CN106330316A - Multi-wavelength OTN ultra-long-haul span transmission method and system - Google Patents
Multi-wavelength OTN ultra-long-haul span transmission method and system Download PDFInfo
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- CN106330316A CN106330316A CN201510354268.XA CN201510354268A CN106330316A CN 106330316 A CN106330316 A CN 106330316A CN 201510354268 A CN201510354268 A CN 201510354268A CN 106330316 A CN106330316 A CN 106330316A
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Abstract
The invention discloses a multi-wavelength OTN ultra-long-haul span transmission method and a multi-wavelength OTN ultra-long-haul span transmission system, which relate to the field of optical fiber transmission and can extend the distance of optical transmission, thereby guaranteeing multi-wavelength ultra-long-haul span transmission. The multi-wavelength OTN ultra-long-haul span transmission method comprises the steps of: transmitting multi-path optical signals transmitted by a transmitting end to a first transmission optical fiber for transmission; transmitting the multi-path optical signals transmitted by the first transmission optical fiber to a remote pump system for amplification; and transmitting the multi-path optical signals amplified by the remote pump system to a second transmission optical fiber for transmission, and then transmitting the multi-path optical signals to a receiving end. The multi-wavelength OTN ultra-long-haul span transmission method and the multi-wavelength OTN ultra-long-haul span transmission system are suitable for optical fiber transmission.
Description
Technical field
The present invention relates to fiber-optic transfer field, particularly relate to a kind of multi-wavelength OTN (optical transfer network, Optical
Transport Network) ultra long haul span transmission method and system.
Background technology
Along with developing rapidly of society, the supply of electric power is more and more important.Wherein, due to region and natural bar
The restriction of part, it is impossible to set up active relaying in transmission link, or use the operation after active relaying and dimension
Operator cannot be born for the expense of repairing, and ultra long haul span transmission technology develops therewith.At present, ultra long haul span
Transmission system mainly uses distant pump amplifying technique.
At present, existing distant pump amplifying technique mainly embeds one section of erbium-doped fiber when laying Transmission Fibers,
The pump light provided by remote station, the amplification to transmission optical signal.But existing distant pump amplifying technique
When reducing light loss and providing high-gain, it is difficult to control light amplifier gain flat degree, causes each channel
Can be widely different, thus limit transmission range.
Summary of the invention
In view of this, the present invention provides a kind of multi-wavelength OTN ultra long haul span transmission method and system, mainly
Purpose is to extend the distance of optical transport, thus ensures that multi-wavelength ultra long haul span is transmitted.
According to one aspect of the present invention, it is provided that a kind of multi-wavelength OTN ultra long haul span transmission method: including:
The multipath light signal sent through transmitting terminal is sent to the first Transmission Fibers be transmitted, wherein, institute
State transmitting terminal and be provided with forward direction raman amplifier；
It is sent in Remote optical pumping amplifier put by described multipath light signal after the first Transmission Fibers transmission
Greatly, wherein, described Remote optical pumping amplifier includes remote optical pumping amplifier and by preset optical cable and described remote optical pumping amplifier
Connect cable junction box, three optical fiber in preset optical cable connect respectively described remote optical pumping amplifier input,
Outfan, pumping end；
Described multipath light signal after Remote optical pumping amplifier amplifies is sent to after the second Transmission Fibers is transmitted
Being sent to receiving terminal, wherein, receiving terminal is provided with a backward raman amplifier.
According to another aspect of the present invention, it is provided that a kind of multi-wavelength OTN ultra long haul span transmission system, including:
Transmitting terminal, is used for sending multipath light signal, and wherein, described transmitting terminal is provided with forward direction raman amplifier；
First Transmission Fibers, for being transmitted the multipath light signal that described transmitting terminal sends；
Remote optical pumping amplifier, for the multipath light signal after described first Transmission Fibers transmission is amplified,
Wherein, described Remote optical pumping amplifier is included remote optical pumping amplifier and is connected with described remote optical pumping amplifier by preset optical cable
Cable junction box, three fiber cores in described preset optical cable connect the input of described remote optical pumping amplifier respectively
End, outfan, pumping end；
Second Transmission Fibers, for being transmitted the multipath light signal after described Remote optical pumping amplifier amplifies；
Receiving terminal, for receiving the multipath light signal after described second Transmission Fibers transmission, wherein, receives
End is provided with a backward raman amplifier.
By technique scheme, the technical scheme that the embodiment of the present invention provides at least has the advantage that
The present invention provides a kind of multi-wavelength OTN ultra long haul span transmission method and system, first, will through
The multipath light signal that sending end sends is sent to the first Transmission Fibers and is transmitted；Wherein, described transmitting terminal is provided with
Forward direction raman amplifier, is then sent to distant by described multipath light signal after the first Transmission Fibers transmission
Pumping system is amplified；Wherein, described Remote optical pumping amplifier include remote optical pumping amplifier and by preset optical cable with
The cable junction box that described remote optical pumping amplifier connects, three fiber cores in described preset optical cable connect institute respectively
State the input of remote optical pumping amplifier, outfan, pumping end；By described multichannel after Remote optical pumping amplifier amplifies
Optical signal is sent to be sent to receiving terminal after the second Transmission Fibers is transmitted, and wherein, receiving terminal is provided with backward
Raman amplifier.Compared with existing distant pump amplifying technique, the present invention is by arranging forward direction Raman at transmitting terminal
Amplifier, after receiving terminal is arranged to raman amplifier, it is possible to increase transmission gain such that it is able to extend
The distance of optical transport, it is ensured that multi-wavelength ultra long haul span is transmitted.
Accompanying drawing explanation
Fig. 1 shows the stream of a kind of multi-wavelength OTN ultra long haul span transmission method that the embodiment of the present invention provides
Cheng Tu；
Fig. 2 shows that a kind of multi-wavelength OTN ultra long haul span that the embodiment of the present invention provides transmits showing of system
It is intended to；
Fig. 3 shows the schematic diagram of the transmission cable fibre core that the embodiment of the present invention provides；
Fig. 4 shows the remote optical pumping amplifier and cable junction box annexation figure that the embodiment of the present invention provides.
Detailed description of the invention
The present invention is described in further detail with embodiment below in conjunction with the accompanying drawings.
The embodiment of the present invention provides a kind of multi-wavelength OTN ultra long haul span transmission method, as it is shown in figure 1, institute
The method of stating includes:
101, the multipath light signal sent through transmitting terminal is sent to the first Transmission Fibers be transmitted.
Wherein, described transmitting terminal is provided with forward direction raman amplifier, and described Remote optical pumping amplifier includes remote optical pumping amplifier
With the cable junction box being connected with described remote optical pumping amplifier by preset optical cable, three in described preset optical cable
Fiber cores connects the input of described remote optical pumping amplifier, outfan, pumping end respectively.By setting at transmitting terminal
Put forward direction raman amplifier, by increasing capacitance it is possible to increase the gain in transmitting procedure, thus increase transmission span.Transmitting terminal
Can include fibre distribution frame and optical amplifier apparatus, optical amplifier apparatus can comprise optical module, wave multiplexer, color
Dissipate precompensation module, power amplifier, forward direction raman amplifier etc..Described multipath light signal can comprise
40 road optical signals.Such as, optical module can include that C21 wavelength light module is to C60 wavelength light module, conjunction ripple
Device includes C21-C60 port, the emission port of C21 wavelength light module to C60 wavelength light module respectively with close ripple
The C21-C60 port of device is corresponding to be attached.First Transmission Fibers can be OPGW
(Optical Fiber Composite Overhead Ground Wire, OPGW optical cable), its Dispersive parameter
Preferably and attenuation quotient is little, ultra-long span transmission is suitable to.
For the embodiment of the present invention, step 101 is specifically as follows: the multi-path light letter sent by described transmitting terminal
Number carry out closing ripple to process.Wherein, the optical module of transmitting terminal for sending the optical signal of different wave length, then
The optical signal of multiple different wave length carries out closing ripple and processes.Described multipath light signal after closing ripple and processing is sent out
Deliver to dispersion pre-compensation module is transmitted, multipath light signal is carried out dispersion pre-compensation；By described process
Multipath light signal after dispersion pre-compensation is sent in power amplifier carry out optical signal power adjustment；By institute
State the multipath light signal after being adjusted to be sent to forward direction raman amplifier and be amplified；By described through forward direction
The multipath light signal that raman amplifier amplifies is sent to the first Transmission Fibers and is transmitted.
102, it is sent in Remote optical pumping amplifier carry out by described multipath light signal after the first Transmission Fibers transmission
Amplify.
Wherein, the first Transmission Fibers transmission can be OPGW24 optical cable, and OPGW24 optical cable can have three optical fiber
Core, OPGW24-7 core, OPGW24-6 core, OPGW24-5 core.Described preset optical cable can be ADSS optical cable.
3 ports altogether of cable junction box, the first port is the input port of OPGW24 optical cable, second port
For the output port of OPGW24 optical cable, the 3rd port is the port connecting remote optical pumping amplifier, passes through ADSS
Cable junction box is connected by optical cable with remote optical pumping amplifier.
For the embodiment of the present invention, also include that the first end passes to the first end to the second end transmission direction and the second end
Defeated direction, when transmit direction be the first end to the transmission direction of the second end time, the first end is transmitting terminal, second
End is receiving terminal；When transmit direction be the second end to the transmission direction of the first end time, the second end is transmitting terminal,
First end is receiving terminal.Described first end is total to the first end transmission direction to the second end transmission direction and the second end
With an optical cable transmission optical signal, it is specifically as follows: described first end is to the second end transmission direction, by light
First fiber cores transmission optical signal of cable；Described second end is to the first end transmission direction, by the of optical cable
Two fiber cores transmission optical signals；Described first end transmits to the first end to the second end transmission direction and the second end
Direction, by sharing the 3rd fiber cores transmission pump light.Such as, as in figure 2 it is shown, when transmitting direction be
First end is when the transmission direction of the second end, and the first end is transmitting terminal, and the second end is receiving terminal, passes through
OPGW24-7 core is transmitted optical signal；When transmit direction be the second end to the transmission direction of the first end time, the
Two ends are transmitting terminal, and the first end is receiving terminal, is transmitted optical signal by OPGW24-6 core；Described first
The pump light to the first end transmission direction to the second end transmission direction and the second end is held to share a fiber cores,
OPGW24-5 core is transmitted.
Wherein, the first end connects the pre-of remote optical pumping amplifier and cable junction box on the transmission direction of the second end
Put optical cable specification and the second end and connect remote optical pumping amplifier and cable junction box on the transmission direction of the first end
Preset optical cable specification can be identical.When the first end is to the transmission direction of the second end, remote optical pumping amplifier and optical cable
The annexation that rosette is attached by preset optical cable, as Fig. 3, OPGW24-7 core connects ADSS optical cable
One end of first fiber cores, the other end of first fiber cores of ADSS optical cable connects remote optical pumping amplifier
Input, one end of second fiber cores of ADSS optical cable connects the pumping end of remote optical pumping amplifier, ADSS optical cable
The other end of second light core connect OPGW24-5 core, the 3rd fiber cores one end of ADSS optical cable connects distant
The outfan of pump amplifier, the 3rd fiber cores other end of ADSS optical cable connect with the outfan of remote optical pumping amplifier
Connect OPGW24-7 core,；When the second end is to the transmission direction of the first end, OPGW24-6 core connects ADSS optical cable
One end of first fiber cores, the other end of first fiber cores of ADSS optical cable connects remote optical pumping amplifier
Input, ADSS optical cable second fiber cores one end connect remote optical pumping amplifier pumping end, ADSS optical cable
The other end of second light core connect OPGW24-5 core, the 3rd fiber cores one end of ADSS optical cable connects distant
The outfan of pump amplifier, ADSS optical cable the 3rd fiber cores other end remote optical pumping amplifier outfan connect
OPGW24-6 core.The first end remote optical pumping amplifier on the transmission direction of the second end is connected respectively by preset optical cable
On the transmission direction of the first end, remote optical pumping amplifier and cable junction box can with cable junction box and the second end
Realize the pump light with a fiber-optic transfer two transmission direction such that it is able to balance forward direction raman amplifier,
Remote optical pumping amplifier, the gain of remote optical pumping amplifier, and then transporting can be ensured while ensureing long range propagation
Energy.
For the embodiment of the present invention, described remote optical pumping amplifier includes distant pump pump unit and described distant pump gain list
Unit；Step 102 is specifically as follows: by the described multipath light signal and described through the first Transmission Fibers transmission
The pump light that distant pump pump unit sends is amplified after being sent to described distant pump gain unit.
103, described multipath light signal after Remote optical pumping amplifier amplifies is sent to the second Transmission Fibers pass
Receiving terminal it is sent to after defeated.
Wherein, described receiving terminal is provided with backward raman amplifier, and receiving terminal can include fibre distribution frame and light
Multiplying arrangement.By after receiving terminal is also provided with to raman amplifier, it is possible to increase further in transmitting procedure
Gain, thus increase transmission span further.Optical amplifier apparatus can include optical module, channel-splitting filter, color
Dissipate precompensation module, power amplifier, forward direction raman amplifier, backward raman amplifier, dispersion compensation
Module, preamplifier etc..Such as, optical module can include that C21 wavelength light module is to C60 wavelength optical mode
Block, channel-splitting filter include C21-C60 port, the C21-C60 port of channel-splitting filter respectively with C21 wavelength light module
Corresponding to the emission port of C60 wavelength light module.Second Transmission Fibers can be OPGW optical cable, its dispersion
Index is preferable and attenuation quotient is little, is suitable to ultra-long span transmission.
For the embodiment of the present invention, described receiving terminal includes: backward raman amplifier, the first dispersion compensating fiber,
Second dispersion compensating fiber, preamplifier；Step 103 is specifically as follows: by described through the second transmission
The multipath light signal of fiber-optic transfer is sent to backward raman amplifier and is amplified；By described through backward Raman
The optical signal that amplifier amplifies is sent in described first dispersion compensating fiber and described second dispersion compensating fiber
It is transmitted, multipath light signal is carried out dispersion compensation again；By described after dispersion compensation again many
Road optical signal is sent in described preamplifier carry out optical signal power adjustment；By described through again adjusting
After optical signal carry out partial wave process after be sent to receiving terminal.
Wherein, described first Transmission Fibers is 285.876km with the length summation of described second Transmission Fibers.Institute
State a length of 205.859km of the first Transmission Fibers, a length of 80.017km of described second Transmission Fibers；
Or a length of 209.704km of described first Transmission Fibers, described second Transmission Fibers a length of
76.172km.When transmit direction be the first end to the transmission direction of the second end time, described first Transmission Fibers
A length of 205.859km, a length of 80.017km of described second Transmission Fibers；When transmission direction is second
End is when the transmission direction of the first end, and a length of 209.704km of described first Transmission Fibers, described second passes
Lose a length of 76.172km of fibre.
The present invention provides a kind of multi-wavelength OTN ultra long haul span transmission method, first, will send out through transmitting terminal
The multipath light signal sent is sent to the first Transmission Fibers and is transmitted；Wherein, described transmitting terminal be provided with one distant
Pump amplification system and forward direction raman amplifier, described Remote optical pumping amplifier includes remote optical pumping amplifier and by preset light
The cable junction box that cable is connected with described remote optical pumping amplifier, three fiber cores in described preset optical cable connect respectively
Connect the input of described remote optical pumping amplifier, outfan, pumping end；Then by described through the first Transmission Fibers
Multipath light signal after transmission is sent in Remote optical pumping amplifier be amplified；By described after Remote optical pumping amplifier amplifies
Multipath light signal be sent to be sent to receiving terminal after the second Transmission Fibers is transmitted, wherein, receiving terminal sets
There is backward raman amplifier.Compared with existing distant pump amplifying technique, the present invention is by before transmitting terminal is arranged
To raman amplifier, after receiving terminal is arranged to raman amplifier, it is possible to increase transmission gain, it is thus possible to
Enough extend the distance of optical transport, it is ensured that multi-wavelength ultra long haul span is transmitted.
The embodiment of the present invention provides a kind of multi-wavelength OTN ultra long haul span transmission system, as it is shown in figure 1, institute
The system of stating includes: transmitting terminal the 11, first Transmission Fibers 12, Remote optical pumping amplifier the 13, second Transmission Fibers 14,
Receiving terminal 15；
Described transmitting terminal 11, is used for sending multipath light signal, and wherein, described transmitting terminal 11 is provided with forward direction Raman
Amplifier；
Described first Transmission Fibers 12, for being transmitted the multipath light signal that described transmitting terminal 11 sends；
Described Remote optical pumping amplifier 13, for entering the multipath light signal after described first Transmission Fibers 12 is transmitted
Row amplifies, and wherein, described Remote optical pumping amplifier 13 includes remote optical pumping amplifier and by preset optical cable and described distant pump
The cable junction box that amplifier connects, three fiber cores in described preset optical cable connect described distant pump respectively and put
The big input of device, outfan, pumping end；
Described second Transmission Fibers 14, for entering the multipath light signal after described Remote optical pumping amplifier 13 amplifies
Row transmission；
Described receiving terminal 15, for receiving the multipath light signal after described second Transmission Fibers 14 transmission, its
In, receiving terminal is provided with backward raman amplifier.
Described transmitting terminal 11 also includes optical module, wave multiplexer, dispersion pre-compensation module, power amplifier；
Described optical module, for the multipath light signal sent；
Described wave multiplexer, the multipath light signal for being sent by described optical module carries out closing ripple and processes；
Described dispersion pre-compensation module, for carrying out dispersion by the multi-path light letter after described wave multiplexer closes ripple
Precompensation；
Described power amplifier, for by the multichannel after described dispersion pre-compensation module dispersion pre-compensation
Optical signal carries out power adjustment；
Described forward direction raman amplifier, for by the multipath light signal after described power amplifier adjusts
Send out and be amplified；
Described first Transmission Fibers 12, specifically for the multi-path light that will amplify through described forward direction raman amplifier
Letter is transmitted.
Described remote optical pumping amplifier includes: distant pump pump unit and distant pump gain unit；
Described distant pump pump unit, is used for sending pump light；
Described distant pump gain unit, for combining the pump light that described distant pump pump unit sends, will be through institute
The multipath light signal stating the first Transmission Fibers 12 transmission is amplified.
Described receiving terminal 15 also includes: backward raman amplifier, the first dispersion compensating fiber, the second dispersion are mended
Repay optical fiber, preamplifier, channel-splitting filter, optical module；
Described backward raman amplifier, for the multipath light signal that will transmit through described second Transmission Fibers 14
It is amplified；
Described first dispersion compensating fiber, for entering the optical signal amplified through described backward raman amplifier
Row dispersion compensation；
Described second dispersion compensating fiber, for by after described first dispersion compensating fiber dispersion compensation
Carry out dispersion compensation again；
Described preamplifier, for by many after described second dispersion compensating fiber dispersion compensation again
Road optical signal carries out power and again adjusts；
Described channel-splitting filter, for carrying out partial wave process by the optical signal after described adjustment again；
Described optical module, for receiving the multipath light signal after described channel-splitting filter partial wave.
Described optical cable has three fiber cores, and described first end transmits direction and the second end to the first end to the second end
Transmission direction shares an optical cable transmission optical signal and includes:
Described first end is to the second end transmission direction, by the first of optical cable fiber cores transmission optical signal；
Described second end is to the first end transmission direction, by the second of optical cable fiber cores transmission optical signal；
Described first end transmits direction to the second end transmission direction and the second end to the first end, by sharing the 3rd
Root fiber cores transmission pump light.
Wherein, described first Transmission Fibers is 285.876km with the length summation of described second Transmission Fibers.Institute
State a length of 205.859km of the first Transmission Fibers, a length of 80.017km of described second Transmission Fibers；
Or a length of 209.704km of described first Transmission Fibers, described second Transmission Fibers a length of
76.172km.When transmit direction be the first end to the transmission direction of the second end time, described first Transmission Fibers
A length of 205.859km, a length of 80.017km of described second Transmission Fibers；When transmission direction is second
End is when the transmission direction of the first end, and a length of 209.704km of described first Transmission Fibers, described second passes
Lose a length of 76.172km of fibre.
The present invention provides a kind of multi-wavelength OTN ultra long haul span transmission system, first, will send out through transmitting terminal
The multipath light signal sent is sent to the first Transmission Fibers and is transmitted；Wherein, described transmitting terminal is provided with forward direction and draws
Graceful amplifier, is then sent to Remote optical pumping amplifier by described multipath light signal after the first Transmission Fibers transmission
In be amplified；Wherein, described Remote optical pumping amplifier include remote optical pumping amplifier and by preset optical cable distant with described
The cable junction box that pump amplifier connects, three fiber cores in described preset optical cable connect described distant pump respectively
The input of amplifier, outfan, pumping end；By described multipath light signal after Remote optical pumping amplifier amplifies
Being sent to be sent to receiving terminal after the second Transmission Fibers is transmitted, wherein, receiving terminal is provided with backward Raman and puts
Big device.Compared with existing distant pump amplifying technique, the present invention by transmitting terminal arrange forward direction raman amplifier,
To raman amplifier after receiving terminal is arranged, it is possible to increase the gain of transmission such that it is able to extend optical transport
Distance, it is ensured that multi-wavelength ultra long haul span is transmitted.
Through the above description of the embodiments, those skilled in the art is it can be understood that arrive this
Bright can add the mode of required common hardware by software and realize, naturally it is also possible to by hardware, but a lot
In the case of the former is more preferably embodiment.Based on such understanding, technical scheme substantially or
Person says that the part contributing prior art can embody with the form of software product, and this computer is soft
Part product is stored in the storage medium that can read, such as the floppy disk of computer, and hard disk or CD etc., if including
Dry instruction is with so that a computer equipment (can be personal computer, server, or the network equipment
Deng) perform the method described in each embodiment of the present invention.
The above, the only detailed description of the invention of the present invention, but protection scope of the present invention is not limited to
This, any those familiar with the art, in the technical scope that the invention discloses, can readily occur in
Change or replacement, all should contain within protection scope of the present invention.Therefore, protection scope of the present invention should
It is as the criterion with described scope of the claims.
Claims (16)
1. a multi-wavelength OTN ultra long haul span transmission method, it is characterised in that including:
The multipath light signal sent through transmitting terminal is sent to the first Transmission Fibers be transmitted, wherein, institute
State transmitting terminal and be provided with forward direction raman amplifier；
It is sent in Remote optical pumping amplifier put by the multipath light signal after described first Transmission Fibers transmission
Greatly, wherein, described Remote optical pumping amplifier includes remote optical pumping amplifier and by preset optical cable and described remote optical pumping amplifier
The cable junction box connected, three fiber cores in described preset optical cable connect described remote optical pumping amplifier respectively
Input, outfan, pumping end；
Multipath light signal after described Remote optical pumping amplifier amplifies is sent to after the second Transmission Fibers is transmitted
Being sent to receiving terminal, wherein, receiving terminal is provided with a backward raman amplifier.
Multi-wavelength OTN ultra long haul span transmission method the most according to claim 1, it is characterised in that
Also include: the first end transmits direction to the second end transmission direction and the second end to the first end；When transmission direction is
First end is when the transmission direction of the second end, and the first end is transmitting terminal, and the second end is receiving terminal, and receiving terminal is
Transmitting terminal；When transmit direction be the second end to the transmission direction of the first end time, the second end is transmitting terminal, first
End is receiving terminal；
Described first end shares an optical cable to the second end transmission direction and the second end to the first end transmission direction and passes
Optical signals.
Multi-wavelength OTN ultra long haul span transmission method the most according to claim 1, it is characterised in that
Described transmitting terminal also includes: dispersion pre-compensation module, power amplifier；Described will send through transmitting terminal
Multipath light signal be sent to the step that the first Transmission Fibers is transmitted and include:
The multipath light signal sent by described transmitting terminal carries out closing ripple and processes；
It is sent in dispersion pre-compensation module be transmitted by the multipath light signal after described conjunction ripple processes,
Multipath light signal is carried out dispersion pre-compensation；
It is sent in power amplifier carry out optical signal merit by the multipath light signal after described dispersion compensation
Rate adjusts；
Multipath light signal after described adjustment is sent to forward direction raman amplifier be amplified；
The multipath light signal amplified through described forward direction raman amplifier is sent to the first Transmission Fibers pass
Defeated.
Multi-wavelength OTN ultra long haul span transmission method the most according to claim 1, it is characterised in that
Described remote optical pumping amplifier includes: distant pump pump unit and distant pump gain unit；Light is transmitted through first by described
The step that multipath light signal after fine transmission is sent to be amplified in Remote optical pumping amplifier includes:
The pump that multipath light signal and described distant pump pump unit through described first Transmission Fibers transmission is sent
Pu light is amplified after being sent to described distant pump gain unit.
Multi-wavelength OTN ultra long haul span transmission method the most according to claim 1, it is characterised in that
Described receiving terminal also includes: backward raman amplifier, the first dispersion compensating fiber, the second dispersion compensating fiber,
Preamplifier；Described by through described Remote optical pumping amplifier amplify after multipath light signal be sent to the second transmission light
Fibre is sent to the step of receiving terminal and includes after being transmitted:
Multipath light signal through described second Transmission Fibers transmission is sent to backward raman amplifier put
Greatly；
The optical signal amplified through described backward raman amplifier is sent to described first dispersion compensating fiber and
Described second dispersion compensating fiber is transmitted, multipath light signal is carried out dispersion compensation again；
Multipath light signal after described dispersion compensation again is sent in described preamplifier carry out light
Signal power adjusts；
It is sent to receiving terminal after optical signal after described adjustment again is carried out partial wave process.
Multi-wavelength OTN ultra long haul span transmission method the most according to claim 2, it is characterised in that
Described optical cable has three fiber cores, and described first end transmits to the first end to the second end transmission direction and the second end
Direction shares an optical cable transmission optical signal and includes:
First end is to the second end transmission direction, by the first of optical cable fiber cores transmission optical signal；
Second end is to the first end transmission direction, by the second of optical cable fiber cores transmission optical signal；
First end transmits direction to the second end transmission direction and the second end to the first end, by sharing the 3rd light
Fibre core transmission pump light.
7. transmit according to the multi-wavelength OTN ultra long haul span described in claim 1-4 any one claim
Method, it is characterised in that described first Transmission Fibers with the length summation of described second Transmission Fibers is
285.876km。
Multi-wavelength OTN ultra long haul span transmission method the most according to claim 7, it is characterised in that
The a length of 205.859km of described first Transmission Fibers, a length of 80.017km of described second Transmission Fibers；
Or a length of 209.704km of described first Transmission Fibers, described second Transmission Fibers a length of
76.172km。
9. a multi-wavelength OTN ultra long haul span transmission system, it is characterised in that including:
Transmitting terminal, is used for sending multipath light signal, and wherein, described transmitting terminal is provided with forward direction raman amplifier；
First Transmission Fibers, for being transmitted the multipath light signal that described transmitting terminal sends；
Remote optical pumping amplifier, for the multipath light signal after described first Transmission Fibers transmission is amplified,
Wherein, described Remote optical pumping amplifier is included remote optical pumping amplifier and is connected with described remote optical pumping amplifier by preset optical cable
Cable junction box, three fiber cores in described preset optical cable connect the input of described remote optical pumping amplifier respectively
End, outfan, pumping end；
Second Transmission Fibers, for being transmitted the multipath light signal after described Remote optical pumping amplifier amplifies；
Receiving terminal, for receiving the multipath light signal after described second Transmission Fibers transmission, wherein, receives
End is provided with a backward raman amplifier.
Multi-wavelength OTN ultra long haul span the most according to claim 9 transmission system, it is characterised in that
Also include: the first end transmits direction to the second end transmission direction and the second end to the first end；When transmission direction is
First end is when the transmission direction of the second end, and the first end is transmitting terminal, and the second end is receiving terminal, and receiving terminal is
Transmitting terminal；When transmit direction be the second end to the transmission direction of the first end time, the second end is transmitting terminal, first
End is receiving terminal；
Described first end shares an optical cable to the second end transmission direction and the second end to the first end transmission direction and passes
Optical signals.
11. multi-wavelength OTN ultra long haul span according to claim 9 transmission systems, it is characterised in that
Described transmitting terminal also includes: optical module, wave multiplexer, dispersion pre-compensation module, power amplifier；
Described optical module, for the multipath light signal sent；
Described wave multiplexer, the multipath light signal for being sent by described optical module carries out closing ripple and processes；
Described dispersion pre-compensation module, for carrying out dispersion by the multi-path light letter after described wave multiplexer closes ripple
Precompensation；
Described power amplifier, for by the multichannel after described dispersion pre-compensation module dispersion pre-compensation
Optical signal carries out power adjustment；
Described forward direction raman amplifier, for by the multipath light signal after described power amplifier adjusts
Send out and be amplified；
Described first Transmission Fibers, specifically for the multi-path light letter that will amplify through described forward direction raman amplifier
It is transmitted.
12. multi-wavelength OTN ultra long haul span according to claim 9 transmission systems, it is characterised in that
Described remote optical pumping amplifier includes: distant pump pump unit and distant pump gain unit；
Described distant pump pump unit, is used for sending pump light；
Described distant pump gain unit, for combining the pump light that described distant pump pump unit sends, will be through institute
The multipath light signal stating the first Transmission Fibers transmission is amplified.
13. multi-wavelength OTN ultra long haul span according to claim 9 transmission systems, it is characterised in that
Described receiving terminal also includes: backward raman amplifier, the first dispersion compensating fiber, the second dispersion compensating fiber,
Preamplifier, channel-splitting filter, optical module；
Described backward raman amplifier, for entering through the multipath light signal of described second Transmission Fibers transmission
Row amplifies；
Described first dispersion compensating fiber, for entering the optical signal amplified through described backward raman amplifier
Row dispersion compensation；
Described second dispersion compensating fiber, for by after described first dispersion compensating fiber dispersion compensation
Carry out dispersion compensation again；
Described preamplifier, for by many after described second dispersion compensating fiber dispersion compensation again
Road optical signal carries out power and again adjusts；
Described channel-splitting filter, for carrying out partial wave process by the optical signal after described adjustment again；
Described optical module, for receiving the multipath light signal after described channel-splitting filter partial wave.
14. multi-wavelength OTN ultra long haul span according to claim 10 transmission systems, it is characterised in that
Described optical cable has three fiber cores, and described first end transmits to the first end to the second end transmission direction and the second end
Direction shares an optical cable transmission optical signal and includes:
Described first end is to the second end transmission direction, by the first of optical cable fiber cores transmission optical signal；
Described second end is to the first end transmission direction, by the second of optical cable fiber cores transmission optical signal；
Described first end transmits direction to the second end transmission direction and the second end to the first end, by sharing the 3rd
Root fiber cores transmission pump light.
15. according to the multi-wavelength OTN ultra long haul span described in claim 11-14 any one claim
Transmission system, it is characterised in that described first Transmission Fibers with the length summation of described second Transmission Fibers is
285.876km。
16. multi-wavelength OTN ultra long haul span according to claim 15 transmission systems, it is characterised in that
The a length of 205.859km of described first Transmission Fibers, a length of 80.017km of described second Transmission Fibers；
Or a length of 209.704km of described first Transmission Fibers, described second Transmission Fibers a length of
76.172km。
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| CN201510354268.XA CN106330316A (en) | 2015-06-24 | 2015-06-24 | Multi-wavelength OTN ultra-long-haul span transmission method and system |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6263139B1 (en) * | 1998-11-09 | 2001-07-17 | Nippon Telegraph And Telephone Corporation | Optical transmission system with group velocity dispersion compensation |
| CN1749838A (en) * | 2004-09-15 | 2006-03-22 | 华为技术有限公司 | Light transmission system and light amplifying method used therein |
| CN103166708A (en) * | 2013-03-14 | 2013-06-19 | 武汉光迅科技股份有限公司 | Method for increasing output optical signal-to-noise ratio of remote pump system |
-
2015
- 2015-06-24 CN CN201510354268.XA patent/CN106330316A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6263139B1 (en) * | 1998-11-09 | 2001-07-17 | Nippon Telegraph And Telephone Corporation | Optical transmission system with group velocity dispersion compensation |
| CN1749838A (en) * | 2004-09-15 | 2006-03-22 | 华为技术有限公司 | Light transmission system and light amplifying method used therein |
| CN103166708A (en) * | 2013-03-14 | 2013-06-19 | 武汉光迅科技股份有限公司 | Method for increasing output optical signal-to-noise ratio of remote pump system |
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Application publication date: 20170111 |