CN107508639A - Wavelength division multiplexing type quantum cryptography communication device and transmission method based on PON - Google Patents
Wavelength division multiplexing type quantum cryptography communication device and transmission method based on PON Download PDFInfo
- Publication number
- CN107508639A CN107508639A CN201710796044.3A CN201710796044A CN107508639A CN 107508639 A CN107508639 A CN 107508639A CN 201710796044 A CN201710796044 A CN 201710796044A CN 107508639 A CN107508639 A CN 107508639A
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- Prior art keywords
- wavelength division
- quantum
- division multiplexer
- quantum cryptography
- cryptography communication
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
- H04L9/0816—Key establishment, i.e. cryptographic processes or cryptographic protocols whereby a shared secret becomes available to two or more parties, for subsequent use
- H04L9/0852—Quantum cryptography
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/25—Arrangements specific to fibre transmission
- H04B10/2589—Bidirectional transmission
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/70—Photonic quantum communication
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/02—Wavelength-division multiplex systems
- H04J14/0201—Add-and-drop multiplexing
- H04J14/0202—Arrangements therefor
- H04J14/0204—Broadcast and select arrangements, e.g. with an optical splitter at the input before adding or dropping
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
- H04L9/0816—Key establishment, i.e. cryptographic processes or cryptographic protocols whereby a shared secret becomes available to two or more parties, for subsequent use
- H04L9/0819—Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s)
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Computer Security & Cryptography (AREA)
- Theoretical Computer Science (AREA)
- Optics & Photonics (AREA)
- Optical Communication System (AREA)
Abstract
The invention discloses a kind of wavelength division multiplexing type quantum cryptography communication device and transmission method based on PON, including multiple transmitting terminals, optical branching device and receiving terminal, transmitting terminal includes ONU equipment, quantum cryptography communication equipment transmitting terminal, notch filter and the first wavelength division multiplexer, receiving terminal includes the second wavelength division multiplexer, narrow band filter, quantum cryptography communication equipment receiving terminal and OLT device, ONU equipment is connected with notch filter, notch filter and quantum cryptography communication equipment transmitting terminal are connected with the first wavelength division multiplexer, first wavelength division multiplexer is connected by optical branching device with the second wavelength division multiplexer, second wavelength division multiplexer is connected with narrow band filter and OLT device respectively, narrow band filter is connected with quantum cryptography communication equipment receiving terminal, the first wavelength division multiplexer is connected with optical branching device in multiple transmitting terminals；The present invention is realized the fine transmission altogether of PON equipment and quantum cryptography communication equipment, overcomes interference of the PON equipment to quantum light.
Description
Technical field
The present invention relates to cipher key distribution technique field, and in particular to a kind of wavelength division multiplexing type quantum cryptography based on PON is led to
T unit and transmission method.
Background technology
As quantum key distribution technology reaches its maturity, the scheme based on fiber quantum key distribution still suffers from some and asked
Topic, as building for quantum key distribution network needs to lay special quantum channel, individually lay special quantum channel optical fiber and make
Into high cost, wavelength-division multiplex can not be carried out with existing PON equipment, main reason is that the light intensity of PON equipment transmission is too strong, it is right
Quantum light interference it is too big, cause quantum-key distribution equipment can not normal operation, therefore at present be badly in need of one kind can realize that PON is set
The standby device with the common fine transmission of quantum cryptography communication equipment.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of wavelength-division based on PON for above-mentioned the deficiencies in the prior art
Composite quantum cryptography communication device and transmission method, based on PON wavelength division multiplexing type quantum cryptography communication device and transmission
Method is realized the fine transmission altogether of PON equipment and quantum cryptography communication equipment, overcomes interference of the PON equipment to quantum light, solves
Due to high cost caused by laying special quantum channel optical fiber, quantum cryptography networks deployment is simplified.
To realize above-mentioned technical purpose, the technical scheme that the present invention takes is：
A kind of wavelength division multiplexing type quantum cryptography communication device based on PON, including transmitting terminal, optical branching device and receiving terminal, it is described
Transmitting terminal includes ONU equipment, quantum cryptography communication equipment transmitting terminal, notch filter and the first wavelength division multiplexer, the reception
End includes the second wavelength division multiplexer, narrow band filter, quantum cryptography communication equipment receiving terminal and OLT device, the ONU equipment and
Notch filter is connected, and notch filter and quantum cryptography communication the equipment transmitting terminal is connected with the first wavelength division multiplexer,
First wavelength division multiplexer is connected with optical branching device, and the optical branching device is connected with the second wavelength division multiplexer, second ripple
Division multiplexer is connected with narrow band filter and OLT device respectively, the narrow band filter and quantum cryptography communication equipment receiving terminal
Connection, the transmitting terminal are multiple, and the first wavelength division multiplexer in multiple transmitting terminals is connected with optical branching device.
As further improved technical scheme of the present invention, the ONU equipment is connected with notch filter by optical fiber, institute
State notch filter and quantum cryptography communication equipment transmitting terminal is connected by optical fiber with the first wavelength division multiplexer, multiple described
One wavelength division multiplexer is connected by optical fiber with optical branching device, and the optical branching device is connected by optical fiber with the second wavelength division multiplexer,
Second wavelength division multiplexer is connected by optical fiber with narrow band filter and OLT device respectively, and the narrow band filter passes through light
Fibre is connected with quantum cryptography communication equipment receiving terminal.
As further improved technical scheme of the present invention, the quantum light of the quantum cryptography communication equipment transmitting terminal output
Wavelength be 1549.32nm.
As further improved technical scheme of the present invention, the quantum cryptography communication equipment transmitting terminal and quantum cryptography are led to
Letter equipment receiving terminal uses quantum-key distribution terminal.
To realize above-mentioned technical purpose, another technical scheme that the present invention takes is：
A kind of transmission method of the wavelength division multiplexing type quantum cryptography communication device based on PON, comprises the following steps：
Step 1：ONU equipment sends classical light and by classical optical transport to notch filter；
Step 2：Notch filter filters the quantum light co-wavelength that is sent in classical light with quantum cryptography communication equipment transmitting terminal
Bias light；
Step 3：The quantum light that classical light and quantum cryptography communication the equipment transmitting terminal that notch filter transmits out is sent is together
Into the first wavelength division multiplexer；
Step 4：Classical light and quantum recovery are used in an optical fiber and are transferred to optical branching device by the first wavelength division multiplexer, light point
Road device receives the multiplexed optical that the first wavelength division multiplexer transmission in multiple transmitting terminals comes and multiplexed optical is merged into same root optical fiber
Interior, optical branching device transmits the multiplexed optical after merging to the second wavelength division multiplexer；
Step 5：Second wavelength division multiplexer is separated classical light and the quantum light in multiplexed optical, and the second wavelength division multiplexer will be measured
Sub-light is transferred to narrow band filter, and the second wavelength division multiplexer is by classical optical transport to OLT device；
Step 6：Narrow band filter filters the spuious and back wave of quantum light and by quantum optical transport to quantum cryptography communication equipment
Receiving terminal.
The present invention realizes merging for PON equipment and quantum cryptography communication equipment by wavelength-division multiplex technique；Lead in receiving terminal
Cross narrow band filter and remove interference of the channel to quantum light；Pass through notch filter in transmitting terminal（Wavelength is identical with quantum, bandwidth
It is wider than quantum light）To filter out the crosstalk of classical trimmed book bottom that ONU equipment sends to quantum light；The present invention can pass through a reception
The corresponding a plurality of transmitting terminal in end is disposed, and realizes one-to-many relation；The present invention reforms existing quantum cryptography communication solution,
The wavelength division multiplexing type quantum cryptography communication device based on PON is designed, is realized PON equipment and quantum cryptography communication equipment is fine altogether
Transmission, interference of the light intensity of ONU equipment transmission to quantum light is eliminated, solved because laying special quantum channel optical fiber causes
High cost, simplify quantum cryptography networks deployment.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
Embodiment
The specific embodiment of the present invention is made below according to Fig. 1 and being illustrated:
Referring to Fig. 1, a kind of wavelength division multiplexing type quantum cryptography communication device based on PON, including transmitting terminal, optical branching device and reception
End, the transmitting terminal include ONU equipment, quantum cryptography communication equipment transmitting terminal, notch filter and the first wavelength division multiplexer, institute
Stating receiving terminal includes the second wavelength division multiplexer, narrow band filter, quantum cryptography communication equipment receiving terminal and OLT device, the ONU
Equipment is connected with notch filter, notch filter and quantum cryptography communication the equipment transmitting terminal with the first wavelength division multiplexer
Connection, first wavelength division multiplexer is connected with optical branching device, and the optical branching device is connected with the second wavelength division multiplexer, and described the
Two wavelength division multiplexers are connected with narrow band filter and OLT device respectively, and the narrow band filter connects with quantum cryptography communication equipment
Receiving end connects, and the transmitting terminal is multiple, and the first wavelength division multiplexer in multiple transmitting terminals is connected with optical branching device.This implementation
Quantum cryptography communication equipment transmitting terminal in example is used for emission measure sub-light, and quantum cryptography communication equipment receiving terminal is used to receive quantum
Light；ONU equipment is used to send classical light, and notch filter is used to filter the bias light in classical light with quantum light co-wavelength, the
One wavelength division multiplexer is used to use classical light and quantum recovery in a piece optical fiber, and optical branching device is used to receive multiple first wavelength-divisions
Multiplexed optical is simultaneously merged into same root optical fiber by the next multiplexed optical of multiplexer transmission, and the second wavelength division multiplexer is used in multiplexed optical
Classical light and quantum light separated, OLT device is used to receive classical light, and narrow band filter is used to filter the spuious of quantum light
With back wave and by quantum optical transport to quantum cryptography communication equipment receiving terminal.Because the optical branching device in PON system is to be based on
What light beam splitting was realized, so quantum light can only be sent from the lateral OLT sides of ONU.（Due to quantum just single photon send, if
ONU sides are sent to from OLT sides, when by optical branching device, single photon randomly chooses a channel transfer, and transmission will
In the presence of uncertainty）.
Preferably, ONU equipment is connected with notch filter by optical fiber in the present embodiment, the notch filter and quantum
Cryptographic Communications Equipment transmitting terminal is connected by optical fiber with the first wavelength division multiplexer, and multiple first wavelength division multiplexers pass through light
Fibre is connected with optical branching device, and the optical branching device is connected by optical fiber with the second wavelength division multiplexer, second wavelength division multiplexer
It is connected respectively by optical fiber with narrow band filter and OLT device, the narrow band filter is set by optical fiber and quantum cryptography communication
Standby receiving terminal connects.
Preferably, the wavelength for the quantum light that quantum cryptography communication equipment transmitting terminal exports is 1549.32nm in the present embodiment.
Preferably, quantum cryptography communication equipment transmitting terminal and quantum cryptography communication equipment receiving terminal use now in the present embodiment
There are the quantum-key distribution terminal or GHz quantum-key distribution terminal in technology.
Classical PON system includes OLT device, ONU equipment and the several parts of optical branching device, and up-downgoing uses two wavelength,
It is 1310nm and 1490nm respectively.This programme as shown in figure 1, OLT device sidepiece affix one's name to quantum cryptography communication equipment receiving terminal,
ONU equipment sidepiece affixes one's name to quantum cryptography communication equipment transmitting terminal, quantum gloss 1549.32nm.The warp that ONU equipment is sent out
Allusion quotation light filters the bias light in classical communication light with quantum light co-wavelength by notch filter, then passes through the first wavelength-division multiplex
Classical light and quantum light are multiplexed by device in ONU equipment side, and the second wavelength division multiplexer is in OLT device side by classical light and quantum
Light is divided, and filters out interference light by narrow band filter so as to realize the light to entering quantum Cryptographic Communications Equipment receiving terminal
It is filtered.Because OLT device and ONU equipment are one-to-many relations in PON system, same quantum Cryptographic Communications Equipment transmitting
End and receiving terminal also be one-to-many relation, one quantum cryptography communication equipment transmitting terminal of each ONU equipment sidepiece administration, by the
Classical light and quantum light are multiplexed by one wavelength division multiplexer, and quantum cryptography is carried out by the time-division between quantum cryptography communication equipment
Transmission.
The present embodiment also provides a kind of transmission method of the wavelength division multiplexing type quantum cryptography communication device based on PON, including
Following steps：
Step 1：The ONU equipment of multiple transmitting terminals sends classical light and by classical optical transport to notch filter；
Step 2：Notch filter filters the quantum light co-wavelength that is sent in classical light with quantum cryptography communication equipment transmitting terminal
Bias light；
Step 3：The quantum light that classical light and quantum cryptography communication the equipment transmitting terminal that notch filter transmits out is sent is together
Into the first wavelength division multiplexer；
Step 4：Classical light and quantum recovery are used in an optical fiber and are transferred to optical branching device by the first wavelength division multiplexer, light point
Road device receives the multiplexed optical that the first wavelength division multiplexer transmission in multiple transmitting terminals comes and multiplexed optical is merged into same root optical fiber
Interior, optical branching device transmits the multiplexed optical after merging to the second wavelength division multiplexer；
Step 5：Second wavelength division multiplexer is separated classical light and the quantum light in multiplexed optical, and the second wavelength division multiplexer will be measured
Sub-light is transferred to narrow band filter, and the second wavelength division multiplexer is by classical optical transport to OLT device；
Step 6：Narrow band filter filters the spuious and back wave of quantum light and by quantum optical transport to quantum cryptography communication equipment
Receiving terminal.
The present invention realizes merging for PON equipment and quantum cryptography communication equipment by wavelength-division multiplex technique；Filtered by arrowband
Wave technology removes interference of the channel to quantum light；Pass through notch filter（Wavelength is identical with quantum, and bandwidth is wider than quantum light）, with
Filter out crosstalk of the classical trimmed book bottom to quantum light；The present invention reforms existing quantum cryptography communication solution, designs based on PON
Wavelength division multiplexing type quantum cryptography communication device.Realize the fine transmission altogether of PON equipment and quantum cryptography communication equipment, solve by
In laying high cost caused by special quantum channel optical fiber, quantum cryptography networks deployment is simplified.
Protection scope of the present invention includes but is not limited to embodiment of above, and protection scope of the present invention is with claims
It is defined, any replacement being readily apparent that to those skilled in the art that this technology is made, deformation, improvement each fall within the present invention's
Protection domain.
Claims (5)
- A kind of 1. wavelength division multiplexing type quantum cryptography communication device based on PON, it is characterised in that：Including transmitting terminal, optical branching device And receiving terminal, the transmitting terminal are answered including ONU equipment, quantum cryptography communication equipment transmitting terminal, notch filter and the first wavelength-division With device, the receiving terminal includes the second wavelength division multiplexer, narrow band filter, quantum cryptography communication equipment receiving terminal and OLT device, The ONU equipment is connected with notch filter, and notch filter and quantum cryptography communication the equipment transmitting terminal is and first wave Division multiplexer is connected, and first wavelength division multiplexer is connected with optical branching device, and the optical branching device and the second wavelength division multiplexer connect Connect, second wavelength division multiplexer is connected with narrow band filter and OLT device respectively, and the narrow band filter leads to quantum cryptography Believe the connection of equipment receiving terminal, the transmitting terminal is multiple, and the first wavelength division multiplexer in multiple transmitting terminals connects with optical branching device Connect.
- 2. the wavelength division multiplexing type quantum cryptography communication device according to claim 1 based on PON, it is characterised in that：It is described ONU equipment is connected with notch filter by optical fiber, and notch filter and quantum cryptography communication the equipment transmitting terminal passes through Optical fiber is connected with the first wavelength division multiplexer, and multiple first wavelength division multiplexers are connected by optical fiber with optical branching device, the light Shunt is connected by optical fiber with the second wavelength division multiplexer, and second wavelength division multiplexer passes through optical fiber and narrow band filter respectively Connected with OLT device, the narrow band filter is connected by optical fiber with quantum cryptography communication equipment receiving terminal.
- 3. the wavelength division multiplexing type quantum cryptography communication device according to claim 1 based on PON, it is characterised in that：It is described The wavelength of the quantum light of quantum cryptography communication equipment transmitting terminal output is 1549.32nm.
- 4. the wavelength division multiplexing type quantum cryptography communication device according to claim 1 based on PON, it is characterised in that：It is described Quantum cryptography communication equipment transmitting terminal and quantum cryptography communication equipment receiving terminal use quantum-key distribution terminal.
- 5. a kind of transmission method of the wavelength division multiplexing type quantum cryptography communication device according to claim 1 based on PON, its It is characterised by：Comprise the following steps：Step 1：ONU equipment sends classical light and by classical optical transport to notch filter；Step 2：Notch filter filters the quantum light co-wavelength that is sent in classical light with quantum cryptography communication equipment transmitting terminal Bias light；Step 3：The quantum light that classical light and quantum cryptography communication the equipment transmitting terminal that notch filter transmits out is sent is together Into the first wavelength division multiplexer；Step 4：Classical light and quantum recovery are used in an optical fiber and are transferred to optical branching device by the first wavelength division multiplexer, light point Road device receives the multiplexed optical that the first wavelength division multiplexer transmission in multiple transmitting terminals comes and multiplexed optical is merged into same root optical fiber Interior, optical branching device transmits the multiplexed optical after merging to the second wavelength division multiplexer；Step 5：Second wavelength division multiplexer is separated classical light and the quantum light in multiplexed optical, and the second wavelength division multiplexer will be measured Sub-light is transferred to narrow band filter, and the second wavelength division multiplexer is by classical optical transport to OLT device；Step 6：Narrow band filter filters the spuious and back wave of quantum light and by quantum optical transport to quantum cryptography communication equipment Receiving terminal.
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| CN201710796044.3A CN107508639A (en) | 2017-09-06 | 2017-09-06 | Wavelength division multiplexing type quantum cryptography communication device and transmission method based on PON |
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| CN201710796044.3A CN107508639A (en) | 2017-09-06 | 2017-09-06 | Wavelength division multiplexing type quantum cryptography communication device and transmission method based on PON |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110324105A (en) * | 2018-03-30 | 2019-10-11 | 上海国盾量子信息技术有限公司 | Quantum key distribution system and the total fine transmission method of PON equipment and system |
| CN109039476B (en) * | 2018-07-26 | 2020-05-19 | 中国科学院半导体研究所 | Vector microwave signal generation system based on photoelectric oscillator |
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| CN103929251A (en) * | 2014-04-22 | 2014-07-16 | 华南师范大学 | Low noise QKD and WDM classic communication network compatible method and device |
| CN105680948A (en) * | 2016-03-17 | 2016-06-15 | 北京邮电大学 | Wavelength allocation method for quantum signal and classical optical signal common-optical fiber transmission |
| CN106487508A (en) * | 2016-10-28 | 2017-03-08 | 北京邮电大学 | A kind of quantum-key distribution and wavelength-division multiplex optical access network fusion method |
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2017
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Patent Citations (4)
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| US7248695B1 (en) * | 2006-02-10 | 2007-07-24 | Magiq Technologies, Inc. | Systems and methods for transmitting quantum and classical signals over an optical network |
| CN103929251A (en) * | 2014-04-22 | 2014-07-16 | 华南师范大学 | Low noise QKD and WDM classic communication network compatible method and device |
| CN105680948A (en) * | 2016-03-17 | 2016-06-15 | 北京邮电大学 | Wavelength allocation method for quantum signal and classical optical signal common-optical fiber transmission |
| CN106487508A (en) * | 2016-10-28 | 2017-03-08 | 北京邮电大学 | A kind of quantum-key distribution and wavelength-division multiplex optical access network fusion method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110324105A (en) * | 2018-03-30 | 2019-10-11 | 上海国盾量子信息技术有限公司 | Quantum key distribution system and the total fine transmission method of PON equipment and system |
| CN110324105B (en) * | 2018-03-30 | 2023-11-28 | 上海国盾量子信息技术有限公司 | Quantum key distribution system and PON equipment common fiber transmission method and system |
| CN109039476B (en) * | 2018-07-26 | 2020-05-19 | 中国科学院半导体研究所 | Vector microwave signal generation system based on photoelectric oscillator |
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Application publication date: 20171222 |