CN113938202A - Optical fiber communication method and optical fiber communication system - Google Patents
Optical fiber communication method and optical fiber communication system Download PDFInfo
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- CN113938202A CN113938202A CN202111145845.6A CN202111145845A CN113938202A CN 113938202 A CN113938202 A CN 113938202A CN 202111145845 A CN202111145845 A CN 202111145845A CN 113938202 A CN113938202 A CN 113938202A
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- H—ELECTRICITY
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- 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
Abstract
The application is applicable to the technical field of communication, and provides an optical fiber communication method and an optical fiber communication system, wherein the optical fiber communication method comprises the following steps: the first repeater receives a first low-frequency optical signal sent by first equipment, converts the first low-frequency optical signal into a first high-frequency optical signal and sends the first high-frequency optical signal to the second repeater; the second repeater converts the first high frequency optical signal to a second low frequency optical signal and transmits the second low frequency optical signal to the second device. The optical fiber communication method can be used for long-distance optical fiber communication, and the application range of the optical fiber communication is expanded.
Description
Technical Field
The present application belongs to the field of communications technologies, and in particular, to an optical fiber communication method and an optical fiber communication system.
Background
Optical fiber communication is a communication mode in which light waves are used as information carriers and optical fibers are used as transmission media. The optical fiber communication has the advantages of strong anti-interference capability, high transmission rate and the like, so that the optical fiber communication is widely applied to industrial control, such as master-slave control of a frequency converter. The master-slave control of the frequency converters means that when a plurality of frequency converters are used, external signals (including starting, stopping, given signals and the like) are only connected with the master frequency converter, and the master frequency converter broadcasts control signals to all slave frequency converters based on optical fiber communication to realize the control of the slave frequency converters.
However, in the prior art, when the frequency converter master-slave control is carried out through the optical fiber communication, the short-distance optical fiber communication is generally adopted, that is, the prior art has the problems that the long-distance optical fiber communication cannot be carried out and the application range is small.
Disclosure of Invention
The embodiment of the application provides an optical fiber communication method and an optical fiber communication system, and can solve the problems that long-distance optical fiber communication cannot be performed and the application range is small in the prior art.
In a first aspect, an embodiment of the present application provides an optical fiber communication method, including:
the method comprises the steps that a first repeater receives a first low-frequency optical signal sent by first equipment, converts the first low-frequency optical signal into a first high-frequency optical signal and sends the first high-frequency optical signal to a second repeater;
and the second repeater receives the first high-frequency optical signal, converts the first high-frequency optical signal into a second low-frequency optical signal, and sends the second low-frequency optical signal to second equipment.
Optionally, the receiving, by the first repeater, the first low-frequency optical signal sent by the first device, converting the first low-frequency optical signal into a first high-frequency optical signal, and sending the first high-frequency optical signal to the second repeater, includes:
the first repeater converts the first low-frequency optical signal into a first low-frequency pulse signal;
the first repeater converts the first low-frequency pulse signal into a first high-frequency pulse signal through a first programmable logic device;
the first repeater converts the first high-frequency pulse signal into the first high-frequency optical signal and transmits the first high-frequency optical signal to the second repeater.
Optionally, the first repeater converts the first low-frequency pulse signal into a first high-frequency pulse signal through a first programmable logic device, and includes:
converting the first low-frequency pulse signal into the first high-frequency pulse signal based on a first preset rule; the first preset rule refers to that a first preset number of pulse signals with pulse duty ratios larger than a first preset value are generated to represent each high-level signal in the first low-frequency pulse signals, and a second preset number of pulse signals with pulse duty ratios smaller than a second preset value are generated to represent each low-level signal in the first low-frequency pulse signals; the first preset value is greater than the second preset value.
Optionally, the second repeater converts the first high-frequency optical signal into a second low-frequency optical signal, and sends the second low-frequency optical signal to a second device, where the method includes:
the second repeater converts the first high-frequency optical signal into a second high-frequency pulse signal;
the second repeater converts the second high-frequency pulse signal into a second low-frequency pulse signal through a second programmable logic device;
and the second repeater converts the second low-frequency pulse signal into the second low-frequency optical signal and sends the second low-frequency optical signal to the second equipment.
Optionally, the second repeater converts the second high-frequency pulse signal into a second low-frequency pulse signal through a second programmable logic device, and includes:
converting the second high-frequency pulse signal into the second low-frequency pulse signal based on a second preset rule; the second preset rule means that each high level signal of the second low-frequency pulse signals is composed of a first preset number of pulse signals of which the pulse duty ratios are larger than a first preset value, and each low level signal of the second low-frequency pulse signals is composed of a second preset number of pulse signals of which the pulse duty ratios are smaller than a second preset value; the first preset value is greater than the second preset value.
Optionally, the frequency of the first high-frequency pulse signal is greater than the frequency of the first low-frequency optical signal by a first preset multiple, and the frequency of the first high-frequency pulse signal is greater than the frequency of the first high-frequency optical signal.
In a second aspect, an embodiment of the present application provides an optical fiber communication system, including a first device, a first repeater connected to the first device, a second device, and a second repeater connected to the second device, where the first repeater and the second repeater are connected by an optical fiber;
the first device is used for sending a first low-frequency optical signal to the first repeater;
the first repeater is used for receiving the first low-frequency optical signal, converting the first low-frequency optical signal into a first high-frequency optical signal and sending the first high-frequency optical signal to the second repeater;
the second repeater is used for receiving the first high-frequency optical signal, converting the first high-frequency optical signal into a second low-frequency optical signal and sending the second low-frequency optical signal to the second device;
the second device is configured to receive the second low frequency optical signal.
Compared with the prior art, the embodiment of the application has the advantages that:
according to the optical fiber communication method provided by the embodiment of the application, a first low-frequency optical signal received by a first repeater and sent by first equipment is converted into a first high-frequency optical signal, so that the first low-frequency optical signal suitable for a short distance is converted into a first high-frequency optical signal suitable for a long distance, and the first high-frequency optical signal is sent to a second repeater; the second repeater converts the first high-frequency optical signal into a second low-frequency optical signal and sends the second low-frequency optical signal to the second device, so that the second device in a long distance can receive the low-frequency optical signal through the two repeaters, that is, the optical fiber communication method can perform long-distance optical fiber communication, and the application range of the optical fiber communication is expanded.
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In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an optical fiber communication system according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of a repeater according to an embodiment of the present application;
fig. 3 is a flowchart illustrating an implementation of a fiber optic communication method according to an embodiment of the present application;
fig. 4 is a flowchart illustrating an implementation of S101 in an optical fiber communication method according to an embodiment of the present application;
FIG. 5 is a diagram illustrating the conversion effect between the low frequency pulse signal and the high frequency pulse signal according to an embodiment of the present application;
fig. 6 is a flowchart illustrating an implementation of S102 in the optical fiber communication method according to an embodiment of the present disclosure;
fig. 7 is a schematic structural diagram of an optical fiber communication device according to an embodiment of the present application;
fig. 8 is a schematic structural diagram of a relay module according to an embodiment of the present application.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It should also be understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.
As used in this specification and the appended claims, the term "if" may be interpreted contextually as "when", "upon" or "in response to" determining "or" in response to detecting ". Similarly, the phrase "if it is determined" or "if a [ described condition or event ] is detected" may be interpreted contextually to mean "upon determining" or "in response to determining" or "upon detecting [ described condition or event ]" or "in response to detecting [ described condition or event ]".
Furthermore, in the description of the present application and the appended claims, the terms "first," "second," "third," and the like are used for distinguishing between descriptions and not necessarily for describing or implying relative importance.
Reference throughout this specification to "one embodiment" or "some embodiments," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the present application. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," or the like, in various places throughout this specification are not necessarily all referring to the same embodiment, but rather "one or more but not all embodiments" unless specifically stated otherwise. The terms "comprising," "including," "having," and variations thereof mean "including, but not limited to," unless expressly specified otherwise.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an optical fiber communication system according to an embodiment of the present application. As shown in fig. 1, an optical fiber communication system provided in an embodiment of the present application includes: a first device 10, a relay module 20 and a second device 30. The relay module 20 is communicatively connected to the first device 10 and the second device 30, respectively. In the present embodiment, the first device 10 and the second device 30 are both devices having optical fiber communication capability.
All the following embodiments will be described by taking as an example a wired communication method in which the relay module 20 communicates with both the first device 10 and the second device 30 via optical fibers.
The first device 10 and the second device 30 may each be a power control device, such as a frequency converter. Illustratively, the first device 10 may be a master frequency converter, and the second device 30 may be a slave frequency converter, so that the master frequency converter may implement long-distance optical fiber communication through the relay module 20, and further transmit the optical signal to the slave frequency converter located at a preset distance from the first device 10. Wherein the preset range is set to be greater than 2 kilometers and less than or equal to 10 kilometers.
It should be noted that, in all embodiments of the present application, when the distance between the first device 10 and the second device 30 is a short distance, that is, the distance between the first device 10 and the second device 30 is less than or equal to 2 kilometers, the first device 10 and the second device 30 can directly communicate by using their own optical fiber communication capability. When the distance between the first device 10 and the second device 30 is long, that is, the distance between the first device 10 and the second device 30 is greater than 2 kilometers and less than or equal to 10 kilometers, the first device 10 and the second device 30 respectively perform short-range optical fiber communication with the relay module 20, and the relay module performs long-range optical fiber communication, thereby implementing long-range optical fiber communication of the first device 10 and the second device 30. It can be seen that the present embodiment enables two devices, which themselves have only short-range fiber optic communication capability, to perform long-range fiber optic communication.
Continuing to refer to fig. 1, in one embodiment of the present application, the relay module 20 includes a first relay 21 and a second relay 22. The first repeater 21 is connected to the first device 10 by an optical fiber, the first repeater 21 is connected to the second repeater 22 by an optical fiber, and the second repeater 22 is connected to the second device 30 by an optical fiber.
Based on this, the first device 10 is configured to send a first low frequency optical signal to said first repeater 21;
the first repeater 21 is configured to receive the first low-frequency optical signal, convert the first low-frequency optical signal into a first high-frequency optical signal, and send the first high-frequency optical signal to the second repeater 22;
the second repeater 22 is configured to receive the first high-frequency optical signal, convert the first high-frequency optical signal into a second low-frequency optical signal, and send the second low-frequency optical signal to the second device 30;
the second device 30 is arranged to receive said second low frequency optical signal.
Specifically, the first repeater 21 may be connected to the first device 30 through a low frequency optical signal interface of the first device 10, and the second repeater 22 may be connected to the second device 30 through a low frequency optical signal interface of the second device 30.
In the present embodiment, the first device 10 communicates with the first repeater 21 using its own optical fiber communication capability, the second device 30 communicates with the second repeater 22 using its own optical fiber communication capability, and the first repeater 21 and the second repeater 22 perform long-distance optical fiber communication. It can be seen that, in the present embodiment, the fiber optic modules of the first device 10 and the second device 30 do not need to be modified or upgraded, and the first device 10 and the second device 30 having only the short-distance fiber optic communication capability can perform long-distance fiber optic communication, so that the fiber optic communication capabilities of the first device 10 and the second device 30 are expanded at a lower cost. In a specific application scenario, if two master and slave devices only having short-distance communication capability need to be placed remotely due to temporary construction requirements, by using the method provided by the embodiment, remote communication can be realized by additionally arranging the first repeater and the second repeater between the master and slave devices without upgrading and reconstructing the master and slave devices from a technical staff to the field, and the first repeater and the second repeater can be directly recycled after the temporary requirements are met or the distance between the master and slave devices is adjusted to be a short distance.
Referring to fig. 2, fig. 2 is a schematic structural diagram of repeaters (a first repeater 21 and a second repeater 22) according to an embodiment of the present application. As shown in fig. 2 (a), the first repeater 21 includes a low frequency input terminal 211, a photoelectric conversion circuit 212, a first Programmable Logic Device (PLD) 213, an electro-optical conversion circuit 214, and a high frequency output terminal 215.
In the embodiments of the present application, the low frequency is used to describe a frequency less than or equal to 5MHZ, and the high frequency is used to describe a frequency greater than or equal to 20 MHZ.
The low frequency input end 211 is connected to the first device 10, and configured to receive the first low frequency optical signal sent by the first device 10.
The photoelectric conversion circuit 212 is connected to the low-frequency input end 211, and configured to convert the first low-frequency optical signal into a first low-frequency pulse signal.
The first programmable logic device 213 is connected to the photoelectric conversion circuit 212, and configured to convert the first low-frequency pulse signal into a first high-frequency pulse signal.
In practical applications, the first Programmable logic device 213 may be a Field Programmable Gate Array (FGPA).
The electro-optical conversion circuit 214 is connected to the first programmable logic device 213, and configured to convert the first high-frequency pulse signal into a first high-frequency optical signal.
The high-frequency output terminal 215 is connected to the electro-optical conversion circuit 214, and is configured to transmit the first high-frequency optical signal to the second repeater 22.
In another embodiment of the present application, the first repeater may further include a low frequency output and a high frequency input (not shown in the figures).
Referring to fig. 2, as shown in (b) of fig. 2, the second repeater 22 includes a high frequency input 221, a photoelectric conversion circuit 222, a second programmable logic device 223, an electro-optical conversion circuit 224, and a low frequency output 225.
The high-frequency input port 221 is connected to the first repeater 21, and is configured to receive the first high-frequency optical signal transmitted by the first repeater 21.
The photoelectric conversion circuit 222 is connected to the high-frequency input terminal 221, and configured to convert the first high-frequency optical signal into a second high-frequency pulse signal.
The second programmable logic device 223 is connected to the photoelectric conversion circuit 222, and configured to convert the second high-frequency pulse signal into a second low-frequency pulse signal.
The second programmable logic device 223 and the first programmable logic device 213 may be the same or different.
The electro-optical conversion circuit 224 is connected to the second programmable logic device 223 and configured to convert the second low-frequency pulse signal into a second low-frequency optical signal.
The low-frequency output terminal 225 is connected to the electrical-to-optical conversion circuit 224, and is configured to transmit the second low-frequency optical signal to the second device 30.
In yet another embodiment of the present application, the second repeater may further include a low frequency input and a high frequency output (not shown in the figures).
Referring to fig. 3, fig. 3 is a flowchart illustrating an implementation of an optical fiber communication method according to an embodiment of the present application. As shown in fig. 3, the optical fiber communication method provided in an embodiment of the present application may include S101 to S102, which are detailed as follows:
in S101, a first repeater receives a first low frequency optical signal transmitted by a first device, converts the first low frequency optical signal into a first high frequency optical signal, and transmits the first high frequency optical signal to a second repeater.
In the embodiment of the present application, the low frequency optical signal refers to an optical signal with a frequency less than 5MHZ, and the high frequency optical signal refers to an optical signal with a frequency greater than 20 MHZ.
In this embodiment of the application, when the first device needs to send a signal to the second device that is far away, the first device may send the first low-frequency optical signal to the first repeater.
After receiving the first low-frequency optical signal sent by the first device, the first repeater may modulate the first low-frequency optical signal to obtain a first high-frequency optical signal suitable for a preset distance.
In an embodiment of the present application, S101 may be specifically implemented by steps S1011 to S1013 shown in fig. 4, which are detailed as follows:
in S1011, the first repeater converts the first low frequency optical signal into a first low frequency pulse signal.
In this embodiment, the first repeater may convert the first low-frequency optical signal into the first low-frequency pulse signal through the photoelectric conversion circuit.
In S1012, the first repeater converts the first low frequency pulse signal into a first high frequency pulse signal through a first programmable logic device.
In this embodiment, after obtaining the first low-frequency pulse signal, the first repeater may convert the first low-frequency pulse signal into a first high-frequency pulse signal through the first programmable logic device.
The low-frequency pulse signal refers to a pulse signal with a frequency less than 5MHZ, and the high-frequency pulse signal refers to a pulse signal with a frequency greater than 20 MHZ.
In an embodiment of the present application, in order to ensure that the first low-frequency optical signal can reduce the pulse width loss after being modulated by the first repeater and demodulated by the second repeater, and improve the recovery of the first low-frequency optical signal (i.e., reduce the influence of noise and the like on the signal) during demodulation, the frequency of the first high-frequency pulse signal needs to be greater than the frequency of the first low-frequency optical signal by a first preset multiple, and meanwhile, the frequency of the first high-frequency pulse signal needs to be smaller than the clock frequency of the first programmable logic device. The first preset multiple may be set according to actual needs, and is not limited herein.
It should be noted that the first preset multiple and the pulse width loss value are in an inverse proportional relationship, that is, the larger the first preset multiple is, the lower the pulse width loss value of the first low-frequency optical signal in the transmission process is, and thus the reduction degree of the first low-frequency optical signal after being adjusted by the first repeater and demodulated by the second repeater is also higher.
In this embodiment, the first repeater may determine the pulse width loss value from the first high frequency pulse signal. The pulse width loss value is inversely proportional to the frequency of the first rf pulse signal, i.e., the pulse width loss value decreases as the frequency of the first rf pulse signal increases.
In an implementation manner of this embodiment, the first repeater may specifically calculate the pulse width loss value according to the following formula:
TLoss＝1/fH；
wherein, TLossRepresenting the value of the pulse width loss, fHRepresenting a first high frequency pulse signal.
In another embodiment of the present application, the first repeater may convert the first low frequency pulse signal into the first high frequency pulse signal based on a first preset rule when converting the first low frequency pulse signal through the first programmable logic device.
In this embodiment, the first preset rule may be: and generating a first preset number of pulse signals with pulse duty ratios larger than a first preset value to represent each high-level signal in the first low-frequency pulse signals, and generating a second preset number of pulse signals with pulse duty ratios smaller than a second preset value to represent each low-level signal in the first low-frequency pulse signals. The first preset number and the second preset number may be determined according to actual needs, and are not limited herein.
In practical applications, the pulse duty cycle is used to describe the proportion of the high level in one pulse period.
It should be noted that the first preset value is greater than the second preset value.
In one implementation of this embodiment, the first preset value may be a second preset value that is a second preset multiple, in order to clearly distinguish between a high level and a low level in the first high-frequency pulse signal and ensure that the first repeater can detect any pulse width in the first high-frequency pulse signal. The value range of the second preset multiple can be set as [2,4 ]. Illustratively, the first predetermined value may be 70% and the second predetermined value may be 30%.
Referring to fig. 5, fig. 5 is a diagram of a conversion relationship between a low frequency pulse signal and a high frequency pulse signal, where T represents a pulse period in the high frequency pulse signal.
In S1013, the first repeater converts the first high-frequency pulse signal into the first high-frequency optical signal and transmits the first high-frequency optical signal to the second repeater.
In this embodiment, after obtaining the first high-frequency pulse, the first repeater may convert the first high-frequency pulse signal into a first high-frequency optical signal through an electro-optical conversion circuit, and transmit the first high-frequency optical signal to the second repeater through an optical fiber.
In S102, the second repeater converts the first high-frequency optical signal into a second low-frequency optical signal, and sends the second low-frequency optical signal to a second device.
In this embodiment of the application, after receiving the first high-frequency optical signal sent by the first repeater, the second repeater may demodulate the first high-frequency optical signal to obtain a second low-frequency optical signal.
In an embodiment of the present application, S102 may be specifically implemented by steps S1021 to S1023 as shown in fig. 6, which are detailed as follows:
in S1021, the second repeater converts the first high frequency optical signal into a second high frequency pulse signal.
In this embodiment, the second repeater may convert the second high-frequency optical signal into the second high-frequency pulse signal by the photoelectric conversion circuit.
In S1022, the second repeater converts the second high frequency pulse signal into a second low frequency pulse signal through a second programmable logic device.
In this embodiment, after obtaining the second high-frequency pulse signal, the first repeater may convert the second high-frequency pulse signal into a second low-frequency pulse signal through the second programmable logic device.
In an embodiment of the present application, in order to ensure that the demodulated second low-frequency optical signal is the same as the first low-frequency optical signal after the second high-frequency optical signal is demodulated by the second repeater, the frequency of the second low-frequency pulse signal needs to be smaller than the frequency of the second high-frequency optical signal by the first preset multiple, and meanwhile, the frequency of the second high-frequency pulse signal needs to be smaller than the clock frequency of the second programmable logic device.
In another embodiment of the present application, the second repeater may convert the second high frequency pulse signal into the second low frequency pulse signal based on a second preset rule when converting the second high frequency pulse signal through the second programmable logic device.
In this embodiment, the second preset rule may be: each high-level signal of the second low-frequency pulse signals is composed of pulse signals of which the pulse duty ratios are larger than a first preset value and a first preset number, and each low-level signal of the second low-frequency pulse signals is composed of pulse signals of which the pulse duty ratios are smaller than a second preset value and a second preset number. The first preset number and the second preset number may be determined according to actual needs, and are not limited herein.
In practical applications, the pulse duty cycle is used to describe the proportion of the high level in one pulse period.
It should be noted that the first preset value is greater than the second preset value.
In one implementation manner of this embodiment, the first preset value may be a second preset value of a second preset multiple, in order to clearly distinguish between a high level and a low level in the second high-frequency pulse signal and ensure that the second repeater can detect any pulse width in the second high-frequency pulse signal. The value range of the second preset multiple can be set as [2,4 ]. Illustratively, the first predetermined value may be 70% and the second predetermined value may be 30%.
Referring to fig. 5, fig. 5 is a graph illustrating a conversion relationship between the low frequency pulse signal and the high frequency pulse signal, where T represents a pulse period of the high frequency pulse signal.
In S1023, the second repeater converts the second low-frequency pulse signal into the second low-frequency optical signal and transmits the second low-frequency optical signal to the second device.
In this embodiment, after obtaining the second low-frequency pulse, the second repeater may convert the second low-frequency pulse signal into a second low-frequency optical signal through the electro-optical conversion circuit, and send the second low-frequency optical signal to the second device through the optical fiber.
As can be seen from the above, in the optical fiber communication method provided in the embodiment of the present application, the first repeater receives the first low-frequency optical signal sent by the first device, and converts the first low-frequency optical signal into the first high-frequency optical signal, so as to convert the first low-frequency optical signal suitable for the short distance into the first high-frequency optical signal suitable for the long distance, and send the first high-frequency optical signal to the second repeater; the second repeater converts the first high-frequency optical signal into a second low-frequency optical signal and sends the second low-frequency optical signal to the second device, so that the second device in a long distance can receive the low-frequency optical signal through the two repeaters, that is, the optical fiber communication method can perform long-distance optical fiber communication, and the application range of the optical fiber communication is expanded.
It should be understood that, the sequence numbers of the steps in the foregoing embodiments do not imply an execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.
Fig. 7 shows a block diagram of a fiber-optic communication device according to an embodiment of the present application, which corresponds to the fiber-optic communication method according to the foregoing embodiment, and only shows portions related to the embodiment of the present application for convenience of description. Referring to fig. 7, the optical fiber communication apparatus 700 includes: a first conversion unit 71 and a first transmission unit 72. Wherein:
the first conversion unit 71 is configured to receive the first low-frequency optical signal transmitted by the first device, convert the first low-frequency optical signal into a first high-frequency optical signal, and transmit the first high-frequency optical signal to the second repeater.
The first sending unit 72 is configured to convert the first high-frequency optical signal into a second low-frequency optical signal by the second repeater, and send the second low-frequency optical signal to a second device.
In an embodiment of the present application, the first conversion unit 71 specifically includes: the device comprises a first signal conversion unit, a second signal conversion unit and a second sending unit. Wherein:
the first signal conversion unit is used for converting the first low-frequency optical signal into a first low-frequency pulse signal by the first repeater.
The second signal conversion unit is used for converting the first low-frequency pulse signal into a first high-frequency pulse signal by the first repeater through a first programmable logic device.
The second transmitting unit is used for converting the first high-frequency pulse signal into the first high-frequency optical signal by the first repeater and transmitting the first high-frequency optical signal to the second repeater.
In an embodiment of the application, the second signal conversion unit is specifically configured to: converting the first low-frequency pulse signal into the first high-frequency pulse signal based on a first preset rule; the first preset rule refers to that a first preset number of pulse signals with pulse duty ratios larger than a first preset value are generated to represent each high-level signal in the first low-frequency pulse signals, and a second preset number of pulse signals with pulse duty ratios smaller than a second preset value are generated to represent each low-level signal in the first low-frequency pulse signals; the first preset value is greater than the second preset value.
In an embodiment of the present application, the first sending unit 72 specifically includes: a third signal conversion unit, a fourth signal conversion unit and a third sending unit. Wherein:
the third signal conversion unit is used for converting the first high-frequency optical signal into a second high-frequency pulse signal by the second repeater.
And the fourth signal conversion unit is used for converting the second high-frequency pulse signal into a second low-frequency pulse signal by the second repeater through a second programmable logic device.
The third sending unit is configured to convert the second low-frequency pulse signal into the second low-frequency optical signal by the second repeater, and send the second low-frequency optical signal to the second device.
In an embodiment of the present application, the fourth signal conversion unit is specifically configured to: converting the second high-frequency pulse signal into the second low-frequency pulse signal based on a second preset rule; the second preset rule means that each high level signal of the second low-frequency pulse signals is composed of a first preset number of pulse signals of which the pulse duty ratios are larger than a first preset value, and each low level signal of the second low-frequency pulse signals is composed of a second preset number of pulse signals of which the pulse duty ratios are smaller than a second preset value; the first preset value is greater than the second preset value.
In one embodiment of the present application, a frequency of the first high frequency pulse signal is greater than a first preset multiple of a frequency of the first low frequency optical signal.
As can be seen from the above, in the optical fiber communication apparatus provided in the embodiment of the present application, the first repeater receives the first low-frequency optical signal transmitted by the first device, and converts the first low-frequency optical signal into the first high-frequency optical signal, so as to convert the first low-frequency optical signal suitable for the short distance into the first high-frequency optical signal suitable for the long distance, and transmit the first high-frequency optical signal to the second repeater; the second repeater converts the first high-frequency optical signal into a second low-frequency optical signal and sends the second low-frequency optical signal to the second device, so that the second device in a long distance can receive the low-frequency optical signal through the two repeaters, that is, the optical fiber communication device can perform long-distance optical fiber communication, and the application range of the optical fiber communication is expanded.
Fig. 8 is a schematic structural diagram of a relay module according to an embodiment of the present application. As shown in fig. 8, the relay module 8 of this embodiment includes: at least one processor 80 (only one shown in fig. 8), a memory 81, and a computer program 82 stored in the memory 81 and executable on the at least one processor 80, the processor 80 implementing the steps in any of the above-described embodiments of the fiber optic communication method when executing the computer program 82.
Those skilled in the art will appreciate that fig. 8 is merely an example of the relay module 8, and does not constitute a limitation to the relay module 8, and may include more or less components than those shown, or combine some components, or different components, such as an input/output device, a network access device, and the like.
The Processor 80 may be a Central Processing Unit (CPU), and the Processor 80 may be other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory 81 may in some embodiments be an internal storage unit of the relay module 8, such as a hard disk or a memory of the relay module 8. The memory 81 may also be an external storage device of the relay module 8 in other embodiments, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), and the like, which are provided on the relay module 8. Further, the memory 81 may also include both an internal storage unit and an external storage device of the relay module 8. The memory 81 is used for storing an operating system, an application program, a BootLoader (BootLoader), data, and other programs, such as program codes of the computer program. The memory 81 may also be used to temporarily store data that has been output or is to be output.
An embodiment of the present application further provides a computer-readable storage medium, where a computer program is stored, and when the computer program is executed by a processor, the steps in any one of the above-mentioned optical fiber communication method embodiments may be implemented.
Embodiments of the present application provide a computer program product, which when running on a relay module, enables the relay module to implement the steps in any of the above-mentioned optical fiber communication method embodiments when executed.
It should be noted that, for the information interaction, execution process, and other contents between the above-mentioned devices/units, the specific functions and technical effects thereof are based on the same concept as those of the embodiment of the method of the present application, and specific reference may be made to the part of the embodiment of the method, which is not described herein again.
An embodiment of the present application further provides a computer-readable storage medium, where a computer program is stored, and when the computer program is executed by a processor, the steps in any one of the above-mentioned optical fiber communication method embodiments may be implemented.
Embodiments of the present application provide a computer program product, which when running on a relay module, enables the relay module to implement the steps in any of the above-mentioned optical fiber communication method embodiments when executed.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned function distribution may be performed by different functional units and modules according to needs, that is, the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-mentioned functions. Each functional unit and module in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one unit, and the integrated unit may be implemented in a form of hardware, or in a form of software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working processes of the units and modules in the system may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
In the embodiments provided in the present application, it should be understood that the disclosed optical fiber communication apparatus and method may be implemented in other ways. For example, the above-described device/relay module embodiments are merely illustrative, and for example, the division of the modules or units is only one logical division, and there may be other divisions when actually implemented, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.
Claims (7)
1. A method of fiber optic communication, comprising:
the method comprises the steps that a first repeater receives a first low-frequency optical signal sent by first equipment, converts the first low-frequency optical signal into a first high-frequency optical signal and sends the first high-frequency optical signal to a second repeater;
and the second repeater receives the first high-frequency optical signal, converts the first high-frequency optical signal into a second low-frequency optical signal, and sends the second low-frequency optical signal to second equipment.
2. A fiber optic telecommunications method according to claim 1, wherein the first repeater receives a first low frequency optical signal transmitted by a first device and converts the first low frequency optical signal to a first high frequency optical signal, the first high frequency optical signal being transmitted to a second repeater, comprising:
the first repeater converts the first low-frequency optical signal into a first low-frequency pulse signal;
the first repeater converts the first low-frequency pulse signal into a first high-frequency pulse signal through a first programmable logic device;
the first repeater converts the first high-frequency pulse signal into the first high-frequency optical signal and transmits the first high-frequency optical signal to the second repeater.
3. A fiber optic telecommunications method according to claim 2, wherein the first repeater converts the first low frequency pulse signal to a first high frequency pulse signal via a first programmable logic device, comprising:
converting the first low-frequency pulse signal into the first high-frequency pulse signal based on a first preset rule; the first preset rule refers to that a first preset number of pulse signals with pulse duty ratios larger than a first preset value are generated to represent each high-level signal in the first low-frequency pulse signals, and a second preset number of pulse signals with pulse duty ratios smaller than a second preset value are generated to represent each low-level signal in the first low-frequency pulse signals; the first preset value is greater than the second preset value.
4. A fiber optic telecommunications method according to claim 1, wherein the second repeater converts the first high frequency optical signal to a second low frequency optical signal and transmits the second low frequency optical signal to a second device, comprising:
the second repeater converts the first high-frequency optical signal into a second high-frequency pulse signal;
the second repeater converts the second high-frequency pulse signal into a second low-frequency pulse signal through a second programmable logic device;
and the second repeater converts the second low-frequency pulse signal into the second low-frequency optical signal and sends the second low-frequency optical signal to the second equipment.
5. A fiber optic telecommunications method according to claim 4, wherein the second repeater converts the second high frequency pulse signal to a second low frequency pulse signal via a second programmable logic device, comprising:
converting the second high-frequency pulse signal into the second low-frequency pulse signal based on a second preset rule; the second preset rule means that each high level signal of the second low-frequency pulse signals is composed of a first preset number of pulse signals of which the pulse duty ratios are larger than a first preset value, and each low level signal of the second low-frequency pulse signals is composed of a second preset number of pulse signals of which the pulse duty ratios are smaller than a second preset value; the first preset value is greater than the second preset value.
6. A fiber optic telecommunications method according to claim 2, wherein the frequency of the first high frequency pulse signal is greater than a first predetermined multiple of the frequency of the first low frequency optical signal.
7. A fiber optic communication system comprising a first device, a first repeater connected to the first device, a second repeater connected to the second device, the first repeater and the second repeater connected by an optical fiber;
the first device is used for sending a first low-frequency optical signal to the first repeater;
the first repeater is used for receiving the first low-frequency optical signal, converting the first low-frequency optical signal into a first high-frequency optical signal and sending the first high-frequency optical signal to the second repeater;
the second repeater is used for receiving the first high-frequency optical signal, converting the first high-frequency optical signal into a second low-frequency optical signal and sending the second low-frequency optical signal to the second device;
the second device is configured to receive the second low frequency optical signal.
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