CN107196180A - Cascade long-range optical amplification system - Google Patents
Cascade long-range optical amplification system Download PDFInfo
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- CN107196180A CN107196180A CN201710533741.XA CN201710533741A CN107196180A CN 107196180 A CN107196180 A CN 107196180A CN 201710533741 A CN201710533741 A CN 201710533741A CN 107196180 A CN107196180 A CN 107196180A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/09—Processes or apparatus for excitation, e.g. pumping
- H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/06—Construction or shape of active medium
- H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
- H01S3/067—Fibre lasers
- H01S3/06754—Fibre amplifiers
- H01S3/06758—Tandem amplifiers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/09—Processes or apparatus for excitation, e.g. pumping
- H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
- H01S3/0915—Processes or apparatus for excitation, e.g. pumping using optical pumping by incoherent light
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/09—Processes or apparatus for excitation, e.g. pumping
- H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
- H01S3/094—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
- H01S3/094003—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light the pumped medium being a fibre
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
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Abstract
The present invention provides a kind of long-range optical amplification system of cascade, including light emitting devices, 2 forward direction remote gain modules, front end recombination pump source, 2 backward remote gain modules, rear end recombination pump source, optical pickup apparatus；Light emitting devices is used for the input signal light for producing the system；First output end in front end recombination pump source connects the 1st forward direction remote gain module RGU11 the second input by the 1st section of front end bypass fibers；Second output end in front end recombination pump source connects the 2nd forward direction remote gain module RGU12 the second input by the 2nd section of front end bypass fibers；First output end in rear end recombination pump source connects the 1st backward remote gain module RGU1 the second input by the 1st section of rear end bypass fibers；Second output end in rear end recombination pump source connects the 2nd backward remote gain module RGU2 the second input by the 2nd section of rear end bypass fibers；Long transmission distance of the present invention, gain flatness is good.
Description
Technical field
The present invention relates to technical field of photo communication, especially a kind of long-range optical amplification system of cascade.
Background technology
Particular application in undersea transmission or land, due to natural conditions limitation, it is impossible to built in transmission link
Vertical active relaying and monitoring system；Or can not be born by operator using the operation after active relaying and maintenance cost, at this moment
Just have to increase single span unrepeatered transmission distance.The absorption and scattering of optical fiber cause the decay of optical signal, and the dispersion of optical fiber is drawn
Pulse stretching is played, OSNR is reduced, causes the bit error rate to increase, limit the transmission range of communication system.Repeaterless transmission away from
From topmost limited resource：Signal power is limited（Receiving end signal power is too low, it is impossible to meet the sensitivity minimization of receiver
It is required that）, OSNR (OSNR) is limited, dispersion limited and non-linear limited（Such as stimulated Raman scattering SRS, excited Brillouin
Scatter SBS etc.）.
Although the distant pump amplifying technique of tradition can provide certain gain, when pump power will be in optical fiber more than 1W
Middle to produce serious spontaneous Raman lasing, if amplifying with road, spontaneous Raman lasing will be interfered to transmission signal, be led
There is error code in cause system.If bypass amplification, the spontaneous lasing effect of Raman will also result in the waste of pump power, cause to enter
Effective pump power limited of gain module, limits the further raising of transmission range.
The content of the invention
It is an object of the invention to overcome the deficiencies in the prior art there is provided the long-range optical amplification system of one kind cascade,
Optical transmission distance can be obviously improved, the system can be achieved with high-order remotely pumping with very low cost using recombination pump source and put
Greatly, transmission range is further lifted；The recombination pump source overcomes the pumping source of traditional single coherent source composition in a fiber
Stimulated Brillouin scattering caused by power density is too high, the non-linear phenomena such as Raman lasing, so as to get up to remote gain module
Pump power is higher, and more large gain is produced in remote gain module.The technical solution adopted by the present invention is：
The long-range optical amplification system of cascade that a kind of forward pumping mode and backward pumping mode are combined, including light emitting devices, 2
Forward direction remote gain module, front end recombination pump source, 2 backward remote gain modules, rear end recombination pump source, light-receiving dresses
Put；Light emitting devices is used for the input signal light for producing the system；
The output end of light emitting devices connects the of the 1st forward direction remote gain module RGU11 by the 1st section of front end delivery optical fiber
One input, the 1st forward direction remote gain module RGU11 output end connects the 2nd forward direction by the 2nd section of front end delivery optical fiber
Remote gain module RGU12 first input end；2nd forward direction remote gain module RGU12 output end passes through intermediate conveyor
Optical fiber connects the 2nd backward remote gain module RGU2 first input end；2nd backward remote gain module RGU2 output
End connects the 1st backward remote gain module RGU1 first input end by the 2nd section of rear end Transmission Fibers；It is 1st backward remote
Journey gain module RGU1 output end connects the input of optical pickup apparatus by the 1st section of rear end Transmission Fibers；
Front end recombination pump source is identical with the structure in rear end recombination pump source, including the first output end and the second output end；
First output end in front end recombination pump source connects the 1st forward direction remote gain module by the 1st section of front end bypass fibers
RGU11 the second input；Second output end in front end recombination pump source is connected before the 2nd by the 2nd section of front end bypass fibers
To remote gain module RGU12 the second input；
First output end in rear end recombination pump source connects the 1st backward remote gain module by the 1st section of rear end bypass fibers
RGU1 the second input；Second output end in rear end recombination pump source connects the 2nd backward by the 2nd section of rear end bypass fibers
Remote gain module RGU2 the second input；
First output end in front end recombination pump source and rear end recombination pump source is used at least export is produced by 1 rank incoherent pump source
1 raw rank pump light；
Second output end in front end recombination pump source and rear end recombination pump source is used to export what is produced by 1 rank incoherent pump source
1 rank pump light, and the 2 rank pump lights produced by the relevant pumping source of 2 ranks；
1 rank incoherent pump source and the relevant pumping source of 2 ranks have following characteristics：Input signal optical spectrum is located at the relevant pumping of 2 ranks
At 2 rank Raman frequency shifts of source frequency spectrum, input signal optical spectrum is located at 1 rank Raman frequency shift of 1 rank incoherent pump source frequency spectrum, and
1 rank incoherent pump source frequency spectrum is located at 2 ranks and is concerned with 1 rank Raman frequency shift of pumping source.
Further, 1 rank incoherent pump source, 2 rank phases are included in front end recombination pump source and rear end recombination pump source
Dry pumping source, broadband wave multiplexer, power splitter；Wherein 1 rank incoherent pump source is one, and the relevant pumping source of 2 ranks is one
It is individual or several；
2 rank pump lights of the relevant pumping source output of one 2 rank, or the output of the relevant pumping source of several 2 ranks are preposition by one
One input of 2 rank pump light access band wave multiplexers after wave multiplexer multiplex；The output in 1 rank incoherent pump source connects power
The input of beam splitter；Another input of one output termination broadband wave multiplexer of power splitter；Power splitter
Another output end as recombination pump source the first output end；The common port of broadband wave multiplexer is used as the second of recombination pump source
Output end；
Or, 2 rank are concerned with 2 rank pump lights of pumping source output, or the be concerned with output of pumping source of several 2 ranks passes through before one
Put an input of 2 rank pump light access band wave multiplexers after wave multiplexer multiplex；The output in 1 rank incoherent pump source connects width
Another input with wave multiplexer, the input of the public termination power splitter of broadband wave multiplexer, the two of power splitter
First output end and second output end of the individual output end respectively as recombination pump source；
1 rank incoherent pump source uses non-coherent broad band light source；The relevant pumping source of 2 ranks is using Raman fiber lasers or partly leads
Body laser light source.
Further,
The centre wavelength in 1 rank incoherent pump source is between 1420nm~1480nm, and its three dB bandwidth is between 10~100nm；
The centre wavelength of the relevant pumping source of 2 ranks is between 1320nm~1380nm, and its three dB bandwidth is between 0.1~5nm；
The power of the relevant pumping source of 2 ranks is higher than 1 rank incoherent pump source.
Further, the length of the 1st section of front end bypass fibers is equal to by the 1st section of front end delivery fiber lengths, the 2nd section of front end
The length of road optical fiber is equal to the 1st, 2 sections of front end delivery fiber lengths sums；
The length of 1st section of rear end bypass fibers is equal to the 1st section of rear end Transmission Fibers length, the length of the 2nd section of rear end bypass fibers
Equal to the 1st, 2 sections of rear end Transmission Fibers length sums.
The present invention also provides the long-range optical amplification system of cascade of forward pumping mode a kind of, including light emitting devices, before 2
To remote gain module, front end recombination pump source, optical pickup apparatus；Light emitting devices is used for the input signal for producing the system
Light；
The output end of light emitting devices connects the of the 1st forward direction remote gain module RGU11 by the 1st section of front end delivery optical fiber
One input, the 1st forward direction remote gain module RGU11 output end connects the 2nd forward direction by the 2nd section of front end delivery optical fiber
Remote gain module RGU12 first input end；2nd forward direction remote gain module RGU12 output end passes through intermediate conveyor
Optical fiber connects optical pickup apparatus；
Front end recombination pump source includes the first output end and the second output end；
First output end in front end recombination pump source connects the 1st forward direction remote gain module by the 1st section of front end bypass fibers
RGU11 the second input；Second output end in front end recombination pump source is connected before the 2nd by the 2nd section of front end bypass fibers
To remote gain module RGU12 the second input；
First output end in front end recombination pump source is used at least export the 1 rank pump light produced by 1 rank incoherent pump source；
Second output end in front end recombination pump source is used to export the 1 rank pump light produced by 1 rank incoherent pump source, Yi Jiyou
The 2 rank pump lights that the relevant pumping source of 2 ranks is produced；
1 rank incoherent pump source and the relevant pumping source of 2 ranks have following characteristics：Input signal optical spectrum is located at the relevant pumping of 2 ranks
At 2 rank Raman frequency shifts of source frequency spectrum, input signal optical spectrum is located at 1 rank Raman frequency shift of 1 rank incoherent pump source frequency spectrum, and
1 rank incoherent pump source frequency spectrum is located at 2 ranks and is concerned with 1 rank Raman frequency shift of pumping source.
Further, front end recombination pump source include 1 rank incoherent pump source, 2 ranks be concerned with pumping source, broadband wave multiplexer,
Power splitter；Wherein 1 rank incoherent pump source is one, and the relevant pumping source of 2 ranks is one or several；
2 rank pump lights of the relevant pumping source output of one 2 rank, or the output of the relevant pumping source of several 2 ranks are preposition by one
One input of 2 rank pump light access band wave multiplexers after wave multiplexer multiplex；The output in 1 rank incoherent pump source connects power
The input of beam splitter；Another input of one output termination broadband wave multiplexer of power splitter；Power splitter
Another output end as front end recombination pump source the first output end；The common port of broadband wave multiplexer is used as front end recombination pump
Second output end in source；
Or, 2 rank are concerned with 2 rank pump lights of pumping source output, or the be concerned with output of pumping source of several 2 ranks passes through before one
Put an input of 2 rank pump light access band wave multiplexers after wave multiplexer multiplex；The output in 1 rank incoherent pump source connects width
Another input with wave multiplexer, the input of the public termination power splitter of broadband wave multiplexer, the two of power splitter
First output end and second output end of the individual output end respectively as front end recombination pump source；
1 rank incoherent pump source uses non-coherent broad band light source；The relevant pumping source of 2 ranks is using Raman fiber lasers or partly leads
Body laser light source.
Further,
The centre wavelength in 1 rank incoherent pump source is between 1420nm~1480nm, and its three dB bandwidth is between 10~100nm；
The centre wavelength of the relevant pumping source of 2 ranks is between 1320nm~1380nm, and its three dB bandwidth is between 0.1~5nm；
The power of the relevant pumping source of 2 ranks is higher than 1 rank incoherent pump source.
The present invention also provides the long-range optical amplification system of cascade of backward pumping mode a kind of, including light emitting devices, after 2
To remote gain module, rear end recombination pump source, optical pickup apparatus；Light emitting devices is used for the input signal for producing the system
Light；
The output end of light emitting devices connects the 2nd backward remote gain module RGU2 the first input by intermediate conveyor optical fiber
End；2nd backward remote gain module RGU2 output end connects the 1st backward long-range increasing by the 2nd section of rear end Transmission Fibers
Beneficial module RGU1 first input end；1st backward remote gain module RGU1 output end passes through the 1st section of rear end Transmission Fibers
Connect optical pickup apparatus；
Rear end recombination pump source includes the first output end and the second output end；
First output end in rear end recombination pump source connects the 1st backward remote gain module by the 1st section of rear end bypass fibers
RGU1 the second input；Second output end in rear end recombination pump source connects the 2nd backward by the 2nd section of rear end bypass fibers
Remote gain module RGU2 the second input；
First output end in rear end recombination pump source is used at least export the 1 rank pump light produced by 1 rank incoherent pump source；
Second output end in rear end recombination pump source is used to export the 1 rank pump light produced by 1 rank incoherent pump source, Yi Jiyou
The 2 rank pump lights that the relevant pumping source of 2 ranks is produced；
1 rank incoherent pump source and the relevant pumping source of 2 ranks have following characteristics：Input signal optical spectrum is located at the relevant pumping of 2 ranks
At 2 rank Raman frequency shifts of source frequency spectrum, input signal optical spectrum is located at 1 rank Raman frequency shift of 1 rank incoherent pump source frequency spectrum, and
1 rank incoherent pump source frequency spectrum is located at 2 ranks and is concerned with 1 rank Raman frequency shift of pumping source.
Further, rear end recombination pump source include 1 rank incoherent pump source, 2 ranks be concerned with pumping source, broadband wave multiplexer,
Power splitter；Wherein 1 rank incoherent pump source is one, and the relevant pumping source of 2 ranks is one or several；
2 rank pump lights of the relevant pumping source output of one 2 rank, or the output of the relevant pumping source of several 2 ranks are preposition by one
One input of 2 rank pump light access band wave multiplexers after wave multiplexer multiplex；The output in 1 rank incoherent pump source connects power
The input of beam splitter；Another input of one output termination broadband wave multiplexer of power splitter；Power splitter
Another output end as rear end recombination pump source the first output end；The common port of broadband wave multiplexer is used as rear end recombination pump
Second output end in source；
Or, 2 rank are concerned with 2 rank pump lights of pumping source output, or the be concerned with output of pumping source of several 2 ranks passes through before one
Put an input of 2 rank pump light access band wave multiplexers after wave multiplexer multiplex；The output in 1 rank incoherent pump source connects width
Another input with wave multiplexer, the input of the public termination power splitter of broadband wave multiplexer, the two of power splitter
First output end and second output end of the individual output end respectively as rear end recombination pump source；
1 rank incoherent pump source uses non-coherent broad band light source；The relevant pumping source of 2 ranks is using Raman fiber lasers or partly leads
Body laser light source.
Further,
The centre wavelength in 1 rank incoherent pump source is between 1420nm~1480nm, and its three dB bandwidth is between 10~100nm；
The centre wavelength of the relevant pumping source of 2 ranks is between 1320nm~1380nm, and its three dB bandwidth is between 0.1~5nm；
The power of the relevant pumping source of 2 ranks is higher than 1 rank incoherent pump source.
The advantage of the invention is that：
1）Remotely pumping source（Front end recombination pump source and rear end recombination pump source）Coherent source and incoherent light source combination are selected,
The characteristics of taking full advantage of the high-power feature of coherent source and incoherent light source broadband spectral, obtains the enhanced broadband 1 of power
Rank pumping source, this 1 rank pumping source obtains high-gain as the pump-coupling source of Er-doped fiber in erbium is fine；
2）The frequency selection of two kinds of light sources in remotely pumping source has innovation：The frequency of two kinds of light sources is constituted together with input signal
Light frequency constitutes 3 grades of cascade Raman frequency shifts：Coherent source is 2 grades, and incoherent light source is 1 grade；Flashlight is 0 grade；Two kinds of light sources
The pump light sent by wavelength wave multiplexer synthesize after enter bypass fibers, in bypass fibers 2 ranks be concerned with pump light by power turn
Move to 1 rank incoherent pump light, 1 rank incoherent pump light is exaggerated, and effectively overcomes fibre loss, can be for transmission to farther ground
Side；This mode, effectively extends transmission range.
3）Recombination pump source replaces the different semiconductor laser of traditional multiple wavelength, cost by using 2 light sources
Advantage is clearly.
4）Overcome pumping source that traditional single coherent source constitutes in a fiber due to power density it is too high caused by by
Swash Brillouin scattering, the non-linear phenomena such as the spontaneous lasing of Raman, so as to get the pumping work(of Er-doped fiber up in remote gain module
Rate is higher, and then produces in remote gain module more large gain, and bigger gain also implies that farther transmission range.
Brief description of the drawings
Fig. 1 is Raman pump frequency displacement schematic diagram.
Fig. 2 illustrates for the long-range optical amplification system of cascade that the forward pumping mode and backward pumping mode of the present invention are combined
Figure.
Fig. 3 is the schematic diagram of the Raman pump frequency displacement of the present invention.
Fig. 4 is remote gain module diagram of the invention.
Fig. 5 is a kind of structure chart in the recombination pump source of the present invention.
Fig. 6 is another structure chart in the recombination pump source of the present invention.
Fig. 7 is the long-range optical amplification system schematic diagram of cascade of the forward pumping mode of the present invention.
Fig. 8 is the long-range optical amplification system schematic diagram of cascade of the backward pumping mode of the present invention.
Embodiment
With reference to specific drawings and examples, the invention will be further described.
The principle of Higher-order Raman pumping frequency displacement is to be transferred to the pump light of high power short wavelength by gain fibre power
The pump light of long wavelength, then again with the pump light of long wavelength come pump signal light；As shown in figure 1, the letter of 15xx nanometers of wavelength
Number optical spectrum is located at the 2 rank Raman frequency shifts of 13xx nanometer pumping optical spectrums of wavelength, the signal optical spectrum of 15xx nanometers of wavelength
At the 1 rank Raman frequency shift of 14xx nanometers of pumping optical spectrums of wavelength；The transfer process of pumping is from 13xx->14xx->15xx receives
Rice；P21, P22 are 2 rank pump lights, and P11, P12, P13, P14 are 1 rank pump light, and 15xx nanometers of light is flashlight；
Above-mentioned 1 rank pump light and 2 rank pump lights are produced by coherent source, coherent source can using Raman fiber lasers or
Semiconductor laser, good with monochromaticjty, phase is consistent, the features such as power output is high；But because coherent source bandwidth compared with
Narrow, such as its three dB bandwidth is generally between 0.1~3nm；In order to obtain flat gain characteristic, for example, to obtain 1dB flat increasing
Benefit is generally required using 4~6 semiconductor lasers, if it is desired to obtain 0.5dB gain flatness, generally require using 8~
The semiconductor laser of 10 different wave lengths combines to form recombination pump source；
The present invention utilizes above-mentioned principle, and some improvement have been carried out to recombination pump source, devises a kind of long-range light amplification of cascade
System, is below the specific implementation of the long-range optical amplification system of the cascade：
（One）The long-range optical amplification system of cascade that forward pumping mode and backward pumping mode are combined；As shown in Figure 2；
The system includes light emitting devices, 2 forward direction remote gain modules, front end recombination pump source, 2 backward remote gain moulds
Block, rear end recombination pump source, optical pickup apparatus；Light emitting devices can produce the input signal light of the system；
The output end of light emitting devices connects the of the 1st forward direction remote gain module RGU11 by the 1st section of front end delivery optical fiber
One input, the 1st forward direction remote gain module RGU11 output end connects the 2nd forward direction by the 2nd section of front end delivery optical fiber
Remote gain module RGU12 first input end；2nd forward direction remote gain module RGU12 output end passes through intermediate conveyor
Optical fiber connects the 2nd backward remote gain module RGU2 first input end；2nd backward remote gain module RGU2 output
End connects the 1st backward remote gain module RGU1 first input end by the 2nd section of rear end Transmission Fibers；It is 1st backward remote
Journey gain module RGU1 output end connects the input of optical pickup apparatus by the 1st section of rear end Transmission Fibers；
Front end recombination pump source is identical with the structure in rear end recombination pump source, including the first output end and the second output end；
First output end in front end recombination pump source connects the 1st forward direction remote gain module by the 1st section of front end bypass fibers
RGU11 the second input；Second output end in front end recombination pump source is connected before the 2nd by the 2nd section of front end bypass fibers
To remote gain module RGU12 the second input；
First output end in rear end recombination pump source connects the 1st backward remote gain module by the 1st section of rear end bypass fibers
RGU1 the second input；Second output end in rear end recombination pump source connects the 2nd backward by the 2nd section of rear end bypass fibers
Remote gain module RGU2 the second input；
First output end in front end recombination pump source and rear end recombination pump source is used at least export is produced by 1 rank incoherent pump source
1 raw rank pump light；It can also contain in first output end in front end recombination pump source and rear end recombination pump source and be concerned with by 2 ranks
The 2 rank pump lights that pumping source is produced；
Second output end in front end recombination pump source and rear end recombination pump source is used to export what is produced by 1 rank incoherent pump source
1 rank pump light, and the 2 rank pump lights produced by the relevant pumping source of 2 ranks；
On the choice of frequencies, 1 rank incoherent pump source and the relevant pumping source of 2 ranks have following characteristics：Input signal optical spectrum position
At 2 rank Raman frequency shifts of the relevant pumping source frequency spectrum of 2 ranks, input signal optical spectrum is located at 1 rank of 1 rank incoherent pump source frequency spectrum
At Raman frequency shift, and 1 rank incoherent pump source frequency spectrum is located at 2 ranks and is concerned with 1 rank Raman frequency shift of pumping source, as shown in Figure 3；
Light emitting devices and front end recombination pump source are generally arranged at same place, such as in same transmitter room, thus
The length of 1st section of front end bypass fibers is equal to the 1st section of front end delivery fiber lengths, as shown in the length L11 in Fig. 2；Before 2nd section
The length of bypass fibers is held to be equal to the 1st, 2 sections of front end delivery fiber lengths sums, as shown in the length L11+L12 in Fig. 2；When
So, recombination pump pump in front end is provided separately also possible with light emitting devices.
Optical pickup apparatus and rear end recombination pump source are generally arranged at same place, such as in same receiving house,
Thus the length of the 1st section of rear end bypass fibers is equal to the 1st section of rear end Transmission Fibers length, as shown in the length L1 in Fig. 2；2nd
The length of Duan Houduan bypass fibers is equal to the 1st, 2 sections of rear end Transmission Fibers length sums, as shown in the length L1+L2 in Fig. 2；When
So, recombination pump source in rear end is provided separately also possible with optical pickup apparatus.
The length of intermediate conveyor optical fiber is L3；Above-mentioned L1, L11 length are 70~100km, L2, L12 length for 40~
80km；
Forward direction remote gain module and backward remote gain module can use identical structure, including built-in wave multiplexer, gain
Optical fiber, isolator；The first input end of built-in wave multiplexer as it is preceding to remote gain module or backward remote gain module
One input, the second input of built-in wave multiplexer is as preceding to the second defeated of remote gain module or backward remote gain module
Enter end；The common port of built-in wave multiplexer connects one end of gain fibre；The other end of gain fibre connects one end of isolator, every
From device the other end as preceding to remote gain module or the output end of backward remote gain module；
The structure in front end recombination pump source and rear end recombination pump source as shown in Figure 5, Figure 6, including 1 rank incoherent pump source, 2 ranks
Relevant pumping source, broadband wave multiplexer, power splitter；Wherein 1 rank incoherent pump source is typically one, and the relevant pumping of 2 ranks
Source can be one or several；
The inside in recombination pump source can have two kinds of connected modes；Respectively as shown in Figure 5, Figure 6；
2 rank pump lights of the relevant pumping source output of one 2 rank, or the output of the relevant pumping source of several 2 ranks are preposition by one
One input of 2 rank pump light access band wave multiplexers after wave multiplexer multiplex；The output in 1 rank incoherent pump source connects power
The input of beam splitter；Another input of one output termination broadband wave multiplexer of power splitter；Power splitter
Another output end as recombination pump source the first output end；The common port of broadband wave multiplexer is used as the second of recombination pump source
Output end；When only one 2 ranks are concerned with pumping source, it is not necessary to preposition wave multiplexer；Such a connected mode, the of recombination pump source
Only has 1 rank pump light in one output end；
Or, 2 rank are concerned with 2 rank pump lights of pumping source output, or the be concerned with output of pumping source of several 2 ranks passes through before one
Put an input of 2 rank pump light access band wave multiplexers after wave multiplexer multiplex；The output in 1 rank incoherent pump source connects width
Another input with wave multiplexer, the input of the public termination power splitter of broadband wave multiplexer, the two of power splitter
First output end and second output end of the individual output end respectively as recombination pump source；When only one 2 ranks are concerned with pumping source,
Preposition wave multiplexer is not needed；Contain 1 rank pump in such a connected mode, first output end in recombination pump source, the second output end
Pu light and 2 rank pump lights；
1 rank incoherent pump source uses non-coherent broad band light source, centre wavelength in 1420~1480nm, its three dB bandwidth 10~
Between 100nm；1 rank incoherent pump source can use spontaneous radiation light source or LED/light source, non-laser type；
2 ranks are concerned with pumping source using Raman fiber lasers or semiconductor laser light source；The power of the relevant pumping source of 2 ranks is high
In 1 rank incoherent pump source, typically larger than 1W, and the pump power in 1 rank incoherent pump source is generally within 1W；2 ranks are concerned with
The centre wavelength of pumping source is between 1320nm~1380nm, and its three dB bandwidth is between 0.1~5nm；
In the example shown in Fig. 3, the relevant pumping source of 22 ranks in wave-length coverage 1320nm~1380nm is employed；P21、
P22 is 2 rank pump lights；
For this part of the forward pumping of the long-range optical amplification system of the cascade（Remotely increase comprising front end recombination pump source, forward direction
Beneficial module RGU11, RGU12）If only containing 1 rank pump light in first output end in front end recombination pump source, 1 rank pump light passes through
Length reaches RGU11 for L11 the 1st section of front end bypass fibers, and the flashlight that light emitting devices is sent by Transmission Fibers enters
Er-doped fiber before entering into remote gain module, runs into the remaining 1 rank pump light that the transmission of front end recombination pump source comes, the two
Coupling amplification in Er-doped fiber, the optical signal after amplification can continue on follow-up Transmission Fibers transmission；
For in the output end in front end recombination pump source containing 1 rank pump light and during 2 rank pump light, before pump light arrival
To before remote gain module, in the bypass fibers of front end, the power of 2 rank pump lights is transferred to 1 rank pumping by Raman frequency shift
Light, increases the signal power of 1 rank pump light, further pushes to receive apart from farther by 1 rank pump light（Apart from L11+
L12）RGU12；So flashlight is enabled to be increased so RGU12 can be placed on to appoint apart from the farther place of light emitting devices
Benefit；
This combination in recombination pump source reduces the power requirement to 1 rank incoherent pump source, because 2 in bypass fibers
The power of the relevant pumping source of rank is transferred to 1 rank incoherent pump source by Raman frequency shift, and this transfer is progressively to enter in the transmission
Capable, so being not in 1 big rank pump power everywhere in optical fiber.
By selecting the rank incoherent light source of broadband 1 of high-power 2 rank coherent source and lower-wattage, and the two frequency
The cascade Raman frequency shift of composition, in bypass fibers, the pump light in the pump-coupling source of flashlight is amplified in transmission.It is this
Pump light source overcome raman pump source that traditional single coherent source constitutes in a fiber power density it is too high caused by be excited
Brillouin scattering, the non-linear phenomena such as Raman lasing can inject higher 1 rank and 2 rank power, reach remote gain module
RGU pump power is improved, and bigger gain is produced in RGU；The higher pump power of injection and without lasing, it is meant that
Pump power can be pushed to farther place, the distance of remote gain module and its remotely pumping source is further widened（Should be away from
From being equal to a distance from remote gain module and light emitting devices or optical pickup apparatus）, further lift transmission range.
Another advantage in improved recombination pump source is also evident from, with 2 rank coherent sources and 1 rank incoherent light source
The combination raman pump source being bonded takes full advantage of that coherent source monochromaticjty is good, consistent and high-power output the spy of phase
Point, while the characteristics of make use of incoherent light source wide bandwidth, only can just realize broadband flat-high-gain spectrum with two light sources.
1 higher rank flat gain spectrum of power is obtained with by using the few light source of quantity, cost is saved.
Light emitting devices is as shown in Fig. 2 including transmitting terminal TX, dispersion pre-compensation module（Close to TX DCM in Fig. 2）, work(
Rate amplifier；Optical pickup apparatus includes preamplifier, dispersion post-compensation module（Close to RX DCM in Fig. 2）, receiving terminal RX；
This two parts is not the emphasis of the present invention, and technology maturation is repeated no more.
（Two）The long-range optical amplification system of cascade of forward pumping mode；
On the basis of Fig. 2, remove rear end recombination pump source, two backward remote gain modules RGU1, RGU2, and accordingly
Rear end bypass fibers and rear end Transmission Fibers, are formed the long-range light amplification system of cascade of forward pumping mode as shown in Figure 7
System；Operation principle is similar with Fig. 2；
（Three）The long-range optical amplification system of cascade of backward pumping mode；
On the basis of Fig. 2, remove front end recombination pump source, two forward direction remote gain modules RGU11, RGU12, and accordingly
Front end bypass fibers and front end delivery optical fiber, be formed the long-range light amplification of cascade of backward pump mode as shown in Figure 8
System；Operation principle is similar with Fig. 2.
It is understood that the principle that embodiment of above is intended to be merely illustrative of the present and the exemplary implementation that uses
Mode, but the invention is not limited in this.For those skilled in the art, the essence of the present invention is not being departed from
In the case of refreshing and essence, various changes and modifications can be made therein, and these variations and modifications are also considered as protection scope of the present invention.
Claims (10)
1. the long-range optical amplification system of one kind cascade, it is characterised in that including light emitting devices, 2 forward direction remote gain modules, preceding
Hold recombination pump source, 2 backward remote gain modules, rear end recombination pump source, optical pickup apparatus；Light emitting devices is used to produce
The input signal light of the system；
The output end of light emitting devices connects the of the 1st forward direction remote gain module RGU11 by the 1st section of front end delivery optical fiber
One input, the 1st forward direction remote gain module RGU11 output end connects the 2nd forward direction by the 2nd section of front end delivery optical fiber
Remote gain module RGU12 first input end；2nd forward direction remote gain module RGU12 output end passes through intermediate conveyor
Optical fiber connects the 2nd backward remote gain module RGU2 first input end；2nd backward remote gain module RGU2 output
End connects the 1st backward remote gain module RGU1 first input end by the 2nd section of rear end Transmission Fibers；It is 1st backward remote
Journey gain module RGU1 output end connects the input of optical pickup apparatus by the 1st section of rear end Transmission Fibers；
Front end recombination pump source is identical with the structure in rear end recombination pump source, including the first output end and the second output end；
First output end in front end recombination pump source connects the 1st forward direction remote gain module by the 1st section of front end bypass fibers
RGU11 the second input；Second output end in front end recombination pump source is connected before the 2nd by the 2nd section of front end bypass fibers
To remote gain module RGU12 the second input；
First output end in rear end recombination pump source connects the 1st backward remote gain module by the 1st section of rear end bypass fibers
RGU1 the second input；Second output end in rear end recombination pump source connects the 2nd backward by the 2nd section of rear end bypass fibers
Remote gain module RGU2 the second input；
First output end in front end recombination pump source and rear end recombination pump source is used at least export is produced by 1 rank incoherent pump source
1 raw rank pump light；
Second output end in front end recombination pump source and rear end recombination pump source is used to export what is produced by 1 rank incoherent pump source
1 rank pump light, and the 2 rank pump lights produced by the relevant pumping source of 2 ranks；
1 rank incoherent pump source and the relevant pumping source of 2 ranks have following characteristics：Input signal optical spectrum is located at the relevant pumping of 2 ranks
At 2 rank Raman frequency shifts of source frequency spectrum, input signal optical spectrum is located at 1 rank Raman frequency shift of 1 rank incoherent pump source frequency spectrum, and
1 rank incoherent pump source frequency spectrum is located at 2 ranks and is concerned with 1 rank Raman frequency shift of pumping source.
2. long-range optical amplification system is cascaded as claimed in claim 1, it is characterised in that
Include 1 rank incoherent pump source, one or a several 2 rank phases in front end recombination pump source and rear end recombination pump source
Dry pumping source, broadband wave multiplexer, power splitter；
2 rank pump lights of the relevant pumping source output of one 2 rank, or the output of the relevant pumping source of several 2 ranks are preposition by one
One input of 2 rank pump light access band wave multiplexers after wave multiplexer multiplex；The output in 1 rank incoherent pump source connects power
The input of beam splitter；Another input of one output termination broadband wave multiplexer of power splitter；Power splitter
Another output end as recombination pump source the first output end；The common port of broadband wave multiplexer is used as the second of recombination pump source
Output end；
Or, 2 rank are concerned with 2 rank pump lights of pumping source output, or the be concerned with output of pumping source of several 2 ranks passes through before one
Put an input of 2 rank pump light access band wave multiplexers after wave multiplexer multiplex；The output in 1 rank incoherent pump source connects width
Another input with wave multiplexer, the input of the public termination power splitter of broadband wave multiplexer, the two of power splitter
First output end and second output end of the individual output end respectively as recombination pump source；
1 rank incoherent pump source uses non-coherent broad band light source；The relevant pumping source of 2 ranks is using Raman fiber lasers or partly leads
Body laser light source.
3. long-range optical amplification system is cascaded as claimed in claim 2, it is characterised in that
The centre wavelength in 1 rank incoherent pump source is between 1420nm~1480nm, and its three dB bandwidth is between 10~100nm；
The centre wavelength of the relevant pumping source of 2 ranks is between 1320nm~1380nm, and its three dB bandwidth is between 0.1~5nm；
The power of the relevant pumping source of 2 ranks is higher than 1 rank incoherent pump source.
4. long-range optical amplification system is cascaded as claimed in claim 1, it is characterised in that
The length of 1st section of front end bypass fibers is equal to the 1st section of front end delivery fiber lengths, the length of the 2nd section of front end bypass fibers
Equal to the 1st, 2 sections of front end delivery fiber lengths sums；
The length of 1st section of rear end bypass fibers is equal to the 1st section of rear end Transmission Fibers length, the length of the 2nd section of rear end bypass fibers
Equal to the 1st, 2 sections of rear end Transmission Fibers length sums.
5. the long-range optical amplification system of one kind cascade, it is characterised in that including light emitting devices, 2 forward direction remote gain modules, preceding
Hold recombination pump source, optical pickup apparatus；Light emitting devices is used for the input signal light for producing the system；
The output end of light emitting devices connects the of the 1st forward direction remote gain module RGU11 by the 1st section of front end delivery optical fiber
One input, the 1st forward direction remote gain module RGU11 output end connects the 2nd forward direction by the 2nd section of front end delivery optical fiber
Remote gain module RGU12 first input end；2nd forward direction remote gain module RGU12 output end passes through intermediate conveyor
Optical fiber connects optical pickup apparatus；
Front end recombination pump source includes the first output end and the second output end；
First output end in front end recombination pump source connects the 1st forward direction remote gain module by the 1st section of front end bypass fibers
RGU11 the second input；Second output end in front end recombination pump source is connected before the 2nd by the 2nd section of front end bypass fibers
To remote gain module RGU12 the second input；
First output end in front end recombination pump source is used at least export the 1 rank pump light produced by 1 rank incoherent pump source；
Second output end in front end recombination pump source is used to export the 1 rank pump light produced by 1 rank incoherent pump source, Yi Jiyou
The 2 rank pump lights that the relevant pumping source of 2 ranks is produced；
1 rank incoherent pump source and the relevant pumping source of 2 ranks have following characteristics：Input signal optical spectrum is located at the relevant pumping of 2 ranks
At 2 rank Raman frequency shifts of source frequency spectrum, input signal optical spectrum is located at 1 rank Raman frequency shift of 1 rank incoherent pump source frequency spectrum, and
1 rank incoherent pump source frequency spectrum is located at 2 ranks and is concerned with 1 rank Raman frequency shift of pumping source.
6. long-range optical amplification system is cascaded as claimed in claim 5, it is characterised in that
Front end recombination pump source include 1 rank incoherent pump source, one or several 2 ranks be concerned with pumping source, broadband wave multiplexer,
Power splitter；
2 rank pump lights of the relevant pumping source output of one 2 rank, or the output of the relevant pumping source of several 2 ranks are preposition by one
One input of 2 rank pump light access band wave multiplexers after wave multiplexer multiplex；The output in 1 rank incoherent pump source connects power
The input of beam splitter；Another input of one output termination broadband wave multiplexer of power splitter；Power splitter
Another output end as front end recombination pump source the first output end；The common port of broadband wave multiplexer is used as front end recombination pump
Second output end in source；
Or, 2 rank are concerned with 2 rank pump lights of pumping source output, or the be concerned with output of pumping source of several 2 ranks passes through before one
Put an input of 2 rank pump light access band wave multiplexers after wave multiplexer multiplex；The output in 1 rank incoherent pump source connects width
Another input with wave multiplexer, the input of the public termination power splitter of broadband wave multiplexer, the two of power splitter
First output end and second output end of the individual output end respectively as front end recombination pump source；
1 rank incoherent pump source uses non-coherent broad band light source；The relevant pumping source of 2 ranks is using Raman fiber lasers or partly leads
Body laser light source.
7. long-range optical amplification system is cascaded as claimed in claim 5, it is characterised in that
The centre wavelength in 1 rank incoherent pump source is between 1420nm~1480nm, and its three dB bandwidth is between 10~100nm；
The centre wavelength of the relevant pumping source of 2 ranks is between 1320nm~1380nm, and its three dB bandwidth is between 0.1~5nm；
The power of the relevant pumping source of 2 ranks is higher than 1 rank incoherent pump source.
8. the long-range optical amplification system of one kind cascade, it is characterised in that including light emitting devices, 2 backward remote gain modules, after
Hold recombination pump source, optical pickup apparatus；Light emitting devices is used for the input signal light for producing the system；
The output end of light emitting devices connects the 2nd backward remote gain module RGU2 the first input by intermediate conveyor optical fiber
End；2nd backward remote gain module RGU2 output end connects the 1st backward long-range increasing by the 2nd section of rear end Transmission Fibers
Beneficial module RGU1 first input end；1st backward remote gain module RGU1 output end passes through the 1st section of rear end Transmission Fibers
Connect optical pickup apparatus；
Rear end recombination pump source includes the first output end and the second output end；
First output end in rear end recombination pump source connects the 1st backward remote gain module by the 1st section of rear end bypass fibers
RGU1 the second input；Second output end in rear end recombination pump source connects the 2nd backward by the 2nd section of rear end bypass fibers
Remote gain module RGU2 the second input；
First output end in rear end recombination pump source is used at least export the 1 rank pump light produced by 1 rank incoherent pump source；
Second output end in rear end recombination pump source is used to export the 1 rank pump light produced by 1 rank incoherent pump source, Yi Jiyou
The 2 rank pump lights that the relevant pumping source of 2 ranks is produced；
1 rank incoherent pump source and the relevant pumping source of 2 ranks have following characteristics：Input signal optical spectrum is located at the relevant pumping of 2 ranks
At 2 rank Raman frequency shifts of source frequency spectrum, input signal optical spectrum is located at 1 rank Raman frequency shift of 1 rank incoherent pump source frequency spectrum, and
1 rank incoherent pump source frequency spectrum is located at 2 ranks and is concerned with 1 rank Raman frequency shift of pumping source.
9. long-range optical amplification system is cascaded as claimed in claim 8, it is characterised in that
Rear end recombination pump source include 1 rank incoherent pump source, one or several 2 ranks be concerned with pumping source, broadband wave multiplexer,
Power splitter；
2 rank pump lights of the relevant pumping source output of one 2 rank, or the output of the relevant pumping source of several 2 ranks are preposition by one
One input of 2 rank pump light access band wave multiplexers after wave multiplexer multiplex；The output in 1 rank incoherent pump source connects power
The input of beam splitter；Another input of one output termination broadband wave multiplexer of power splitter；Power splitter
Another output end as rear end recombination pump source the first output end；The common port of broadband wave multiplexer is used as rear end recombination pump
Second output end in source；
Or, 2 rank are concerned with 2 rank pump lights of pumping source output, or the be concerned with output of pumping source of several 2 ranks passes through before one
Put an input of 2 rank pump light access band wave multiplexers after wave multiplexer multiplex；The output in 1 rank incoherent pump source connects width
Another input with wave multiplexer, the input of the public termination power splitter of broadband wave multiplexer, the two of power splitter
First output end and second output end of the individual output end respectively as rear end recombination pump source；
1 rank incoherent pump source uses non-coherent broad band light source；The relevant pumping source of 2 ranks is using Raman fiber lasers or partly leads
Body laser light source.
10. such as the long-range optical amplification system of cascade according to any one of claims 1 to 9, it is characterised in that
Include built-in wave multiplexer, gain fibre, isolator in forward direction remote gain module and backward remote gain module；It is built-in
The first input end of wave multiplexer is used as the preceding first input end to remote gain module or backward remote gain module, built-in multiplex
Second input of device is used as preceding the second input to remote gain module or backward remote gain module；Built-in wave multiplexer
Common port connects one end of gain fibre；The other end of gain fibre connects one end of isolator, the other end conduct of isolator
The output end of forward direction remote gain module or backward remote gain module.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110600982A (en) * | 2019-08-14 | 2019-12-20 | 武汉光迅科技股份有限公司 | Remote pumping system capable of improving pumping fiber-entering power |
| CN112490830A (en) * | 2020-11-16 | 2021-03-12 | 武汉光迅电子技术有限公司 | Remote pumping system for increasing distance between pumping unit and gain unit |
| CN113675710A (en) * | 2021-08-17 | 2021-11-19 | 中国电子科技集团公司第十四研究所 | Distributed optical fiber amplifier and array thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6101024A (en) * | 1998-03-24 | 2000-08-08 | Xtera Communications, Inc. | Nonlinear fiber amplifiers used for a 1430-1530nm low-loss window in optical fibers |
| CN1741325A (en) * | 2004-08-26 | 2006-03-01 | 富士通株式会社 | Optical amplification device, raman amplifier, optical WDM transmission system and method |
| CN105049123A (en) * | 2015-07-01 | 2015-11-11 | 武汉光迅科技股份有限公司 | Bidirectional remote pump transmission system sharing remote gain units |
| CN204928834U (en) * | 2015-06-24 | 2015-12-30 | 国家电网公司 | Light amplification equipment of overlength apart from transmission system in |
| CN207009889U (en) * | 2017-07-03 | 2018-02-13 | 无锡市德科立光电子技术有限公司 | Cascade long-range optical amplification system |
| US20180123311A1 (en) * | 2015-05-13 | 2018-05-03 | Furukawa Electric Co., Ltd. | Light source for raman amplification, light source system for raman amplification, raman amplifier, and raman amplifying system |
-
2017
- 2017-07-03 CN CN201710533741.XA patent/CN107196180B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6101024A (en) * | 1998-03-24 | 2000-08-08 | Xtera Communications, Inc. | Nonlinear fiber amplifiers used for a 1430-1530nm low-loss window in optical fibers |
| CN1741325A (en) * | 2004-08-26 | 2006-03-01 | 富士通株式会社 | Optical amplification device, raman amplifier, optical WDM transmission system and method |
| US20180123311A1 (en) * | 2015-05-13 | 2018-05-03 | Furukawa Electric Co., Ltd. | Light source for raman amplification, light source system for raman amplification, raman amplifier, and raman amplifying system |
| CN204928834U (en) * | 2015-06-24 | 2015-12-30 | 国家电网公司 | Light amplification equipment of overlength apart from transmission system in |
| CN105049123A (en) * | 2015-07-01 | 2015-11-11 | 武汉光迅科技股份有限公司 | Bidirectional remote pump transmission system sharing remote gain units |
| CN207009889U (en) * | 2017-07-03 | 2018-02-13 | 无锡市德科立光电子技术有限公司 | Cascade long-range optical amplification system |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110600982A (en) * | 2019-08-14 | 2019-12-20 | 武汉光迅科技股份有限公司 | Remote pumping system capable of improving pumping fiber-entering power |
| WO2021027207A1 (en) * | 2019-08-14 | 2021-02-18 | 武汉光迅科技股份有限公司 | Remote pumping system capable of improving input pumping power |
| CN112490830A (en) * | 2020-11-16 | 2021-03-12 | 武汉光迅电子技术有限公司 | Remote pumping system for increasing distance between pumping unit and gain unit |
| CN113675710A (en) * | 2021-08-17 | 2021-11-19 | 中国电子科技集团公司第十四研究所 | Distributed optical fiber amplifier and array thereof |
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