CN116781166A - Optical transmitter and receiver based on wavelength division multiplexing multi-path data merging transmission - Google Patents
Optical transmitter and receiver based on wavelength division multiplexing multi-path data merging transmission Download PDFInfo
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- CN116781166A CN116781166A CN202310610200.8A CN202310610200A CN116781166A CN 116781166 A CN116781166 A CN 116781166A CN 202310610200 A CN202310610200 A CN 202310610200A CN 116781166 A CN116781166 A CN 116781166A
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- 239000013307 optical fiber Substances 0.000 claims abstract description 48
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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
- H04B10/40—Transceivers
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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
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Abstract
The application discloses an optical transceiver based on wavelength division multiplexing data merging transmission, which synthesizes optical signals of a plurality of optical fibers into one optical fiber for transmission by adopting a wavelength division multiplexing/demultiplexing technology, and can well solve the problems of multi-type and multi-channel signal transmission among rotating structures; meanwhile, the optical slip rings are connected in series in the single optical fiber link, so that the signal transmission problem between rotating structures can be effectively solved; the whole data link transmission is realized by using a hardware circuit and an optical communication component without using software for packing and unpacking, so that the problem of high time delay in the transmission link can be effectively reduced; and a Bit reporting unit is adopted to collect and report the state information of the local optical transceiver and the opposite optical transceiver, so that a user can rapidly diagnose communication faults.
Description
Technical Field
The application relates to the technical field of optical fiber signal transmission, in particular to an optical transceiver based on wavelength division multiplexing multi-path data combination transmission.
Background
Such equipment as radar revolving stage, turret, transmitting unit often install on the structure that has rotatory activity function when in actual use, and the current tradition cable transmission signal that generally adopts will use many cable transmission lines of multiple type, discovers in actual use that can't solve the signal transmission problem between the rotating structure very well. If the traditional optical transceiver scheme is adopted, the delay of a transmission link can be obviously increased by transmitting data in a data collection mode, and the instantaneity of signal and data transmission is affected.
Disclosure of Invention
The application aims to provide an optical transceiver based on wavelength division multiplexing data merging transmission, which converts Ethernet, RS422 and optical fiber video signals into serial data through hardware circuit design, converts the serial data into optical fiber transmission through an optical module, multiplexes the multiplexing optical fiber signals into one path of optical fiber signals through a wavelength division multiplexing/demultiplexing technology for transmission, and uses an optical slip ring for connection at a mechanical connection part of rotation activity to solve the signal transmission problem between rotation structures.
The application is realized by the following technical scheme:
the optical terminal based on the wavelength division multiplexing data combination transmission comprises a first optical terminal and a second optical terminal which are matched with each other, wherein a digital optical module array and a wavelength division multiplexing/demultiplexing unit are respectively arranged on the first optical terminal and the second optical terminal; the first optical transceiver and the second optical transceiver respectively comprise an Ethernet unit, an RS422 unit, a BIT reporting unit and an optical fiber video signal unit which are arranged in a pairing mode; the digital optical module array of any optical transceiver is used for respectively receiving serial data transmitted by the Ethernet unit, the RS422 unit, the BIT reporting unit and the optical fiber video signal unit, converting the serial data and transmitting the serial data to the wavelength division multiplexing/demultiplexing unit through an optical fiber; the wavelength division multiplexing/demultiplexing unit of the first optical transceiver and the wavelength division multiplexing/demultiplexing unit of the second optical transceiver are connected through a smooth ring at the mechanical connection position of the rotation activity of the wavelength division multiplexing/demultiplexing unit of the first optical transceiver, and any one of the wavelength division multiplexing/demultiplexing units receives serial data and multiplexes the serial data into one optical fiber signal for opposite-end transmission.
As an optional way, the ethernet unit is configured to process the input data of the multi-gigabit network after receiving the data, and output a path of gigabit network interface to the digital optical module array; the system comprises a network transformer, a network interface chip and a network switch;
the gigabit network signals are transmitted to the network transformer through an RJ45 network interface and then to the network interface chip, the network interface chip converts the received pairs of differential signals into digital signals and inputs the digital signals to the network switch through an SGMII interface, and the network switch is used for converting multiple gigabit network signals and one path of gigabit network signals.
As an optional way, the RS422 unit is configured to complete conversion from multiple RS422 interfaces to one serial interface, and includes an interface circuit, a serial-to-parallel interface dedicated chip, and a parallel-to-serial interface dedicated chip;
after the RS422 interface receives the signals, the input differential signals are converted into digital signals through the interface circuit, and the converted signals are input into an internal register of the chip through the pins of the parallel ports from H1 to Hn of the parallel port to serial port special chip; and then, outputting the values in the internal register through a serial port D1 pin by a shift controller to realize parallel-serial conversion.
As an alternative way, the RS422 unit is further configured to convert one serial interface to multiple RS422 interfaces, and after the serial port to parallel port dedicated chip receives the electrical signal converted by the digital optical module array through the serial port D2 pin, sequentially write the electrical signal into an internal register of the chip; and then, outputting the values in the internal registers from the Q1 to Qn parallel ports to corresponding interfaces in sequence through a shift controller to realize serial-parallel conversion.
As an optional manner, the BIT reporting unit is configured to collect and report status information of the first optical transceiver and the second optical transceiver; the state information comprises Ethernet signals and optical link states, the working states of all units in the first optical terminal machine and the second optical terminal machine are obtained through a state management unit, then the working states are written into a global state register, the value of the global state register is transmitted into the digital optical module array through a low-speed serial interface to realize photoelectric conversion reporting, and data communication with the opposite-terminal optical terminal machine is completed.
As an alternative, the optical fiber video signal unit is used for performing photoelectric signal conversion on a video optical signal.
As an alternative, the digital optical module array includes a high-speed digital optical module and a low-speed digital optical module which are arranged in a preset arrangement, and all optical signals are formatted while photoelectric conversion is performed, so as to generate optical wavelengths satisfying wavelength division multiplexing/demultiplexing.
As an alternative, the wavelength division multiplexing/demultiplexing unit includes a wavelength division multiplexer and a wavelength division demultiplexer for implementing conversion of a plurality of single wavelength optical fibers into a single multi-wavelength optical fiber.
As an alternative, the ethernet unit further comprises a switch for connecting the network interface chip with an external high-speed optical module interface.
As an alternative, the number of gigabit ethernet channels and the tera ethernet maximum rate satisfy the following relationship:
wherein m is the number of gigabit Ethernet channels,v is the tera ethernet maximum rate for a single channel maximum line rate.
Compared with the prior art, the application has the following advantages and beneficial effects:
the application synthesizes the optical signals of a plurality of optical fibers into one optical fiber for transmission by adopting the wavelength division multiplexing/demultiplexing technology, and can well solve the problems of multi-type and multi-channel signal transmission among rotating structures; meanwhile, the optical slip rings are connected in series in the single optical fiber link, so that the signal transmission problem between rotating structures can be effectively solved; the whole data link transmission is realized by using a hardware circuit and an optical communication component without using software for packing and unpacking, so that the problem of high time delay in the transmission link can be effectively reduced; and a Bit reporting unit is adopted to collect and report the state information of the local optical transceiver and the opposite optical transceiver, so that a user can rapidly diagnose communication faults.
Drawings
The accompanying drawings, which are included to provide a further understanding of embodiments of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. In the drawings:
FIG. 1 is a schematic diagram of a system structure according to an embodiment of the present application;
fig. 2 is a schematic diagram of an ethernet unit according to an embodiment of the present application;
fig. 3 is a schematic diagram of an RS422 unit structure provided in an embodiment of the present application;
FIG. 4 is a schematic diagram of a Bit reporting unit according to an embodiment of the present application;
fig. 5 is a schematic diagram of a digital optical module array structure according to an embodiment of the present application.
Detailed Description
It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
Those of ordinary skill in the art will appreciate that implementing all or part of the above facts and methods may be accomplished by a program to instruct related hardware, the program involved or the program may be stored in a computer readable storage medium, the program when executed comprising the steps of: the corresponding method steps are introduced at this time, and the storage medium may be a ROM/RAM, a magnetic disk, an optical disk, or the like.
Examples
Referring to fig. 1-5, the present embodiment provides an optical transceiver based on wavelength division multiplexing data combining and transmitting, which includes a first optical transceiver and a second optical transceiver paired with each other, and each of the first optical transceiver and the second optical transceiver is provided with a digital optical module array and a wavelength division multiplexing/demultiplexing unit; the first optical transceiver and the second optical transceiver respectively comprise an Ethernet unit, an RS422 unit, a BIT reporting unit and an optical fiber video signal unit which are arranged in a pairing mode; the digital optical module array of any optical transceiver is used for respectively receiving serial data transmitted by the Ethernet unit, the RS422 unit, the BIT reporting unit and the optical fiber video signal unit, converting the serial data and transmitting the serial data to the wavelength division multiplexing/demultiplexing unit through an optical fiber; the wavelength division multiplexing/demultiplexing unit of the first optical transceiver and the wavelength division multiplexing/demultiplexing unit of the second optical transceiver are connected through a smooth ring at the mechanical connection position of the rotation activity of the wavelength division multiplexing/demultiplexing unit of the first optical transceiver, and any one of the wavelength division multiplexing/demultiplexing units receives serial data and multiplexes the serial data into one optical fiber signal for opposite-end transmission.
Referring to fig. 1 again, any single optical transceiver is composed of an ethernet unit, an RS422 unit, a Bit report unit, and an optical fiber video signal unit. The Ethernet unit supports multi-path gigabit network input, and outputs a path of gigabit network interface to the rear-end digital optical module array after being processed by the Ethernet unit; the RS422 unit supports the input of multiple paths of RS422 interfaces, and outputs one path of serial interfaces to be connected to the digital optical module array after being processed by the RS422 unit; the Bit reporting unit is used for collecting and reporting the state information of the local optical terminal and the opposite optical terminal, and sending the state information of the local optical terminal to the opposite optical terminal, and the Bit reporting unit of the opposite optical terminal is used for carrying out the same treatment; the optical fiber video signal unit supports one path of optical fiber video signal input, selects whether single-multimode conversion is carried out according to an optical fiber transmission mode used by the optical transceiver system, and outputs one path of serial interface to be connected to the digital optical module array after the optical fiber video signal is processed and converted; the digital optical module array completes photoelectric conversion of an Ethernet unit, an RS422 unit, a Bit reporting unit, an optical fiber video signal unit and a wavelength division multiplexing/demultiplexing unit, and consists of a high-speed optical module and a low-speed optical module; the wavelength division multiplexing/demultiplexing unit consists of a wavelength division multiplexer and a wavelength division demultiplexer and realizes the conversion from a plurality of single-wavelength optical fibers to a single multi-wavelength optical fiber; the interconnection unit completes the optical link connection between the two optical terminals and realizes the transmission of the multi-wavelength optical signals.
In this embodiment, the ethernet unit is mainly composed of a network transformer, a network interface chip, and a network switch. The gigabit Ethernet signals are transmitted to a network transformer through an RJ45 network interface, and the network transformer plays roles of electrical isolation, impedance matching, signal coupling and the like; the signal is input into the network interface chip after passing through the network transformer; further, the network chip converts the received 4 pairs of differential signals into digital signals and inputs the digital signals into the network switch through the SGMII interface; and the network switch outputs the obtained multi-channel gigabit network data to the digital optical module array at the rear end through one channel of gigabit network interface. The system also comprises a switch which is used for connecting the network interface chip with an external high-speed optical module interface.
Similarly, the Ethernet unit also completes the input of one path of tera-network interface and the input of multiple paths of gigabit-network output interfaces. The tera Ethernet interface transmits the received electric signals converted by the digital optical module array to the network switch, and the network switch distributes the tera-network data to the corresponding gigabit network link. Each gigabit network link is processed by a network chip and a network transformer, converts digital signals into 4 pairs of differential signals through an SGMII interface, and outputs the signals through an RJ45 network interface.
And, in designing the ethernet unit, assume that the gigabit ethernet channel number is: m, the maximum linear rate of a single channel is:the maximum rate of the tera ethernet is: v, the maximum channel number and channel rate of the gigabit Ethernet should meet the following formulas, otherwise the situation that the speed limit occurs in the gigabit Ethernet part channel occurs.
Referring to fig. 3 again, the RS422 unit completes conversion from multiple RS422 interfaces to one serial interface, and the RS422 unit mainly comprises an interface circuit, a serial-to-parallel interface special chip, and a parallel-to-serial interface special chip. When each path of RS422 interface receives signals, the input differential signals are converted into digital signals through an interface circuit; further, the signals after conversion of each path are input into an internal register of the chip from an H1 to Hn parallel port pin of the parallel port to serial port special chip; further, the values in the register are sequentially output through a serial port D1 pin by a shift controller, so that parallel-serial conversion is realized; and finally, inputting the data obtained by the serial interface into a digital optical module array to realize electro-optical conversion.
Similarly, the RS422 unit may also perform conversion from one serial interface to multiple RS422 interfaces. After receiving the electric signals converted by the digital optical module array through the serial port D2 pin, the serial port-to-parallel port special chip sequentially writes the electric signals into an internal register of the chip; further, the values in the register are sequentially output from the Q1 to Qn parallel ports to the corresponding interface circuits through the shift controller in the chip to realize serial-parallel conversion; each interface circuit converts the obtained digital signal into a differential signal and outputs the differential signal.
The Bit reporting unit is responsible for collecting and reporting state information of the system, wherein the state information comprises Ethernet and optical link states (laser transmitter states and optical los signals of an optical fiber receiving channel). The working states of the Ethernet units, the digital optical module array units, the video optical module units and the optical links of the local optical terminal and the opposite optical terminal are obtained through the state management unit, then the states are written into the corresponding global state registers, and the values of the global state registers are transmitted into the digital optical module array through the low-speed serial interface to realize electric-optical conversion and report to the opposite optical terminal.
The optical fiber video signal unit is used for completing the conversion from a video optical signal to an electric signal and completing the wavelength conversion of the video optical signal in cooperation with the optical module array. The optical fiber video signal unit is internally realized by a video optical module, and the optical wavelength of the optical fiber video signal is assumed to be Lx, and at the moment, the optical fiber video signal unit and the digital optical module array cooperate to complete the wavelength conversion of the optical fiber video signal, so that the optical signal with the wavelength Lx is converted into the optical signal with the wavelength L2. If Lx is equal to L2, the optical fiber video signal unit can be cut off, and the optical fiber video signal is directly connected to the wavelength division multiplexing/demultiplexing unit.
The digital optical module array is composed of high-speed and low-speed digital optical modules, completes the optical-electrical and electrical-optical conversion of the system, and formats all optical signals in the system to generate optical wavelengths meeting wavelength division multiplexing/demultiplexing.
The wavelength division multiplexing/demultiplexing unit selects a wavelength division multiplexing/demultiplexing device, the optical interfaces of different wavelengths of the digital optical module array are respectively connected to a single-wavelength optical fiber end of the wavelength division multiplexing/demultiplexing device, and the optical fibers of the multiplexing end are connected with the optical fibers of the interconnection unit. The smooth ring in the interconnection unit is also in mature design, and is realized by selecting a finished product smooth ring assembly.
The foregoing description of the embodiments has been provided for the purpose of illustrating the general principles of the application, and is not meant to limit the scope of the application, but to limit the application to the particular embodiments, and any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the application are intended to be included within the scope of the application.
Claims (10)
1. An optical transceiver based on wavelength division multiplexing data combination transmission, comprising:
the first optical transceiver and the second optical transceiver are matched with each other and are respectively provided with a digital optical module array and a wavelength division multiplexing/demultiplexing unit;
the first optical transceiver and the second optical transceiver respectively comprise an Ethernet unit, an RS422 unit, a BIT reporting unit and an optical fiber video signal unit which are arranged in a pairing mode; the digital optical module array of any optical transceiver is used for respectively receiving serial data transmitted by the Ethernet unit, the RS422 unit, the BIT reporting unit and the optical fiber video signal unit, converting the serial data and transmitting the serial data to the wavelength division multiplexing/demultiplexing unit through an optical fiber;
the wavelength division multiplexing/demultiplexing unit of the first optical transceiver and the wavelength division multiplexing/demultiplexing unit of the second optical transceiver are connected through a smooth ring at the mechanical connection position of the rotation activity of the wavelength division multiplexing/demultiplexing unit of the first optical transceiver, and any one of the wavelength division multiplexing/demultiplexing units receives serial data and multiplexes the serial data into one optical fiber signal for opposite-end transmission.
2. The optical transceiver based on wavelength division multiplexing data combining transmission according to claim 1, wherein the ethernet unit is configured to process the input data of the multiple gigabit network after receiving the data, and output a gigabit network interface to the digital optical module array; the system comprises a network transformer, a network interface chip and a network switch;
the gigabit network signals are transmitted to the network transformer through an RJ45 network interface and then to the network interface chip, the network interface chip converts the received pairs of differential signals into digital signals and inputs the digital signals to the network switch through an SGMII interface, and the network switch is used for converting multiple gigabit network signals and one path of gigabit network signals.
3. The optical transceiver based on wavelength division multiplexing data merging transmission according to claim 1, wherein the RS422 unit is configured to complete conversion from multiple RS422 interfaces to one serial interface, and includes an interface circuit, a serial-to-parallel interface dedicated chip, and a parallel-to-serial interface dedicated chip;
after the RS422 interface receives the signals, the input differential signals are converted into digital signals through the interface circuit, and the converted signals are input into an internal register of the chip through the pins of the parallel ports from H1 to Hn of the parallel port to serial port special chip; and then, outputting the values in the internal register through a serial port D1 pin by a shift controller to realize parallel-serial conversion.
4. The optical transceiver based on wavelength division multiplexing data merging transmission according to claim 3, wherein the RS422 unit is further configured to convert one serial interface into multiple RS422 interfaces, and the serial port-to-parallel port dedicated chip sequentially writes the electrical signals converted by the digital optical module array into an internal register of the chip after receiving the electrical signals through a serial port D2 pin; and then, outputting the values in the internal registers from the Q1 to Qn parallel ports to corresponding interfaces in sequence through a shift controller to realize serial-parallel conversion.
5. The optical transceiver based on wavelength division multiplexing data combining and transmitting as claimed in claim 1, wherein the BIT reporting unit is configured to collect and report status information of the first optical transceiver and the second optical transceiver; the state information comprises Ethernet signals and optical link states, the working states of all units in the first optical terminal machine and the second optical terminal machine are obtained through a state management unit, then the working states are written into a global state register, the value of the global state register is transmitted into the digital optical module array through a low-speed serial interface to realize photoelectric conversion reporting, and data communication with the opposite-terminal optical terminal machine is completed.
6. The optical transceiver based on wavelength division multiplexing data combining transmission according to claim 1, wherein the optical fiber video signal unit is configured to perform optical-to-electrical signal conversion on a video optical signal.
7. The optical transceiver based on wavelength division multiplexing data combining and transmitting as claimed in claim 1, wherein the digital optical module array comprises high-speed digital optical modules and low-speed digital optical modules which are arranged and distributed in a preset manner, and all optical signals are formatted while photoelectric conversion is performed, so that optical wavelengths satisfying wavelength division multiplexing/demultiplexing are generated.
8. The optical transceiver of claim 1, wherein the wavelength division multiplexing/demultiplexing unit includes a wavelength division multiplexer and a wavelength division demultiplexer for converting a plurality of single wavelength optical fibers into a single multi-wavelength optical fiber.
9. The optical transceiver of claim 2, wherein the ethernet unit further comprises a switch for connecting the network interface chip to an external high-speed optical module interface.
10. The optical transceiver based on wavelength division multiplexing data combining transmission according to claim 2, wherein the number of gigabit ethernet channels and the maximum rate of the teraethernet satisfy the following relationship:
wherein m is the number of gigabit Ethernet channels, v n V is the tera ethernet maximum rate for a single channel maximum line rate.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310610200.8A CN116781166A (en) | 2023-05-26 | 2023-05-26 | Optical transmitter and receiver based on wavelength division multiplexing multi-path data merging transmission |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310610200.8A CN116781166A (en) | 2023-05-26 | 2023-05-26 | Optical transmitter and receiver based on wavelength division multiplexing multi-path data merging transmission |
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