CN109831254B - Optical fiber repeater system using wavelength division multiplexing technology - Google Patents
Optical fiber repeater system using wavelength division multiplexing technology Download PDFInfo
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- CN109831254B CN109831254B CN201711183980.3A CN201711183980A CN109831254B CN 109831254 B CN109831254 B CN 109831254B CN 201711183980 A CN201711183980 A CN 201711183980A CN 109831254 B CN109831254 B CN 109831254B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The utility model relates to an optical fiber repeater system utilizing wavelength division multiplexing technology, which comprises a near-end machine, a far-end machine and a single-core optical fiber, wherein the near-end machine comprises a near-end wavelength division multiplexing communication subsystem, the far-end machine comprises a far-end wavelength division multiplexing communication subsystem, and the near-end wavelength division multiplexing communication subsystem is connected with the far-end wavelength division multiplexing communication subsystem through the single-core optical fiber. Compared with the prior art, the utility model has the advantages of strong flexibility, low cost and the like.
Description
Technical Field
The utility model relates to the field of photoelectric transmission, in particular to an optical fiber repeater system utilizing a wavelength division multiplexing technology.
Background
In the existing analog optical fiber repeater system, a near-end machine is in communication connection with a far-end machine, single-mode optical fibers are mostly used, and generally, the working wavelength is 1310nm and 1550nm. The method mainly transfers and transmits radio frequency signals and monitoring information of remote machine equipment.
If the user needs to additionally transmit other data information with large capacity, the user must occupy the original working wavelength, or increase the number of optical fibers, which will affect the original system or greatly raise the cost.
Through searching, chinese patent publication No. CN201563124U discloses a radio frequency optical transmission device, comprising: the wavelength division multiplexing module receives the optical signals and performs wavelength division multiplexing; the photoelectric detector converts the optical signals after wavelength division multiplexing into electric signals; the frequency-selecting filtering module is used for frequency-selecting filtering the electric signal and transmitting the electric signal in a branching way; the transmission module outputs a main radio frequency signal obtained by frequency selection filtering; the network module is connected with the optical fiber repeater through a network and used for receiving the management of the optical fiber repeater through the network; the control module is used for controlling the modules; and receiving the FSK signal obtained by frequency-selective filtering, processing the FSK signal and outputting the FSK signal through a network module. The radio frequency optical transmission device can improve the convenience of the optical fiber repeater for managing the radio frequency optical transmission device. However, the utility model uses the wavelength division multiplexing module to convert the optical signal into the electrical signal and then perform the frequency-selecting filtering, but not to complete the transmission function of the large-capacity data information, and the requirements of the utility model cannot be met.
Disclosure of Invention
The present utility model is directed to an optical fiber repeater system using wavelength division multiplexing technology, which overcomes the drawbacks of the prior art.
The aim of the utility model can be achieved by the following technical scheme:
an optical fiber repeater system utilizing wavelength division multiplexing technology, the system comprises a near-end machine, a far-end machine and a single-core optical fiber, wherein the near-end machine comprises a near-end wavelength division multiplexing communication subsystem, the far-end machine comprises a far-end wavelength division multiplexing communication subsystem, and the near-end wavelength division multiplexing communication subsystem is connected with the far-end wavelength division multiplexing communication subsystem through the single-core optical fiber.
Preferably, the near-end wavelength division multiplexing communication subsystem comprises a near-end wavelength division multiplexing module, a near-end digital optical module, a near-end protocol converter, a near-end radio frequency optical module and a radio frequency unit, wherein one end of the near-end wavelength division multiplexing module is respectively connected with the near-end digital optical module and the near-end radio frequency optical module, and the other end of the near-end wavelength division multiplexing module is connected with the far-end wavelength division multiplexing communication subsystem through a single-core optical fiber; the near-end digital optical module is connected with the near-end protocol converter, and the near-end radio frequency optical module is connected with the radio frequency unit.
Preferably, the far-end wavelength division multiplexing communication subsystem comprises a far-end wavelength division multiplexing module, a far-end digital optical module, a far-end protocol converter, a far-end radio frequency optical module and a duplexer, wherein one end of the far-end wavelength division multiplexing module is respectively connected with the far-end digital optical module and the far-end radio frequency optical module, and the other end of the far-end wavelength division multiplexing module is connected with the near-end wavelength division multiplexing communication subsystem through a single-core optical fiber; the remote digital optical module is connected with the remote protocol converter, and the remote radio frequency optical module is connected with the duplexer.
Preferably, the near-end wavelength division multiplexing module is provided with a near-end wavelength division multiplexer, and the near-end wavelength division multiplexer is used for separating the multiplexing signal sent by the far-end wavelength division multiplexing communication subsystem into 1470nm optical signals and 1310nm optical signals, wherein the 1470nm optical signals are transmitted to the near-end digital optical module, and the 1310nm optical signals are transmitted to the near-end radio frequency optical module.
Preferably, the near-end protocol converter is provided with a near-end protocol conversion circuit, the near-end digital optical module converts the received 1470nm optical signal into an electric signal and sends the electric signal to the near-end protocol conversion circuit, and the near-end protocol conversion circuit converts the IEEE802.3Z and ITU-TG.695 protocol signals accessed to the digital optical module into standard network port signals conforming to IEEE802.3, thereby providing a transparent network interface for a user at the near-end machine and completing the transmission function of large-capacity data information.
Preferably, in the transmitting state, the near-end wavelength division multiplexer combines the 1490nm optical signal from the near-end digital optical module and the 1550nm optical signal from the optical transceiver, and then sends the signals to the far-end wavelength division multiplexing communication subsystem through a single-core optical fiber.
Preferably, the far-end wavelength division multiplexing module is provided with a far-end wavelength division multiplexer, and the far-end wavelength division multiplexer is used for separating the multiplexing signal sent by the near-end wavelength division multiplexing communication subsystem into a 1490nm optical signal and a 1550nm optical signal, wherein the 1490nm optical signal is sent to the far-end digital optical module through an internal optical fiber, and the optical signal with the 1550nm wavelength is sent to the far-end radio-frequency optical module.
Preferably, the remote protocol converter is provided with a remote protocol conversion circuit, the remote digital optical module converts the received 1490nm optical signal into an electrical signal and sends the electrical signal to the remote protocol conversion circuit, and the remote protocol conversion circuit converts IEEE802.3Z and ITU-T G.695 protocol signals of the accessed digital optical module into standard network port signals conforming to IEEE802.3, so that a transparent network interface is provided for a user at a near-end machine, and the transmission function of large-capacity data information is completed.
Preferably, in the transmitting state, the far-end multiplexer combines 1470nm optical signals from the far-end digital optical module with 1310nm optical signals from the optical transceiver and sends the signals to the near-end wavelength division multiplexing communication subsystem through a single-core optical fiber.
Preferably, the remote radio frequency optical module is connected with the duplexer through an LNA and a PA respectively.
Compared with the prior art, the utility model has the following advantages:
1. by utilizing the broadband characteristic of the optical fiber, the transmission capacity of the optical fiber is increased by the wavelength division multiplexing technology, so that the physical limit of information transmitted by one optical fiber is doubled to several times.
2. The ability to transmit 2 or several unsynchronized signals in the same fiber is beneficial to the compatibility of digital signals and analog signals, and can flexibly take out or add channels in the middle of the line regardless of data rate and modulation.
3. For the built optical fiber system, especially for the optical cable with a small core number paved in early stage, as long as the original system has a power allowance, the capacity can be further increased, and the transmission of a plurality of unidirectional signals or bidirectional signals can be realized without greatly changing the original system, so that the system has stronger flexibility.
4. The optical fiber is greatly reduced in use amount, so that the construction cost is greatly reduced, and the recovery is rapid and convenient when faults occur due to the small number of the optical fibers.
5. The sharing of active optical devices, the transfer of multiple signals or the addition of new traffic, reduces costs.
6. Active devices in the system are greatly reduced, so that the reliability of the system is improved.
Drawings
FIG. 1 is a block diagram of a system circuit of the present utility model;
fig. 2 is a schematic diagram of a wavelength division multiplexing module according to the present utility model.
Detailed Description
The following description of the technical solutions in the embodiments of the present utility model will be clear and complete, and it is obvious that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.
As shown in fig. 1, an optical fiber repeater system using wavelength division multiplexing technology, where the system includes a near-end machine, a far-end machine and a single-core optical fiber, the near-end machine includes a near-end wavelength division multiplexing communication subsystem, the far-end machine includes a far-end wavelength division multiplexing communication subsystem, and the near-end wavelength division multiplexing communication subsystem is connected with the far-end wavelength division multiplexing communication subsystem through the single-core optical fiber.
The near-end wavelength division multiplexing communication subsystem comprises a near-end wavelength division multiplexing module, a near-end digital optical module, a near-end protocol converter, a near-end radio frequency optical module and a radio frequency unit, wherein one end of the near-end wavelength division multiplexing module is respectively connected with the near-end digital optical module and the near-end radio frequency optical module, and the other end of the near-end wavelength division multiplexing module is connected with the far-end wavelength division multiplexing communication subsystem through a single-core optical fiber; the near-end digital optical module is connected with the near-end protocol converter, and the near-end radio frequency optical module is connected with the radio frequency unit.
The remote wavelength division multiplexing communication subsystem comprises a remote wavelength division multiplexing module, a remote digital optical module, a remote protocol converter, a remote radio frequency optical module and a duplexer, wherein one end of the remote wavelength division multiplexing module is respectively connected with the remote digital optical module and the remote radio frequency optical module, and the other end of the remote wavelength division multiplexing module is connected with the near wavelength division multiplexing communication subsystem through a single-core optical fiber; the remote digital optical module is connected with the remote protocol converter, and the remote radio frequency optical module is connected with the duplexer through the LNA and the PA respectively.
The near-end wavelength division multiplexing module is provided with a near-end wavelength division multiplexer which is used for separating multiplexing signals sent by the far-end wavelength division multiplexing communication subsystem into 1470nm optical signals and 1310nm optical signals, wherein the 1470nm optical signals are transmitted to the near-end digital optical module, and the 1310nm optical signals are transmitted to the near-end radio frequency optical module.
The near-end protocol converter is provided with a near-end protocol conversion circuit, the near-end digital optical module converts the received 1470nm optical signal into an electric signal and sends the electric signal to the near-end protocol conversion circuit, and the near-end protocol conversion circuit converts IEEE802.3Z and ITU-T G.695 protocol signals accessed into the digital optical module into standard network port signals conforming to IEEE802.3, so that a transparent network interface is provided for a user at the near-end machine, and the transmission function of large-capacity data information is completed.
In the transmitting state, the near-end wavelength division multiplexer combines the 1490nm optical signal from the near-end digital optical module and the 1550nm optical signal of the optical transceiver together and then sends the signals to the far-end wavelength division multiplexing communication subsystem through the single-core optical fiber.
The far-end wavelength division multiplexing module is provided with a far-end wavelength division multiplexer and is used for separating multiplexing signals sent by the near-end wavelength division multiplexing communication subsystem into 1490nm optical signals and 1550nm optical signals, wherein the 1490nm optical signals are sent to the far-end digital optical module through an internal optical fiber, and the 1550nm optical signals are sent to the far-end radio-frequency optical module.
The remote protocol converter is provided with a remote protocol conversion circuit, the remote digital optical module converts the received 1490nm optical signals into electric signals and sends the electric signals to the remote protocol conversion circuit, and the remote protocol conversion circuit converts the IEEE802.3Z and ITU-T G.695 protocol signals of the accessed digital optical module into standard network port signals conforming to IEEE802.3, so that a transparent network interface is provided for a user at a near-end machine, and the transmission function of large-capacity data information is completed.
In the transmitting state, the far-end multiplexer combines 1470nm optical signals from the far-end digital optical module with 1310nm optical signals of the optical terminal and sends the signals to the near-end wavelength division multiplexing communication subsystem through a single-core optical fiber.
As shown in fig. 2, the input and output signals of the digital optical module and the original communication signals are connected to the wavelength division multiplexing module through the internal optical fiber, and the signals are combined into one path through the wavelength division multiplexing module, and are transmitted and received through one optical fiber of the COM port.
The specific working process of the optical fiber repeater system at the near-end machine is as follows:
in a receiving state, multiplexing signals transmitted by a far-end machine through an optical fiber are separated into 1470nm optical signals and 1310nm optical signals in a wavelength division multiplexing module through a demultiplexer, the 1470nm optical signals are transmitted to a digital optical module through an internal optical fiber, the digital optical module is photoelectrically converted into electric signals, and the IEEE802.3Z and ITU-T G.695 protocol signals of the accessed digital optical module are digitally converted into standard network port signals conforming to IEEE802.3 through a protocol converter, so that a transparent transmission network interface is provided for a user at the near-end machine, and the transmission function of large-capacity data information is completed; the 1310nm wavelength optical signal is sent to the radio frequency optical module, is converted into a radio frequency signal through photoelectric conversion, and enters the rear stage to be used as a normal communication signal of the far-end and near-end machine.
In the transmitting state, the 1490nm optical signal from the digital optical module and the 1550nm optical signal from the radio frequency optical module are converged together through the multiplexer in the wavelength division multiplexing module and are coupled into the same optical fiber of the optical line, and the optical signal is transmitted to a remote place through the optical fiber;
the specific working process of the optical fiber repeater system at the remote machine is as follows:
in a receiving state, multiplexing signals transmitted by a near-end machine through an optical fiber are separated into 1490nm optical signals and 1550nm optical signals in a wavelength division multiplexing module through a demultiplexer, the 1490nm optical signals are transmitted to a digital optical module through an internal optical fiber, the digital optical module converts the optical signals into electric signals, and protocol converters convert IEEE802.3Z and ITU-T G.695 protocol signals of the accessed digital optical module into standard network port signals conforming to IEEE802.3, so that a transparent transmission network interface is provided for users at the near-end machine, and the transmission function of large-capacity data information is completed; the 1550nm wavelength optical signal is sent to the radio frequency optical module, is converted into a radio frequency signal through photoelectric conversion, and enters the rear stage to be used as a normal communication signal of the far-end and near-end machine.
In the transmitting state, 1470nm optical signals from the digital optical module and 1310nm optical signals from the radio frequency optical module are converged together through a multiplexer in the wavelength division multiplexing module and are coupled into the same optical fiber of the optical line, and the optical signals are transmitted to a remote place through the optical fiber;
therefore, the original repeater equipment is only required to be added with the corresponding wavelength division multiplexing module, and the constructed and paved single-core optical fiber is not required to be replaced and re-paved, so that the capacity of the original system is further increased, a new independent network transparent transmission channel is provided for a user, the flexibility is high, and the cost is low.
While the utility model has been described with reference to certain preferred embodiments, it will be understood by those skilled in the art that various changes and substitutions of equivalents may be made and equivalents will be apparent to those skilled in the art without departing from the scope of the utility model. Therefore, the protection scope of the utility model is subject to the protection scope of the claims.
Claims (8)
1. The optical fiber repeater system is characterized by comprising a near-end machine, a far-end machine and a single-core optical fiber, wherein the near-end machine comprises a near-end wavelength division multiplexing communication subsystem, the far-end machine comprises a far-end wavelength division multiplexing communication subsystem, and the near-end wavelength division multiplexing communication subsystem is connected with the far-end wavelength division multiplexing communication subsystem through the single-core optical fiber;
the near-end wavelength division multiplexing communication subsystem comprises a near-end wavelength division multiplexing module, a near-end digital optical module, a near-end protocol converter, a near-end radio frequency optical module and a radio frequency unit, wherein one end of the near-end wavelength division multiplexing module is respectively connected with the near-end digital optical module and the near-end radio frequency optical module, and the other end of the near-end wavelength division multiplexing module is connected with the far-end wavelength division multiplexing communication subsystem through a single-core optical fiber; the near-end digital optical module is connected with the near-end protocol converter, and the near-end radio frequency optical module is connected with the radio frequency unit;
the remote wavelength division multiplexing communication subsystem comprises a remote wavelength division multiplexing module, a remote digital optical module, a remote protocol converter, a remote radio frequency optical module and a duplexer, wherein one end of the remote wavelength division multiplexing module is respectively connected with the remote digital optical module and the remote radio frequency optical module, and the other end of the remote wavelength division multiplexing module is connected with the near wavelength division multiplexing communication subsystem through a single-core optical fiber; the remote digital optical module is connected with the remote protocol converter, and the remote radio frequency optical module is connected with the duplexer.
2. A fiber optic repeater system utilizing wavelength division multiplexing as defined in claim 1, wherein: the near-end wavelength division multiplexing module is provided with a near-end wavelength division multiplexer which is used for separating multiplexing signals sent by the far-end wavelength division multiplexing communication subsystem into 1470nm optical signals and 1310nm optical signals, wherein the 1470nm optical signals are transmitted to the near-end digital optical module, and the 1310nm optical signals are transmitted to the near-end radio frequency optical module.
3. A fiber optic repeater system utilizing wavelength division multiplexing as defined in claim 2, wherein: the near-end protocol converter is provided with a near-end protocol conversion circuit, the near-end digital optical module converts the received 1470nm optical signal into an electric signal and sends the electric signal to the near-end protocol conversion circuit, and the near-end protocol conversion circuit converts IEEE802.3Z and ITU-T G.695 protocol signals accessed into the digital optical module into standard network port signals conforming to IEEE802.3, so that a transparent network interface is provided for a user at the near-end machine, and the transmission function of large-capacity data information is completed.
4. A fiber optic repeater system utilizing wavelength division multiplexing as defined in claim 2, wherein: in the transmitting state, the near-end wavelength division multiplexer combines the 1490nm optical signal from the near-end digital optical module and the 1550nm optical signal of the optical transceiver together and then sends the signals to the far-end wavelength division multiplexing communication subsystem through the single-core optical fiber.
5. A fiber optic repeater system utilizing wavelength division multiplexing as defined in claim 1, wherein: the far-end wavelength division multiplexing module is provided with a far-end wavelength division multiplexer and is used for separating multiplexing signals sent by the near-end wavelength division multiplexing communication subsystem into 1490nm optical signals and 1550nm optical signals, wherein the 1490nm optical signals are sent to the far-end digital optical module through an internal optical fiber, and the 1550nm optical signals are sent to the far-end radio-frequency optical module.
6. The optical fiber repeater system utilizing wavelength division multiplexing as described in claim 5, wherein: the remote protocol converter is provided with a remote protocol conversion circuit, the remote digital optical module converts the received 1490nm optical signals into electric signals and sends the electric signals to the remote protocol conversion circuit, and the remote protocol conversion circuit converts the IEEE802.3Z and ITU-T G.695 protocol signals of the accessed digital optical module into standard network port signals conforming to IEEE802.3, so that a transparent network interface is provided for a user at a near-end machine, and the transmission function of large-capacity data information is completed.
7. The optical fiber repeater system utilizing wavelength division multiplexing as described in claim 5, wherein: in the transmitting state, the far-end wavelength division multiplexer combines 1470nm optical signals from the far-end digital optical module with 1310nm optical signals of the optical terminal and sends the signals to the near-end wavelength division multiplexing communication subsystem through a single-core optical fiber.
8. A fiber optic repeater system utilizing wavelength division multiplexing as defined in claim 1, wherein: the remote radio frequency optical module is connected with the duplexer through the LNA and the PA respectively.
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