CN109905234A - A kind of quantum key distribution and optical communication system fine transmission method and device altogether - Google Patents
A kind of quantum key distribution and optical communication system fine transmission method and device altogether Download PDFInfo
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Abstract
This application provides the total fine transmission method of a kind of quantum key distribution and optical communication system and devices.It is detected and when the signal parameter of the optical communication system that sends receiving total fine Transmission system, according to the signal parameter of the optical communication system received, and the mapping relations initialization QKD system and the operating mode and running parameter of fine Transmission system altogether of configuration；In the total fine transmission course of work, the signal parameter of QKD system is monitored, and receives the signal parameter for the optical communication system that fine Transmission system monitors altogether；When the variation of the optical power in the signal parameter for determining optical communication system is greater than the first predetermined power threshold value, and when determining that current system performance is not able to satisfy default capabilities index request according to the signal parameter of the QKD system monitored, according to the mapping relations adjustment QKD system and the running parameter of fine Transmission system altogether of the signal parameter of current optical communication system, and configuration.It is capable of the configuration and adjustment of automatic realizing system operating mode and running parameter.
Description
Technical field
The present invention relates to field of communication technology, in particular to a kind of quantum key distribution and the total fine transmission side of optical communication system
Method and device.
Background technique
Quantum key distribution (quantum key distribution, QKD) passes through the transmission and measurement of quantum state, first
It realizes that the security key that can not be ravesdropping is shared between receiving-transmitting sides, combines realization warp with traditional private communication technology again later
The encrypted transmission of allusion quotation information.
Secret communication based on quantum key distribution is known as quantum secret communication, as taking the lead in entering in quantum communications field
Practical technology, in recent years quantum secret communication technical research, pilot application and in terms of quickly grow.
QKD system signal includes quantum state optical signal, synchronous optical signal and negotiates optical signal, in practical applications if
The three kinds of optical signals and optical communication system signal of QKD system occupy independent optical fiber transmission respectively, then can consume largely now net optical fiber
Resource causes limitation and obstacle to its practical application deployment.
Quantum state optical signal belongs to the other low light signals of single-photon-level, carries out total fibre in the strong optical signal with optical communication system
When mixed transport, due to the spontaneous Raman scattering effect in optical fiber, the Raman scattering noise that strong optical signal introduces may cause QKD
The parameter degradations such as detection efficient, dark counting and the response time of system single-photon detector or even fully saturated failure.So solution
Certainly QKD and the total fine transmission problem of optic communication are for further pushing the practical application of QKD technology to be of great significance.
In QKD and the total fine transmission of optic communication, the work such as the direction of business optical signal, wavelength and power are joined in optical communication system
Number may with the variation of network environment real-time change, it is also possible to it is complete because of the reconstruct of upper-layer service and physical layer optical path
Change.The variation of the strong optical signal of optical communication system will have an impact the QKD system signal of total fine transmission, QKD caused to transmit energy
Power and security key cause to seriously affect at the deterioration of code rate to total fine transmission application.
Summary of the invention
In view of this, the application provides a kind of quantum key distribution and optical communication system fine transmission method and device altogether, energy
Enough automatic configurations and adjustment for realizing quantum key distribution and optical communication system total fine Transmission system operating mode and running parameter.
In order to solve the above technical problems, the technical solution of the application is achieved in that
A kind of quantum key distribution and optical communication system fine transmission method altogether, the signal parameter of the photosystem of configuration, with QKD
System and the altogether fine operating mode of Transmission system and the mapping relations of running parameter；This method comprises:
The signal parameter of optical communication system that total fine Transmission system is detected and sent is received, it is logical according to the light received
The signal parameter of letter system, and the mapping relations initialization QKD system and the operating mode and work of fine Transmission system altogether of configuration
Make parameter；
In the total fine transmission course of work, the signal parameter of QKD system is monitored, and receives what fine Transmission system altogether monitored
The signal parameter of optical communication system；
When the optical power in the signal parameter for determining optical communication system variation be greater than the first predetermined power threshold value, and according to
When the signal parameter of the QKD system monitored determines that current system performance is not able to satisfy default capabilities index request, according to current
The signal parameter of optical communication system, and the mapping relations adjustment QKD system and the running parameter of fine Transmission system altogether of configuration.
Fine transmitting device, the device include: receiving unit, configuration altogether for a kind of quantum key distribution QKD and optical communication system
Unit, monitoring unit and processing unit；
The receiving unit, the signal parameter of optical communication system for detecting and sending for receiving total fine Transmission system；
The configuration unit, the signal parameter of the photosystem for configuration, the work with QKD system and total fine Transmission system
The mapping relations of mode and running parameter；When the receiving unit receives the optic communication that total fine Transmission system is detected and sent
The signal parameter of system initializes QKD system according to the mapping relations of the signal parameter of the optical communication system received, and configuration
System and the altogether operating mode and running parameter of fine Transmission system；
The monitoring unit, for monitoring the signal parameter of QKD system in the total fine transmission course of work；
The processing unit, for when the light in the signal parameter for the optical communication system that the determining receiving unit receives
The variation of power is greater than the first predetermined power threshold value, and the signal parameter of the QKD system monitored according to the monitoring unit is true
When settled preceding system performance is not able to satisfy default capabilities index request, according to the signal parameter of current optical communication system, Yi Jisuo
State the mapping relations adjustment QKD system of configuration of described dispensing unit and the running parameter of total fine Transmission system.
As can be seen from the above technical solution, pass through the signal parameter of detection optical communication system, automatic configuration in the application
QKD system and the altogether operating mode and running parameter of fine Transmission system；In the signal by monitoring optical communication system and QKD system
Parameter comes adjust automatically QKD system and the altogether running parameter of fine Transmission system, being capable of automatic realizing system operating mode and work
The configuration and adjustment of parameter.
Detailed description of the invention
Fig. 1 is quantum key distribution and the total fine transmission flow schematic diagram of optic communication in the embodiment of the present application one；
Fig. 2 is quantum key distribution and the total fine transmission flow schematic diagram of optic communication in the embodiment of the present application two；
Fig. 3 is quantum key distribution and the total fine Transmission system schematic diagram of optic communication in the embodiment of the present application；
Fig. 4 is the system schematic that FPGA carries out parameter adjustment configuration in the embodiment of the present application；
Fig. 5 is the apparatus structure schematic diagram for being applied to above-mentioned technology in the embodiment of the present application.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and examples,
Technical solution of the present invention is described in detail.
A kind of quantum key distribution and optic communication fine transmission method altogether are provided in the embodiment of the present application, applied logical including light
Letter system, the quantum key distribution of QKD system and total fine Transmission system and optic communication are altogether in fine Transmission system.It is logical by detection light
The signal parameter of letter system, automatic configuration QKD system and the altogether operating mode and running parameter of fine Transmission system；Passing through prison
The signal parameter for surveying optical communication system and QKD system comes adjust automatically QKD system and the altogether running parameter of fine Transmission system.
Wherein, optical communication system is that total fine transmission, the system of bearer service optical signal are carried out with QKD system.
QKD system be with optical communication system fine transmission altogether, bearing capacity sub-light signal, synchronous optical signal and negotiate optical signal into
Quantum key transmission and shared is completed in row transmission, and combine existing QKD coding protocol, modulation technique and post-processing algorithm
System.
Coding protocol, modulation technique and post-processing algorithm technology in QKD system are based on prior art realization, this
The total fine transmission method that invention provides can be suitable for different QKD system technical solutions.
Fibre Transmission system is multiple for realizing the adaptive wavelength-division of optical communication system and QKD system in same fiber core altogether
With transmission, the signal parameter of optical communication system is detected, and will test result and be sent to each control equipment, makes to control equipment
To QKD system and altogether, the operating mode and running parameter of fine Transmission system carry out initial configuration according to testing result.
In the embodiment of the present application when the adjustment of realization automatic configuration and running parameter, needs to control equipment and be pre-configured with and reflect
Penetrate relationship, the mapping relations are the signal parameter of optical communication system, with QKD system and altogether the operating mode of fibre Transmission system and
Relationship between running parameter.
The signal parameter of optical communication system includes: the transmission direction of business optical signal, operating wavelength windows and optical power；Light
Service signal may include more modulation format, signal rate and operation wavelength, transmission method fine altogether provided by the present application for
Optical communication system service signal is fully transparent, i.e., the signal parameter of optical communication system is only detected, not to any of optical communication system
Parameter is modified.
The operating mode of QKD system is the transmission direction of QKD system signal；
The running parameter of QKD system includes: transmitter optical source wavelength, and pulse recurrence frequency is inveigled state modulation parameter and connect
Receipts machine detector gating parameter；
The operating mode of fibre Transmission system is channel join-splitting device operating mode relevant to transmission direction altogether；
The running parameter of fibre Transmission system includes: the decaying of optical communication system service signal, channel join-splitting device and wavelength window altogether
Relevant operating mode, optical filter central wavelength and passband parameter
The mapping relations of configuration specifically:
Fine transmission, the transmission direction of the two are corresponding altogether for the transmission direction and QKD system signal of business optical signal；
For example, the transmission direction of business optical signal is A to B, then the transmission direction of corresponding QKD system signal is also configured as
A to B；
The operating wavelength windows and the transmitter optical source wavelength in QKD system running parameter of optical communication system business optical signal
It is corresponding；
For example, when optical communication system business optical signal is transmitted using the C-band of 1550nm wavelength window, QKD system
System correspondence uses the O wave band of 1310nm wavelength window as the light source working wavelength of quantum optical signal, i.e. transmitter optical source wavelength；
1490nm is used to use 1570nm as the light source working wave for negotiating optical signal as the light source working wavelength of synchronous optical signal
It is long；
The optical power and the pulse recurrence frequency in QKD system running parameter of optical communication system business optical signal, inveigle state
Modulation parameter and receiver detector gating parameter are corresponding；
For example, impacting to QKD system at code rate when business optical signal power increases, leading into code rate is reduced, this
When, by increasing pulse recurrence frequency, perhaps reduce the window pulse quantity or reduction receiver detector inveigled in state modulation
Gating pulse width can reduce influence of the business optical signal shot noise for QKD system at code rate, keep QKD system
Stablize at code rate in available horizontal.
Channel join-splitting device and wavelength window of the operating wavelength windows of optical communication system business optical signal with fine Transmission system altogether
Relevant operating mode, optical filter central wavelength and passband parameter are corresponding.
For example, channel join-splitting device and wavelength window when the operation window of business optical signal changes, in total fibre Transmission system
The relevant operating mode of mouth, that is, the input/output port for corresponding to different wave length switches over, while optical filter central wavelength pair
It should adjust.
Optical power attenuation and optical filter passband of the optical power of optical communication system business optical signal with fine Transmission system altogether
It is corresponding；
For example, the optical power attenuation value in fibre Transmission system increases altogether, Huo Zheguang when the optical power of business optical signal increases
Filter passband reduces, to reduce influence of the business optical signal shot noise to QKD system at code rate.
In the mapping relations, is determined for various corresponding relationships according to the interactive relation between each system, need to meet
Following rule:
During QKD system and the altogether operating mode and running parameter of fibre Transmission system are configured and are adjusted, operating mode
It requires to include, the QKD signal work different with optic communication signal holding symport and QKD signal and optic communication signal behavior
Be isolated as wavelength window, running parameter requires to include, according to the operating wavelength windows of optical communication system service signal and
The attenuator that light signal strength carries out total fine Transmission system is adjusted, the adjustment of optical filter central wavelength and passband parameter regulation, with
And the detector of QKD system gates parameter regulation.
With reference to the accompanying drawing, quantum key distribution and the total fine transmission process of optic communication in the embodiment of the present application is described in detail.
Embodiment one
It is quantum key distribution and the total fine transmission flow schematic diagram of optic communication in the embodiment of the present application one referring to Fig. 1, Fig. 1.
Specific steps are as follows:
Step 101, control equipment receives the signal parameter of optical communication system that total fine Transmission system is detected and sent,
According to mapping relations initialization QKD system and the total fine transmission system of the signal parameter of the optical communication system received, and configuration
The operating mode and running parameter of system.
Optical communication system signal ginseng is completed in the operating mode and running parameter of fibre Transmission system and QKD system configuration altogether
After number detection, by control equipment centralized configuration and it is completed at the same time.
Step 102, which monitors the signal parameter of QKD system, and receive altogether in the total fine transmission course of work
The signal parameter for the optical communication system that fine Transmission system monitors.
Step 103, when the variation of the optical power in the signal parameter for determining optical communication system is greater than the first predetermined power threshold
When being worth, and determining that current system performance is not able to satisfy default capabilities index request according to the signal parameter of the QKD system monitored,
According to the mapping relations adjustment QKD system and the work of fine Transmission system altogether of the signal parameter of current optical communication system, and configuration
Make parameter.
The specific implementation of this step determines that system transmission performance deteriorates according to monitoring result, i.e., is not able to satisfy performance indicator and wants
When asking, the running parameter to QKD system and total fine Transmission system is needed to be adjusted.
The signal parameter of QKD system includes: the quantum channel bit error rate and security key rate；The deterioration of QKD system performance is first
It is secret-key rate reduction, then be seriously then that the bit error rate is out-of-limit to lead to that key cannot be generated completely.
The signal parameter determination for the QKD system that the basis monitors is not able to satisfy default capabilities index request, specifically:
When the quantum channel bit error rate is greater than default ber value and/or security key rate is less than scheduled rate value, really
Settled preceding system performance is not able to satisfy default capabilities index request.
According to the variation of quantum channel bit error rate parameter, can reflect in total fine transmission process, optical communication system business letter
Number wavelength window, shadow of the factors such as radio frequency channel quantity and optical power for transmission performance and security key rate in QKD system
It rings, by the running parameter of dynamic regulation QKD system and total fine Transmission system, guarantees under total fine transmission conditions, QKD system
It can stablize and meet index request.
Embodiment two
Referring to fig. 2, Fig. 2 is quantum key distribution and the total fine transmission flow schematic diagram of optic communication in the embodiment of the present application two.
Specific steps are as follows:
Step 201, in the total fine transmission course of work, control equipment receives the light that fine Transmission system is monitored and sent altogether
The signal parameter of communication system.
Step 202, when the control equipment determines that the variation of the signal parameter of optical communication system meets preset condition, according to
The signal parameter of the current optical communication system monitored, and the mapping relations of configuration reconfigure QKD system and altogether fine transmission
The operating mode and running parameter of system.
Determining that the variation of the signal parameter of optical communication system meets preset condition in this step is the signal of optical communication system
Parameter the case where there are one of the following or any combination:
The transmission direction of business optical signal changes, and operating wavelength windows change, and the changing value of optical power is greater than
Second predetermined power threshold value.
Second predetermined power threshold value is greater than the first predetermined power threshold value.
Here the variation of optical power refers to the mutation of optical power.When the mutation of optical power is more than predetermined threshold value, lead to QKD
Error rate of system transfinites and cannot generate key.
When the control equipment determines that the variation of the signal parameter of optical communication system meets preset condition, optic communication system is determined
System has been likely to occur the great change of traffic reconfiguration or physical layer reconfigured.
With reference to the accompanying drawing, the tool of detailed description quantum key distribution and each modular unit in optic communication altogether fine Transmission system
Body is realized.
It is quantum key distribution and the total fine Transmission system schematic diagram of optic communication in the embodiment of the present application referring to Fig. 3, Fig. 3.
As fine Transmission system includes optical communication system, QKD system and total fibre to the quantum key distribution in Fig. 3 altogether with optic communication
Transmission system.
Wherein, connection, interaction and the existing reality between three optical communication system, QKD system and total fine Transmission system systems
It is now consistent, the module of monitoring, configuration and adjustment function, referred to as system control module are realized in the application, i.e., are referred to as above
Control equipment.
For optical communication system, transmission method fine altogether provided by the present application is completely saturating for optical communication system service signal
It is bright.
It include: tunable optical source module and QKD transceiver module in the system for QKD system；
Wherein, tunable optical module generates the light letter of three road different wave lengths using Wavelength tunable laser as light source
Number, as the input of QKD system, the wavelength window of each road optical signal therein is settable, and operation wavelength is adjustable.
The application provides a kind of specific implementation example, but is not limited to this kind citing and realizes:
When optical communication system business optical signal is transmitted using the C-band of 1550nm wavelength window, 1310nm is used
As the light source working wavelength of quantum optical signal, 1490nm is used to use as the light source working wavelength of synchronous optical signal
1570nm is as the light source working wavelength for negotiating optical signal.
QKD transceiver module is the core component of QKD system, and major function includes quantum state modulation, inveigles state tune
System, single photon magnitude optical power attenuation, quantum state demodulation, photon detection receives and protocol algorithm processing, for realizing QKD system
Quantum key it is shared.
The operating mode of QKD transceiver module is duplex simultaneous two-way, the gated acquisition frequency and door of photon detector therein
Control pulse width parameter can be adjusted on demand.
For total fine Transmission system, which includes Wavelength division multiplexing module and optical communication interface module.
Wherein, Wavelength division multiplexing module is made of wavelength division multiplexer and optical band pass filter, for complete optic communication signal and
The wavelength-division multiplex and demultiplexing of QKD system signal.Wherein the different wave length port of wavelength division multiplexer is pressed using optical path selection switch
It need to switch over, the gating for realizing different Q KD signal transmission direction and the selection of fine transmission operating mode altogether.Optical band pass filter
Central wavelength and passband width can be adjusted on demand, under the conditions of meeting different optical communication system business optical signal powers
QKD transceiver module photon detector filtering requirements.
Optical communication interface module, for realizing the access of optical communication system business optical signal, and to different wave length window into
Row power detection and compare, determine the transmission direction of optical communication system, operating wavelength windows and optical power, is QKD system and altogether
The setting of fine Transmission system provides reference.Adjustable optical attenuator is used simultaneously, realizes the function to input light communication service optical signal
The on-demand adjustment of rate.
System control module is completed to tunable optical source module for receiving the detection information of optical communication interface module,
The setting of the operating mode and running parameter of QKD transceiver module, Wavelength division multiplexing module and optical communication interface module.
By the real-time monitoring of the performance parameter to QKD transceiver, complete to QKD transceiver module and optical communication interface mould
The feedback control of block.When the reconstruct of optical communication system optical signal or physical layer state change, above-mentioned module is reconfigured.
If the key code rate of QKD system declines or the bit error rate rises, above method is referred to, adjusts QKD system
With the parameter of total fine system, such as increase attenuated optical signal, or the working frequency etc. of increase QKD.
When the application implements, system control module is based on field programmable gate array (FPGA) platform and realizes that parameter is adopted
Collection and system configuration.
For the tunable optical source module in Fig. 3, tunable laser realization can be used, QKD transceiver module can make
With QKD transceiver implementation, optical band pass filter can be used for Wavelength division multiplexing module and wavelength division multiplexer is realized, optical communication interface mould
The realization of optic communication adapter can be used in block, and FPGA controller realization can be used in system control module.
Quantum key distribution provided by the present application and optic communication fine transmission process altogether are realized with specific vigour part below.
Referring to fig. 4, Fig. 4 is the system schematic that FPGA carries out parameter adjustment configuration in the embodiment of the present application.
Wavelength window and optical power detection module in Fig. 4 in optic communication adapter is to optical communication system business optical signal
Work transmission direction, and operating wavelength windows and optical power are detected, and the parameter information of business optical signal is reported FPGA control
Device.Then, tunable laser is configured, generates the light pulse signal of 1310nm, 1490nm and 1570nm, received as QKD
The optical signal of hair machine inputs.QKD transmitter operating mode and running parameter are set, the quantum optical signal of 1310nm wavelength is generated,
Operating mode and work is arranged in the synchronization optical signal of 1490nm wavelength and the negotiation optical signal of 1570nm wavelength in QKD transceiver
Make parameter, keep demodulator consistent with transmitter-modulator working method, the gate working frequency and transmitting of photon detector are set
The pulse recurrence frequency of machine is consistent, and gating pulse width is set as 100ps.Each photo-signal channel of optical band pass filter is set
Central wavelength and filtering bandwidth, wherein the central wavelength of quantum optical signal and the output wavelength of tunable laser are consistent, filtering
Device passband width is 100GHz.The corresponding ports of channel join-splitting device in wavelength division multiplexer are gated, QKD system and light are led to
Letter system is set as symport.
In the total fine transmission course of work, FPGA controller is to the business optical power and operation wavelength in optic communication adapter
Window is monitored, at the same in QKD transceiver the quantum signal bit error rate and quantum key fine rate is monitored altogether, producing
Under raw transmission performance deterioration condition, the running parameter of optical band pass filter and QKD transceiver is adjusted, guarantees QKD system
Transmission performance meets system index requirement.
When optical communication system traffic reconfiguration or physical layer configurations convert, FPGA controller receives the industry of optic communication adapter
Be engaged in change in optical signal, when meeting preset condition, according to new business light running parameter, to QKD system and altogether fine Transmission system into
Capable adaptive configuration again.
Based on same inventive concept, the application also proposes that a kind of quantum key point is filled with the total fine transmission of optical communication system
It sets.Referring to Fig. 5, Fig. 5 is the apparatus structure schematic diagram for being applied to above-mentioned technology in the embodiment of the present application.The device includes: to receive
Unit 501, configuration unit 502, monitoring unit 503 and processing unit 504；
Receiving unit 501, the signal parameter of optical communication system for detecting and sending for receiving total fine Transmission system；
Configuration unit 502, the signal parameter of the photosystem for configuration, the work with QKD system and total fine Transmission system
The mapping relations of mode and running parameter；When receiving unit 501 receives the optic communication that total fine Transmission system is detected and sent
The signal parameter of system initializes QKD system according to the mapping relations of the signal parameter of the optical communication system received, and configuration
System and the altogether operating mode and running parameter of fine Transmission system；
Monitoring unit 503, for monitoring the signal parameter of QKD system in the total fine transmission course of work；
Processing unit 504, for when the light function in the signal parameter for the optical communication system that determining receiving unit 501 receives
The variation of rate is greater than the first predetermined power threshold value, and the signal parameter determination of the QKD system monitored according to monitoring unit 503 is worked as
It is single according to the signal parameter of current optical communication system, and configuration when preceding system performance is not able to satisfy default capabilities index request
The mapping relations adjustment QKD system of 502 configuration of member and the altogether running parameter of fine Transmission system.
Preferably,
The signal parameter of the optical communication system includes: the transmission direction of business optical signal, operating wavelength windows and light function
Rate；
The operating mode of the QKD system is the transmission direction of QKD system signal；The running parameter packet of the QKD system
Transmitter optical source wavelength is included, pulse recurrence frequency inveigles state modulation parameter and receiver detector gating parameter；
The operating mode of the Transmission system fine altogether is channel join-splitting device operating mode relevant to transmission direction；The fibre altogether
The running parameter of Transmission system includes the decaying of optical communication system service signal, channel join-splitting device Working mould relevant to wavelength window
Formula, optical filter central wavelength and passband parameter；
The mapping relations are as follows: the transmission direction and QKD system signal of business optical signal fine transmission, and transmission direction phase altogether
Together；
Operating wavelength windows are corresponding with transmitter optical source wavelength；Optical power and pulse recurrence frequency inveigle state modulation ginseng
Number is corresponding with receiver detector gating parameter；
Channel join-splitting device and wavelength window of the operating wavelength windows of optical communication system business optical signal with fine Transmission system altogether
Relevant operating mode, optical filter central wavelength and passband parameter are corresponding；
The optical power of business optical signal is corresponding with the optical power attenuation of fine Transmission system and optical filter passband altogether.
Preferably,
Processing unit 504 is further used in the total fine transmission course of work, when the signal of the determination optical communication system is joined
When several variations meets preset condition, closed according to the mapping of the signal parameter of the current optical communication system monitored, and configuration
System reconfigures QKD system and the altogether operating mode and running parameter of fine Transmission system.
Preferably, the variation of the signal parameter of the determining optical communication system meets preset condition is, optical communication system
Signal parameter the case where there are one of the following or any combination: the transmission direction of business optical signal changes, operation wavelength window
Mouth changes, and the changing value of optical power is greater than the second predetermined power threshold value；Wherein, it is pre- to be greater than first for the second predetermined power threshold value
If power threshold.
The unit of above-described embodiment can integrate in one, can also be deployed separately；It can be merged into a unit, it can also
To be further split into multiple subelements.
In conclusion optical signal parameters of the application by detection optical communication system, it can be to QKD system and total fine transmission
System carries out Automatic Optimal configuration, carries out Real-time Feedback adjustment according to working state of system, and in optical communication system signal reconstruction
When changing with physical layer state, reconfiguring for progress QKD system and altogether fine Transmission system can be realized system automation and match
It sets, and improves QKD system transmission performance.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent substitution, improvement and etc. done be should be included within the scope of the present invention.
Claims (10)
1. a kind of quantum key distribution QKD and the total fine transmission method of optical communication system, which is characterized in that the letter of the photosystem of configuration
Number parameter, with QKD system and the altogether fine operating mode of Transmission system and the mapping relations of running parameter；This method comprises:
The signal parameter of optical communication system that total fine Transmission system is detected and sent is received, according to the optic communication system received
The signal parameter of system, and the mapping relations initialization QKD system of configuration are joined with the operating mode of fine Transmission system and work altogether
Number；
In the total fine transmission course of work, the signal parameter of QKD system is monitored, and it is logical to receive the light that fine Transmission system monitors altogether
The signal parameter of letter system；
When the variation of the optical power in the signal parameter for determining optical communication system is greater than the first predetermined power threshold value, and according to monitoring
To the signal parameter of QKD system determine that current system performance is not able to satisfy default capabilities index request when, it is logical according to current light
The signal parameter of letter system, and the mapping relations adjustment QKD system and the running parameter of fine Transmission system altogether of configuration.
2. the method according to claim 1, wherein
The signal parameter of the optical communication system includes: the transmission direction of business optical signal, operating wavelength windows and optical power；
The operating mode of the QKD system is the transmission direction of QKD system signal；The running parameter of the QKD system includes hair
Machine optical source wavelength is penetrated, pulse recurrence frequency inveigles state modulation parameter and receiver detector gating parameter；
The operating mode of the Transmission system fine altogether is channel join-splitting device operating mode relevant to transmission direction；The transmission fine altogether
The running parameter of system includes the decaying of optical communication system service signal, channel join-splitting device operating mode relevant to wavelength window, light
Filter center wavelength and passband parameter；
The mapping relations are as follows: the fine transmission altogether of the transmission direction and QKD system signal of business optical signal, and transmission direction is identical；
Operating wavelength windows are corresponding with transmitter optical source wavelength；Optical power and pulse recurrence frequency, inveigle state modulation parameter and
Receiver detector gating parameter is corresponding；
The operating wavelength windows of optical communication system business optical signal are related to wavelength window with the channel join-splitting device of fine Transmission system altogether
Operating mode, optical filter central wavelength and passband parameter are corresponding；
The optical power of business optical signal is corresponding with the optical power attenuation of fine Transmission system and optical filter passband altogether.
3. the method according to claim 1, wherein
The signal parameter of the QKD system includes the quantum channel bit error rate and security key rate.
4. according to the method described in claim 3, it is characterized in that, the signal parameter determination of the QKD system monitored is worked as
Preceding system performance is not able to satisfy default capabilities index request, comprising:
When the quantum channel bit error rate is greater than default ber value and/or security key rate is less than scheduled rate value, determination is worked as
Preceding system performance is not able to satisfy default capabilities index request.
5. the method according to claim 1, wherein the method further includes:
In the total fine transmission course of work, the signal parameter of optical communication system that fine Transmission system altogether is monitored and sent is received；
When the variation of the signal parameter of the determination optical communication system meets preset condition, according to the current optic communication system monitored
The signal parameter of system, and the mapping relations of configuration reconfigure QKD system and the altogether operating mode of fine Transmission system and work
Parameter.
6. according to the method described in claim 5, its feature is as the variation of the signal parameter of the determining optical communication system is full
Sufficient preset condition is, the signal parameter of optical communication system the case where there are one of the following or any combination:
The transmission direction of business optical signal changes, and operating wavelength windows change, and the changing value of optical power is greater than second
Predetermined power threshold value；Wherein, the second predetermined power threshold value is greater than the first predetermined power threshold value.
7. a kind of quantum key distribution QKD and the total fine transmitting device of optical communication system, which is characterized in that the device includes: to receive
Unit, configuration unit, monitoring unit and processing unit；
The receiving unit, the signal parameter of optical communication system for detecting and sending for receiving total fine Transmission system；
The configuration unit, the signal parameter of the photosystem for configuration, the operating mode with QKD system and total fine Transmission system
With the mapping relations of running parameter；When the receiving unit receives the optical communication system that total fine Transmission system is detected and sent
Signal parameter, according to the signal parameter of the optical communication system received, and configuration mapping relations initialization QKD system and
The operating mode and running parameter of fibre Transmission system altogether；
The monitoring unit, for monitoring the signal parameter of QKD system in the total fine transmission course of work；
The processing unit, for when the optical power in the signal parameter for the optical communication system that the determining receiving unit receives
Variation be greater than the first predetermined power threshold value, and the QKD system monitored according to the monitoring unit signal parameter determination work as
When preceding system performance is not able to satisfy default capabilities index request, according to the signal parameter of current optical communication system and described match
Set the mapping relations adjustment QKD system of unit configuration and the running parameter of total fine Transmission system.
8. device according to claim 7, which is characterized in that
The signal parameter of the optical communication system includes: the transmission direction of business optical signal, operating wavelength windows and optical power；
The operating mode of the QKD system is the transmission direction of QKD system signal；The running parameter of the QKD system includes hair
Machine optical source wavelength is penetrated, pulse recurrence frequency inveigles state modulation parameter and receiver detector gating parameter；
The operating mode of the Transmission system fine altogether is channel join-splitting device operating mode relevant to transmission direction；The transmission fine altogether
The running parameter of system includes the decaying of optical communication system service signal, channel join-splitting device operating mode relevant to wavelength window, light
Filter center wavelength and passband parameter；
The mapping relations are as follows: the fine transmission altogether of the transmission direction and QKD system signal of business optical signal, and transmission direction is identical；
Operating wavelength windows are corresponding with transmitter optical source wavelength；Optical power and pulse recurrence frequency, inveigle state modulation parameter and
Receiver detector gating parameter is corresponding；
The operating wavelength windows of optical communication system business optical signal are related to wavelength window with the channel join-splitting device of fine Transmission system altogether
Operating mode, optical filter central wavelength and passband parameter are corresponding；
The optical power of business optical signal is corresponding with the optical power attenuation of fine Transmission system and optical filter passband altogether.
9. device according to claim 7 or 8, which is characterized in that
The processing unit is further used in the total fine transmission course of work, when the signal parameter of the determination optical communication system
Variation when meeting preset condition, according to the signal parameter of the current optical communication system monitored, and the mapping relations of configuration
Reconfigure QKD system and the altogether operating mode and running parameter of fine Transmission system.
10. device according to claim 9, feature is as the variation of the signal parameter of the determining optical communication system
Meeting preset condition is, the signal parameter of optical communication system the case where there are one of the following or any combination: business optical signal
Transmission direction changes, and operating wavelength windows change, and the changing value of optical power is greater than the second predetermined power threshold value；Its
In, the second predetermined power threshold value is greater than the first predetermined power threshold value.
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