CN103516431B - Photoelectricity optical repeater, the long processing method away from box and its to upper and lower traveling optical signal - Google Patents

Abstract

The invention discloses a kind of photoelectricity optical repeater, the long processing method away from box and its to upper and lower traveling optical signal, main contents include：1：The uplink optical signal of each optical splitter is coupled as exporting afterwards all the way by N couplers gives photoelectricity optical repeater, photoelectricity optical repeater pair 1：The uplink optical signal of N couplers output carries out reshaping and amplifies again, and exports to optical line terminal OLT；Downlink optical signal is amplified and is exported to 1 by image intensifer：N couplers, 1：The downlink optical signal of the output of photoelectricity optical repeater is divided into the roads N and exported by N couplers gives itself connected N number of optical splitter.Photoelectricity optical repeater and image intensifer carry out reshaping to uplink and downlink signal respectively and amplify again and export, and extend the transmission range of optical signal；1：The Insertion Loss of N couplers is smaller so that and the splitting ratio increased in passive optical network PON is possibly realized, therefore, the length is away from box in the case where ensureing the length of optical signal away from transmission, it is possible to increase the splitting ratio of PON.

Description

Photoelectricity optical repeater, the long processing method away from box and its to upper and lower traveling optical signal

Technical field

The present invention relates to soft exchange technical fields more particularly to a kind of photoelectricity optical repeater, length away from box and its to uplink and downlink The processing method of optical signal.

Background technology

Under the overall background of global IT application, broadband access is quickly grown.Intelligent acess（Fiber-to-the-x, FTTx） Construction mode considerably reduces the construction cost of broadband access network, and realizes the bandwidth that access is netted with lower cost and carry It rises, the propulsion of the integration of three networks adds powerful power for the development of FTTx again.

With the propulsion of FTTx network constructions, the highly desirable reduction FTTx network construction costs of operator and O＆M cost, Large capacity, the developing direction of the be Future Access Network of few office.

Passive optical network（Passive Optical Network, PON）Technology is a kind of intelligent acess skill of point-to-multipoint Art.There are commonly time division multiplexing passive optical network（Time Division Multiplexing PON, TDM-PON）With when partial wave Divide mixed multiplexing passive optical network（Hybird PON, H-PON）.

In TDM-PON, system uplink and downlink is all made of single wavelength, and to uplink optical signal, each user uses different time slots It is transmitted, to downlink optical signal, is transmitted using the forms of broadcasting.Fig. 1 is existing TDM-PON structural schematic diagrams, including：Light Line terminal（Optical Line Terminal, OLT）, optical network unit（Optical Network Unit, ONU）, relaying Device（Mid-Span Extender）And optical splitter（splitter）.

In general, an OLT connects multiple ONU by a repeater and an optical splitter constitutes point-to-multipoint knot Structure, shown in FIG. 1 is that 4 OLT connect 4 optical splitters, 4 Optical Distribution Networks of formation by 4 repeaters respectively （Optical Distribution Network, ODN）Structural schematic diagram.

In TDM-PON structural schematic diagrams shown in FIG. 1, on the one hand, for uplink optical signal, the uplink of ONU transmittings The power of optical signal provides within limits；On the other hand, the Insertion Loss of optical splitter and the splitting ratio of its own are at just Than, splitting ratio is bigger, and Insertion Loss is bigger, and therefore, which limits the transmission ranges of optical signal, to ensure to realize big splitting ratio, Then the transmission range of optical signal will shorten, and to ensure the length for realizing optical signal away from transmission, splitting ratio will reduce, and be divided In the case of smaller, in order to load more user, need to set a fairly large number of ports PON.However the ends PON in OLT Mouth quantity is limited, to increase the ports PON newly, it is necessary to which newly-increased OLT establishes plurality using the ports PON of newly-increased OLT The ODN of amount.And networking cost and O＆M cost will all be increased by increasing OLT newly and establishing greater number of ODN.

In addition, in TDM-PON structures shown in Fig. 1, repeater it is complicated, realize that difficulty is big.

In H-PON, system into the transmission of traveling optical signal, is used again using the different light wave of wavelength below each wavelength Transmission of the time-multiplexed mode into traveling optical signal.Fig. 2 is the composed structure schematic diagram of existing H-PON, including：Mix optical link Terminal（Hybrid OLT, H-OLT）, repeater（Mid-Span Extender）, mixed optical network unit（Hybrid ONU, H- ONU）And optical splitter.Wherein, the multiple of local are used to receiving and sending difference by H-OLT by local multiplexing demultiplexing device The ports PON of the optical signal of wavelength connect（Multiple ports PON are claimed to be multiplexed/demultiplex with connect them one at this time A port H-PON of H-OLT is collectively formed with device）, realize the communication with repeater.In above-mentioned H-PON there is also with TDM- PON structure similar problem.

In conclusion in current passive optical network technique, if existing will ensure the length for realizing optical signal away from transmission In the case of, it is divided smaller problem.

Invention content

An embodiment of the present invention provides a kind of photoelectricity optical repeaters, multiple to solve repeater structure in the prior art It is miscellaneous, realize the big problem of difficulty.

A kind of photoelectricity optical repeater, the photoelectricity optical repeater include：Optical network unit ONU transceiver and OLT receivers；

The OLT receivers, for being exported by the uplink optical signal progress opto-electronic conversion of reception and after amplifying reshaping again To ONU transceiver；

The ONU transceiver, for being exported after carrying out electro-optic conversion from the uplink electrical signals of OLT receivers.

Photoelectricity optical repeater in the embodiment of the present invention, is made of ONU transceiver and OLT receivers, due to each transceiver Function is well defined, therefore, simple in structure, is easier to realize.

The embodiment of the present invention additionally provides a kind of processing method of length away from box and to upper and lower traveling optical signal, to solve In PON, in the case of ensureing the length of optical signal away from transmission, it is divided smaller problem.

Away from box, the length includes away from box for a kind of length：Photoelectricity optical repeater, 1：N couplers and image intensifer OA；

OA, for output after being amplified to the downlink optical signal from OLT to 1：N couplers；

Described 1：N couplers, the downlink optical signal for exporting OA are divided into the roads N, and output gives itself and is connected respectively N number of optical splitter, and the uplink optical signal of connected each optical splitter output is coupled as exporting afterwards all the way and is relayed to photoelectricity light Device；

The photoelectricity optical repeater, for coming from 1：The uplink optical signal of N couplers carries out reshaping and amplifies again, and It exports to OLT.

It is a kind of using above-mentioned length away from box to the processing method of uplink optical signal, the method includes：

1：N couplers are when receiving the uplink optical signal from coupled each optical splitter, by the upper of each optical splitter Traveling optical signal, which is coupled as exporting afterwards all the way, gives photoelectricity optical repeater；

Photoelectricity optical repeater pair 1：The uplink optical signal of N couplers output carries out reshaping and amplifies again, and exports and give OLT。

It is a kind of using above-mentioned length away from box to the processing method of downlink optical signal, the method includes：

The downlink optical signal is amplified and is exported to 1 when receiving the downlink optical signal from OLT by OA：N is coupled Device；

1：The downlink optical signal of the output of photoelectricity optical repeater is divided into the roads N by N couplers, and output gives itself phase respectively N number of optical splitter even.

Away from box, the length includes away from box for a kind of length：N photoelectricity optical repeater, 1：N couplers, the first multiplex/demultiplex Device, the second multiplexing demultiplexing device and image intensifer OA, the N are the positive integer more than 1, and the n is the positive integer more than 1；

The OA, for output after being amplified to the downlink optical signal from OLT to 1：N couplers；

Described 1：N couplers, the downlink optical signal for exporting OA are divided into the roads N, and output gives itself and is connected respectively N number of optical splitter, and the uplink optical signal that each optical splitter exports is coupled as being exported afterwards all the way to the second multiplex/demultiplex Device；

Second multiplexing demultiplexing device, for 1 will to be come from：The uplink optical signal of N couplers is decomposed into the roads k uplink linght Signal, and export to k photoelectricity optical repeater, wherein in the traveling optical signal of the roads k, carry the light per road traveling optical signal The wavelength of wave is different, and the k is the positive integer more than 1 and less than or equal to n；

The photoelectricity optical repeater, for will from the uplink optical signal of the second multiplexing demultiplexing device carry out reshaping and Output is to the first multiplexing demultiplexing device after amplifying again；

First multiplexing demultiplexing device, for the roads the k traveling optical signal from photoelectricity optical repeater to be combined on the way Traveling optical signal, and export to H-OLT.

It is a kind of using above-mentioned length away from box to the processing method of uplink optical signal, the method includes：

1：N couplers are when receiving the uplink optical signal from coupled each optical splitter, by the upper of each optical splitter Traveling optical signal is coupled as being exported afterwards all the way to the second multiplexing demultiplexing device；

Second multiplexing demultiplexing device is by 1：It is decomposed into the roads k traveling optical signal in the uplink optical signal of N couplers output, and It is exported respectively to k photoelectricity optical repeater, wherein in the traveling optical signal of the roads k, carry the light wave per road traveling optical signal Wavelength is different, and the k is the positive integer more than 1 and less than or equal to n；

K photoelectricity optical repeater carries out reshaping and again to the uplink optical signal of the second multiplexing demultiplexing device output respectively Output is to the first multiplexing demultiplexing device after amplification；

The uplink optical signal that k photoelectricity optical repeater exports is combined into uplink optical signal all the way by the first multiplexing demultiplexing device, And it exports to H-OLT.

It is a kind of using above-mentioned length away from box to the processing method of downlink optical signal, the method includes：

OA amplifies the downlink optical signal and exports to 1 when receiving the downlink optical signal from H-OLT：N couplers；

1：The OA downlink optical signals exported are divided into the roads N by N couplers, and output gives itself connected N number of light splitting respectively Device.

In the scheme of the embodiment of the present invention, on the one hand, the length being connected with a port PON of OLT is away from box or with H-OLT's The connected length in one port H-PON carries out reshaping to uplink optical signal away from the photoelectricity optical repeater in box and amplifies again, and will The rear uplink optical signal output that reshaping is amplified again, length, to being amplified to downlink optical signal, extend away from the image intensifer in box The transmission range of optical signal；On the other hand, it grows away from 1 in box：The Insertion Loss of N couplers is smaller so that increases the light splitting in PON Than being possibly realized, therefore, the length in the present invention, in the case where ensureing the length of optical signal away from transmission, increases in PON away from box Splitting ratio.

Description of the drawings

Fig. 1 is the composed structure schematic diagram of the PON in background technology；

Fig. 2 is the composed structure schematic diagram of the H-PON in background technology；

Fig. 3 is the structural schematic diagram of the photoelectricity optical repeater in the embodiment of the present invention one；

Fig. 4 is the clock signal schematic diagram of the logic unit output in the embodiment of the present invention one；

Fig. 5 is the length in the embodiment of the present invention two away from box structural schematic diagram；

Fig. 6 is 1 in the embodiment of the present invention two：The structure that 4 couplers 22 are connected with multimode fibre and single mode optical fiber is shown It is intended to；

Fig. 7 is structural schematic diagram of the length away from box applied to GPON systems in the embodiment of the present invention one；

Fig. 8 is length in the embodiment of the present invention three away from box structural schematic diagram；

Fig. 9 is the length in the embodiment of the present invention three away from box structural schematic diagram；

Figure 10 is the length in the embodiment of the present invention three away from box structural schematic diagram；

Figure 11 is the length in the embodiment of the present invention three away from box structural schematic diagram；

Figure 12 is the first wave-division multiplexer filter structural schematic diagram in the embodiment of the present invention three；

Figure 13 is the second wave-division multiplexer filter structural schematic diagram in the embodiment of the present invention three；

Figure 14 is the length in the embodiment of the present invention three away from box structural schematic diagram；

Figure 15 is the length in the embodiment of the present invention three away from box structural schematic diagram；

Figure 16 is the length in the embodiment of the present invention four away from box structural schematic diagram；

Figure 17 is the length in the embodiment of the present invention four away from box structural schematic diagram；

Figure 18 is the length in the embodiment of the present invention four away from box structural schematic diagram；

Figure 19 is the length in the embodiment of the present invention four away from box structural schematic diagram；

Figure 20 is a kind of processing method schematic diagram to uplink optical signal in the embodiment of the present invention five；

Figure 21 is a kind of processing method schematic diagram to downlink optical signal in the embodiment of the present invention six；

Figure 22 is a kind of processing method schematic diagram to uplink optical signal in the embodiment of the present invention seven；

Figure 23 is a kind of processing method schematic diagram to downlink optical signal in the embodiment of the present invention eight.

Specific implementation mode

The 1 of the embodiment of the present invention：N in N couplers is the positive integer more than 1, the value of N can according to actual demand and It determines, in the scheme of the embodiment of the present invention, is illustrated so that N takes 4 as an example.

Below by the specific embodiment scheme that the present invention will be described in detail.

Embodiment one

As shown in figure 3, for 23 structural schematic diagram of photoelectricity optical repeater in the embodiment of the present invention one, the photoelectricity light relaying Device 23 includes：ONU transceiver 31 and OLT receivers 32.

The OLT receivers 32, it is defeated after reshaping for the uplink optical signal of reception to be carried out opto-electronic conversion and is amplified again Go out to ONU transceiver；

The uplink optical signal that the OLT receivers 32 receive can come from 1：N couplers, and can will be after conversion Obtained downlink optical signal is exported to 1：N couplers.

The ONU transceiver 31, for being exported after carrying out electro-optic conversion from the uplink electrical signals of OLT receivers.

Preferably, it is contemplated that the ONU transceiver 31 in photoelectricity optical repeater 23 is in the transmitting without uplink optical signal It needs to close its emission switch, stops the operation for uplink optical signal, to avoid the crosstalk of other optical signals, ensure photoelectricity The normal work of optical repeater；And OLT receivers 32 keep resetting shape in time when this receives uplink optical signal State, in order to which the uplink optical signal inputted in it to next time is handled, the photoelectricity optical repeater further includes：Logic unit 33；

The OLT receivers 32 are additionally operable to export detection signal to logic unit 33, and the detection signal is that OLT is received Device is exported according to the power and the length of duration of the uplink optical signal of input.The detection signal can be:Signal is examined It surveys（Signal Detect, SD）Signal or dropout（Lost of Signal, LOS）Signal, the detection signal are SD signals When, detection signal is effective when OLT receivers receive uplink optical signal, is high level；When the detection signal is LOS signals, inspection It is effective when OLT receivers do not receive uplink optical signal to survey signal, is low level；

The logic unit 33, for when the detection signal of reception is SD signals and detection invalidating signal, instruction ONU to be received It sends out device 31 and OLT receivers 32 stops executing the operation for uplink optical signal, be SD signals and inspection in the detection signal of reception When survey signal is effective, indicate that ONU transceiver 31 and OLT receivers 32 execute the operation for uplink optical signal；In the inspection of reception When survey signal is LOS signals and effective detection signal, indicate that ONU transceiver 31 and OLT receivers 32 stop executing for uplink The operation of optical signal indicates that ONU transceiver and OLT receive when the detection signal of reception is LOS signals and detection invalidating signal Device executes the operation for uplink optical signal.

Preferably, in order to be handled uplink optical signal is further so that the uplink linght exported from photoelectricity optical repeater The signal quality of signal is preferable, and the photoelectricity optical repeater 23 further includes clock recovery unit 34 and timing unit 35 again；

The ONU transceiver 31 is additionally operable to the downlink optical signal of reception carrying out the downlink telecommunications obtained after opto-electronic conversion Number output to clock recovery unit 34；

The clock recovery unit 34, the downstream electrical signals for receiving ONU transceiver output, and from the downstream electrical signals Middle extraction reference clock exports reference clock to timing unit 35 again；

Timing unit 35 again, the uplink electrical signals and clock recovery unit for receiving the output of 32 receivers of OLT are defeated The reference clock gone out carries out timing again using the reference clock to the uplink electrical signals, and the uplink after timing again is electric Signal is exported to ONU transceiver 31.

Preferably, the logic unit 33 is additionally operable to when the detection signal of reception is effective, indicates again timing unit to this Ground register is resetted, alternatively, in the detection invalidating signal of reception, timing unit answers local register again for instruction Position, in order to which timing unit 35 resets the register of its own again, the uplink electrical signals to receive next time carry out timing again.

Specifically, logic unit 33 exports following clock signal after the detection signal for receiving the output of OLT receivers, To indicate that corresponding device in photoelectricity optical repeater or unit carry out the operation to uplink optical signal.Here to detect signal as SD It is illustrated for signal.

Reset2 is the reset signal that logic unit is exported to OLT receivers, and when SD is invalid, instruction OLT receivers stop It is only directed to the operation of uplink optical signal, when SD is effective, instruction OLT receivers execute the operation for uplink optical signal；

Reset1 is the reset signal that logic unit is exported to timing unit again, when SD is effective, indicates timing unit again Local register is resetted；

Tx_burst is the switch control signal that logic unit is exported to ONU transceiver, when SD is effective, OLT receivers Execute the operation for uplink optical signal.

Assuming that the uplink optical signal OLT Optical (guard times in Fig. 4 as shown in Figure 4 that OLT receivers receive Guard Time, expression do not have uplink signal input OLT receivers in the period), then OLT receivers are according to the light of input The power of signal and duration export SD to reset2, reset1 logic unit and that logic unit is according to SD outputs It is as follows with the process of Tx_burst：

[1], at the t1 moment, uplink optical signal inputs OLT receivers, by time delay t_delay1, OLT is defeated to logic unit Go out high level（SD signals show there is uplink optical signal input with high level in Fig. 4）；

[2], logic unit detects that SD signals are high level, by time delay t_delay6, defeated to ONU transceiver at the t2 moment Go out high level（Tx_burst in Fig. 4 is high level at this time）, instruction ONU transceiver opening emission switch, execution is for uplink The operation of optical signal.

[3], logic unit detects that SD signals are high level, by time delay t_delay4, defeated to OLT receivers at the t3 moment Go out low level（Reset2 in Fig. 4 is low level at this time）, instruction OLT receivers revocation reset, execution is for uplink optical signal Operation.

[4], logic unit is after the t3 moment, by time delay t_delay5, at the t4 moment to timing unit output reset signal again （Reset1 in Fig. 4 is high level at this time）, timing unit resets again for instruction, then timing unit resets local register, opens Begin to execute the fixed cycle operator again for the uplink electrical signals inputted.

[5], at the t5 moment, OLT receivers are inputted without uplink optical signal, OLT receivers pass through time delay t_delay2In t6 It carves to logic unit and exports low level（SD signals in Fig. 4 are low level at this time）.

[6], logic unit detects that SD signals are low level and keep certain width Tth（The Tth can pass through logic list The register of member is configured）, by time delay t_delay6, at the t7 moment low level is exported to ONU transceiver（Tx_ in Fig. 4 Burst is low level at this time）, instruction ONU transceiver closing emission switch, operation of the stopping for uplink optical signal.

[7], logic unit detects that SD signals are low level, by time delay t_delay3, defeated to OLT receivers at the t8 moment Go out high level（Reset2 in Fig. 4 is high level at this time）, instruction OLT receivers reset, behaviour of the stopping for uplink optical signal Make, and keeps reset state.

Above-mentioned t_delay1、t_delay2It can be configured by the register of OLT receivers, t_delay3、t_delay4、t_delay5、 t_delay6It can be configured by the register of logic unit.What above-mentioned reset1 and reset2 was shown is that high level is effective, when So, can also to be configured to low level effective.

Photoelectricity optical repeater in the embodiment of the present invention one, is made of ONU transceiver and OLT receivers, due to the two work( It can be well defined, it is therefore, simple in structure, it is easier to realize.

One scheme through the embodiment of the present invention, photoelectricity optical repeater realize the reshaping to uplink optical signal, put again Big and timing again so that output is preferable to the uplink optical signal quality of OLT or H-OLT, improves the reliability of fiber optic communication, by Photoelectricity optical repeater in the embodiment of the present invention one can carry out uplink linght reshaping, amplify again and timing again, therefore, this hair Photoelectricity optical repeater in bright embodiment can zoom out the transmission range of optical signal.

Embodiment two

As shown in figure 5, for structural schematic diagram of the length away from box in the embodiment of the present invention two, the length includes away from box：Light is put Big device（Optical Amplifier, OA）21、1：4 couplers 22 and photoelectricity optical repeater 23, wherein：

The OA 21, for output after being amplified to the downlink optical signal from OLT to 1：N couplers 22；

Described 1：4 couplers 22, the downlink optical signal for exporting OA is divided into the roads N, and output gives itself phase respectively N number of optical splitter even, and the uplink optical signal that coupled each optical splitter exports is coupled as being exported afterwards to photoelectricity all the way Optical repeater 23；

The photoelectricity optical repeater 23, for coming from 1：The uplink optical signal of 4 couplers 22 carries out reshaping and puts again Greatly, it and exports to OLT.

Preferably, described in order to reduce uplink optical signal by 1：The Insertion Loss of 4 couplers 22, photoelectricity optical repeater 23 and 1： 4 couplers 22 pass through multimode fibre（Multi-Mode Fiber, MMF）It is connected.

Due to 1：There is 4 couplers 22 asymmetry of optical signal loss, the i.e. loss of optical signal to pass through certainly with optical signal The direction of travel of body is related, when optical signal from single mode optical fiber (Single Mode Fiber, SMF) through 1：4 couplers 22 are transferred to The loss of multimode fibre, optical signal is 1dB；And work as optical signal from multimode fibre through 1：4 couplers 22 are transferred to single mode optical fiber, light The loss of signal is 10lg (1/4) dB, therefore, photoelectricity optical repeater 23 and 1 in the embodiment of the present invention：4 couplers 22 pass through Multimode fibre（Multi-Mode Fiber, MMF）It is connected, and the loss pair with downlink optical signal, it can be by OA 21 to downlink The increase of the amplification factor of optical signal makes up.

Specifically, 1：Structural schematic diagram that 4 couplers 22 are connected with multimode fibre and single mode optical fiber as shown in fig. 6, its In with multimode fibre and 1：The multimode port of 4 couplers 22 is connected, single mode optical fiber and 1：The single mode port of 4 couplers 22 is connected.

When 4 road traveling optical signals are transferred to 1 by multiple single mode optical fibers：When 4 coupler, 1：4 couplers are to the 4 road row Optical signal utilizes flowcollector aggregation scheme FlowCollector（Such as：Lens, fusion vertebral pulling mode）It is combined into and is exported all the way to multimode fibre.

Preferably, the length further includes away from box：Current divider 24 and local management unit 25；

The current divider 24 is exported all the way for the downlink optical signal from OLT to be divided into two-way to local management unit 25, another way is exported to the OA 21, and the uplink optical signal that the photoelectricity optical repeater 23 exports is forwarded to OLT.

The local management unit 25, for according to the downlink optical signal that receives to photoelectricity optical repeater 23 and OA21 into Row parameter configuration, and report local parameter information to OLT.

Specifically, the photoelectricity optical repeater 23 includes：ONU transceiver 31 and OLT receivers 32；

The ONU transceiver 31, for being given to being exported after carrying out electro-optic conversion from the uplink electrical signals of OLT receivers 32 Current divider 24；

The OLT receivers 32, for coming from 1：The uplink optical signal of 4 couplers carries out opto-electronic conversion and amplifies again again Output is to ONU transceiver after shaping.

Specifically, the local management unit 25 receives the parameter comprising photoelectricity optical repeater 23 and OA 21 from OLT The downlink optical signal of configuration information, and pass through ONU management and control interface using the parameter configuration（ONU Management And Control Interface, OMCI）Power, reception optical signal of the channel to the transmitting optical signal of photoelectricity optical repeater 23 Power and its operating voltage and bias current photoelectricity optical repeater 23 is configured, managed and is safeguarded, the channels OMCI For the channel between local management unit and photoelectricity optical repeater.

Come it should be noted that the local management unit in the present embodiment two receives the downlink optical signal from current divider 24 Parameter configuration is carried out to photoelectricity optical repeater 23, at this point, the configuration information is to be exported from the length away from the ports PON that box is connected , but the local management unit in the scheme of the present embodiment two be not limited to receive from its belonging to length be connected away from box The downlink optical signal of the ports PON can also receive the parameter configuration letter in the downlink optical signal of other ports PON from OLT Breath is realized using the parameter configuration to the parameter configuration of photoelectricity optical repeater, management and maintenance.

Length in the embodiment of the present invention two is applied to time division multiplexing away from box（Time Division Multiplexer) In PON system, such as：Ether PON（Ethernet Passive Optical Networks, EPON）System, gigabit PON （Gigabit-capable Passive Optical Networks, GPON）System, 10,000,000,000 PON（10G-PON）System, XG- PON system, in different systems, length of the invention can be carried out away from the photoelectricity optical repeater in box according to the requirement of each system Corresponding configuration, to adapt to corresponding system.

Due in the scheme of the embodiment of the present invention two, on the one hand, length is away from the photoelectricity optical repeater in box to uplink optical signal It has carried out reshaping and has amplified again, length amplifies downlink optical signal away from the image intensifer in box again, extends optical signal Transmission range, on the other hand, due to 1:N couplers are smaller to the Insertion Loss of uplink optical signal, using in the embodiment of the present invention The long splitting ratio that can increase away from box in TDM-PON.It is thereby achieved that it is big away from transmission situation in the length for ensureing optical signal, increase Big splitting ratio, so that utilizing the ports PON of negligible amounts, so that it may to load more user.

Fig. 7 show the length in the embodiment of the present invention two away from box be applied to GPON systems structural schematic diagram, in the figure 7 with It is long away from including 1 in box:For 4 couplers, length through the invention establishes 4 ODN in background technology in GPON away from box OLT a port PON under, realize big splitting ratio, can connect more ONU, namely the more users of service, improve The efficiency of ODN is established in the ports PON of OLT.

Embodiment three

In view of the ONU transceiver 31 in photoelectricity optical repeater needs to be sent out in the transmitting without uplink optical signal It penetrates switch to close, stops the operation for uplink optical signal, to avoid the crosstalk of other optical signals, ensure photoelectricity optical repeater Normal work；And OLT receivers 32 keep reset state in time when this receives uplink optical signal, in order to right The uplink optical signal that next time inputs in it is handled, and the embodiment of the present invention three is based on the basis of embodiment two, to long away from box Structure advanced optimize, schematic diagram is as shown in Figure 8.

The photoelectricity optical repeater 23 further includes：Logic unit 33；

The OLT receivers 32 are additionally operable to export detection signal, when which is SD signals, inspection to logic unit It surveys signal and receives 1 in OLT receivers 32：It is effective when the uplink optical signal of the output of N couplers, it is high level, detection letter When number being LOS signals, detection signal does not receive 1 in OLT receivers 32：It is effective when the uplink optical signal of N couplers output, be Low level；

The logic unit 33, for when the detection signal of reception is SD signals and detection invalidating signal, instruction ONU to be received It sends out device 31 and OLT receivers 32 stops executing the operation for uplink optical signal, be SD signals and inspection in the detection signal of reception When survey signal is effective, indicate that ONU transceiver 31 and OLT receivers 32 execute the operation for uplink optical signal；In the inspection of reception When survey signal is LOS signals and effective detection signal, indicate that ONU transceiver 31 and OLT receivers 32 stop executing for uplink The operation of optical signal indicates that ONU transceiver 31 and OLT connect when the detection signal of reception is LOS signals and detection invalidating signal It receives device 32 and executes the operation for being directed to uplink optical signal.

Preferably, it is grown away from box with the timing function again to uplink optical signal to realize so that length exports upper away from box The quality of traveling optical signal is preferable, and the embodiment of the present invention three provides three kinds long away from box, and structural schematic diagram is respectively such as Fig. 9, Figure 10 Shown in Figure 11, basic thought is that reference clock is extracted from downlink optical signal, using the reference clock of extraction to uplink Signal carries out timing again.Fig. 9, Figure 10 and Figure 11 is combined to illustrate long three kinds of structures away from box separately below.

The first structure：

As shown in figure 9, the length further includes away from box：Optical splitter 26 and the first smooth diplexer 27；The ONU transceiver 31 is wrapped Include uplink optical signal emission port and downlink optical signal receiving port；The photoelectricity optical repeater 23 further includes：Clock recovery list Member 34 and again timing unit 35, wherein：

The optical splitter 26, the downlink optical signal for exporting current divider 25 is divided into two-way, and will wherein export all the way To the first smooth diplexer 27, another way is exported to OA 21, and receives the uplink optical signal from the first smooth diplexer 27, and Output this to current divider 25；

First smooth diplexer 27, is identified for the optical signal to reception, is receiving from the upper of ONU transceiver 31 When the uplink optical signal of traveling optical signal emission port output, optical splitter 26 is output this to, is being received from optical splitter 26 When downlink optical signal, the downlink optical signal receiving port of ONU transceiver 31 is output this to；

The ONU transceiver 31 is additionally operable to receive the downlink optical signal of the first smooth diplexer 27 output, and by the downlink light Signal is converted to downstream electrical signals and exports to clock recovery unit 34；

The clock recovery unit 34, for extracting reference clock from the downstream electrical signals received, and will be described Reference clock is exported to timing unit 35 again；

Timing unit 35 again, the uplink electrical signals for receiving the output of OLT receivers 32, utilize the reference received Clock carries out timing again to the uplink electrical signals, and the uplink electrical signals after timing again are exported to ONU transceiver 31.

Second of structure：

As shown in Figure 10, the length further includes away from box：Optical splitter 26 and the first smooth diplexer 27, the ONU transceiver 31 Including uplink optical signal emission port and downlink optical signal receiving port, the photoelectricity optical repeater 23 further includes：Clock recovery Unit 34 and again timing unit 35；

First smooth diplexer 27, is identified for the optical signal to reception, is receiving the uplink from ONU transceiver When the uplink optical signal of optical signal launch port output, current divider 24 is output this to, is being received under current divider 24 When traveling optical signal, optical splitter 26 is output this to；

Optical splitter 26, the downlink optical signal for exporting the first smooth diplexer 27 are divided into two-way, and will be wherein defeated all the way Go out to the downlink optical signal receiving port of ONU transceiver 31, another way is exported to OA 21；

The ONU transceiver 31 is additionally operable to receive the downlink optical signal that optical splitter 26 exports, and the downlink optical signal is turned Downstream electrical signals are changed to export to clock recovery unit 34；

The clock recovery unit 34, for extracting reference clock from the downstream electrical signals received, and will be described Reference clock is exported to timing unit 35 again；

Timing unit 35 again, the uplink electrical signals for receiving the output of OLT receivers 32, utilize the reference received Clock carries out timing again to the uplink electrical signals, and the uplink electrical signals after timing again are exported to ONU transceiver 31.

It is the same to grow in figure 9 and in figure 10 away from the device inside box, and only connection relation is changed.

The third structure：

As shown in figure 11, the length further includes away from box：Embedded ONT Optical Network Terminal（Embedded Optical Network Terminal, EONT）29 and the first smooth diplexer 27；The photoelectricity optical repeater 23 further includes：Timing unit 35 again；

The first smooth diplexer 27, detaches for the optical signal to reception, and ONU transceiver 31 is come from receiving When the uplink optical signal of output, which is exported to current divider 24, is receiving the downlink light from current divider 24 When signal, which is exported to image intensifer 21；

The EONT 29, for the downlink optical signal exported from current divider 24 to be converted to downstream electrical signals, from the downlink Reference clock is extracted in electric signal, and reference clock is exported to timing unit again, which is exported to local management Unit 25；

Timing unit 35 again, the uplink electrical signals for receiving the output of OLT receivers 32 are exported using EONT 29 Reference clock timing again is carried out to the uplink electrical signals, and the uplink electrical signals after timing again are exported to ONU transceiver 31。

Preferably, in above-mentioned three kinds of structures, in order to make it is long away from box can accurately to from different uplink optical signals into Accurately timing, the logic unit 33 are additionally operable to when the detection signal of reception is effective row again, and timing unit 35 is right again for instruction Local register is resetted, alternatively, in the detection invalidating signal of reception, instruction again timing unit 35 to local register into Row resets, also will local register reset, the uplink electrical signals exported for OLT receivers 32 are periodically prepared again.

Preferably, in above-mentioned three kinds of structures, the length further includes away from box：Second smooth diplexer 28, for receiving Optical signal detached receiving come from 1：When the uplink optical signal of N couplers 22, which is exported to OLT Receiver 32 exports the downlink optical signal to 1 when receiving from the downlink optical signal that OA21 is exported：4 couplers 22.

Preferably, the described first smooth diplexer 27 is wave-division multiplexer filter or optical circulator, the second smooth diplexer 28 be wave-division multiplexer filter or optical circulator.

When the described first smooth diplexer 27 is wave-division multiplexer filter, structure is as shown in figure 12；

When the described second smooth diplexer 28 is wave-division multiplexer filter, structure is as shown in figure 13；

R shown in Figure 12 and Figure 13 is the reflector port of wave-division multiplexer filter, and P is the transmission of wave-division multiplexer filter Port, C are the public port of wave-division multiplexer filter, and wave-division multiplexer filter is using linear filter piece to defeated from public port C The optical signal entered is detached, when the wavelength of the optical signal of input is less than the sideband wavelength of linear filter piece, it is defeated from P mouthfuls Go out；When the wavelength of the optical signal of input is more than the sideband wavelength of linear filter piece, it is exported from R mouthfuls.

The sideband wavelength of the linear filter piece can determine according to the wave-length coverage of upper and lower traveling optical signal, such as：Assuming that The wave-length coverage of uplink optical signal is 1260 nanometers（nm）The wave-length coverage of ~ 1360nm, downlink optical signal are 1480 ~ 1550nm, Then sideband wave length is more than 1360nm and is less than 1480nm, for example, 1450nm can be taken.

When the described first smooth diplexer 27 and the second smooth diplexer 28 are wave-division multiplexer filter, the double news of the first light of note Device is the first wave-division multiplexer filter, and the second smooth diplexer is the second wave-division multiplexer filter, and the long structural schematic diagram away from box is such as Shown in Figure 14.

In fig. 14, the uplink that the reflector port R of the first wave-division multiplexer filter passes through single mode optical fiber and ONU transceiver 31 Optical signal launch port is connected, and public port C is connected by single mode optical fiber with current divider 24, and transmission port P passes through single mode optical fiber It is connected with optical splitter 26；

The reflector port R of second wave-division multiplexer filter is connected by single mode optical fiber with image intensifer 21, and public port C is logical Cross multimode fibre and 1:4 couplers 22 are connected, and transmission port P is connected by multimode fibre with OLT receivers 32；

When the described first smooth diplexer 27 and the second smooth diplexer 28 are optical circulator, the first smooth diplexer of note is the One optical circulator, the second smooth diplexer are optical circulator, and the long structural schematic diagram away from box is as shown in figure 15.

Optical circulator there are three port, respectively port 1, port 2 and port 3,（It is indicated with 1,2,3 in Figure 15）, port 1 For the input port of optical signal, port 2 is the input/output end port of optical signal, and port 3 is the output port of optical signal, light letter Number transmission path can only be from port 1 to port 2, or from port 2 to port 3, other transmission paths are forbidden.

In fig.15, the port 1 of the first optical circulator is emitted by single mode optical fiber and the uplink optical signal of ONU transceiver 31 Port is connected, and port 2 is connected by single mode optical fiber with current divider 24, and port 3 is connected by single mode optical fiber with optical splitter 26；

The port 1 of second optical circulator is connected by single mode optical fiber with image intensifer 21, and port 2 passes through multimode fibre and 1: 4 couplers 22 are connected, and port 3 is connected by multimode fibre with OLT receivers 32；

Since optical signal is smaller from single mode optical fiber to multimode fibre Insertion Loss, and from multimode fibre to single mode optical fiber Insertion Loss compared with Greatly, therefore, above-mentioned traveling optical signal up and down is in the transmission process of wave-division multiplexer filter or optical circulator, downlink optical signal letter Number through single mode optical fiber input reflection port R to public port C（Or from port 1 to port 2）, Insertion Loss is smaller；Uplink optical signal from Public port C to the transmission port P being connected with multimode fibre（Or from port 2 to port 3）Insertion Loss is also smaller.

The length of above-mentioned Figure 14 is that the first diplexer is replaced with the filter of the first wavelength-division multiplex on the basis of Figure 10 away from box structure Second diplexer is replaced with what the second wave-division multiplexer filter obtained by wave device, and the length of Figure 15 is away from the base that box structure is in Figure 10 The first diplexer is replaced with into the first optical circulator on plinth, the second diplexer is replaced with what the second optical circulator obtained, Fig. 9 and Figure 11 can also carry out above-mentioned replacement, and which is not described herein again.

Photoelectricity optical repeater in the photoelectricity optical repeater in growing above-mentioned three kinds of structures away from box can be embodiment one, That is, logic unit, after the detection signal for receiving the output of OLT receivers, output timing signal and embodiment are a kind of The clock signal of logic unit output is identical, and which is not described herein again.

Three scheme through the embodiment of the present invention, length are realized to uplink optical signal again away from the photoelectricity optical repeater in box Shaping is amplified and timing again again so that exports preferable to the uplink optical signal quality of OLT, the long image intensifer away from box is realized Amplification to downlink optical signal, improves the reliability of fiber optic communication, since the length in the embodiment of the present invention three can be right away from box Uplink linght carry out reshaping, amplify again and again timing and downlink optical signal is amplified, therefore, in the embodiment of the present invention The long transmission range that optical signal can be zoomed out away from box, this allow for the length in the embodiment of the present invention away from box can place from OLT compared with Remote position.

Example IV

In view of in existing passive optical network system, in order to increase the bandwidth of user, wavelength-division multiplex technique and time-division are answered Combined with technology, while applied in passive optical network, such system is known as wavelength-division and time-division multiplexing passive light at this time Network system, the optical line terminal in the system is mixing optical line terminal at this time（Hybird OLT, H-OLT）, ONU is corresponding Also it is mixing ONU（Hybird ONU,H-ONU）, in order to improve the splitting ratio in such system in the case where length is away from transmission, the present invention A kind of length of example IV offer is away from box, and structural schematic diagram is as shown in figure 16, and the length includes away from box：First multiplex/demultiplex Device 20, the second multiplexing demultiplexing device 29, image intensifer OA 21,1：4 couplers 22 and n photoelectricity optical repeater 23, the n are Positive integer more than 1；

The OA 21, for output after being amplified to the downlink optical signal from optical line terminal OLT to 1：N is coupled Device 22；

Described 1：4 couplers 22, the downlink optical signal for exporting OA is divided into 4 tunnels, and output gives itself phase respectively 4 optical splitters even, and the uplink optical signal that each optical splitter exports is coupled as being exported afterwards all the way to the second multiplex/demultiplex Device 29；

Second multiplexing demultiplexing device 29, for 1 will to be come from：The uplink optical signal of 4 couplers 22 is decomposed into the roads k Traveling optical signal, and export to k photoelectricity optical repeater 23, wherein in the traveling optical signal of the roads k, carry per road uplink linght letter Number light wave wavelength it is different, the k be more than 1 and less than or equal to n positive integer；

The photoelectricity optical repeater 23, it is whole again for that will be carried out from the uplink optical signal of the second multiplexing demultiplexing device 29 Shape and after amplifying again output to the first multiplexing demultiplexing device 20；

First multiplexing demultiplexing device 20, for the roads the k traveling optical signal from photoelectricity optical repeater 23 to be combined into one Road traveling optical signal, and export to H-OLT.

Preferably, in order to which uplink optical signal passes through 1：The Insertion Loss of 4 couplers 22, the OA 21 and 1：N couplers 22 pass through Multimode fibre is connected；

Preferably, the preset wavelength and second for carrying the light wave of uplink optical signal in the photoelectricity optical repeater 23 It is identical for carrying the wavelength of light wave of the uplink optical signal in the uplink optical signal that multiplexing demultiplexing device 29 is sent；

Second multiplexing demultiplexing device 29 is specifically used for that 1 will be come from：The uplink optical signal of 4 couplers 22 is decomposed into k Road traveling optical signal, and respectively distinguished the roads k traveling optical signal according to the wavelength for the light wave for carrying each road traveling optical signal It exports to Wavelength matched photoelectricity optical repeater 23.

Preferably, configured, managed and safeguarded that the length further includes away from box away from box to length for the ease of H-OLT：Shunting Device 24 and local management unit 25；

The current divider 24 exports give local management list all the way for the downlink optical signal from H-OLT to be divided into two-way Member 25, another way is exported to the OA 21, and the uplink optical signal that first multiplexing demultiplexing device 20 is exported forwards To H-OLT；

The local management unit 25, for being joined to photoelectricity optical repeater and OA according to the downlink optical signal received Number configuration, and report local parameter information to OLT.

Preferably, the photoelectricity optical repeater 23 includes：ONU transceiver 31 and OLT receivers 32；

The OLT receivers 32, for from the second multiplexing demultiplexing device uplink optical signal carry out opto-electronic conversion and Output is to the ONU transceiver in the photoelectricity optical repeater where itself after amplifying reshaping again；

The ONU transceiver 31, for output after carrying out electro-optic conversion from the uplink electrical signals of OLT receivers to the One multiplexing demultiplexing device.

Preferably, the photoelectricity optical repeater further includes：Logic unit 33；

The OLT receivers 32 are additionally operable to export detection signal, when which is SD signals, inspection to logic unit It is effective when OLT receivers receive the uplink optical signal of the second multiplexing demultiplexing device output to survey signal, is high level, the inspection When survey signal is LOS signals, detection signal does not receive the uplink linght letter of the second multiplexing demultiplexing device output in OLT receivers Number when it is effective, be low level；

The logic unit 33, for when the detection signal of reception is SD signals and detection invalidating signal, instruction ONU to be received It sends out device and OLT receivers stops executing the operation for uplink optical signal, be SD signals and detection letter in the detection signal of reception When number effective, indicate that ONU transceiver and OLT receivers execute the operation for uplink optical signal；It is in the detection signal of reception When LOS signals and effective detection signal, indicate that ONU transceiver and OLT receivers stop executing the operation for uplink optical signal, When the detection signal of reception is LOS signals and detection invalidating signal, indicate that ONU transceiver and OLT receivers are executed for upper The operation of traveling optical signal.

Preferably, timing again is carried out to uplink optical signal in order to realize, structure of the above-mentioned length away from box has been carried out further Optimization, the three kinds long structure away from box described herein can be realized and carry out timing again to uplink optical signal, at this point, these three are different Length away from box structure respectively as shown in Figure 17, Figure 18 and Figure 19, combine Figure 17, Figure 18 and Figure 19 to the long knot away from box separately below Structure illustrates.

For the length in Figure 17 away from box, in addition to comprising the first multiplexing demultiplexing device 20, the second multiplexing demultiplexing device 29, 1：Outside 4 couplers 22, image intensifer OA 21, n photoelectricity optical repeater 23, current divider 24 and local management unit 25, further include Optical splitter 26, n the first smooth diplexers 27, wherein the n the first smooth diplexers 27 and n photoelectricity optical repeater 23 are one by one It is corresponding；The ONU transceiver 31 includes uplink optical signal emission port and downlink optical signal receiving port；

The optical splitter 26, the downlink optical signal for exporting current divider 24 is divided into two-way, and will wherein export all the way To the first multiplexing demultiplexing device 20, another way is exported to OA 21, and receives the uplink from the first multiplexing demultiplexing device 20 Optical signal, and output this to current divider 24；

First smooth diplexer 27, detaches for the optical signal to reception, and light corresponding with itself is come from receiving When the uplink optical signal of the uplink optical signal emission port output of the ONU transceiver 31 in electric light repeater, the is output this to One multiplexing demultiplexing device outputs this to the ONU when receiving the downlink optical signal from the first multiplexing demultiplexing device The downlink optical signal receiving port of transceiver 31；

The photoelectricity optical repeater further includes：Clock recovery unit 34 and again timing unit 35；

The ONU transceiver 31 is additionally operable to receive the first smooth diplexer corresponding with the photoelectricity optical repeater where itself The downlink optical signal of output, and the downlink optical signal is converted into downstream electrical signals and exports photoelectricity optical repeater to where itself In clock recovery unit 34；

The clock recovery unit 34, for extracting reference clock from the downstream electrical signals received, and will be described Reference clock is exported to the timing unit again in the photoelectricity optical repeater where itself；

Timing unit 35 again, what the OLT receivers 32 for receiving in the photoelectricity optical repeater where itself exported Uplink electrical signals carry out timing again using the reference clock received to the uplink electrical signals, and by the uplink after timing again The ONU transceiver 31 in photoelectricity optical repeater where electric signal output to itself.

For the length in Figure 18 away from box, in addition to comprising the first multiplexing demultiplexing device 20, the second multiplexing demultiplexing device 29, 1：Outside 4 couplers 22, image intensifer OA 21, n photoelectricity optical repeater 23, current divider 24 and local management unit 25, also wrap It includes：Optical splitter 26, the first smooth diplexer 27 and third multiplexing demultiplexing device 30；The ONU transceiver includes uplink optical signal hair Penetrate port and downlink optical signal receiving port；

The first smooth diplexer 27, detaches for the optical signal to reception, and the first multiplexing/solution is come from receiving When the uplink optical signal of the uplink optical signal emission port output of multiplexer 20, which is exported to current divider 24, When receiving the downlink optical signal from current divider, which is exported to optical splitter 26；

The optical splitter 26, for the downlink optical signal of the first smooth diplexer output to be divided into two-way, and will wherein all the way It exports to third multiplexing demultiplexing device 30, another way is exported to OA 21；

The third multiplexing demultiplexing device 30, for the downlink optical signal from optical splitter to be decomposed into the roads m downlink light letter Number, it is exported respectively to the downlink optical signal receiving port of the ONU transceiver 31 in m photoelectricity optical repeater 23, wherein the m In the downlink optical signal of road, the wavelength carried per the light wave of road downlink optical signal is different, and the m is more than 1 and to be less than or equal to n Positive integer；

The photoelectricity optical repeater further includes：Clock recovery unit 34 and again timing unit 35；

The ONU transceiver 31 is additionally operable to receive the downlink optical signal of 30 output of third multiplexing demultiplexing device, and should Downlink optical signal is converted to downstream electrical signals and exports to the clock recovery unit 34 in the photoelectricity optical repeater 23 where itself；

The clock recovery unit 34, for extracting reference clock from the downstream electrical signals received, and will be described Reference clock is exported to timing unit 34 again in the photoelectricity optical repeater 23 where itself；

Timing unit 34 again, the OLT receivers 32 for receiving in the photoelectricity optical repeater 23 where itself export Uplink electrical signals, timing again is carried out to the uplink electrical signals using the reference clock received, and will be upper after timing again Horizontal electrical signal is exported to the ONU transceiver 31 in the photoelectricity optical repeater where itself.

Preferably, the wavelength of the preset light wave for bearing downlink optical signal and third are multiple in the photoelectricity optical repeater It is identical for carrying the wavelength of light wave of the downlink optical signal in the downlink optical signal sent with/demultiplexer 30；

The third multiplexing demultiplexing device 30, specifically for the downlink optical signal from optical splitter to be decomposed under the roads m Traveling optical signal, and respectively exported the roads m downlink optical signal respectively according to the wavelength for the light wave for carrying each road downlink optical signal To Wavelength matched photoelectricity optical repeater.

For the length in Figure 19 away from box, removes and include the first multiplexing demultiplexing device 20, the second multiplexing demultiplexing device 29,1：4 Outside coupler 22, image intensifer OA 21, n photoelectricity optical repeater 23, current divider 24 and local management unit 25, further include：The One smooth diplexer 27, third multiplexing demultiplexing device 30 and n embedded ONT Optical Network Terminal EONT 36,36 Hes of n EONT The n photoelectricity optical repeater 23 corresponds, and the photoelectricity optical repeater further includes：Timing unit 35 again, wherein：

The first smooth diplexer 27, detaches for the optical signal to reception, and the first multiplexing/solution is come from receiving When the uplink optical signal that multiplexer 20 exports, which is exported to H-OLT, the downlink from H-OLT is being received When optical signal, which is exported to current divider 24；

The current divider 24, the downlink optical signal for exporting the first smooth diplexer 27 are divided into two-way, and output all the way is given Third multiplexing demultiplexing device 30 is exported all the way to image intensifer 21.

The third multiplexing demultiplexing device 30, the downlink optical signal for exporting current divider 24 are decomposed into the roads m downlink light Signal is simultaneously exported respectively to m EONT 36, wherein in the downlink optical signal of the roads m, carries the light wave per road downlink optical signal Wavelength it is different, the m be more than 1 and less than or equal to n positive integer；

The EONT 36, for the downlink optical signal received to be converted to downstream electrical signals, from the downstream electrical signals Reference clock is extracted, reference clock is exported to the timing unit again in corresponding photoelectricity optical repeater, by the downlink electrical Signal is exported to local management unit；

Timing unit 35 again, for receiving the OLT receivers output in the photoelectricity optical repeater where itself Horizontal electrical signal, the reference clock exported using the EONT 36 carry out timing again to the uplink electrical signals, and will be again after timing Uplink electrical signals export to the ONU transceiver 31 in the photoelectricity optical repeater where itself.

Preferably, in the photoelectricity optical repeater 23 wavelength of the preset light wave for bearing downlink optical signal with, with The wavelength of the preset light wave for carrying the downlink optical signal is identical in its corresponding EONT 36, preset in the EONT In the downlink optical signal that the wavelength of light wave for bearing downlink optical signal is sent with third multiplexing demultiplexing device 30, for holding The wavelength for carrying the light wave of the downlink optical signal is identical；

The third multiplexing demultiplexing device 30, is decomposed into specifically for the downlink optical signal for exporting current divider 24 under the roads m Traveling optical signal, and respectively exported the roads m downlink optical signal respectively according to the wavelength for the light wave for carrying each road downlink optical signal To Wavelength matched EONT 36.

Preferably, the logic unit 33 in the photoelectricity optical repeater is additionally operable to, when the detection signal of reception is effective, refer to Show that again timing unit resets the register of its own, alternatively, in the detection invalidating signal of reception, timing is single again for instruction Member resets the register of its own.

Preferably, the length further includes away from box：

Second smooth diplexer 28 comes from 1 for being detached to the optical signal received receiving：N couplers it is upper When traveling optical signal, which is exported to the second multiplexing demultiplexing device 29, the downlink light from OA 21 is being received When signal, which is exported to 1：N couplers 22.

Preferably, the described second smooth diplexer and the second multiplexing demultiplexing device are connected by multimode fibre, and described second is multiple With/be connected by multimode fibre between demultiplexer and n photoelectricity optical repeater.

Preferably, the described first smooth diplexer 27 is wave-division multiplexer filter or optical circulator；Second smooth diplexer 28 is Wave-division multiplexer filter or optical circulator.

Preferably, the length is applied to away from box in the passive optical network of Wave time division mixed multiplexing.

Embodiment five

Length based on above-described embodiment two and embodiment three proposes a kind of to uplink optical signal away from box, the embodiment of the present invention five Processing method, such as Figure 20, the method includes：

Step 101：1：N couplers believe the uplink linght of each optical splitter when receiving the uplink optical signal of each optical splitter It number is coupled as exporting afterwards all the way and gives photoelectricity optical repeater.

Step 102：Photoelectricity optical repeater pair 1：The uplink optical signal of N couplers output carries out reshaping and amplifies again, and It exports to OLT.

Preferably, photoelectricity optical repeater pair 1：After the uplink optical signal of N couplers output carries out reshaping and amplifies again, The method further includes：

Current divider receives reshaping and again amplified uplink optical signal, and outputs this to OLT；

Preferably, photoelectricity optical repeater pair 1：The uplink optical signal of N couplers output carries out reshaping and amplifies again specific For：

OLT receivers are to coming from 1：The uplink optical signal of N couplers carries out opto-electronic conversion and is exported after amplifying reshaping again To ONU transceiver；

ONU transceiver is to output after carrying out electro-optic conversion from the uplink electrical signals of OLT receivers to OLT.

Preferably, the photoelectricity optical repeater pair 1：N couplers output uplink optical signal carry out reshaping, amplify again and Timing again, and export to OLT.

Wherein, the photoelectricity optical repeater carries out uplink optical signal the specific implementation of timing again and refers to embodiment One and embodiment two, details are not described herein again.

Embodiment six

Based on the length in above-described embodiment two and embodiment three away from box, the embodiment of the present invention six proposes a kind of to downlink light letter Number processing method, such as Figure 21, the method includes：

Step 201：OA puts the downlink optical signal when receiving the downlink optical signal from optical line terminal OLT Big and output is to 1：N couplers；

Step 202：1：The downlink optical signal of the output of photoelectricity optical repeater is divided into the roads N by N couplers, and output is given respectively The N number of optical splitter being connected with itself.

Preferably, before the downlink optical signal received is carried out reshaping and amplified again by photoelectricity optical repeater, the side Method further includes：

Downlink optical signal from OLT is divided into two-way by current divider, is exported all the way to local management unit, another way output To the OA；

Local management unit carries out parameter configuration according to the downlink optical signal received to photoelectricity optical repeater.

Embodiment seven

Based on the length in above-described embodiment four away from box, the embodiment of the present invention seven proposes a kind of processing side to downlink optical signal Method includes the following steps as shown in figure 22：

Step 301：1：N couplers are when receiving the uplink optical signal from coupled each optical splitter, by each point The uplink optical signal of light device is coupled as being exported afterwards all the way to the second multiplexing demultiplexing device；

Step 302：Second multiplexing demultiplexing device is by 1：It is decomposed into the roads k uplink linght in the uplink optical signal of N couplers output Signal, and exported respectively to k photoelectricity optical repeater, wherein in the traveling optical signal of the roads k, carry per road traveling optical signal Light wave wavelength it is different, the k be more than 1 and less than or equal to n positive integer；

Step 303：K photoelectricity optical repeater respectively carries out again the uplink optical signal of the second multiplexing demultiplexing device output Shaping and after amplifying again output to the first multiplexing demultiplexing device；

Step 304：The uplink optical signal that k photoelectricity optical repeater exports is combined on the way by the first multiplexing demultiplexing device Traveling optical signal, and export to H-OLT.

Embodiment eight

Based on the length in above-described embodiment four away from box, the embodiment of the present invention six proposes a kind of processing side to downlink optical signal Method includes the following steps as shown in figure 23：

Step 401：OA amplifies the downlink optical signal and exports to 1 when receiving the downlink optical signal from H-OLT：N Coupler；

Step 402：1：The OA downlink optical signals exported are divided into the roads N by N couplers, and output gives what itself was connected respectively N number of optical splitter.

Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art God and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies Within, then the present invention is also intended to include these modifications and variations.

Claims (18)

1. a kind of photoelectricity optical repeater, which is characterized in that the photoelectricity optical repeater includes：Optical network unit ONU transceiver and Optical line terminal OLT receiver；

The OLT receivers, for output after the uplink optical signal of reception is carried out opto-electronic conversion and amplifies reshaping again to ONU Transceiver；

The ONU transceiver, for being exported after carrying out electro-optic conversion from the uplink electrical signals of OLT receivers；

Wherein, the photoelectricity optical repeater further includes：Clock recovery unit and again timing unit；The ONU transceiver, is additionally operable to Receive third multiplexing demultiplexing device output downlink optical signal, and by the downlink optical signal be converted to downstream electrical signals export to The clock recovery unit in photoelectricity optical repeater where itself, the clock recovery unit, for from the downlink electrical received Reference clock is extracted in signal, and the reference clock is exported to the timing list again into the photoelectricity optical repeater where itself Member；The timing unit again, the uplink telecommunications for receiving the OLT receivers output in the photoelectricity optical repeater where itself Number, timing again is carried out to the uplink electrical signals using the reference clock received, and the uplink electrical signals after timing again are defeated Go out to the ONU transceiver in the photoelectricity optical repeater where itself；It is preset in the photoelectricity optical repeater to be used for bearing downlink In the downlink optical signal that the wavelength of the light wave of optical signal is sent with the third multiplexing demultiplexing device, for carrying the downlink light The wavelength of the light wave of signal is identical.

2. photoelectricity optical repeater as described in claim 1, which is characterized in that the photoelectricity optical repeater further includes：Logic list Member；

The OLT receivers are additionally operable to export detection signal to logic unit, when which is signal detection SD signals, It is effective when OLT receivers receive uplink optical signal to detect signal, is high level；The detection signal is dropout LOS signals When, detection signal is effective when OLT receivers do not receive uplink optical signal, is low level；

The logic unit, for the detection signal of reception be SD signals and detection invalidating signal when, instruction ONU transceiver and OLT receivers stop executing the operation for uplink optical signal, and in the detection signal of reception be SD signals and detection signal is effective When, indicate that ONU transceiver and OLT receivers execute the operation for uplink optical signal；It is LOS signals in the detection signal of reception And detection signal it is effective when, indicate that ONU transceiver and OLT receivers stop executing the operation for uplink optical signal, receiving Detection signal when being LOS signals and detection invalidating signal, indicate that ONU transceiver and OLT receivers are executed and believe for uplink linght Number operation.

3. photoelectricity optical repeater as claimed in claim 2, which is characterized in that

The logic unit is additionally operable to when the detection signal of reception is effective, indicates register of the timing unit to its own again It is resetted, alternatively, in the detection invalidating signal of reception, timing unit resets the register of its own again for instruction.

4. a kind of length is away from box, which is characterized in that the length includes away from box：Photoelectricity optical repeater, 1：N couplers and image intensifer OA；

The OA, for output after being amplified to the downlink optical signal from optical line terminal OLT to 1：N couplers；

Described 1：N couplers, the downlink optical signal for exporting OA are divided into the roads N, and respectively output give itself be connected it is N number of Optical splitter, and the uplink optical signal that each optical splitter exports is coupled as exporting afterwards all the way and gives photoelectricity optical repeater；

The photoelectricity optical repeater, for coming from 1：The uplink optical signal of N couplers carries out reshaping and amplifies again, and exports To OLT；

Wherein, the photoelectricity optical repeater further includes：Clock recovery unit and again timing unit；ONU transceiver is additionally operable to receive The downlink optical signal of third multiplexing demultiplexing device output, and the downlink optical signal is converted into downstream electrical signals and is exported to itself Clock recovery unit in the photoelectricity optical repeater at place, the clock recovery unit, for from the downstream electrical signals received In extract reference clock, and the reference clock is exported to the timing unit again in the photoelectricity optical repeater where itself； The timing unit again, the uplink electrical signals for receiving the OLT receivers output in the photoelectricity optical repeater where itself, profit Timing again is carried out to the uplink electrical signals with the reference clock received, and the uplink electrical signals after timing again are exported to certainly The ONU transceiver in photoelectricity optical repeater where body；It is preset in the photoelectricity optical repeater to be used for bearing downlink optical signal Light wave the downlink optical signal that sends of wavelength and the third multiplexing demultiplexing device in, for carrying the downlink optical signal The wavelength of light wave is identical.

5. as claimed in claim 4 long away from box, which is characterized in that the length further includes away from box：Current divider and local management list Member；

The current divider is exported all the way to local management unit for the downlink optical signal from OLT to be divided into two-way, another Road is exported to the OA, and the uplink optical signal that the photoelectricity optical repeater exports is forwarded to OLT；

The local management unit is matched for carrying out parameter to photoelectricity optical repeater and OA according to the downlink optical signal received It sets, and local parameter information is reported to OLT.

6. as claimed in claim 5 long away from box, which is characterized in that the photoelectricity optical repeater includes：ONU transceiver and OLT Receiver；

The OLT receivers, for coming from 1：After the uplink optical signal of N couplers carries out opto-electronic conversion and amplifies reshaping again It exports to ONU transceiver；

The ONU transceiver, for being exported to current divider after carrying out electro-optic conversion from the uplink electrical signals of OLT receivers.

7. as claimed in claim 6 long away from box, which is characterized in that the photoelectricity optical repeater further includes：Logic unit；

The OLT receivers are additionally operable to export detection signal to logic unit, when which is signal detection SD signals, Detection signal receives 1 in OLT receivers：It is effective when the uplink optical signal of the output of N couplers, it is high level, detection letter When number being dropout LOS signals, detection signal does not receive 1 in OLT receivers：When the uplink optical signal of N couplers output Effectively, it is low level；

The logic unit, for the detection signal of reception be SD signals and detection invalidating signal when, instruction ONU transceiver and OLT receivers stop executing the operation for uplink optical signal, and in the detection signal of reception be SD signals and detection signal is effective When, indicate that ONU transceiver and OLT receivers execute the operation for uplink optical signal；It is LOS signals in the detection signal of reception And detection signal it is effective when, indicate that ONU transceiver and OLT receivers stop executing the operation for uplink optical signal, receiving Detection signal when being LOS signals and detection invalidating signal, indicate that ONU transceiver and OLT receivers are executed and believe for uplink linght Number operation.

8. a kind of length is away from box, which is characterized in that the length includes away from box：N photoelectricity optical repeater, 1：N couplers, first are answered It is the positive integer more than 1 with/demultiplexer, the second multiplexing demultiplexing device and image intensifer OA, the N, the n is more than 1 Positive integer；

The OA, for output after being amplified to the downlink optical signal from mixing optical line terminal H-OLT to 1：N is coupled Device；

Described 1：N couplers, the downlink optical signal for exporting OA are divided into the roads N, and respectively output give itself be connected it is N number of Optical splitter, and the uplink optical signal that each optical splitter exports is coupled as being exported afterwards all the way to the second multiplexing demultiplexing device；

Second multiplexing demultiplexing device, for 1 will to be come from：The uplink optical signal of N couplers is decomposed into the roads k traveling optical signal, And export to k photoelectricity optical repeater, wherein in the traveling optical signal of the roads k, carry the wave of the light wave per road traveling optical signal Length is different, and the k is the positive integer more than 1 and less than or equal to n；

The photoelectricity optical repeater, for will carry out reshaping from the uplink optical signal of the second multiplexing demultiplexing device and put again Output is to the first multiplexing demultiplexing device after big；

First multiplexing demultiplexing device, for the roads the k traveling optical signal from photoelectricity optical repeater to be combined into uplink linght all the way Signal, and export to H-OLT；

Wherein, the photoelectricity optical repeater further includes：Clock recovery unit and again timing unit；ONU transceiver is additionally operable to receive The downlink optical signal of third multiplexing demultiplexing device output, and the downlink optical signal is converted into downstream electrical signals and is exported to itself Clock recovery unit in the photoelectricity optical repeater at place, the clock recovery unit, for from the downstream electrical signals received In extract reference clock, and the reference clock is exported to the timing unit again in the photoelectricity optical repeater where itself； The timing unit again, the uplink electrical signals for receiving the OLT receivers output in the photoelectricity optical repeater where itself, profit Timing again is carried out to the uplink electrical signals with the reference clock received, and the uplink electrical signals after timing again are exported to certainly The ONU transceiver in photoelectricity optical repeater where body；It is preset in the photoelectricity optical repeater to be used for bearing downlink optical signal Light wave the downlink optical signal that sends of wavelength and the third multiplexing demultiplexing device in, for carrying the downlink optical signal The wavelength of light wave is identical.

9. as claimed in claim 8 long away from box, which is characterized in that preset for carrying uplink in the photoelectricity optical repeater In the uplink optical signal that the wavelength of the light wave of optical signal and the second multiplexing demultiplexing device are sent, for carrying the uplink optical signal Light wave wavelength it is identical；

Second multiplexing demultiplexing device is specifically used for that 1 will be come from：The uplink optical signal of N couplers is decomposed into the roads k uplink linght Signal, and respectively exported the roads k traveling optical signal to wave respectively according to the wavelength for the light wave for carrying each road traveling optical signal Long matched photoelectricity optical repeater.

10. as claimed in claim 8 long away from box, which is characterized in that the length further includes away from box：Current divider and local management list Member；

The current divider is exported to local management unit, separately all the way for the downlink optical signal from H-OLT to be divided into two-way It is exported all the way to the OA, and the uplink optical signal that first multiplexing demultiplexing device exports is forwarded to H-OLT；

The local management unit is matched for carrying out parameter to photoelectricity optical repeater and OA according to the downlink optical signal received It sets, and local parameter information is reported to H-OLT.

11. as claimed in claim 10 long away from box, which is characterized in that the photoelectricity optical repeater includes：ONU transceiver and OLT receivers；

The OLT receivers, for carrying out opto-electronic conversion to the uplink optical signal from the second multiplexing demultiplexing device and amplifying again Output is to the ONU transceiver in the photoelectricity optical repeater where itself after reshaping；

The ONU transceiver, for multiple to first to output after carrying out electro-optic conversion from the uplink electrical signals of OLT receivers With/demultiplexer.

12. as claimed in claim 11 long away from box, which is characterized in that the photoelectricity optical repeater further includes：Logic unit；

The OLT receivers are additionally operable to export detection signal to logic unit, when which is signal detection SD signals, Detection signal is effective when OLT receivers receive the uplink optical signal of the second multiplexing demultiplexing device output, is high level, should When detection signal is dropout LOS signals, detection signal does not receive the output of the second multiplexing demultiplexing device in OLT receivers Uplink optical signal when it is effective, be low level；

The logic unit, for the detection signal of reception be SD signals and detection invalidating signal when, instruction ONU transceiver and OLT receivers stop executing the operation for uplink optical signal, and in the detection signal of reception be SD signals and detection signal is effective When, indicate that ONU transceiver and OLT receivers execute the operation for uplink optical signal；It is LOS signals in the detection signal of reception And detection signal it is effective when, indicate that ONU transceiver and OLT receivers stop executing the operation for uplink optical signal, receiving Detection signal when being LOS signals and detection invalidating signal, indicate that ONU transceiver and OLT receivers are executed and believe for uplink linght Number operation.

13. as claimed in claim 12 long away from box, which is characterized in that the length further includes away from box：The double news of optical splitter, the first light Device and third multiplexing demultiplexing device；The ONU transceiver includes uplink optical signal emission port and downlink optical signal receiving terminal Mouthful；

The first smooth diplexer, detaches for the optical signal to reception, and the first multiplexing demultiplexing device is come from receiving Uplink optical signal emission port output uplink optical signal when, which is exported to current divider, receiving come From the downlink optical signal of current divider when, which is exported to optical splitter；

The optical splitter, for the downlink optical signal of the first smooth diplexer output to be divided into two-way, and will wherein export all the way to Third multiplexing demultiplexing device, another way are exported to OA；

The third multiplexing demultiplexing device, for the downlink optical signal from optical splitter to be decomposed into the roads m downlink optical signal, point It does not export to the downlink optical signal receiving port of the ONU transceiver in m photoelectricity optical repeater, wherein the roads m downlink light is believed In number, the wavelength carried per the light wave of road downlink optical signal is different, and the m is the positive integer more than 1 and less than or equal to n.

14. as claimed in claim 13 long away from box, which is characterized in that

The third multiplexing demultiplexing device, the downlink light specifically for the downlink optical signal from optical splitter to be decomposed into the roads m are believed Number, and respectively exported the roads m downlink optical signal to wavelength respectively according to the wavelength for the light wave for carrying each road downlink optical signal Matched photoelectricity optical repeater.

15. a kind of length using described in claim 4 is away from box to the processing method of uplink optical signal, which is characterized in that the side Method includes：

1：The uplink optical signal of each optical splitter is coupled as all the way by N couplers when receiving the uplink optical signal of each optical splitter After export and give photoelectricity optical repeater；

Photoelectricity optical repeater pair 1：The uplink optical signal of N couplers output carries out reshaping and amplifies again, and exports to OLT.

16. a kind of length using described in claim 4 is away from box to the processing method of downlink optical signal, which is characterized in that the side Method includes：

The downlink optical signal is amplified and is exported to 1 when receiving the downlink optical signal from optical line terminal OLT by OA：N Coupler；

1：The OA downlink optical signals exported are divided into the roads N by N couplers, and output gives itself connected N number of light splitting respectively Device.

17. it is a kind of using length according to any one of claims 8 away from box to the processing method of uplink optical signal, which is characterized in that the side Method includes：

1：N couplers are when receiving the uplink optical signal from coupled each optical splitter, by the uplink linght of each optical splitter Signal is coupled as being exported afterwards all the way to the second multiplexing demultiplexing device；

Second multiplexing demultiplexing device is by 1：The roads k traveling optical signal is decomposed into the uplink optical signal of N couplers output, and respectively It exports to k photoelectricity optical repeater, wherein in the traveling optical signal of the roads k, carry the wavelength of the light wave per road traveling optical signal Different, the k is the positive integer more than 1 and less than or equal to n；

K photoelectricity optical repeater carries out reshaping to the uplink optical signal of the second multiplexing demultiplexing device output respectively and amplifies again After export to the first multiplexing demultiplexing device；

The uplink optical signal that k photoelectricity optical repeater exports is combined into uplink optical signal all the way by the first multiplexing demultiplexing device, and defeated Go out to H-OLT.

18. it is a kind of using length according to any one of claims 8 away from box to the processing method of downlink optical signal, which is characterized in that the side Method includes：

OA amplifies the downlink optical signal and exports to 1 when receiving the downlink optical signal from H-OLT：N couplers；

1：The OA downlink optical signals exported are divided into the roads N by N couplers, and output gives itself connected N number of optical splitter respectively.