CN115225157B - Dynamic encryption communication terminal, system and method based on optical fiber coding - Google Patents
Dynamic encryption communication terminal, system and method based on optical fiber coding Download PDFInfo
- Publication number
- CN115225157B CN115225157B CN202210661929.3A CN202210661929A CN115225157B CN 115225157 B CN115225157 B CN 115225157B CN 202210661929 A CN202210661929 A CN 202210661929A CN 115225157 B CN115225157 B CN 115225157B
- Authority
- CN
- China
- Prior art keywords
- optical fiber
- light wave
- optical
- output
- communication terminal
- Prior art date
- 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.)
- Active
Links
Classifications
-
- 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
- H04B10/50—Transmitters
- H04B10/516—Details of coding or modulation
-
- 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
- H04B10/50—Transmitters
- H04B10/508—Pulse generation, e.g. generation of solitons
-
- 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
- H04B10/50—Transmitters
- H04B10/572—Wavelength control
-
- 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
- H04B10/80—Optical aspects relating to the use of optical transmission for specific applications, not provided for in groups H04B10/03 - H04B10/70, e.g. optical power feeding or optical transmission through water
- H04B10/85—Protection from unauthorised access, e.g. eavesdrop protection
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Optical Communication System (AREA)
Abstract
A dynamic encryption communication terminal, system and method based on optical fiber coding, wherein the terminal comprises a multi-light source selection output module, a circulator, an optical fiber coder, a spectrum processing module and a main controller. By adopting the multi-light source selection output module, a pulse light wave with one central wavelength or a pulse light wave with a plurality of coupled central wavelengths can be output according to actual needs; by adopting the circulator, the pulsed light wave can be transmitted to the outside or reflected light waves transmitted by the opposite-side communication terminal can be received; by adopting the optical fiber encoder, the data of one or more central wavelengths can be encoded and encrypted by the transmitted pulse light waves, and the encrypted light waves transmitted by the opposite side communication terminal can be reflected or transmitted by the corresponding central wavelengths, so that identifiable unique communication is realized. Meanwhile, the optical fiber encoder can perform temperature modulation to adjust the central wavelength of the optical fiber encoder, and the central wavelength of the terminal optical fiber encoders at two sides is continuously changed to perform encoding and decoding, so that dynamic data encryption and decryption are realized.
Description
Technical Field
The present invention relates to the field of optical fiber communications, and in particular, to a dynamic encryption communication terminal, system and method based on optical fiber encoding.
Background
In the current optical fiber communication, the difficulty of directly encrypting the optical wave is too large, and for a third party in the communication, the optical wave is relatively easy to crack compared with a single encryption mode, so that a multi-change encryption mode is lacking, and meanwhile, the technical requirement of the multi-change encryption mode in the communication is too high and is relatively difficult to realize.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides a dynamic encryption communication terminal based on optical fiber coding, which solves the problems that the security of a single encryption mode in the current optical fiber communication is insufficient, but the encryption mode with multiple changes is difficult to realize.
The invention also provides a dynamic encryption communication system based on the optical fiber code and a dynamic encryption communication method based on the optical fiber code.
An optical fiber code-based dynamic encryption communication terminal according to an embodiment of the first aspect of the present invention includes:
the multi-light source selection output module is used for outputting an output light wave with one central wavelength or a plurality of coupled output light waves with different central wavelengths;
the circulator comprises a first port, a second port and a third port, wherein the first port is connected with the output end of the multi-light source selection output module;
the input end of the optical fiber encoder is connected with the second port, and the output end of the optical fiber encoder is used for being connected with an external optical fiber;
the input end of the spectrum processing module is connected with the third port;
and the main controller is respectively and electrically connected with the multi-light source selection output module, the optical fiber encoder and the spectrum processing module.
The dynamic encryption communication terminal based on the optical fiber coding has the following advantages:
by adopting the multi-light source selection output module, a pulse light wave with one central wavelength or a pulse light wave with a plurality of coupled central wavelengths can be output according to actual needs; by adopting the circulator, the pulsed light wave can be transmitted to the outside or reflected light waves transmitted by the opposite-side communication terminal can be received; by adopting the optical fiber encoder, the data of one or more central wavelengths can be encoded and encrypted by the transmitted pulse light waves, and the encrypted light waves transmitted by the opposite side communication terminal can be transmitted by the corresponding central wavelengths, so that identifiable unique communication is realized. Meanwhile, the optical fiber encoders can perform temperature modulation to adjust the central wavelength and reflect encrypted light waves, so that the spectrum processing module of the opposite-side communication terminal outputs an electric signal after processing, and the main controller is driven to adjust a plurality of pulse light sources so as to ensure that the optical fiber encoders of the two-side terminals are uniform corresponding central wavelengths, and therefore, the central wavelengths of the optical fiber encoders of the two-side terminals can be continuously changed to perform encoding and decoding, and dynamic data encryption and decryption are achieved.
According to some embodiments of the invention, the multiple light source selection output module comprises:
the pulse light sources are electrically connected with the main controller and are respectively used for emitting light waves with different center wavelengths;
the input end of the light wave selection unit is respectively connected with the pulse light sources, the output end of the light wave selection unit is connected with the first port, the light wave selection unit is electrically connected with the main controller, and the light wave selection unit is used for processing light waves emitted by the pulse light sources and then outputting output light waves with one central wavelength or output light waves with different central wavelengths after coupling.
According to some embodiments of the present invention, the optical wave selecting unit adopts a wavelength division multiplexer, a plurality of input ends of the wavelength division multiplexer are respectively connected with the pulse light sources in a one-to-one correspondence manner, an output end of the wavelength division multiplexer is connected with the first port, and the wavelength division multiplexer is electrically connected with the main controller.
According to some embodiments of the invention, the optical wave selection unit adopts an optical switch, a plurality of input ends of the optical switch are respectively connected with a plurality of pulse light sources in a one-to-one correspondence manner, an output end of the optical switch is connected with the first port, and the optical switch is electrically connected with the main controller.
According to some embodiments of the present invention, the optical wave selection unit adopts an optical splitter, a plurality of input ends of the optical splitter are respectively connected with the pulse light sources in a one-to-one correspondence manner, an output end of the optical splitter is connected with the first port, and the optical splitter is electrically connected with the main controller.
According to some embodiments of the invention, the multi-light source selection output module further comprises a semiconductor optical amplifier, an input end of the semiconductor optical amplifier is connected with an output end of the optical wave selection unit, an output end of the semiconductor optical amplifier is connected with the first port, and the semiconductor optical amplifier is electrically connected with the main controller.
According to some embodiments of the invention, the spectral processing module comprises:
the input end of the spectrum acquisition unit is connected with the third port, and the spectrum acquisition unit is used for outputting an electric signal after processing an optical wave signal;
and the input end of the analog-to-digital conversion unit is electrically connected with the output end of the spectrum acquisition unit, and the output end of the analog-to-digital conversion unit is electrically connected with the main controller.
An embodiment of a dynamic encryption communication system based on optical fiber coding according to a second aspect of the present invention includes:
two dynamically encrypted communication terminals according to any one of the embodiments of the first aspect of the present invention;
and the optical fibers are connected between the output ends of the optical fiber encoders of the two dynamic encryption communication terminals.
The dynamic encryption communication system based on the optical fiber coding has at least the following beneficial effects:
the two same dynamic encryption communication terminals are connected through the optical fiber, so that communication between the two side terminals can be realized, and particularly, the data information can be transmitted in the form of optical fiber coding by utilizing each module in the two side terminals, so that identifiable unique communication is realized. Meanwhile, the optical fiber encoder can perform temperature modulation to adjust the central wavelength of the optical fiber encoder and reflect encrypted light waves, and the central wavelength of the terminal optical fiber encoders at two sides is continuously changed to perform encoding and decoding, so that dynamic data encryption and decryption are realized.
According to a third aspect of the present invention, a dynamic encryption communication method based on optical fiber coding is applied to a local side communication terminal, wherein the local side communication terminal and an opposite side communication terminal are connected through optical fibers, and the local side communication terminal and the opposite side communication terminal are both dynamic encryption communication terminals according to any one of the first aspect of the present invention;
the dynamic encryption communication method based on the optical fiber coding comprises the following steps:
generating an output light wave with one central wavelength or a plurality of coupled output light waves with different central wavelengths by a multi-light source selection output module;
transmitting the output light wave to an optical fiber encoder through a circulator, and encoding the output light wave according to one or more center wavelengths of the optical fiber encoder to output a first encrypted light wave;
transmitting the first encrypted light wave to the opposite-side communication terminal through an optical fiber, wherein the opposite-side communication terminal transmits the first encrypted light wave to an optical fiber encoder of the opposite-side communication terminal for transmission so as to obtain a first transmitted light wave;
and receiving the first reflected light wave reflected by the optical fiber encoder of the opposite-side communication terminal.
The dynamic encryption communication method based on the optical fiber coding has the following advantages:
in the communication terminal of the side, after being processed by the multi-light source selection output module, a plurality of pulse light waves with one central wavelength or pulse light waves with a plurality of coupled central wavelengths can be output, the optical fiber codes carry out data codes with one or a plurality of central wavelengths, encrypted light waves are output, and pulse light waves with other wavelengths can be used as interference light waves. The optical fiber encoder of the opposite side communication terminal transmits the received encrypted light wave, and the pulse light wave with the specific center wavelength carrying the data information is processed by the spectrum processing module and then is decoded by the main controller, so that the communication between the communication terminals is realized. The data encryption is realized by carrying out optical fiber coding on pulse light waves with a certain or a plurality of central wavelengths, and the pulse light waves with other wavelengths are used as interference, so that the data can be hidden during optical fiber transmission, thereby realizing encrypted communication. Meanwhile, the optical fiber encoder can finish the reflection of the encrypted optical wave, so that after the central wavelength of the optical fiber encoder is adjusted, the optical fiber encoder fed back to the opposite side communication terminal is used for adjusting the corresponding central wavelength, and the dynamic encryption and decryption can be realized by continuously changing the central wavelengths of the optical fiber encoders at the two side terminals.
According to some embodiments of the present invention, the dynamic encryption communication method based on optical fiber coding further comprises the following steps:
receiving a second encrypted light wave and transmitting the second encrypted light wave to an optical fiber encoder of the second encrypted light wave for transmission so as to obtain a second transmitted light wave, wherein the second encrypted light wave is obtained by encoding the optical fiber encoder of the opposite-side communication terminal;
the second transmitted light wave is transmitted to a main controller for data decoding after being processed by a spectrum processing module;
and after passing through the optical fiber encoder and the circulator of the first reflected light wave, the spectrum processing module processes and outputs control signals to the main controller so as to adjust a plurality of pulse light sources.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
fig. 1 is a schematic structural diagram of a dynamic encryption communication terminal according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the connection of a home side communication terminal, a contralateral side communication terminal, and an optical fiber according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a fiber optic encoder according to an embodiment of the present invention;
FIG. 4 is a flow chart of a dynamic encryption communication method based on fiber coding according to an embodiment of the present invention;
FIG. 5 is a schematic spectrum of an output light wave of a multi-light source selection output module according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of the spectrum of light waves transmitted in an optical fiber according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of the spectrum of light waves reflected by the optical fiber code of a contralateral communication terminal according to an embodiment of the present invention;
fig. 8 is a schematic spectrum of light waves transmitted by the optical fiber code of the opposite-side communication terminal according to an embodiment of the present invention.
Reference numerals:
a home communication terminal 100; a pulsed light source 110; a light wave selecting unit 120; a semiconductor optical amplifier 130; a circulator 140; a fiber optic encoder 150; a spectrum acquisition unit 160; an analog-to-digital conversion unit 170; a main controller 180;
a contralateral communication terminal 200;
an optical fiber 300.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
In the description of the present invention, the description of first, second, etc. is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, it should be understood that the direction or positional relationship indicated with respect to the description of the orientation, such as up, down, etc., is based on the direction or positional relationship shown in the drawings, is merely for convenience of describing the present invention and simplifying the description, and does not indicate or imply that the apparatus or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present invention can be determined reasonably by a person skilled in the art in combination with the specific content of the technical solution.
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings, in which it is apparent that the embodiments described below are some, but not all embodiments of the invention.
Referring to fig. 1, a dynamic encryption communication terminal based on optical fiber coding according to an embodiment of the present invention includes a multi-light source selection output module, a circulator 140, an optical fiber encoder 150, a spectrum processing module, and a main controller 180. The multi-light source selection output module is used for outputting an output light wave with one central wavelength or a plurality of coupled output light waves with different central wavelengths; the circulator 140 comprises a first port, a second port and a third port, wherein the first port is connected with the output end of the multi-light source selection output module; the input end of the optical fiber encoder 150 is connected with the second port, and the output end is used for being connected with the external optical fiber 300; the input end of the spectrum processing module is connected with the third port; the main controller 180 is electrically connected to the multiple light source selection output module, the optical fiber encoder 150, and the spectrum processing module, respectively.
The dynamic encryption communication terminal of the embodiment of the invention can be applied to dynamic encryption communication, and can be used for establishing communication by utilizing at least two terminals and enabling all modules in the terminals at two sides to cooperate with each other so as to complete encryption and decryption processes. Specifically, by adopting the multi-light source selection output module, a pulse light wave with one central wavelength or a pulse light wave with a plurality of coupled central wavelengths can be output according to actual needs; by employing the circulator 140, it is possible to transmit pulsed light waves to the outside or receive reflected light waves transmitted from the opposite-side communication terminal 200; by using the optical fiber encoder 150, the transmitted pulse light wave can be encoded and encrypted with data of one or more center wavelengths, and the encrypted light wave transmitted from the opposite communication terminal 200 can be transmitted with corresponding center wavelengths, thereby realizing identifiable unique communication. Meanwhile, the optical fiber encoders 150 can perform temperature modulation to adjust the center wavelength thereof and reflect the encrypted light waves, so that the spectrum processing module of the opposite side communication terminal 200 outputs an electrical signal after processing, and drives the main controller 180 to adjust the plurality of pulse light sources 110, so as to ensure that the optical fiber encoders 150 of the opposite side terminals are uniform corresponding center wavelengths, and therefore, the center wavelengths of the optical fiber encoders 150 of the opposite side terminals can be continuously changed to perform encoding and decoding, thereby realizing dynamic data encryption and decryption.
With continued reference to fig. 1, taking the present side communication terminal 100 as an example, the multiple light source selection output module processes the multiple pulse light sources 110 to selectively output a pulse light wave with one center wavelength, or output a pulse light wave coupled with multiple center wavelengths, and amplify the pulse light wave, and unidirectional outputs light to the optical fiber encoder 150 through the circulator 140, where the optical fiber encoder 150 has multiple bits, so that the pulse light wave with multiple different center wavelengths can be encoded. For the information to be transmitted, data encryption is performed in the form of optical fiber coding, after the information is transmitted to the opposite side communication terminal through the optical fiber 300, the optical fiber coder 150 of the opposite side communication terminal reflects or transmits the received pulse light wave, and the reflected pulse light wave is transmitted back to the spectrum processing module of the communication terminal at the side to be processed, so as to be fed back to the main controller 180 to adjust the output of the multi-light source selection output module; the transmitted pulse light wave is transmitted to a spectrum processing module of the opposite side communication terminal for processing, so as to feed back to a main controller 180 thereof to complete data decoding.
In some embodiments, as shown in fig. 1, the multiple light source selection output module includes a plurality of pulsed light sources 110, a light wave selection unit 120. The pulse light sources 110 are electrically connected to the main controller 180, and the pulse light sources 110 are respectively used for emitting light waves with different center wavelengths; the input end of the optical wave selecting unit 120 is connected to the plurality of pulse light sources 110, the output end is connected to the first port, the optical wave selecting unit 120 is electrically connected to the main controller 180, and the optical wave selecting unit 120 is configured to process the optical waves emitted by the plurality of pulse light sources 110 and output an output optical wave with one central wavelength or output optical waves coupled with a plurality of different central wavelengths.
Referring to fig. 1, both of the output of a pulse light wave of one center wavelength and the output of a pulse light wave coupled with a plurality of center wavelengths are obtained by processing a plurality of pulse light sources 110 by a light wave selecting unit 120. The example in fig. 1 is three pulse light sources 110, and the output ports of the three pulse light sources 110 are respectively connected with the optical waveguide unit. In some other embodiments, more pulsed light sources 110 may be provided, depending on the circumstances.
In some embodiments, as shown in fig. 1, the optical wave selecting unit 120 employs a wavelength division multiplexer, where a plurality of input terminals of the wavelength division multiplexer are respectively connected to the plurality of pulse light sources 110 in a one-to-one correspondence manner, an output terminal of the wavelength division multiplexer is connected to the first port, and the wavelength division multiplexer is electrically connected to the main controller 180.
Referring to fig. 1, a wavelength division multiplexer may combine two or more optical carrier signals carrying various information at different wavelengths and couple the signals into the same optical fiber 300 of an optical line for transmission. Therefore, the wavelength division multiplexer can be used to realize that the optical wave selecting unit 120 outputs the pulse optical wave coupled with a plurality of central wavelengths after processing the plurality of pulse optical sources 110.
In some embodiments, as shown in fig. 1, the optical wave selecting unit 120 employs an optical switch, wherein a plurality of input ends of the optical switch are respectively connected to the plurality of pulse light sources 110 in a one-to-one correspondence manner, and an output end of the optical switch is connected to the first port and the optical switch is electrically connected to the main controller 180.
Referring to fig. 1, the optical switch may be a 1×1 optical switch, that is, may have a function of switching an optical path. Therefore, the optical switch can be used to select a plurality of pulse light sources 110, so that one pulse light wave can be transmitted, and thus, the pulse light wave with one central wavelength can be output.
In some embodiments, as shown in fig. 1, the optical wave selection unit 120 employs an optical splitter, where a plurality of input ends of the optical splitter are respectively connected to the plurality of pulse light sources 110 in a one-to-one correspondence manner, and an output end of the optical splitter is connected to the first port, and the optical splitter is electrically connected to the main controller 180.
Referring to fig. 1, the optical splitter may be m×n, that is, M input ends and N output ends, and the pulse light waves output by the plurality of pulse light sources 110 may enter the optical splitter through the M input ends, and the pulse light waves output by one of the N output ends are selected to be transmitted, so as to achieve the purpose of outputting the pulse light waves with one central wavelength.
In some embodiments, as shown in fig. 1, the multiple light source selection output module further includes a semiconductor optical amplifier 130, an input terminal of the semiconductor optical amplifier 130 is connected to an output terminal of the optical wave selection unit 120, an output terminal of the semiconductor optical amplifier 130 is connected to the first port, and the semiconductor optical amplifier 130 is electrically connected to the main controller 180.
Referring to fig. 1, a semiconductor optical amplifier 130 (SOA) amplifies the pulsed light waves output from the light selection unit. Since the optical fiber encoder 150 in the present side communication terminal 100 reflects the pulse light wave with the specific center wavelength sent by the opposite side communication terminal 200 device, and there is a certain loss, the light emitting intensity of the pulse light source 110 needs to be correspondingly adjusted according to the reflectivity, so that the light intensity of the pulse light wave with the specific center wavelength output by the present side communication terminal 100 device is consistent with the light intensity of other pulse light waves, so as to further ensure that the pulse light wave with the specific center wavelength carrying the data information is hidden.
In some embodiments, as shown in fig. 1, the spectrum processing module includes a spectrum acquisition unit 160, an analog-to-digital conversion unit 170. The input end of the spectrum acquisition unit 160 is connected with the third port, and the spectrum acquisition unit 160 is used for processing the light wave signals and outputting electric signals; the input end of the analog-to-digital conversion unit 170 is electrically connected to the output end of the spectrum acquisition unit 160, and the output end is electrically connected to the main controller 180.
Referring to fig. 1, the spectrum acquisition unit 160 processes the received reflected pulse light wave with a specific center wavelength to output an electrical signal, and transmits the electrical signal to the analog-to-digital conversion unit 170 to complete the process of converting the analog electrical signal into a digital signal, and the digital signal can be transmitted to the main controller 180, so that the main controller 180 adjusts the multiple light source selection output module. For the transmitted pulse light wave with a specific center wavelength, the data decoding is performed by the main controller 180 after the pulse light wave is processed by the spectrum acquisition unit 160. Specifically, the spectrum acquisition unit 160 may implement photoelectric conversion using a PIN photodiode, and may also implement photoelectric conversion using an Avalanche Photodiode (APD).
Referring to fig. 2, a dynamic encryption communication system based on optical fiber coding according to a second embodiment of the present invention includes two dynamic encryption communication terminals according to any one of the embodiments of the first aspect of the present invention and an optical fiber 300, where the optical fiber 300 is connected between output ends of the optical fiber encoders 150 of the two dynamic encryption communication terminals.
For the communication system, both communication parties need to complete information interaction, so that the communication terminal on the side and the communication terminal on the opposite side have functions of sending and receiving messages, and meanwhile, the messages transmitted in the optical fiber 300 are encrypted in the form of optical fiber codes, and the optical fiber codes can be understood as a symmetric encryption technology in the scheme of the embodiment of the invention, so that the communication terminal on the side and the communication terminal on the opposite side must be identical to realize decryption of the information encrypted by the optical fiber codes. The two identical dynamic encryption communication terminals are connected through the optical fiber 300, so that communication between the two terminals can be realized, and particularly, the data information can be transmitted in the form of optical fiber codes by utilizing each module in the two terminals, so that identifiable unique communication can be realized. Meanwhile, the optical fiber encoder 150 can perform temperature modulation to adjust the center wavelength thereof and reflect the encrypted light wave, and the center wavelength of the terminal optical fiber encoder 150 at both sides is continuously changed to perform encoding and decoding, thereby realizing dynamic data encryption and decryption.
Referring to fig. 4, a flowchart of a dynamic encryption communication method based on optical fiber coding according to a third embodiment of the present invention is shown, where the dynamic encryption communication method based on optical fiber coding is applied to a local side communication terminal 100, the local side communication terminal 100 is connected to a contralateral side communication terminal 200 through an optical fiber 300, and the local side communication terminal 100 and the contralateral side communication terminal 200 are both dynamic encryption communication terminals according to any one of the embodiments of the first embodiment of the present invention; the dynamic encryption communication method based on the optical fiber coding comprises the following steps:
the multi-light source selection output module outputs an output light wave with one central wavelength or a plurality of coupled output light waves with different central wavelengths;
transmitting the output light waves to the optical fiber encoder 150 through the circulator 140, and data-encoding corresponding wavelength light waves in the output light waves according to one or more center wavelengths of the optical fiber encoder 150 to output encrypted light waves;
transmitting the encrypted light wave to the opposite side communication terminal 200 through the optical fiber 300 to complete data decoding;
the reflected light wave transmitted from the opposite side communication terminal 200 is received, and is transmitted to the spectrum processing module through the circulator 140, and then is processed, and an electrical signal is output to the main controller 180, so as to adjust the plurality of pulse light sources 110, where the reflected light wave represents a light wave reflected by the encrypted light wave after the center wavelength of the optical fiber encoder 150 of the opposite side communication terminal 200 is adjusted.
The dynamic encryption communication method of the embodiment of the invention can be applied to the dynamic encryption communication terminal and the system of the embodiment of the invention. Specifically, in the present side communication terminal 100, after the multiple pulse light waves are processed by the multiple light source selection output module, a pulse light wave with one center wavelength or a pulse light wave with multiple coupled center wavelengths may be output, the optical fiber encoder 150 performs data encoding with one or more center wavelengths, outputs an encrypted light wave, and pulse light waves with other wavelengths may be used as interference light waves. The optical fiber encoder 150 of the opposite side communication terminal 200 transmits the received encrypted light wave, and the data decoding is completed by the main controller 180 after the pulse light wave with a specific center wavelength carrying data information is processed by the spectrum processing module, so that the communication between the communication terminals is realized. By performing optical fiber coding on pulse light waves with a certain or a plurality of central wavelengths, data encryption is realized, and pulse light waves with other wavelengths are used as interference, so that the data can be hidden when the optical fiber 300 is transmitted, and encrypted communication is realized. Meanwhile, the optical fiber encoder 150 can complete the reflection of the encrypted optical wave, so that after the central wavelength of the optical fiber encoder 150 is adjusted, the central wavelength is fed back to the optical fiber encoder 150 of the opposite-side communication terminal 200 to adjust the corresponding central wavelength, and thus dynamic encryption and decryption are realized by continuously changing the central wavelengths of the optical fiber encoders 150 of the opposite-side terminals.
In some embodiments, the dynamic encryption communication method based on optical fiber coding further comprises the following steps:
receiving and transmitting the second encrypted light wave to the optical fiber encoder 150 of the optical communication terminal to obtain a second transmitted light wave, wherein the second encrypted light wave is obtained by encoding by the optical fiber encoder 150 of the opposite side communication terminal 200;
the second transmitted light wave is processed by the spectrum processing module and then transmitted to the main controller 180 for data decoding;
after passing through the optical fiber encoder 150 and the circulator 140, the first reflected light wave is processed by the spectrum processing module and outputs a control signal to the main controller 180, so as to adjust the plurality of pulse light sources 110.
Referring to fig. 4 to 8, fig. 5 shows a schematic spectrum of an output light wave of the multi-light source selective output module, when the output light wave is transmitted to the optical fiber encoder 150, the "convex" light intensity in fig. 5 will disappear after encoding, i.e. an encrypted light wave spectrum of fig. 6 is obtained, at this time, the encrypted light wave will be transmitted in the optical fiber 300, and when transmitted to the optical fiber encoder 150 of the opposite communication terminal 200 device, a "leak point" will appear in the spectrum, i.e. as shown in fig. 8. The opposite side communication terminal 200 can analyze the transmitted data information by using the "missing point" wavelength as the identification point and combining the pulse information.
With continued reference to FIG. 7, FIG. 7 is a schematic spectrum of the reflected light wave, which represents a specific center wavelength of the optical fiber encoder 150, i.e., the wavelength corresponding to the "convex" light intensity in FIG. 5. The optical fiber encoder 150 of the opposite side communication terminal 200 may also reflect the pulse optical wave with the specific center wavelength to feed back to the present side communication terminal 100, adjust the specific center wavelength by modulating the temperature of the optical fiber encoder in the opposite side communication terminal 200, and output an electrical signal after processing the signal by the spectrum processing module of the opposite side communication terminal 100, so as to drive the main controller 180 to adjust the plurality of pulse light sources 110, thereby conforming to the adjusted center wavelength, so that the center wavelength for data encryption transmission between the communication terminals can be continuously changed, and dynamic data encoding encryption is implemented.
In some embodiments, the temperature of the fiber encoder 150 is modulated to increase by 0.01 nanometers for each 1 degree of heating.
Referring to fig. 3, it can be seen that the optical fiber encoder 150 has a plurality of bits, i.e., optical fibers can be encoded for a plurality of center wavelengths, and the optical fiber encoder 150 is subjected to temperature modulation of 0.01 nm/degree, and a designated temperature is set to be hot by using the TEC, thereby controlling the center wavelength variation of the optical fiber encoder 150. Meanwhile, when the specific center wavelength of the optical fiber encoder 150 is changed, an optical wave pulse may be transmitted to the main controller 180 of the terminal device, so that the main controller 180 adjusts the multiple light source selection output module. Specifically, two mechanisms may be combined in practice: the schematic light wave pulse is sent to the main controller 180, or the reflected light wave is sent to the main controller 180 after being processed by the spectrum collecting unit, so as to ensure that the operation of the system is relatively more stable.
In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.
Those of ordinary skill in the art will appreciate that all or some of the steps, systems, and methods disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). The term computer storage media includes both volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, as known to those skilled in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can be accessed by a computer. Furthermore, as is well known to those of ordinary skill in the art, communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present invention.
Claims (7)
1. A dynamic encryption communication system based on fiber optic coding, comprising:
two dynamic encryption communication terminals;
the optical fiber is connected between the output ends of the optical fiber encoders of the two dynamic encryption communication terminals;
the dynamic encryption communication terminal includes:
the multi-light source selection output module is used for outputting an output light wave with one central wavelength or a plurality of coupled output light waves with different central wavelengths;
the circulator comprises a first port, a second port and a third port, wherein the first port is connected with the output end of the multi-light source selection output module;
the input end of the optical fiber encoder is connected with the second port, and the output end of the optical fiber encoder is used for being connected with an external optical fiber; the optical fiber encoder is used for adjusting the central wavelength of the output light wave for a plurality of times through temperature modulation so as to realize dynamic encoding or dynamic decoding;
the input end of the spectrum processing module is connected with the third port;
the main controller is respectively and electrically connected with the multi-light source selection output module, the optical fiber encoder and the spectrum processing module;
the dynamic encryption communication terminal is used for executing a dynamic encryption communication method based on optical fiber coding, and the method comprises the following steps:
generating an output light wave with one central wavelength or a plurality of coupled output light waves with different central wavelengths by a multi-light source selection output module;
transmitting the output light wave to an optical fiber encoder through a circulator, and encoding the output light wave according to one or more center wavelengths of the optical fiber encoder to output a first encrypted light wave;
transmitting the first encrypted light wave to a contralateral communication terminal through an optical fiber, wherein the contralateral communication terminal transmits the first encrypted light wave to an optical fiber encoder of the contralateral communication terminal for transmission so as to obtain a first transmitted light wave;
receiving a first reflected light wave reflected by an optical fiber encoder of the opposite-side communication terminal;
receiving a second encrypted light wave and transmitting the second encrypted light wave to an optical fiber encoder of the second encrypted light wave for transmission so as to obtain a second transmitted light wave, wherein the second encrypted light wave is obtained by encoding the optical fiber encoder of the opposite-side communication terminal;
the second transmitted light wave is transmitted to a main controller for data decoding after being processed by a spectrum processing module;
and after passing through the optical fiber encoder and the circulator of the first reflected light wave, the spectrum processing module processes and outputs control signals to the main controller so as to adjust a plurality of pulse light sources.
2. The fiber optic code based dynamic encryption communication system according to claim 1, wherein the multiple light source selection output module comprises:
the pulse light sources are electrically connected with the main controller and are respectively used for emitting light waves with different center wavelengths;
the input end of the light wave selection unit is respectively connected with the pulse light sources, the output end of the light wave selection unit is connected with the first port, the light wave selection unit is electrically connected with the main controller, and the light wave selection unit is used for processing light waves emitted by the pulse light sources and then outputting output light waves with one central wavelength or output light waves with different central wavelengths after coupling.
3. The dynamic encryption communication system based on optical fiber coding according to claim 2, wherein the optical wave selection unit adopts a wavelength division multiplexer, a plurality of input ends of the wavelength division multiplexer are respectively connected with a plurality of pulse light sources in a one-to-one correspondence manner, an output end of the wavelength division multiplexer is connected with the first port, and the wavelength division multiplexer is electrically connected with the main controller.
4. The dynamic encryption communication system based on optical fiber coding according to claim 2, wherein the optical wave selection unit adopts an optical switch, a plurality of input ends of the optical switch are respectively connected with a plurality of pulse light sources in a one-to-one correspondence manner, an output end of the optical switch is connected with the first port, and the optical switch is electrically connected with the main controller.
5. The dynamic encryption communication system based on optical fiber coding according to claim 2, wherein the optical wave selection unit adopts an optical splitter, a plurality of input ends of the optical splitter are respectively connected with a plurality of pulse light sources in a one-to-one correspondence manner, an output end of the optical splitter is connected with the first port, and the optical splitter is electrically connected with the main controller.
6. The optical fiber code based dynamic encryption communication system according to claim 2, wherein the multi-light source selection output module further comprises a semiconductor optical amplifier, an input end of the semiconductor optical amplifier is connected to an output end of the optical wave selection unit, an output end of the semiconductor optical amplifier is connected to the first port, and the semiconductor optical amplifier is electrically connected to the main controller.
7. The fiber optic code based dynamic encryption communication system according to claim 1, wherein the spectral processing module comprises:
the input end of the spectrum acquisition unit is connected with the third port, and the spectrum acquisition unit is used for outputting an electric signal after processing an optical wave signal;
and the input end of the analog-to-digital conversion unit is electrically connected with the output end of the spectrum acquisition unit, and the output end of the analog-to-digital conversion unit is electrically connected with the main controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210661929.3A CN115225157B (en) | 2022-06-13 | 2022-06-13 | Dynamic encryption communication terminal, system and method based on optical fiber coding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210661929.3A CN115225157B (en) | 2022-06-13 | 2022-06-13 | Dynamic encryption communication terminal, system and method based on optical fiber coding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115225157A CN115225157A (en) | 2022-10-21 |
| CN115225157B true CN115225157B (en) | 2023-10-03 |
Family
ID=83607655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210661929.3A Active CN115225157B (en) | 2022-06-13 | 2022-06-13 | Dynamic encryption communication terminal, system and method based on optical fiber coding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115225157B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0930679A2 (en) * | 1998-01-14 | 1999-07-21 | Hewlett-Packard Company | Wavelength selectable source for wavelength division multiplexed applications |
| CN101483492A (en) * | 2008-01-08 | 2009-07-15 | 冲电气工业株式会社 | Optical code division multiplexing module and method |
| CN108833001A (en) * | 2018-04-18 | 2018-11-16 | 中山水木光华电子信息科技有限公司 | A kind of optical fiber code identifying system based on tunable optical source |
| CN109560866A (en) * | 2018-12-28 | 2019-04-02 | 东南大学 | Passive optical network link monitoring system and method based on tunable laser |
| CN112702115A (en) * | 2021-01-05 | 2021-04-23 | 中山水木光华电子信息科技有限公司 | Optical fiber coding identification system and method for temperature modulation multi-spectral matrix |
| CN112713930A (en) * | 2021-01-05 | 2021-04-27 | 中山水木光华电子信息科技有限公司 | Multi-wavelength synchronous output optical fiber code identification system and method |
| CN114124207A (en) * | 2021-11-29 | 2022-03-01 | 中山水木光华电子信息科技有限公司 | All-optical storage system and method based on optical fiber coding |
| CN114111909A (en) * | 2021-11-30 | 2022-03-01 | 上海大学 | Fiber Bragg grating temperature and stress dual-parameter integrated sensing and demodulating system based on diffraction grating |
| CN114285473A (en) * | 2021-11-24 | 2022-04-05 | 北京邮电大学 | Bidirectional optical amplification device, system and method |
-
2022
- 2022-06-13 CN CN202210661929.3A patent/CN115225157B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0930679A2 (en) * | 1998-01-14 | 1999-07-21 | Hewlett-Packard Company | Wavelength selectable source for wavelength division multiplexed applications |
| CN101483492A (en) * | 2008-01-08 | 2009-07-15 | 冲电气工业株式会社 | Optical code division multiplexing module and method |
| CN108833001A (en) * | 2018-04-18 | 2018-11-16 | 中山水木光华电子信息科技有限公司 | A kind of optical fiber code identifying system based on tunable optical source |
| CN109560866A (en) * | 2018-12-28 | 2019-04-02 | 东南大学 | Passive optical network link monitoring system and method based on tunable laser |
| CN112702115A (en) * | 2021-01-05 | 2021-04-23 | 中山水木光华电子信息科技有限公司 | Optical fiber coding identification system and method for temperature modulation multi-spectral matrix |
| CN112713930A (en) * | 2021-01-05 | 2021-04-27 | 中山水木光华电子信息科技有限公司 | Multi-wavelength synchronous output optical fiber code identification system and method |
| CN114285473A (en) * | 2021-11-24 | 2022-04-05 | 北京邮电大学 | Bidirectional optical amplification device, system and method |
| CN114124207A (en) * | 2021-11-29 | 2022-03-01 | 中山水木光华电子信息科技有限公司 | All-optical storage system and method based on optical fiber coding |
| CN114111909A (en) * | 2021-11-30 | 2022-03-01 | 上海大学 | Fiber Bragg grating temperature and stress dual-parameter integrated sensing and demodulating system based on diffraction grating |
Non-Patent Citations (1)
| Title |
|---|
| 全光链路智能识别与故障定位技术;张晔;巫健;薛鹏;侯继勇;;粘接(03);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115225157A (en) | 2022-10-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7062177B1 (en) | Out of band communications link for 4-lane optical modules using dark fibers and low-bandwidth LEDs | |
| CA2295390C (en) | Methods of and apparatus for optical signal transmission | |
| KR101031978B1 (en) | Method and system for quantum key distribution over multi-user wdm network with wavelength routing | |
| CN109743114B (en) | Bidirectional multipath chaotic laser communication system and communication method | |
| JP2008524929A (en) | System and method for optically powering remote network components | |
| CN110620655B (en) | Polarization multiplexing bidirectional quantum key distribution method and system | |
| CN210839583U (en) | Time phase encoding device, quantum key transmitter and quantum key distribution system | |
| CN110190905A (en) | A kind of time phase quantum key distribution system transmitting terminal | |
| CN209517162U (en) | A kind of palarization multiplexing two-way quantum key dissemination system | |
| CN206542410U (en) | Light Transmit-Receive Unit, optical module and optical communication system | |
| CN106961308B (en) | Optical transceiver unit, optical module, optical communication system and related parameter control method | |
| CN103199937B (en) | Light emitting and receiving device with high flexibility and achieving method thereof | |
| CN115225157B (en) | Dynamic encryption communication terminal, system and method based on optical fiber coding | |
| CN104270201A (en) | Two-channel compact type high-speed SFP optical module, system and signal processing method of system | |
| WO2020211950A1 (en) | Efficient quantum-key-secured passive optical point to multipoint network | |
| Yadin et al. | Parallel optical interconnects over multimode waveguides | |
| KR100488415B1 (en) | Optical spectral domain CDMA transmitting apparatus and method with bipolar capacity | |
| CN110149208B (en) | Transmitting end coding module of integrated time phase coding quantum key distribution system | |
| CN210137334U (en) | Quantum key transmitter based on time phase coding and quantum key distribution system | |
| CN111969404B (en) | Method and device for preparing decoy state without intensity modulator | |
| CN114499675B (en) | Wireless optical communication system | |
| CN112887033B (en) | CV-QKD system and quantum key distribution method | |
| CN221263809U (en) | Optical communication circuit and optical transceiver | |
| CN216057016U (en) | Differential cross-check modulation device in free space optical communication | |
| CN212660172U (en) | Integrated multi-channel credible relay device and system for quantum secret communication |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |