port, the detection clock source output terminal of clock mouth be respectively connecting to the memory, analog-digital converter and Impulse generator, the pulse delivery outlet of the impulse generator is connected to the transmitting detection interface.

2. highly integrated OLT optical modules as claimed in claim 1, it is characterised in that the memory is deposited including first in first out Storage unit, accumulator, control unit, logical AND unit, the first in first out memory cell include linearly aligned multiple data Register, one is entrance register in the register at two ends, and another is outlet register, the position of described control unit Move pulse output end, reset output terminal and be connected to the first in first out memory cell, in being respectively used to control each data register Data displacement and first in first out memory cell are initialized, and described control unit is also built-in with delay counter, and the outlet is posted Storage is additionally coupled to the first input end of the logical AND unit, and the Enable Pin of described control unit is connected to the logical AND list Second input of unit, the output end of the logical AND unit is connected to the first input end of the accumulator, and the of accumulator Two inputs are used to receive and come from the data input of analog-digital converter, the numerical value output end of the accumulator be connected to it is described enter Mouth register；The control signal correspondence control control that described control unit is exported according to the microprocessor Synchronization Control port Unit Enable Pin processed is effective or invalid, and when the Enable Pin is effective, memory enters cumulative mode of operation, when the Enable Pin When invalid, memory enters monitors mode of operation.

3. highly integrated OLT optical modules as claimed in claim 2, it is characterised in that the signal selector also includes the 3rd End, or more multiport, under the control of the control end, the common port corresponding with other ports can be connected.

4. highly integrated OLT optical modules as claimed in claim 2, it is characterised in that when the OLT optical modules only need to realize When ODN line qualities are detected, by the common port and the first end short circuit, when the OLT optical modules only need to realize certain Between when the light bag intensity and its time relationship of each ONU are detected in section, by the common port and second end short circuit；While nothing The control end and the line between the control end and the microprocessor of the signal selector need to be set.

5. highly integrated OLT optical modules as claimed in claim 4, it is characterised in that when the OLT optical modules only need to realize When ODN line qualities are detected, without setting the intensity detector.

6. highly integrated OLT optical modules as claimed in claim 2, it is characterised in that the microprocessor also includes：

Signal uploading module, for the operating temperature of OLT optical modules, operating voltage, fault message, working condition and work to be joined Number is uploaded to webmaster by the I2C interfaces.

7. OLT optical modules highly integrated as described in claim any one of 1-6, it is characterised in that the OLT optical modules are used SFP encapsulate, also including SFP bases, SFP outer covers, SC grabs, main PCB plate, sub- pcb board, microspur connector, data transmitting soft ribbons, Data receiver soft ribbons, detection transmitting soft ribbons, detection receive soft ribbons, the signal selector, analog-digital converter, memory, detection Clock source and impulse generator are located on the sub- pcb board, the intensity detector, data driver, data amplifier, sampling Retainer, microprocessor are located on the main PCB plate, the SC grabs, main PCB plate, sub- pcb board, microspur connector and photoelectricity Converter is located on the SFP bases, the optical-electrical converter include optical interface and data emission interface, data receiver interface, Transmitting detection interface and reception detection interface, the optical interface is used to be connected with outside ODN, based on the pluggable electric connector The data emission interface of the electrical interface of pcb board one end, the data transmitting soft ribbons connection main PCB plate and optical-electrical converter, it is described Data receiver soft ribbons connect the data receiver interface of main PCB plate and optical-electrical converter, and soft ribbons connexon pcb board is launched in the detection Transmitting with optical-electrical converter detects interface, and the detection receives soft ribbons connexon pcb board and detected with the reception of optical-electrical converter Interface, the microspur connector includes a pair of plug and sockets, corresponds to be welded on main PCB plate and sub- pcb board respectively, described to insert For the electric signal between connexon pcb board and main PCB plate after head and receptacle combinations, the SFP outer covers are covered on SFP bases, Light OLT modules are made to form a metallic cavity for relative closure.

8. highly integrated OLT optical modules as claimed in claim 7, it is characterised in that the data receiver soft ribbons, data transmitting The welding position of soft ribbons and the main PCB plate is located on the slice that the main PCB plate both sides are stretched out, the detection transmitting soft ribbons with The welding position of the sub- pcb board is located on the slice that the sub- pcb board side is stretched out, and the data transmitting soft ribbons turn with photoelectricity The welding position of parallel operation is located at the optical-electrical converter optical interface rear end, the data receiver soft ribbons, detection transmitting soft ribbons, detection Receive soft ribbons and be located at the optical-electrical converter optical interface both sides with the welding position of optical-electrical converter.